实现字体子系统：注册表枚举中间件、前端 FontFace 挂载与文字面板
This commit is contained in:
@@ -1,21 +1,255 @@
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<script setup lang="ts">
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import { computed, ref, watch } from "vue";
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import { Shadow, Textbox } from "fabric";
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import { useEditor } from "@/editor/useEditor";
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import { ensureFontLoaded, fonts, listFonts, loadingFonts } from "@/fonts/useFonts";
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/**
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* 【T2 待实现 — 文字面板】
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* 【T2 — 文字面板】选中 Textbox 时显示。
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*
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* 选中 Textbox 时显示。要有：字体下拉（来自 useFonts）、字号、字重/颜色、
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* 对齐、行高、描边与阴影（现有封面靠这两样保证白字在图上读得清）。
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* 字体下拉列出 `useFonts` 里的本机字体，选中即挂载并应用到当前文本的 `fontFamily`；
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* 字号、颜色、对齐、行高、描边（stroke/strokeWidth）与阴影（shadow）。
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* 描边和阴影是刚需：现有封面全靠它们保证白字压在图上还读得清。
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*
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* 拿当前选中对象用 `useEditor().activeObject`，改完记得 `canvas.requestRenderAll()`。
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* 画布选中对象是 Fabric 实例，不是响应式的，所以这里用一批本地 ref 做 UI 状态：
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* 选中对象变化时从对象同步进来，用户改动时写回对象并 `requestRenderAll()`。
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*/
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const { activeObject, getCanvas } = useEditor();
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const textObj = computed<Textbox | null>(() =>
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activeObject.value instanceof Textbox ? activeObject.value : null,
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);
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// 本地 UI 状态。
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const fontSize = ref(40);
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const lineHeight = ref(1.16);
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const fill = ref("#ffffff");
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const textAlign = ref("center");
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const stroke = ref("");
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const strokeWidth = ref(0);
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const shadowEnabled = ref(false);
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const shadowColor = ref("#000000");
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const shadowBlur = ref(0);
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const shadowOffsetX = ref(0);
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const shadowOffsetY = ref(0);
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/** 选中对象变化 → 把对象上的值同步进 UI。 */
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function syncFromObject() {
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const obj = textObj.value;
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if (!obj) return;
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fontSize.value = typeof obj.fontSize === "number" ? obj.fontSize : 40;
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lineHeight.value = typeof obj.lineHeight === "number" ? obj.lineHeight : 1.16;
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fill.value = typeof obj.fill === "string" ? obj.fill : "#ffffff";
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textAlign.value = obj.textAlign ?? "left";
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stroke.value = typeof obj.stroke === "string" ? obj.stroke : "";
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strokeWidth.value = typeof obj.strokeWidth === "number" ? obj.strokeWidth : 0;
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const s = obj.shadow;
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shadowEnabled.value = !!s;
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shadowColor.value = typeof s?.color === "string" ? s.color : "#000000";
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shadowBlur.value = typeof s?.blur === "number" ? s.blur : 0;
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shadowOffsetX.value = typeof s?.offsetX === "number" ? s.offsetX : 0;
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shadowOffsetY.value = typeof s?.offsetY === "number" ? s.offsetY : 0;
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}
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watch(textObj, syncFromObject, { immediate: true });
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/** 用户改动 → 写回对象并重绘。 */
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function applyToObject() {
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const obj = textObj.value;
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if (!obj) return;
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const patch: Record<string, unknown> = {
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fill: fill.value,
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textAlign: textAlign.value,
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stroke: stroke.value || null,
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};
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const fs = Number(fontSize.value);
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if (Number.isFinite(fs) && fs > 0) patch.fontSize = fs;
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const lh = Number(lineHeight.value);
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if (Number.isFinite(lh) && lh > 0) patch.lineHeight = lh;
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const sw = Number(strokeWidth.value);
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if (Number.isFinite(sw) && sw >= 0) patch.strokeWidth = sw;
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let shadow: Shadow | null = null;
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if (shadowEnabled.value) {
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const blur = Number(shadowBlur.value);
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const ox = Number(shadowOffsetX.value);
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const oy = Number(shadowOffsetY.value);
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shadow = new Shadow({
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color: shadowColor.value || "#000000",
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blur: Number.isFinite(blur) && blur >= 0 ? blur : 0,
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offsetX: Number.isFinite(ox) ? ox : 0,
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offsetY: Number.isFinite(oy) ? oy : 0,
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});
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}
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patch.shadow = shadow;
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obj.set(patch);
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getCanvas().requestRenderAll();
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}
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watch(
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[
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fontSize,
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lineHeight,
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fill,
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textAlign,
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stroke,
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strokeWidth,
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shadowEnabled,
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shadowColor,
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shadowBlur,
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shadowOffsetX,
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shadowOffsetY,
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],
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applyToObject,
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);
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/** 当前文本的 fontFamily 对应到列表里的 id；找不到（如默认 Times New Roman）就留空。 */
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const selectedFontId = computed(() => {
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const fam = textObj.value?.fontFamily;
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if (!fam) return "";
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return fonts.value.find((f) => f.family === fam)?.id ?? "";
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});
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async function pickFont(id: string) {
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const entry = fonts.value.find((f) => f.id === id);
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const obj = textObj.value;
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if (!entry || !obj) return;
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obj.set("fontFamily", entry.family);
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getCanvas().requestRenderAll();
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await ensureFontLoaded(entry);
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}
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listFonts();
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</script>
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<template>
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<p class="todo">T2 待实现：字体选择与文字样式</p>
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<div class="text-panel">
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<div class="field">
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<label>字体</label>
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<select :value="selectedFontId" @change="pickFont(($event.target as HTMLSelectElement).value)">
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<option value="" disabled>— 选择本机字体 —</option>
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<option v-for="f in fonts" :key="f.id" :value="f.id" :disabled="f.needsExtraction">
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{{ f.family }}{{ f.needsExtraction ? "（.ttc 合集，暂不支持）" : "" }}
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</option>
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</select>
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<p v-if="loadingFonts" class="meta">正在读取本机字体…</p>
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<p v-else-if="fonts.length === 0" class="meta">未找到可用字体（本机需装 .ttf / .otf 字体）。</p>
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</div>
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<div class="field row">
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<div class="grow">
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<label>字号</label>
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<input type="number" v-model.number="fontSize" min="1" step="1" />
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</div>
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<div class="grow">
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<label>行高</label>
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<input type="number" v-model.number="lineHeight" min="0.1" step="0.1" />
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</div>
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</div>
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<div class="field row">
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<div class="grow">
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<label>颜色</label>
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<input type="color" v-model="fill" />
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</div>
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<div class="grow">
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<label>对齐</label>
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<select v-model="textAlign">
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<option value="left">左对齐</option>
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<option value="center">居中</option>
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<option value="right">右对齐</option>
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<option value="justify">两端对齐</option>
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</select>
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</div>
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</div>
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<fieldset class="group">
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<legend>描边</legend>
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<div class="field row">
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<div class="grow">
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<label>颜色</label>
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<input type="color" v-model="stroke" />
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</div>
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<div class="grow">
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<label>宽度</label>
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<input type="number" v-model.number="strokeWidth" min="0" step="1" />
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</div>
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</div>
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</fieldset>
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<fieldset class="group">
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<legend>阴影</legend>
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<label class="check">
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<input type="checkbox" v-model="shadowEnabled" />
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启用阴影
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</label>
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<template v-if="shadowEnabled">
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<div class="field">
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<label>颜色</label>
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<input type="color" v-model="shadowColor" />
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</div>
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<div class="field row">
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<div class="grow">
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<label>模糊</label>
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<input type="number" v-model.number="shadowBlur" min="0" step="1" />
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</div>
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<div class="grow">
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<label>水平偏移</label>
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<input type="number" v-model.number="shadowOffsetX" step="1" />
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</div>
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<div class="grow">
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<label>垂直偏移</label>
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<input type="number" v-model.number="shadowOffsetY" step="1" />
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</div>
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</div>
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</template>
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</fieldset>
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</div>
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</template>
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<style scoped>
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.todo {
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.text-panel {
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display: flex;
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flex-direction: column;
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}
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.grow {
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flex: 1;
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min-width: 0;
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}
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.meta {
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color: var(--fg-dim);
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margin: 0;
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margin: 6px 0 0;
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line-height: 1.6;
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}
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.group {
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border: 1px solid var(--line);
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border-radius: var(--radius);
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padding: 8px 10px 4px;
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margin: 0 0 10px;
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}
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.group legend {
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padding: 0 4px;
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color: var(--fg-dim);
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font-size: 12px;
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}
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.check {
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display: flex;
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align-items: center;
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gap: 6px;
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color: var(--fg);
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cursor: pointer;
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margin-bottom: 8px;
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}
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.check input {
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width: auto;
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}
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</style>
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+45
-7
@@ -1,23 +1,61 @@
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import { ref } from "vue";
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import type { FontEntry } from "@/types";
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import { useEditor } from "@/editor/useEditor";
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/**
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* 【T2 待实现 — 字体子系统】
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* 【T2 — 字体子系统】前端这一半。
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*
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* 前端这一半：向 `/__fonts` 取列表，选中某款时向 `/__fonts/:id` 取文件，
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* 向 `/__fonts` 取本机字体列表，选中某款时向 `/__fonts/:id` 取字体文件，
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* 用 `FontFace` API 动态挂载到 `document.fonts`，之后 Fabric 的 Textbox 就能用
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* `fontFamily: entry.family` 渲染。
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*
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* 注意 Fabric 在字体真正 ready 之前渲染会退到 fallback 字形，
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* 挂载后要 `await document.fonts.load(...)` 再 `canvas.requestRenderAll()`。
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* Fabric 在字体真正 ready 之前渲染会退到 fallback 字形（看起来像没生效），
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* 所以挂载后要 `await document.fonts.load(...)`，再 `canvas.requestRenderAll()` 重绘。
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*/
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export const fonts = ref<FontEntry[]>([]);
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export const loadingFonts = ref(false);
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const loaded = new Set<string>();
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export async function listFonts(): Promise<FontEntry[]> {
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throw new Error("T2 未实现：listFonts");
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if (fonts.value.length > 0) return fonts.value;
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loadingFonts.value = true;
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try {
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const res = await fetch("/__fonts");
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if (!res.ok) throw new Error(`取字体列表失败：${res.status}`);
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const data = (await res.json()) as { fonts: FontEntry[] };
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fonts.value = data.fonts ?? [];
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return fonts.value;
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} finally {
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loadingFonts.value = false;
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}
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}
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export async function ensureFontLoaded(_entry: FontEntry): Promise<void> {
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throw new Error("T2 未实现：ensureFontLoaded");
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export async function ensureFontLoaded(entry: FontEntry): Promise<void> {
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// 同一款字体不重复加载。.ttc 是合集包，浏览器不能直接当 webfont，跳过。
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if (loaded.has(entry.id) || entry.needsExtraction) return;
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loadingFonts.value = true;
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try {
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const res = await fetch(`/__fonts/${entry.id}`);
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if (!res.ok) throw new Error(`取字体文件失败：${res.status}`);
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const data = await res.arrayBuffer();
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const face = new FontFace(entry.family, data, {
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style: "normal",
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weight: "normal",
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});
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await face.load();
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document.fonts.add(face);
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// 强制浏览器把这款字体真正纳入可用集合，避免 Fabric 退到 fallback 字形。
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await document.fonts.load(`16px "${entry.family}"`);
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loaded.add(entry.id);
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// 字体 ready 后重绘画布，否则画布上的字还停在旧字形。
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useEditor().canvas.value?.requestRenderAll();
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} finally {
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loadingFonts.value = false;
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}
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}
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@@ -1,28 +1,240 @@
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import { execFile } from "node:child_process";
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import { createHash } from "node:crypto";
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import { existsSync } from "node:fs";
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import { readFile, unlink } from "node:fs/promises";
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import { tmpdir } from "node:os";
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import { extname, join } from "node:path";
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import { promisify } from "node:util";
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import type { Plugin } from "vite";
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import type { FontEntry, FontListResponse } from "@/types";
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/**
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* 【T2 待实现 — 字体子系统】
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* 【T2 — 字体子系统】Vite 开发服务器中间件。
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*
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* Vite 开发服务器中间件，给前端提供本机安装的字体。两个接口:
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* 给前端提供本机安装的字体。两个接口:
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*
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* GET /__fonts -> FontListResponse（见 src/types.ts）
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* GET /__fonts/:id -> 字体文件二进制，Content-Type 按 ext 给
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*
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* 枚举来源是 Windows 注册表的两个键（本机实测共 651 条）:
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* HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Fonts 系统字体，值是文件名，目录 C:\Windows\Fonts
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* HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Fonts 系统字体，值多为文件名，目录 C:\Windows\Fonts
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* HKCU\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Fonts 用户字体，值多为绝对路径
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*
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* 注意 `.ttc` 是合集包（如 msyh.ttc 里有微软雅黑的多个 face），浏览器不能直接当 webfont 用，
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* 需要抽出单个 face 再返回；`FontEntry.needsExtraction` 标记这种情况。
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* 读注册表用 PowerShell `Get-ItemProperty` 并让脚本把结果写成 UTF-8 JSON 临时文件——
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* 中文值名在控制台管道里会随 codepage 乱码，写文件最稳。
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*
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* `.ttc` 是合集包（如 msyh.ttc 里有微软雅黑的多个 face），浏览器不能直接当 webfont 用。
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* 第一版不抽出 face，只把 `needsExtraction` 标成 true，前端据此在下拉里禁用。
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*
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* 只在 `apply: "serve"` 下生效，构建产物里不存在这两个接口。
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*/
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const execFileAsync = promisify(execFile);
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/** 浏览器可直接当 webfont 用的后缀（ttc 会被标记但不禁列表）。 */
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const FONT_EXTS = new Set(["ttf", "otf", "ttc", "woff", "woff2"]);
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const CONTENT_TYPES: Record<string, string> = {
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ttf: "font/ttf",
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otf: "font/otf",
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ttc: "font/collection",
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woff: "font/woff",
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woff2: "font/woff2",
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};
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/**
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* 读两个注册表键，把「值名 → 文件路径」转成 JSON 写进 $env:COVER_STUDIO_FONTS_OUT 指定的
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* 临时文件。用 String.raw 保住反斜杠；结果强制包成数组（PS5.1 单元素时 ConvertTo-Json 会退化成对象）。
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*/
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const REG_QUERY_SCRIPT = String.raw`
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$ErrorActionPreference = 'Stop'
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$outPath = $env:COVER_STUDIO_FONTS_OUT
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if (-not $outPath) { throw 'COVER_STUDIO_FONTS_OUT is not set' }
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$result = @()
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foreach ($hive in @('HKLM:\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Fonts', 'HKCU:\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Fonts')) {
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if (-not (Test-Path $hive)) { continue }
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$kind = if ($hive -like 'HKLM*') { 'HKLM' } else { 'HKCU' }
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$props = Get-ItemProperty -Path $hive
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foreach ($p in $props.PSObject.Properties) {
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if ($p.Name -like 'PS*') { continue }
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$v = $p.Value
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if ($v -is [System.Array]) { $v = $v[0] }
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if ($null -eq $v) { continue }
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$result += [PSCustomObject]@{ kind = $kind; name = $p.Name; value = [string]$v }
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}
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}
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$json = ConvertTo-Json -InputObject @($result) -Compress -Depth 3
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[System.IO.File]::WriteAllText($outPath, $json, (New-Object System.Text.UTF8Encoding($false)))
|
||||
`;
|
||||
|
||||
interface RawFontEntry {
|
||||
kind?: "HKLM" | "HKCU";
|
||||
name?: string;
|
||||
value?: string;
|
||||
}
|
||||
|
||||
interface FontRecord {
|
||||
entry: FontEntry;
|
||||
path: string;
|
||||
ext: string;
|
||||
}
|
||||
|
||||
/** Windows 绝对路径 / UNC 路径判定。 */
|
||||
function isAbsoluteWindowsPath(p: string): boolean {
|
||||
return /^[a-zA-Z]:[\\/]/.test(p) || p.startsWith("\\\\");
|
||||
}
|
||||
|
||||
/** 注册表值名形如 "阿里巴巴普惠体-H (TrueType)"，把末尾类型标注剥掉，剩下字族名。 */
|
||||
function familyOf(valueName: string): string {
|
||||
return valueName.replace(/\s*\([^)]*\)\s*$/, "").trim();
|
||||
}
|
||||
|
||||
/** 值里是裸文件名时，按来源拼回目录；绝对路径直接原样返回。 */
|
||||
function resolvePath(value: string, kind: "HKLM" | "HKCU"): string {
|
||||
const v = value.trim();
|
||||
if (isAbsoluteWindowsPath(v)) return v;
|
||||
if (kind === "HKCU") {
|
||||
const base = process.env.LOCALAPPDATA
|
||||
? join(process.env.LOCALAPPDATA, "Microsoft", "Windows", "Fonts")
|
||||
: "C:\\Windows\\Fonts";
|
||||
return join(base, v);
|
||||
}
|
||||
return join("C:\\Windows\\Fonts", v);
|
||||
}
|
||||
|
||||
/** 幂等 id：路径的 sha1，base64url。稳定，前端据此取文件。 */
|
||||
function makeId(path: string): string {
|
||||
return createHash("sha1").update(path).digest("base64url");
|
||||
}
|
||||
|
||||
async function enumerateFonts(): Promise<FontRecord[]> {
|
||||
const tmpPath = join(tmpdir(), `cover-studio-fonts-${process.pid}-${Date.now()}.json`);
|
||||
try {
|
||||
await execFileAsync(
|
||||
"powershell.exe",
|
||||
[
|
||||
"-NoProfile",
|
||||
"-NonInteractive",
|
||||
"-ExecutionPolicy",
|
||||
"Bypass",
|
||||
"-Command",
|
||||
REG_QUERY_SCRIPT,
|
||||
],
|
||||
{
|
||||
env: { ...process.env, COVER_STUDIO_FONTS_OUT: tmpPath },
|
||||
timeout: 20000,
|
||||
windowsHide: true,
|
||||
maxBuffer: 16 * 1024 * 1024,
|
||||
},
|
||||
);
|
||||
|
||||
const raw = JSON.parse(await readFile(tmpPath, "utf8")) as unknown;
|
||||
const list: RawFontEntry[] = Array.isArray(raw) ? raw : [raw];
|
||||
const seen = new Set<string>();
|
||||
const records: FontRecord[] = [];
|
||||
|
||||
for (const item of list) {
|
||||
const name = (item.name ?? "").trim();
|
||||
// @ 前缀是同一文件的竖排变体，跳过避免下拉里重复。
|
||||
if (!name || name.startsWith("@")) continue;
|
||||
const value = (item.value ?? "").trim();
|
||||
if (!value) continue;
|
||||
|
||||
const path = resolvePath(value, item.kind ?? "HKLM");
|
||||
const ext = extname(path).slice(1).toLowerCase();
|
||||
if (!FONT_EXTS.has(ext)) continue;
|
||||
|
||||
const key = path.toLowerCase();
|
||||
if (seen.has(key)) continue;
|
||||
seen.add(key);
|
||||
if (!existsSync(path)) continue;
|
||||
|
||||
records.push({
|
||||
path,
|
||||
ext,
|
||||
entry: {
|
||||
id: makeId(path),
|
||||
family: familyOf(name),
|
||||
path,
|
||||
ext,
|
||||
needsExtraction: ext === "ttc",
|
||||
},
|
||||
});
|
||||
}
|
||||
|
||||
return records;
|
||||
} finally {
|
||||
// 临时文件用一次就删，失败也忽略，不在仓库里散落。
|
||||
await unlink(tmpPath).catch(() => {});
|
||||
}
|
||||
}
|
||||
|
||||
export function fontsPlugin(): Plugin {
|
||||
let cache: Promise<FontRecord[]> | null = null;
|
||||
const byId = new Map<string, FontRecord>();
|
||||
|
||||
async function getRecords(): Promise<FontRecord[]> {
|
||||
if (!cache) {
|
||||
cache = enumerateFonts().then((records) => {
|
||||
byId.clear();
|
||||
for (const r of records) byId.set(r.entry.id, r);
|
||||
return records;
|
||||
});
|
||||
}
|
||||
return cache;
|
||||
}
|
||||
|
||||
return {
|
||||
name: "cover-studio:fonts",
|
||||
apply: "serve",
|
||||
configureServer() {
|
||||
// T2 在这里挂 server.middlewares.use(...)
|
||||
configureServer(server) {
|
||||
server.middlewares.use(async (req, res, next) => {
|
||||
const url = (req.url ?? "").split("?")[0];
|
||||
if (!url.startsWith("/__fonts")) {
|
||||
next();
|
||||
return;
|
||||
}
|
||||
|
||||
if (url === "/__fonts") {
|
||||
try {
|
||||
const records = await getRecords();
|
||||
const body: FontListResponse = {
|
||||
fonts: records.map((r) => r.entry),
|
||||
};
|
||||
res.setHeader("Content-Type", "application/json; charset=utf-8");
|
||||
res.end(JSON.stringify(body));
|
||||
} catch (err) {
|
||||
res.statusCode = 500;
|
||||
res.setHeader("Content-Type", "application/json; charset=utf-8");
|
||||
res.end(JSON.stringify({ error: err instanceof Error ? err.message : String(err) }));
|
||||
}
|
||||
return;
|
||||
}
|
||||
|
||||
const id = url.slice("/__fonts/".length);
|
||||
if (!id) {
|
||||
res.statusCode = 404;
|
||||
res.end("font id missing");
|
||||
return;
|
||||
}
|
||||
|
||||
try {
|
||||
await getRecords();
|
||||
const rec = byId.get(id);
|
||||
if (!rec) {
|
||||
res.statusCode = 404;
|
||||
res.end("font not found");
|
||||
return;
|
||||
}
|
||||
const data = await readFile(rec.path);
|
||||
res.setHeader("Content-Type", CONTENT_TYPES[rec.ext] ?? "application/octet-stream");
|
||||
res.setHeader("Content-Length", data.length);
|
||||
res.end(data);
|
||||
} catch (err) {
|
||||
res.statusCode = 500;
|
||||
res.end(err instanceof Error ? err.message : String(err));
|
||||
}
|
||||
});
|
||||
},
|
||||
};
|
||||
}
|
||||
|
||||
Reference in New Issue
Block a user