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Initial commit: FoFreeXit Phase 1 (Viewer) + Phase 2 (Annotate)

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PDF viewer (render/search/text-select/thumbnails/outline) and annotation
engine (Highlight/Underline/Strikeout/Square/FreeText/Note) over PDFium +
lopdf, with Unicode font embedding for Vietnamese text and undo/redo.
This commit is contained in:
admin
2026-06-17 22:34:06 +07:00
commit 274012f854
52 changed files with 28479 additions and 0 deletions
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app/src/index.html
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<!DOCTYPE html>
<html lang="vi">
<head>
<meta charset="UTF-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<title>FoFreeXit</title>
<link rel="stylesheet" href="styles.css" />
</head>
<body>
<header class="toolbar">
<strong class="brand">FoFreeXit</strong>
<span class="phase">Phase 1 · Viewer</span>
<button id="openBtn" title="Mở file PDF">📂 Mở</button>
<span class="sep"></span>
<button id="pagePrev" title="Trang trước (Page Up)">▲</button>
<input id="pageInput" class="pagenum" type="text" inputmode="numeric" title="Đến trang…" />
<span class="pageof">/ <span id="pageTotal">—</span></span>
<button id="pageNext" title="Trang sau (Page Down)">▼</button>
<span class="sep"></span>
<button id="zoomOut" title="Thu nhỏ (Ctrl+-)">−</button>
<select id="zoomSelect" class="zoom" title="Mức zoom"></select>
<button id="zoomIn" title="Phóng to (Ctrl++)">+</button>
<button id="zoomFit" title="Vừa bề rộng">Vừa rộng</button>
<button id="zoomFitPage" title="Vừa trang">Vừa trang</button>
<span class="sep"></span>
<input id="searchBox" type="search" placeholder="Tìm trong tài liệu… (Ctrl+F)" autofocus />
<label class="searchopt" title="Phân biệt hoa/thường"><input id="searchCase" type="checkbox" />Aa</label>
<button id="searchPrev" title="Kết quả trước (Shift+Enter)">◀</button>
<span id="searchCount" class="searchcount">—</span>
<button id="searchNext" title="Kết quả sau (Enter)">▶</button>
<span class="sep"></span>
<button id="copyPage" title="Copy text trang hiện tại">⧉ Copy</button>
<div class="spacer"></div>
<span id="status" class="status"></span>
</header>
<div class="annobar">
<span class="annolabel">Chú thích:</span>
<button class="atool" data-tool="highlight" title="Tô sáng (kéo vùng)">🖍️ Tô sáng</button>
<button class="atool" data-tool="underline" title="Gạch chân">U̲ Gạch chân</button>
<button class="atool" data-tool="strikeout" title="Gạch ngang">S̶ Gạch ngang</button>
<button class="atool" data-tool="square" title="Khung chữ nhật">▭ Khung</button>
<button class="atool" data-tool="freetext" title="Hộp văn bản">🅣 Text box</button>
<button class="atool" data-tool="note" title="Ghi chú dán">📌 Ghi chú</button>
<span class="sep"></span>
<button id="annotColorBtn" class="atool" title="Màu chú thích"><span class="sw" id="annotSw"></span> Màu</button>
<span class="sep"></span>
<button id="undoBtn" title="Hoàn tác (Ctrl+Z)" disabled>↶ Hoàn tác</button>
<button id="redoBtn" title="Làm lại (Ctrl+Y)" disabled>↷ Làm lại</button>
<span class="spacer"></span>
<span id="annotHint" class="status"></span>
<button id="saveAnnots" disabled>💾 Lưu chú thích (<span id="annotCount">0</span>)</button>
</div>
<div class="body">
<aside class="sidebar">
<div class="tabs">
<button id="tabThumbs" class="tab active">Thumbnails</button>
<button id="tabOutline" class="tab">Outline</button>
<button id="tabComments" class="tab">Chú thích</button>
</div>
<div id="thumbs" class="panel thumbs"></div>
<div id="outline" class="panel outline hidden"></div>
<div id="comments" class="panel comments hidden"></div>
</aside>
<main id="viewport" class="viewport">
<div id="pages" class="pages"></div>
</main>
</div>
<script src="main.js"></script>
</body>
</html>
app/src/main.js
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app/src/styles.css
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:root { color-scheme: dark; --accent: #4d8bff; }
* { box-sizing: border-box; }
html, body { height: 100%; margin: 0; }
body {
font-family: "Segoe UI", system-ui, sans-serif;
background: #525659;
color: #eee;
display: flex;
flex-direction: column;
}
/* Toolbar */
.toolbar {
display: flex;
align-items: center;
gap: 8px;
padding: 6px 12px;
background: #323639;
border-bottom: 1px solid #1c1f21;
flex: 0 0 auto;
}
.brand { color: var(--accent); font-size: 16px; }
.phase { color: #9aa0a6; font-size: 12px; }
.sep { width: 1px; height: 22px; background: #4a4f52; margin: 0 4px; }
.spacer { flex: 1; }
.status, .pageind, .searchcount, .zoom { color: #9aa0a6; font-size: 12px; }
.zoom { min-width: 44px; text-align: center; }
.searchcount { min-width: 60px; text-align: center; }
.pageof { color: #9aa0a6; font-size: 12px; }
.pagenum {
width: 42px; text-align: center; background: #1f2224; color: #eee;
border: 1px solid #4a4f52; border-radius: 6px; padding: 4px 4px; font-size: 13px;
}
.searchopt {
display: flex; align-items: center; gap: 3px; color: #9aa0a6; font-size: 12px;
cursor: pointer; user-select: none;
}
button {
background: #4a4f52;
color: #fff;
border: none;
border-radius: 6px;
padding: 4px 9px;
cursor: pointer;
font-size: 13px;
}
button:hover { background: #595f63; }
button:disabled { opacity: .4; cursor: default; }
#copyPage { background: var(--accent); }
select.zoom {
background: #1f2224; color: #eee; border: 1px solid #4a4f52;
border-radius: 6px; padding: 4px 4px; font-size: 13px; min-width: 64px;
}
input[type="search"] {
background: #1f2224;
color: #eee;
border: 1px solid #4a4f52;
border-radius: 6px;
padding: 4px 8px;
width: 220px;
}
/* Annotation toolbar */
.annobar {
display: flex;
align-items: center;
gap: 8px;
padding: 5px 12px;
background: #2b2f31;
border-bottom: 1px solid #1c1f21;
flex: 0 0 auto;
}
.annolabel { color: #9aa0a6; font-size: 12px; display: flex; align-items: center; gap: 4px; }
.atool { background: #3a3f42; }
.atool.active { background: var(--accent); box-shadow: 0 0 0 2px rgba(77,139,255,.4); }
#saveAnnots { background: #2e7d32; }
#saveAnnots:disabled { background: #555; }
#annotColor { width: 28px; height: 22px; padding: 0; border: none; background: none; cursor: pointer; }
/* Body layout */
.body { flex: 1; display: flex; min-height: 0; }
/* Khi đang chọn công cụ chú thích: tắt chọn text, đổi con trỏ */
body.tool-active .textlayer { pointer-events: none; }
body.tool-active .page-slot { cursor: crosshair; }
/* Highlight/Underline/Strikeout: NGƯỢC LẠI — bám theo text đã CHỌN (như Foxit),
nên phải giữ textlayer bắt được chuột để chọn text bình thường. */
body.tool-mark .textlayer { pointer-events: auto; }
body.tool-mark .page-slot { cursor: text; }
/* Lớp annotation (preview trước khi lưu) */
.annotlayer { position: absolute; inset: 0; pointer-events: none; }
.annotlayer .a-hl { position: absolute; background: rgba(255,230,0,.4); }
.annotlayer .a-box { position: absolute; border: 1.5px solid; }
.annotlayer .a-line { position: absolute; height: 0; border-top: 2px solid; }
.annotlayer .a-text {
position: absolute; border: 1px dashed; padding: 2px 4px;
font-size: 12px; color: #111; background: rgba(255,255,255,.6); overflow: hidden;
}
.annotlayer .a-note {
position: absolute; width: 18px; height: 18px; pointer-events: auto;
background: #ffd400; border: 1px solid #b59000; border-radius: 3px;
font-size: 12px; text-align: center; line-height: 18px; cursor: help;
}
/* Annotation: chọn & xoá */
.a-sel { pointer-events: auto; cursor: pointer; }
body.tool-active .annotlayer * { pointer-events: none; }
.annotlayer .selected { outline: 2px solid #4d8bff; outline-offset: 1px; }
.annotlayer .a-del {
position: absolute; right: -10px; top: -10px; width: 18px; height: 18px;
background: #e53935; color: #fff; border-radius: 50%; font-size: 11px;
line-height: 18px; text-align: center; cursor: pointer; pointer-events: auto;
box-shadow: 0 1px 4px rgba(0,0,0,.4);
}
.annotlayer .a-line { min-height: 4px; }
/* Text box editor tại chỗ */
.a-editor {
position: absolute; pointer-events: auto; background: rgba(255,255,255,.9);
border: 1px solid #4d8bff; outline: none; padding: 2px 4px; line-height: 1.25;
white-space: pre-wrap; word-break: break-word; box-shadow: 0 2px 10px rgba(0,0,0,.3);
}
/* Thanh định dạng nổi */
.fmtbar {
position: fixed; z-index: 50; display: flex; gap: 3px; align-items: center;
background: #2b2f31; border: 1px solid #1c1f21; border-radius: 7px;
padding: 4px 6px; box-shadow: 0 4px 16px rgba(0,0,0,.5);
}
.fmtbar select { background: #1f2224; color: #eee; border: 1px solid #4a4f52; border-radius: 4px; padding: 2px; }
.fmtbtn {
width: 26px; height: 24px; background: #3a3f42; color: #fff; border: none;
border-radius: 4px; cursor: pointer; font-weight: bold; padding: 0;
display: inline-flex; align-items: center; justify-content: center; gap: 2px;
}
.fmtbtn.on { background: var(--accent); }
.fmtbtn .sw, .citem .csw, #annotSw, .np-color .sw, .fmt-color .sw {
display: inline-block; width: 12px; height: 12px; border-radius: 2px;
border: 1px solid rgba(255,255,255,.5); vertical-align: middle;
}
#annotSw { width: 14px; height: 14px; }
/* Note popup */
.notepop {
position: fixed; z-index: 50; width: 230px; background: #fffbea; color: #222;
border: 1px solid #c9b400; border-radius: 6px; box-shadow: 0 6px 20px rgba(0,0,0,.4);
}
.np-head { display: flex; justify-content: space-between; align-items: center;
background: #ffe600; padding: 4px 8px; font-size: 12px; font-weight: bold; border-radius: 6px 6px 0 0; }
.np-close { cursor: pointer; }
.np-text { width: 100%; min-height: 90px; border: none; outline: none; resize: vertical;
padding: 8px; background: transparent; color: #222; font-family: inherit; font-size: 13px; box-sizing: border-box; }
.np-foot { display: flex; justify-content: space-between; padding: 6px 8px; border-top: 1px solid #e0d480; }
.np-foot button { background: #eee; color: #333; font-size: 12px; }
.np-del { color: #c62828 !important; }
/* Color popover */
.colorpop {
position: fixed; z-index: 60; background: #2b2f31; border: 1px solid #1c1f21;
border-radius: 7px; padding: 8px; box-shadow: 0 6px 20px rgba(0,0,0,.5);
}
.cgrid { display: grid; grid-template-columns: repeat(6, 20px); gap: 5px; }
.cs { width: 20px; height: 20px; border-radius: 4px; cursor: pointer; border: 2px solid transparent; }
.cs:hover { border-color: #fff; }
.cs.cur { border-color: #4d8bff; }
.clbl { color: #9aa0a6; font-size: 11px; margin: 8px 0 4px; }
.ccustom { display: block; margin-top: 8px; color: #ccc; font-size: 12px; cursor: pointer; }
.ccustom input { vertical-align: middle; margin-left: 4px; }
/* Comments panel */
.comments .citem {
padding: 6px; border-radius: 5px; cursor: pointer; font-size: 12px;
border: 1px solid #3a3f42; margin-bottom: 6px;
}
.comments .citem:hover { background: #3a3f42; }
.comments .citem .ckind { color: var(--accent); font-weight: bold; }
.comments .citem .cdel { float: right; color: #e57373; cursor: pointer; }
.comments .empty { color: #777; font-size: 12px; }
/* Sidebar */
.sidebar {
width: 220px;
flex: 0 0 220px;
background: #2b2f31;
border-right: 1px solid #1c1f21;
display: flex;
flex-direction: column;
min-height: 0;
}
.tabs { display: flex; flex: 0 0 auto; }
.tab {
flex: 1;
border-radius: 0;
background: #2b2f31;
color: #9aa0a6;
padding: 8px;
}
.tab.active { color: #fff; box-shadow: inset 0 -2px 0 var(--accent); }
.panel { flex: 1; overflow: auto; padding: 8px; }
.panel.hidden { display: none; }
/* Thumbnails */
.thumbs { display: flex; flex-direction: column; gap: 10px; align-items: center; }
.thumb { cursor: pointer; text-align: center; width: 100%; }
.thumb img {
width: 130px;
background: #fff;
border: 2px solid transparent;
box-shadow: 0 1px 6px rgba(0,0,0,.5);
}
.thumb.active img { border-color: var(--accent); }
.thumb .n { font-size: 11px; color: #9aa0a6; margin-top: 2px; }
/* Outline */
.outline .oitem {
padding: 5px 6px;
border-radius: 5px;
cursor: pointer;
font-size: 13px;
color: #d6d9dc;
white-space: nowrap;
overflow: hidden;
text-overflow: ellipsis;
}
.outline .oitem:hover { background: #3a3f42; }
/* Viewer */
.viewport { flex: 1; overflow: auto; min-height: 0; }
.pages {
display: flex;
flex-direction: column;
align-items: center;
gap: 16px;
padding: 20px;
}
.page-slot {
position: relative;
background: #fff;
box-shadow: 0 4px 18px rgba(0,0,0,.5);
flex: 0 0 auto;
}
.page-slot img { display: block; width: 100%; height: 100%; }
.page-slot .ph {
position: absolute; inset: 0;
display: flex; align-items: center; justify-content: center;
color: #888; font-size: 13px;
}
.overlay { position: absolute; inset: 0; pointer-events: none; }
/* Text layer: span trong suốt phủ lên ảnh để chọn & copy text */
.textlayer { position: absolute; inset: 0; overflow: hidden; }
.textlayer span {
position: absolute;
color: transparent;
white-space: pre;
overflow: hidden;
cursor: text;
transform-origin: 0 0;
}
.textlayer span::selection { background: rgba(77, 139, 255, .45); }
.page-slot img { user-select: none; -webkit-user-drag: none; }
.hl {
position: absolute;
background: rgba(255, 214, 0, .38);
outline: 1px solid rgba(255, 184, 0, .9);
}
.hl.current { background: rgba(255, 138, 0, .55); }