feat(前端界面): 优化单页适高滚动条

README.md

@@ -88,7 +88,7 @@ func main() {
 	}
 	valid := true
 	for _, report := range reports {
-		if report.Valid {
+		if report.IntegrityValid() {
 			log.Printf("签名%s验证通过", report.ID)
 			continue
 		}

assets/webui/ofdgo.css

@@ -401,6 +401,10 @@ body[data-hide-meta] .meta-panel {
 	background-size: 24px 24px;
 }
 
+.viewer-panel.single-page-fits-height {
+	overflow-y: hidden;
+}
+
 .empty-state {
 	position: absolute;
 	inset: 0;

assets/webui/ofdgo.js

@@ -1003,7 +1003,7 @@ async function exportPDF() {
 			return;
 		}
 		setProgress("正在保存文档 PDF", 86);
-		const bytes = base64ToBytes(result.base64);
+		const bytes = result.bytes;
 		downloadBytes(bytes, "application/pdf", pdfFileName());
 		setStatus(`文档 PDF 已导出 ${formatBytes(result.size || bytes.length)}`);
 	} catch (err) {
@@ -1047,7 +1047,7 @@ async function exportCurrentPage() {
 			return;
 		}
 		setProgress(`正在保存 ${result.label || label}`, 86);
-		const bytes = base64ToBytes(result.base64);
+		const bytes = result.bytes;
 		downloadBytes(bytes, result.mime || info?.mime || "application/octet-stream", pageFileName(result.extension || info?.extension || format));
 		setStatus(`${result.label || label} 已导出 ${formatBytes(result.size || bytes.length, result.label || label)}`);
 	} catch (err) {
@@ -1364,6 +1364,10 @@ function pageShellAtPoint(x, y) {
 
 function setCurrentPage(index) {
 	state.pageIndex = index;
+	if (state.fitMode === "width") {
+		state.scale = fitWidthScale(currentPageInfo());
+		el.zoomLabel.textContent = `${Math.round(state.scale * 100)}%`;
+	}
 	updatePageListCurrent();
 	updateControls();
 	if (state.doc) {
@@ -1408,13 +1412,14 @@ function layoutPages() {
 function layoutPageShell(shell, page) {
 	const width = Math.max(1, page.width * MM_TO_PX);
 	const height = Math.max(1, page.height * MM_TO_PX);
-	shell.style.width = `${width * state.scale}px`;
+	const scale = state.fitMode === "width" ? state.scale * currentPageInfo().width / page.width : state.scale;
-	shell.style.height = `${height * state.scale}px`;
+	shell.style.width = `${width * scale}px`;
+	shell.style.height = `${height * scale}px`;
 	const surface = shell.querySelector(".page-surface");
 	if (surface) {
 		surface.style.width = `${width}px`;
 		surface.style.height = `${height}px`;
-		surface.style.transform = `scale(${state.scale})`;
+		surface.style.transform = `scale(${scale})`;
 	}
 }
 
@@ -1668,7 +1673,7 @@ function renderSignatures() {
 	const fragment = document.createDocumentFragment();
 	for (const signature of signatures) {
 		const row = document.createElement("div");
-		row.className = `signature-row ${signature.integrityValid ? "valid" : "invalid"}`;
+		row.className = `signature-row ${signature.valid ? "valid" : "invalid"}`;
 
 		const head = document.createElement("div");
 		head.className = "signature-head";
@@ -1677,13 +1682,16 @@ function renderSignatures() {
 
 		const badges = document.createElement("div");
 		badges.className = "signature-badges";
-		badges.append(fontBadge(signature.integrityValid ? "完整" : "异常", signature.integrityValid ? "valid" : "invalid"));
+		badges.append(fontBadge(signature.valid ? "通过" : "异常", signature.valid ? "valid" : "invalid"));
 
 		head.append(name, badges);
 		row.append(head);
 		appendSignatureLine(row, "编号", signature.id);
 		appendSignatureLine(row, "版本", signature.version);
 		appendSignatureLine(row, "章图", signature.sealType);
+		appendSignatureLine(row, "章号", signature.sealId);
+		appendSignatureLine(row, "章名", signature.sealName);
+		appendSignatureLine(row, "厂商", signature.sealVendor);
 		appendSignatureLine(row, "签者", signature.signer);
 		appendSignatureLine(row, "时间", formatSignatureTime(signature.signatureDateTime));
 		appendSignatureLine(row, "机构", signatureAgency(signature));
@@ -1694,12 +1702,17 @@ function renderSignatures() {
 			appendSignatureCheck(row, "一致", signature.sealMatchOK);
 		}
 		appendSignatureCheck(row, "证书", signature.certOK);
+		appendSignaturePolicy(row, "签期", signature.signatureTimeChecked, signature.signatureTimeOK);
+		appendSignaturePolicy(row, "章期", signature.sealTimeChecked, signature.sealTimeOK);
+		if (signature.sealCertTimeChecked) {
+			appendSignatureLine(row, "制期", signature.sealCertTimeOK ? "有效" : "失效", signature.sealCertTimeOK ? "ok" : "");
+		}
 		appendSignaturePolicy(row, "时效", signature.certTimeChecked, signature.certTimeOK);
 		appendSignaturePolicy(row, "信任", signature.certTrustChecked, signature.certTrustOK);
 		appendSignatureLine(row, "保护", signatureReferenceText(signature), signatureReferenceStatus(signature));
-		appendSignatureLine(row, "序号", signature.signSerial);
 		appendSignatureLine(row, "算法", signature.signatureMethod);
 		appendSignatureLine(row, "散列", signature.digestMethod);
+		appendSignatureLine(row, "序号", signature.signSerial);
 		appendSignatureLine(row, "主体", signature.signSubject && signature.signSubject !== signature.signer ? signature.signSubject : "");
 		appendSignatureLine(row, "颁发", signature.signIssuer);
 		appendSignatureLine(row, "章证", signature.sealSubject);
@@ -1713,7 +1726,7 @@ function signatureSummary(signatures) {
 	if (!signatures.length) {
 		return "0";
 	}
-	const invalid = signatures.filter((signature) => !signature.integrityValid).length;
+	const invalid = signatures.filter((signature) => !signature.valid).length;
 	if (invalid) {
 		return `${signatures.length} · 异常 ${invalid}`;
 	}
@@ -1972,6 +1985,13 @@ function fitWidth(updateStatus = true) {
 	if (!page) {
 		return;
 	}
+	setScale(fitWidthScale(page), updateStatus, "width");
+	if (updateStatus) {
+		scrollToPage(state.pageIndex);
+	}
+}
+
+function fitWidthScale(page) {
 	const space = pageSpace();
 	const width = Math.max(1, page.width * MM_TO_PX);
 	const height = Math.max(1, page.height * MM_TO_PX);
@@ -1979,10 +1999,7 @@ function fitWidth(updateStatus = true) {
 	if (!viewerHasVerticalScrollbar() && height * (available / width) > Math.max(1, el.viewerPanel.clientHeight - space * 2)) {
 		available = Math.max(1, available - scrollbarWidth());
 	}
-	setScale(available / width, updateStatus, "width");
+	return Math.min(4, Math.max(0.2, available / width));
-	if (updateStatus) {
-		scrollToPage(state.pageIndex);
-	}
 }
 
 function fitHeight(updateStatus = true) {
@@ -2015,14 +2032,15 @@ function setScale(nextScale, updateStatus = true, fitMode = "free") {
 	const anchor = updateStatus && fitMode === "free" ? scaleAnchor() : null;
 	const scale = Math.min(4, Math.max(0.2, nextScale));
 	const scaleChanged = Math.abs(scale - state.scale) > 0.001;
+	const layoutChanged = scaleChanged || fitMode !== state.fitMode;
 	state.fitMode = fitMode;
 	state.scale = scale;
-	if (scaleChanged) {
+	if (layoutChanged) {
 		clearStampHighlights();
 		layoutPages();
 	}
 	updateFitSpace();
-	if (scaleChanged) {
+	if (layoutChanged) {
 		restoreScaleAnchor(anchor);
 	}
 	el.zoomLabel.textContent = `${Math.round(state.scale * 100)}%`;
@@ -2092,6 +2110,7 @@ function scrollbarWidth() {
 function updateFitSpace() {
 	const page = currentPageInfo();
 	if (!page || state.fitMode === "free") {
+		el.viewerPanel.classList.remove("single-page-fits-height");
 		el.pageFrame.style.removeProperty("--fit-space");
 		el.pageFrame.style.removeProperty("--fit-gap");
 		return;
@@ -2099,6 +2118,7 @@ function updateFitSpace() {
 	const shell = pageShell(state.pageIndex);
 	const height = shell ? shell.getBoundingClientRect().height : Math.max(1, page.height * MM_TO_PX * state.scale);
 	const base = pageSpace();
+	el.viewerPanel.classList.toggle("single-page-fits-height", state.doc.pageCount === 1 && height <= el.viewerPanel.clientHeight - base * 2);
 	const space = Math.max(base, (el.viewerPanel.clientHeight - height) / 2);
 	const gap = space > base ? space + 1 : space;
 	el.pageFrame.style.setProperty("--fit-space", `${space}px`);
@@ -2159,7 +2179,7 @@ function callWASM(name, ...args) {
 		}
 		throw err;
 	}
-	const result = JSON.parse(payload);
+	const result = typeof payload === "string" ? JSON.parse(payload) : payload;
 	if (!result.ok) {
 		throw new Error(result.error || "WASM 调用失败");
 	}
@@ -2215,15 +2235,6 @@ function formatSize(value) {
 	return value.toFixed(1);
 }
 
-function base64ToBytes(base64) {
-	const binary = atob(base64 || "");
-	const bytes = new Uint8Array(binary.length);
-	for (let i = 0; i < binary.length; i += 1) {
-		bytes[i] = binary.charCodeAt(i);
-	}
-	return bytes;
-}
-
 function downloadBytes(bytes, mime, name) {
 	const blob = new Blob([bytes], { type: mime });
 	const link = document.createElement("a");

go.mod

@@ -1,13 +1,13 @@
 module github.com/xiaoqidun/ofdgo
 
-go 1.25.0
+go 1.26.0
 
 require (
-	github.com/tdewolff/canvas v0.0.0-20260708151538-b3beae08c578
+	github.com/tdewolff/canvas v0.0.0-20260822211237-56e622de465a
-	github.com/tdewolff/font v0.0.0-20260527091451-1663e68cb8a4
+	github.com/tdewolff/font v0.0.0-20260822205238-d0d2f004b117
-	github.com/xiaoqidun/jbig2 v0.0.0-20260710074125-96fddd152f49
+	github.com/xiaoqidun/jbig2 v0.0.0-20260823111534-2e67bcec7059
-	golang.org/x/image v0.44.0
+	golang.org/x/image v0.45.0
-	golang.org/x/text v0.40.0
+	golang.org/x/text v0.41.0
 )
 
 require (
@@ -19,7 +19,7 @@ require (
 	github.com/BurntSushi/xgbutil v0.0.0-20190907113008-ad855c713046 // indirect
 	github.com/ByteArena/poly2tri-go v0.0.0-20170716161910-d102ad91854f // indirect
 	github.com/Kagami/go-avif v0.1.0 // indirect
-	github.com/andybalholm/brotli v1.2.1 // indirect
+	github.com/andybalholm/brotli v1.2.2 // indirect
 	github.com/benoitkugler/textlayout v0.3.2 // indirect
 	github.com/benoitkugler/textprocessing v0.0.6 // indirect
 	github.com/go-fonts/latin-modern v0.3.3 // indirect
@@ -28,13 +28,14 @@ require (
 	github.com/kolesa-team/go-webp v1.0.5 // indirect
 	github.com/srwiley/rasterx v0.0.0-20220730225603-2ab79fcdd4ef // indirect
 	github.com/srwiley/scanx v0.0.0-20190309010443-e94503791388 // indirect
-	github.com/tdewolff/minify/v2 v2.24.13 // indirect
+	github.com/tdewolff/minify/v2 v2.24.17 // indirect
-	github.com/tdewolff/parse/v2 v2.8.13 // indirect
+	github.com/tdewolff/parse/v2 v2.8.16 // indirect
 	github.com/wcharczuk/go-chart/v2 v2.1.2 // indirect
-	github.com/yuin/goldmark v1.8.2 // indirect
+	github.com/yuin/goldmark v1.8.5 // indirect
-	golang.org/x/net v0.55.0 // indirect
+	golang.org/x/net v0.58.0 // indirect
+	golang.org/x/sys v0.47.0 // indirect
 	gonum.org/v1/plot v0.17.0 // indirect
-	modernc.org/knuth v0.5.5 // indirect
+	modernc.org/knuth v0.6.0 // indirect
 	modernc.org/token v1.1.0 // indirect
 	star-tex.org/x/tex v0.7.1 // indirect
 )

go.sum

@@ -1,15 +1,15 @@
 codeberg.org/go-fonts/dejavu v0.4.0 h1:2yn58Vkh4CFK3ipacWUAIE3XVBGNa0y1bc95Bmfx91I=
 codeberg.org/go-fonts/dejavu v0.4.0/go.mod h1:abni088lmhQJvso2Lsb7azCKzwkfcnttl6tL1UTWKzg=
-codeberg.org/go-fonts/liberation v0.5.0 h1:SsKoMO1v1OZmzkG2DY+7ZkCL9U+rrWI09niOLfQ5Bo0=
+codeberg.org/go-fonts/liberation v0.6.0 h1:15Gh6SdwYve22CWCm9jYpVpRuaTh726av2TgHTHvAtQ=
-codeberg.org/go-fonts/liberation v0.5.0/go.mod h1:zS/2e1354/mJ4pGzIIaEtm/59VFCFnYC7YV6YdGl5GU=
+codeberg.org/go-fonts/liberation v0.6.0/go.mod h1:J15VAa+lyxdcI/Je7lDDDl6QOhLk9feNBnnwXqEHXOk=
 codeberg.org/go-latex/latex v0.3.0 h1:LKTaDHFbEC2PH1sh0sYv6PZ1pzs/g2aoeV1HItWj/bg=
 codeberg.org/go-latex/latex v0.3.0/go.mod h1:8ETijTpK2bFtwRAXLXe1RZJrYxnc5pibibZfQBj+Lk4=
 codeberg.org/go-pdf/fpdf v0.12.0 h1:g8E/1VqGqB2lZUUaqQrrTnA0IEJLPTTX1DZ0qS/ZmhU=
 codeberg.org/go-pdf/fpdf v0.12.0/go.mod h1:WJNJ2bvCj81rZBdhOf7lKOGoSl+OKMXcIcXqDcP8r5Y=
 git.sr.ht/~sbinet/cmpimg v0.1.0 h1:E0zPRk2muWuCqSKSVZIWsgtU9pjsw3eKHi8VmQeScxo=
 git.sr.ht/~sbinet/cmpimg v0.1.0/go.mod h1:FU12psLbF4TfNXkKH2ZZQ29crIqoiqTZmeQ7dkp/pxE=
-git.sr.ht/~sbinet/gg v0.7.0 h1:YmNf7YKd7diDMTPm86hZa1EM3pbkOyD/zzjl0LZUdNM=
+git.sr.ht/~sbinet/gg v0.8.0 h1:PjQ4AgUWRz7Dy6PVBKMLLg96eRCos1U+H6F3FJuKWHo=
-git.sr.ht/~sbinet/gg v0.7.0/go.mod h1:VYeli15tpMM4EvqlivlVbbyvWZlOU+EZn4XZmfBGUdM=
+git.sr.ht/~sbinet/gg v0.8.0/go.mod h1:XhlGCvSXts+BaZ1XMZLxLSFUDvwsJ/2El5F6XzPep6o=
 github.com/BurntSushi/freetype-go v0.0.0-20160129220410-b763ddbfe298 h1:1qlsVAQJXZHsaM8b6OLVo6muQUQd4CwkH/D3fnnbHXA=
 github.com/BurntSushi/freetype-go v0.0.0-20160129220410-b763ddbfe298/go.mod h1:D+QujdIlUNfa0igpNMk6UIvlb6C252URs4yupRUV4lQ=
 github.com/BurntSushi/graphics-go v0.0.0-20160129215708-b43f31a4a966 h1:lTG4HQym5oPKjL7nGs+csTgiDna685ZXjxijkne828g=
@@ -24,8 +24,8 @@ github.com/Kagami/go-avif v0.1.0 h1:8GHAGLxCdFfhpd4Zg8j1EqO7rtcQNenxIDerC/uu68w=
 github.com/Kagami/go-avif v0.1.0/go.mod h1:OPmPqzNdQq3+sXm0HqaUJQ9W/4k+Elbc3RSfJUemDKA=
 github.com/ajstarks/svgo v0.0.0-20211024235047-1546f124cd8b h1:slYM766cy2nI3BwyRiyQj/Ud48djTMtMebDqepE95rw=
 github.com/ajstarks/svgo v0.0.0-20211024235047-1546f124cd8b/go.mod h1:1KcenG0jGWcpt8ov532z81sp/kMMUG485J2InIOyADM=
-github.com/andybalholm/brotli v1.2.1 h1:R+f5xP285VArJDRgowrfb9DqL18yVK0gKAW/F+eTWro=
+github.com/andybalholm/brotli v1.2.2 h1:HzTuoo2ErYQqf5qvcJInB8uvqSVxRttzkFexPWtnceM=
-github.com/andybalholm/brotli v1.2.1/go.mod h1:rzTDkvFWvIrjDXZHkuS16NPggd91W3kUSvPlQ1pLaKY=
+github.com/andybalholm/brotli v1.2.2/go.mod h1:rzTDkvFWvIrjDXZHkuS16NPggd91W3kUSvPlQ1pLaKY=
 github.com/benoitkugler/pstokenizer v1.0.0/go.mod h1:l1G2Voirz0q/jj0TQfabNxVsa8HZXh/VMxFSRALWTiE=
 github.com/benoitkugler/textlayout v0.3.2 h1:Y/LTkwpQ9G0Fia9yhPmZA9IR5AnE8Cq30j3C+Gx5/IE=
 github.com/benoitkugler/textlayout v0.3.2/go.mod h1:o+1hFV+JSHBC9qNLIuwVoLedERU7sBPgEFcuSgfvi/w=
@@ -33,8 +33,6 @@ github.com/benoitkugler/textlayout-testdata v0.1.1/go.mod h1:i/qZl09BbUOtd7Bu/W1
 github.com/benoitkugler/textprocessing v0.0.6 h1:obkMyj62GEPg3xUVYqROlCN22z1OleuZm6ULqX9Om1g=
 github.com/benoitkugler/textprocessing v0.0.6/go.mod h1:Io0gN08/PXEzrSOWFa88xHx2Xv3VjvLMY7H76YoI23A=
 github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
-github.com/davecgh/go-spew v1.1.2-0.20180830191138-d8f796af33cc h1:U9qPSI2PIWSS1VwoXQT9A3Wy9MM3WgvqSxFWenqJduM=
-github.com/davecgh/go-spew v1.1.2-0.20180830191138-d8f796af33cc/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/go-fonts/latin-modern v0.3.3 h1:g2xNgI8yzdNzIVm+qvbMryB6yGPe0pSMss8QT3QwlJ0=
 github.com/go-fonts/latin-modern v0.3.3/go.mod h1:tHaiWDGze4EPB0Go4cLT5M3QzRY3peya09Z/8KSCrpY=
 github.com/go-text/typesetting v0.3.4 h1:YYurUOtEb9kGSOz4uE3k4OpBGsp1dDL8+fjCeaFamAU=
@@ -59,27 +57,29 @@ github.com/srwiley/scanx v0.0.0-20190309010443-e94503791388 h1:ZdkidVdpLW13BQ9a+
 github.com/srwiley/scanx v0.0.0-20190309010443-e94503791388/go.mod h1:C/WY5lmWfMtPFYYBTd3Lzdn4FTLr+RxlIeiBNye+/os=
 github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
 github.com/stretchr/testify v1.7.0/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
-github.com/stretchr/testify v1.11.1 h1:7s2iGBzp5EwR7/aIZr8ao5+dra3wiQyKjjFuvgVKu7U=
+github.com/stretchr/testify v1.12.1 h1:EuwCh5fleGS7H32xRwO3wRGT7DxrDhLAT6FF8MpWDWE=
-github.com/stretchr/testify v1.11.1/go.mod h1:wZwfW3scLgRK+23gO65QZefKpKQRnfz6sD981Nm4B6U=
+github.com/stretchr/testify v1.12.1/go.mod h1:MDEgiDPPsNp5cuIrHPPCyornHKgEVbtFUmoNlxoYthg=
-github.com/tdewolff/canvas v0.0.0-20260708151538-b3beae08c578 h1:OKVthD6KmBTDWsxnPkmDLW35yp+lvoqWsMeteXOZW+4=
+github.com/tdewolff/canvas v0.0.0-20260822211237-56e622de465a h1:riaFBiYaIv1gM31xdcU0Yo7bdp3WebF4dggO/JK0g/8=
-github.com/tdewolff/canvas v0.0.0-20260708151538-b3beae08c578/go.mod h1:Lz12ClttuKvo2jb1UxBfJJWmKV0LmEc8IRo/30R7z+k=
+github.com/tdewolff/canvas v0.0.0-20260822211237-56e622de465a/go.mod h1:K9Ux3cwFtyAFRITZ46g7v+ORXgI3ENtQa5rL9yjNz5Y=
-github.com/tdewolff/font v0.0.0-20260527091451-1663e68cb8a4 h1:QmSG/RtOlLPJDLJ24XHSDEu4iSgcG+s9sdRg7wTdfpk=
+github.com/tdewolff/font v0.0.0-20260822205238-d0d2f004b117 h1:5vSJjsbV9AH0U+Ex0uej8ROrpOBlOVBrw0mGlVef7oo=
-github.com/tdewolff/font v0.0.0-20260527091451-1663e68cb8a4/go.mod h1:tQzLTuJVLs4Pp6Vxdn3PJ7sAe4gIuph3SBm/BmdlmR0=
+github.com/tdewolff/font v0.0.0-20260822205238-d0d2f004b117/go.mod h1:ipESUihcEdgRBhIwTRHmBTOMamccMQrp4iCxfa1aFws=
-github.com/tdewolff/minify/v2 v2.24.13 h1:xrcF7gKDnUszseEY9WX9mUlZII2v2Go/QAcAwRASw58=
+github.com/tdewolff/minify/v2 v2.24.17 h1:6AbitfVyq0M7aW6i+XL7+49DeTQZwloOMs9O574arBg=
-github.com/tdewolff/minify/v2 v2.24.13/go.mod h1:emvwoYeIl8bfAKqRU5ww95LX9Gpggpqv/naal9a8Yq0=
+github.com/tdewolff/minify/v2 v2.24.17/go.mod h1:kVqn9vxXUKtlHexSNrWbYePqioOT5mc4ou/KVSMpfCM=
-github.com/tdewolff/parse/v2 v2.8.13 h1:si/8rLw5BZZTWCCiMm9A3f6x+RmqYfrkEeXCgpX5ick=
+github.com/tdewolff/parse/v2 v2.8.16 h1:bLk5svUOQRkW/Y2SJ+DeENSIkZBcTIkq+Atyv5D8feI=
-github.com/tdewolff/parse/v2 v2.8.13/go.mod h1:XdsoSFThlVIRIajAuqz1evNY7bagZS8LBOPA3aVopwQ=
+github.com/tdewolff/parse/v2 v2.8.16/go.mod h1:XdsoSFThlVIRIajAuqz1evNY7bagZS8LBOPA3aVopwQ=
 github.com/tdewolff/test v1.0.12 h1:7F21DqIajswxuche0geHdrUZRCWE4oko4b7bcmkkrxk=
 github.com/tdewolff/test v1.0.12/go.mod h1:XPuWBzvdUzhCuxWO1ojpXsyzsA5bFoS3tO/Q3kFuTG8=
 github.com/wcharczuk/go-chart/v2 v2.1.2 h1:Y17/oYNuXwZg6TFag06qe8sBajwwsuvPiJJXcUcLL6E=
 github.com/wcharczuk/go-chart/v2 v2.1.2/go.mod h1:Zi4hbaqlWpYajnXB2K22IUYVXRXaLfSGNNR7P4ukyyQ=
-github.com/xiaoqidun/jbig2 v0.0.0-20260710074125-96fddd152f49 h1:h/1lOG9/75eK4atpQFcm9oGXmxekMVfsPJowtYLXu5w=
+github.com/xiaoqidun/jbig2 v0.0.0-20260823111534-2e67bcec7059 h1:/JXxWbNTePSVfshS7BVRm75Kh1/5rixvLpgTRw7MMv8=
-github.com/xiaoqidun/jbig2 v0.0.0-20260710074125-96fddd152f49/go.mod h1:4ieZvd1EYR3zUzaAT4H8vLDb6XO+yjnxuh33So/5iC4=
+github.com/xiaoqidun/jbig2 v0.0.0-20260823111534-2e67bcec7059/go.mod h1:mdoUQnVPIA4yS0/+ZrtxJNiDdbphI0RMu+DPfxXfVhE=
 github.com/xyproto/randomstring v1.0.5 h1:YtlWPoRdgMu3NZtP45drfy1GKoojuR7hmRcnhZqKjWU=
 github.com/xyproto/randomstring v1.0.5/go.mod h1:rgmS5DeNXLivK7YprL0pY+lTuhNQW3iGxZ18UQApw/E=
 github.com/yuin/goldmark v1.4.13/go.mod h1:6yULJ656Px+3vBD8DxQVa3kxgyrAnzto9xy5taEt/CY=
-github.com/yuin/goldmark v1.8.2 h1:kEGpgqJXdgbkhcOgBxkC0X0PmoPG1ZyoZ117rDVp4zE=
+github.com/yuin/goldmark v1.8.5 h1:r6N5afV5qj/5S4UTch8agZHJ8UxNCMwX7WjkkJam2NA=
-github.com/yuin/goldmark v1.8.2/go.mod h1:ip/1k0VRfGynBgxOz0yCqHrbZXhcjxyuS66Brc7iBKg=
+github.com/yuin/goldmark v1.8.5/go.mod h1:ip/1k0VRfGynBgxOz0yCqHrbZXhcjxyuS66Brc7iBKg=
+go.yaml.in/yaml/v3 v3.0.5 h1:N6y/pJk8buWs9NY5ERU2HSMfm+IuD/OtfdAnq6kESPw=
+go.yaml.in/yaml/v3 v3.0.5/go.mod h1:HVTZu1O7/Vkt2N+BFy8Zza+lnLsABggaTM2ZpNIGuKg=
 golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
 golang.org/x/crypto v0.0.0-20210921155107-089bfa567519/go.mod h1:GvvjBRRGRdwPK5ydBHafDWAxML/pGHZbMvKqRZ5+Abc=
 golang.org/x/crypto v0.13.0/go.mod h1:y6Z2r+Rw4iayiXXAIxJIDAJ1zMW4yaTpebo8fPOliYc=
@@ -87,8 +87,8 @@ golang.org/x/crypto v0.19.0/go.mod h1:Iy9bg/ha4yyC70EfRS8jz+B6ybOBKMaSxLj6P6oBDf
 golang.org/x/crypto v0.23.0/go.mod h1:CKFgDieR+mRhux2Lsu27y0fO304Db0wZe70UKqHu0v8=
 golang.org/x/image v0.0.0-20210504121937-7319ad40d33e/go.mod h1:FeLwcggjj3mMvU+oOTbSwawSJRM1uh48EjtB4UJZlP0=
 golang.org/x/image v0.18.0/go.mod h1:4yyo5vMFQjVjUcVk4jEQcU9MGy/rulF5WvUILseCM2E=
-golang.org/x/image v0.44.0 h1:+tDekMZED9+LrtB3G5xzRggpVh9CARjZqROla3R3R+I=
+golang.org/x/image v0.45.0 h1:FMb1nTbH5H9vF55SriQHgFw5GnNL9Jg6L25BwXKzhB0=
-golang.org/x/image v0.44.0/go.mod h1:V8K3KE9KKKE+pLpQDOeN18w9oacNSvy1tDOirTu4xtY=
+golang.org/x/image v0.45.0/go.mod h1:n62x/7RqlwXDvGsSU4u6IUTUf6KghUZ9Bt7cG/T9Fx4=
 golang.org/x/mod v0.6.0-dev.0.20220419223038-86c51ed26bb4/go.mod h1:jJ57K6gSWd91VN4djpZkiMVwK6gcyfeH4XE8wZrZaV4=
 golang.org/x/mod v0.8.0/go.mod h1:iBbtSCu2XBx23ZKBPSOrRkjjQPZFPuis4dIYUhu/chs=
 golang.org/x/mod v0.12.0/go.mod h1:iBbtSCu2XBx23ZKBPSOrRkjjQPZFPuis4dIYUhu/chs=
@@ -103,8 +103,8 @@ golang.org/x/net v0.10.0/go.mod h1:0qNGK6F8kojg2nk9dLZ2mShWaEBan6FAoqfSigmmuDg=
 golang.org/x/net v0.15.0/go.mod h1:idbUs1IY1+zTqbi8yxTbhexhEEk5ur9LInksu6HrEpk=
 golang.org/x/net v0.21.0/go.mod h1:bIjVDfnllIU7BJ2DNgfnXvpSvtn8VRwhlsaeUTyUS44=
 golang.org/x/net v0.25.0/go.mod h1:JkAGAh7GEvH74S6FOH42FLoXpXbE/aqXSrIQjXgsiwM=
-golang.org/x/net v0.55.0 h1:bcvxaJn3e1U6InsFWt1JUq1aSjnRxLzT2rtD2KfkDF8=
+golang.org/x/net v0.58.0 h1:ynWG7rqYi4ccpTEuPZ2QGWHktVEM9DMCj9yzDE0Q7To=
-golang.org/x/net v0.55.0/go.mod h1:L5U2KuzuOe1lY7Z+aWVIKK6qEeJXnXV9yzGA+WCHJww=
+golang.org/x/net v0.58.0/go.mod h1:YwCddHnFlT7eLQqVprV19OnhLGtc5xOKgE0RyqgfWAU=
 golang.org/x/sync v0.0.0-20190423024810-112230192c58/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sync v0.0.0-20220722155255-886fb9371eb4/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sync v0.1.0/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
@@ -122,6 +122,8 @@ golang.org/x/sys v0.8.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.12.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.17.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
 golang.org/x/sys v0.20.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
+golang.org/x/sys v0.47.0 h1:o7XGOvZQCADBQQ4Y7VNq2dRWQR7JmOUW8Kxx4ZsNgWs=
+golang.org/x/sys v0.47.0/go.mod h1:4GL1E5IUh+htKOUEOaiffhrAeqysfVGipDYzABqnCmw=
 golang.org/x/telemetry v0.0.0-20240228155512-f48c80bd79b2/go.mod h1:TeRTkGYfJXctD9OcfyVLyj2J3IxLnKwHJR8f4D8a3YE=
 golang.org/x/term v0.0.0-20201126162022-7de9c90e9dd1/go.mod h1:bj7SfCRtBDWHUb9snDiAeCFNEtKQo2Wmx5Cou7ajbmo=
 golang.org/x/term v0.0.0-20210927222741-03fcf44c2211/go.mod h1:jbD1KX2456YbFQfuXm/mYQcufACuNUgVhRMnK/tPxf8=
@@ -140,8 +142,8 @@ golang.org/x/text v0.13.0/go.mod h1:TvPlkZtksWOMsz7fbANvkp4WM8x/WCo/om8BMLbz+aE=
 golang.org/x/text v0.14.0/go.mod h1:18ZOQIKpY8NJVqYksKHtTdi31H5itFRjB5/qKTNYzSU=
 golang.org/x/text v0.15.0/go.mod h1:18ZOQIKpY8NJVqYksKHtTdi31H5itFRjB5/qKTNYzSU=
 golang.org/x/text v0.16.0/go.mod h1:GhwF1Be+LQoKShO3cGOHzqOgRrGaYc9AvblQOmPVHnI=
-golang.org/x/text v0.40.0 h1:Ub2Z6/xjgF1WrYQz2nuITOEegKFtiIy+rieRJ5lHZKs=
+golang.org/x/text v0.41.0 h1:vz/seA0lnX87Othu2f/0L24RcgrXD9/YFTSuGjj3rH8=
-golang.org/x/text v0.40.0/go.mod h1:hpnzDAfGV753zIKo+wk3u1bVKCGPbrnF7+7LBF/UHVY=
+golang.org/x/text v0.41.0/go.mod h1:jvf1O8ajNzZqhSrQBPbutR/EB83Cc0CFrezNQIwbb5M=
 golang.org/x/tools v0.0.0-20180917221912-90fa682c2a6e/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
 golang.org/x/tools v0.0.0-20191119224855-298f0cb1881e/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
 golang.org/x/tools v0.1.12/go.mod h1:hNGJHUnrk76NpqgfD5Aqm5Crs+Hm0VOH/i9J2+nxYbc=
@@ -153,10 +155,8 @@ gonum.org/v1/plot v0.17.0 h1:d0DwPVBe9jnEGqQBoZGl/P2M9WciJbG2CnV59C9QBT4=
 gonum.org/v1/plot v0.17.0/go.mod h1:ipt2GUN1oqzr2O7wCjLDtw1ShfIYYNBp4o0O1Ez5B3Y=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
-gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=
+modernc.org/knuth v0.6.0 h1:zLv0hzgdcpcCUB/iMwpQvn9m/iciqO/hyNXlpWymMKU=
-gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
+modernc.org/knuth v0.6.0/go.mod h1:ISAZV+URZIlE8h1BwNVg1NzpwHKndV5lQ13NPPj3tds=
-modernc.org/knuth v0.5.5 h1:6lap2U/ISm8aC/4NU58ALFCRllNPaK0EZcIGY/oDgUg=
-modernc.org/knuth v0.5.5/go.mod h1:e5SBb35HQBj2aFwbBO3ClPcViLY3Wi0LzaOd7c/3qMk=
 modernc.org/token v1.1.0 h1:Xl7Ap9dKaEs5kLoOQeQmPWevfnk/DM5qcLcYlA8ys6Y=
 modernc.org/token v1.1.0/go.mod h1:UGzOrNV1mAFSEB63lOFHIpNRUVMvYTc6yu1SMY/XTDM=
 rsc.io/pdf v0.1.1 h1:k1MczvYDUvJBe93bYd7wrZLLUEcLZAuF824/I4e5Xr4=

internal/webui/wasm.go

@@ -17,7 +17,6 @@
 package webui
 
 import (
-	"encoding/base64"
 	"encoding/json"
 	"fmt"
 	"syscall/js"
@@ -57,6 +56,9 @@ func registerCallback(name string, fn func([]js.Value) (any, error)) {
 		if err != nil {
 			return encodeResult(apiResult{OK: false, Error: err.Error()})
 		}
+		if result, ok := data.(js.Value); ok {
+			return result
+		}
 		return encodeResult(apiResult{OK: true, Data: data})
 	})
 	js.Global().Set(name, cb)
@@ -113,7 +115,18 @@ func renderPage(args []js.Value) (any, error) {
 	if len(args) == 0 {
 		return nil, fmt.Errorf("missing page index")
 	}
-	return currentSession.RenderPageSVG(args[0].Int())
+	page, err := currentSession.RenderPageSVG(args[0].Int())
+	if err != nil {
+		return nil, err
+	}
+	return successResult(map[string]any{
+		"index":  page.Index,
+		"number": page.Number,
+		"id":     page.ID,
+		"width":  page.Width,
+		"height": page.Height,
+		"svg":    page.SVG,
+	}), nil
 }
 
 // exportFormats 获取导出格式
@@ -137,14 +150,14 @@ func exportPage(args []js.Value) (any, error) {
 	if err != nil {
 		return nil, err
 	}
-	return map[string]any{
+	return successResult(map[string]any{
-		"base64":    base64.StdEncoding.EncodeToString(data),
+		"bytes":     bytesToJS(data),
 		"size":      len(data),
 		"format":    format.Value,
 		"label":     format.Label,
 		"extension": format.Extension,
 		"mime":      format.MIME,
-	}, nil
+	}), nil
 }
 
 // exportPDF 导出OFD文档为PDF
@@ -158,10 +171,29 @@ func exportPDF(args []js.Value) (any, error) {
 	if err != nil {
 		return nil, err
 	}
-	return map[string]any{
+	return successResult(map[string]any{
-		"base64": base64.StdEncoding.EncodeToString(data),
+		"bytes": bytesToJS(data),
 		"size":  len(data),
-	}, nil
+	}), nil
+}
+
+// successResult 创建成功接口结果
+// 入参: data 返回数据
+// 返回: js.Value 接口结果
+func successResult(data any) js.Value {
+	result := js.Global().Get("Object").New()
+	result.Set("ok", true)
+	result.Set("data", data)
+	return result
+}
+
+// bytesToJS 将字节数据转换为Uint8Array
+// 入参: data 字节数据
+// 返回: js.Value Uint8Array对象
+func bytesToJS(data []byte) js.Value {
+	value := js.Global().Get("Uint8Array").New(len(data))
+	js.CopyBytesToJS(value, data)
+	return value
 }
 
 // fontSystemNames 获取系统字体名称

internal/webui/webui.go

@@ -43,9 +43,12 @@ type FontInfo = ofdgo.FontInfo
 type SignatureInfo struct {
 	ID                   string               `json:"id"`
 	Type                 string               `json:"type"`
-	IntegrityValid    bool                 `json:"integrityValid"`
+	Valid                bool                 `json:"valid"`
 	Version              string               `json:"version,omitempty"`
 	SealType             string               `json:"sealType,omitempty"`
+	SealID               string               `json:"sealId,omitempty"`
+	SealName             string               `json:"sealName,omitempty"`
+	SealVendor           string               `json:"sealVendor,omitempty"`
 	Signer               string               `json:"signer,omitempty"`
 	SignatureDateTime    string               `json:"signatureDateTime,omitempty"`
 	Provider             string               `json:"provider,omitempty"`
@@ -55,15 +58,21 @@ type SignatureInfo struct {
 	SealOK               bool                 `json:"sealOK"`
 	SealMatchOK          bool                 `json:"sealMatchOK"`
 	CertOK               bool                 `json:"certOK"`
+	SignatureTimeChecked bool                 `json:"signatureTimeChecked,omitempty"`
+	SignatureTimeOK      bool                 `json:"signatureTimeOK,omitempty"`
+	SealTimeChecked      bool                 `json:"sealTimeChecked,omitempty"`
+	SealTimeOK           bool                 `json:"sealTimeOK,omitempty"`
+	SealCertTimeChecked  bool                 `json:"sealCertTimeChecked,omitempty"`
+	SealCertTimeOK       bool                 `json:"sealCertTimeOK,omitempty"`
 	CertTimeChecked      bool                 `json:"certTimeChecked,omitempty"`
 	CertTimeOK           bool                 `json:"certTimeOK,omitempty"`
 	CertTrustChecked     bool                 `json:"certTrustChecked,omitempty"`
 	CertTrustOK          bool                 `json:"certTrustOK,omitempty"`
 	ReferenceCount       int                  `json:"referenceCount"`
 	ReferencePassed      int                  `json:"referencePassed"`
-	SignSerial        string               `json:"signSerial,omitempty"`
 	SignatureMethod      string               `json:"signatureMethod,omitempty"`
 	DigestMethod         string               `json:"digestMethod,omitempty"`
+	SignSerial           string               `json:"signSerial,omitempty"`
 	SignSubject          string               `json:"signSubject,omitempty"`
 	SignIssuer           string               `json:"signIssuer,omitempty"`
 	SealSubject          string               `json:"sealSubject,omitempty"`
@@ -222,10 +231,6 @@ func (s *Session) Info() DocumentInfo {
 		PageCount: len(s.doc.Pages.Page),
 		Pages:     make([]PageInfo, 0, len(s.doc.Pages.Page)),
 	}
-	if fonts, err := s.Renderer.FontInfos(); err == nil {
-		info.Fonts = fonts
-	}
-	info.FontCount = len(info.Fonts)
 	if signatures, err := s.signatureInfos(); err == nil {
 		info.Signatures = signatures
 	} else {
@@ -239,9 +244,11 @@ func (s *Session) Info() DocumentInfo {
 		info.CreationDate = docInfo.CreationDate
 		info.ModDate = docInfo.ModDate
 	}
+	pages := make([]*ofdgo.PageContent, 0, len(s.doc.Pages.Page))
 	for index, pageRef := range s.doc.Pages.Page {
 		pageInfo := PageInfo{Index: index, ID: pageRef.ID}
 		if _, page, err := s.pageContent(index); err == nil {
+			pages = append(pages, page)
 			if box, err := s.pageBox(index, page); err == nil {
 				pageInfo.Width = box.W
 				pageInfo.Height = box.H
@@ -249,6 +256,10 @@ func (s *Session) Info() DocumentInfo {
 		}
 		info.Pages = append(info.Pages, pageInfo)
 	}
+	if fonts, err := s.Renderer.FontInfosFromPages(pages); err == nil {
+		info.Fonts = fonts
+	}
+	info.FontCount = len(info.Fonts)
 	return info
 }
 
@@ -346,9 +357,12 @@ func signatureInfo(report ofdgo.SignatureVerifyReport) SignatureInfo {
 	return SignatureInfo{
 		ID:                   report.ID,
 		Type:                 string(report.Type),
-		IntegrityValid:    report.IntegrityValid(),
+		Valid:                report.Valid,
 		Version:              report.Provider.Version,
 		SealType:             report.SealType,
+		SealID:               report.SealInfo.ID,
+		SealName:             report.SealInfo.Name,
+		SealVendor:           report.SealInfo.VendorID,
 		Signer:               signatureSigner(report),
 		SignatureDateTime:    report.SignatureDateTime,
 		Provider:             report.Provider.ProviderName,
@@ -358,15 +372,21 @@ func signatureInfo(report ofdgo.SignatureVerifyReport) SignatureInfo {
 		SealOK:               report.SealOK,
 		SealMatchOK:          report.SealMatchOK,
 		CertOK:               report.CertOK,
+		SignatureTimeChecked: report.SignatureTimeChecked,
+		SignatureTimeOK:      report.SignatureTimeOK,
+		SealTimeChecked:      report.SealTimeChecked,
+		SealTimeOK:           report.SealTimeOK,
+		SealCertTimeChecked:  report.SealCertTimeChecked,
+		SealCertTimeOK:       report.SealCertTimeOK,
 		CertTimeChecked:      report.CertTimeChecked,
 		CertTimeOK:           report.CertTimeOK,
 		CertTrustChecked:     report.CertTrustChecked,
 		CertTrustOK:          report.CertTrustOK,
 		ReferenceCount:       len(report.References),
 		ReferencePassed:      signatureReferencePassed(report.References),
-		SignSerial:        report.SignCert.SerialNumber,
 		SignatureMethod:      report.SignatureMethod,
 		DigestMethod:         report.DigestMethod,
+		SignSerial:           report.SignCert.SerialNumber,
 		SignSubject:          report.SignCert.Subject,
 		SignIssuer:           report.SignCert.Issuer,
 		SealSubject:          report.SealCert.Subject,

ofdgo.go

@@ -71,6 +71,14 @@ func NewRenderer(reader *Reader, opts ...RendererOption) *Renderer {
 		DrawParams:            reader.drawParamCache,
 		CompositeGraphicUnits: reader.compositeGraphicUnitCache,
 		FontMap:               make(map[string]*canvas.FontFamily),
+		FontGIDMap:            make(map[string]map[uint16]rune),
+		FontCIDMap:            make(map[string]map[uint16]rune),
+		fontCache:             make(map[fontCacheKey]*canvas.FontFamily),
+		fontSourceCache:       make(map[string][]fontSource),
+		fontSourceUsed:        make(map[string]fontSource),
+		fontDirCandidates:     make(map[string][]fontFileCandidate),
+		textGlyphPathCache:    make(map[textGlyphPathCacheKey]textGlyphPathCacheValue),
+		templatePageCache:     make(map[string]*PageContent),
 	}
 	for _, opt := range opts {
 		opt(r)

ofdgo_action.go

@@ -0,0 +1,198 @@
+// Copyright 2025-2026 肖其顿 (XIAO QI DUN)
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package ofdgo
+
+import (
+	"encoding/xml"
+	"strconv"
+)
+
+// Action 动作
+type Action struct {
+	Event  string  `xml:"Event,attr"`
+	Region *Region `xml:"Region"`
+	Goto   *Goto   `xml:"Goto"`
+	URI    *URI    `xml:"URI"`
+	GotoA  *GotoA  `xml:"GotoA"`
+	Sound  *Sound  `xml:"Sound"`
+	Movie  *Movie  `xml:"Movie"`
+}
+
+// Goto 文档内跳转动作
+type Goto struct {
+	Dest     *Dest         `xml:"Dest"`
+	Bookmark *GotoBookmark `xml:"Bookmark"`
+}
+
+// Dest 文档内跳转目标
+type Dest struct {
+	Type   string  `xml:"Type,attr"`
+	PageID string  `xml:"PageID,attr"`
+	Left   float64 `xml:"Left"`
+	Right  float64 `xml:"Right"`
+	Top    float64 `xml:"Top"`
+	Bottom float64 `xml:"Bottom"`
+	Zoom   float64 `xml:"Zoom"`
+}
+
+// GotoBookmark 书签跳转目标
+type GotoBookmark struct {
+	Name string `xml:"Name,attr"`
+}
+
+// URI URI动作
+type URI struct {
+	URI  string `xml:"URI,attr"`
+	Base string `xml:"Base,attr"`
+}
+
+// GotoA 附件动作
+type GotoA struct {
+	AttachID  string `xml:"AttachID,attr"`
+	NewWindow *bool  `xml:"NewWindow,attr"`
+}
+
+// Sound 音频动作
+type Sound struct {
+	ResourceID  string `xml:"ResourceID,attr"`
+	Volume      *int   `xml:"Volume,attr"`
+	Repeat      bool   `xml:"Repeat,attr"`
+	Synchronous bool   `xml:"Synchronous,attr"`
+}
+
+// Movie 视频动作
+type Movie struct {
+	ResourceID string `xml:"ResourceID,attr"`
+	Operator   string `xml:"Operator,attr"`
+}
+
+// Region 动作区域
+type Region struct {
+	Area []RegionArea `xml:"Area"`
+}
+
+// RegionArea 动作区域分路径
+type RegionArea struct {
+	Start   string          `xml:"Start,attr"`
+	Command []RegionCommand `xml:"-"`
+}
+
+// RegionCommand 动作区域绘制指令
+type RegionCommand struct {
+	Type           string
+	Point1         string
+	Point2         string
+	Point3         string
+	EllipseSize    string
+	RotationAngle  string
+	LargeArc       string
+	SweepDirection string
+	EndPoint       string
+}
+
+// UnmarshalXML 解析跳转目标
+// 入参: d XML解码器, start 起始节点
+// 返回: error 错误信息
+func (dest *Dest) UnmarshalXML(d *xml.Decoder, start xml.StartElement) error {
+	var value struct {
+		Left   *float64 `xml:"Left"`
+		Right  *float64 `xml:"Right"`
+		Top    *float64 `xml:"Top"`
+		Bottom *float64 `xml:"Bottom"`
+		Zoom   *float64 `xml:"Zoom"`
+	}
+	dest.Type = attrValue(start, "Type")
+	dest.PageID = attrValue(start, "PageID")
+	dest.Left = actionFloatAttr(start, "Left")
+	dest.Right = actionFloatAttr(start, "Right")
+	dest.Top = actionFloatAttr(start, "Top")
+	dest.Bottom = actionFloatAttr(start, "Bottom")
+	dest.Zoom = actionFloatAttr(start, "Zoom")
+	if err := d.DecodeElement(&value, &start); err != nil {
+		return err
+	}
+	if value.Left != nil {
+		dest.Left = *value.Left
+	}
+	if value.Right != nil {
+		dest.Right = *value.Right
+	}
+	if value.Top != nil {
+		dest.Top = *value.Top
+	}
+	if value.Bottom != nil {
+		dest.Bottom = *value.Bottom
+	}
+	if value.Zoom != nil {
+		dest.Zoom = *value.Zoom
+	}
+	return nil
+}
+
+// UnmarshalXML 解析视频动作并应用默认值
+// 入参: d XML解码器, start 起始节点
+// 返回: error 错误信息
+func (m *Movie) UnmarshalXML(d *xml.Decoder, start xml.StartElement) error {
+	type movie Movie
+	value := movie{Operator: "Play"}
+	if err := d.DecodeElement(&value, &start); err != nil {
+		return err
+	}
+	*m = Movie(value)
+	return nil
+}
+
+// UnmarshalXML 解析动作区域分路径并保留指令顺序
+// 入参: d XML解码器, start 起始节点
+// 返回: error 错误信息
+func (a *RegionArea) UnmarshalXML(d *xml.Decoder, start xml.StartElement) error {
+	*a = RegionArea{Start: attrValue(start, "Start")}
+	for {
+		tok, err := d.Token()
+		if err != nil {
+			return err
+		}
+		switch node := tok.(type) {
+		case xml.StartElement:
+			command := RegionCommand{
+				Type:           node.Name.Local,
+				Point1:         attrValue(node, "Point1"),
+				Point2:         attrValue(node, "Point2"),
+				Point3:         attrValue(node, "Point3"),
+				EllipseSize:    attrValue(node, "EllipseSize"),
+				RotationAngle:  attrValue(node, "RotationAngle"),
+				LargeArc:       attrValue(node, "LargeArc"),
+				SweepDirection: attrValue(node, "SweepDirection"),
+				EndPoint:       attrValue(node, "EndPoint"),
+			}
+			a.Command = append(a.Command, command)
+			if err := d.Skip(); err != nil {
+				return err
+			}
+		case xml.EndElement:
+			if node.Name.Local == start.Name.Local {
+				return nil
+			}
+		}
+	}
+}
+
+// actionFloatAttr 获取动作浮点属性
+// 入参: start 起始节点, name 属性名
+// 返回: float64 属性值
+func actionFloatAttr(start xml.StartElement, name string) float64 {
+	value, _ := strconv.ParseFloat(attrValue(start, name), 64)
+	return value
+}

ofdgo_doc.go

@@ -23,14 +23,19 @@ type Document struct {
 	Pages       Pages       `xml:"Pages"`
 	Outlines    Outlines    `xml:"Outlines"`
 	Permissions Permissions `xml:"Permissions"`
+	Actions     []Action    `xml:"Actions>Action"`
+	Bookmarks   Bookmarks   `xml:"Bookmarks"`
 	Annotations string      `xml:"Annotations"`
 	Signatures  string      `xml:"Signatures"`
 	Attachments Attachments `xml:"Attachments"`
+	CustomTags  CustomTags  `xml:"CustomTags"`
 	Extensions  Extensions  `xml:"Extensions"`
 }
 
 // Extensions 扩展集合
 type Extensions struct {
+	XMLName   xml.Name    `xml:"Extensions"`
+	Path      string      `xml:",chardata"`
 	Extension []Extension `xml:"Extension"`
 }
 
@@ -42,7 +47,8 @@ type Extension struct {
 	Date       string          `xml:"Date,attr"`
 	RefID      string          `xml:"RefId,attr"`
 	Property   []Property      `xml:"Property"`
-	Data       string     `xml:"Data"`
+	ExtendData []string        `xml:"ExtendData"`
+	Data       []ExtensionData `xml:"Data"`
 }
 
 // Property 扩展属性
@@ -52,16 +58,45 @@ type Property struct {
 	Type  string `xml:"Type,attr"`
 }
 
+// ExtensionData 扩展数据
+type ExtensionData struct {
+	Attr    []xml.Attr `xml:",any,attr"`
+	Content string     `xml:",innerxml"`
+}
+
 // Attachments 附件集合
 type Attachments struct {
+	XMLName    xml.Name     `xml:"Attachments"`
+	Path       string       `xml:",chardata"`
 	Attachment []Attachment `xml:"Attachment"`
 }
 
 // Attachment 附件信息
 type Attachment struct {
-	Name string `xml:"Name,attr"`
-	File string `xml:"File,attr"`
 	ID           string   `xml:"ID,attr"`
+	Name         string   `xml:"Name,attr"`
+	Format       string   `xml:"Format,attr"`
+	CreationDate string   `xml:"CreationDate,attr"`
+	ModDate      string   `xml:"ModDate,attr"`
+	Size         *float64 `xml:"Size,attr"`
+	Visible      bool     `xml:"Visible,attr"`
+	Usage        string   `xml:"Usage,attr"`
+	FileLoc      string   `xml:"FileLoc"`
+}
+
+// CustomTags 自定义标引集合
+type CustomTags struct {
+	XMLName   xml.Name    `xml:"CustomTags"`
+	Path      string      `xml:",chardata"`
+	CustomTag []CustomTag `xml:"CustomTag"`
+}
+
+// CustomTag 自定义标引
+type CustomTag struct {
+	TypeID    string `xml:"TypeID,attr"`
+	NameSpace string `xml:"NameSpace,attr"`
+	SchemaLoc string `xml:"SchemaLoc"`
+	FileLoc   string `xml:"FileLoc"`
 }
 
 // CommonData 文档公共数据
@@ -101,6 +136,17 @@ type TemplatePage struct {
 	ZOrder  string `xml:"ZOrder,attr"`
 }
 
+// Bookmarks 书签集合
+type Bookmarks struct {
+	Bookmark []Bookmark `xml:"Bookmark"`
+}
+
+// Bookmark 书签
+type Bookmark struct {
+	Name string `xml:"Name,attr"`
+	Dest Dest   `xml:"Dest"`
+}
+
 // Outlines 大纲集合
 type Outlines struct {
 	OutlineElem []OutlineElem `xml:"OutlineElem"`
@@ -110,13 +156,146 @@ type Outlines struct {
 type OutlineElem struct {
 	Title       string        `xml:"Title,attr"`
 	Count       int           `xml:"Count,attr"`
-	Actions string `xml:"Actions"`
+	Expanded    bool          `xml:"Expanded,attr"`
+	Actions     []Action      `xml:"Actions>Action"`
+	OutlineElem []OutlineElem `xml:"OutlineElem"`
 }
 
 // Permissions 权限声明
 type Permissions struct {
 	Edit          bool         `xml:"Edit"`
-	Print  bool `xml:"Print"`
+	Annot         bool         `xml:"Annot"`
 	Export        bool         `xml:"Export"`
-	Copy   bool `xml:"Copy"`
+	Signature     bool         `xml:"Signature"`
+	Watermark     bool         `xml:"Watermark"`
+	PrintScreen   bool         `xml:"PrintScreen"`
+	Print         bool         `xml:"-"`
+	Copies        int          `xml:"-"`
+	Copy          bool         `xml:"CopyText"`
+	ContentRegist bool         `xml:"ContentRegist"`
+	ValidPeriod   *ValidPeriod `xml:"ValidPeriod"`
+}
+
+// ValidPeriod 文档访问有效期
+type ValidPeriod struct {
+	StartDate string `xml:"StartDate,attr"`
+	EndDate   string `xml:"EndDate,attr"`
+}
+
+// UnmarshalXML 解析文档并应用权限默认值
+// 入参: d XML解码器, start 起始节点
+// 返回: error 错误信息
+func (doc *Document) UnmarshalXML(d *xml.Decoder, start xml.StartElement) error {
+	type document Document
+	value := document{Permissions: defaultPermissions()}
+	if err := d.DecodeElement(&value, &start); err != nil {
+		return err
+	}
+	*doc = Document(value)
+	return nil
+}
+
+// UnmarshalXML 解析附件并应用默认值
+// 入参: d XML解码器, start 起始节点
+// 返回: error 错误信息
+func (a *Attachment) UnmarshalXML(d *xml.Decoder, start xml.StartElement) error {
+	type attachment Attachment
+	value := attachment{Visible: true, Usage: "none"}
+	if err := d.DecodeElement(&value, &start); err != nil {
+		return err
+	}
+	*a = Attachment(value)
+	return nil
+}
+
+// UnmarshalXML 解析大纲节点并应用默认值
+// 入参: d XML解码器, start 起始节点
+// 返回: error 错误信息
+func (o *OutlineElem) UnmarshalXML(d *xml.Decoder, start xml.StartElement) error {
+	type outlineElem OutlineElem
+	value := outlineElem{Expanded: true}
+	if err := d.DecodeElement(&value, &start); err != nil {
+		return err
+	}
+	*o = OutlineElem(value)
+	return nil
+}
+
+// UnmarshalXML 解析文档权限并应用默认值
+// 入参: d XML解码器, start 起始节点
+// 返回: error 错误信息
+func (p *Permissions) UnmarshalXML(d *xml.Decoder, start xml.StartElement) error {
+	var value struct {
+		Edit          *bool        `xml:"Edit"`
+		Annot         *bool        `xml:"Annot"`
+		Export        *bool        `xml:"Export"`
+		Signature     *bool        `xml:"Signature"`
+		Watermark     *bool        `xml:"Watermark"`
+		PrintScreen   *bool        `xml:"PrintScreen"`
+		Copy          *bool        `xml:"CopyText"`
+		ContentRegist *bool        `xml:"ContentRegist"`
+		Print         *print       `xml:"Print"`
+		ValidPeriod   *ValidPeriod `xml:"ValidPeriod"`
+	}
+	if err := d.DecodeElement(&value, &start); err != nil {
+		return err
+	}
+	*p = defaultPermissions()
+	if value.Edit != nil {
+		p.Edit = *value.Edit
+	}
+	if value.Annot != nil {
+		p.Annot = *value.Annot
+	}
+	if value.Export != nil {
+		p.Export = *value.Export
+	}
+	if value.Signature != nil {
+		p.Signature = *value.Signature
+	}
+	if value.Watermark != nil {
+		p.Watermark = *value.Watermark
+	}
+	if value.PrintScreen != nil {
+		p.PrintScreen = *value.PrintScreen
+	}
+	if value.Copy != nil {
+		p.Copy = *value.Copy
+	}
+	if value.ContentRegist != nil {
+		p.ContentRegist = *value.ContentRegist
+	}
+	if value.Print != nil {
+		if value.Print.Printable != nil {
+			p.Print = *value.Print.Printable
+		}
+		if value.Print.Copies != nil {
+			p.Copies = *value.Print.Copies
+		}
+	}
+	p.ValidPeriod = value.ValidPeriod
+	return nil
+}
+
+// print 打印权限节点
+type print struct {
+	Printable *bool `xml:"Printable,attr"`
+	Copies    *int  `xml:"Copies,attr"`
+}
+
+// defaultPermissions 获取默认文档权限
+// 返回: Permissions 文档权限
+func defaultPermissions() Permissions {
+	return Permissions{
+		Edit:          true,
+		Annot:         true,
+		Export:        true,
+		Signature:     true,
+		Watermark:     true,
+		PrintScreen:   true,
+		Print:         true,
+		Copies:        -1,
+		Copy:          true,
+		ContentRegist: true,
+	}
 }

ofdgo_font_fs.go

@@ -34,6 +34,7 @@ type FontFile struct {
 type FontFS struct {
 	files      map[string][]byte
 	names      []string
+	candidates []fontFileCandidate
 }
 
 // NewFontFS 创建内存字体文件系统
@@ -54,6 +55,7 @@ func NewFontFS(fonts []FontFile) *FontFS {
 		fsys.files[name] = append([]byte(nil), font.Data...)
 	}
 	sort.Strings(fsys.names)
+	fsys.candidates = fontFileCandidates(fsys.names, path.Base)
 	return fsys
 }
 
@@ -70,18 +72,20 @@ func (fsys *FontFS) Len() int {
 // 入参: name 字体文件名
 // 返回: fs.File 字体文件, error 错误信息
 func (fsys *FontFS) Open(name string) (fs.File, error) {
-	name = cleanFontName(name)
+	if !fs.ValidPath(name) {
+		return nil, &fs.PathError{Op: "open", Path: name, Err: fs.ErrInvalid}
+	}
 	if name == "." {
 		return &fontDir{entries: fsys.entries()}, nil
 	}
-	data, ok := fsys.files[name]
+	data, ok := fsys.files[strings.ToLower(name)]
 	if !ok {
-		return nil, fs.ErrNotExist
+		return nil, &fs.PathError{Op: "open", Path: name, Err: fs.ErrNotExist}
 	}
 	return &fontMemFile{
 		Reader: bytes.NewReader(data),
 		info: fontFileInfo{
-			name: name,
+			name: strings.ToLower(name),
 			size: int64(len(data)),
 		},
 	}, nil
@@ -91,9 +95,15 @@ func (fsys *FontFS) Open(name string) (fs.File, error) {
 // 入参: name 目录名
 // 返回: []fs.DirEntry 目录条目, error 错误信息
 func (fsys *FontFS) ReadDir(name string) ([]fs.DirEntry, error) {
-	name = cleanFontName(name)
+	if !fs.ValidPath(name) {
+		return nil, &fs.PathError{Op: "readdir", Path: name, Err: fs.ErrInvalid}
+	}
 	if name != "." {
-		return nil, fs.ErrNotExist
+		err := fs.ErrNotExist
+		if _, ok := fsys.files[strings.ToLower(name)]; ok {
+			err = fs.ErrInvalid
+		}
+		return nil, &fs.PathError{Op: "readdir", Path: name, Err: err}
 	}
 	return fsys.entries(), nil
 }
@@ -102,10 +112,7 @@ func (fsys *FontFS) ReadDir(name string) ([]fs.DirEntry, error) {
 // 入参: pattern 匹配模式
 // 返回: []string 字体文件列表, error 错误信息
 func (fsys *FontFS) Glob(pattern string) ([]string, error) {
-	if _, err := path.Match(pattern, ""); err != nil {
+	return fs.Glob(struct{ fs.FS }{fsys}, pattern)
-		return nil, err
-	}
-	return fsys.match(pattern), nil
 }
 
 // Match 匹配指定字体名称
@@ -146,11 +153,10 @@ func (fsys *FontFS) matchStyle(pattern string, bold, italic bool) []string {
 // 入参: patterns 匹配模式列表, bold 是否粗体, italic 是否斜体
 // 返回: []string 字体文件列表
 func (fsys *FontFS) matchPatternsStyle(patterns []string, bold, italic bool) []string {
-	files := fontFileCandidates(fsys.names, path.Base)
+	matches := make([]fontFileMatch, 0, len(fsys.candidates))
-	matches := make([]fontFileMatch, 0, len(files))
+	seen := make(map[string]int, len(fsys.candidates))
-	seen := make(map[string]int, len(files))
 	for _, matcher := range newFontPatternMatchers(patterns) {
-		for _, file := range files {
+		for _, file := range fsys.candidates {
 			rank := matcher.rankCandidate(file)
 			appendFontFileMatch(&matches, seen, matcher, file, rank, bold, italic)
 		}
@@ -235,6 +241,7 @@ type fontPatternMatcher struct {
 	lowerPattern string
 	stem         string
 	aliases      []string
+	priority     int
 }
 
 // newFontPatternMatcher 创建字体文件匹配器
@@ -262,8 +269,10 @@ func newFontPatternMatcher(pattern string) fontPatternMatcher {
 // 返回: []fontPatternMatcher 字体文件匹配器列表
 func newFontPatternMatchers(patterns []string) []fontPatternMatcher {
 	matchers := make([]fontPatternMatcher, 0, len(patterns))
-	for _, pattern := range patterns {
+	for priority, pattern := range patterns {
-		matchers = append(matchers, newFontPatternMatcher(pattern))
+		matcher := newFontPatternMatcher(pattern)
+		matcher.priority = priority
+		matchers = append(matchers, matcher)
 	}
 	return matchers
 }
@@ -342,6 +351,7 @@ func (m fontPatternMatcher) styleSuffixNormalized(name string) string {
 
 type fontFileMatch struct {
 	name      string
+	priority  int
 	rank      int
 	styleRank int
 	sortName  string
@@ -355,6 +365,7 @@ func appendFontFileMatch(matches *[]fontFileMatch, seen map[string]int, matcher
 	}
 	next := fontFileMatch{
 		name:      file.name,
+		priority:  matcher.priority,
 		rank:      rank,
 		styleRank: fontFileStyleRank(matcher.styleSuffixNormalized(file.normalized), bold, italic),
 		sortName:  file.lowerBase,
@@ -381,6 +392,9 @@ func sortFontFileMatches(matches []fontFileMatch) {
 // 入参: left 左侧匹配结果, right 右侧匹配结果
 // 返回: bool 左侧是否优先
 func fontFileMatchLess(left, right fontFileMatch) bool {
+	if left.priority != right.priority {
+		return left.priority < right.priority
+	}
 	if left.rank != right.rank {
 		return left.rank < right.rank
 	}
@@ -513,6 +527,9 @@ func (d *fontDir) Close() error {
 // 返回: []fs.DirEntry 目录条目, error 错误信息
 func (d *fontDir) ReadDir(count int) ([]fs.DirEntry, error) {
 	if d.offset >= len(d.entries) {
+		if count <= 0 {
+			return nil, nil
+		}
 		return nil, io.EOF
 	}
 	if count <= 0 || d.offset+count > len(d.entries) {

ofdgo_font_info.go

@@ -67,6 +67,30 @@ func (r *Reader) Fonts() ([]Font, error) {
 // FontInfos 获取OFD字体诊断信息
 // 返回: []FontInfo 字体诊断列表, error 错误信息
 func (r *Renderer) FontInfos() ([]FontInfo, error) {
+	doc, err := r.fontInfoDocument()
+	if err != nil {
+		return nil, err
+	}
+	return r.fontInfos(doc, nil)
+}
+
+// FontInfosFromPages 从页面内容获取OFD字体诊断信息
+// 入参: pages 页面内容列表
+// 返回: []FontInfo 字体诊断列表, error 错误信息
+func (r *Renderer) FontInfosFromPages(pages []*PageContent) ([]FontInfo, error) {
+	doc, err := r.fontInfoDocument()
+	if err != nil {
+		return nil, err
+	}
+	if pages == nil {
+		pages = []*PageContent{}
+	}
+	return r.fontInfos(doc, pages)
+}
+
+// fontInfoDocument 获取字体诊断文档结构
+// 返回: *Document 文档结构, error 错误信息
+func (r *Renderer) fontInfoDocument() (*Document, error) {
 	if r == nil || r.Reader == nil {
 		return nil, fmt.Errorf("ofd renderer is not initialized")
 	}
@@ -77,11 +101,18 @@ func (r *Renderer) FontInfos() ([]FontInfo, error) {
 	if doc == nil {
 		return nil, fmt.Errorf("ofd document is not opened")
 	}
+	return doc, nil
+}
+
+// fontInfos 获取OFD字体诊断信息
+// 入参: doc 文档结构, pages 页面内容列表
+// 返回: []FontInfo 字体诊断列表, error 错误信息
+func (r *Renderer) fontInfos(doc *Document, pages []*PageContent) ([]FontInfo, error) {
 	fonts, err := r.Reader.Fonts()
 	if err != nil {
 		return nil, err
 	}
-	usage := r.fontUsage(doc)
+	usage := r.fontUsage(doc, pages)
 	infos := make([]FontInfo, 0, len(fonts)+len(usage))
 	seen := make(map[string]bool)
 	for _, font := range fonts {
@@ -137,9 +168,9 @@ func (r *Renderer) fontInfo(font Font) FontInfo {
 		}
 		return info
 	}
-	if matched, exact := r.matchFont(font.FontName, font.FamilyName); matched != "" {
+	if source, ok := r.fontSourceMatch(font.ID, &font); ok {
-		info.Matched = matched
+		info.Matched = source.name
-		if exact {
+		if source.exact {
 			info.Status = FontStatusMatched
 			info.Detail = "使用外部字体文件"
 		} else {
@@ -153,74 +184,6 @@ func (r *Renderer) fontInfo(font Font) FontInfo {
 	return info
 }
 
-// matchFont 匹配外部字体
-// 入参: names 字体名称列表
-// 返回: string 匹配字体文件, bool 是否为名称匹配
-func (r *Renderer) matchFont(names ...string) (string, bool) {
-	patterns := fontFilePatterns(names...)
-	for _, dir := range r.fontDirs {
-		if matches := r.matchFontFiles(dir, patterns, false, false); len(matches) > 0 {
-			return matches[0], true
-		}
-	}
-	for _, fsys := range r.fontFS {
-		if matcher, ok := fsys.(interface {
-			Match(...string) (string, bool)
-		}); ok {
-			if matched, exact := matcher.Match(names...); matched != "" {
-				return matched, exact
-			}
-			continue
-		}
-		if matched := matchFontFS(fsys, names...); matched != "" {
-			return matched, true
-		}
-	}
-	if !canLoadSystemFonts() {
-		for _, fsys := range r.fontFS {
-			if matched := fallbackFontFS(fsys); matched != "" {
-				return matched, false
-			}
-		}
-	}
-	return "", false
-}
-
-// matchFontFS 从字体文件系统匹配字体
-// 入参: fsys 字体文件系统, names 字体名称列表
-// 返回: string 匹配字体文件
-func matchFontFS(fsys fs.FS, names ...string) string {
-	if matches := fontFSMatches(fsys, fontFilePatterns(names...)); len(matches) > 0 {
-		return matches[0]
-	}
-	return ""
-}
-
-// fallbackFontFS 从字体文件系统获取回退字体
-// 入参: fsys 字体文件系统
-// 返回: string 回退字体文件
-func fallbackFontFS(fsys fs.FS) string {
-	for _, pattern := range fontFallbackFiles {
-		if matches := fontFSMatches(fsys, []string{pattern}); len(matches) > 0 {
-			return matches[0]
-		}
-	}
-	all, _ := fs.Glob(fsys, "*")
-	for _, name := range all {
-		if isFontFileName(name) {
-			return name
-		}
-	}
-	return ""
-}
-
-// fontFSMatches 匹配字体文件系统中的字体文件
-// 入参: fsys 字体文件系统, patterns 匹配模式列表
-// 返回: []string 字体文件列表
-func fontFSMatches(fsys fs.FS, patterns []string) []string {
-	return fontFSMatchesStyle(fsys, patterns, false, false)
-}
-
 // fontFSMatchesStyle 匹配字体文件系统中的指定样式字体文件
 // 入参: fsys 字体文件系统, patterns 匹配模式列表, bold 是否粗体, italic 是否斜体
 // 返回: []string 字体文件列表
@@ -240,19 +203,27 @@ func fontFSMatchesStyle(fsys fs.FS, patterns []string, bold, italic bool) []stri
 }
 
 // fontUsage 统计文档字体使用次数
-// 入参: doc 文档结构
+// 入参: doc 文档结构, pages 页面内容列表, nil表示读取文档页面
 // 返回: map[string]int 字体使用次数
-func (r *Renderer) fontUsage(doc *Document) map[string]int {
+func (r *Renderer) fontUsage(doc *Document, pages []*PageContent) map[string]int {
 	usage := make(map[string]int)
+	if pages == nil {
 		for _, pageRef := range doc.Pages.Page {
-		page, err := r.Reader.PageContent(pageRef)
+			if page, err := r.Reader.PageContent(pageRef); err == nil {
-		if err == nil {
 				r.countPageFonts(page, usage)
 			}
 		}
+	} else {
+		for _, page := range pages {
+			if page != nil {
+				r.countPageFonts(page, usage)
+			}
+		}
+	}
 	for _, tpl := range doc.CommonData.TemplatePage {
 		page, err := r.Reader.PageContent(Page{BaseLoc: tpl.BaseLoc})
 		if err == nil {
+			r.templatePageCache[tpl.ID] = page
 			r.countPageFonts(page, usage)
 		}
 	}

ofdgo_font_loader.go

@@ -22,6 +22,36 @@ import (
 	"github.com/tdewolff/canvas"
 )
 
+// fontSourceKind 字体来源类型
+type fontSourceKind uint8
+
+const (
+	fontSourceFile fontSourceKind = iota
+	fontSourceFS
+	fontSourceSystem
+)
+
+// fontSource 字体来源
+type fontSource struct {
+	kind  fontSourceKind
+	index int
+	name  string
+	exact bool
+}
+
+// fontSourceKey 字体来源去重键
+type fontSourceKey struct {
+	kind  fontSourceKind
+	index int
+	name  string
+}
+
+// fontCacheKey 字体加载缓存键
+type fontCacheKey struct {
+	fontSourceKey
+	style canvas.FontStyle
+}
+
 // loadFont 加载字体
 // 入参: fontID 字体ID
 // 返回: *canvas.FontFamily 字体族
@@ -37,6 +67,7 @@ func (r *Renderer) loadFont(fontID string) *canvas.FontFamily {
 	if !ok {
 		return defaultFont
 	}
+	fontStyle := canvasFontStyle(of)
 	ff := canvas.NewFontFamily(of.FontName)
 	if of.FontFile != "" {
 		if fontData, err := r.Reader.ResData(of.FontFile); err == nil {
@@ -66,13 +97,6 @@ func (r *Renderer) loadFont(fontID string) *canvas.FontFamily {
 					r.FontGIDMap[fontID] = inv
 				}
 			}
-			var fontStyle canvas.FontStyle
-			if of.Bold {
-				fontStyle |= canvas.FontBold
-			}
-			if of.Italic {
-				fontStyle |= canvas.FontItalic
-			}
 			if err := ff.LoadFont(fontData, 0, fontStyle); err == nil {
 				r.FontMap[fontID] = ff
 				return ff
@@ -81,86 +105,157 @@ func (r *Renderer) loadFont(fontID string) *canvas.FontFamily {
 		}
 		return nil
 	}
-	var fontStyle canvas.FontStyle
+	for _, source := range r.fontSources(fontID, of, fontStyle) {
-	if of.Bold {
+		if loaded := r.loadFontSource(ff, source, fontStyle); loaded != nil {
-		fontStyle |= canvas.FontBold
+			r.FontMap[fontID] = loaded
-	}
+			r.fontSourceUsed[fontID] = source
-	if of.Italic {
+			return loaded
-		fontStyle |= canvas.FontItalic
-	}
-	boldStyle := fontStyle&canvas.FontBold != 0
-	italicStyle := fontStyle&canvas.FontItalic != 0
-	patterns := fontFilePatterns(of.FontName, of.FamilyName)
-	for _, dir := range r.fontDirs {
-		for _, m := range r.matchFontFiles(dir, patterns, boldStyle, italicStyle) {
-			if err := ff.LoadFontFile(m, fontStyle); err == nil {
-				r.FontMap[fontID] = ff
-				return ff
-			}
-		}
-	}
-	for _, fsys := range r.fontFS {
-		for _, m := range fontFSMatchesStyle(fsys, patterns, boldStyle, italicStyle) {
-			resData, err := fs.ReadFile(fsys, m)
-			if err == nil {
-				if err := ff.LoadFont(resData, 0, fontStyle); err == nil {
-					r.FontMap[fontID] = ff
-					return ff
-				}
-			}
-		}
-	}
-	if !canLoadSystemFonts() {
-		for _, fsys := range r.fontFS {
-			if matches, err := fs.Glob(fsys, "*"); err == nil {
-				for _, m := range matches {
-					resData, err := fs.ReadFile(fsys, m)
-					if err == nil {
-						if err := ff.LoadFont(resData, 0, fontStyle); err == nil {
-							r.FontMap[fontID] = ff
-							return ff
-						}
-					}
-				}
-			}
-		}
-		r.FontMap[fontID] = defaultFont
-		return defaultFont
-	}
-	names := []string{of.FamilyName, of.FontName}
-	for _, name := range names {
-		if name == "" {
-			continue
-		}
-		for _, targetName := range fontSystemNames(name) {
-			for _, m := range r.matchFontFiles(systemFontDir(), fontFilePatterns(targetName), boldStyle, italicStyle) {
-				if err := ff.LoadFontFile(m, fontStyle); err == nil {
-					r.FontMap[fontID] = ff
-					return ff
-				}
-			}
-			if err := ff.LoadSystemFont(targetName, fontStyle); err == nil {
-				r.FontMap[fontID] = ff
-				return ff
-			}
-		}
-		for _, m := range r.matchFontFiles(systemFontDir(), fontFilePatterns(name), boldStyle, italicStyle) {
-			if err := ff.LoadFontFile(m, fontStyle); err == nil {
-				r.FontMap[fontID] = ff
-				return ff
-			}
 		}
 	}
 	r.FontMap[fontID] = defaultFont
 	return defaultFont
 }
 
+// canvasFontStyle 获取Canvas字体样式
+// 入参: font OFD字体定义
+// 返回: canvas.FontStyle Canvas字体样式
+func canvasFontStyle(font *Font) canvas.FontStyle {
+	var style canvas.FontStyle
+	if font.Bold {
+		style |= canvas.FontBold
+	}
+	if font.Italic {
+		style |= canvas.FontItalic
+	}
+	return style
+}
+
+// fontSources 获取字体来源列表
+// 入参: fontID 字体ID, font OFD字体定义, style Canvas字体样式
+// 返回: []fontSource 字体来源列表
+func (r *Renderer) fontSources(fontID string, font *Font, style canvas.FontStyle) []fontSource {
+	if sources, ok := r.fontSourceCache[fontID]; ok {
+		return sources
+	}
+	bold := style&canvas.FontBold != 0
+	italic := style&canvas.FontItalic != 0
+	patterns := fontFilePatterns(font.FontName, font.FamilyName)
+	sources := make([]fontSource, 0)
+	seen := make(map[fontSourceKey]bool)
+	for _, dir := range r.fontDirs {
+		for _, name := range r.matchFontFiles(dir, patterns, bold, italic) {
+			sources = appendFontSource(sources, seen, fontSource{kind: fontSourceFile, name: name, exact: true})
+		}
+	}
+	for index, fsys := range r.fontFS {
+		for _, name := range fontFSMatchesStyle(fsys, patterns, bold, italic) {
+			sources = appendFontSource(sources, seen, fontSource{kind: fontSourceFS, index: index, name: name, exact: true})
+		}
+	}
+	if !canLoadSystemFonts() {
+		for index, fsys := range r.fontFS {
+			names, _ := fs.Glob(fsys, "*")
+			for _, name := range names {
+				sources = appendFontSource(sources, seen, fontSource{kind: fontSourceFS, index: index, name: name})
+			}
+		}
+		r.fontSourceCache[fontID] = sources
+		return sources
+	}
+	systemDirs := systemFontDirs()
+	for _, name := range []string{font.FamilyName, font.FontName} {
+		for _, systemName := range fontSystemNames(name) {
+			systemPatterns := fontFilePatterns(systemName)
+			for _, dir := range systemDirs {
+				for _, match := range r.matchFontFiles(dir, systemPatterns, bold, italic) {
+					sources = appendFontSource(sources, seen, fontSource{kind: fontSourceFile, name: match, exact: true})
+				}
+			}
+			sources = appendFontSource(sources, seen, fontSource{kind: fontSourceSystem, name: systemName, exact: true})
+		}
+	}
+	r.fontSourceCache[fontID] = sources
+	return sources
+}
+
+// appendFontSource 追加字体来源
+// 入参: sources 字体来源列表, seen 去重映射, source 字体来源
+// 返回: []fontSource 字体来源列表
+func appendFontSource(sources []fontSource, seen map[fontSourceKey]bool, source fontSource) []fontSource {
+	if source.name == "" {
+		return sources
+	}
+	key := fontSourceKey{kind: source.kind, index: source.index, name: source.name}
+	if seen[key] {
+		return sources
+	}
+	seen[key] = true
+	return append(sources, source)
+}
+
+// fontSourceMatch 获取匹配的字体来源
+// 入参: fontID 字体ID, font OFD字体定义
+// 返回: fontSource 字体来源, bool 是否匹配
+func (r *Renderer) fontSourceMatch(fontID string, font *Font) (fontSource, bool) {
+	if source, ok := r.fontSourceUsed[fontID]; ok {
+		return source, true
+	}
+	style := canvasFontStyle(font)
+	for _, source := range r.fontSources(fontID, font, style) {
+		key := fontCacheKey{fontSourceKey: fontSourceKey{kind: source.kind, index: source.index, name: source.name}, style: style}
+		if cached, ok := r.fontCache[key]; ok {
+			if cached != nil {
+				return source, true
+			}
+			continue
+		}
+		family := canvas.NewFontFamily(font.FontName)
+		if r.loadFontSource(family, source, style) != nil {
+			return source, true
+		}
+	}
+	return fontSource{}, false
+}
+
+// loadFontSource 加载字体来源
+// 入参: family 字体族, source 字体来源, style Canvas字体样式
+// 返回: *canvas.FontFamily 字体族
+func (r *Renderer) loadFontSource(family *canvas.FontFamily, source fontSource, style canvas.FontStyle) *canvas.FontFamily {
+	key := fontCacheKey{fontSourceKey: fontSourceKey{kind: source.kind, index: source.index, name: source.name}, style: style}
+	if cached, ok := r.fontCache[key]; ok {
+		return cached
+	}
+	var err error
+	switch source.kind {
+	case fontSourceFile:
+		err = family.LoadFontFile(source.name, style)
+	case fontSourceFS:
+		var data []byte
+		data, err = fs.ReadFile(r.fontFS[source.index], source.name)
+		if err == nil {
+			err = family.LoadFont(data, 0, style)
+		}
+	case fontSourceSystem:
+		err = family.LoadSystemFont(source.name, style)
+	}
+	if err != nil {
+		r.fontCache[key] = nil
+		return nil
+	}
+	r.fontCache[key] = family
+	return family
+}
+
 // matchFontFiles 查找字体文件
 // 入参: dir 目录, patterns 模式列表, bold 是否粗体, italic 是否斜体
 // 返回: []string 文件列表
 func (r *Renderer) matchFontFiles(dir string, patterns []string, bold, italic bool) []string {
+	candidates, ok := r.fontDirCandidates[dir]
+	if !ok {
 		files, _ := filepath.Glob(filepath.Join(dir, "*"))
-	candidates := fontFileCandidates(files, filepath.Base)
+		candidates = fontFileCandidates(files, filepath.Base)
+		r.fontDirCandidates[dir] = candidates
+	}
 	matches := make([]fontFileMatch, 0, len(candidates))
 	index := make(map[string]int, len(candidates))
 	for _, matcher := range newFontPatternMatchers(patterns) {
@@ -173,15 +268,18 @@ func (r *Renderer) matchFontFiles(dir string, patterns []string, bold, italic bo
 	return fontFileMatchNames(matches)
 }
 
-// systemFontDir 获取系统字体目录
+// systemFontDirs 获取系统字体目录
-// 返回: string 字体目录
+// 返回: []string 字体目录列表
-func systemFontDir() string {
+func systemFontDirs() []string {
 	switch runtime.GOOS {
-	case "linux":
+	case "android":
-		return `/usr/share/fonts`
+		return []string{"/product/fonts", "/system/fonts"}
 	case "darwin":
-		return `/Library/Fonts`
+		return []string{`/Library/Fonts`}
-	default:
+	case "linux":
-		return `C:\Windows\Fonts`
+		return []string{`/usr/share/fonts`}
+	case "windows":
+		return []string{`C:\Windows\Fonts`}
 	}
+	return nil
 }

ofdgo_geom.go

@@ -15,6 +15,7 @@
 package ofdgo
 
 import (
+	"fmt"
 	"math"
 	"strconv"
 	"strings"
@@ -30,14 +31,18 @@ type Box struct {
 // 返回: Box 矩形对象, error 错误信息
 func ParseBox(s string) (Box, error) {
 	parts := strings.Fields(s)
-	if len(parts) < 4 {
+	if len(parts) != 4 {
-		return Box{}, nil
+		return Box{}, fmt.Errorf("invalid box: %s", s)
 	}
-	x, _ := strconv.ParseFloat(parts[0], 64)
+	var values [4]float64
-	y, _ := strconv.ParseFloat(parts[1], 64)
+	for i, part := range parts {
-	w, _ := strconv.ParseFloat(parts[2], 64)
+		value, err := strconv.ParseFloat(part, 64)
-	h, _ := strconv.ParseFloat(parts[3], 64)
+		if err != nil {
-	return Box{X: x, Y: y, W: w, H: h}, nil
+			return Box{}, fmt.Errorf("invalid box: %s", s)
+		}
+		values[i] = value
+	}
+	return Box{X: values[0], Y: values[1], W: values[2], H: values[3]}, nil
 }
 
 // Matrix 2D仿射变换矩阵

ofdgo_image.go

@@ -20,15 +20,28 @@ import (
 	"fmt"
 	"image"
 	"image/color"
+	_ "image/gif"
 
+	canvasimage "github.com/tdewolff/canvas/image"
 	_ "github.com/xiaoqidun/jbig2"
 	_ "golang.org/x/image/bmp"
+	_ "golang.org/x/image/tiff"
 )
 
 // decodeImageData 解码图片数据
 // 入参: data 图片数据
 // 返回: image.Image 图片对象, string 图片格式, error 错误信息
 func decodeImageData(data []byte) (image.Image, string, error) {
+	if isJPEGData(data) {
+		if img, err := canvasimage.NewJPEGImage(bytes.NewReader(data)); err == nil {
+			return img, "jpeg", nil
+		}
+	}
+	if isPNGData(data) {
+		if img, err := canvasimage.NewPNGImage(bytes.NewReader(data)); err == nil {
+			return img, "png", nil
+		}
+	}
 	img, format, err := image.Decode(bytes.NewReader(data))
 	if err == nil {
 		return img, normalizeSealType(format), nil
@@ -39,6 +52,20 @@ func decodeImageData(data []byte) (image.Image, string, error) {
 	return nil, "", err
 }
 
+// isJPEGData 判断是否为JPEG图片数据
+// 入参: data 图片数据
+// 返回: bool 是否为JPEG图片数据
+func isJPEGData(data []byte) bool {
+	return len(data) >= 2 && data[0] == 0xFF && data[1] == 0xD8
+}
+
+// isPNGData 判断是否为PNG图片数据
+// 入参: data 图片数据
+// 返回: bool 是否为PNG图片数据
+func isPNGData(data []byte) bool {
+	return bytes.HasPrefix(data, []byte("\x89PNG\r\n\x1a\n"))
+}
+
 // decodeImageConfigData 解码图片尺寸
 // 入参: data 图片数据
 // 返回: image.Config 图片尺寸, string 图片格式, error 错误信息

ofdgo_object.go

@@ -19,6 +19,76 @@ import (
 	"strconv"
 )
 
+// graphicObjectTarget 图形对象集合
+type graphicObjectTarget struct {
+	objects   *[]GraphicObject
+	text      *[]TextObject
+	path      *[]PathObject
+	image     *[]ImageObject
+	composite *[]CompositeGraphicUnit
+}
+
+// decodeGraphicObject 解析图形对象
+// 入参: d XML解码器, start 起始节点, target 图形对象集合
+// 返回: bool 是否为图形对象, error 错误信息
+func decodeGraphicObject(d *xml.Decoder, start xml.StartElement, target graphicObjectTarget) (bool, error) {
+	switch start.Name.Local {
+	case "TextObject":
+		var obj TextObject
+		if err := d.DecodeElement(&obj, &start); err != nil {
+			return true, err
+		}
+		*target.text = append(*target.text, obj)
+		*target.objects = append(*target.objects, GraphicObject{Type: start.Name.Local, TextObject: obj})
+	case "PathObject":
+		var obj PathObject
+		if err := d.DecodeElement(&obj, &start); err != nil {
+			return true, err
+		}
+		*target.path = append(*target.path, obj)
+		*target.objects = append(*target.objects, GraphicObject{Type: start.Name.Local, PathObject: obj})
+	case "ImageObject":
+		var obj ImageObject
+		if err := d.DecodeElement(&obj, &start); err != nil {
+			return true, err
+		}
+		*target.image = append(*target.image, obj)
+		*target.objects = append(*target.objects, GraphicObject{Type: start.Name.Local, ImageObject: obj})
+	case "CompositeGraphicUnit", "CompositeObject":
+		var obj CompositeGraphicUnit
+		if err := d.DecodeElement(&obj, &start); err != nil {
+			return true, err
+		}
+		*target.composite = append(*target.composite, obj)
+		*target.objects = append(*target.objects, GraphicObject{Type: start.Name.Local, CompositeGraphicUnit: obj})
+	default:
+		return false, nil
+	}
+	return true, nil
+}
+
+// decodeObjectContainer 解析图形对象容器
+// 入参: d XML解码器, start 起始节点, decode 对象解码函数
+// 返回: error 错误信息
+func decodeObjectContainer(d *xml.Decoder, start xml.StartElement, decode func(*xml.Decoder, xml.StartElement) error) error {
+	for {
+		tok, err := d.Token()
+		if err != nil {
+			return err
+		}
+		switch node := tok.(type) {
+		case xml.StartElement:
+			if err := decode(d, node); err != nil {
+				return err
+			}
+		case xml.EndElement:
+			if node.Name.Local == start.Name.Local {
+				return nil
+			}
+		}
+	}
+}
+
 // UnmarshalXML 解析图层并保留对象顺序
 // 入参: d XML解码器, start 起始节点
 // 返回: error 错误信息
@@ -26,86 +96,28 @@ func (l *Layer) UnmarshalXML(d *xml.Decoder, start xml.StartElement) error {
 	*l = Layer{}
 	l.ID = attrValue(start, "ID")
 	l.DrawParam = attrValue(start, "DrawParam")
-	for {
+	return decodeObjectContainer(d, start, l.decodeObject)
-		tok, err := d.Token()
-		if err != nil {
-			return err
-		}
-		switch node := tok.(type) {
-		case xml.StartElement:
-			if err := l.decodeObject(d, node); err != nil {
-				return err
-			}
-		case xml.EndElement:
-			if node.Name.Local == start.Name.Local {
-				return nil
-			}
-		}
-	}
 }
 
 // decodeObject 解析图层子对象
 // 入参: d XML解码器, start 起始节点
 // 返回: error 错误信息
 func (l *Layer) decodeObject(d *xml.Decoder, start xml.StartElement) error {
-	switch start.Name.Local {
+	target := graphicObjectTarget{
-	case "TextObject":
+		objects:   &l.Objects,
-		var obj TextObject
+		text:      &l.TextObject,
-		if err := d.DecodeElement(&obj, &start); err != nil {
+		path:      &l.PathObject,
+		image:     &l.ImageObject,
+		composite: &l.CompositeGraphicUnit,
+	}
+	if decoded, err := decodeGraphicObject(d, start, target); decoded || err != nil {
 		return err
 	}
-		l.TextObject = append(l.TextObject, obj)
+	if start.Name.Local == "PageBlock" {
-		l.Objects = append(l.Objects, GraphicObject{Type: start.Name.Local, TextObject: obj})
+		return decodeObjectContainer(d, start, l.decodeObject)
-	case "PathObject":
-		var obj PathObject
-		if err := d.DecodeElement(&obj, &start); err != nil {
-			return err
 	}
-		l.PathObject = append(l.PathObject, obj)
-		l.Objects = append(l.Objects, GraphicObject{Type: start.Name.Local, PathObject: obj})
-	case "ImageObject":
-		var obj ImageObject
-		if err := d.DecodeElement(&obj, &start); err != nil {
-			return err
-		}
-		l.ImageObject = append(l.ImageObject, obj)
-		l.Objects = append(l.Objects, GraphicObject{Type: start.Name.Local, ImageObject: obj})
-	case "CompositeGraphicUnit", "CompositeObject":
-		var obj CompositeGraphicUnit
-		if err := d.DecodeElement(&obj, &start); err != nil {
-			return err
-		}
-		l.CompositeGraphicUnit = append(l.CompositeGraphicUnit, obj)
-		l.Objects = append(l.Objects, GraphicObject{Type: start.Name.Local, CompositeGraphicUnit: obj})
-	case "PageBlock":
-		return l.decodePageBlock(d, start)
-	default:
 	return d.Skip()
 }
-	return nil
-}
-
-// decodePageBlock 解析页块子对象
-// 入参: d XML解码器, start 起始节点
-// 返回: error 错误信息
-func (l *Layer) decodePageBlock(d *xml.Decoder, start xml.StartElement) error {
-	for {
-		tok, err := d.Token()
-		if err != nil {
-			return err
-		}
-		switch node := tok.(type) {
-		case xml.StartElement:
-			if err := l.decodeObject(d, node); err != nil {
-				return err
-			}
-		case xml.EndElement:
-			if node.Name.Local == start.Name.Local {
-				return nil
-			}
-		}
-	}
-}
 
 // UnmarshalXML 解析复合图元并保留对象顺序
 // 入参: d XML解码器, start 起始节点
@@ -128,265 +140,102 @@ func (c *CompositeGraphicUnit) UnmarshalXML(d *xml.Decoder, start xml.StartEleme
 			c.Visible = &visible
 		}
 	}
-	for {
+	return decodeObjectContainer(d, start, c.decodeObject)
-		tok, err := d.Token()
-		if err != nil {
-			return err
-		}
-		switch node := tok.(type) {
-		case xml.StartElement:
-			if err := c.decodeObject(d, node); err != nil {
-				return err
-			}
-		case xml.EndElement:
-			if node.Name.Local == start.Name.Local {
-				return nil
-			}
-		}
-	}
 }
 
 // decodeObject 解析复合图元子对象
 // 入参: d XML解码器, start 起始节点
 // 返回: error 错误信息
 func (c *CompositeGraphicUnit) decodeObject(d *xml.Decoder, start xml.StartElement) error {
+	target := graphicObjectTarget{
+		objects:   &c.Objects,
+		text:      &c.TextObject,
+		path:      &c.PathObject,
+		image:     &c.ImageObject,
+		composite: &c.CompositeGraphicUnit,
+	}
+	if decoded, err := decodeGraphicObject(d, start, target); decoded || err != nil {
+		return err
+	}
 	switch start.Name.Local {
-	case "TextObject":
-		var obj TextObject
-		if err := d.DecodeElement(&obj, &start); err != nil {
-			return err
-		}
-		c.TextObject = append(c.TextObject, obj)
-		c.Objects = append(c.Objects, GraphicObject{Type: start.Name.Local, TextObject: obj})
-	case "PathObject":
-		var obj PathObject
-		if err := d.DecodeElement(&obj, &start); err != nil {
-			return err
-		}
-		c.PathObject = append(c.PathObject, obj)
-		c.Objects = append(c.Objects, GraphicObject{Type: start.Name.Local, PathObject: obj})
-	case "ImageObject":
-		var obj ImageObject
-		if err := d.DecodeElement(&obj, &start); err != nil {
-			return err
-		}
-		c.ImageObject = append(c.ImageObject, obj)
-		c.Objects = append(c.Objects, GraphicObject{Type: start.Name.Local, ImageObject: obj})
-	case "CompositeGraphicUnit", "CompositeObject":
-		var obj CompositeGraphicUnit
-		if err := d.DecodeElement(&obj, &start); err != nil {
-			return err
-		}
-		c.CompositeGraphicUnit = append(c.CompositeGraphicUnit, obj)
-		c.Objects = append(c.Objects, GraphicObject{Type: start.Name.Local, CompositeGraphicUnit: obj})
 	case "Clips":
 		var clips Clips
 		if err := d.DecodeElement(&clips, &start); err != nil {
 			return err
 		}
 		c.Clips = &clips
+	case "Actions":
+		var actions struct {
+			Action []Action `xml:"Action"`
+		}
+		if err := d.DecodeElement(&actions, &start); err != nil {
+			return err
+		}
+		c.Actions = actions.Action
 	case "Content", "PageBlock":
-		return c.decodePageBlock(d, start)
+		return decodeObjectContainer(d, start, c.decodeObject)
 	default:
 		return d.Skip()
 	}
 	return nil
 }
 
-// decodePageBlock 解析页块子对象
-// 入参: d XML解码器, start 起始节点
-// 返回: error 错误信息
-func (c *CompositeGraphicUnit) decodePageBlock(d *xml.Decoder, start xml.StartElement) error {
-	for {
-		tok, err := d.Token()
-		if err != nil {
-			return err
-		}
-		switch node := tok.(type) {
-		case xml.StartElement:
-			if err := c.decodeObject(d, node); err != nil {
-				return err
-			}
-		case xml.EndElement:
-			if node.Name.Local == start.Name.Local {
-				return nil
-			}
-		}
-	}
-}
-
 // UnmarshalXML 解析注释外观并保留对象顺序
 // 入参: d XML解码器, start 起始节点
 // 返回: error 错误信息
 func (a *Appearance) UnmarshalXML(d *xml.Decoder, start xml.StartElement) error {
 	*a = Appearance{}
 	a.Boundary = attrValue(start, "Boundary")
-	for {
+	return decodeObjectContainer(d, start, a.decodeObject)
-		tok, err := d.Token()
-		if err != nil {
-			return err
-		}
-		switch node := tok.(type) {
-		case xml.StartElement:
-			if err := a.decodeObject(d, node); err != nil {
-				return err
-			}
-		case xml.EndElement:
-			if node.Name.Local == start.Name.Local {
-				return nil
-			}
-		}
-	}
 }
 
 // decodeObject 解析注释外观子对象
 // 入参: d XML解码器, start 起始节点
 // 返回: error 错误信息
 func (a *Appearance) decodeObject(d *xml.Decoder, start xml.StartElement) error {
-	switch start.Name.Local {
+	target := graphicObjectTarget{
-	case "TextObject":
+		objects:   &a.Objects,
-		var obj TextObject
+		text:      &a.TextObject,
-		if err := d.DecodeElement(&obj, &start); err != nil {
+		path:      &a.PathObject,
+		image:     &a.ImageObject,
+		composite: &a.CompositeGraphicUnit,
+	}
+	if decoded, err := decodeGraphicObject(d, start, target); decoded || err != nil {
 		return err
 	}
-		a.TextObject = append(a.TextObject, obj)
+	if start.Name.Local == "PageBlock" {
-		a.Objects = append(a.Objects, GraphicObject{Type: start.Name.Local, TextObject: obj})
+		return decodeObjectContainer(d, start, a.decodeObject)
-	case "PathObject":
-		var obj PathObject
-		if err := d.DecodeElement(&obj, &start); err != nil {
-			return err
 	}
-		a.PathObject = append(a.PathObject, obj)
-		a.Objects = append(a.Objects, GraphicObject{Type: start.Name.Local, PathObject: obj})
-	case "ImageObject":
-		var obj ImageObject
-		if err := d.DecodeElement(&obj, &start); err != nil {
-			return err
-		}
-		a.ImageObject = append(a.ImageObject, obj)
-		a.Objects = append(a.Objects, GraphicObject{Type: start.Name.Local, ImageObject: obj})
-	case "CompositeGraphicUnit", "CompositeObject":
-		var obj CompositeGraphicUnit
-		if err := d.DecodeElement(&obj, &start); err != nil {
-			return err
-		}
-		a.CompositeGraphicUnit = append(a.CompositeGraphicUnit, obj)
-		a.Objects = append(a.Objects, GraphicObject{Type: start.Name.Local, CompositeGraphicUnit: obj})
-	case "PageBlock":
-		return a.decodePageBlock(d, start)
-	default:
 	return d.Skip()
 }
-	return nil
-}
-
-// decodePageBlock 解析注释外观页块子对象
-// 入参: d XML解码器, start 起始节点
-// 返回: error 错误信息
-func (a *Appearance) decodePageBlock(d *xml.Decoder, start xml.StartElement) error {
-	for {
-		tok, err := d.Token()
-		if err != nil {
-			return err
-		}
-		switch node := tok.(type) {
-		case xml.StartElement:
-			if err := a.decodeObject(d, node); err != nil {
-				return err
-			}
-		case xml.EndElement:
-			if node.Name.Local == start.Name.Local {
-				return nil
-			}
-		}
-	}
-}
 
 // UnmarshalXML 解析图案单元内容并保留对象顺序
 // 入参: d XML解码器, start 起始节点
 // 返回: error 错误信息
 func (p *PatternContent) UnmarshalXML(d *xml.Decoder, start xml.StartElement) error {
 	*p = PatternContent{}
-	for {
+	return decodeObjectContainer(d, start, p.decodeObject)
-		tok, err := d.Token()
-		if err != nil {
-			return err
-		}
-		switch node := tok.(type) {
-		case xml.StartElement:
-			if err := p.decodeObject(d, node); err != nil {
-				return err
-			}
-		case xml.EndElement:
-			if node.Name.Local == start.Name.Local {
-				return nil
-			}
-		}
-	}
 }
 
 // decodeObject 解析图案单元内容子对象
 // 入参: d XML解码器, start 起始节点
 // 返回: error 错误信息
 func (p *PatternContent) decodeObject(d *xml.Decoder, start xml.StartElement) error {
-	switch start.Name.Local {
+	target := graphicObjectTarget{
-	case "TextObject":
+		objects:   &p.Objects,
-		var obj TextObject
+		text:      &p.TextObject,
-		if err := d.DecodeElement(&obj, &start); err != nil {
+		path:      &p.PathObject,
+		image:     &p.ImageObject,
+		composite: &p.CompositeGraphicUnit,
+	}
+	if decoded, err := decodeGraphicObject(d, start, target); decoded || err != nil {
 		return err
 	}
-		p.TextObject = append(p.TextObject, obj)
+	if start.Name.Local == "PageBlock" {
-		p.Objects = append(p.Objects, GraphicObject{Type: start.Name.Local, TextObject: obj})
+		return decodeObjectContainer(d, start, p.decodeObject)
-	case "PathObject":
-		var obj PathObject
-		if err := d.DecodeElement(&obj, &start); err != nil {
-			return err
 	}
-		p.PathObject = append(p.PathObject, obj)
-		p.Objects = append(p.Objects, GraphicObject{Type: start.Name.Local, PathObject: obj})
-	case "ImageObject":
-		var obj ImageObject
-		if err := d.DecodeElement(&obj, &start); err != nil {
-			return err
-		}
-		p.ImageObject = append(p.ImageObject, obj)
-		p.Objects = append(p.Objects, GraphicObject{Type: start.Name.Local, ImageObject: obj})
-	case "CompositeGraphicUnit", "CompositeObject":
-		var obj CompositeGraphicUnit
-		if err := d.DecodeElement(&obj, &start); err != nil {
-			return err
-		}
-		p.CompositeGraphicUnit = append(p.CompositeGraphicUnit, obj)
-		p.Objects = append(p.Objects, GraphicObject{Type: start.Name.Local, CompositeGraphicUnit: obj})
-	case "PageBlock":
-		return p.decodePageBlock(d, start)
-	default:
 	return d.Skip()
 }
-	return nil
-}
-
-// decodePageBlock 解析图案单元内容页块子对象
-// 入参: d XML解码器, start 起始节点
-// 返回: error 错误信息
-func (p *PatternContent) decodePageBlock(d *xml.Decoder, start xml.StartElement) error {
-	for {
-		tok, err := d.Token()
-		if err != nil {
-			return err
-		}
-		switch node := tok.(type) {
-		case xml.StartElement:
-			if err := p.decodeObject(d, node); err != nil {
-				return err
-			}
-		case xml.EndElement:
-			if node.Name.Local == start.Name.Local {
-				return nil
-			}
-		}
-	}
-}
 
 // attrValue 获取XML属性值
 // 入参: start 起始节点, name 属性名

ofdgo_page.go

@@ -23,6 +23,7 @@ type PageContent struct {
 	Area     PageArea   `xml:"Area"`
 	Template []Template `xml:"Template"`
 	Content  Content    `xml:"Content"`
+	Actions  []Action   `xml:"Actions>Action"`
 }
 
 // Template 页面模板引用
@@ -58,7 +59,7 @@ type GraphicObject struct {
 
 // Clips 裁剪区域集合
 type Clips struct {
-	TransFlag bool   `xml:"TransFlag,attr"`
+	TransFlag *bool  `xml:"TransFlag,attr"`
 	Clip      []Clip `xml:"Clip"`
 }
 
@@ -97,6 +98,7 @@ type TextObject struct {
 	CGTransform []CGTransform `xml:"CGTransform"`
 	TextCode    []TextCode    `xml:"TextCode"`
 	Clips       *Clips        `xml:"Clips"`
+	Actions     []Action      `xml:"Actions>Action"`
 }
 
 // FillColor 填充颜色
@@ -165,6 +167,7 @@ type PathObject struct {
 	FillColor       *FillColor   `xml:"FillColor"`
 	AbbreviatedData string       `xml:"AbbreviatedData"`
 	Clips           *Clips       `xml:"Clips"`
+	Actions         []Action     `xml:"Actions>Action"`
 }
 
 // StrokeColor 勾边颜色
@@ -210,8 +213,10 @@ type ImageObject struct {
 	ID         string   `xml:"ID,attr"`
 	Boundary   string   `xml:"Boundary,attr"`
 	ResourceID string   `xml:"ResourceID,attr"`
+	ImageMask  string   `xml:"ImageMask,attr"`
 	CTM        string   `xml:"CTM,attr"`
 	Alpha      *int     `xml:"Alpha,attr"`
 	Visible    *bool    `xml:"Visible,attr"`
 	Clips      *Clips   `xml:"Clips"`
+	Actions    []Action `xml:"Actions>Action"`
 }

ofdgo_paint.go

@@ -142,10 +142,10 @@ func parseFillColor(fillColor *FillColor) color.Color {
 		return nil
 	}
 	if fillColor.AxialShd != nil {
-		return parseAxialShdColor(fillColor.AxialShd, fillColor.Alpha)
+		return parseShdColor(fillColor.AxialShd.Segment, fillColor.Alpha)
 	}
 	if fillColor.RadialShd != nil {
-		return parseRadialShdColor(fillColor.RadialShd, fillColor.Alpha)
+		return parseShdColor(fillColor.RadialShd.Segment, fillColor.Alpha)
 	}
 	if strings.TrimSpace(fillColor.Value) != "" {
 		return parseColorWithAlpha(fillColor.Value, fillColor.Alpha)
@@ -170,10 +170,10 @@ func parseFillPaint(fillColor *FillColor, x, y, pageH, originX, originY float64)
 		return gradient
 	}
 	if fillColor.AxialShd != nil {
-		return parseAxialShdColor(fillColor.AxialShd, fillColor.Alpha)
+		return parseShdColor(fillColor.AxialShd.Segment, fillColor.Alpha)
 	}
 	if fillColor.RadialShd != nil {
-		return parseRadialShdColor(fillColor.RadialShd, fillColor.Alpha)
+		return parseShdColor(fillColor.RadialShd.Segment, fillColor.Alpha)
 	}
 	if strings.TrimSpace(fillColor.Value) != "" {
 		return parseColorWithAlpha(fillColor.Value, fillColor.Alpha)
@@ -189,10 +189,10 @@ func parseStrokeColor(strokeColor *StrokeColor) color.Color {
 		return nil
 	}
 	if strokeColor.AxialShd != nil {
-		return parseAxialShdColor(strokeColor.AxialShd, strokeColor.Alpha)
+		return parseShdColor(strokeColor.AxialShd.Segment, strokeColor.Alpha)
 	}
 	if strokeColor.RadialShd != nil {
-		return parseRadialShdColor(strokeColor.RadialShd, strokeColor.Alpha)
+		return parseShdColor(strokeColor.RadialShd.Segment, strokeColor.Alpha)
 	}
 	if strings.TrimSpace(strokeColor.Value) != "" {
 		return parseColorWithAlpha(strokeColor.Value, strokeColor.Alpha)
@@ -214,10 +214,10 @@ func parseStrokePaint(strokeColor *StrokeColor, x, y, pageH, originX, originY fl
 		return gradient
 	}
 	if strokeColor.AxialShd != nil {
-		return parseAxialShdColor(strokeColor.AxialShd, strokeColor.Alpha)
+		return parseShdColor(strokeColor.AxialShd.Segment, strokeColor.Alpha)
 	}
 	if strokeColor.RadialShd != nil {
-		return parseRadialShdColor(strokeColor.RadialShd, strokeColor.Alpha)
+		return parseShdColor(strokeColor.RadialShd.Segment, strokeColor.Alpha)
 	}
 	if strings.TrimSpace(strokeColor.Value) != "" {
 		return parseColorWithAlpha(strokeColor.Value, strokeColor.Alpha)
@@ -235,24 +235,44 @@ func patternColor(fillColor *FillColor) color.Color {
 	return parseColorWithAlpha(fillColor.Value, fillColor.Alpha)
 }
 
-// parseAxialShdColor 解析轴向渐变颜色
+// parseShdColor 解析渐变颜色
-// 入参: axialShd 轴向渐变节点, alpha 透明度
+// 入参: segments 渐变分段, alpha 透明度
 // 返回: color.Color 颜色对象
-func parseAxialShdColor(axialShd *AxialShd, alpha *int) color.Color {
+func parseShdColor(segments []ShdSegment, alpha *int) color.Color {
-	if axialShd != nil {
+	for _, segment := range segments {
-		for _, segment := range axialShd.Segment {
 		if strings.TrimSpace(segment.Color.Value) == "" {
 			continue
 		}
-			if alpha == nil {
+		segmentAlpha := alpha
-				alpha = segment.Color.Alpha
+		if segmentAlpha == nil {
-			}
+			segmentAlpha = segment.Color.Alpha
-			return parseColorWithAlpha(segment.Color.Value, alpha)
 		}
+		return parseColorWithAlpha(segment.Color.Value, segmentAlpha)
 	}
 	return color.Black
 }
 
+// parseShdSegments 解析渐变分段
+// 入参: segments 渐变分段, alpha 透明度
+// 返回: canvas.Grad 渐变分段
+func parseShdSegments(segments []ShdSegment, alpha *int) canvas.Grad {
+	gradient := canvas.NewGradient()
+	for _, segment := range segments {
+		if strings.TrimSpace(segment.Color.Value) == "" {
+			continue
+		}
+		segmentAlpha := alpha
+		if segmentAlpha == nil {
+			segmentAlpha = segment.Color.Alpha
+		}
+		gradient.Add(segment.Position, colorToRGBA(parseColorWithAlpha(segment.Color.Value, segmentAlpha)))
+	}
+	if len(gradient) == 0 {
+		return nil
+	}
+	return gradient
+}
+
 // parseAxialShdGradient 解析轴向渐变
 // 入参: axialShd 轴向渐变节点, alpha 透明度, x X坐标, y Y坐标, pageH 页面高度, originX 原点X坐标, originY 原点Y坐标
 // 返回: canvas.Gradient 渐变对象
@@ -265,18 +285,8 @@ func parseAxialShdGradient(axialShd *AxialShd, alpha *int, x, y, pageH, originX,
 	if len(start) < 2 || len(end) < 2 {
 		return nil
 	}
-	grad := canvas.NewGradient()
+	gradient := parseShdSegments(axialShd.Segment, alpha)
-	for _, segment := range axialShd.Segment {
+	if gradient == nil {
-		if strings.TrimSpace(segment.Color.Value) == "" {
-			continue
-		}
-		segmentAlpha := alpha
-		if segmentAlpha == nil {
-			segmentAlpha = segment.Color.Alpha
-		}
-		grad.Add(segment.Position, colorToRGBA(parseColorWithAlpha(segment.Color.Value, segmentAlpha)))
-	}
-	if len(grad) == 0 {
 		return nil
 	}
 	startPoint := canvas.Point{X: x + start[0] - originX, Y: pageH - (y + start[1]) - originY}
@@ -284,25 +294,7 @@ func parseAxialShdGradient(axialShd *AxialShd, alpha *int, x, y, pageH, originX,
 	if startPoint.Equals(endPoint) {
 		return nil
 	}
-	return grad.ToLinear(startPoint, endPoint)
+	return gradient.ToLinear(startPoint, endPoint)
-}
-
-// parseRadialShdColor 解析径向渐变颜色
-// 入参: radialShd 径向渐变节点, alpha 透明度
-// 返回: color.Color 颜色对象
-func parseRadialShdColor(radialShd *RadialShd, alpha *int) color.Color {
-	if radialShd != nil {
-		for _, segment := range radialShd.Segment {
-			if strings.TrimSpace(segment.Color.Value) == "" {
-				continue
-			}
-			if alpha == nil {
-				alpha = segment.Color.Alpha
-			}
-			return parseColorWithAlpha(segment.Color.Value, alpha)
-		}
-	}
-	return color.Black
 }
 
 // parseRadialShdGradient 解析径向渐变
@@ -317,23 +309,13 @@ func parseRadialShdGradient(radialShd *RadialShd, alpha *int, x, y, pageH, origi
 	if len(start) < 2 || len(end) < 2 {
 		return nil
 	}
-	grad := canvas.NewGradient()
+	gradient := parseShdSegments(radialShd.Segment, alpha)
-	for _, segment := range radialShd.Segment {
+	if gradient == nil {
-		if strings.TrimSpace(segment.Color.Value) == "" {
-			continue
-		}
-		segmentAlpha := alpha
-		if segmentAlpha == nil {
-			segmentAlpha = segment.Color.Alpha
-		}
-		grad.Add(segment.Position, colorToRGBA(parseColorWithAlpha(segment.Color.Value, segmentAlpha)))
-	}
-	if len(grad) == 0 {
 		return nil
 	}
 	startPoint := canvas.Point{X: x + start[0] - originX, Y: pageH - (y + start[1]) - originY}
 	endPoint := canvas.Point{X: x + end[0] - originX, Y: pageH - (y + end[1]) - originY}
-	return grad.ToRadial(startPoint, radialShd.StartRadius, endPoint, radialShd.EndRadius)
+	return gradient.ToRadial(startPoint, radialShd.StartRadius, endPoint, radialShd.EndRadius)
 }
 
 // colorToRGBA 转换颜色对象

ofdgo_reader.go

@@ -176,7 +176,7 @@ func (r *Reader) loadRes(resPath string) {
 	if resPath == "" {
 		return
 	}
-	fullPath := path.Join(r.RootDir, resPath)
+	fullPath := r.ResPath(resPath)
 	data, err := r.readFile(fullPath)
 	if err != nil {
 		return
@@ -235,7 +235,7 @@ func resolveResourcePath(resPath, baseLoc, filePath string) string {
 // 入参: page 页面对象
 // 返回: *PageContent 页面内容, error 错误信息
 func (r *Reader) PageContent(page Page) (*PageContent, error) {
-	fullPath := path.Join(r.RootDir, page.BaseLoc)
+	fullPath := r.ResPath(page.BaseLoc)
 	data, err := r.readFile(fullPath)
 	if err != nil {
 		return nil, err
@@ -260,7 +260,9 @@ func (r *Reader) ResPath(resLink string) string {
 	if resLink == "" {
 		return ""
 	}
-	resLink = strings.TrimPrefix(resLink, "/")
+	if strings.HasPrefix(resLink, "/") {
+		return cleanPackagePath(resLink)
+	}
 	resLink = path.Clean(resLink)
 	rootDir := strings.TrimPrefix(strings.ReplaceAll(r.RootDir, "\\", "/"), "/")
 	if rootDir != "" && (resLink == rootDir || strings.HasPrefix(resLink, rootDir+"/")) {
@@ -277,6 +279,21 @@ func (r *Reader) ResData(resLink string) ([]byte, error) {
 	return r.readFile(fullPath)
 }
 
+// readDocumentPart 读取文档关联文件
+// 入参: loc 文件位置, value 文档结构
+// 返回: string 文件路径, error 错误信息
+func (r *Reader) readDocumentPart(loc string, value any) (string, error) {
+	fullPath := r.ResPath(strings.TrimSpace(loc))
+	data, err := r.readFile(fullPath)
+	if err != nil {
+		return "", err
+	}
+	if err := xml.Unmarshal(data, value); err != nil {
+		return "", fmt.Errorf("failed to unmarshal %s: %w", path.Base(fullPath), err)
+	}
+	return fullPath, nil
+}
+
 // Version 获取OFD版本号
 // 返回: string 版本号
 func (r *Reader) Version() string {
@@ -324,6 +341,26 @@ func (r *Reader) Outlines() ([]OutlineElem, error) {
 	return doc.Outlines.OutlineElem, nil
 }
 
+// Actions 获取文档动作
+// 返回: []Action 动作列表, error 错误信息
+func (r *Reader) Actions() ([]Action, error) {
+	doc, err := r.Doc()
+	if err != nil {
+		return nil, err
+	}
+	return doc.Actions, nil
+}
+
+// Bookmarks 获取文档书签
+// 返回: []Bookmark 书签列表, error 错误信息
+func (r *Reader) Bookmarks() ([]Bookmark, error) {
+	doc, err := r.Doc()
+	if err != nil {
+		return nil, err
+	}
+	return doc.Bookmarks.Bookmark, nil
+}
+
 // Attachments 获取附件列表
 // 返回: []Attachment 附件列表, error 错误信息
 func (r *Reader) Attachments() ([]Attachment, error) {
@@ -331,9 +368,50 @@ func (r *Reader) Attachments() ([]Attachment, error) {
 	if err != nil {
 		return nil, err
 	}
+	if strings.TrimSpace(doc.Attachments.Path) != "" && doc.Attachments.Attachment == nil {
+		var attachments Attachments
+		partPath, err := r.readDocumentPart(doc.Attachments.Path, &attachments)
+		if err != nil {
+			return nil, err
+		}
+		for i := range attachments.Attachment {
+			attachment := &attachments.Attachment[i]
+			attachment.FileLoc = resolveResourcePath(partPath, "", attachment.FileLoc)
+		}
+		if attachments.Attachment == nil {
+			attachments.Attachment = []Attachment{}
+		}
+		doc.Attachments.Attachment = attachments.Attachment
+	}
 	return doc.Attachments.Attachment, nil
 }
 
+// CustomTags 获取自定义标引
+// 返回: []CustomTag 自定义标引列表, error 错误信息
+func (r *Reader) CustomTags() ([]CustomTag, error) {
+	doc, err := r.Doc()
+	if err != nil {
+		return nil, err
+	}
+	if strings.TrimSpace(doc.CustomTags.Path) != "" && doc.CustomTags.CustomTag == nil {
+		var customTags CustomTags
+		partPath, err := r.readDocumentPart(doc.CustomTags.Path, &customTags)
+		if err != nil {
+			return nil, err
+		}
+		for i := range customTags.CustomTag {
+			tag := &customTags.CustomTag[i]
+			tag.SchemaLoc = resolveResourcePath(partPath, "", tag.SchemaLoc)
+			tag.FileLoc = resolveResourcePath(partPath, "", tag.FileLoc)
+		}
+		if customTags.CustomTag == nil {
+			customTags.CustomTag = []CustomTag{}
+		}
+		doc.CustomTags.CustomTag = customTags.CustomTag
+	}
+	return doc.CustomTags.CustomTag, nil
+}
+
 // CustomDatas 获取自定义数据
 // 返回: []CustomData 自定义数据列表, error 错误信息
 func (r *Reader) CustomDatas() ([]CustomData, error) {
@@ -347,12 +425,29 @@ func (r *Reader) CustomDatas() ([]CustomData, error) {
 	return info.CustomDatas.CustomData, nil
 }
 
-// Extensions 获取分列扩展项
+// Extensions 获取扩展项
 // 返回: []Extension 扩展项列表, error 错误信息
 func (r *Reader) Extensions() ([]Extension, error) {
 	doc, err := r.Doc()
 	if err != nil {
 		return nil, err
 	}
+	if strings.TrimSpace(doc.Extensions.Path) != "" && doc.Extensions.Extension == nil {
+		var extensions Extensions
+		partPath, err := r.readDocumentPart(doc.Extensions.Path, &extensions)
+		if err != nil {
+			return nil, err
+		}
+		for i := range extensions.Extension {
+			extension := &extensions.Extension[i]
+			for j := range extension.ExtendData {
+				extension.ExtendData[j] = resolveResourcePath(partPath, "", extension.ExtendData[j])
+			}
+		}
+		if extensions.Extension == nil {
+			extensions.Extension = []Extension{}
+		}
+		doc.Extensions.Extension = extensions.Extension
+	}
 	return doc.Extensions.Extension, nil
 }

ofdgo_renderer.go

@@ -33,8 +33,15 @@ type Renderer struct {
 	FontMap               map[string]*canvas.FontFamily
 	FontGIDMap            map[string]map[uint16]rune
 	FontCIDMap            map[string]map[uint16]rune
+	fontCache             map[fontCacheKey]*canvas.FontFamily
+	fontSourceCache       map[string][]fontSource
+	fontSourceUsed        map[string]fontSource
+	fontDirCandidates     map[string][]fontFileCandidate
+	textGlyphPathCache    map[textGlyphPathCacheKey]textGlyphPathCacheValue
+	templatePageCache     map[string]*PageContent
 	fontDirs              []string
 	fontFS                []fs.FS
+	decodeImages          bool
 }
 
 // RendererOption 渲染器配置选项
@@ -44,6 +51,15 @@ type RendererOption func(*Renderer)
 // 入参: page 页面内容
 // 返回: *canvas.Canvas 画布实例, error 错误信息
 func (r *Renderer) RenderPage(page *PageContent) (*canvas.Canvas, error) {
+	renderer := *r
+	renderer.decodeImages = true
+	return renderer.renderPage(page)
+}
+
+// renderPage 渲染特定页面内容
+// 入参: page 页面内容
+// 返回: *canvas.Canvas 画布实例, error 错误信息
+func (r *Renderer) renderPage(page *PageContent) (*canvas.Canvas, error) {
 	box, err := r.GetPageBox(page)
 	if err != nil {
 		return nil, err
@@ -51,7 +67,7 @@ func (r *Renderer) RenderPage(page *PageContent) (*canvas.Canvas, error) {
 	width, height := box.W, box.H
 	c := canvas.New(width, height)
 	ctx := canvas.NewContext(c)
-	if err := r.RenderPageToContext(ctx, page); err != nil {
+	if err := r.renderPageToContext(ctx, page, true); err != nil {
 		return nil, err
 	}
 	return c, nil
@@ -81,7 +97,9 @@ func (r *Renderer) GetPageBox(page *PageContent) (Box, error) {
 // 入参: ctx 画布上下文, page 页面内容
 // 返回: error 错误信息
 func (r *Renderer) RenderPageToContext(ctx *canvas.Context, page *PageContent) error {
-	return r.renderPageToContext(ctx, page, true)
+	renderer := *r
+	renderer.decodeImages = true
+	return renderer.renderPageToContext(ctx, page, true)
 }
 
 // renderPageToContext 渲染页面到指定上下文
@@ -165,5 +183,7 @@ func (r *Renderer) childRenderer(reader *Reader) *Renderer {
 	if len(r.fontFS) > 0 {
 		opts = append(opts, WithFontFS(r.fontFS...))
 	}
-	return NewRenderer(reader, opts...)
+	renderer := NewRenderer(reader, opts...)
+	renderer.decodeImages = r.decodeImages
+	return renderer
 }

ofdgo_renderer_image.go

@@ -15,15 +15,20 @@
 package ofdgo
 
 import (
+	"bufio"
 	"image"
 	"image/color"
+	"io"
 
 	"github.com/tdewolff/canvas"
+	canvasimage "github.com/tdewolff/canvas/image"
+	"github.com/tdewolff/canvas/renderers/rasterizer"
+	"golang.org/x/image/draw"
 )
 
 // renderImage 渲染图片
-// 入参: ctx 画布上下文, obj 图片对象, pageH 页面高度, parentCTM 父级CTM, boundaryInCTM 边界是否参与父级CTM
+// 入参: ctx 画布上下文, obj 图片对象, pageH 页面高度, parentCTM 父级CTM, boundaryInCTM 边界是否参与父级CTM, parentClip 父级裁剪路径
-func (r *Renderer) renderImage(ctx *canvas.Context, obj ImageObject, pageH float64, parentCTM *Matrix, boundaryInCTM bool) {
+func (r *Renderer) renderImage(ctx *canvas.Context, obj ImageObject, pageH float64, parentCTM *Matrix, boundaryInCTM bool, parentClip *canvas.Path) {
 	if obj.Visible != nil && !*obj.Visible {
 		return
 	}
@@ -31,27 +36,30 @@ func (r *Renderer) renderImage(ctx *canvas.Context, obj ImageObject, pageH float
 	if !ok {
 		return
 	}
-	imgData, err := r.Reader.ResData(resPath)
+	img, err := r.decodeImageResource(resPath)
-	if err != nil {
-		return
-	}
-	img, _, err := decodeImageData(imgData)
 	if err != nil {
 		return
 	}
 	box, _ := ParseBox(obj.Boundary)
+	if maskPath, ok := r.Reader.ResMap[obj.ImageMask]; ok {
+		if mask, err := r.decodeImageResource(maskPath); err == nil {
+			img = imageWithMask(img, mask)
+		}
+	}
+	img = imageWithAlpha(img, obj.Alpha)
 	imgBounds := img.Bounds()
 	imgW, imgH := float64(imgBounds.Dx()), float64(imgBounds.Dy())
 	if imgW <= 0 || imgH <= 0 {
 		return
 	}
-	img = imageWithAlpha(img, obj.Alpha)
-	pad := 0
-	img, pad = imageWithTransparentEdge(img)
 	ctm := NewMatrix(obj.CTM)
 	if obj.CTM == "" {
 		ctm = Matrix{a: box.W, d: box.H}
 	}
+	objectCTM := ctm
+	if parentCTM != nil {
+		objectCTM = parentCTM.Multiply(ctm)
+	}
 	var m canvas.Matrix
 	if boundaryInCTM && parentCTM != nil {
 		x0 := box.X + ctm.c + ctm.e
@@ -69,6 +77,9 @@ func (r *Renderer) renderImage(ctx *canvas.Context, obj ImageObject, pageH float
 			{-ctm.b / imgW, ctm.d / imgH, pageH - box.Y - ctm.d - ctm.f},
 		}
 	}
+	clipPath := intersectClipPath(parentClip, r.buildClipPath(obj.Clips, pageH, box.X, box.Y, objectCTM))
+	img = imageWithClip(img, clipPath, m)
+	img, pad := imageWithTransparentEdge(img)
 	if pad > 0 {
 		p := float64(pad)
 		m[0][2] -= m[0][0]*p + m[0][1]*p
@@ -77,6 +88,141 @@ func (r *Renderer) renderImage(ctx *canvas.Context, obj ImageObject, pageH float
 	ctx.RenderImage(img, ctx.CoordSystemView().Mul(ctx.View()).Mul(m))
 }
 
+// imageWithMask 应用图片蒙版
+// 入参: img 图片对象, mask 蒙版图片
+// 返回: image.Image 蒙版处理后的图片对象
+func imageWithMask(img, mask image.Image) image.Image {
+	if img == nil || mask == nil {
+		return img
+	}
+	bounds := img.Bounds()
+	if bounds.Empty() || mask.Bounds().Empty() {
+		return img
+	}
+	source := imagePixelSource(img)
+	maskSource := imagePixelSource(mask)
+	maskBounds := maskSource.Bounds()
+	var opacity image.Image = maskSource
+	if bounds.Size() != maskBounds.Size() {
+		resized := image.NewGray(bounds)
+		draw.CatmullRom.Scale(resized, bounds, maskSource, maskBounds, draw.Src, nil)
+		opacity = resized
+		maskBounds = bounds
+	}
+	out := image.NewNRGBA(bounds)
+	for y := bounds.Min.Y; y < bounds.Max.Y; y++ {
+		for x := bounds.Min.X; x < bounds.Max.X; x++ {
+			mx := maskBounds.Min.X + x - bounds.Min.X
+			my := maskBounds.Min.Y + y - bounds.Min.Y
+			a := color.GrayModel.Convert(opacity.At(mx, my)).(color.Gray).Y
+			c := imageNRGBAAt(source, x, y)
+			c.A = uint8(int(c.A) * int(a) / 255)
+			out.SetNRGBA(x, y, c)
+		}
+	}
+	return out
+}
+
+// imageWithClip 应用图片裁剪区域
+// 入参: img 图片对象, clipPath 裁剪路径, m 图片变换矩阵
+// 返回: image.Image 裁剪后的图片对象
+func imageWithClip(img image.Image, clipPath *canvas.Path, m canvas.Matrix) image.Image {
+	if img == nil || clipPath == nil || m.Det() == 0 {
+		return img
+	}
+	bounds := img.Bounds()
+	w, h := bounds.Dx(), bounds.Dy()
+	if w == 0 || h == 0 {
+		return img
+	}
+	p0 := m.Dot(canvas.Point{})
+	p1 := m.Dot(canvas.Point{X: float64(w)})
+	p2 := m.Dot(canvas.Point{X: float64(w), Y: float64(h)})
+	p3 := m.Dot(canvas.Point{Y: float64(h)})
+	imagePath := &canvas.Path{}
+	imagePath.MoveTo(p0.X, p0.Y)
+	imagePath.LineTo(p1.X, p1.Y)
+	imagePath.LineTo(p2.X, p2.Y)
+	imagePath.LineTo(p3.X, p3.Y)
+	imagePath.Close()
+	if rect, ok := rectangularPath(clipPath); ok {
+		if rect.Contains(imagePath.FastBounds()) {
+			return img
+		}
+	} else if clipPath.Contains(imagePath) {
+		return img
+	}
+	clip := clipPath.Copy().Transform(m.Inv())
+	clipCanvas := canvas.New(float64(w), float64(h))
+	ctx := canvas.NewContext(clipCanvas)
+	ctx.SetFillColor(canvas.White)
+	ctx.SetStrokeColor(canvas.Transparent)
+	ctx.DrawPath(0, 0, clip)
+	mask := rasterizer.Draw(clipCanvas, canvas.DPMM(1), canvas.DefaultColorSpace)
+	opaque := true
+	for y := 0; y < h && opaque; y++ {
+		for x := 0; x < w; x++ {
+			if mask.RGBAAt(x, y).A != 255 {
+				opaque = false
+				break
+			}
+		}
+	}
+	if opaque {
+		return img
+	}
+	source := imagePixelSource(img)
+	out := image.NewNRGBA(bounds)
+	for y := bounds.Min.Y; y < bounds.Max.Y; y++ {
+		for x := bounds.Min.X; x < bounds.Max.X; x++ {
+			c := imageNRGBAAt(source, x, y)
+			a := mask.RGBAAt(x-bounds.Min.X, y-bounds.Min.Y).A
+			c.A = uint8(int(c.A) * int(a) / 255)
+			out.SetNRGBA(x, y, c)
+		}
+	}
+	return out
+}
+
+// decodeImageResource 解码图片资源
+// 入参: resPath 图片资源路径
+// 返回: image.Image 图片对象, error 错误信息
+func (r *Renderer) decodeImageResource(resPath string) (image.Image, error) {
+	rc, err := r.Reader.openFile(r.Reader.ResPath(resPath))
+	if err != nil {
+		return nil, err
+	}
+	defer rc.Close()
+	reader := bufio.NewReaderSize(rc, 8)
+	header, _ := reader.Peek(8)
+	if isJPEGData(header) {
+		img, err := canvasimage.NewJPEGImage(reader)
+		if err != nil {
+			return nil, err
+		}
+		if r.decodeImages {
+			return img.Image()
+		}
+		return img, nil
+	}
+	if isPNGData(header) {
+		img, err := canvasimage.NewPNGImage(reader)
+		if err != nil {
+			return nil, err
+		}
+		if r.decodeImages {
+			return img.Image()
+		}
+		return img, nil
+	}
+	data, err := io.ReadAll(reader)
+	if err != nil {
+		return nil, err
+	}
+	img, _, err := decodeImageData(data)
+	return img, err
+}
+
 // imageWithAlpha 合并图片透明度
 // 入参: img 图片对象, alpha 对象透明度
 // 返回: image.Image 合并后的图片对象
@@ -90,9 +236,10 @@ func imageWithAlpha(img image.Image, alpha *int) image.Image {
 	}
 	bounds := img.Bounds()
 	out := image.NewNRGBA(bounds)
+	source := imagePixelSource(img)
 	for y := bounds.Min.Y; y < bounds.Max.Y; y++ {
 		for x := bounds.Min.X; x < bounds.Max.X; x++ {
-			c := color.NRGBAModel.Convert(img.At(x, y)).(color.NRGBA)
+			c := imageNRGBAAt(source, x, y)
 			c.A = uint8(int(c.A) * a / 255)
 			out.SetNRGBA(x, y, c)
 		}
@@ -112,14 +259,33 @@ func imageWithTransparentEdge(img image.Image) (image.Image, int) {
 	if w == 0 || h == 0 {
 		return img, 0
 	}
-	if opaque, ok := img.(interface{ Opaque() bool }); ok && opaque.Opaque() {
+	if src, ok := img.(*canvasimage.Image); ok && src.Mimetype == "image/jpeg" && src.Mask == nil {
+		return img, 0
+	}
+	source := imagePixelSource(img)
+	if opaque, ok := source.(interface{ Opaque() bool }); ok && opaque.Opaque() {
 		return img, 0
 	}
-	src := image.NewNRGBA(image.Rect(0, 0, w, h))
 	hasZero, hasVisible := false, false
+	src, ok := source.(*image.NRGBA)
+	if ok {
+		srcBounds := src.Bounds()
+		for y := srcBounds.Min.Y; y < srcBounds.Max.Y; y++ {
+			offset := src.PixOffset(srcBounds.Min.X, y) + 3
+			for x := 0; x < w; x++ {
+				if src.Pix[offset] == 0 {
+					hasZero = true
+				} else {
+					hasVisible = true
+				}
+				offset += 4
+			}
+		}
+	} else {
+		src = image.NewNRGBA(image.Rect(0, 0, w, h))
 		for y := 0; y < h; y++ {
 			for x := 0; x < w; x++ {
-			c := color.NRGBAModel.Convert(img.At(bounds.Min.X+x, bounds.Min.Y+y)).(color.NRGBA)
+				c := imageNRGBAAt(source, bounds.Min.X+x, bounds.Min.Y+y)
 				src.SetNRGBA(x, y, c)
 				if c.A == 0 {
 					hasZero = true
@@ -128,15 +294,18 @@ func imageWithTransparentEdge(img image.Image) (image.Image, int) {
 				}
 			}
 		}
+	}
 	if !hasZero || !hasVisible {
 		return img, 0
 	}
+	srcBounds := src.Bounds()
 	out := image.NewNRGBA(image.Rect(0, 0, w+2, h+2))
 	for y := 0; y < h; y++ {
 		for x := 0; x < w; x++ {
-			c := src.NRGBAAt(x, y)
+			sx, sy := srcBounds.Min.X+x, srcBounds.Min.Y+y
+			c := src.NRGBAAt(sx, sy)
 			if c.A == 0 {
-				if edge, ok := transparentEdgeColor(src, x, y); ok {
+				if edge, ok := transparentEdgeColor(src, sx, sy); ok {
 					c = edge
 				}
 			}
@@ -158,6 +327,28 @@ func imageWithTransparentEdge(img image.Image) (image.Image, int) {
 	return out, 1
 }
 
+// imagePixelSource 获取图片像素源
+// 入参: img 图片对象
+// 返回: image.Image 图片像素源
+func imagePixelSource(img image.Image) image.Image {
+	if src, ok := img.(*canvasimage.Image); ok {
+		if decoded, err := src.Image(); err == nil {
+			return decoded
+		}
+	}
+	return img
+}
+
+// imageNRGBAAt 获取图片NRGBA像素
+// 入参: img 图片对象, x X坐标, y Y坐标
+// 返回: color.NRGBA NRGBA像素
+func imageNRGBAAt(img image.Image, x, y int) color.NRGBA {
+	if src, ok := img.(*image.NRGBA); ok {
+		return src.NRGBAAt(x, y)
+	}
+	return color.NRGBAModel.Convert(img.At(x, y)).(color.NRGBA)
+}
+
 // transparentEdgeColor 获取透明像素相邻的可见颜色
 // 入参: img 图片对象, x X坐标, y Y坐标
 // 返回: color.NRGBA 颜色, bool 是否存在

ofdgo_renderer_layer.go

@@ -30,7 +30,7 @@ func (r *Renderer) renderAnnotations(ctx *canvas.Context, pageID string, pageH f
 		box, _ := ParseBox(annot.Appearance.Boundary)
 		ctm := Matrix{a: 1, d: 1, e: box.X, f: box.Y}
 		for _, obj := range annot.Appearance.Objects {
-			r.renderObject(ctx, obj, pageH, nil, nil, 0, &ctm, false)
+			r.renderObject(ctx, obj, pageH, nil, nil, 0, &ctm, false, nil)
 		}
 	}
 }
@@ -38,20 +38,25 @@ func (r *Renderer) renderAnnotations(ctx *canvas.Context, pageID string, pageH f
 // renderTemplate 渲染模板
 // 入参: ctx 画布上下文, templateID 模板ID, pageH 页面高度
 func (r *Renderer) renderTemplate(ctx *canvas.Context, templateID string, pageH float64) {
+	tplContent := r.templatePageCache[templateID]
+	if tplContent == nil {
 		var tplPage *TemplatePage
-	for _, tp := range r.Reader.doc.CommonData.TemplatePage {
+		for i := range r.Reader.doc.CommonData.TemplatePage {
-		if tp.ID == templateID {
+			if r.Reader.doc.CommonData.TemplatePage[i].ID == templateID {
-			tplPage = &tp
+				tplPage = &r.Reader.doc.CommonData.TemplatePage[i]
 				break
 			}
 		}
 		if tplPage == nil {
 			return
 		}
-	tplContent, err := r.Reader.PageContent(Page{BaseLoc: tplPage.BaseLoc})
+		var err error
+		tplContent, err = r.Reader.PageContent(Page{BaseLoc: tplPage.BaseLoc})
 		if err != nil {
 			return
 		}
+		r.templatePageCache[templateID] = tplContent
+	}
 	if tplContent.Content.Layer != nil {
 		for _, layer := range tplContent.Content.Layer {
 			r.renderLayer(ctx, layer, pageH, nil, nil, 0, nil)
@@ -65,27 +70,27 @@ func (r *Renderer) renderLayer(ctx *canvas.Context, layer Layer, pageH float64,
 	defaultFill, defaultStroke, defaultLW = r.drawParamDefaults(layer.DrawParam, defaultFill, defaultStroke, defaultLW)
 	if len(layer.Objects) > 0 {
 		for _, obj := range layer.Objects {
-			r.renderObject(ctx, obj, pageH, defaultFill, defaultStroke, defaultLW, parentCTM, false)
+			r.renderObject(ctx, obj, pageH, defaultFill, defaultStroke, defaultLW, parentCTM, false, nil)
 		}
 		return
 	}
 	for _, textObj := range layer.TextObject {
-		r.renderText(ctx, textObj, pageH, defaultFill, defaultStroke, parentCTM, false)
+		r.renderText(ctx, textObj, pageH, defaultFill, defaultStroke, parentCTM, false, nil)
 	}
 	for _, pathObj := range layer.PathObject {
-		r.renderPath(ctx, pathObj, pageH, defaultFill, defaultStroke, defaultLW, parentCTM, false)
+		r.renderPath(ctx, pathObj, pageH, defaultFill, defaultStroke, defaultLW, parentCTM, false, nil)
 	}
 	for _, imgObj := range layer.ImageObject {
-		r.renderImage(ctx, imgObj, pageH, parentCTM, false)
+		r.renderImage(ctx, imgObj, pageH, parentCTM, false, nil)
 	}
 	for _, cgu := range layer.CompositeGraphicUnit {
-		r.renderCompositeGraphicUnit(ctx, cgu, pageH, defaultFill, defaultStroke, defaultLW, parentCTM, false)
+		r.renderCompositeGraphicUnit(ctx, cgu, pageH, defaultFill, defaultStroke, defaultLW, parentCTM, false, nil)
 	}
 }
 
 // renderCompositeGraphicUnit 渲染复合图元
-// 入参: ctx 画布上下文, cgu 复合图元对象, pageH 页面高度, defaultFill 默认填充色, defaultStroke 默认描边色, defaultLW 默认线宽, parentCTM 父级CTM, boundaryInCTM 边界是否参与CTM变换
+// 入参: ctx 画布上下文, cgu 复合图元对象, pageH 页面高度, defaultFill 默认填充色, defaultStroke 默认描边色, defaultLW 默认线宽, parentCTM 父级CTM, boundaryInCTM 边界是否参与CTM变换, parentClip 父级裁剪路径
-func (r *Renderer) renderCompositeGraphicUnit(ctx *canvas.Context, cgu CompositeGraphicUnit, pageH float64, defaultFill, defaultStroke color.Color, defaultLW float64, parentCTM *Matrix, boundaryInCTM bool) {
+func (r *Renderer) renderCompositeGraphicUnit(ctx *canvas.Context, cgu CompositeGraphicUnit, pageH float64, defaultFill, defaultStroke color.Color, defaultLW float64, parentCTM *Matrix, boundaryInCTM bool, parentClip *canvas.Path) {
 	if cgu.Visible != nil && !*cgu.Visible {
 		return
 	}
@@ -94,53 +99,55 @@ func (r *Renderer) renderCompositeGraphicUnit(ctx *canvas.Context, cgu Composite
 	if parentCTM != nil {
 		currentCTM = parentCTM.Multiply(currentCTM)
 	}
+	box, _ := ParseBox(cgu.Boundary)
+	clipPath := intersectClipPath(parentClip, r.buildClipPath(cgu.Clips, pageH, box.X, box.Y, currentCTM))
 	if cgu.ResourceID != "" {
 		if ref, ok := r.CompositeGraphicUnits[cgu.ResourceID]; ok {
 			refCopy := *ref
 			refCopy.Alpha = mergeAlpha(refCopy.Alpha, cgu.Alpha)
-			r.renderCompositeGraphicUnit(ctx, refCopy, pageH, defaultFill, defaultStroke, defaultLW, &currentCTM, true)
+			r.renderCompositeGraphicUnit(ctx, refCopy, pageH, defaultFill, defaultStroke, defaultLW, &currentCTM, true, clipPath)
 		}
 	}
 	defaultFill, defaultStroke, defaultLW = r.drawParamDefaults(cgu.DrawParam, defaultFill, defaultStroke, defaultLW)
 	if len(cgu.Objects) > 0 {
 		for _, obj := range cgu.Objects {
 			obj = mergeGraphicObjectAlpha(obj, cgu.Alpha)
-			r.renderObject(ctx, obj, pageH, defaultFill, defaultStroke, defaultLW, &currentCTM, boundaryInCTM)
+			r.renderObject(ctx, obj, pageH, defaultFill, defaultStroke, defaultLW, &currentCTM, boundaryInCTM, clipPath)
 		}
 		ctx.Pop()
 		return
 	}
 	for _, imgObj := range cgu.ImageObject {
 		imgObj.Alpha = mergeAlpha(imgObj.Alpha, cgu.Alpha)
-		r.renderImage(ctx, imgObj, pageH, &currentCTM, boundaryInCTM)
+		r.renderImage(ctx, imgObj, pageH, &currentCTM, boundaryInCTM, clipPath)
 	}
 	for _, pathObj := range cgu.PathObject {
 		pathObj.Alpha = mergeAlpha(pathObj.Alpha, cgu.Alpha)
-		r.renderPath(ctx, pathObj, pageH, defaultFill, defaultStroke, defaultLW, &currentCTM, boundaryInCTM)
+		r.renderPath(ctx, pathObj, pageH, defaultFill, defaultStroke, defaultLW, &currentCTM, boundaryInCTM, clipPath)
 	}
 	for _, textObj := range cgu.TextObject {
 		textObj.Alpha = mergeAlpha(textObj.Alpha, cgu.Alpha)
-		r.renderText(ctx, textObj, pageH, defaultFill, defaultStroke, &currentCTM, boundaryInCTM)
+		r.renderText(ctx, textObj, pageH, defaultFill, defaultStroke, &currentCTM, boundaryInCTM, clipPath)
 	}
 	for _, subCgu := range cgu.CompositeGraphicUnit {
 		subCgu.Alpha = mergeAlpha(subCgu.Alpha, cgu.Alpha)
-		r.renderCompositeGraphicUnit(ctx, subCgu, pageH, defaultFill, defaultStroke, defaultLW, &currentCTM, boundaryInCTM)
+		r.renderCompositeGraphicUnit(ctx, subCgu, pageH, defaultFill, defaultStroke, defaultLW, &currentCTM, boundaryInCTM, clipPath)
 	}
 	ctx.Pop()
 }
 
 // renderObject 渲染图形对象
-// 入参: ctx 画布上下文, obj 图形对象, pageH 页面高度, defaultFill 默认填充色, defaultStroke 默认描边色, defaultLW 默认线宽, parentCTM 父级CTM, boundaryInCTM 边界是否参与CTM变换
+// 入参: ctx 画布上下文, obj 图形对象, pageH 页面高度, defaultFill 默认填充色, defaultStroke 默认描边色, defaultLW 默认线宽, parentCTM 父级CTM, boundaryInCTM 边界是否参与CTM变换, parentClip 父级裁剪路径
-func (r *Renderer) renderObject(ctx *canvas.Context, obj GraphicObject, pageH float64, defaultFill, defaultStroke color.Color, defaultLW float64, parentCTM *Matrix, boundaryInCTM bool) {
+func (r *Renderer) renderObject(ctx *canvas.Context, obj GraphicObject, pageH float64, defaultFill, defaultStroke color.Color, defaultLW float64, parentCTM *Matrix, boundaryInCTM bool, parentClip *canvas.Path) {
 	switch obj.Type {
 	case "TextObject":
-		r.renderText(ctx, obj.TextObject, pageH, defaultFill, defaultStroke, parentCTM, boundaryInCTM)
+		r.renderText(ctx, obj.TextObject, pageH, defaultFill, defaultStroke, parentCTM, boundaryInCTM, parentClip)
 	case "PathObject":
-		r.renderPath(ctx, obj.PathObject, pageH, defaultFill, defaultStroke, defaultLW, parentCTM, boundaryInCTM)
+		r.renderPath(ctx, obj.PathObject, pageH, defaultFill, defaultStroke, defaultLW, parentCTM, boundaryInCTM, parentClip)
 	case "ImageObject":
-		r.renderImage(ctx, obj.ImageObject, pageH, parentCTM, boundaryInCTM)
+		r.renderImage(ctx, obj.ImageObject, pageH, parentCTM, boundaryInCTM, parentClip)
 	case "CompositeGraphicUnit", "CompositeObject":
-		r.renderCompositeGraphicUnit(ctx, obj.CompositeGraphicUnit, pageH, defaultFill, defaultStroke, defaultLW, parentCTM, boundaryInCTM)
+		r.renderCompositeGraphicUnit(ctx, obj.CompositeGraphicUnit, pageH, defaultFill, defaultStroke, defaultLW, parentCTM, boundaryInCTM, parentClip)
 	}
 }
 

ofdgo_renderer_output.go

@@ -42,7 +42,7 @@ func (r *Renderer) RenderToImage(page *PageContent) (image.Image, error) {
 // 入参: page 页面内容, writer 输出流
 // 返回: error 错误信息
 func (r *Renderer) RenderToSVG(page *PageContent, writer io.Writer) error {
-	c, err := r.RenderPage(page)
+	c, err := r.renderPage(page)
 	if err != nil {
 		return err
 	}
@@ -59,21 +59,28 @@ func replacePDFProducer(data []byte) []byte {
 		return data
 	}
 	dst := []byte("/Producer(xiaoqidun/ofdgo)")
-	result := make([]byte, 0, len(data)-len(old)+len(dst))
+	copy(data[idx:idx+len(old)], dst)
-	return append(append(append(result, data[:idx]...), dst...), data[idx+len(old):]...)
+	return data
 }
 
 // RenderToPDF 渲染为PDF
 // 入参: page 页面内容, writer 输出流
 // 返回: error 错误信息
 func (r *Renderer) RenderToPDF(page *PageContent, writer io.Writer) error {
-	c, err := r.RenderPage(page)
+	c, err := r.renderPage(page)
 	if err != nil {
 		return err
 	}
+	box, err := r.GetPageBox(page)
+	if err != nil {
+		return err
+	}
+	pages := []pdfPage{{Content: page, Box: box}}
+	navigation := newPDFNavigation(r, r.Reader.doc, pages)
 	var buf bytes.Buffer
 	p := pdf.New(&buf, c.W, c.H, nil)
 	p.SetInfo("", "", "", "", "xiaoqidun/ofdgo")
+	navigation.apply(p, 0)
 	c.RenderTo(p)
 	if err := p.Close(); err != nil {
 		return err
@@ -86,7 +93,7 @@ func (r *Renderer) RenderToPDF(page *PageContent, writer io.Writer) error {
 // 入参: page 页面内容, writer 输出流
 // 返回: error 错误信息
 func (r *Renderer) RenderToEPS(page *PageContent, writer io.Writer) error {
-	c, err := r.RenderPage(page)
+	c, err := r.renderPage(page)
 	if err != nil {
 		return err
 	}
@@ -104,28 +111,33 @@ func (r *Renderer) RenderToMultiPagePDF(writer io.Writer) error {
 	if len(doc.Pages.Page) == 0 {
 		return fmt.Errorf("no pages found")
 	}
+	pages := make([]pdfPage, len(doc.Pages.Page))
+	for i, pageRef := range doc.Pages.Page {
+		page, err := r.Reader.PageContent(pageRef)
+		if err != nil {
+			return fmt.Errorf("failed to read page %d: %w", i+1, err)
+		}
+		box, err := r.GetPageBox(page)
+		if err != nil {
+			return fmt.Errorf("failed to read page %d area: %w", i+1, err)
+		}
+		pages[i] = pdfPage{Content: page, Box: box}
+	}
+	navigation := newPDFNavigation(r, doc, pages)
 	var buf bytes.Buffer
-	var p *pdf.PDF
+	p := pdf.New(&buf, pages[0].Box.W, pages[0].Box.H, nil)
-	for _, pgRef := range doc.Pages.Page {
-		page, err := r.Reader.PageContent(pgRef)
-		if err != nil {
-			continue
-		}
-		c, err := r.RenderPage(page)
-		if err != nil {
-			continue
-		}
-		if p == nil {
-			p = pdf.New(&buf, c.W, c.H, nil)
 	p.SetInfo("", "", "", "", "xiaoqidun/ofdgo")
-		} else {
+	for i, page := range pages {
+		c, err := r.renderPage(page.Content)
+		if err != nil {
+			return fmt.Errorf("failed to render page %d: %w", i+1, err)
+		}
+		if i > 0 {
 			p.NewPage(c.W, c.H)
 		}
+		navigation.apply(p, i)
 		c.RenderTo(p)
 	}
-	if p == nil {
-		return fmt.Errorf("failed to render any page")
-	}
 	if err := p.Close(); err != nil {
 		return err
 	}

ofdgo_renderer_path.go

@@ -163,8 +163,8 @@ func (s *pathStyle) scale(ctm Matrix) {
 }
 
 // renderPath 渲染路径
-// 入参: ctx 画布上下文, obj 路径对象, pageH 页面高度, defaultFill 默认填充色, defaultStroke 默认描边色, defaultLW 默认线宽, parentCTM 父级CTM, boundaryInCTM 边界是否参与CTM变换
+// 入参: ctx 画布上下文, obj 路径对象, pageH 页面高度, defaultFill 默认填充色, defaultStroke 默认描边色, defaultLW 默认线宽, parentCTM 父级CTM, boundaryInCTM 边界是否参与CTM变换, parentClip 父级裁剪路径
-func (r *Renderer) renderPath(ctx *canvas.Context, obj PathObject, pageH float64, defaultFill, defaultStroke color.Color, defaultLW float64, parentCTM *Matrix, boundaryInCTM bool) {
+func (r *Renderer) renderPath(ctx *canvas.Context, obj PathObject, pageH float64, defaultFill, defaultStroke color.Color, defaultLW float64, parentCTM *Matrix, boundaryInCTM bool, parentClip *canvas.Path) {
 	if obj.Visible != nil && !*obj.Visible {
 		return
 	}
@@ -191,7 +191,7 @@ func (r *Renderer) renderPath(ctx *canvas.Context, obj PathObject, pageH float64
 	if rectPath := r.buildTinyFillRectPath(obj, pageH, ctm, bx, by); rectPath != nil {
 		p = rectPath
 	}
-	clipPath := r.buildClipPath(obj.Clips, pageH, bx, by, ctm)
+	clipPath := intersectClipPath(parentClip, r.buildClipPath(obj.Clips, pageH, bx, by, ctm))
 	shouldFill := false
 	if obj.Fill != nil {
 		shouldFill = *obj.Fill
@@ -204,7 +204,7 @@ func (r *Renderer) renderPath(ctx *canvas.Context, obj PathObject, pageH float64
 		if clipPath != nil {
 			fp = p.Copy()
 			fp.Close()
-			fp = fp.And(clipPath)
+			fp = applyClipPath(fp, clipPath)
 		}
 		r.renderPattern(ctx, style.fillPattern, style.fillPatternColor, pageH, fp, ctm, bx, by)
 	} else if shouldFill && style.fillPaint != nil {
@@ -214,7 +214,7 @@ func (r *Renderer) renderPath(ctx *canvas.Context, obj PathObject, pageH float64
 		if clipPath != nil {
 			fp = p.Copy()
 			fp.Close()
-			fp = fp.And(clipPath)
+			fp = applyClipPath(fp, clipPath)
 		}
 		ctx.DrawPath(0, 0, fp)
 	}
@@ -243,7 +243,7 @@ func (r *Renderer) renderPath(ctx *canvas.Context, obj PathObject, pageH float64
 				sp = sp.Dash(style.dashOffset, style.dashPattern...)
 			}
 			sp = sp.Stroke(style.lineWidth, style.lineCap, style.lineJoin, canvas.Tolerance)
-			sp = sp.And(clipPath)
+			sp = applyClipPath(sp, clipPath)
 			ctx.SetFill(style.strokePaint)
 			ctx.SetStrokeColor(canvas.Transparent)
 			ctx.DrawPath(0, 0, sp)
@@ -304,7 +304,7 @@ func (r *Renderer) renderPattern(ctx *canvas.Context, pattern *Pattern, defaultC
 		for iy := startY; iy <= endY; iy++ {
 			tileCTM := patternCTM.Multiply(TranslationMatrix(float64(ix)*xStep, float64(iy)*yStep))
 			for _, obj := range pattern.CellContent.Objects {
-				r.renderObject(ctx, obj, pageH, defaultColor, defaultColor, 0, &tileCTM, false)
+				r.renderObject(ctx, obj, pageH, defaultColor, defaultColor, 0, &tileCTM, false, clip)
 			}
 		}
 	}
@@ -411,7 +411,7 @@ func (r *Renderer) buildClipPath(clips *Clips, pageH float64, bx, by float64, ob
 		var clipPath *canvas.Path
 		for _, area := range clip.Area {
 			areaCTM := NewMatrix(area.CTM)
-			if clips.TransFlag {
+			if clips.TransFlag == nil || *clips.TransFlag {
 				areaCTM = objectCTM.Multiply(areaCTM)
 			}
 			for _, pathObj := range area.Path {
@@ -422,7 +422,7 @@ func (r *Renderer) buildClipPath(clips *Clips, pageH float64, bx, by float64, ob
 				if clipPath == nil {
 					clipPath = cp
 				} else {
-					clipPath = clipPath.Or(cp)
+					clipPath = unionClipPath(clipPath, cp)
 				}
 			}
 		}
@@ -430,13 +430,123 @@ func (r *Renderer) buildClipPath(clips *Clips, pageH float64, bx, by float64, ob
 			if p == nil {
 				p = clipPath
 			} else {
-				p = p.And(clipPath)
+				p = intersectClipPath(p, clipPath)
 			}
 		}
 	}
 	return p
 }
 
+// intersectClipPath 求裁剪路径交集
+// 入参: parent 父级裁剪路径, current 当前裁剪路径
+// 返回: *canvas.Path 相交后的裁剪路径
+func intersectClipPath(parent, current *canvas.Path) *canvas.Path {
+	if parent == nil {
+		return current
+	}
+	if current == nil {
+		return parent
+	}
+	parentRect, parentOK := rectangularPath(parent)
+	currentRect, currentOK := rectangularPath(current)
+	if parentOK && currentOK {
+		return parentRect.And(currentRect).ToPath()
+	}
+	if parent.Empty() || current.Empty() {
+		return &canvas.Path{}
+	}
+	if parentOK && parentRect.Contains(current.FastBounds()) {
+		return current
+	}
+	if currentOK && currentRect.Contains(parent.FastBounds()) {
+		return parent
+	}
+	return parent.And(current)
+}
+
+// unionClipPath 合并裁剪区域
+// 入参: left 左侧裁剪路径, right 右侧裁剪路径
+// 返回: *canvas.Path 合并后的裁剪路径
+func unionClipPath(left, right *canvas.Path) *canvas.Path {
+	leftRect, leftOK := rectangularPath(left)
+	rightRect, rightOK := rectangularPath(right)
+	if leftOK && rightOK {
+		bounds := leftRect.Add(rightRect)
+		area := leftRect.Area() + rightRect.Area() - leftRect.And(rightRect).Area()
+		if canvas.Equal(area, bounds.Area()) {
+			return bounds.ToPath()
+		}
+	}
+	return left.Or(right)
+}
+
+// applyClipPath 应用裁剪路径
+// 入参: path 绘制路径, clip 裁剪路径
+// 返回: *canvas.Path 裁剪后的绘制路径
+func applyClipPath(path, clip *canvas.Path) *canvas.Path {
+	if path == nil || clip == nil {
+		return path
+	}
+	if path.Empty() || clip.Empty() {
+		return &canvas.Path{}
+	}
+	if rect, ok := rectangularPath(clip); ok {
+		bounds := path.FastBounds()
+		if rect.Contains(bounds) {
+			return path
+		}
+		if !rect.Overlaps(bounds) {
+			return &canvas.Path{}
+		}
+		if pathRect, ok := rectangularPath(path); ok {
+			return pathRect.And(rect).ToPath()
+		}
+		return path.Flatten(canvas.Tolerance).Clip(rect.X0, rect.Y0, rect.X1, rect.Y1)
+	}
+	return path.And(clip)
+}
+
+// rectangularPath 获取矩形路径区域
+// 入参: path 路径对象
+// 返回: canvas.Rect 矩形区域, bool 是否为矩形
+func rectangularPath(path *canvas.Path) (canvas.Rect, bool) {
+	if path == nil || path.HasSubpaths() || !path.Closed() {
+		return canvas.Rect{}, false
+	}
+	data := path.Data()
+	for i := 0; i < len(data); i += 4 {
+		if i+4 > len(data) || (data[i] != canvas.MoveToCmd && data[i] != canvas.LineToCmd && data[i] != canvas.CloseCmd) {
+			return canvas.Rect{}, false
+		}
+	}
+	points := path.Coords()
+	if len(points) != 5 || !points[0].Equals(points[4]) {
+		return canvas.Rect{}, false
+	}
+	rect := path.FastBounds()
+	corners := 0
+	for _, point := range points[:4] {
+		corner := 0
+		switch {
+		case canvas.Equal(point.X, rect.X0) && canvas.Equal(point.Y, rect.Y0):
+			corner = 1
+		case canvas.Equal(point.X, rect.X1) && canvas.Equal(point.Y, rect.Y0):
+			corner = 2
+		case canvas.Equal(point.X, rect.X1) && canvas.Equal(point.Y, rect.Y1):
+			corner = 4
+		case canvas.Equal(point.X, rect.X0) && canvas.Equal(point.Y, rect.Y1):
+			corner = 8
+		default:
+			return canvas.Rect{}, false
+		}
+		if corners&corner != 0 {
+			return canvas.Rect{}, false
+		}
+		corners |= corner
+	}
+	return rect, corners == 15
+}
+
 // buildTinyFillRectPath 构建微小填充矩形路径
 // 入参: obj 路径对象, pageH 页面高度, ctm 变换矩阵, bx 边界X坐标, by 边界Y坐标
 // 返回: *canvas.Path 路径对象

ofdgo_renderer_pdf.go

@@ -0,0 +1,322 @@
+// Copyright 2025-2026 肖其顿 (XIAO QI DUN)
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package ofdgo
+
+import (
+	"fmt"
+	"net/url"
+
+	"github.com/tdewolff/canvas"
+	"github.com/tdewolff/canvas/renderers/pdf"
+)
+
+// pdfPage PDF页面数据
+type pdfPage struct {
+	Content *PageContent
+	Box     Box
+}
+
+// pdfNavigation PDF导航信息
+type pdfNavigation struct {
+	Anchor  map[int][]pdfAnchor
+	Link    map[int][]pdfLink
+	Outline map[int][]pdfOutline
+	nextID  int
+}
+
+// pdfAnchor PDF跳转目标
+type pdfAnchor struct {
+	Name string
+	Rect canvas.Rect
+}
+
+// pdfLink PDF链接
+type pdfLink struct {
+	URI  string
+	Rect canvas.Rect
+}
+
+// pdfOutline PDF大纲
+type pdfOutline struct {
+	Name  string
+	Level int
+	Y     float64
+}
+
+// pdfActionSource PDF动作来源
+type pdfActionSource struct {
+	Box     Box
+	Actions []Action
+}
+
+// newPDFNavigation 创建PDF导航信息
+// 入参: renderer 渲染器, doc 文档结构, pages 页面数据
+// 返回: *pdfNavigation PDF导航信息
+func newPDFNavigation(renderer *Renderer, doc *Document, pages []pdfPage) *pdfNavigation {
+	navigation := &pdfNavigation{
+		Anchor:  make(map[int][]pdfAnchor),
+		Link:    make(map[int][]pdfLink),
+		Outline: make(map[int][]pdfOutline),
+	}
+	pageIndex := make(map[string]int, len(pages))
+	for i, page := range pages {
+		pageIndex[page.Content.ID] = i
+	}
+	bookmarks := make(map[string]Dest)
+	if doc != nil {
+		for _, bookmark := range doc.Bookmarks.Bookmark {
+			bookmarks[bookmark.Name] = bookmark.Dest
+		}
+	}
+	for i, page := range pages {
+		sources := pageActionSources(page)
+		if renderer.RenderAnnotations {
+			sources = append(sources, annotationActionSources(renderer.Reader.Annots[page.Content.ID])...)
+		}
+		for _, source := range sources {
+			rect := pdfSourceRect(source.Box, page.Box.H)
+			for _, action := range source.Actions {
+				if action.Event != "CLICK" {
+					continue
+				}
+				navigation.addAction(i, rect, action, bookmarks, pageIndex, pages)
+			}
+		}
+	}
+	if doc != nil {
+		navigation.addOutlines(doc.Outlines.OutlineElem, 0, bookmarks, pageIndex, pages)
+	}
+	return navigation
+}
+
+// addAction 添加PDF动作
+// 入参: page 页面索引, rect 动作区域, action 动作, bookmarks 书签, pageIndex 页面索引表, pages 页面数据
+func (n *pdfNavigation) addAction(page int, rect canvas.Rect, action Action, bookmarks map[string]Dest, pageIndex map[string]int, pages []pdfPage) {
+	if action.Goto != nil {
+		dest := gotoDest(action.Goto, bookmarks)
+		if dest == nil {
+			return
+		}
+		target, ok := pageIndex[dest.PageID]
+		if !ok {
+			return
+		}
+		targetRect, ok := pdfDestRect(*dest, pages[target].Box.H)
+		if !ok {
+			return
+		}
+		name := fmt.Sprintf("ofdgo-dest-%d", n.nextID)
+		n.nextID++
+		n.Anchor[target] = append(n.Anchor[target], pdfAnchor{Name: name, Rect: targetRect})
+		n.Link[page] = append(n.Link[page], pdfLink{URI: "#" + name, Rect: rect})
+		return
+	}
+	if action.URI != nil && action.URI.URI != "" {
+		n.Link[page] = append(n.Link[page], pdfLink{URI: resolveActionURI(*action.URI), Rect: rect})
+	}
+}
+
+// addOutlines 添加PDF大纲
+// 入参: outlines 大纲节点, level 节点层级, bookmarks 书签, pageIndex 页面索引表, pages 页面数据
+func (n *pdfNavigation) addOutlines(outlines []OutlineElem, level int, bookmarks map[string]Dest, pageIndex map[string]int, pages []pdfPage) {
+	for _, outline := range outlines {
+		if dest := outlineDest(outline, bookmarks); dest != nil {
+			if page, ok := pageIndex[dest.PageID]; ok {
+				n.Outline[page] = append(n.Outline[page], pdfOutline{
+					Name:  outline.Title,
+					Level: level,
+					Y:     pdfDestY(*dest, pages[page].Box.H),
+				})
+			}
+		}
+		n.addOutlines(outline.OutlineElem, level+1, bookmarks, pageIndex, pages)
+	}
+}
+
+// apply 应用PDF导航信息
+// 入参: renderer PDF渲染器, page 页面索引
+func (n *pdfNavigation) apply(renderer *pdf.PDF, page int) {
+	for _, anchor := range n.Anchor[page] {
+		renderer.AddAnchor(anchor.Name, anchor.Rect)
+	}
+	for _, link := range n.Link[page] {
+		renderer.AddLink(link.URI, link.Rect)
+	}
+	for _, outline := range n.Outline[page] {
+		renderer.AddOutline(outline.Name, outline.Level, outline.Y)
+	}
+}
+
+// pageActionSources 获取页面动作来源
+// 入参: page 页面数据
+// 返回: []pdfActionSource 动作来源
+func pageActionSources(page pdfPage) []pdfActionSource {
+	sources := make([]pdfActionSource, 0)
+	if len(page.Content.Actions) > 0 {
+		sources = append(sources, pdfActionSource{
+			Box:     Box{W: page.Box.W, H: page.Box.H},
+			Actions: page.Content.Actions,
+		})
+	}
+	for _, layer := range page.Content.Content.Layer {
+		for _, object := range layer.Objects {
+			sources = appendGraphicActionSources(sources, object, nil)
+		}
+	}
+	return sources
+}
+
+// annotationActionSources 获取注释动作来源
+// 入参: annotations 页面注释
+// 返回: []pdfActionSource 动作来源
+func annotationActionSources(annotations []Annotation) []pdfActionSource {
+	sources := make([]pdfActionSource, 0)
+	for _, annotation := range annotations {
+		box, err := ParseBox(annotation.Appearance.Boundary)
+		if err != nil {
+			continue
+		}
+		for _, object := range annotation.Appearance.Objects {
+			sources = appendGraphicActionSources(sources, object, &box)
+		}
+	}
+	return sources
+}
+
+// appendGraphicActionSources 添加图形对象动作来源
+// 入参: sources 动作来源, object 图形对象, box 指定动作区域
+// 返回: []pdfActionSource 动作来源
+func appendGraphicActionSources(sources []pdfActionSource, object GraphicObject, box *Box) []pdfActionSource {
+	var boundary string
+	var actions []Action
+	var children []GraphicObject
+	switch object.Type {
+	case "TextObject":
+		boundary = object.TextObject.Boundary
+		actions = object.TextObject.Actions
+	case "PathObject":
+		boundary = object.PathObject.Boundary
+		actions = object.PathObject.Actions
+	case "ImageObject":
+		boundary = object.ImageObject.Boundary
+		actions = object.ImageObject.Actions
+	case "CompositeGraphicUnit", "CompositeObject":
+		boundary = object.CompositeGraphicUnit.Boundary
+		actions = object.CompositeGraphicUnit.Actions
+		children = object.CompositeGraphicUnit.Objects
+	}
+	sourceBox := box
+	if sourceBox == nil && boundary != "" {
+		if value, err := ParseBox(boundary); err == nil {
+			sourceBox = &value
+		}
+	}
+	if sourceBox != nil && len(actions) > 0 {
+		sources = append(sources, pdfActionSource{Box: *sourceBox, Actions: actions})
+	}
+	for _, child := range children {
+		sources = appendGraphicActionSources(sources, child, box)
+	}
+	return sources
+}
+
+// gotoDest 获取文档内跳转目标
+// 入参: action 跳转动作, bookmarks 书签
+// 返回: *Dest 跳转目标
+func gotoDest(action *Goto, bookmarks map[string]Dest) *Dest {
+	if action.Dest != nil {
+		return action.Dest
+	}
+	if action.Bookmark != nil {
+		if dest, ok := bookmarks[action.Bookmark.Name]; ok {
+			return &dest
+		}
+	}
+	return nil
+}
+
+// outlineDest 获取大纲跳转目标
+// 入参: outline 大纲节点, bookmarks 书签
+// 返回: *Dest 跳转目标
+func outlineDest(outline OutlineElem, bookmarks map[string]Dest) *Dest {
+	for _, action := range outline.Actions {
+		if action.Goto != nil {
+			if dest := gotoDest(action.Goto, bookmarks); dest != nil {
+				return dest
+			}
+		}
+	}
+	for _, child := range outline.OutlineElem {
+		if dest := outlineDest(child, bookmarks); dest != nil {
+			return dest
+		}
+	}
+	return nil
+}
+
+// resolveActionURI 解析URI动作地址
+// 入参: action URI动作
+// 返回: string URI地址
+func resolveActionURI(action URI) string {
+	if action.Base == "" {
+		return action.URI
+	}
+	base, err := url.Parse(action.Base)
+	if err != nil {
+		return action.URI
+	}
+	target, err := url.Parse(action.URI)
+	if err != nil {
+		return action.URI
+	}
+	return base.ResolveReference(target).String()
+}
+
+// pdfSourceRect 转换PDF动作区域
+// 入参: box OFD区域, pageH 页面高度
+// 返回: canvas.Rect PDF区域
+func pdfSourceRect(box Box, pageH float64) canvas.Rect {
+	return canvas.RectFromSize(box.X, pageH-box.Y-box.H, box.W, box.H)
+}
+
+// pdfDestRect 转换PDF跳转目标
+// 入参: dest OFD跳转目标, pageH 页面高度
+// 返回: canvas.Rect PDF目标区域, bool 是否支持
+func pdfDestRect(dest Dest, pageH float64) (canvas.Rect, bool) {
+	switch dest.Type {
+	case "XYZ":
+		return canvas.Rect{X0: dest.Left, Y0: pageH - dest.Top, X1: dest.Left, Y1: pageH - dest.Top}, true
+	case "Fit":
+		return canvas.Rect{}, true
+	case "FitH":
+		return canvas.Rect{Y0: pageH - dest.Top, Y1: pageH - dest.Top}, true
+	case "FitV":
+		return canvas.Rect{X0: dest.Left, X1: dest.Left}, true
+	case "FitR":
+		return canvas.Rect{X0: dest.Left, Y0: pageH - dest.Bottom, X1: dest.Right, Y1: pageH - dest.Top}, true
+	}
+	return canvas.Rect{}, false
+}
+
+// pdfDestY 获取PDF大纲目标位置
+// 入参: dest OFD跳转目标, pageH 页面高度
+// 返回: float64 PDF纵坐标
+func pdfDestY(dest Dest, pageH float64) float64 {
+	switch dest.Type {
+	case "XYZ", "FitH", "FitR":
+		return pageH - dest.Top
+	}
+	return 0
+}

ofdgo_renderer_stamp.go

@@ -18,16 +18,23 @@ import (
 	"bytes"
 	"image"
 	"image/color"
+	"image/draw"
+	"math"
 
 	"github.com/tdewolff/canvas"
+	"github.com/tdewolff/canvas/renderers/rasterizer"
 )
 
 // renderStamp 渲染印章
 // 入参: ctx 画布上下文, s 印章对象, pageH 页面高度
 func (r *Renderer) renderStamp(ctx *canvas.Context, s Stamp, pageH float64) {
-	x, y, w, h := s.Box.X, s.Box.Y, s.Box.W, s.Box.H
-	screenY := pageH - (y + h)
 	if s.Type == "ofd" && len(s.Data) > 0 {
+		if s.Clip != nil {
+			if img := r.renderOFDStampImage(s.Data); img != nil {
+				r.renderStampImage(ctx, stampImageWithTransparentWhite(img), s, pageH)
+			}
+			return
+		}
 		reader, err := NewReader(bytes.NewReader(s.Data), int64(len(s.Data)))
 		if err == nil {
 			defer reader.Close()
@@ -44,8 +51,8 @@ func (r *Renderer) renderStamp(ctx *canvas.Context, s Stamp, pageH float64) {
 						continue
 					}
 					ctx.Push()
-					ctx.Translate(x, screenY)
+					ctx.Translate(s.Box.X, pageH-(s.Box.Y+s.Box.H))
-					ctx.Scale(w/sealBox.W, h/sealBox.H)
+					ctx.Scale(s.Box.W/sealBox.W, s.Box.H/sealBox.H)
 					renderer.renderPageToContext(ctx, content, false)
 					ctx.Pop()
 				}
@@ -56,17 +63,80 @@ func (r *Renderer) renderStamp(ctx *canvas.Context, s Stamp, pageH float64) {
 	if len(s.Data) > 0 {
 		img, _, err := decodeImageData(s.Data)
 		if err == nil {
-			img = stampImageWithTransparentWhite(img)
+			if r.decodeImages {
-			ctx.Push()
+				img = imagePixelSource(img)
-			ctx.Translate(x, screenY)
+			}
-			ctx.Scale(w/float64(img.Bounds().Dx()), h/float64(img.Bounds().Dy()))
+			r.renderStampImage(ctx, stampImageWithTransparentWhite(img), s, pageH)
-			ctx.DrawImage(0, 0, img, canvas.DPMM(1.0))
-			ctx.Pop()
 			return
 		}
 	}
 }
 
+// renderOFDStampImage 渲染OFD印章图像
+// 入参: data OFD印章数据
+// 返回: image.Image 印章图像
+func (r *Renderer) renderOFDStampImage(data []byte) image.Image {
+	reader, err := NewReader(bytes.NewReader(data), int64(len(data)))
+	if err != nil {
+		return nil
+	}
+	defer reader.Close()
+	doc, err := reader.Doc()
+	if err != nil {
+		return nil
+	}
+	renderer := r.childRenderer(reader)
+	renderer.decodeImages = true
+	for _, pageRef := range doc.Pages.Page {
+		content, err := reader.PageContent(pageRef)
+		if err != nil {
+			continue
+		}
+		sealBox, err := renderer.GetPageBox(content)
+		if err != nil {
+			continue
+		}
+		c := canvas.New(sealBox.W, sealBox.H)
+		if err := renderer.renderPageToContext(canvas.NewContext(c), content, false); err != nil {
+			continue
+		}
+		return rasterizer.Draw(c, canvas.DPMM(r.DPI/25.4), canvas.DefaultColorSpace)
+	}
+	return nil
+}
+
+// renderStampImage 渲染印章图像
+// 入参: ctx 画布上下文, img 印章图像, s 印章对象, pageH 页面高度
+func (r *Renderer) renderStampImage(ctx *canvas.Context, img image.Image, s Stamp, pageH float64) {
+	box := s.Box
+	if s.Clip != nil {
+		img = clipStampImage(img, box, *s.Clip)
+		box.X += s.Clip.X
+		box.Y += s.Clip.Y
+		box.W = s.Clip.W
+		box.H = s.Clip.H
+	}
+	ctx.Push()
+	ctx.Translate(box.X, pageH-(box.Y+box.H))
+	ctx.Scale(box.W/float64(img.Bounds().Dx()), box.H/float64(img.Bounds().Dy()))
+	ctx.DrawImage(0, 0, img, canvas.DPMM(1.0))
+	ctx.Pop()
+}
+
+// clipStampImage 裁剪印章图像
+// 入参: img 印章图像, box 印章区域, clip 裁剪区域
+// 返回: image.Image 裁剪后的印章图像
+func clipStampImage(img image.Image, box, clip Box) image.Image {
+	bounds := img.Bounds()
+	x0 := int(math.Floor(clip.X / box.W * float64(bounds.Dx())))
+	y0 := int(math.Floor(clip.Y / box.H * float64(bounds.Dy())))
+	x1 := int(math.Ceil((clip.X + clip.W) / box.W * float64(bounds.Dx())))
+	y1 := int(math.Ceil((clip.Y + clip.H) / box.H * float64(bounds.Dy())))
+	out := image.NewNRGBA(image.Rect(0, 0, x1-x0, y1-y0))
+	draw.Draw(out, out.Bounds(), img, image.Pt(bounds.Min.X+x0, bounds.Min.Y+y0), draw.Src)
+	return out
+}
+
 // stampImageWithTransparentWhite 处理印章图片白色底色
 // 入参: img 印章图片对象
 // 返回: image.Image 处理后的印章图片对象

ofdgo_renderer_text.go

@@ -24,8 +24,8 @@ import (
 const ptPerMM = 72.0 / 25.4
 
 // renderText 渲染文本
-// 入参: ctx 画布上下文, obj 文本对象, pageH 页面高度, defaultFill 默认填充色, defaultStroke 默认描边色, parentCTM 父级CTM, boundaryInCTM 边界是否参与父级CTM
+// 入参: ctx 画布上下文, obj 文本对象, pageH 页面高度, defaultFill 默认填充色, defaultStroke 默认描边色, parentCTM 父级CTM, boundaryInCTM 边界是否参与父级CTM, parentClip 父级裁剪路径
-func (r *Renderer) renderText(ctx *canvas.Context, obj TextObject, pageH float64, defaultFill, defaultStroke color.Color, parentCTM *Matrix, boundaryInCTM bool) {
+func (r *Renderer) renderText(ctx *canvas.Context, obj TextObject, pageH float64, defaultFill, defaultStroke color.Color, parentCTM *Matrix, boundaryInCTM bool, parentClip *canvas.Path) {
 	if obj.Visible != nil && !*obj.Visible {
 		return
 	}
@@ -41,6 +41,7 @@ func (r *Renderer) renderText(ctx *canvas.Context, obj TextObject, pageH float64
 	if parentCTM != nil {
 		ctm = parentCTM.Multiply(ctm)
 	}
+	clipPath := intersectClipPath(parentClip, r.buildClipPath(obj.Clips, pageH, bx, by, ctm))
 	var dp *DrawParam
 	if obj.DrawParam != "" {
 		dp = r.getDrawParam(obj.DrawParam, nil)
@@ -115,6 +116,7 @@ func (r *Renderer) renderText(ctx *canvas.Context, obj TextObject, pageH float64
 	}
 	ff := r.loadFont(fontID)
 	if ff == nil {
+		ctx.Pop()
 		return
 	}
 	face := ff.Face(sizePt, fillPaint, fontStyle, canvas.FontNormal)
@@ -134,7 +136,7 @@ func (r *Renderer) renderText(ctx *canvas.Context, obj TextObject, pageH float64
 		}
 		dxs, dys := parseFloats(tc.DeltaX), parseFloats(tc.DeltaY)
 		xs, ys := parseFloats(tc.X), parseFloats(tc.Y)
-		drawAsPath := embeddedFont || textCodePositioned(tc, xs, ys)
+		drawAsPath := embeddedFont || textCodePositioned(tc, xs, ys) || clipPath != nil
 		cx, cy := 0.0, 0.0
 		if len(xs) > 0 {
 			cx = xs[0]
@@ -144,13 +146,21 @@ func (r *Renderer) renderText(ctx *canvas.Context, obj TextObject, pageH float64
 		}
 		for i, glyph := range glyphs {
 			str := glyph.Text
+			drawAsGlyphPath := drawAsPath || glyph.GlyphID >= 0
+			var glyphPath *canvas.Path
+			var glyphWidth float64
+			if drawAsGlyphPath {
+				glyphPath, glyphWidth = r.cachedTextGlyphPath(face, glyph)
+			} else {
+				glyphWidth = textGlyphWidth(face, glyph)
+			}
 			if i < len(xs) {
 				cx = xs[i]
 			} else if i > 0 {
 				if dx, ok := textDelta(dxs, i-1); ok {
 					cx += dx
 				} else if len(dys) == 0 {
-					cx += textGlyphWidth(face, glyph) * hScale
+					cx += glyphWidth * hScale
 				}
 			}
 			if i < len(ys) {
@@ -169,7 +179,7 @@ func (r *Renderer) renderText(ctx *canvas.Context, obj TextObject, pageH float64
 				tx, ty := ctm.Transform(cx, cy)
 				canvasX, canvasY = tx+bx, pageH-(ty+by)
 			}
-			textWidth := textGlyphWidth(face, glyph) * hScale
+			textWidth := glyphWidth * hScale
 			glyphFillPaint := fillPaint
 			if useGlyphFillPaint {
 				glyphFillPaint = parseFillPaint(fillColorNode, bx, by, pageH, canvasX, canvasY)
@@ -177,22 +187,47 @@ func (r *Renderer) renderText(ctx *canvas.Context, obj TextObject, pageH float64
 			advanceLimit := textGlyphAdvanceLimit(dxs, dys, xs, i, len(glyphs), cx)
 			if glyphFillPaint != nil {
 				ctx.SetFill(glyphFillPaint)
-				drawGlyph := func(x, y float64) {
+				if clipPath != nil {
-					if drawAsPath || glyph.GlyphID >= 0 {
-						path, width := textGlyphPath(face, glyph)
 					scaleX := hScale
-						if advanceLimit > 0 && width*scaleX > advanceLimit {
+					if advanceLimit > 0 && glyphWidth*scaleX > advanceLimit {
-							scaleX = advanceLimit / width
+						scaleX = advanceLimit / glyphWidth
 					}
-						textWidth = width * scaleX
+					textWidth = glyphWidth * scaleX
+					textTransform := canvas.Identity.Translate(canvasX, canvasY)
+					if useTextMatrix {
+						textTransform = textTransform.Mul(textMatrix(ctm))
+					}
+					glyphPath = applyClipPath(glyphPath.Copy().Transform(textTransform.Scale(scaleX, 1)), clipPath)
+					ctx.DrawPath(0, 0, glyphPath)
+					if hasUnderline {
+						uw := sizeMM * 0.05
+						off := sizeMM * 0.1
+						underline := &canvas.Path{}
+						underline.MoveTo(0, -off)
+						underline.LineTo(textWidth, -off)
+						underline = underline.Stroke(uw, canvas.ButtCap, canvas.MiterJoin, canvas.Tolerance)
+						underline = applyClipPath(underline.Transform(textTransform), clipPath)
+						ctx.SetFillColor(fillColor)
+						ctx.SetStrokeColor(canvas.Transparent)
+						ctx.DrawPath(0, 0, underline)
+					}
+					continue
+				}
+				drawGlyph := func(x, y float64) {
+					if drawAsGlyphPath {
+						scaleX := hScale
+						if advanceLimit > 0 && glyphWidth*scaleX > advanceLimit {
+							scaleX = advanceLimit / glyphWidth
+						}
+						textWidth = glyphWidth * scaleX
 						if scaleX != 1 {
 							ctx.Push()
 							ctx.Translate(x, y)
 							ctx.Scale(scaleX, 1)
-							ctx.DrawPath(0, 0, path)
+							ctx.DrawPath(0, 0, glyphPath)
 							ctx.Pop()
 						} else {
-							ctx.DrawPath(x, y, path)
+							ctx.DrawPath(x, y, glyphPath)
 						}
 					} else {
 						scaled := hScale != 1

ofdgo_res.go

@@ -104,4 +104,5 @@ type CompositeGraphicUnit struct {
 	ImageObject          []ImageObject          `xml:"ImageObject"`
 	CompositeGraphicUnit []CompositeGraphicUnit `xml:"CompositeGraphicUnit"`
 	Clips                *Clips                 `xml:"Clips"`
+	Actions              []Action               `xml:"Actions>Action"`
 }

ofdgo_sign.go

@@ -20,7 +20,6 @@ import (
 	"encoding/binary"
 	"encoding/xml"
 	"fmt"
-	"strconv"
 	"strings"
 )
 
@@ -28,14 +27,16 @@ import (
 type SignType string
 
 const (
+	// SignTypeSeal 印章签名
 	SignTypeSeal SignType = "Seal"
+	// SignTypeSign 数字签名
 	SignTypeSign SignType = "Sign"
 )
 
 // Signatures 签名列表
 type Signatures struct {
 	XMLName   xml.Name    `xml:"Signatures"`
-	MaxSignId string      `xml:"MaxSignId"`
+	MaxSignID string      `xml:"MaxSignId"`
 	List      []Signature `xml:"Signature"`
 }
 
@@ -80,6 +81,7 @@ type SignatureStamp struct {
 	ID       string `xml:"ID,attr"`
 	PageRef  string `xml:"PageRef,attr"`
 	Boundary string `xml:"Boundary,attr"`
+	Clip     string `xml:"Clip,attr"`
 }
 
 // SignatureStampPosition 签名外观位置信息
@@ -89,6 +91,8 @@ type SignatureStampPosition struct {
 	PageID   string
 	Boundary string
 	Box      Box
+	Clip     string
+	ClipBox  *Box
 }
 
 // SignatureReferences 签名保护文件列表
@@ -122,12 +126,22 @@ func (r *Reader) SignatureStampPositions(stamps []SignatureStamp) ([]SignatureSt
 		if err != nil {
 			return nil, err
 		}
+		var clipBox *Box
+		if stamp.Clip != "" {
+			clip, err := parseSignatureStampBox(stamp.Clip)
+			if err != nil {
+				return nil, err
+			}
+			clipBox = &clip
+		}
 		positions = append(positions, SignatureStampPosition{
 			ID:       stamp.ID,
 			Page:     page,
 			PageID:   stamp.PageRef,
 			Boundary: stamp.Boundary,
 			Box:      box,
+			Clip:     stamp.Clip,
+			ClipBox:  clipBox,
 		})
 	}
 	return positions, nil
@@ -137,27 +151,11 @@ func (r *Reader) SignatureStampPositions(stamps []SignatureStamp) ([]SignatureSt
 // 入参: s 区域字符串
 // 返回: Box 矩形对象, error 错误信息
 func parseSignatureStampBox(s string) (Box, error) {
-	parts := strings.Fields(s)
+	box, err := ParseBox(s)
-	if len(parts) != 4 {
-		return Box{}, fmt.Errorf("invalid signature stamp boundary: %s", s)
-	}
-	x, err := strconv.ParseFloat(parts[0], 64)
 	if err != nil {
-		return Box{}, fmt.Errorf("invalid signature stamp boundary: %s", s)
+		return Box{}, fmt.Errorf("invalid signature stamp box: %s", s)
 	}
-	y, err := strconv.ParseFloat(parts[1], 64)
+	return box, nil
-	if err != nil {
-		return Box{}, fmt.Errorf("invalid signature stamp boundary: %s", s)
-	}
-	w, err := strconv.ParseFloat(parts[2], 64)
-	if err != nil {
-		return Box{}, fmt.Errorf("invalid signature stamp boundary: %s", s)
-	}
-	h, err := strconv.ParseFloat(parts[3], 64)
-	if err != nil {
-		return Box{}, fmt.Errorf("invalid signature stamp boundary: %s", s)
-	}
-	return Box{X: x, Y: y, W: w, H: h}, nil
 }
 
 // parseSignatures 解析签名文件
@@ -212,8 +210,19 @@ func (r *Reader) parseSignatures(doc *Document) error {
 			}
 			for _, annot := range sigFile.SignedInfo.StampAnnot {
 				pageID := annot.PageRef
-				bbox, _ := ParseBox(annot.Boundary)
+				bbox, err := parseSignatureStampBox(annot.Boundary)
-				r.addStamp(pageID, bbox, sealType, sealData)
+				if err != nil {
+					continue
+				}
+				var clipBox *Box
+				if annot.Clip != "" {
+					clip, err := parseSignatureStampBox(annot.Clip)
+					if err != nil {
+						continue
+					}
+					clipBox = &clip
+				}
+				r.addStamp(pageID, bbox, clipBox, sealType, sealData)
 			}
 		}(sigRef)
 	}
@@ -415,18 +424,20 @@ func probeImageMedia(data []byte) (string, []byte) {
 // Stamp 印章信息结构
 type Stamp struct {
 	Box  Box
+	Clip *Box
 	Type string
 	Data []byte
 }
 
 // addStamp 添加印章到页面
-// 入参: pageID 页面ID, box 印章区域, sType 印章类型, data 印章数据
+// 入参: pageID 页面ID, box 印章区域, clip 裁剪区域, sType 印章类型, data 印章数据
-func (r *Reader) addStamp(pageID string, box Box, sType string, data []byte) {
+func (r *Reader) addStamp(pageID string, box Box, clip *Box, sType string, data []byte) {
 	if r.Stamps == nil {
 		r.Stamps = make(map[string][]Stamp)
 	}
 	r.Stamps[pageID] = append(r.Stamps[pageID], Stamp{
 		Box:  box,
+		Clip: clip,
 		Type: sType,
 		Data: data,
 	})

ofdgo_sign_gbt.go

@@ -66,8 +66,8 @@ type gbtSignerInfo struct {
 // 入参: method 签名算法, digestMethod 摘要算法, signedValue 签名值, signedData 被签名原文, options 验证选项
 // 返回: *digitalVerifyResult 验证结果, error 错误信息
 func verifyDigitalSignature(method, digestMethod string, signedValue, signedData []byte, options *signatureVerifyOptions) (*digitalVerifyResult, error) {
-	if isGBT35275SignedValue(signedValue) {
+	if value, ok := normalizeGBT35275SignedValue(signedValue); ok {
-		return verifyGBT35275SignedData(signedValue, signedData, options)
+		return verifyGBT35275SignedData(value, signedData, options)
 	}
 	if isSM2SignatureMethod(method) {
 		return verifyRawDigitalSignature(signedValue, signedData, options)
@@ -204,27 +204,150 @@ func verifyGBT35275SignedData(signedValue, signedData []byte, options *signature
 	return result, nil
 }
 
-// isGBT35275SignedValue 判断签名值是否为GB/T 35275 SignedData
+// normalizeGBT35275SignedValue 规范化GB/T 35275 SignedData编码
 // 入参: data 签名值数据
-// 返回: bool 是否为SignedData
+// 返回: []byte 定长编码数据, bool 是否为SignedData
-func isGBT35275SignedValue(data []byte) bool {
+func normalizeGBT35275SignedValue(data []byte) ([]byte, bool) {
+	if contentType, ok := gbtContentType(data); ok {
+		return data, contentType == signContentSignedData
+	}
+	der, err := berToDefinite(data)
+	if err != nil {
+		return nil, false
+	}
+	contentType, ok := gbtContentType(der)
+	if !ok || contentType != signContentSignedData {
+		return nil, false
+	}
+	return der, true
+}
+
+// gbtContentType 读取GB/T 35275内容类型
+// 入参: data DER编码数据
+// 返回: string 内容类型, bool 是否完成解析
+func gbtContentType(data []byte) (string, bool) {
 	var root asn1.RawValue
 	rest, err := asn1.Unmarshal(data, &root)
 	if err != nil || len(rest) != 0 || root.Tag != signASN1Sequence {
-		return false
+		return "", false
 	}
 	items, ok := asn1Children(root.Bytes)
-	if !ok || len(items) < 2 {
+	if !ok || len(items) == 0 {
-		return false
+		return "", false
+	}
+	if items[0].Tag != asn1.TagOID {
+		return "", true
 	}
 	oid, err := asn1OIDString(items[0])
-	return err == nil && oid == signContentSignedData
+	return oid, err == nil
+}
+
+// berToDefinite 将BER不定长编码转换为定长编码
+// 入参: data BER编码数据
+// 返回: []byte 定长编码数据, error 错误信息
+func berToDefinite(data []byte) ([]byte, error) {
+	out, n, err := berValueToDefinite(data)
+	if err != nil {
+		return nil, err
+	}
+	if n != len(data) {
+		return nil, fmt.Errorf("invalid BER trailing data")
+	}
+	return out, nil
+}
+
+// berValueToDefinite 转换单个BER编码值
+// 入参: data BER编码数据
+// 返回: []byte 定长编码数据, int 已读取长度, error 错误信息
+func berValueToDefinite(data []byte) ([]byte, int, error) {
+	if len(data) < 2 {
+		return nil, 0, fmt.Errorf("invalid BER value")
+	}
+	pos := 1
+	if data[0]&0x1f == 0x1f {
+		for pos < len(data) && data[pos]&0x80 != 0 {
+			pos++
+		}
+		pos++
+	}
+	if pos >= len(data) {
+		return nil, 0, fmt.Errorf("invalid BER tag")
+	}
+	tag := data[:pos]
+	firstLength := data[pos]
+	pos++
+	if firstLength == 0x80 {
+		if tag[0]&0x20 == 0 {
+			return nil, 0, fmt.Errorf("invalid BER indefinite primitive")
+		}
+		var content []byte
+		for {
+			if len(data)-pos < 2 {
+				return nil, 0, fmt.Errorf("invalid BER unterminated value")
+			}
+			if data[pos] == 0 && data[pos+1] == 0 {
+				pos += 2
+				break
+			}
+			child, n, err := berValueToDefinite(data[pos:])
+			if err != nil {
+				return nil, 0, err
+			}
+			content = append(content, child...)
+			pos += n
+		}
+		return wrapBERValue(tag, content), pos, nil
+	}
+	length := uint64(firstLength)
+	if firstLength&0x80 != 0 {
+		n := int(firstLength & 0x7f)
+		if n == 0 || n > 8 || len(data)-pos < n {
+			return nil, 0, fmt.Errorf("invalid BER length")
+		}
+		length = 0
+		for _, b := range data[pos : pos+n] {
+			length = length<<8 | uint64(b)
+		}
+		pos += n
+	}
+	if length > uint64(len(data)-pos) {
+		return nil, 0, fmt.Errorf("invalid BER truncated value")
+	}
+	end := pos + int(length)
+	content := append([]byte(nil), data[pos:end]...)
+	if tag[0]&0x20 != 0 {
+		content = content[:0]
+		for pos < end {
+			child, n, err := berValueToDefinite(data[pos:end])
+			if err != nil {
+				return nil, 0, err
+			}
+			content = append(content, child...)
+			pos += n
+		}
+	}
+	return wrapBERValue(tag, content), end, nil
+}
+
+// wrapBERValue 包装定长BER编码值
+// 入参: tag 标签, content 内容
+// 返回: []byte 定长编码数据
+func wrapBERValue(tag, content []byte) []byte {
+	out := make([]byte, 0, len(tag)+len(content)+9)
+	out = append(out, tag...)
+	out = append(out, asn1LengthBytes(len(content))...)
+	return append(out, content...)
 }
 
 // parseGBT35275SignedData 解析GB/T 35275 SignedData
 // 入参: data 签名值数据
 // 返回: *gbtSignedData SignedData结构, error 错误信息
 func parseGBT35275SignedData(data []byte) (*gbtSignedData, error) {
+	var ok bool
+	data, ok = normalizeGBT35275SignedValue(data)
+	if !ok {
+		return nil, fmt.Errorf("invalid signed data content type")
+	}
 	contentType, content, ok, err := parseGBTContentInfoBytes(data)
 	if err != nil {
 		return nil, err

ofdgo_sign_ses.go

@@ -20,6 +20,7 @@ import (
 	"fmt"
 	"math/big"
 	"strings"
+	"time"
 )
 
 const (
@@ -42,6 +43,7 @@ type sesSignature struct {
 	SignAlg   string
 	Signature []byte
 	DataHash  []byte
+	Time      time.Time
 	Seal      *sesSeal
 }
 
@@ -55,6 +57,7 @@ type sesSeal struct {
 	PicType   string
 	PicData   []byte
 	CertList  sesCertList
+	Info      SignatureSealInfo
 }
 
 // sesCertList SES印章证书列表
@@ -82,6 +85,8 @@ type sesVerifyResult struct {
 	SealRaw       []byte
 	Certs         [][]byte
 	SealType      string
+	SealInfo      SignatureSealInfo
+	SignatureTime time.Time
 }
 
 // parseSESSignature 解析SES签章值
@@ -119,13 +124,21 @@ func parseSESSignature(data []byte) (*sesSignature, error) {
 		return nil, err
 	}
 	tbsItems, ok := asn1Children(items[0].Bytes)
-	if !ok || len(tbsItems) < 5 {
+	if !ok || len(tbsItems) < 5 || len(tbsItems) > 6 {
 		return nil, fmt.Errorf("invalid ses toSign")
 	}
 	seal, err := parseSESSeal(tbsItems[1])
 	if err != nil {
 		return nil, err
 	}
+	version, err := asn1Integer(tbsItems[0])
+	if err != nil || version != seal.Info.Version {
+		return nil, fmt.Errorf("invalid ses version")
+	}
+	signatureTime, err := asn1Time(tbsItems[2])
+	if err != nil {
+		return nil, err
+	}
 	dataHash, err := asn1BitOrOctetBytes(tbsItems[3])
 	if err != nil {
 		return nil, err
@@ -136,6 +149,7 @@ func parseSESSignature(data []byte) (*sesSignature, error) {
 		SignAlg:   alg,
 		Signature: signature,
 		DataHash:  dataHash,
+		Time:      signatureTime,
 		Seal:      seal,
 	}, nil
 }
@@ -156,6 +170,11 @@ func parseSESSignatureV1(items []asn1.RawValue) (*sesSignature, error) {
 	if err != nil {
 		return nil, err
 	}
+	version, err := asn1Integer(tbsItems[0])
+	if err != nil || version != seal.Info.Version {
+		return nil, fmt.Errorf("invalid ses version")
+	}
+	signatureTime := parseSESSignatureTimeV1(tbsItems[2])
 	dataHash, err := asn1BitOrOctetBytes(tbsItems[3])
 	if err != nil {
 		return nil, err
@@ -174,10 +193,31 @@ func parseSESSignatureV1(items []asn1.RawValue) (*sesSignature, error) {
 		SignAlg:   alg,
 		Signature: signature,
 		DataHash:  dataHash,
+		Time:      signatureTime,
 		Seal:      seal,
 	}, nil
 }
 
+// parseSESSignatureTimeV1 解析SES V1签名时间
+// 入参: raw 签名时间或时间戳数据
+// 返回: time.Time 签名时间
+func parseSESSignatureTimeV1(raw asn1.RawValue) time.Time {
+	data, err := asn1BitOrOctetBytes(raw)
+	if err != nil {
+		return time.Time{}
+	}
+	if t := parseSignatureDateTime(string(data)); !t.IsZero() {
+		return t
+	}
+	var value asn1.RawValue
+	rest, err := asn1.Unmarshal(data, &value)
+	if err != nil || len(rest) != 0 {
+		return time.Time{}
+	}
+	t, _ := asn1Time(value)
+	return t
+}
+
 // verifySESSignature 验证SES签章值
 // 入参: data 签章值数据, signedData 被签名数据原文, options 验证选项
 // 返回: *sesVerifyResult 验证结果, error 错误信息
@@ -198,6 +238,8 @@ func verifySESSignature(data, signedData []byte, options *signatureVerifyOptions
 	result.Certs = append(result.Certs, sig.Seal.CertList.Certs...)
 	result.Certs = append(result.Certs, options.SignCerts...)
 	result.SealType = sig.Seal.PicType
+	result.SealInfo = sig.Seal.Info
+	result.SignatureTime = sig.Time
 	result.DataHashOK = bytes.Equal(sig.DataHash, signSM3(signedData))
 	signPub, err := parseSM2PublicKeyFromCert(sig.Cert)
 	if err != nil {
@@ -243,11 +285,7 @@ func parseSESSeal(raw asn1.RawValue) (*sesSeal, error) {
 	if !ok || len(infoItems) < 4 || len(infoItems) > 5 {
 		return nil, fmt.Errorf("invalid ses seal info")
 	}
-	version, err := parseSESHeaderVersion(infoItems[0])
+	info, certList, err := parseSESSealInfo(infoItems)
-	if err != nil {
-		return nil, err
-	}
-	certList, err := parseSESCertList(infoItems[2], version)
 	if err != nil {
 		return nil, err
 	}
@@ -264,6 +302,7 @@ func parseSESSeal(raw asn1.RawValue) (*sesSeal, error) {
 		PicType:   picType,
 		PicData:   picData,
 		CertList:  certList,
+		Info:      info,
 	}, nil
 }
 
@@ -291,7 +330,7 @@ func parseSESSealV1(raw asn1.RawValue, items []asn1.RawValue) (*sesSeal, error)
 	if err != nil {
 		return nil, err
 	}
-	certList, err := parseSESCertListV1(infoItems[2])
+	info, certList, err := parseSESSealInfo(infoItems)
 	if err != nil {
 		return nil, err
 	}
@@ -309,43 +348,92 @@ func parseSESSealV1(raw asn1.RawValue, items []asn1.RawValue) (*sesSeal, error)
 		PicType:   picType,
 		PicData:   picData,
 		CertList:  certList,
+		Info:      info,
 	}, nil
 }
 
-// parseSESHeaderVersion 解析印章头版本
+// parseSESSealInfo 解析电子印章信息
-// 入参: raw 印章头信息
+// 入参: items 印章信息ASN.1子元素
-// 返回: int 版本号, error 错误信息
+// 返回: SignatureSealInfo 印章信息, sesCertList 证书列表, error 错误信息
-func parseSESHeaderVersion(raw asn1.RawValue) (int, error) {
+func parseSESSealInfo(items []asn1.RawValue) (SignatureSealInfo, sesCertList, error) {
-	items, ok := asn1Children(raw.Bytes)
+	if len(items) < 4 {
-	if !ok || len(items) < 2 {
+		return SignatureSealInfo{}, sesCertList{}, fmt.Errorf("invalid ses seal info")
-		return 0, fmt.Errorf("invalid ses header")
 	}
-	return asn1Integer(items[1])
+	header, ok := asn1Children(items[0].Bytes)
+	if !ok || len(header) != 3 {
+		return SignatureSealInfo{}, sesCertList{}, fmt.Errorf("invalid ses header")
+	}
+	if asn1String(header[0]) != "ES" {
+		return SignatureSealInfo{}, sesCertList{}, fmt.Errorf("invalid ses header")
+	}
+	version, err := asn1Integer(header[1])
+	if err != nil {
+		return SignatureSealInfo{}, sesCertList{}, err
+	}
+	property, ok := asn1Children(items[2].Bytes)
+	if !ok {
+		return SignatureSealInfo{}, sesCertList{}, fmt.Errorf("invalid ses property")
+	}
+	certIndex := 2
+	timeIndex := 3
+	if version >= 4 {
+		certIndex = 3
+		timeIndex = 4
+	}
+	if len(property) != timeIndex+3 {
+		return SignatureSealInfo{}, sesCertList{}, fmt.Errorf("invalid ses property")
+	}
+	typeValue, err := asn1Integer(property[0])
+	if err != nil {
+		return SignatureSealInfo{}, sesCertList{}, err
+	}
+	certList, err := parseSESCertList(property, version, certIndex)
+	if err != nil {
+		return SignatureSealInfo{}, sesCertList{}, err
+	}
+	createTime, err := asn1Time(property[timeIndex])
+	if err != nil {
+		return SignatureSealInfo{}, sesCertList{}, err
+	}
+	validStart, err := asn1Time(property[timeIndex+1])
+	if err != nil {
+		return SignatureSealInfo{}, sesCertList{}, err
+	}
+	validEnd, err := asn1Time(property[timeIndex+2])
+	if err != nil {
+		return SignatureSealInfo{}, sesCertList{}, err
+	}
+	return SignatureSealInfo{
+		Version:    version,
+		ID:         strings.TrimSpace(asn1String(items[1])),
+		VendorID:   strings.TrimSpace(asn1String(header[2])),
+		Type:       typeValue,
+		Name:       strings.TrimSpace(asn1String(property[1])),
+		CreateTime: createTime,
+		ValidStart: validStart,
+		ValidEnd:   validEnd,
+	}, certList, nil
 }
 
 // parseSESCertList 解析印章证书列表
-// 入参: raw 印章属性信息, version 印章版本
+// 入参: property 印章属性, version 印章版本, certIndex 证书列表位置
 // 返回: sesCertList 证书列表, error 错误信息
-func parseSESCertList(raw asn1.RawValue, version int) (sesCertList, error) {
+func parseSESCertList(property []asn1.RawValue, version, certIndex int) (sesCertList, error) {
-	items, ok := asn1Children(raw.Bytes)
+	if version == 1 {
-	if !ok || len(items) < 3 {
+		return parseSESCertListV1(property[certIndex])
-		return sesCertList{}, fmt.Errorf("invalid ses property")
 	}
 	if version < 4 {
-		return parseSESCertInfoList(items[2])
+		return parseSESCertInfoList(property[certIndex])
 	}
-	if len(items) < 4 {
+	listType, err := asn1Integer(property[certIndex-1])
-		return sesCertList{}, fmt.Errorf("invalid ses cert list")
-	}
-	listType, err := asn1Integer(items[2])
 	if err != nil {
 		return sesCertList{}, err
 	}
 	switch listType {
 	case 1:
-		return parseSESCertInfoList(items[3])
+		return parseSESCertInfoList(property[certIndex])
 	case 2:
-		return parseSESCertDigestList(items[3])
+		return parseSESCertDigestList(property[certIndex])
 	default:
 		return sesCertList{}, fmt.Errorf("unsupported ses cert list type")
 	}
@@ -396,12 +484,12 @@ func parseSESCertDigestList(raw asn1.RawValue) (sesCertList, error) {
 	list := sesCertList{Digests: make([]sesCertDigest, 0, len(items))}
 	for _, item := range items {
 		fields, ok := asn1Children(item.Bytes)
-		if !ok || len(fields) < 2 {
+		if !ok || len(fields) != 2 {
 			return sesCertList{}, fmt.Errorf("invalid ses cert digest")
 		}
-		method, err := parseGBTAlgorithm(fields[0])
+		method := strings.TrimSpace(asn1String(fields[0]))
-		if err != nil {
+		if method == "" {
-			return sesCertList{}, err
+			return sesCertList{}, fmt.Errorf("invalid ses cert digest")
 		}
 		digest, err := asn1OctetString(fields[1])
 		if err != nil {

ofdgo_sign_sm2.go

@@ -15,7 +15,6 @@
 package ofdgo
 
 import (
-	"crypto/elliptic"
 	"encoding/asn1"
 	"encoding/binary"
 	"math/big"
@@ -31,17 +30,32 @@ type sm2PublicKey struct {
 	Y *big.Int
 }
 
+// sm2Curve SM2椭圆曲线
+type sm2Curve struct {
+	P  *big.Int
+	N  *big.Int
+	B  *big.Int
+	Gx *big.Int
+	Gy *big.Int
+}
+
+// sm2Point SM2雅可比坐标点
+type sm2Point struct {
+	X *big.Int
+	Y *big.Int
+	Z *big.Int
+}
+
 // newSM2P256 创建SM2椭圆曲线
-// 返回: elliptic.Curve SM2椭圆曲线
+// 返回: *sm2Curve SM2椭圆曲线
-func newSM2P256() elliptic.Curve {
+func newSM2P256() *sm2Curve {
-	c := &elliptic.CurveParams{Name: "SM2-P-256"}
+	return &sm2Curve{
-	c.P = sm2Big("FFFFFFFEFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF00000000FFFFFFFFFFFFFFFF")
+		P:  sm2Big("FFFFFFFEFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF00000000FFFFFFFFFFFFFFFF"),
-	c.N = sm2Big("FFFFFFFEFFFFFFFFFFFFFFFFFFFFFFFF7203DF6B21C6052B53BBF40939D54123")
+		N:  sm2Big("FFFFFFFEFFFFFFFFFFFFFFFFFFFFFFFF7203DF6B21C6052B53BBF40939D54123"),
-	c.B = sm2Big("28E9FA9E9D9F5E344D5A9E4BCF6509A7F39789F515AB8F92DDBCBD414D940E93")
+		B:  sm2Big("28E9FA9E9D9F5E344D5A9E4BCF6509A7F39789F515AB8F92DDBCBD414D940E93"),
-	c.Gx = sm2Big("32C4AE2C1F1981195F9904466A39C9948FE30BBFF2660BE1715A4589334C74C7")
+		Gx: sm2Big("32C4AE2C1F1981195F9904466A39C9948FE30BBFF2660BE1715A4589334C74C7"),
-	c.Gy = sm2Big("BC3736A2F4F6779C59BDCEE36B692153D0A9877CC62A474002DF32E52139F0A0")
+		Gy: sm2Big("BC3736A2F4F6779C59BDCEE36B692153D0A9877CC62A474002DF32E52139F0A0"),
-	c.BitSize = 256
+	}
-	return c
 }
 
 // sm2Big 解析SM2大整数常量
@@ -85,11 +99,11 @@ func parseSM2Signature(sig []byte) (*big.Int, *big.Int, bool) {
 // 入参: pub 公钥, userID 用户标识, msg 原文, r R值, s S值
 // 返回: bool 是否验证通过
 func sm2Verify(pub sm2PublicKey, userID, msg []byte, r, s *big.Int) bool {
-	n := sm2P256.Params().N
+	n := sm2P256.N
 	if r.Sign() <= 0 || s.Sign() <= 0 || r.Cmp(n) >= 0 || s.Cmp(n) >= 0 {
 		return false
 	}
-	if pub.X == nil || pub.Y == nil || !sm2P256.IsOnCurve(pub.X, pub.Y) {
+	if pub.X == nil || pub.Y == nil || !sm2P256.isOnCurve(pub.X, pub.Y) {
 		return false
 	}
 	e := new(big.Int).SetBytes(sm2MessageDigest(pub, userID, msg))
@@ -98,10 +112,8 @@ func sm2Verify(pub sm2PublicKey, userID, msg []byte, r, s *big.Int) bool {
 	if t.Sign() == 0 {
 		return false
 	}
-	x1, y1 := sm2P256.ScalarBaseMult(s.Bytes())
+	x, ok := sm2P256.combinedMult(pub.X, pub.Y, s, t)
-	x2, y2 := sm2P256.ScalarMult(pub.X, pub.Y, t.Bytes())
+	if !ok {
-	x, _ := sm2P256.Add(x1, y1, x2, y2)
-	if x == nil {
 		return false
 	}
 	v := new(big.Int).Add(e, x)
@@ -132,9 +144,9 @@ func sm2ZA(pub sm2PublicKey, userID []byte) []byte {
 	h.Write(entl[:])
 	h.Write(userID)
 	h.Write(sm2Fixed(sm2A()))
-	h.Write(sm2Fixed(sm2P256.Params().B))
+	h.Write(sm2Fixed(sm2P256.B))
-	h.Write(sm2Fixed(sm2P256.Params().Gx))
+	h.Write(sm2Fixed(sm2P256.Gx))
-	h.Write(sm2Fixed(sm2P256.Params().Gy))
+	h.Write(sm2Fixed(sm2P256.Gy))
 	h.Write(sm2Fixed(pub.X))
 	h.Write(sm2Fixed(pub.Y))
 	return h.Sum(nil)
@@ -143,7 +155,158 @@ func sm2ZA(pub sm2PublicKey, userID []byte) []byte {
 // sm2A 获取SM2曲线A参数
 // 返回: *big.Int 曲线A参数
 func sm2A() *big.Int {
-	return new(big.Int).Sub(sm2P256.Params().P, big.NewInt(3))
+	return new(big.Int).Sub(sm2P256.P, big.NewInt(3))
+}
+
+// isOnCurve 判断点是否位于SM2曲线
+// 入参: x X坐标, y Y坐标
+// 返回: bool 是否位于曲线
+func (c *sm2Curve) isOnCurve(x, y *big.Int) bool {
+	if x.Sign() < 0 || y.Sign() < 0 || x.Cmp(c.P) >= 0 || y.Cmp(c.P) >= 0 {
+		return false
+	}
+	left := c.fieldSquare(y)
+	right := c.fieldAdd(c.fieldSub(c.fieldMul(c.fieldSquare(x), x), c.fieldScale(x, 3)), c.B)
+	return left.Cmp(right) == 0
+}
+
+// combinedMult 计算sG+tP
+// 入参: x 公钥X坐标, y 公钥Y坐标, s 标量S, t 标量T
+// 返回: *big.Int 结果X坐标, bool 是否计算成功
+func (c *sm2Curve) combinedMult(x, y, s, t *big.Int) (*big.Int, bool) {
+	base := c.scalarMult(c.Gx, c.Gy, s.Bytes())
+	public := c.scalarMult(x, y, t.Bytes())
+	result := c.add(base, public)
+	affineX, _, ok := c.affine(result)
+	return affineX, ok
+}
+
+// scalarMult 计算椭圆曲线标量乘法
+// 入参: x 点X坐标, y 点Y坐标, scalar 标量
+// 返回: sm2Point 雅可比坐标点
+func (c *sm2Curve) scalarMult(x, y *big.Int, scalar []byte) sm2Point {
+	result := c.infinity()
+	point := sm2Point{X: new(big.Int).Set(x), Y: new(big.Int).Set(y), Z: big.NewInt(1)}
+	for _, value := range scalar {
+		for bit := 7; bit >= 0; bit-- {
+			result = c.double(result)
+			if value&(1<<uint(bit)) != 0 {
+				result = c.add(result, point)
+			}
+		}
+	}
+	return result
+}
+
+// add 计算椭圆曲线点加法
+// 入参: p 点P, q 点Q
+// 返回: sm2Point 结果点
+func (c *sm2Curve) add(p, q sm2Point) sm2Point {
+	if p.Z.Sign() == 0 {
+		return q
+	}
+	if q.Z.Sign() == 0 {
+		return p
+	}
+	z1z1 := c.fieldSquare(p.Z)
+	z2z2 := c.fieldSquare(q.Z)
+	u1 := c.fieldMul(p.X, z2z2)
+	u2 := c.fieldMul(q.X, z1z1)
+	s1 := c.fieldMul(p.Y, c.fieldMul(q.Z, z2z2))
+	s2 := c.fieldMul(q.Y, c.fieldMul(p.Z, z1z1))
+	if u1.Cmp(u2) == 0 {
+		if s1.Cmp(s2) != 0 {
+			return c.infinity()
+		}
+		return c.double(p)
+	}
+	h := c.fieldSub(u2, u1)
+	i := c.fieldSquare(c.fieldScale(h, 2))
+	j := c.fieldMul(h, i)
+	r := c.fieldScale(c.fieldSub(s2, s1), 2)
+	v := c.fieldMul(u1, i)
+	x := c.fieldSub(c.fieldSub(c.fieldSquare(r), j), c.fieldScale(v, 2))
+	y := c.fieldSub(c.fieldMul(r, c.fieldSub(v, x)), c.fieldScale(c.fieldMul(s1, j), 2))
+	z := c.fieldMul(c.fieldSub(c.fieldSub(c.fieldSquare(c.fieldAdd(p.Z, q.Z)), z1z1), z2z2), h)
+	return sm2Point{X: x, Y: y, Z: z}
+}
+
+// double 计算椭圆曲线点倍加
+// 入参: p 点P
+// 返回: sm2Point 结果点
+func (c *sm2Curve) double(p sm2Point) sm2Point {
+	if p.Z.Sign() == 0 || p.Y.Sign() == 0 {
+		return c.infinity()
+	}
+	delta := c.fieldSquare(p.Z)
+	gamma := c.fieldSquare(p.Y)
+	beta := c.fieldMul(p.X, gamma)
+	alpha := c.fieldScale(c.fieldMul(c.fieldSub(p.X, delta), c.fieldAdd(p.X, delta)), 3)
+	x := c.fieldSub(c.fieldSquare(alpha), c.fieldScale(beta, 8))
+	z := c.fieldSub(c.fieldSub(c.fieldSquare(c.fieldAdd(p.Y, p.Z)), gamma), delta)
+	y := c.fieldSub(c.fieldMul(alpha, c.fieldSub(c.fieldScale(beta, 4), x)), c.fieldScale(c.fieldSquare(gamma), 8))
+	return sm2Point{X: x, Y: y, Z: z}
+}
+
+// affine 将雅可比坐标转换为仿射坐标
+// 入参: p 雅可比坐标点
+// 返回: *big.Int X坐标, *big.Int Y坐标, bool 是否转换成功
+func (c *sm2Curve) affine(p sm2Point) (*big.Int, *big.Int, bool) {
+	if p.Z.Sign() == 0 {
+		return nil, nil, false
+	}
+	z := new(big.Int).ModInverse(p.Z, c.P)
+	if z == nil {
+		return nil, nil, false
+	}
+	z2 := c.fieldSquare(z)
+	x := c.fieldMul(p.X, z2)
+	y := c.fieldMul(p.Y, c.fieldMul(z2, z))
+	return x, y, true
+}
+
+// infinity 获取无穷远点
+// 返回: sm2Point 无穷远点
+func (c *sm2Curve) infinity() sm2Point {
+	return sm2Point{X: new(big.Int), Y: new(big.Int), Z: new(big.Int)}
+}
+
+// fieldAdd 计算有限域加法
+// 入参: x 左操作数, y 右操作数
+// 返回: *big.Int 计算结果
+func (c *sm2Curve) fieldAdd(x, y *big.Int) *big.Int {
+	value := new(big.Int).Add(x, y)
+	return value.Mod(value, c.P)
+}
+
+// fieldSub 计算有限域减法
+// 入参: x 左操作数, y 右操作数
+// 返回: *big.Int 计算结果
+func (c *sm2Curve) fieldSub(x, y *big.Int) *big.Int {
+	value := new(big.Int).Sub(x, y)
+	return value.Mod(value, c.P)
+}
+
+// fieldMul 计算有限域乘法
+// 入参: x 左操作数, y 右操作数
+// 返回: *big.Int 计算结果
+func (c *sm2Curve) fieldMul(x, y *big.Int) *big.Int {
+	value := new(big.Int).Mul(x, y)
+	return value.Mod(value, c.P)
+}
+
+// fieldSquare 计算有限域平方
+// 入参: x 操作数
+// 返回: *big.Int 计算结果
+func (c *sm2Curve) fieldSquare(x *big.Int) *big.Int {
+	return c.fieldMul(x, x)
+}
+
+// fieldScale 计算有限域整数倍
+// 入参: x 操作数, scale 倍数
+// 返回: *big.Int 计算结果
+func (c *sm2Curve) fieldScale(x *big.Int, scale int64) *big.Int {
+	return c.fieldMul(x, big.NewInt(scale))
 }
 
 // sm2Fixed 转换为SM2固定长度字节

ofdgo_sign_verify.go

@@ -18,6 +18,7 @@ import (
 	"bytes"
 	"crypto"
 	"crypto/ecdsa"
+	"crypto/md5"
 	"crypto/rsa"
 	"crypto/sha1"
 	"crypto/sha256"
@@ -37,7 +38,8 @@ import (
 )
 
 // SignatureVerifyReport 签名验证报告
-// Valid表示签名完整性及调用方指定的证书策略均通过
+// Valid表示签名完整性、签名时间语义及调用方指定的证书策略均通过
+// SealCertTimeOK仅提供制章证书在签名时间的状态信息, 不参与Valid判断
 type SignatureVerifyReport struct {
 	ID                   string
 	BaseLoc              string
@@ -46,9 +48,11 @@ type SignatureVerifyReport struct {
 	Signer               string
 	SignCert             SignatureCertInfo
 	SealCert             SignatureCertInfo
+	SealInfo             SignatureSealInfo
 	SealType             string
 	SignatureMethod      string
 	SignatureDateTime    string
+	SignatureTime        time.Time
 	DigestMethod         string
 	References           []SignatureReferenceVerify
 	Stamps               []SignatureStamp
@@ -60,6 +64,12 @@ type SignatureVerifyReport struct {
 	SealOK               bool
 	SealMatchOK          bool
 	CertOK               bool
+	SignatureTimeChecked bool
+	SignatureTimeOK      bool
+	SealCertTimeChecked  bool
+	SealCertTimeOK       bool
+	SealTimeChecked      bool
+	SealTimeOK           bool
 	CertTimeChecked      bool
 	CertTimeOK           bool
 	CertTrustChecked     bool
@@ -75,13 +85,14 @@ func (report SignatureVerifyReport) IntegrityValid() bool {
 }
 
 // TrustedValid 判断签名是否可信有效
-// 返回: bool 签名完整性、证书信任及证书有效期是否均验证通过
+// 返回: bool 签名完整性、时间语义、证书信任及证书有效期是否均验证通过
 func (report SignatureVerifyReport) TrustedValid() bool {
-	return report.IntegrityValid() && report.CertTrustChecked && report.CertTrustOK && report.CertTimeChecked && report.CertTimeOK
+	return report.IntegrityValid() && report.certificatePolicyOK() && report.CertTrustChecked && report.CertTimeChecked
 }
 
 // SignatureCertInfo 签名证书信息
 type SignatureCertInfo struct {
+	Raw          []byte
 	Subject      string
 	CommonName   string
 	Organization string
@@ -91,6 +102,18 @@ type SignatureCertInfo struct {
 	NotAfter     time.Time
 }
 
+// SignatureSealInfo 电子印章信息
+type SignatureSealInfo struct {
+	Version    int
+	ID         string
+	VendorID   string
+	Type       int
+	Name       string
+	CreateTime time.Time
+	ValidStart time.Time
+	ValidEnd   time.Time
+}
+
 // SignatureReferenceVerify 签名保护文件验证结果
 type SignatureReferenceVerify struct {
 	FileRef    string
@@ -239,6 +262,9 @@ func (r *Reader) verifySignature(sigListPath string, sigRef Signature, options *
 		Type:        sigRef.Type,
 		SealMatchOK: true,
 	}
+	if report.Type == "" {
+		report.Type = SignTypeSeal
+	}
 	sigData, err := r.readFileExact(sigPath)
 	if err != nil {
 		report.Error = err.Error()
@@ -253,6 +279,9 @@ func (r *Reader) verifySignature(sigListPath string, sigRef Signature, options *
 	report.SignatureMethod = sigFile.SignedInfo.SignatureMethod
 	report.SignatureDateTime = sigFile.SignedInfo.SignatureDateTime
 	report.DigestMethod = sigFile.SignedInfo.References.CheckMethod
+	if report.DigestMethod == "" {
+		report.DigestMethod = "MD5"
+	}
 	report.References = r.verifySignatureReferences(sigPath, sigFile.SignedInfo.References)
 	report.Stamps = append(report.Stamps, sigFile.SignedInfo.StampAnnot...)
 	report.StampPositions, err = r.SignatureStampPositions(report.Stamps)
@@ -266,7 +295,7 @@ func (r *Reader) verifySignature(sigListPath string, sigRef Signature, options *
 		report.Error = err.Error()
 		return report
 	}
-	switch sigRef.Type {
+	switch report.Type {
 	case SignTypeSign:
 		result, err := verifyDigitalSignature(report.SignatureMethod, report.DigestMethod, signedValue, sigData, options)
 		if err != nil {
@@ -279,19 +308,23 @@ func (r *Reader) verifySignature(sigListPath string, sigRef Signature, options *
 		report.CertOK = result.CertOK
 		report.SignCert = result.CertInfo
 		report.Signer = result.CertInfo.CommonName
+		report.SignatureTime = parseSignatureDateTime(report.SignatureDateTime)
+		report.applySignatureTimePolicy()
 		report.applySignatureCertificatePolicy(options, result.SignerCerts, result.Certs)
 		report.Valid = report.IntegrityValid() && report.certificatePolicyOK()
 		return report
-	case "", SignTypeSeal:
+	case SignTypeSeal:
 	default:
-		report.Error = fmt.Sprintf("unsupported signature type: %s", sigRef.Type)
+		report.Error = fmt.Sprintf("unsupported signature type: %s", report.Type)
 		return report
 	}
 	sesResult, err := verifySESSignature(signedValue, sigData, options)
 	if sesResult != nil {
 		report.SignCert = sesResult.SignCert
 		report.SealCert = sesResult.SealCert
+		report.SealInfo = sesResult.SealInfo
 		report.SealType = sesResult.SealType
+		report.SignatureTime = sesResult.SignatureTime
 		report.Signer = sesResult.SignCert.CommonName
 	}
 	if err != nil {
@@ -302,6 +335,7 @@ func (r *Reader) verifySignature(sigListPath string, sigRef Signature, options *
 	report.SignedValueOK = sesResult.SignedOK
 	report.SealOK = sesResult.SealOK
 	report.CertOK = sesResult.CertOK
+	report.applySignatureTimePolicy()
 	report.applySignatureCertificatePolicy(options, [][]byte{sesResult.SignCertRaw, sesResult.SealCertRaw}, sesResult.Certs)
 	if sigFile.SignedInfo.Seal.BaseLoc != "" {
 		sealPath := signatureRefPath(sigPath, sigFile.SignedInfo.Seal.BaseLoc)
@@ -383,6 +417,10 @@ func (r *Reader) readFileExact(name string) ([]byte, error) {
 // 入参: method 摘要算法, data 原文数据
 // 返回: []byte 摘要值, error 错误信息
 func signatureDigest(method string, data []byte) ([]byte, error) {
+	if strings.TrimSpace(method) == "" {
+		sum := md5.Sum(data)
+		return sum[:], nil
+	}
 	if isSM3DigestMethod(method) {
 		return signSM3(data), nil
 	}
@@ -397,6 +435,8 @@ func signatureDigest(method string, data []byte) ([]byte, error) {
 // 返回: crypto.Hash 摘要算法, bool 是否支持
 func signatureDigestHash(method string) (crypto.Hash, bool) {
 	switch signatureMethodText(method) {
+	case "1.2.840.113549.2.5", "MD5":
+		return crypto.MD5, true
 	case "1.3.14.3.2.26", "SHA1":
 		return crypto.SHA1, true
 	case "2.16.840.1.101.3.4.2.4", "SHA224":
@@ -453,6 +493,9 @@ func signatureMethodHash(method, digestMethod string) (crypto.Hash, error) {
 // 返回: []byte 摘要值
 func signatureHashBytes(h crypto.Hash, data []byte) []byte {
 	switch h {
+	case crypto.MD5:
+		sum := md5.Sum(data)
+		return sum[:]
 	case crypto.SHA1:
 		sum := sha1.Sum(data)
 		return sum[:]
@@ -623,9 +666,38 @@ func (report *SignatureVerifyReport) applySignatureCertificatePolicy(options *si
 	}
 }
 
+// applySignatureTimePolicy 应用签名时间策略
+func (report *SignatureVerifyReport) applySignatureTimePolicy() {
+	if !report.SignatureTime.IsZero() && !report.SignCert.NotBefore.IsZero() && !report.SignCert.NotAfter.IsZero() {
+		report.SignatureTimeChecked = true
+		report.SignatureTimeOK = timeInRange(report.SignatureTime, report.SignCert.NotBefore, report.SignCert.NotAfter)
+	}
+	if !report.SignatureTime.IsZero() && !report.SealCert.NotBefore.IsZero() && !report.SealCert.NotAfter.IsZero() {
+		report.SealCertTimeChecked = true
+		report.SealCertTimeOK = timeInRange(report.SignatureTime, report.SealCert.NotBefore, report.SealCert.NotAfter)
+	}
+	if !report.SignatureTime.IsZero() && !report.SealInfo.ValidStart.IsZero() && !report.SealInfo.ValidEnd.IsZero() {
+		report.SealTimeChecked = true
+		report.SealTimeOK = timeInRange(report.SignatureTime, report.SealInfo.ValidStart, report.SealInfo.ValidEnd)
+	}
+}
+
+// timeInRange 判断时间是否位于闭区间
+// 入参: t 待判断时间, start 起始时间, end 结束时间
+// 返回: bool 是否位于区间
+func timeInRange(t, start, end time.Time) bool {
+	return !start.After(end) && !t.Before(start) && !t.After(end)
+}
+
 // certificatePolicyOK 判断证书策略是否通过
 // 返回: bool 是否通过
 func (report SignatureVerifyReport) certificatePolicyOK() bool {
+	if report.SignatureTimeChecked && !report.SignatureTimeOK {
+		return false
+	}
+	if report.SealTimeChecked && !report.SealTimeOK {
+		return false
+	}
 	if report.CertTimeChecked && !report.CertTimeOK {
 		return false
 	}
@@ -790,6 +862,7 @@ func signatureCertInfo(data []byte) SignatureCertInfo {
 	subject := certificateNameValues(cert.SubjectValue)
 	issuer := certificateNameValues(cert.IssuerValue)
 	info := SignatureCertInfo{
+		Raw:          append([]byte(nil), data...),
 		Subject:      certificateNameString(subject),
 		CommonName:   certificateNameFirst(subject, "2.5.4.3"),
 		Organization: certificateNameFirst(subject, "2.5.4.10"),
@@ -803,6 +876,23 @@ func signatureCertInfo(data []byte) SignatureCertInfo {
 	return info
 }
 
+// parseSignatureDateTime 解析带时区的签名时间
+// 入参: value 签名时间文本
+// 返回: time.Time 签名时间
+func parseSignatureDateTime(value string) time.Time {
+	value = strings.TrimSpace(value)
+	for _, layout := range []string{
+		time.RFC3339Nano,
+		"20060102150405.999999999Z07:00",
+		"20060102150405Z07:00",
+	} {
+		if t, err := time.Parse(layout, value); err == nil {
+			return t
+		}
+	}
+	return time.Time{}
+}
+
 const (
 	signatureExtensionKeyUsage         = "2.5.29.15"
 	signatureExtensionBasicConstraints = "2.5.29.19"

ofdgo_text.go

@@ -20,6 +20,7 @@ import (
 	"strings"
 
 	"github.com/tdewolff/canvas"
+	canvastext "github.com/tdewolff/canvas/text"
 	"github.com/tdewolff/font"
 )
 
@@ -29,6 +30,26 @@ type textGlyph struct {
 	GlyphID int
 }
 
+// textGlyphPathCacheKey 字形路径缓存键
+type textGlyphPathCacheKey struct {
+	font       *canvas.Font
+	size       float64
+	fauxBold   float64
+	fauxItalic float64
+	xOffset    int32
+	yOffset    int32
+	language   string
+	script     canvastext.Script
+	direction  canvastext.Direction
+	glyph      textGlyph
+}
+
+// textGlyphPathCacheValue 字形路径缓存值
+type textGlyphPathCacheValue struct {
+	path  *canvas.Path
+	width float64
+}
+
 // textGlyphTransform 字符到字形变换
 type textGlyphTransform struct {
 	CodeCount int
@@ -161,6 +182,30 @@ func textGlyphPath(face *canvas.FontFace, glyph textGlyph) (*canvas.Path, float6
 	return p, face.MmPerEm * float64(face.Font.GlyphAdvance(glyphID))
 }
 
+// cachedTextGlyphPath 获取缓存的字形路径
+// 入参: face 字体, glyph 绘制字形
+// 返回: *canvas.Path 字形路径, float64 字形宽度
+func (r *Renderer) cachedTextGlyphPath(face *canvas.FontFace, glyph textGlyph) (*canvas.Path, float64) {
+	key := textGlyphPathCacheKey{
+		font:       face.Font,
+		size:       face.Size,
+		fauxBold:   face.FauxBold,
+		fauxItalic: face.FauxItalic,
+		xOffset:    face.XOffset,
+		yOffset:    face.YOffset,
+		language:   face.Language,
+		script:     face.Script,
+		direction:  face.Direction,
+		glyph:      glyph,
+	}
+	if cached, ok := r.textGlyphPathCache[key]; ok {
+		return cached.path, cached.width
+	}
+	path, width := textGlyphPath(face, glyph)
+	r.textGlyphPathCache[key] = textGlyphPathCacheValue{path: path, width: width}
+	return path, width
+}
+
 // hasTextMatrix 判断文本是否需要应用字形变换
 // 入参: ctm 变换矩阵
 // 返回: bool 是否需要变换