feat(编辑能力): 完善画布保留排版与字体替换

assets/webui/index.html

@@ -132,6 +132,7 @@
 				</select>
 				<label class="editor-field"><span>行距</span><span class="editor-number"><input id="textLineHeight" type="number" min="0" step="any" placeholder="自动" aria-label="行距" title="行距，0为自动" disabled><span>pt</span></span></label>
 				<button id="textWrap" class="button" type="button" aria-label="自动折行" aria-pressed="false" disabled>折行</button>
+				<button id="textReflow" class="button" type="button" title="重新排版" hidden>重排</button>
 				<label class="editor-field"><span>字距</span><span class="editor-number"><input id="textSpacing" type="number" step="any" placeholder="0" aria-label="字距" title="字距" disabled><span>pt</span></span></label>
 				<button id="paragraphButton" class="editor-group-action" type="button" title="段落缩进" aria-label="段落缩进" aria-haspopup="dialog" aria-controls="paragraphPanel" disabled>段落</button>
 			</div>
@@ -482,14 +483,6 @@
 		<dialog id="objectPicker" class="form-dialog" aria-label="选取对象">
 			<form method="dialog"><div id="objectPickerList" class="object-picker-list"></div><div class="form-actions"><button class="button" type="submit">关闭</button></div></form>
 		</dialog>
-		<dialog id="sourceTextPanel" class="form-dialog" aria-label="保留排版">
-			<form id="sourceTextForm">
-				<h2 class="form-title">保留排版</h2>
-				<div class="form-row"><label for="sourceTextValue">内容</label><textarea id="sourceTextValue" rows="3" dir="auto" aria-label="文字内容" required></textarea></div>
-				<div id="sourceTextPreview" aria-label="文字预览"></div>
-				<div class="form-actions"><span id="sourceTextStatus" class="form-status" role="status"></span><button id="sourceTextCancel" class="button" type="button">取消</button><button class="button primary" type="submit">确定</button></div>
-			</form>
-		</dialog>
 		<dialog id="annotationNote" class="form-dialog" aria-label="注解">
 			<form id="annotationForm" method="dialog">
 				<div id="annotationDetail" class="annotation-detail"></div>

assets/webui/ofdgo.css

@@ -1092,26 +1092,6 @@ button:not(:disabled):hover {
 	}
 }
 
-#sourceTextPanel {
-	width: 440px;
-}
-
-#sourceTextValue {
-	min-height: 80px;
-}
-
-#sourceTextPreview {
-	height: 160px;
-	margin-top: 12px;
-	background: #fff;
-	overflow: hidden;
-}
-
-#sourceTextPreview svg {
-	display: block;
-	width: 100%;
-	height: 100%;
-}
 
 .seal-position-options,
 .seal-position-options label {
@@ -2871,6 +2851,21 @@ button.outline-link:hover {
 	text-indent: inherit;
 }
 
+.edit-text span[data-glyph] {
+	position: relative;
+	-webkit-text-fill-color: transparent;
+}
+
+.edit-text span[data-glyph]::after {
+	content: attr(data-glyph);
+	position: absolute;
+	left: 0;
+	top: 0;
+	-webkit-text-fill-color: currentColor;
+	pointer-events: none;
+	user-select: none;
+}
+
 .edit-text:focus-visible {
 	outline: none;
 }

assets/webui/ofdgo.js

@@ -356,12 +356,6 @@ const el = {
 	objectHeight: document.querySelector("#objectHeight"),
 	objectAspect: document.querySelector("#objectAspect"),
 	objectStylePanel: document.querySelector("#objectStylePanel"),
-	sourceTextPanel: document.querySelector("#sourceTextPanel"),
-	sourceTextForm: document.querySelector("#sourceTextForm"),
-	sourceTextValue: document.querySelector("#sourceTextValue"),
-	sourceTextPreview: document.querySelector("#sourceTextPreview"),
-	sourceTextStatus: document.querySelector("#sourceTextStatus"),
-	sourceTextCancel: document.querySelector("#sourceTextCancel"),
 	objectStyleForm: document.querySelector("#objectStyleForm"),
 	groupObjectsButton: document.querySelector("#groupObjectsButton"),
 	ungroupObjectButton: document.querySelector("#ungroupObjectButton"),
@@ -603,7 +597,7 @@ const annotationFields = Object.fromEntries(["CreateForm", "CreateCancel", "Cont
 el.editorTools.addEventListener("scroll", () => fontPicker.position());
 
 const canvasEditor = new CanvasEditor(el.viewerPanel, {
-	textControls: [el.textFont, el.textFontToggle, el.textFontAdd, el.textFontList, el.textSize, el.textColor, textBackground, ...textFormatButtons, el.undoButton, el.redoButton, el.saveButton, el.fontInput],
+	textControls: [el.textFont, el.textFontToggle, el.textFontAdd, el.textFontList, el.textSize, el.textColor, textBackground, ...textFormatButtons, el.undoButton, el.redoButton, el.saveButton, el.fontInput, document.querySelector("#textReflow")],
 	keepTextFocus: () => fontPicker.open || canvasEditor.input?.fontDialog,
 	textClipboardScope: () => `${state.wasmSeq}:${state.fileName}:${state.doc?.documents?.[state.doc.documentIndex || 0]?.root}:${state.doc?.documentIndex || 0}:${state.doc?.documentVersion || ""}`,
 	busy: () => document.body.hasAttribute("aria-busy"),
@@ -673,20 +667,21 @@ const canvasEditor = new CanvasEditor(el.viewerPanel, {
 	onDrawText: beginCanvasText,
 	onDrawAnnotation: placeAnnotation,
 	onDrawInk: (index, points, style, pressure) => changeDocument("ofdgoInsertInk", null, index, JSON.stringify(points), style.lineWidth, pressure, style.strokeColor),
-	onPreviewText: (item, value, font, size) => callWASM("ofdgoPreviewText", item.index, item.id, value, font || null, size),
+	onPreviewText: (item, value, font, size, reflow) => callWASM("ofdgoPreviewText", item.index, item.id, value, font || null, size, !!reflow),
 	onCommitRichText: saveRichText,
 	onPreviewRichText: validateRichText,
 	onTextError: (message, previous) => {
 		if (message) setStatus(message);
 		else if (el.statusText.textContent === previous) setStatus(state.doc ? pageStatus(state.pageIndex, state.doc.pageCount) : STATUS.ready);
 	},
-	onCommitText: (item, value, fontData, color = null) => item.draft
+	onCommitText: (item, value, fontData, color = null, reflow = false) => item.draft
 		? changeDocument("ofdgoInsertText", null, item.index, value, fontData || item.fontData, item.x, item.y, item.size, item.color, item.width, item.wrap, item.align, item.paragraphHeight, item.letterSpacing, ...textIndents(item))
-		: changeDocument("ofdgoUpdateText", item, value, fontData || null, item.size, color),
+		: changeDocument("ofdgoUpdateText", item, value, fontData || null, item.size, color, reflow),
 	onTextChange: () => {
 		const editing = canvasEditor.input;
 		updatePendingChanges();
-		if (editing?.rich) updateObjectControls(canvasEditor.selected);
+		if (editing?.rich || editing?.source) updateObjectControls(canvasEditor.selected);
+		if (editing?.source) updateTextFonts(canvasEditor.selected, true);
 		if (!editing) {
 			updateObjectControls(canvasEditor.selected);
 			updateTextFonts(canvasEditor.selected, true);
@@ -1120,7 +1115,7 @@ el.resetCropButton.addEventListener("click", () => {
 });
 for (const [button, direction, command] of [[el.undoButton, -1, "ofdgoUndo"], [el.redoButton, 1, "ofdgoRedo"]]) {
 	button.addEventListener("click", async () => {
-		if (canvasEditor.input?.rich) { canvasEditor.textUndo(direction); return; }
+		if (canvasEditor.input?.rich || canvasEditor.input?.source) { canvasEditor.textUndo(direction); return; }
 		if (!await canvasEditor.commitNudge() || !await canvasEditor.commitText() || !await canvasEditor.commitCrop()) return;
 		await changeDocument(command);
 	});
@@ -1279,22 +1274,7 @@ el.objectBoundsForm.addEventListener("submit", async event => {
 	if (saved) el.objectBoundsPanel.close();
 });
 el.objectStyleCancel.addEventListener("click", () => el.objectStylePanel.close());
-el.sourceTextCancel.addEventListener("click", () => el.sourceTextPanel.close());
-el.sourceTextValue.addEventListener("input", () => {
-	clearTimeout(state.sourceTextTimer);
-	state.sourceTextTimer = setTimeout(previewPositionedText, 150);
-});
-el.sourceTextPanel.addEventListener("close", () => {
-	clearTimeout(state.sourceTextTimer);
-	state.sourceText = null;
-	el.sourceTextPreview.replaceChildren();
-});
-el.sourceTextForm.addEventListener("submit", async event => {
-	event.preventDefault();
-	const item = state.sourceText?.item;
-	if (!item) return;
-	if (await changeDocument("ofdgoUpdateText", item, el.sourceTextValue.value, null, item.size, null)) el.sourceTextPanel.close();
-});
+document.querySelector("#textReflow").addEventListener("click", reflowCanvasText);
 el.objectLinkKind.addEventListener("change", updateObjectLinkFields);
 el.gradientKind.addEventListener("change", () => {
 	el.gradientControls.hidden = el.gradientKind.value === "keep";
@@ -1831,7 +1811,7 @@ function handleKeyDown(event) {
 
 function formDialogOpen() {
 	return Boolean(sealPreview || resourceManager.pick) || settingsElements.Panel.open || fontBindingElements.Panel.open || el.signPanel.open || el.verifyPanel.open || el.credentialsPanel.open || el.encryptionPanel.open || batchElements.Panel.open || el.exportPanel.open || el.createPanel.open || el.insertPanel.open || el.pagePanel.open || el.paragraphPanel.open || el.importPanel.open || el.infoPanel.open || el.documentPanel.open
-		|| resourceElements.Panel.open || el.structureDialog.open || el.versionPanel.open || el.batchPagesPanel.open || el.objectStylePanel.open || el.sourceTextPanel.open || el.outlinePanel.open || el.objectBoundsPanel.open || el.annotationNote.open || el.annotationCreate.open || el.objectPicker.open;
+		|| resourceElements.Panel.open || el.structureDialog.open || el.versionPanel.open || el.batchPagesPanel.open || el.objectStylePanel.open || el.outlinePanel.open || el.objectBoundsPanel.open || el.annotationNote.open || el.annotationCreate.open || el.objectPicker.open;
 }
 
 function setObjectDimension(input, value) {
@@ -2908,18 +2888,7 @@ async function editCanvasObject(item) {
 		return;
 	}
 	if (item.type === "TextObject") {
-		if (!canEditObject(item, "textContent")) {
-			if (canEditObject(item, "rewriteText")) {
-				state.sourceText = { item, openSeq: state.openSeq };
-				el.sourceTextValue.value = item.text;
-				el.sourceTextStatus.textContent = "";
-				el.sourceTextPreview.replaceChildren();
-				el.sourceTextPanel.showModal();
-				el.sourceTextValue.focus();
-				await previewPositionedText();
-			}
-			return;
-		}
+		if (!canEditObject(item, "textContent") && !canEditObject(item, "rewriteText")) return;
 	} else if (!canEditObject(item, item.type === "ImageObject" ? "replaceImage" : "update")) return;
 	if (item.type === "PathObject") {
 		el.shapeWidth.focus();
@@ -2931,7 +2900,7 @@ async function editCanvasObject(item) {
 	const openSeq = state.openSeq;
 	setBusy(true);
 	try {
-		const data = await callWASM("ofdgoEditorFont", item.font);
+		const data = await callWASM("ofdgoEditorFont", item.font, !canEditObject(item, "layoutKnown"));
 		const face = new FontFace(`ofdgo-edit-${item.font}`, data.bytes, fontFaceStyle(data.bytes));
 		await face.load();
 		let rich = null;
@@ -2954,22 +2923,6 @@ async function editCanvasObject(item) {
 	}
 }
 
-async function previewPositionedText() {
-	const request = state.sourceText, value = el.sourceTextValue.value;
-	if (!request || !el.sourceTextPanel.open) return;
-	try {
-		const svg = await callWASM("ofdgoPreviewPositionedText", request.item.index, request.item.id, value);
-		if (state.sourceText !== request || request.openSeq !== state.openSeq || el.sourceTextValue.value !== value) return;
-		el.sourceTextPreview.replaceChildren(parseSVG(svg));
-		el.sourceTextStatus.textContent = "";
-	} catch (error) {
-		if (state.sourceText === request && request.openSeq === state.openSeq && el.sourceTextValue.value === value) {
-			el.sourceTextPreview.replaceChildren();
-			el.sourceTextStatus.textContent = error.message;
-		}
-	}
-}
-
 function mountEditorObjects(index, page, surface) {
 	const scope = state.composite?.index === index ? state.composite : null;
 	canvasEditor.mount(index, { ...page, objects: scope ? scope.objects : page.objects.filter(item => state.renderAnnotations || item.type !== "Annotation") }, surface);
@@ -3108,6 +3061,16 @@ async function ensureRichInput() {
 	return canvasEditor.promoteText(rich);
 }
 
+async function reflowCanvasText() {
+	const editing = canvasEditor.input;
+	if (document.body.hasAttribute("aria-busy") || !editing?.source || editing.composing || editing.saving || !canEditObject(editing.item, "reflow")) return;
+	if (!window.confirm("将重新排版原文，是否继续？")) return;
+	editing.reflow = true;
+	canvasEditor.recordSourceText();
+	await canvasEditor.previewSourceText();
+	updateObjectControls(canvasEditor.selected, true);
+}
+
 async function changeRangeFormat(key, value) {
 	if (!state.ready || document.body.hasAttribute("aria-busy") || canvasEditor.input?.composing) return;
 	try {
@@ -3480,6 +3443,7 @@ async function changeTextStyle(color) {
 		try { if (!await ensureRichInput()) return; } catch (error) { showError(error, false); return; }
 	}
 	if (canvasEditor.input) {
+		if (!color && canvasEditor.input.source && !canvasEditor.input.reflow && size !== item.size && !confirmTextReflow(item)) return;
 		canvasEditor.setTextStyle(color ? { color: selectedColor } : { size });
 		updateObjectControls(canvasEditor.selected, true);
 		return;
@@ -3782,8 +3746,6 @@ async function changeDocument(name, item, ...args) {
 				el.batchPagesStatus.textContent = err.message;
 			} else if (el.objectStylePanel.open) {
 				el.objectStyleStatus.textContent = err.message;
-			} else if (el.sourceTextPanel.open) {
-				el.sourceTextStatus.textContent = err.message;
 			} else if (el.objectBoundsPanel.open) {
 				el.objectBoundsStatus.textContent = err.message;
 			} else if (el.outlinePanel.open) {
@@ -4583,7 +4545,6 @@ async function openOFD(file, remote = null) {
 		el.importPanel.close();
 		el.batchPagesPanel.close();
 		el.objectStylePanel.close();
-		el.sourceTextPanel.close();
 		el.objectBoundsPanel.close();
 		el.outlinePanel.close();
 		el.structureDialog.close();
@@ -11799,12 +11760,16 @@ function updateObjectControls(item, reset = false) {
 	textBackground.classList.toggle("mixed-color", Boolean((canvasEditor.input?.rich || item?.richText) && text.background === undefined));
 	if (text.background) textBackground.value = text.background;
 	document.querySelector("#textHighlight").style.setProperty("--highlight-color", textBackground.value);
-	const richHistory = canvasEditor.input?.rich;
+	const richHistory = canvasEditor.input?.rich || canvasEditor.input?.history;
 	if (richHistory) {
 		el.undoButton.disabled = textDisabled || richHistory.index === 0;
 		el.redoButton.disabled = textDisabled || richHistory.index === richHistory.entries.length - 1;
 	}
 	el.textAlign.disabled = el.textWrap.disabled = el.textLineHeight.disabled = el.textSpacing.disabled = el.textSize.disabled || Boolean(item?.items || item?.draft) || Boolean(canvasEditor.input);
+	const reflow = document.querySelector("#textReflow"), positioned = canvasEditor.input?.source && !canEditObject(item, "layoutKnown");
+	reflow.hidden = !positioned;
+	el.textWrap.hidden = !!positioned;
+	reflow.disabled = textDisabled || !canEditObject(item, "reflow") || !!canvasEditor.input?.reflow;
 	el.paragraphButton.disabled = el.textAlign.disabled;
 	const layoutKnown = text === state.textDefaults || Boolean(item?.draft) || canEditObject(item, "layoutKnown");
 	el.textAlign.value = layoutKnown ? text.align || "left" : "";

assets/webui/ofdgo_edit.js

@@ -1536,7 +1536,7 @@ export class CanvasEditor {
 		const editing = this.input;
 		if (rich) editing.rich = new RichTextSession(this, rich.model, rich.faces, rich.fonts);
 		if (rich && !rich.model.layout.lineHeight) input.style.lineHeight = "normal";
-		if (source) editing.history = { entries: [{ value: item.text }], index: 0 };
+		if (source) editing.history = { entries: [{ value: item.text, face, fontChoice: item.fontChoice }], index: 0 };
 		item.artwork?.classList.add("edit-text-source");
 		item.node.classList.add("edit-text-source");
 		item.surface.append(input);
@@ -1631,7 +1631,8 @@ export class CanvasEditor {
 		if (editing.rich) editing.rich.render();
 		input.focus({ preventScroll: true });
 		if (!item.draft) document.getSelection().selectAllChildren(input);
-		if (editing.rich) { editing.rich.selection(); this.options.onTextChange(); }
+		if (editing.rich) editing.rich.selection();
+		this.options.onTextChange();
 	}
 
 	textUndo(direction) {
@@ -1715,8 +1716,10 @@ export class CanvasEditor {
 		const editing = this.input;
 		if (!editing?.history || editing.composing) return;
 		const { history, input } = editing, value = editTextValue(input);
-		if (history.entries[history.index].value === value) return;
-		history.entries.splice(++history.index, Infinity, { value, caret: editTextSelection(input) });
+		const previous = history.entries[history.index];
+		if (previous.value === value && previous.fontData === editing.fontData && previous.style === editing.style && !!previous.reflow === !!editing.reflow) return;
+		history.entries.splice(++history.index, Infinity, { value, caret: editTextSelection(input), face: editing.face,
+			fontData: editing.fontData, fontChoice: editing.fontChoice, style: editing.style, reflow: editing.reflow });
 	}
 
 	restoreSourceText(direction) {
@@ -1726,6 +1729,14 @@ export class CanvasEditor {
 		if (index < 0 || index >= history.entries.length) return;
 		history.index = index;
 		const entry = history.entries[index], fragment = document.createDocumentFragment(), positions = [];
+		if (entry.face) {
+			document.fonts.delete(editing.face);
+			document.fonts.add(entry.face);
+			Object.assign(editing, { face: entry.face, fontData: entry.fontData, fontChoice: entry.fontChoice, style: entry.style, reflow: entry.reflow });
+			editing.input.style.fontFamily = `"${entry.face.family}"`;
+			editing.input.style.fontSize = `${(entry.style?.size || editing.item.size) * PX_PER_MM}px`;
+			editing.input.style.color = entry.style?.color || editing.item.color;
+		}
 		let position = 0;
 		for (const text of entry.value.split("\n")) {
 			const paragraph = document.createElement("div");
@@ -1745,11 +1756,11 @@ export class CanvasEditor {
 	async previewSourceText() {
 		const editing = this.input;
 		if (!editing?.source || editing.composing || editing.saving) return;
-		const value = editTextValue(editing.input), font = editing.fontData, size = editing.style?.size || editing.item.size;
+		const value = editTextValue(editing.input), font = editing.fontData, size = editing.style?.size || editing.item.size, reflow = !!editing.reflow;
 		const current = () => this.input === editing && !editing.rich && !editing.composing && !editing.saving && editing.fontData === font
-			&& (editing.style?.size || editing.item.size) === size && editTextValue(editing.input) === value;
+			&& (editing.style?.size || editing.item.size) === size && !!editing.reflow === reflow && editTextValue(editing.input) === value;
 		try {
-			const source = await this.options.onPreviewText(editing.item, value, font, size);
+			const source = await this.options.onPreviewText(editing.item, value, font, size, reflow);
 			if (!current()) return;
 			this.setTextError(null);
 			this.paintSourceText(source);
@@ -1768,7 +1779,8 @@ export class CanvasEditor {
 		const metrics = context.measureText("Mg"), baseline = (size + metrics.fontBoundingBoxAscent - metrics.fontBoundingBoxDescent) / 2;
 		Object.assign(input.style, { lineHeight: `${size}px`, fontWeight: String(source.weight || 400), fontStyle: source.italic ? "italic" : "normal" });
 		const fragment = document.createDocumentFragment(), positions = [];
-		let line, lineIndex = -1, naturalX = 0, position = 0;
+		let line, lineIndex = -1, naturalX = 0, position = 0, glyphIndex = 0;
+		const angle = (source.rotation || 0) * Math.PI / 180, cos = Math.cos(angle), sin = Math.sin(angle);
 		let left = Infinity, top = Infinity, right = -Infinity, bottom = -Infinity;
 		for (const run of source.runs) {
 			if (!line || run.line) {
@@ -1790,15 +1802,23 @@ export class CanvasEditor {
 				y = run.positions[index][1] * PX_PER_MM;
 				const span = document.createElement("span"), node = document.createTextNode(char);
 				span.append(node);
-				Object.assign(span.style, { display: "inline-block", opacity: String((item.alpha ?? 255) / 255), transformOrigin: "left top", transform: `translate(${x - naturalX}px,${y - baseline - lineIndex * size}px) scaleX(${source.scale})` });
+				const glyph = source.glyphs?.[glyphIndex++];
+				if (glyph) span.dataset.glyph = glyph;
+				Object.assign(span.style, { display: "inline-block", opacity: String((item.alpha ?? 255) / 255), transformOrigin: `left ${baseline}px`, transform: `translate(${x - naturalX}px,${y - baseline - lineIndex * size}px) rotate(${source.rotation || 0}deg) scale(${source.scale},${source.vscale || 1})` });
 				line.append(span);
 				positions.push({ node, start: position, end: position + char.length });
 				position += char.length;
-				const advance = context.measureText(char).width;
-				left = Math.min(left, x);
-				top = Math.min(top, y - baseline);
-				right = Math.max(right, x + advance * source.scale);
-				bottom = Math.max(bottom, y + size - baseline);
+				const advance = context.measureText(glyph || char).width;
+				if (glyph) span.style.width = `${advance}px`;
+				for (const dx of [0, advance * source.scale]) {
+					for (const dy of [-baseline * (source.vscale || 1), (size - baseline) * (source.vscale || 1)]) {
+						const px = x + dx * cos - dy * sin, py = y + dx * sin + dy * cos;
+						left = Math.min(left, px);
+						top = Math.min(top, py);
+						right = Math.max(right, px);
+						bottom = Math.max(bottom, py);
+					}
+				}
 				naturalX += advance;
 				index++;
 			}
@@ -1827,6 +1847,7 @@ export class CanvasEditor {
 		editing.face = face;
 		editing.fontData = data;
 		editing.input.style.fontFamily = `"${face.family}"`;
+		this.recordSourceText();
 		this.options.onTextChange();
 		editing.input.focus({ preventScroll: true });
 		this.previewSourceText();
@@ -1841,6 +1862,7 @@ export class CanvasEditor {
 		const item = { ...editing.item, ...editing.style };
 		editing.input.style.fontSize = `${item.size * PX_PER_MM}px`;
 		editing.input.style.color = item.color;
+		this.recordSourceText();
 		this.fitTextInput();
 		this.options.onTextChange();
 		if ("size" in values) this.previewSourceText();
@@ -1852,7 +1874,7 @@ export class CanvasEditor {
 		if (editing.rich) return Boolean(editing.refreshPending) || (!editing.item.draft || Boolean(editing.rich.text.trim())) && editing.rich.changed;
 		const value = editTextValue(editing.input);
 		return (!editing.item.draft || Boolean(value.trim()))
-			&& (value !== editing.item.text || Boolean(editing.fontData || editing.style));
+			&& (value !== editing.item.text || Boolean(editing.fontData || editing.style || editing.reflow));
 	}
 
 	async commitText() {
@@ -1874,7 +1896,7 @@ export class CanvasEditor {
 		let saved = false;
 		try {
 			saved = editing.rich ? await this.options.onCommitRichText(editing.item, editing.rich.model, editing.rich.fonts)
-				: await this.options.onCommitText(editing.style ? { ...editing.item, ...editing.style } : editing.item, value, editing.fontData, editing.style?.color ?? null);
+				: await this.options.onCommitText(editing.style ? { ...editing.item, ...editing.style } : editing.item, value, editing.fontData, editing.style?.color ?? null, !!editing.reflow);
 		} catch (error) {
 			if (this.input === editing) this.setTextError(error);
 		}

internal/webui/wasm.go

@@ -1428,7 +1428,7 @@ func resourceLocations(args []js.Value) (any, error) {
 }
 
 // fontPreview 使用当前文档和版本的字形轮廓生成独立预览
-// 入参: args 字体资源标识
+// 入参: args 字体资源标识及可选字形映射标记
 // 返回: any SVG数据, error 字体或绘制错误
 func fontPreview(args []js.Value) (any, error) {
 	if currentSession == nil || len(args) != 1 {
@@ -3009,6 +3009,9 @@ func changeCompositeText(page int, path ofdgo.ObjectPath, indexes []int, operati
 		args = args[1:]
 	}
 	style := ofdgo.TextStyle{Size: args[1].Float()}
+	if len(args) > 3 {
+		style.Reflow = args[3].Bool()
+	}
 	if !args[0].IsNull() {
 		data, err := bytesFromJS(args[0])
 		if err != nil {
@@ -3061,6 +3064,12 @@ func editorFont(args []js.Value) (any, error) {
 	if err != nil {
 		return nil, err
 	}
+	if len(args) > 1 && args[1].Bool() {
+		_, data, _, _, err = ofdgo.FixFontDataAggressive(data, true, false)
+		if err != nil {
+			return nil, err
+		}
+	}
 	return successResult(map[string]any{"bytes": bytesToJS(data)}), nil
 }
 
@@ -3090,7 +3099,7 @@ func editorObjectAt(page int, key string) (ofdgo.GraphicObject, error) {
 }
 
 // previewText 生成保留原定位的输入预览，不修改文档或历史
-// 入参: args 页码、对象路径、新文字、可选字体数据和字号
+// 入参: args 页码、对象路径、新文字、可选字体数据、字号及重排标记
 // 返回: any 定位段及字体样式, error 错误信息
 func previewText(args []js.Value) (any, error) {
 	key := args[1].String()
@@ -3103,18 +3112,23 @@ func previewText(args []js.Value) (any, error) {
 		return nil, fmt.Errorf("object is not text")
 	}
 	editor := currentEditor
+	fontID := ""
 	if len(args) > 3 && !args[3].IsNull() {
 		data, err := bytesFromJS(args[3])
 		if err != nil {
 			return nil, err
 		}
 		editor = ofdgo.NewEditor()
-		text.Font, err = editor.AddFont(FontFile{Data: data}, 0)
+		fontID, err = editor.AddFont(FontFile{Data: data}, 0)
 		if err != nil {
 			return nil, err
 		}
+		text.Font = ""
+	}
+	if len(args) > 4 && args[4].Float() != text.Size || len(args) > 5 && args[5].Bool() {
+		if fontID != "" {
+			text.Font = fontID
 		}
-	if len(args) > 4 && args[4].Float() != text.Size {
 		var x, y float64
 		if strings.Contains(key, "/") {
 			x, _ = strconv.ParseFloat(text.TextCode[0].X, 64)
@@ -3134,7 +3148,7 @@ func previewText(args []js.Value) (any, error) {
 				code.X, code.Y = fmt.Sprint(cx+x), fmt.Sprint(cy+y-baseline)
 			}
 		}
-	} else if err := editor.RewriteText(&text, args[2].String()); err != nil {
+	} else if err := editor.RewriteTextWithFont(&text, args[2].String(), fontID); err != nil {
 		return nil, err
 	}
 	var runs []any
@@ -3166,7 +3180,22 @@ func previewText(args []js.Value) (any, error) {
 	if scale == 0 {
 		scale = 1
 	}
-	return map[string]any{"runs": runs, "scale": scale, "weight": text.Weight, "italic": text.Italic}, nil
+	glyphs := make(map[int]string)
+	if fontID == "" {
+		for _, transform := range text.CGTransform {
+			if transform.CodeCount != transform.GlyphCount {
+				continue
+			}
+			for i, value := range strings.Fields(transform.Glyphs) {
+				glyph, err := strconv.ParseUint(value, 10, 16)
+				if err != nil {
+					return nil, err
+				}
+				glyphs[transform.CodePosition+i] = string(rune(0xF0000 + glyph))
+			}
+		}
+	}
+	return map[string]any{"runs": runs, "glyphs": glyphs, "scale": scale, "vscale": text.VScale, "rotation": text.CharDirection, "weight": text.Weight, "italic": text.Italic}, nil
 }
 
 // previewPositionedText 预览保留定位的文字替换，不修改编辑器或撤销记录
@@ -3204,78 +3233,71 @@ func previewPositionedText(args []js.Value) (any, error) {
 }
 
 // updateText 修改文字，null内容保留定位且允许替换字体，null字体数据和颜色沿用对象属性
-// 入参: args 页码、对象标识、内容、字体数据、字号和颜色
+// 入参: args 页码、对象标识、内容、字体数据、字号、颜色及可选重排标记
 // 返回: any 文档信息, error 错误信息
 func updateText(args []js.Value) (any, error) {
-	if currentEditor == nil {
-		return nil, fmt.Errorf("no document is being edited")
-	}
+	return changeObjects(func() error { return applyTextUpdate(args) })
+}
+
+// applyTextUpdate 在当前事务中修改文字及字体，不刷新会话
+// 入参: args 页码、对象标识、内容、字体数据、字号、颜色及可选重排标记
+// 返回: error 字体、排版或提交错误
+func applyTextUpdate(args []js.Value) error {
 	page, id := args[0].Int(), args[1].String()
 	object, err := currentEditor.Object(page, id)
 	if err != nil {
-		return nil, err
+		return err
 	}
 	if object.Type != "TextObject" {
-		return nil, fmt.Errorf("object %q is not text", id)
+		return fmt.Errorf("object %q is not text", id)
 	}
 	if !args[3].IsNull() {
 		data, err := bytesFromJS(args[3])
 		if err != nil {
-			return nil, err
+			return err
 		}
 		value := object.TextObject.Text()
 		if !args[2].IsNull() {
 			value = args[2].String()
 		}
 		if err := checkFontGlyphs(data, value); err != nil {
-			return nil, err
+			return err
 		}
 		object.TextObject.Font, err = currentEditor.AddFont(FontFile{Data: data}, 0)
 		if err != nil {
-			return nil, err
+			return err
 		}
 	}
 	if !args[2].IsNull() {
-		if args[4].Float() == object.TextObject.Size {
-			var style ofdgo.TextStyle
+		if args[4].Float() == object.TextObject.Size || len(args) > 6 && args[6].Bool() {
+			style := ofdgo.TextStyle{Reflow: len(args) > 6 && args[6].Bool()}
+			if style.Reflow {
+				style.Size = args[4].Float()
+			}
 			if !args[3].IsNull() {
 				style.Font = object.TextObject.Font
 			}
 			if !args[5].IsNull() {
 				var fill ofdgo.FillColor
 				if err := setEditorColor(&fill, args[5].String()); err != nil {
-					return nil, err
+					return err
 				}
 				style.Color = fill.Value
 			}
-			revision := currentEditor.Revision()
-			if err := currentEditor.UpdateTextContent(page, id, args[2].String(), style); err != nil {
-				return nil, err
-			}
-			if currentEditor.Revision() == revision {
-				return editorSummary(), nil
-			}
-			return previewEditor(currentEditor, currentSession.Renderer.RenderAnnotations)
+			return currentEditor.UpdateTextContent(page, id, args[2].String(), style)
 		}
 		object.TextObject.Size = args[4].Float()
 		_, layout := object.TextObject.TextLayout()
 		if err := currentEditor.LayoutText(&object.TextObject, args[2].String(), layout); err != nil {
-			return nil, err
+			return err
 		}
 	}
 	if !args[5].IsNull() {
 		if err := setTextColor(&object.TextObject, args[5].String()); err != nil {
-			return nil, err
+			return err
 		}
 	}
-	revision := currentEditor.Revision()
-	if err := currentEditor.UpdateObject(page, id, object); err != nil {
-		return nil, err
-	}
-	if currentEditor.Revision() == revision {
-		return editorSummary(), nil
-	}
-	return previewEditor(currentEditor, currentSession.Renderer.RenderAnnotations)
+	return currentEditor.UpdateObject(page, id, object)
 }
 
 // checkFontGlyphs 只检查候选字体，不注册资源或改变文档

ofdgo_editor_composite_text.go

@@ -70,6 +70,9 @@ func (e *Editor) changeCompositeText(page int, path ObjectPath, indexes []int, v
 // 入参: node 原文节点, member 有效快照, value 新内容, style 样式增量, options 段落选项, frame 文字框调整
 // 返回: error 错误信息
 func (e *Editor) updateCompositeText(node *editorCompositeNode, member CompositeMember, value *string, style TextStyle, options *TextLayout, frame *Box) error {
+	if style.Reflow {
+		options = &TextLayout{AutoBidi: true}
+	}
 	rewriteOnly := value != nil && options == nil && frame == nil && style.Color == "" && (style.Font == "" || style.Font == member.Object.TextObject.Font) && (style.Size == 0 || style.Size == member.Object.TextObject.Size)
 	if node.object.Type != "TextObject" || !member.Capabilities.ReplaceFont && !(rewriteOnly && member.Capabilities.RewriteText) {
 		return fmt.Errorf("composite text style is not supported")
@@ -81,7 +84,11 @@ func (e *Editor) updateCompositeText(node *editorCompositeNode, member Composite
 	original := content
 	if style.Font != "" {
 		if state.layout == nil && options == nil && (style.Size == 0 || style.Size == text.Size) {
-			if err := e.replaceTextFont(&text, style.Font); err != nil {
+			replacement := content
+			if value != nil {
+				replacement = *value
+			}
+			if err := e.RewriteTextWithFont(&text, replacement, style.Font); err != nil {
 				return err
 			}
 		} else {

ofdgo_editor_open.go

@@ -628,7 +628,6 @@ func (e *Editor) objectCapabilities(object GraphicObject, orderable map[*editorX
 	}
 	if object.Type == "TextObject" {
 		all.TextContent = all.Update && object.TextObject.ReadDirection == 0 && object.TextObject.CharDirection == 0 && (all.LayoutKnown || len(object.TextObject.CGTransform) == 0)
-		all.Reflow = all.Reflow && (all.LayoutKnown || len(object.TextObject.CGTransform) == 0)
 		all.RewriteText = all.TextContent
 		if !all.RewriteText {
 			text := object.TextObject

ofdgo_editor_text.go

@@ -55,10 +55,12 @@ type TextLayout struct {
 // TextStyle 文字样式增量
 // Font为空时保留原字体，Size单位为毫米且为0时保留原字号
 // Color为OFD的RGB分量字符串，空值保留原颜色，修改时保留原透明度
+// Reflow显式重新排版，默认保留原文定位
 type TextStyle struct {
 	Font   string
 	Size   float64
 	Color  string
+	Reflow bool
 }
 
 // textLayout 保存编辑中的原文与选项，不写入OFD，也不参与渲染
@@ -140,11 +142,37 @@ func (e *Editor) UpdateTextContent(page int, id, value string, style TextStyle)
 			}
 		}
 	}()
+	reflow := style.Reflow
+	if reflow {
+		if object.TextObject.ReadDirection != 0 || object.TextObject.CharDirection != 0 {
+			return &EditError{Code: EditLayoutRequired, Err: fmt.Errorf("paragraph layout requires horizontal text")}
+		}
+		if style.Font != "" {
+			object.TextObject.Font = style.Font
+		}
+		if style.Size != 0 {
+			object.TextObject.Size = style.Size
+		}
+		if err := e.LayoutText(&object.TextObject, value, TextLayout{AutoBidi: true}); err != nil {
+			return err
+		}
+		style.Font, style.Size = "", 0
+		style.Reflow = false
+	}
+	if !capability.LayoutKnown && !reflow && style.Font != "" {
+		if err := e.RewriteTextWithFont(&object.TextObject, value, style.Font); err != nil {
+			return err
+		}
+		style.Font = ""
+	}
 	updates, err := e.styleTextObjects([]GraphicObject{object}, style)
 	if err != nil {
 		return err
 	}
 	text := &updates[0].TextObject
+	if reflow {
+		return e.updateObjects(page, updates, true)
+	}
 	if capability.LayoutKnown {
 		_, layout := text.TextLayout()
 		err = e.LayoutText(text, value, layout)
@@ -283,10 +311,12 @@ func (e *Editor) RewriteText(obj *TextObject, value string) error {
 				}
 				if mapping < len(transforms) && position+j >= transforms[mapping].CodePosition {
 					transform := &transforms[mapping]
-					if transform.CodeCount != 1 || transform.GlyphCount != 1 {
+					if transform.CodeCount != transform.GlyphCount {
 						return &EditError{Code: EditLayoutRequired, Err: fmt.Errorf("changing a combined glyph requires explicit layout")}
 					}
-					transform.Glyphs = strconv.Itoa(int(sfnt.GlyphIndex(char)))
+					glyphs := strings.Fields(transform.Glyphs)
+					glyphs[position+j-transform.CodePosition] = strconv.Itoa(int(sfnt.GlyphIndex(char)))
+					transform.Glyphs = strings.Join(glyphs, " ")
 				}
 			}
 		}
@@ -300,6 +330,52 @@ func (e *Editor) RewriteText(obj *TextObject, value string) error {
 	return nil
 }
 
+// RewriteTextWithFont 更换字体并修改定位文字，保留原始坐标及逐字映射，失败时不改变对象
+// 入参: obj 文字对象, value 新内容, fontID 目标字体，空值沿用原字体
+// 返回: error 字体、定位或字形错误
+func (e *Editor) RewriteTextWithFont(obj *TextObject, value, fontID string) error {
+	value = strings.ReplaceAll(strings.ReplaceAll(value, "\r\n", "\n"), "\r", "\n")
+	if fontID == "" || fontID == obj.Font {
+		return e.RewriteText(obj, value)
+	}
+	text := cloneEditorData(*obj)
+	if err := validateTextGlyphs(text, 1<<16); err != nil {
+		return err
+	}
+	for _, transform := range text.CGTransform {
+		if transform.CodeCount != transform.GlyphCount {
+			return &EditError{Code: EditLayoutRequired, Err: fmt.Errorf("changing the font of combined glyphs requires explicit layout")}
+		}
+	}
+	if len(text.CGTransform) != 0 && len([]rune(text.Text())) != len([]rune(value)) {
+		return &EditError{Code: EditLayoutRequired, Err: fmt.Errorf("changing positioned text length requires explicit layout")}
+	}
+	transforms := text.CGTransform
+	text.Font, text.CGTransform = fontID, nil
+	if err := e.RewriteText(&text, value); err != nil {
+		return err
+	}
+	font, err := e.editorFont(fontID)
+	if err != nil {
+		return err
+	}
+	var missing []rune
+	for _, char := range text.Text() {
+		if char != '\n' && font.GlyphIndex(char) == 0 {
+			missing = append(missing, char)
+		}
+	}
+	if err := missingGlyphError(fontID, missing); err != nil {
+		return err
+	}
+	text.Font, text.CGTransform = obj.Font, transforms
+	if err := e.replaceTextFont(&text, fontID); err != nil {
+		return err
+	}
+	*obj = text
+	return nil
+}
+
 // TextLayout 获取最近一次排版的原文与选项，区分软换行和显式换行
 // 信息仅在当前编辑过程保留，读取OFD时返回定位后的文字和默认选项
 // 返回: string 原文, TextLayout 排版选项
@@ -393,6 +469,13 @@ func (e *Editor) styleTextObjects(objects []GraphicObject, style TextStyle) ([]G
 		text := &updates[i].TextObject
 		value, layout := text.TextLayout()
 		known := e.objectOrigin(id) == nil || text.layout != nil
+		if style.Reflow {
+			if text.ReadDirection != 0 || text.CharDirection != 0 {
+				return nil, &EditError{Code: EditLayoutRequired, Err: fmt.Errorf("paragraph layout requires horizontal text")}
+			}
+			known = true
+			layout.AutoBidi = true
+		}
 		fontChanged := style.Font != "" && style.Font != text.Font
 		sizeChanged := style.Size != 0 && style.Size != text.Size
 		if sizeChanged && !known {
@@ -408,7 +491,7 @@ func (e *Editor) styleTextObjects(objects []GraphicObject, style TextStyle) ([]G
 		if sizeChanged {
 			text.Size = style.Size
 		}
-		if known && (fontChanged || sizeChanged) {
+		if known && (fontChanged || sizeChanged || style.Reflow) {
 			if err := e.LayoutText(text, value, layout); err != nil {
 				return nil, err
 			}
@@ -458,15 +541,19 @@ func (e *Editor) replaceTextFont(text *TextObject, id string) error {
 	var missing []rune
 	for i := range transforms {
 		transform := &transforms[i]
-		if transform.CodeCount != 1 || transform.GlyphCount != 1 {
+		if transform.CodeCount != transform.GlyphCount {
 			return &EditError{Code: EditLayoutRequired, Err: fmt.Errorf("changing the font of combined glyphs requires explicit layout")}
 		}
-		char := chars[transform.CodePosition]
+		glyphs := make([]string, transform.CodeCount)
+		for j := range glyphs {
+			char := chars[transform.CodePosition+j]
 			glyph := font.GlyphIndex(char)
 			if glyph == 0 {
 				missing = append(missing, char)
 			}
-		transform.Glyphs = strconv.Itoa(int(glyph))
+			glyphs[j] = strconv.Itoa(int(glyph))
+		}
+		transform.Glyphs = strings.Join(glyphs, " ")
 	}
 	if err := missingGlyphError(id, missing); err != nil {
 		return err