From f5463b9479e00088121ca7085db1a17c0dbdf1e6 Mon Sep 17 00:00:00 2001
From: xiaoqidun <xiaoqidun@gmail.com>
Date: Tue, 13 Oct 2026 18:55:26 +0800
Subject: [PATCH] =?UTF-8?q?feat(=E6=9C=AF=E8=AF=AD=E6=96=87=E6=A1=88):=20?=
 =?UTF-8?q?=E7=BB=9F=E4=B8=80=E5=89=8D=E5=90=8E=E7=AB=AF=E6=9C=AF=E8=AF=AD?=
 =?UTF-8?q?=E4=B8=8E=E7=95=8C=E9=9D=A2=E6=96=87=E6=A1=88?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 assets/webui/index.html          | 14 +++++++-------
 assets/webui/ofdgo.css           | 30 ++++++++++++++++++++++++------
 assets/webui/ofdgo.js            | 24 +++++++++++++-----------
 internal/webui/webui.go          |  2 +-
 ofdgo_drawparam.go               |  2 +-
 ofdgo_editor_color.go            |  2 +-
 ofdgo_editor_composite_insert.go |  2 +-
 ofdgo_editor_resource_style.go   |  2 +-
 ofdgo_editor_style.go            |  1 +
 ofdgo_font_info.go               |  8 ++++----
 ofdgo_geom_stroke.go             |  4 ++--
 ofdgo_paint.go                   |  6 +++---
 ofdgo_renderer_geom_canvas.go    |  8 ++++----
 ofdgo_renderer_measure_canvas.go |  2 +-
 ofdgo_renderer_paint_canvas.go   |  4 ++--
 ofdgo_renderer_path_canvas.go    | 10 +++++-----
 ofdgo_res.go                     |  1 +
 17 files changed, 72 insertions(+), 50 deletions(-)

diff --git a/assets/webui/index.html b/assets/webui/index.html
index 75587aa..a3b9f46 100644
--- a/assets/webui/index.html
+++ b/assets/webui/index.html
@@ -227,19 +227,19 @@
 				<details id="objectGradientFields" hidden>
 					<summary>渐变</summary>
 					<div class="form-pair">
-						<div class="form-row"><label for="gradientTarget">作用</label><select id="gradientTarget"><option value="fill">填充</option><option value="stroke">描边</option></select></div>
+						<div class="form-row"><label for="gradientTarget">应用</label><select id="gradientTarget"><option value="fill">填充</option><option value="stroke">描边</option></select></div>
 						<div class="form-row"><label for="gradientKind">类型</label><select id="gradientKind"><option value="keep">保持</option><option value="linear">线性</option><option value="radial">径向</option></select></div>
 					</div>
 					<div id="gradientControls" hidden>
 						<div class="form-row"><label for="gradientAngle">角度</label><div class="form-unit"><input id="gradientAngle" type="number" step="any" value="0"><span>°</span></div></div>
 						<div class="gradient-stop-row gradient-stop-head"><span>颜色</span><span>位置%</span><span>透明%</span><span></span></div>
 						<div id="gradientStops"></div>
-						<button id="gradientAdd" class="small-button" type="button" title="添加色标" aria-label="添加色标">+</button>
+						<button id="gradientAdd" class="icon-button" type="button" title="添加色标" aria-label="添加色标">+</button>
 					</div>
 				</details>
 				<details id="objectPatternFields" hidden>
 					<summary>图案</summary>
-					<div class="form-row"><label for="patternTarget">作用</label><select id="patternTarget"><option value="fill">填充</option><option value="stroke">描边</option></select></div>
+					<div class="form-row"><label for="patternTarget">应用</label><select id="patternTarget"><option value="fill">填充</option><option value="stroke">描边</option></select></div>
 					<div class="form-pair">
 						<div class="form-row"><label for="patternWidth">宽度</label><div class="form-unit"><input id="patternWidth" type="number" min="0" step="any"><span>mm</span></div></div>
 						<div class="form-row"><label for="patternHeight">高度</label><div class="form-unit"><input id="patternHeight" type="number" min="0" step="any"><span>mm</span></div></div>
@@ -437,7 +437,7 @@
 				<label class="form-row"><span>标题</span><input id="infoTitle" type="text" autofocus></label>
 				<label class="form-row"><span>主题</span><input id="infoSubject" type="text"></label>
 				<label class="form-row"><span>作者</span><input id="infoAuthor" type="text"></label>
-				<details class="info-custom"><summary>扩展</summary><div id="infoCustomRows"></div><button id="infoCustomAdd" class="small-button" type="button" title="添加字段" aria-label="添加字段">+</button></details>
+				<details class="info-custom"><summary>扩展</summary><div id="infoCustomRows"></div><button id="infoCustomAdd" class="icon-button" type="button" title="添加字段" aria-label="添加字段">+</button></details>
 				<div class="form-actions"><div id="infoStatus" class="form-status" role="status"></div><button id="infoCancel" class="button" type="button">取消</button><button class="button" type="submit">确定</button></div>
 			</form>
 		</dialog>
@@ -559,8 +559,8 @@
 					<div class="form-row"><span>预览</span><div class="seal-position-options"><button id="signPick" class="button" type="button">定位</button><label><input id="signKeepRatio" type="checkbox" checked>等比</label></div></div>
 					<div class="form-row"><label for="signPlacement">位置</label><select id="signPlacement"><option value="normal">页面</option><option value="seam">骑缝</option></select></div>
 					<div class="form-row"><label for="signPages">页码</label><input id="signPages" type="text" autocomplete="off" spellcheck="false"></div>
-					<div class="form-row"><label for="signX">横坐标</label><div class="form-unit"><input id="signX" type="number" min="0" step="any" value="10" aria-label="横坐标（毫米）"><span>mm</span></div></div>
-					<div class="form-row"><label for="signY">纵坐标</label><div class="form-unit"><input id="signY" type="number" min="0" step="any" value="10" aria-label="纵坐标（毫米）"><span>mm</span></div></div>
+					<div class="form-row"><label for="signX">横向</label><div class="form-unit"><input id="signX" type="number" min="0" step="any" value="10" aria-label="横坐标（毫米）"><span>mm</span></div></div>
+					<div class="form-row"><label for="signY">纵向</label><div class="form-unit"><input id="signY" type="number" min="0" step="any" value="10" aria-label="纵坐标（毫米）"><span>mm</span></div></div>
 					<div class="form-row"><label for="signWidth">宽度</label><div class="form-unit"><input id="signWidth" type="number" min="0.01" step="any" value="40" aria-label="宽度（毫米）"><span>mm</span></div></div>
 					<div class="form-row"><label for="signHeight">高度</label><div class="form-unit"><input id="signHeight" type="number" min="0.01" step="any" value="40" aria-label="高度（毫米）"><span>mm</span></div></div>
 				</div>
@@ -788,7 +788,7 @@
 				</section>
 				<section class="doc-font-panel" aria-labelledby="docFontPanelTitle">
 					<div class="panel-row">
-						<div id="docFontPanelTitle" class="panel-title compact">OFD 字体</div>
+						<div id="docFontPanelTitle" class="panel-title compact">文档字体</div>
 						<span id="docFontSummary" class="count-pill">0</span>
 					</div>
 					<div id="docFontList" class="doc-font-list"></div>
diff --git a/assets/webui/ofdgo.css b/assets/webui/ofdgo.css
index 45f0616..cded1e5 100644
--- a/assets/webui/ofdgo.css
+++ b/assets/webui/ofdgo.css
@@ -1214,7 +1214,7 @@ button:not(:disabled):hover {
 }
 
 .info-custom-row input,
-.gradient-stop-row input,
+.gradient-stop-row input[type="number"],
 .structure-attribute > input,
 .form-row input[type="text"],
 .form-row input[type="password"],
@@ -1260,8 +1260,8 @@ button:not(:disabled):hover {
 .info-custom-row {
 	display: grid;
 	grid-template-columns: minmax(0, 1fr) minmax(0, 2fr) var(--control-height);
-	gap: 6px;
-	margin: 6px 0;
+	gap: 8px;
+	margin: 8px 0;
 }
 
 #infoCustomRows > :first-child {
@@ -1271,8 +1271,8 @@ button:not(:disabled):hover {
 .gradient-stop-row {
 	display: grid;
 	grid-template-columns: 44px minmax(0, 1fr) minmax(0, 1fr) var(--control-height);
-	gap: 6px;
-	margin: 6px 0;
+	gap: 8px;
+	margin: 8px 0;
 	align-items: center;
 }
 
@@ -1280,9 +1280,27 @@ button:not(:disabled):hover {
 	font-size: 12px;
 }
 
+.gradient-stop-head,
+#gradientStops {
+	overflow-y: auto;
+	scrollbar-gutter: stable;
+}
+
 #gradientStops {
 	max-height: 180px;
-	overflow-y: auto;
+	margin-bottom: 8px;
+}
+
+#gradientStops > :first-child {
+	margin-top: 0;
+}
+
+#gradientStops > :last-child {
+	margin-bottom: 0;
+}
+
+.gradient-stop-row .color-input {
+	width: 100%;
 }
 
 #infoCustomRows :focus-visible,
diff --git a/assets/webui/ofdgo.js b/assets/webui/ofdgo.js
index aa3643d..27b17fb 100644
--- a/assets/webui/ofdgo.js
+++ b/assets/webui/ofdgo.js
@@ -887,7 +887,7 @@ function addCustomDataRow(field = {Name: "", Value: ""}, sourceIndex) {
 	}
 	const remove = document.createElement("button");
 	remove.type = "button";
-	remove.className = "small-button";
+	remove.className = "icon-button";
 	remove.textContent = "×";
 	remove.title = "删除字段";
 	remove.setAttribute("aria-label", "删除字段");
@@ -2045,6 +2045,7 @@ function addGradientStop(position, color, transparency, source) {
 	for (const [type, value, label] of [["color", color, "色标颜色"], ["number", position, "色标位置"], ["number", transparency, "色标透明度"]]) {
 		const input = document.createElement("input");
 		input.type = type;
+		if (type === "color") input.className = "color-input";
 		input.value = value;
 		input.disabled = el.gradientKind.value === "keep";
 		input.setAttribute("aria-label", label);
@@ -2054,7 +2055,7 @@ function addGradientStop(position, color, transparency, source) {
 	}
 	const remove = document.createElement("button");
 	remove.type = "button";
-	remove.className = "small-button";
+	remove.className = "icon-button";
 	remove.textContent = "×";
 	remove.title = "删除色标";
 	remove.setAttribute("aria-label", "删除色标");
@@ -5619,8 +5620,8 @@ function renderStyleResourceSettings(kind) {
 		}
 		settingsField(content, "斜体", "Italic", value.Italic, "checkbox");
 		settingsSelect(content, "端点", "Cap", [["", "继承"], ["Butt", "平头"], ["Round", "圆头"], ["Square", "方头"]], value.Cap || "");
-		settingsSelect(content, "连接", "Join", [["", "继承"], ["Miter", "尖角"], ["Round", "圆角"], ["Bevel", "斜角"]], value.Join || "");
-		settingsField(content, "虚线", "DashPattern", value.DashPattern || "");
+		settingsSelect(content, "转角", "Join", [["", "继承"], ["Miter", "尖角"], ["Round", "圆角"], ["Bevel", "斜角"]], value.Join || "");
+		settingsField(content, "间隔", "DashPattern", value.DashPattern || "").title = "虚线间隔";
 		settingsField(content, "偏移", "DashOffset", value.DashOffset ?? "", "number", "mm");
 		for (const [key, label] of [["FillColor", "填充"], ["StrokeColor", "描边"]]) {
 			settingsSelect(content, label, key + "Mode", [["keep", "原有"], ["inherit", "继承"], ["solid", "颜色"]], "keep");
@@ -5641,7 +5642,7 @@ function renderStyleResourceSettings(kind) {
 	if (kind === "ColorSpace") {
 		settingsSelect(binding, "应用", "PaintTarget", [["fill", "填充"], ["stroke", "描边"]], "fill");
 		settingsSelect(binding, "方式", "PaintMode", [["value", "分量"], ["index", "索引"]], "value");
-		settingsField(binding, "颜色值", "PaintValue", value.Type === "CMYK" ? `0 0 0 ${2 ** (value.BitsPerComponent || 8) - 1}` : value.Type === "GRAY" ? "0" : "0 0 0");
+		settingsField(binding, "色值", "PaintValue", value.Type === "CMYK" ? `0 0 0 ${2 ** (value.BitsPerComponent || 8) - 1}` : value.Type === "GRAY" ? "0" : "0 0 0");
 	}
 	const apply = settingsButton("应用", () => applyStyleResource(kind), !objects.value, "Apply", group.actions);
 	const unbind = kind === "DrawParam" ? settingsButton("解绑", () => applyStyleResource(kind, true), !objects.value, "Unbind", group.actions) : null;
@@ -5784,7 +5785,8 @@ function renderTemplateSettings() {
 		settingsElements.Content.append(source);
 	}
 	settingsPages(source, "SourcePage", settings.page);
-	document.querySelector("#settingsSourcePage").closest("label").firstElementChild.textContent = "来源页";
+	document.querySelector("#settingsSourcePage").closest("label").firstElementChild.textContent = "来源";
+	document.querySelector("#settingsSourcePage").setAttribute("aria-label", "来源页");
 	const write = async (operation, order = 0) => {
 		if (operation === "replace" && !window.confirm("替换模板内容？当前文档中引用此模板的页面将同步更新。")) return;
 		const selected = settings.selected;
@@ -6626,7 +6628,7 @@ function updateSignPlacement() {
 		input.disabled = !stamp;
 		input.required = stamp;
 	}
-	document.querySelector('label[for="signX"]').textContent = el.signPlacement.value === "seam" ? "右侧内缩" : "横坐标";
+	document.querySelector('label[for="signX"]').textContent = el.signPlacement.value === "seam" ? "右侧内缩" : "横向";
 	el.signX.setAttribute("aria-label", el.signPlacement.value === "seam" ? "右侧内缩（毫米）" : "横坐标（毫米）");
 }
 
@@ -7354,7 +7356,7 @@ function createFlowShell(page) {
 	surface.className = "page-surface";
 	const placeholder = document.createElement("div");
 	placeholder.className = "page-placeholder";
-	placeholder.textContent = `第 ${page.index + 1} 页`;
+	placeholder.textContent = `第${page.index + 1}页`;
 	shell.append(surface, placeholder);
 	layoutPageShell(shell, page);
 	return shell;
@@ -8728,7 +8730,7 @@ function renderSearchResults() {
 		button.dataset.matchIndex = String(i);
 		const page = document.createElement("span");
 		page.className = "search-page";
-		page.textContent = `第 ${match.page + 1} 页`;
+		page.textContent = `第${match.page + 1}页`;
 		const text = document.createElement("span");
 		const mark = document.createElement("mark");
 		mark.textContent = match.text;
@@ -8922,7 +8924,7 @@ function createOutlineList(outlines, path = []) {
 			const page = document.createElement("span");
 			page.className = "outline-page";
 			page.textContent = String(outline.page);
-			page.setAttribute("aria-label", `第 ${outline.page} 页`);
+			page.setAttribute("aria-label", `第${outline.page}页`);
 			link.append(page);
 		}
 		if (outline.actionCount || outline.page || state.editing) {
@@ -9168,7 +9170,7 @@ function createThumbnail(page) {
 
 	const label = document.createElement("span");
 	label.className = "thumb-label";
-	label.textContent = `第 ${page.index + 1} 页`;
+	label.textContent = `第${page.index + 1}页`;
 
 	const size = document.createElement("span");
 	size.className = "thumb-size";
diff --git a/internal/webui/webui.go b/internal/webui/webui.go
index 72a6711..64aedf8 100644
--- a/internal/webui/webui.go
+++ b/internal/webui/webui.go
@@ -39,7 +39,7 @@ type OpenOptions struct {
 // FontFile 字体文件
 type FontFile = ofdgo.FontFile
 
-// FontInfo OFD字体信息
+// FontInfo 文档字体信息
 type FontInfo = ofdgo.FontInfo
 
 // Session WebUI文档会话
diff --git a/ofdgo_drawparam.go b/ofdgo_drawparam.go
index 1916ccc..c13aa4a 100644
--- a/ofdgo_drawparam.go
+++ b/ofdgo_drawparam.go
@@ -17,7 +17,7 @@ package ofdgo
 // defaultPathLineWidth 为默认描边宽度，单位为毫米
 const defaultPathLineWidth = 0.353
 
-// defaultMiterLimit 为默认尖角限制
+// defaultMiterLimit 为默认尖角截断值
 const defaultMiterLimit = 3.528
 
 // mergeGraphicObjectAlpha 合并图形对象透明度
diff --git a/ofdgo_editor_color.go b/ofdgo_editor_color.go
index f5301d0..9769052 100644
--- a/ofdgo_editor_color.go
+++ b/ofdgo_editor_color.go
@@ -109,7 +109,7 @@ func (e *Editor) AddColorSpace(space ColorSpace, profile []byte) (string, error)
 
 // GradientStops 解析当前文档的渐变分段，保留顺序并合并透明度
 // 入参: segments 渐变分段, alpha 外层透明度
-// 返回: []ColorStop 后端无关的色标, error 颜色解析错误
+// 返回: []ColorStop 后端无关的渐变色标, error 颜色解析错误
 func (e *Editor) GradientStops(segments []ShdSegment, alpha *int) ([]ColorStop, error) {
 	positions := gradientPositions(segments)
 	stops := make([]ColorStop, len(segments))
diff --git a/ofdgo_editor_composite_insert.go b/ofdgo_editor_composite_insert.go
index 8e03cef..e56547f 100644
--- a/ofdgo_editor_composite_insert.go
+++ b/ofdgo_editor_composite_insert.go
@@ -175,7 +175,7 @@ func (e *Editor) wrapCompositePath(renderer *Renderer, node *editorCompositeNode
 	return e.vectorInstance(renderer, []*editorCompositeNode{node})
 }
 
-// isolateCompositeStyle 固定对象的绘制参数，避免目标容器改变颜色、虚线和线帽
+// isolateCompositeStyle 固定对象的绘制参数，避免目标容器改变颜色、虚线和端点样式
 // 入参: node 页面坐标中的对象节点
 // 返回: error 错误信息
 func (e *Editor) isolateCompositeStyle(node *editorCompositeNode) error {
diff --git a/ofdgo_editor_resource_style.go b/ofdgo_editor_resource_style.go
index 498ed12..1c93302 100644
--- a/ofdgo_editor_resource_style.go
+++ b/ofdgo_editor_resource_style.go
@@ -443,7 +443,7 @@ func resourceColorNode(node *editorXML) bool {
 
 // validateResourceColors 校验显式及默认颜色空间的既有颜色，防止位深或调色板更新使引用失效
 // 入参: ctx 取消上下文, catalog 当前资源目录, space 替换后的颜色空间
-// 返回: error 不兼容的颜色值或调色板索引
+// 返回: error 不兼容的色值或调色板索引
 func validateResourceColors(ctx context.Context, catalog *resourceCatalog, space ColorSpace) error {
 	doc, err := catalog.scan.reader.DocContext(ctx)
 	if err != nil {
diff --git a/ofdgo_editor_style.go b/ofdgo_editor_style.go
index dbd76d2..de936b9 100644
--- a/ofdgo_editor_style.go
+++ b/ofdgo_editor_style.go
@@ -24,6 +24,7 @@ import (
 
 // ObjectStyle 对象外观，nil字段保持原值，颜色的Alpha为nil时保留原颜色透明度
 // StyleObjects使用对象坐标毫米，StyleCompositeObjects的线宽、虚线长度及偏移使用页面毫米
+// Cap为端点样式，Join为转角样式，MiterLimit为尖角截断值，DashPattern为虚线间隔序列
 type ObjectStyle struct {
 	Alpha       *int
 	Fill        *bool
diff --git a/ofdgo_font_info.go b/ofdgo_font_info.go
index a179c51..021a940 100644
--- a/ofdgo_font_info.go
+++ b/ofdgo_font_info.go
@@ -35,7 +35,7 @@ const (
 	FontStatusMissing = "missing"
 )
 
-// FontInfo OFD字体诊断信息，MatchedFace为实际匹配字体及原文件中的零起始索引，无法读取时为空
+// FontInfo 文档字体诊断信息，MatchedFace为实际匹配字体及原文件中的零起始索引，无法读取时为空
 type FontInfo struct {
 	ID          string    `json:"id"`
 	FontName    string    `json:"fontName"`
@@ -141,7 +141,7 @@ func (r *Reader) fontDefinition(id string) *Font {
 	return font
 }
 
-// FontInfos 获取OFD字体诊断信息
+// FontInfos 获取文档字体诊断信息
 // 返回: []FontInfo 字体诊断列表, error 错误信息
 func (r *Renderer) FontInfos() ([]FontInfo, error) {
 	scanner, err := r.ScanFontInfos()
@@ -202,7 +202,7 @@ func (s *FontInfoScanner) Infos() ([]FontInfo, error) {
 	return s.renderer.fontInfos(s.usage)
 }
 
-// FontInfosFromPages 从页面内容获取OFD字体诊断信息
+// FontInfosFromPages 从页面内容获取文档字体诊断信息
 // 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) {
@@ -291,7 +291,7 @@ func (r *Renderer) fontInfoDocument() (*Document, error) {
 	return doc, nil
 }
 
-// fontInfos 获取OFD字体诊断信息
+// fontInfos 获取文档字体诊断信息
 // 入参: usage 字体使用次数
 // 返回: []FontInfo 字体诊断列表, error 错误信息
 func (r *Renderer) fontInfos(usage map[string]int) ([]FontInfo, error) {
diff --git a/ofdgo_geom_stroke.go b/ofdgo_geom_stroke.go
index ae16693..23655d5 100644
--- a/ofdgo_geom_stroke.go
+++ b/ofdgo_geom_stroke.go
@@ -26,7 +26,7 @@ type geometryPolyline struct {
 	direction Point
 }
 
-// Stroke 将曲线、虚线及线帽连接转换为非零填充轮廓
+// Stroke 按端点和转角样式将曲线、虚线转换为非零填充轮廓
 // 曲线按Tolerance展开，默认误差为0.001毫米，重叠轮廓保持同向绕数
 // 结果未做布尔整理，按非零规则填充，区域运算需能处理重叠子路径的后端
 // 入参: options 描边样式
@@ -283,7 +283,7 @@ func (line geometryPolyline) dash(pattern []float64, total, offset float64) ([]g
 
 // stroke 追加同向矩形、连接楔形及圆盘组成的非零填充区域
 // 入参: result 已有轮廓, options 描边样式
-// 返回: GeometryPath 填充轮廓, error 不支持的退化方形线帽
+// 返回: GeometryPath 填充轮廓, error 不支持的退化方头端点
 func (line geometryPolyline) stroke(result GeometryPath, options StrokeOptions) (GeometryPath, error) {
 	half := options.Width / 2
 	polygon := func(points ...Point) {
diff --git a/ofdgo_paint.go b/ofdgo_paint.go
index ea8fbc2..64f23ab 100644
--- a/ofdgo_paint.go
+++ b/ofdgo_paint.go
@@ -37,7 +37,7 @@ func (r *Renderer) ResolveColor(value string, index *int, space string, alpha *i
 
 // GradientStops 解析OFD渐变分段的位置与透明度，返回独立数据并保留原分段顺序
 // 入参: segments 渐变分段, alpha 透明度
-// 返回: []ColorStop 后端无关的渐变分段
+// 返回: []ColorStop 后端无关的渐变色标
 func (r *Renderer) GradientStops(segments []ShdSegment, alpha *int) []ColorStop {
 	var gradient []ColorStop
 	positions := gradientPositions(segments)
@@ -49,7 +49,7 @@ func (r *Renderer) GradientStops(segments []ShdSegment, alpha *int) []ColorStop
 }
 
 // parseColorWithAlpha 解析带透明度的颜色
-// 入参: value 颜色值, index 调色板索引, space 颜色空间标识, alpha 透明度
+// 入参: value 色值, index 调色板索引, space 颜色空间标识, alpha 透明度
 // 返回: color.Color 颜色对象
 func (r *Renderer) parseColorWithAlpha(value string, index *int, space string, alpha *int) color.Color {
 	kind, values := r.colorComponents(value, index, space)
@@ -89,7 +89,7 @@ func (r *Renderer) parseColorWithAlpha(value string, index *int, space string, a
 }
 
 // colorComponents 读取颜色空间及归一化分量，保留源位深供渐变插值
-// 入参: value 颜色值, index 调色板索引, space 颜色空间标识
+// 入参: value 色值, index 调色板索引, space 颜色空间标识
 // 返回: string 颜色模型, [4]float64 单位分量
 func (r *Renderer) colorComponents(value string, index *int, space string) (string, [4]float64) {
 	cs := r.colorDefinition(space)
diff --git a/ofdgo_renderer_geom_canvas.go b/ofdgo_renderer_geom_canvas.go
index 9e2fcb7..7282414 100644
--- a/ofdgo_renderer_geom_canvas.go
+++ b/ofdgo_renderer_geom_canvas.go
@@ -207,7 +207,7 @@ func canvasNativeStroke(geometry GeometryBackend) bool {
 }
 
 // canvasStrokeOptions 转换Canvas描边样式，虚线由调用方传入
-// 入参: width 描边宽度, cap 线帽, join 连接, tolerance 展开误差
+// 入参: width 线宽, cap 端点样式, join 转角样式, tolerance 展开误差
 // 返回: StrokeOptions 公共描边样式
 func canvasStrokeOptions(width float64, cap canvas.Capper, join canvas.Joiner, tolerance float64) StrokeOptions {
 	options := StrokeOptions{Width: width, Cap: "Butt", Join: "Miter", MiterLimit: defaultMiterLimit, Tolerance: tolerance}
@@ -274,14 +274,14 @@ func canvasFillClip(clip *canvas.Path) bool {
 }
 
 // strokeCanvasPath 将文字和复杂画刷的描边交给配置的几何后端
-// 入参: path Canvas路径, width 描边宽度, cap 线帽, join 连接
+// 入参: path Canvas路径, width 线宽, cap 端点样式, join 转角样式
 // 返回: *canvas.Path 描边轮廓
 func (r *Renderer) strokeCanvasPath(path *canvas.Path, width float64, cap canvas.Capper, join canvas.Joiner) *canvas.Path {
 	return r.strokeDashedCanvasPath(path, width, cap, join, 0, nil, false)
 }
 
-// strokeDashedCanvasPath 通过公共几何后端展开虚线和线帽，保留零长度绘制段
-// 入参: path 路径, width 线宽, cap 线帽, join 连接, offset 虚线偏移, dashes 虚线数组, fill 是否直接填充或凸窗口裁剪
+// strokeDashedCanvasPath 通过公共几何后端展开虚线和端点样式，保留零长度绘制段
+// 入参: path 路径, width 线宽, cap 端点样式, join 转角样式, offset 虚线偏移, dashes 虚线间隔序列, fill 是否直接填充或凸窗口裁剪
 // 返回: *canvas.Path 描边填充轮廓
 func (r *Renderer) strokeDashedCanvasPath(path *canvas.Path, width float64, cap canvas.Capper, join canvas.Joiner, offset float64, dashes []float64, fill bool) *canvas.Path {
 	geometry, err := r.Geometry()
diff --git a/ofdgo_renderer_measure_canvas.go b/ofdgo_renderer_measure_canvas.go
index 526bad7..9dbbeab 100644
--- a/ofdgo_renderer_measure_canvas.go
+++ b/ofdgo_renderer_measure_canvas.go
@@ -99,7 +99,7 @@ func (r *boundsRenderer) Size() (float64, float64) {
 	return 0, 0
 }
 
-// RenderPath 收集填充与描边范围，保持线帽、连接和虚线语义
+// RenderPath 收集填充与描边范围，保持端点、转角和虚线语义
 // 入参: path 路径, style 绘制样式, m 变换矩阵
 func (r *boundsRenderer) RenderPath(path *canvas.Path, style canvas.Style, m canvas.Matrix) {
 	if style.HasFill() {
diff --git a/ofdgo_renderer_paint_canvas.go b/ofdgo_renderer_paint_canvas.go
index e92a45a..9fb6e44 100644
--- a/ofdgo_renderer_paint_canvas.go
+++ b/ofdgo_renderer_paint_canvas.go
@@ -49,8 +49,8 @@ func (r *Renderer) parseStrokePaint(strokeColor *StrokeColor, x, y, pageH float6
 }
 
 // canvasGradient 将公共颜色节点转换为Canvas渐变
-// 入参: stops 渐变分段
-// 返回: canvas.Grad 渐变分段
+// 入参: stops 渐变色标
+// 返回: canvas.Grad 渐变色标
 func canvasGradient(stops []ColorStop) canvas.Grad {
 	var gradient canvas.Grad
 	for _, stop := range stops {
diff --git a/ofdgo_renderer_path_canvas.go b/ofdgo_renderer_path_canvas.go
index 3cac9c2..afb6b70 100644
--- a/ofdgo_renderer_path_canvas.go
+++ b/ofdgo_renderer_path_canvas.go
@@ -75,9 +75,9 @@ func (s *pathStyle) applyStrokeColor(r *Renderer, stroke *StrokeColor, bx, by, p
 	s.strokePaint = r.parseStrokePaint(strokeColorNode, bx, by, pageH)
 }
 
-// pathLineCap 转换线帽样式
-// 入参: cap 线帽名称, fallback 默认线帽
-// 返回: canvas.Capper 线帽样式
+// pathLineCap 转换端点样式
+// 入参: cap 端点样式名称, fallback 默认端点样式
+// 返回: canvas.Capper 端点样式
 func pathLineCap(cap string, fallback canvas.Capper) canvas.Capper {
 	switch cap {
 	case "Butt":
@@ -90,8 +90,8 @@ func pathLineCap(cap string, fallback canvas.Capper) canvas.Capper {
 	return fallback
 }
 
-// applyLineJoin 应用线连接样式及尖角限制
-// 入参: join 线连接名称, limit 尖角限制, explicit 是否显式指定零截断值
+// applyLineJoin 应用转角样式及尖角截断值
+// 入参: join 转角样式名称, limit 尖角截断值, explicit 是否显式指定零截断值
 func (s *pathStyle) applyLineJoin(join string, limit float64, explicit bool) {
 	if limit > 0 || explicit {
 		s.miterLimit = limit
diff --git a/ofdgo_res.go b/ofdgo_res.go
index 4acd77f..1097687 100644
--- a/ofdgo_res.go
+++ b/ofdgo_res.go
@@ -84,6 +84,7 @@ type DrawParams struct {
 }
 
 // DrawParam 绘制参数
+// Cap为端点样式，Join为转角样式，MiterLimit为尖角截断值，DashPattern为虚线间隔序列
 // MiterLimitSet为true时，零截断值覆盖继承值，否则零值表示未指定
 type DrawParam struct {
 	ID             string       `xml:"ID,attr"`