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update html

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This commit is contained in:
Shuanglei Tao
2025-11-09 09:23:41 +08:00
parent 826b669d8b
commit fcd0079181
6 changed files with 992 additions and 962 deletions
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438
html/css/main.css
View File

@@ -20,79 +20,125 @@ body {
font-family: system-ui, -apple-system, sans-serif;
}
.debug {
display: none !important;
button {
padding: 0.375rem 0.75rem;
border: 1px solid var(--primary-color);
border-radius: 0.375rem;
margin-bottom: 5px;
white-space: nowrap;
cursor: pointer;
font-size: 0.9rem;
}
body.debug-mode .debug {
display: flex !important;
button:disabled {
opacity: 0.65;
}
body.debug-mode {
background-color: var(--dark-bg);
color: var(--dark-text);
button.primary {
color: #fff;
background-color: var(--primary-color);
}
body.debug-mode .main {
background-color: var(--dark-bg);
color: var(--dark-text);
button.primary:hover {
color: #fff;
border-color: var(--primary-hover);
background-color: var(--primary-hover);
}
body.debug-mode fieldset {
background-color: var(--dark-fieldset-bg);
box-shadow: 0 .5rem 0.5rem rgba(0, 0, 0, 0.5);
button.secondary {
color: #fff;
background-color: var(--secondary-color);
border-color: var(--secondary-color);
}
body.debug-mode h3 {
border-bottom: 1px solid var(--dark-border);
color: var(--dark-text);
button.secondary:hover {
color: #fff;
border-color: var(--secondary-hover);
background-color: var(--secondary-hover);
}
body.debug-mode code {
background: var(--dark-code-bg);
color: #ff9800;
h3 {
padding-bottom: .3em;
border-bottom: 1px solid #ccc;
text-align: center;
}
body.debug-mode #log {
background: var(--dark-log-bg);
border: 1px solid var(--dark-border);
fieldset {
border: none;
box-shadow: 0 .5rem 0.5rem rgba(0, 0, 0, 0.2);
background-color: #f8f9fa;
padding: 10px;
margin-bottom: 16px;
border-radius: 4px;
}
body.debug-mode #log .time {
color: #8bc34a;
fieldset legend {
font-weight: bold;
color: rgba(0, 0, 255, 0.6);
}
body.debug-mode #log .action {
color: #03a9f4;
code {
padding: .2em .4em;
margin: 0;
font-size: 85%;
background: #ccc;
border-radius: 3px;
}
body.debug-mode input[type=text],
body.debug-mode input[type=number],
body.debug-mode select {
background-color: var(--dark-input-bg);
color: var(--dark-input-text);
border-color: var(--dark-border);
input[type=text],
input[type=number],
select {
font-size: 1rem;
font-weight: 400;
line-height: 1.5;
color: #212529;
border: 1px solid #dee2e6;
border-radius: 0.375rem;
padding: .2rem .75rem;
max-width: 100%;
box-sizing: border-box;
}
body.debug-mode input[type=file] {
color: var(--dark-input-text);
background-color: transparent;
border-color: var(--dark-border);
input[type=file] {
font-size: 1rem;
font-weight: 400;
line-height: 1.5;
color: #212529;
max-width: 100%;
}
body.debug-mode input[type=file]::file-selector-button {
background-color: var(--dark-fieldset-bg);
color: var(--dark-input-text);
border-color: var(--dark-border);
input::file-selector-button {
font-size: 0.9rem;
font-weight: 400;
line-height: 1.5;
border: 1px solid var(--primary-color);
border-radius: 0.375rem;
cursor: pointer;
}
body.debug-mode input[type=file]::file-selector-button:hover {
background-color: #333;
border-color: #444;
select {
padding: .3rem 2.25rem .3rem .75rem;
}
body.debug-mode fieldset legend {
color: #64b5f6;
input:focus,
select:focus {
border: 1px solid #86b7fe;
box-shadow: 0 0 4px rgba(0, 120, 215, 0.8);
outline: 0;
}
input[type=text]:disabled,
input[type=number]:disabled,
select:disabled {
opacity: 0.65;
cursor: not-allowed;
background-color: #e9ecef;
color: #6c757d;
}
label {
margin-right: 4px;
white-space: nowrap;
}
.main {
@@ -144,50 +190,6 @@ body.debug-mode fieldset legend {
text-decoration: underline;
}
body.debug-mode .footer .links a:not(:last-child)::after {
color: #666;
}
body.debug-mode .footer {
color: #999;
}
body.debug-mode .footer a {
color: #999;
}
body.debug-mode .footer a:hover {
color: #64b5f6;
}
h3 {
padding-bottom: .3em;
border-bottom: 1px solid #CCC;
text-align: center;
}
fieldset {
border: none;
box-shadow: 0 .5rem 0.5rem rgba(0, 0, 0, 0.2);
background-color: #f8f9fa;
padding: 10px;
margin-bottom: 16px;
border-radius: 4px;
}
fieldset legend {
font-weight: bold;
color: rgba(0, 0, 255, 0.6);
}
code {
padding: .2em .4em;
margin: 0;
font-size: 85%;
background: #CCC;
border-radius: 3px;
}
.flex-container {
display: flex;
flex-wrap: wrap;
@@ -206,17 +208,17 @@ code {
margin-left: auto;
}
#status {
margin: 10px 0;
.debug {
display: none !important;
}
#log {
.log-container {
width: 100%;
min-height: 100px;
max-height: 300px;
margin: 0;
padding: 5px;
background: #DDD;
background: #ddd;
overflow-y: auto;
overflow-x: hidden;
font-family: ui-monospace, SFMono-Regular, SF Mono, Menlo, Consolas, Liberation Mono, monospace;
@@ -224,32 +226,27 @@ code {
word-break: break-word;
}
#log div {
.log-container .log-line {
padding: 2px 0;
}
#log .time,
#log .action {
.log-container .time,
.log-container .action {
display: inline-block;
white-space: nowrap;
}
#log .time {
.log-container .time {
color: #333;
margin-right: 0.5em;
}
#log .action {
.log-container .action {
color: #666;
margin-right: 0.5em;
}
#canvas-box {
margin-top: 10px;
width: 100%;
}
#canvas {
.canvas-container canvas {
border: black solid 1px;
max-width: 100%;
height: auto;
@@ -257,95 +254,11 @@ code {
margin: 0 auto;
}
.canvas-container.crop-mode #canvas {
.canvas-container.crop-mode canvas {
border: 2px dashed var(--primary-color);
cursor: grab;
}
button {
padding: 0.375rem 0.75rem;
border: 1px solid var(--primary-color);
border-radius: 0.375rem;
margin-bottom: 5px;
white-space: nowrap;
cursor: pointer;
font-size: 0.9rem;
}
button:disabled {
opacity: 0.65;
}
button.primary {
color: #fff;
background-color: var(--primary-color);
}
button.primary:hover {
color: #fff;
border-color: var(--primary-hover);
background-color: var(--primary-hover);
}
button.secondary {
color: #fff;
background-color: var(--secondary-color);
border-color: var(--secondary-color);
}
button.secondary:hover {
color: #fff;
border-color: var(--secondary-hover);
background-color: var(--secondary-hover);
}
input[type=text],
input[type=number],
select {
font-size: 1rem;
font-weight: 400;
line-height: 1.5;
color: #212529;
border: 1px solid #dee2e6;
border-radius: 0.375rem;
padding: .2rem .75rem;
max-width: 100%;
box-sizing: border-box;
}
input[type=file] {
font-size: 1rem;
font-weight: 400;
line-height: 1.5;
color: #212529;
max-width: 100%;
}
input::file-selector-button {
font-size: 0.9rem;
font-weight: 400;
line-height: 1.5;
border: 1px solid var(--primary-color);
border-radius: 0.375rem;
cursor: pointer;
}
select {
padding: .3rem 2.25rem .3rem .75rem;
}
input:focus,
select:focus {
border: 1px solid #86b7fe;
box-shadow: 0 0 4px rgba(0, 120, 215, 0.8);
outline: 0;
}
label {
margin-right: 4px;
white-space: nowrap;
}
.status-bar {
display: none;
font-size: 85%;
@@ -357,7 +270,7 @@ label {
canvas.text-placement-mode {
border: 2px dashed var(--primary-color) !important;
cursor: text !important; /* Force text cursor */
cursor: text !important;
}
.canvas-title {
@@ -423,44 +336,11 @@ canvas.text-placement-mode {
display: none;
}
body.debug-mode .tool-button {
background-color: var(--dark-input-bg);
border-color: var(--dark-border);
color: var(--dark-text);
}
body.debug-mode .tool-button:hover {
background-color: #3a3a3a;
border-color: #444;
}
body.debug-mode .tool-button.active {
background-color: var(--primary-color);
color: white;
border-color: var(--primary-hover);
}
input[type=text]:disabled,
input[type=number]:disabled,
select:disabled {
opacity: 0.65;
cursor: not-allowed;
background-color: #e9ecef;
color: #6c757d;
}
body.debug-mode input[type=text]:disabled,
body.debug-mode input[type=number]:disabled,
body.debug-mode select:disabled {
background-color: #1a1a1a;
color: #666;
border-color: #2a2a2a;
}
@media (max-width: 768px) {
.flex-container {
flex-direction: column;
}
.flex-container.options .flex-group label {
min-width: 80px;
}
@@ -480,7 +360,7 @@ body.debug-mode select:disabled {
width: 100%;
}
#log {
.log-container {
height: 150px;
margin-top: 10px;
}
@@ -499,4 +379,112 @@ body.debug-mode select:disabled {
max-width: 100%;
margin-bottom: 5px;
}
}
body.dark-mode .debug {
display: flex !important;
}
body.dark-mode,
body.dark-mode .main {
background-color: var(--dark-bg);
color: var(--dark-text);
}
body.dark-mode fieldset {
background-color: var(--dark-fieldset-bg);
box-shadow: 0 .5rem 0.5rem rgba(0, 0, 0, 0.5);
}
body.dark-mode h3 {
border-bottom: 1px solid var(--dark-border);
color: var(--dark-text);
}
body.dark-mode code {
background: var(--dark-code-bg);
color: #ff9800;
}
body.dark-mode input[type=text],
body.dark-mode input[type=number],
body.dark-mode select {
background-color: var(--dark-input-bg);
color: var(--dark-input-text);
border-color: var(--dark-border);
}
body.dark-mode input[type=text]:disabled,
body.dark-mode input[type=number]:disabled,
body.dark-mode select:disabled {
background-color: #1a1a1a;
color: #666;
border-color: #2a2a2a;
}
body.dark-mode input[type=file] {
color: var(--dark-input-text);
background-color: transparent;
border-color: var(--dark-border);
}
body.dark-mode input[type=file]::file-selector-button {
background-color: var(--dark-fieldset-bg);
color: var(--dark-input-text);
border-color: var(--dark-border);
}
body.dark-mode input[type=file]::file-selector-button:hover {
background-color: #333;
border-color: #444;
}
body.dark-mode .log-container {
background: var(--dark-log-bg);
border: 1px solid var(--dark-border);
}
body.dark-mode .log-container .time {
color: #8bc34a;
}
body.dark-mode .log-container .action {
color: #03a9f4;
}
body.dark-mode fieldset legend {
color: #64b5f6;
}
body.dark-mode .footer .links a:not(:last-child)::after {
color: #666;
}
body.dark-mode .footer {
color: #999;
}
body.dark-mode .footer a {
color: #999;
}
body.dark-mode .footer a:hover {
color: #64b5f6;
}
body.dark-mode .tool-button {
background-color: var(--dark-input-bg);
border-color: var(--dark-border);
color: var(--dark-text);
}
body.dark-mode .tool-button:hover {
background-color: #3a3a3a;
border-color: #444;
}
body.dark-mode .tool-button.active {
background-color: var(--primary-color);
color: white;
border-color: var(--primary-hover);
}

137
html/index.html
View File

@@ -1,24 +1,25 @@
<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>墨水屏日历</title>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>墨水屏日历</title>
<link rel="shortcut icon" type="image/png" href="favicon.png">
<link rel="stylesheet" href="css/main.css?v=20250731">
</head>
<body>
<div class="main">
<h3>墨水屏日历</h3>
<fieldset>
<legend>蓝牙连接</legend>
<div class="flex-container">
<div class="flex-group">
<button id="connectbutton" type="button" class="primary" onclick="preConnect()">连接</button>
<button id="reconnectbutton" type="button" class="secondary" onclick="reConnect()">重连</button>
<div class="main">
<h3>墨水屏日历</h3>
<fieldset>
<legend>蓝牙连接</legend>
<div class="flex-container">
<div class="flex-group">
<button id="connectbutton" type="button" class="primary" onclick="preConnect()">连接</button>
<button id="reconnectbutton" type="button" class="secondary" onclick="reConnect()">重连</button>
<button type="button" class="secondary" onclick="clearLog()">清空日志</button>
</div>
</div>
<div class="flex-group right debug">
<label for="epddriver">驱动</label>
<select id="epddriver">
@@ -41,25 +42,25 @@
<input id="epdpins" type="text" value="">
<button id="setDriverbutton" type="button" class="primary" onclick="setDriver()">确定</button>
</div>
</div>
<div id="log"></div>
</fieldset>
</div>
<div class="log-container" id="log"></div>
</fieldset>
<fieldset>
<legend>设备控制</legend>
<div class="flex-container">
<legend>设备控制</legend>
<div class="flex-container">
<div class="flex-group">
<button id="calendarmodebutton" type="button" class="primary" onclick="syncTime(1)">日历模式</button>
<button id="clockmodebutton" type="button" class="primary" onclick="syncTime(2)">时钟模式</button>
<button id="calendarmodebutton" type="button" class="primary" onclick="syncTime(1)">日历模式</button>
<button id="clockmodebutton" type="button" class="primary" onclick="syncTime(2)">时钟模式</button>
<button id="clearscreenbutton" type="button" class="secondary" onclick="clearScreen()">清除屏幕</button>
</div>
<div class="flex-group right debug">
<input type="text" id="cmdTXT" value="">
<button id="sendcmdbutton" type="button" class="primary" onclick="sendcmd()">发送命令</button>
</div>
</div>
<div class="flex-group right debug">
<input type="text" id="cmdTXT" value="">
<button id="sendcmdbutton" type="button" class="primary" onclick="sendcmd()">发送命令</button>
</div>
</div>
</fieldset>
<fieldset>
<legend>蓝牙传图</legend>
<legend>蓝牙传图</legend>
<div class="flex-container">
<input type="file" id="imageFile" accept=".png,.jpg,.bmp,.webp,.jpeg">
</div>
@@ -154,13 +155,13 @@
<div class="flex-group brush-tools">
<label for="brush-color">颜色:</label>
<select id="brush-color">
<option value="#000000">黑色</option>
<option value="#FF0000">红色</option>
<option value="#FFFF00">黄色</option>
<option value="#000000">黑色</option>
<option value="#FF0000">红色</option>
<option value="#FFFF00">黄色</option>
<option value="#00FF00">绿色</option>
<option value="#0000FF">蓝色</option>
<option value="#FFFFFF">白色</option>
</select>
<option value="#FFFFFF">白色</option>
</select>
<label for="brush-size">粗细:</label>
<input type="number" id="brush-size" value="2" min="1" max="100">
</div>
@@ -169,34 +170,34 @@
<div class="flex-group text-tools">
<label for="font-family">字体:</label>
<select id="font-family">
<option value="Arial">Arial</option>
<option value="sans-serif">Sans-serif</option>
<option value="monospace">Monospace</option>
<option value="SimSun">宋体</option>
<option value="SimHei">黑体</option>
<option value="Microsoft Yahei">微软雅黑</option>
<option value="Microsoft JhengHei">微软正黑体</option>
<option value="KaiTi">楷体</option>
<option value="NSimSun">新宋体</option>
<option value="FangSong">仿宋</option>
<option value="YouYuan">幼圆</option>
<option value="LiSu">隶书</option>
<option value="STHeiti">华文黑体</option>
<option value="STXihei">华文细黑</option>
<option value="STKaiti">华文楷体</option>
<option value="STSong">华文宋体</option>
<option value="STFangsong">华文仿宋</option>
<option value="STZhongsong">华文中宋</option>
<option value="STHupo">华文琥珀</option>
<option value="STXinwei">华文新魏</option>
<option value="STLiti">华文隶书</option>
<option value="STXingkai">华文行楷</option>
<option value="FZShuTi">方正舒体</option>
<option value="FZYaoti">方正姚体</option>
<option value="PingFang SC">苹方</option>
<option value="Source Han Sans CN">思源黑体</option>
<option value="Source Han Serif SC">思源宋体</option>
<option value="WenQuanYi Micro Hei">文泉驿微米黑</option>
<option value="Arial">Arial</option>
<option value="sans-serif">Sans-serif</option>
<option value="monospace">Monospace</option>
<option value="SimSun">宋体</option>
<option value="SimHei">黑体</option>
<option value="Microsoft Yahei">微软雅黑</option>
<option value="Microsoft JhengHei">微软正黑体</option>
<option value="KaiTi">楷体</option>
<option value="NSimSun">新宋体</option>
<option value="FangSong">仿宋</option>
<option value="YouYuan">幼圆</option>
<option value="LiSu">隶书</option>
<option value="STHeiti">华文黑体</option>
<option value="STXihei">华文细黑</option>
<option value="STKaiti">华文楷体</option>
<option value="STSong">华文宋体</option>
<option value="STFangsong">华文仿宋</option>
<option value="STZhongsong">华文中宋</option>
<option value="STHupo">华文琥珀</option>
<option value="STXinwei">华文新魏</option>
<option value="STLiti">华文隶书</option>
<option value="STXingkai">华文行楷</option>
<option value="FZShuTi">方正舒体</option>
<option value="FZYaoti">方正姚体</option>
<option value="PingFang SC">苹方</option>
<option value="Source Han Sans CN">思源黑体</option>
<option value="Source Han Serif SC">思源宋体</option>
<option value="WenQuanYi Micro Hei">文泉驿微米黑</option>
</optgroup>
</select>
<label for="font-size">大小:</label>
@@ -213,13 +214,13 @@
<button id="crop-zoom-out" title="缩小" class="secondary">-</button>
<button id="crop-move-left" title="左移">⇦</button>
<button id="crop-move-up" title="上移">⇧</button>
<button id="crop-move-down" title="下移">⇩</button>
<button id="crop-move-right" title="右移">⇨</button>
<button class="primary" onclick="finishCrop()">完成</button>
</div>
<button id="crop-move-down" title="下移">⇩</button>
<button id="crop-move-right" title="右移">⇨</button>
<button class="primary" onclick="cropManager.finishCrop()">完成</button>
</div>
</div>
</fieldset>
</div>
</fieldset>
<div class="footer">
<span class="copy">&copy; 2025 tsl0922.</span>
<span class="links">
@@ -228,11 +229,11 @@
<a href="?debug=true" id="debug-toggle">开发模式</a>
</span>
</div>
</div>
<script type="text/javascript" src="js/dithering.js?v=20250731"></script>
<script type="text/javascript" src="js/paint.js?v=20250731"></script>
<script type="text/javascript" src="js/crop.js?v=20250731"></script>
<script type="text/javascript" src="js/main.js?v=20250731"></script>
</div>
<script type="text/javascript" src="js/dithering.js?v=20250731"></script>
<script type="text/javascript" src="js/paint.js?v=20250731"></script>
<script type="text/javascript" src="js/crop.js?v=20250731"></script>
<script type="text/javascript" src="js/main.js?v=20250731"></script>
</body>
</html>

390
html/js/crop.js
View File

@@ -1,208 +1,224 @@
let backgroundZoom = 1;
let backgroundPanX = 0;
let backgroundPanY = 0;
let isPanning = false;
let lastPanX = 0;
let lastPanY = 0;
let lastTouchDistance = 0;
class CropManager {
constructor(canvas, ctx, paintManager) {
this.canvas = canvas;
this.ctx = ctx;
this.paintManager = paintManager;
this.backgroundZoom = 1;
this.backgroundPanX = 0;
this.backgroundPanY = 0;
this.isPanning = false;
this.lastPanX = 0;
this.lastPanY = 0;
this.lastTouchDistance = 0;
function resetCropStates() {
backgroundZoom = 1;
backgroundPanX = 0;
backgroundPanY = 0;
isPanning = false;
lastPanX = 0;
lastPanY = 0;
}
function isCropMode() {
return canvas.parentNode.classList.contains('crop-mode');
}
function exitCropMode() {
canvas.parentNode.classList.remove('crop-mode');
setCanvasTitle("");
canvas.removeEventListener('wheel', handleBackgroundZoom);
canvas.removeEventListener('mousedown', handleBackgroundPanStart);
canvas.removeEventListener('mousemove', handleBackgroundPan);
canvas.removeEventListener('mouseup', handleBackgroundPanEnd);
canvas.removeEventListener('mouseleave', handleBackgroundPanEnd);
canvas.removeEventListener('touchstart', handleTouchStart);
canvas.removeEventListener('touchmove', handleTouchMove);
canvas.removeEventListener('touchend', handleBackgroundPanEnd);
canvas.removeEventListener('touchcancel', handleBackgroundPanEnd);
}
function initializeCrop() {
const imageFile = document.getElementById('imageFile');
if (imageFile.files.length == 0) {
fillCanvas('white');
return;
// Bind event handlers
this.handleBackgroundZoom = this.handleBackgroundZoom.bind(this);
this.handleBackgroundPanStart = this.handleBackgroundPanStart.bind(this);
this.handleBackgroundPan = this.handleBackgroundPan.bind(this);
this.handleBackgroundPanEnd = this.handleBackgroundPanEnd.bind(this);
this.handleTouchStart = this.handleTouchStart.bind(this);
this.handleTouchMove = this.handleTouchMove.bind(this);
}
exitCropMode();
resetCropStates();
canvas.style.backgroundImage = `url(${URL.createObjectURL(imageFile.files[0])})`;
canvas.style.backgroundSize = '100%';
canvas.style.backgroundPosition = '';
canvas.style.backgroundRepeat = 'no-repeat';
// add event listeners for zoom and pan
canvas.addEventListener('wheel', handleBackgroundZoom);
canvas.addEventListener('mousedown', handleBackgroundPanStart);
canvas.addEventListener('mousemove', handleBackgroundPan);
canvas.addEventListener('mouseup', handleBackgroundPanEnd);
canvas.addEventListener('mouseleave', handleBackgroundPanEnd);
// Touch events for mobile devices
canvas.addEventListener('touchstart', handleTouchStart);
canvas.addEventListener('touchmove', handleTouchMove);
canvas.addEventListener('touchend', handleBackgroundPanEnd);
canvas.addEventListener('touchcancel', handleBackgroundPanEnd);
// Make the canvas transparent
ctx.clearRect(0, 0, canvas.width, canvas.height);
setCanvasTitle("裁剪模式: 可用鼠标滚轮或双指触摸缩放图片");
canvas.parentNode.classList.add('crop-mode');
}
function finishCrop() {
const imageFile = document.getElementById('imageFile');
if (imageFile.files.length == 0) return;
const image = new Image();
image.onload = function () {
URL.revokeObjectURL(this.src);
const fieldsetRect = canvas.getBoundingClientRect();
const scale = (image.width / fieldsetRect.width) / backgroundZoom;
const sx = -backgroundPanX * scale;
const sy = -backgroundPanY * scale;
const sWidth = fieldsetRect.width * scale;
const sHeight = fieldsetRect.height * scale;
fillCanvas('white');
ctx.drawImage(image, sx, sy, sWidth, sHeight, 0, 0, canvas.width, canvas.height);
redrawTextElements();
redrawLineSegments();
convertDithering();
exitCropMode();
saveToHistory(); // Save after finishing crop
};
image.src = URL.createObjectURL(imageFile.files[0]);
}
function handleTouchStart(e) {
e.preventDefault();
if (e.touches.length === 1) {
handleBackgroundPanStart(e.touches[0]);
} else if (e.touches.length === 2) {
isPanning = false; // Stop panning when zooming
lastTouchDistance = getTouchDistance(e.touches);
resetStates() {
this.backgroundZoom = 1;
this.backgroundPanX = 0;
this.backgroundPanY = 0;
this.isPanning = false;
this.lastPanX = 0;
this.lastPanY = 0;
this.lastTouchDistance = 0;
}
}
function handleTouchMove(e) {
e.preventDefault();
if (isPanning && e.touches.length === 1) {
handleBackgroundPan(e.touches[0]);
} else if (e.touches.length === 2) {
const newDist = getTouchDistance(e.touches);
if (lastTouchDistance > 0) {
const zoomFactor = newDist / lastTouchDistance;
backgroundZoom *= zoomFactor;
backgroundZoom = Math.max(0.1, Math.min(5, backgroundZoom)); // Limit zoom range
updateBackgroundTransform();
isCropMode() {
return this.canvas.parentNode.classList.contains('crop-mode');
}
exitCropMode() {
this.canvas.parentNode.classList.remove('crop-mode');
setCanvasTitle("");
this.canvas.removeEventListener('wheel', this.handleBackgroundZoom);
this.canvas.removeEventListener('mousedown', this.handleBackgroundPanStart);
this.canvas.removeEventListener('mousemove', this.handleBackgroundPan);
this.canvas.removeEventListener('mouseup', this.handleBackgroundPanEnd);
this.canvas.removeEventListener('mouseleave', this.handleBackgroundPanEnd);
this.canvas.removeEventListener('touchstart', this.handleTouchStart);
this.canvas.removeEventListener('touchmove', this.handleTouchMove);
this.canvas.removeEventListener('touchend', this.handleBackgroundPanEnd);
this.canvas.removeEventListener('touchcancel', this.handleBackgroundPanEnd);
}
initializeCrop() {
const imageFile = document.getElementById('imageFile');
if (imageFile.files.length == 0) {
fillCanvas('white');
return;
}
lastTouchDistance = newDist;
this.exitCropMode();
this.resetStates();
this.canvas.style.backgroundImage = `url(${URL.createObjectURL(imageFile.files[0])})`;
this.canvas.style.backgroundSize = '100%';
this.canvas.style.backgroundPosition = '';
this.canvas.style.backgroundRepeat = 'no-repeat';
// add event listeners for zoom and pan
this.canvas.addEventListener('wheel', this.handleBackgroundZoom);
this.canvas.addEventListener('mousedown', this.handleBackgroundPanStart);
this.canvas.addEventListener('mousemove', this.handleBackgroundPan);
this.canvas.addEventListener('mouseup', this.handleBackgroundPanEnd);
this.canvas.addEventListener('mouseleave', this.handleBackgroundPanEnd);
// Touch events for mobile devices
this.canvas.addEventListener('touchstart', this.handleTouchStart);
this.canvas.addEventListener('touchmove', this.handleTouchMove);
this.canvas.addEventListener('touchend', this.handleBackgroundPanEnd);
this.canvas.addEventListener('touchcancel', this.handleBackgroundPanEnd);
// Make the canvas transparent
this.ctx.clearRect(0, 0, this.canvas.width, this.canvas.height);
setCanvasTitle("裁剪模式: 可用鼠标滚轮或双指触摸缩放图片");
this.canvas.parentNode.classList.add('crop-mode');
}
}
function handleBackgroundZoom(e) {
e.preventDefault();
const zoomFactor = e.deltaY > 0 ? 0.9 : 1.1;
backgroundZoom *= zoomFactor;
backgroundZoom = Math.max(0.1, Math.min(5, backgroundZoom)); // Limit zoom range
updateBackgroundTransform();
}
finishCrop() {
const imageFile = document.getElementById('imageFile');
if (imageFile.files.length == 0) return;
function handleBackgroundPanStart(e) {
isPanning = true;
lastPanX = e.clientX;
lastPanY = e.clientY;
canvas.style.cursor = 'grabbing';
}
const image = new Image();
image.onload = () => {
URL.revokeObjectURL(image.src);
function handleBackgroundPan(e) {
if (isPanning) {
const deltaX = e.clientX - lastPanX;
const deltaY = e.clientY - lastPanY;
backgroundPanX += deltaX;
backgroundPanY += deltaY;
lastPanX = e.clientX;
lastPanY = e.clientY;
updateBackgroundTransform();
const fieldsetRect = this.canvas.getBoundingClientRect();
const scale = (image.width / fieldsetRect.width) / this.backgroundZoom;
const sx = -this.backgroundPanX * scale;
const sy = -this.backgroundPanY * scale;
const sWidth = fieldsetRect.width * scale;
const sHeight = fieldsetRect.height * scale;
fillCanvas('white');
this.ctx.drawImage(image, sx, sy, sWidth, sHeight, 0, 0, this.canvas.width, this.canvas.height);
this.paintManager.redrawTextElements();
this.paintManager.redrawLineSegments();
convertDithering();
this.exitCropMode();
this.paintManager.saveToHistory(); // Save after finishing crop
};
image.src = URL.createObjectURL(imageFile.files[0]);
}
}
function handleBackgroundPanEnd() {
isPanning = false;
lastTouchDistance = 0; // Reset touch distance
canvas.style.cursor = 'grab';
}
function updateBackgroundTransform() {
canvas.style.backgroundSize = `${100 * backgroundZoom}%`;
canvas.style.backgroundPosition = `${backgroundPanX}px ${backgroundPanY}px`;
}
function getTouchDistance(touches) {
const touch1 = touches[0];
const touch2 = touches[1];
return Math.sqrt(
Math.pow(touch2.clientX - touch1.clientX, 2) +
Math.pow(touch2.clientY - touch1.clientY, 2)
);
}
function initCropTools() {
document.getElementById('crop-zoom-in').addEventListener('click', (e) => {
handleTouchStart(e) {
e.preventDefault();
handleBackgroundZoom({ preventDefault: () => {}, deltaY: -1 });
});
if (e.touches.length === 1) {
this.handleBackgroundPanStart(e.touches[0]);
} else if (e.touches.length === 2) {
this.isPanning = false; // Stop panning when zooming
this.lastTouchDistance = this.getTouchDistance(e.touches);
}
}
document.getElementById('crop-zoom-out').addEventListener('click', (e) => {
handleTouchMove(e) {
e.preventDefault();
handleBackgroundZoom({ preventDefault: () => {}, deltaY: 1 });
});
if (this.isPanning && e.touches.length === 1) {
this.handleBackgroundPan(e.touches[0]);
} else if (e.touches.length === 2) {
const newDist = this.getTouchDistance(e.touches);
if (this.lastTouchDistance > 0) {
const zoomFactor = newDist / this.lastTouchDistance;
this.backgroundZoom *= zoomFactor;
this.backgroundZoom = Math.max(0.1, Math.min(5, this.backgroundZoom)); // Limit zoom range
this.updateBackgroundTransform();
}
this.lastTouchDistance = newDist;
}
}
document.getElementById('crop-move-left').addEventListener('click', (e) => {
handleBackgroundZoom(e) {
e.preventDefault();
backgroundPanX -= 10;
updateBackgroundTransform();
});
const zoomFactor = e.deltaY > 0 ? 0.9 : 1.1;
this.backgroundZoom *= zoomFactor;
this.backgroundZoom = Math.max(0.1, Math.min(5, this.backgroundZoom)); // Limit zoom range
this.updateBackgroundTransform();
}
document.getElementById('crop-move-right').addEventListener('click', (e) => {
e.preventDefault();
backgroundPanX += 10;
updateBackgroundTransform();
});
handleBackgroundPanStart(e) {
this.isPanning = true;
this.lastPanX = e.clientX;
this.lastPanY = e.clientY;
this.canvas.style.cursor = 'grabbing';
}
document.getElementById('crop-move-up').addEventListener('click', (e) => {
e.preventDefault();
backgroundPanY -= 10;
updateBackgroundTransform();
});
handleBackgroundPan(e) {
if (this.isPanning) {
const deltaX = e.clientX - this.lastPanX;
const deltaY = e.clientY - this.lastPanY;
this.backgroundPanX += deltaX;
this.backgroundPanY += deltaY;
this.lastPanX = e.clientX;
this.lastPanY = e.clientY;
this.updateBackgroundTransform();
}
}
document.getElementById('crop-move-down').addEventListener('click', (e) => {
e.preventDefault();
backgroundPanY += 10;
updateBackgroundTransform();
});
handleBackgroundPanEnd() {
this.isPanning = false;
this.lastTouchDistance = 0; // Reset touch distance
this.canvas.style.cursor = 'grab';
}
updateBackgroundTransform() {
this.canvas.style.backgroundSize = `${100 * this.backgroundZoom}%`;
this.canvas.style.backgroundPosition = `${this.backgroundPanX}px ${this.backgroundPanY}px`;
}
getTouchDistance(touches) {
const touch1 = touches[0];
const touch2 = touches[1];
return Math.sqrt(
Math.pow(touch2.clientX - touch1.clientX, 2) +
Math.pow(touch2.clientY - touch1.clientY, 2)
);
}
initCropTools() {
document.getElementById('crop-zoom-in').addEventListener('click', (e) => {
e.preventDefault();
this.handleBackgroundZoom({ preventDefault: () => { }, deltaY: -1 });
});
document.getElementById('crop-zoom-out').addEventListener('click', (e) => {
e.preventDefault();
this.handleBackgroundZoom({ preventDefault: () => { }, deltaY: 1 });
});
document.getElementById('crop-move-left').addEventListener('click', (e) => {
e.preventDefault();
this.backgroundPanX -= 10;
this.updateBackgroundTransform();
});
document.getElementById('crop-move-right').addEventListener('click', (e) => {
e.preventDefault();
this.backgroundPanX += 10;
this.updateBackgroundTransform();
});
document.getElementById('crop-move-up').addEventListener('click', (e) => {
e.preventDefault();
this.backgroundPanY -= 10;
this.updateBackgroundTransform();
});
document.getElementById('crop-move-down').addEventListener('click', (e) => {
e.preventDefault();
this.backgroundPanY += 10;
this.updateBackgroundTransform();
});
}
}

2
html/js/dithering.js
View File

@@ -508,7 +508,7 @@ function bayerDither(imageData, strength, mode) {
// Find closest color in palette
const closest = findClosestColor(clampedR, clampedG, clampedB, mode);
data[idx] = closest.r;
data[idx + 1] = closest.g;
data[idx + 2] = closest.b;

74
html/js/main.js
View File

@@ -2,24 +2,25 @@ let bleDevice, gattServer;
let epdService, epdCharacteristic;
let startTime, msgIndex, appVersion;
let canvas, ctx, textDecoder;
let paintManager, cropManager;
const EpdCmd = {
SET_PINS: 0x00,
INIT: 0x01,
CLEAR: 0x02,
SEND_CMD: 0x03,
SET_PINS: 0x00,
INIT: 0x01,
CLEAR: 0x02,
SEND_CMD: 0x03,
SEND_DATA: 0x04,
REFRESH: 0x05,
SLEEP: 0x06,
REFRESH: 0x05,
SLEEP: 0x06,
SET_TIME: 0x20,
SET_TIME: 0x20,
WRITE_IMG: 0x30, // v1.6
SET_CONFIG: 0x90,
SYS_RESET: 0x91,
SYS_SLEEP: 0x92,
CFG_ERASE: 0x99,
SYS_RESET: 0x91,
SYS_SLEEP: 0x92,
CFG_ERASE: 0x99,
};
const canvasSizes = [
@@ -190,7 +191,7 @@ function convertUC8159(blackWhiteData, redWhiteData) {
}
async function sendimg() {
if (isCropMode()) {
if (cropManager.isCropMode()) {
alert("请先完成图片裁剪！发送已取消。");
return;
}
@@ -249,7 +250,7 @@ async function sendimg() {
}
function downloadDataArray() {
if (isCropMode()) {
if (cropManager.isCropMode()) {
alert("请先完成图片裁剪！下载已取消。");
return;
}
@@ -440,6 +441,7 @@ function addLog(logTXT, action = '') {
const logEntry = document.createElement('div');
const timeSpan = document.createElement('span');
logEntry.className = 'log-line';
timeSpan.className = 'time';
timeSpan.textContent = time;
logEntry.appendChild(timeSpan);
@@ -469,6 +471,14 @@ function fillCanvas(style) {
ctx.fillRect(0, 0, canvas.width, canvas.height);
}
function setCanvasTitle(title) {
const canvasTitle = document.querySelector('.canvas-title');
if (canvasTitle) {
canvasTitle.innerText = title;
canvasTitle.style.display = title && title !== '' ? 'block' : 'none';
}
}
function updateImage() {
const imageFile = document.getElementById('imageFile');
if (imageFile.files.length == 0) {
@@ -480,16 +490,16 @@ function updateImage() {
image.onload = function () {
URL.revokeObjectURL(this.src);
if (image.width / image.height == canvas.width / canvas.height) {
if (isCropMode()) exitCropMode();
if (cropManager.isCropMode()) cropManager.exitCropMode();
ctx.drawImage(image, 0, 0, image.width, image.height, 0, 0, canvas.width, canvas.height);
redrawTextElements();
redrawLineSegments();
paintManager.redrawTextElements();
paintManager.redrawLineSegments();
convertDithering();
saveToHistory(); // Save after loading image
paintManager.saveToHistory(); // Save after loading image
} else {
alert("图片宽高比例与画布不匹配，将进入裁剪模式。\n请放大图片后移动图片使其充满画布，再点击“完成”按钮。");
setActiveTool(null, '');
initializeCrop();
alert(`图片宽高比例与画布不匹配，将进入裁剪模式。\n请放大图片后移动图片使其充满画布, 再点击"完成"按钮。`);
paintManager.setActiveTool(null, '');
cropManager.initializeCrop();
}
};
image.src = URL.createObjectURL(imageFile.files[0]);
@@ -529,10 +539,9 @@ function rotateCanvas() {
function clearCanvas() {
if (confirm('清除画布内容?')) {
fillCanvas('white');
textElements = []; // Clear stored text positions
lineSegments = []; // Clear stored line segments
if (isCropMode()) exitCropMode();
saveToHistory(); // Save cleared canvas to history
paintManager.clearElements(); // Clear stored text positions and line segments
if (cropManager.isCropMode()) cropManager.exitCropMode();
paintManager.saveToHistory(); // Save cleared canvas to history
return true;
}
return false;
@@ -560,14 +569,14 @@ function convertDithering() {
function initEventHandlers() {
document.getElementById("epddriver").addEventListener("change", updateDitcherOptions);
document.getElementById("imageFile").addEventListener("change", updateImage);
document.getElementById("ditherMode").addEventListener("change", finishCrop);
document.getElementById("ditherAlg").addEventListener("change", finishCrop);
document.getElementById("ditherMode").addEventListener("change", () => cropManager.finishCrop());
document.getElementById("ditherAlg").addEventListener("change", () => cropManager.finishCrop());
document.getElementById("ditherStrength").addEventListener("input", function () {
finishCrop();
cropManager.finishCrop();
document.getElementById("ditherStrengthValue").innerText = parseFloat(this.value).toFixed(1);
});
document.getElementById("ditherContrast").addEventListener("input", function () {
finishCrop();
cropManager.finishCrop();
document.getElementById("ditherContrastValue").innerText = parseFloat(this.value).toFixed(1);
});
document.getElementById("canvasSize").addEventListener("change", updateCanvasSize);
@@ -579,12 +588,12 @@ function checkDebugMode() {
const debugMode = urlParams.get('debug');
if (debugMode === 'true') {
document.body.classList.add('debug-mode');
document.body.classList.add('dark-mode');
link.innerHTML = '正常模式';
link.setAttribute('href', window.location.pathname);
addLog("注意：开发模式功能已开启！不懂请不要随意修改，否则后果自负！");
} else {
document.body.classList.remove('debug-mode');
document.body.classList.remove('dark-mode');
link.innerHTML = '开发模式';
link.setAttribute('href', window.location.pathname + '?debug=true');
}
@@ -598,8 +607,11 @@ document.body.onload = () => {
ctx.fillStyle = 'white';
ctx.fillRect(0, 0, canvas.width, canvas.height);
initPaintTools();
initCropTools();
paintManager = new PaintManager(canvas, ctx);
cropManager = new CropManager(canvas, ctx, paintManager);
paintManager.initPaintTools();
cropManager.initCropTools();
initEventHandlers();
updateButtonStatus();
checkDebugMode();

913
html/js/paint.js
View File

@@ -1,502 +1,515 @@
let painting = false;
let lastX = 0;
let lastY = 0;
let brushColor = "#000000";
let brushSize = 2;
let currentTool = null; // Start with no tool selected
let textElements = []; // Store text elements for re-rendering after dithering
let lineSegments = []; // Store line segments for re-rendering after dithering
let isTextPlacementMode = false;
let draggingCanvasContext = null; // Backup of the canvas for dragging
let selectedTextElement = null; // Track the currently selected text for dragging
let isDraggingText = false; // Track if we're currently dragging text
let dragOffsetX = 0; // Offset from mouse to text position when dragging
let dragOffsetY = 0;
let textBold = false; // Track if text should be bold
let textItalic = false; // Track if text should be italic
class PaintManager {
constructor(canvas, ctx) {
this.canvas = canvas;
this.ctx = ctx;
this.painting = false;
this.lastX = 0;
this.lastY = 0;
this.brushColor = "#000000";
this.brushSize = 2;
this.currentTool = null;
this.textElements = [];
this.lineSegments = [];
this.isTextPlacementMode = false;
this.draggingCanvasContext = null;
this.selectedTextElement = null;
this.isDraggingText = false;
this.dragOffsetX = 0;
this.dragOffsetY = 0;
this.textBold = false;
this.textItalic = false;
// Undo/Redo functionality
let historyStack = []; // Stack to store canvas history
let historyStep = -1; // Current position in history stack
const MAX_HISTORY = 50; // Maximum number of undo steps
// Undo/Redo functionality
this.historyStack = [];
this.historyStep = -1;
this.MAX_HISTORY = 50;
function setCanvasTitle(title) {
const canvasTitle = document.querySelector('.canvas-title');
if (canvasTitle) {
canvasTitle.innerText = title;
canvasTitle.style.display = title && title !== '' ? 'block' : 'none';
// Bind event handlers
this.startPaint = this.startPaint.bind(this);
this.paint = this.paint.bind(this);
this.endPaint = this.endPaint.bind(this);
this.handleCanvasClick = this.handleCanvasClick.bind(this);
this.onTouchStart = this.onTouchStart.bind(this);
this.onTouchMove = this.onTouchMove.bind(this);
this.onTouchEnd = this.onTouchEnd.bind(this);
this.handleKeyboard = this.handleKeyboard.bind(this);
}
}
function saveToHistory() {
// Remove any states after current step (when user drew something after undoing)
historyStack = historyStack.slice(0, historyStep + 1);
// Save current canvas state along with text and line data
const canvasState = {
imageData: ctx.getImageData(0, 0, canvas.width, canvas.height),
textElements: JSON.parse(JSON.stringify(textElements)),
lineSegments: JSON.parse(JSON.stringify(lineSegments))
};
historyStack.push(canvasState);
historyStep++;
// Limit history size
if (historyStack.length > MAX_HISTORY) {
historyStack.shift();
historyStep--;
}
updateUndoRedoButtons();
}
saveToHistory() {
// Remove any states after current step (when user drew something after undoing)
this.historyStack = this.historyStack.slice(0, this.historyStep + 1);
function undo() {
if (historyStep > 0) {
historyStep--;
restoreFromHistory();
}
}
// Save current canvas state along with text and line data
const canvasState = {
imageData: this.ctx.getImageData(0, 0, this.canvas.width, this.canvas.height),
textElements: JSON.parse(JSON.stringify(this.textElements)),
lineSegments: JSON.parse(JSON.stringify(this.lineSegments))
};
function redo() {
if (historyStep < historyStack.length - 1) {
historyStep++;
restoreFromHistory();
}
}
this.historyStack.push(canvasState);
this.historyStep++;
function restoreFromHistory() {
if (historyStep >= 0 && historyStep < historyStack.length) {
const state = historyStack[historyStep];
// Restore canvas image
ctx.putImageData(state.imageData, 0, 0);
// Restore text and line data
textElements = JSON.parse(JSON.stringify(state.textElements));
lineSegments = JSON.parse(JSON.stringify(state.lineSegments));
updateUndoRedoButtons();
}
}
function updateUndoRedoButtons() {
const undoBtn = document.getElementById('undo-btn');
const redoBtn = document.getElementById('redo-btn');
if (undoBtn) {
undoBtn.disabled = historyStep <= 0;
}
if (redoBtn) {
redoBtn.disabled = historyStep >= historyStack.length - 1;
}
}
function initPaintTools() {
document.getElementById('brush-mode').addEventListener('click', () => {
if (currentTool === 'brush') {
setActiveTool(null, '');
} else {
setActiveTool('brush', '画笔模式');
brushColor = document.getElementById('brush-color').value;
// Limit history size
if (this.historyStack.length > this.MAX_HISTORY) {
this.historyStack.shift();
this.historyStep--;
}
});
document.getElementById('eraser-mode').addEventListener('click', () => {
if (currentTool === 'eraser') {
setActiveTool(null, '');
} else {
setActiveTool('eraser', '橡皮擦');
brushColor = "#FFFFFF";
this.updateUndoRedoButtons();
}
undo() {
if (this.historyStep > 0) {
this.historyStep--;
this.restoreFromHistory();
}
});
}
document.getElementById('text-mode').addEventListener('click', () => {
if (currentTool === 'text') {
setActiveTool(null, '');
} else {
setActiveTool('text', '插入文字');
brushColor = document.getElementById('brush-color').value;
redo() {
if (this.historyStep < this.historyStack.length - 1) {
this.historyStep++;
this.restoreFromHistory();
}
});
document.getElementById('brush-color').addEventListener('change', (e) => {
brushColor = e.target.value;
});
document.getElementById('brush-size').addEventListener('change', (e) => {
brushSize = parseInt(e.target.value);
});
}
document.getElementById('add-text-btn').addEventListener('click', startTextPlacement);
restoreFromHistory() {
if (this.historyStep >= 0 && this.historyStep < this.historyStack.length) {
const state = this.historyStack[this.historyStep];
// Add event listeners for bold and italic buttons
document.getElementById('text-bold').addEventListener('click', () => {
textBold = !textBold;
document.getElementById('text-bold').classList.toggle('primary', textBold);
});
document.getElementById('text-italic').addEventListener('click', () => {
textItalic = !textItalic;
document.getElementById('text-italic').classList.toggle('primary', textItalic);
});
// Restore canvas image
this.ctx.putImageData(state.imageData, 0, 0);
// Add undo/redo button listeners
document.getElementById('undo-btn').addEventListener('click', undo);
document.getElementById('redo-btn').addEventListener('click', redo);
canvas.addEventListener('mousedown', startPaint);
canvas.addEventListener('mousemove', paint);
canvas.addEventListener('mouseup', endPaint);
canvas.addEventListener('mouseleave', endPaint);
canvas.addEventListener('click', handleCanvasClick);
// Touch support
canvas.addEventListener('touchstart', onTouchStart);
canvas.addEventListener('touchmove', onTouchMove);
canvas.addEventListener('touchend', onTouchEnd);
// Keyboard shortcuts for undo/redo
document.addEventListener('keydown', (e) => {
// Restore text and line data
this.textElements = JSON.parse(JSON.stringify(state.textElements));
this.lineSegments = JSON.parse(JSON.stringify(state.lineSegments));
this.updateUndoRedoButtons();
}
}
updateUndoRedoButtons() {
const undoBtn = document.getElementById('undo-btn');
const redoBtn = document.getElementById('redo-btn');
if (undoBtn) {
undoBtn.disabled = this.historyStep <= 0;
}
if (redoBtn) {
redoBtn.disabled = this.historyStep >= this.historyStack.length - 1;
}
}
initPaintTools() {
document.getElementById('brush-mode').addEventListener('click', () => {
if (this.currentTool === 'brush') {
this.setActiveTool(null, '');
} else {
this.setActiveTool('brush', '画笔模式');
this.brushColor = document.getElementById('brush-color').value;
}
});
document.getElementById('eraser-mode').addEventListener('click', () => {
if (this.currentTool === 'eraser') {
this.setActiveTool(null, '');
} else {
this.setActiveTool('eraser', '橡皮擦');
this.brushColor = "#FFFFFF";
}
});
document.getElementById('text-mode').addEventListener('click', () => {
if (this.currentTool === 'text') {
this.setActiveTool(null, '');
} else {
this.setActiveTool('text', '插入文字');
this.brushColor = document.getElementById('brush-color').value;
}
});
document.getElementById('brush-color').addEventListener('change', (e) => {
this.brushColor = e.target.value;
});
document.getElementById('brush-size').addEventListener('change', (e) => {
this.brushSize = parseInt(e.target.value);
});
document.getElementById('add-text-btn').addEventListener('click', () => this.startTextPlacement());
// Add event listeners for bold and italic buttons
document.getElementById('text-bold').addEventListener('click', () => {
this.textBold = !this.textBold;
document.getElementById('text-bold').classList.toggle('primary', this.textBold);
});
document.getElementById('text-italic').addEventListener('click', () => {
this.textItalic = !this.textItalic;
document.getElementById('text-italic').classList.toggle('primary', this.textItalic);
});
// Add undo/redo button listeners
document.getElementById('undo-btn').addEventListener('click', () => this.undo());
document.getElementById('redo-btn').addEventListener('click', () => this.redo());
this.canvas.addEventListener('mousedown', this.startPaint);
this.canvas.addEventListener('mousemove', this.paint);
this.canvas.addEventListener('mouseup', this.endPaint);
this.canvas.addEventListener('mouseleave', this.endPaint);
this.canvas.addEventListener('click', this.handleCanvasClick);
// Touch support
this.canvas.addEventListener('touchstart', this.onTouchStart);
this.canvas.addEventListener('touchmove', this.onTouchMove);
this.canvas.addEventListener('touchend', this.onTouchEnd);
// Keyboard shortcuts for undo/redo
document.addEventListener('keydown', this.handleKeyboard);
// Initialize history with blank canvas state
this.saveToHistory();
}
handleKeyboard(e) {
// Ctrl+Z or Cmd+Z for undo
if ((e.ctrlKey || e.metaKey) && e.key === 'z' && !e.shiftKey) {
e.preventDefault();
undo();
this.undo();
}
// Ctrl+Y or Ctrl+Shift+Z or Cmd+Shift+Z for redo
else if ((e.ctrlKey || e.metaKey) && (e.key === 'y' || (e.shiftKey && e.key === 'z'))) {
e.preventDefault();
redo();
}
});
// Initialize history with blank canvas state
saveToHistory();
}
function setActiveTool(tool, title) {
setCanvasTitle(title);
currentTool = tool;
canvas.parentNode.classList.toggle('brush-mode', currentTool === 'brush');
canvas.parentNode.classList.toggle('eraser-mode', currentTool === 'eraser');
canvas.parentNode.classList.toggle('text-mode', currentTool === 'text');
document.getElementById('brush-mode').classList.toggle('active', currentTool === 'brush');
document.getElementById('eraser-mode').classList.toggle('active', currentTool === 'eraser');
document.getElementById('text-mode').classList.toggle('active', currentTool === 'text');
document.getElementById('brush-color').disabled = currentTool === 'eraser';
document.getElementById('brush-size').disabled = currentTool === 'text';
document.getElementById('undo-btn').classList.toggle('hide', currentTool === null);
document.getElementById('redo-btn').classList.toggle('hide', currentTool === null);
// Cancel any pending text placement
cancelTextPlacement();
}
function startPaint(e) {
if (!currentTool) return;
if (currentTool === 'text') {
// Check if we're clicking on a text element to drag
const textElement = findTextElementAt(e);
if (textElement && textElement === selectedTextElement) {
isDraggingText = true;
const rect = canvas.getBoundingClientRect();
const scaleX = canvas.width / rect.width;
const scaleY = canvas.height / rect.height;
const x = (e.clientX - rect.left) * scaleX;
const y = (e.clientY - rect.top) * scaleY;
// Calculate offset for smooth dragging
dragOffsetX = textElement.x - x;
dragOffsetY = textElement.y - y;
return; // Don't start drawing
}
} else {
painting = true;
draw(e);
}
}
function endPaint() {
if (painting || isDraggingText) {
saveToHistory(); // Save state after drawing or dragging text
}
painting = false;
isDraggingText = false;
lastX = 0;
lastY = 0;
}
function paint(e) {
if (!currentTool) return;
if (currentTool === 'text') {
if (isDraggingText && selectedTextElement) {
dragText(e);
}
} else {
if (painting) {
draw(e);
this.redo();
}
}
}
function draw(e) {
const rect = canvas.getBoundingClientRect();
const scaleX = canvas.width / rect.width;
const scaleY = canvas.height / rect.height;
const x = (e.clientX - rect.left) * scaleX;
const y = (e.clientY - rect.top) * scaleY;
ctx.lineJoin = 'round';
ctx.lineCap = 'round';
ctx.strokeStyle = brushColor;
ctx.lineWidth = brushSize;
ctx.beginPath();
if (lastX === 0 && lastY === 0) {
// For the first point, just do a dot
ctx.moveTo(x, y);
ctx.lineTo(x+0.1, y+0.1);
// Store the dot for redrawing
lineSegments.push({
type: 'dot',
x: x,
y: y,
color: brushColor,
size: brushSize
});
} else {
// Connect to the previous point
ctx.moveTo(lastX, lastY);
ctx.lineTo(x, y);
// Store the line segment for redrawing
lineSegments.push({
type: 'line',
x1: lastX,
y1: lastY,
x2: x,
y2: y,
color: brushColor,
size: brushSize
});
setActiveTool(tool, title) {
setCanvasTitle(title);
this.currentTool = tool;
this.canvas.parentNode.classList.toggle('brush-mode', this.currentTool === 'brush');
this.canvas.parentNode.classList.toggle('eraser-mode', this.currentTool === 'eraser');
this.canvas.parentNode.classList.toggle('text-mode', this.currentTool === 'text');
document.getElementById('brush-mode').classList.toggle('active', this.currentTool === 'brush');
document.getElementById('eraser-mode').classList.toggle('active', this.currentTool === 'eraser');
document.getElementById('text-mode').classList.toggle('active', this.currentTool === 'text');
document.getElementById('brush-color').disabled = this.currentTool === 'eraser';
document.getElementById('brush-size').disabled = this.currentTool === 'text';
document.getElementById('undo-btn').classList.toggle('hide', this.currentTool === null);
document.getElementById('redo-btn').classList.toggle('hide', this.currentTool === null);
// Cancel any pending text placement
this.cancelTextPlacement();
}
ctx.stroke();
lastX = x;
lastY = y;
}
function handleCanvasClick(e) {
if (currentTool === 'text' && isTextPlacementMode) {
placeText(e);
startPaint(e) {
if (!this.currentTool) return;
if (this.currentTool === 'text') {
// Check if we're clicking on a text element to drag
const textElement = this.findTextElementAt(e);
if (textElement && textElement === this.selectedTextElement) {
this.isDraggingText = true;
const rect = this.canvas.getBoundingClientRect();
const scaleX = this.canvas.width / rect.width;
const scaleY = this.canvas.height / rect.height;
const x = (e.clientX - rect.left) * scaleX;
const y = (e.clientY - rect.top) * scaleY;
// Calculate offset for smooth dragging
this.dragOffsetX = textElement.x - x;
this.dragOffsetY = textElement.y - y;
return; // Don't start drawing
}
} else {
this.painting = true;
this.draw(e);
}
}
}
// Improve touch handling for text placement
function onTouchStart(e) {
endPaint() {
if (this.painting || this.isDraggingText) {
this.saveToHistory(); // Save state after drawing or dragging text
}
this.painting = false;
this.isDraggingText = false;
this.lastX = 0;
this.lastY = 0;
}
paint(e) {
if (!this.currentTool) return;
if (this.currentTool === 'text') {
if (this.isDraggingText && this.selectedTextElement) {
this.dragText(e);
}
} else {
if (this.painting) {
this.draw(e);
}
}
}
draw(e) {
const rect = this.canvas.getBoundingClientRect();
const scaleX = this.canvas.width / rect.width;
const scaleY = this.canvas.height / rect.height;
const x = (e.clientX - rect.left) * scaleX;
const y = (e.clientY - rect.top) * scaleY;
this.ctx.lineJoin = 'round';
this.ctx.lineCap = 'round';
this.ctx.strokeStyle = this.brushColor;
this.ctx.lineWidth = this.brushSize;
this.ctx.beginPath();
if (this.lastX === 0 && this.lastY === 0) {
// For the first point, just do a dot
this.ctx.moveTo(x, y);
this.ctx.lineTo(x + 0.1, y + 0.1);
// Store the dot for redrawing
this.lineSegments.push({
type: 'dot',
x: x,
y: y,
color: this.brushColor,
size: this.brushSize
});
} else {
// Connect to the previous point
this.ctx.moveTo(this.lastX, this.lastY);
this.ctx.lineTo(x, y);
// Store the line segment for redrawing
this.lineSegments.push({
type: 'line',
x1: this.lastX,
y1: this.lastY,
x2: x,
y2: y,
color: this.brushColor,
size: this.brushSize
});
}
this.ctx.stroke();
this.lastX = x;
this.lastY = y;
}
handleCanvasClick(e) {
if (this.currentTool === 'text' && this.isTextPlacementMode) {
this.placeText(e);
}
}
onTouchStart(e) {
e.preventDefault();
const touch = e.touches[0];
// If in text placement mode, handle as a click
if (currentTool === 'text' && isTextPlacementMode) {
const mouseEvent = new MouseEvent('click', {
clientX: touch.clientX,
clientY: touch.clientY
});
canvas.dispatchEvent(mouseEvent);
return;
}
// Otherwise handle as normal drawing
const mouseEvent = new MouseEvent('mousedown', {
if (this.currentTool === 'text' && this.isTextPlacementMode) {
const mouseEvent = new MouseEvent('click', {
clientX: touch.clientX,
clientY: touch.clientY
});
canvas.dispatchEvent(mouseEvent);
}
});
this.canvas.dispatchEvent(mouseEvent);
return;
}
function onTouchMove(e) {
// Otherwise handle as normal drawing
const mouseEvent = new MouseEvent('mousedown', {
clientX: touch.clientX,
clientY: touch.clientY
});
this.canvas.dispatchEvent(mouseEvent);
}
onTouchMove(e) {
e.preventDefault();
const touch = e.touches[0];
const mouseEvent = new MouseEvent('mousemove', {
clientX: touch.clientX,
clientY: touch.clientY
clientX: touch.clientX,
clientY: touch.clientY
});
canvas.dispatchEvent(mouseEvent);
}
this.canvas.dispatchEvent(mouseEvent);
}
function onTouchEnd(e) {
onTouchEnd(e) {
e.preventDefault();
endPaint();
}
function dragText(e) {
const rect = canvas.getBoundingClientRect();
const scaleX = canvas.width / rect.width;
const scaleY = canvas.height / rect.height;
const x = (e.clientX - rect.left) * scaleX;
const y = (e.clientY - rect.top) * scaleY;
// Update text position with offset
selectedTextElement.x = x + dragOffsetX;
selectedTextElement.y = y + dragOffsetY;
// Redraw selected text element
if (draggingCanvasContext) {
ctx.putImageData(draggingCanvasContext, 0, 0);
} else {
ctx.clearRect(0, 0, canvas.width, canvas.height);
this.endPaint();
}
ctx.font = selectedTextElement.font;
ctx.fillStyle = selectedTextElement.color;
ctx.fillText(selectedTextElement.text, selectedTextElement.x, selectedTextElement.y);
}
function findTextElementAt(e) {
const rect = canvas.getBoundingClientRect();
const scaleX = canvas.width / rect.width;
const scaleY = canvas.height / rect.height;
const x = (e.clientX - rect.left) * scaleX;
const y = (e.clientY - rect.top) * scaleY;
// Search through text elements in reverse order (top-most first)
for (let i = textElements.length - 1; i >= 0; i--) {
const text = textElements[i];
// Calculate text dimensions
ctx.font = text.font;
const textWidth = ctx.measureText(text.text).width;
dragText(e) {
const rect = this.canvas.getBoundingClientRect();
const scaleX = this.canvas.width / rect.width;
const scaleY = this.canvas.height / rect.height;
const x = (e.clientX - rect.left) * scaleX;
const y = (e.clientY - rect.top) * scaleY;
// Extract font size correctly from the font string
// This handles "bold 14px Arial", "italic 14px Arial", "bold italic 14px Arial", etc.
const fontSizeMatch = text.font.match(/(\d+)px/);
const fontSize = fontSizeMatch ? parseInt(fontSizeMatch[1]) : 14; // Default to 14 if not found
const textHeight = fontSize * 1.2; // Approximate height
// Check if click is within text bounds (allowing for some margin)
const margin = 5;
if (x >= text.x - margin &&
x <= text.x + textWidth + margin &&
y >= text.y - textHeight + margin &&
y <= text.y + margin) {
return text;
// Update text position with offset
this.selectedTextElement.x = x + this.dragOffsetX;
this.selectedTextElement.y = y + this.dragOffsetY;
// Redraw selected text element
if (this.draggingCanvasContext) {
this.ctx.putImageData(this.draggingCanvasContext, 0, 0);
} else {
this.ctx.clearRect(0, 0, this.canvas.width, this.canvas.height);
}
this.ctx.font = this.selectedTextElement.font;
this.ctx.fillStyle = this.selectedTextElement.color;
this.ctx.fillText(this.selectedTextElement.text, this.selectedTextElement.x, this.selectedTextElement.y);
}
return null;
}
function startTextPlacement() {
const text = document.getElementById('text-input').value.trim();
if (!text) {
findTextElementAt(e) {
const rect = this.canvas.getBoundingClientRect();
const scaleX = this.canvas.width / rect.width;
const scaleY = this.canvas.height / rect.height;
const x = (e.clientX - rect.left) * scaleX;
const y = (e.clientY - rect.top) * scaleY;
// Search through text elements in reverse order (top-most first)
for (let i = this.textElements.length - 1; i >= 0; i--) {
const text = this.textElements[i];
// Calculate text dimensions
this.ctx.font = text.font;
const textWidth = this.ctx.measureText(text.text).width;
// Extract font size correctly from the font string
const fontSizeMatch = text.font.match(/(\d+)px/);
const fontSize = fontSizeMatch ? parseInt(fontSizeMatch[1]) : 14;
const textHeight = fontSize * 1.2; // Approximate height
// Check if click is within text bounds (allowing for some margin)
const margin = 5;
if (x >= text.x - margin &&
x <= text.x + textWidth + margin &&
y >= text.y - textHeight + margin &&
y <= text.y + margin) {
return text;
}
}
return null;
}
startTextPlacement() {
const text = document.getElementById('text-input').value.trim();
if (!text) {
alert('请输入文字内容');
return;
}
this.isTextPlacementMode = true;
// Add visual feedback
setCanvasTitle('点击画布放置文字');
this.canvas.classList.add('text-placement-mode');
}
isTextPlacementMode = true;
cancelTextPlacement() {
this.isTextPlacementMode = false;
this.canvas.classList.remove('text-placement-mode');
// Add visual feedback
setCanvasTitle('点击画布放置文字');
canvas.classList.add('text-placement-mode');
}
function cancelTextPlacement() {
isTextPlacementMode = false;
canvas.classList.remove('text-placement-mode');
// reset dragging state
isDraggingText = false;
dragOffsetX = 0;
dragOffsetY = 0;
selectedTextElement = null;
draggingCanvasContext = null;
}
function placeText(e) {
const rect = canvas.getBoundingClientRect();
const scaleX = canvas.width / rect.width;
const scaleY = canvas.height / rect.height;
const x = (e.clientX - rect.left) * scaleX;
const y = (e.clientY - rect.top) * scaleY;
const text = document.getElementById('text-input').value;
const fontFamily = document.getElementById('font-family').value;
const fontSize = document.getElementById('font-size').value;
// Build font style string
let fontStyle = '';
if (textItalic) fontStyle += 'italic ';
if (textBold) fontStyle += 'bold ';
// Create a new text element
const newText = {
text: text,
x: x,
y: y,
font: `${fontStyle}${fontSize}px ${fontFamily}`,
color: brushColor
};
// Add to our list of text elements
textElements.push(newText);
// Select this text element for immediate dragging
selectedTextElement = newText;
draggingCanvasContext = ctx.getImageData(0, 0, canvas.width, canvas.height);
// Draw text on canvas
ctx.font = newText.font;
ctx.fillStyle = newText.color;
ctx.fillText(newText.text, newText.x, newText.y);
// Save to history after placing text
saveToHistory();
// Reset
document.getElementById('text-input').value = '';
isTextPlacementMode = false;
canvas.classList.remove('text-placement-mode');
setCanvasTitle('拖动新添加文字可调整位置');
}
function redrawTextElements() {
// Redraw all text elements after dithering
textElements.forEach(item => {
ctx.font = item.font;
ctx.fillStyle = item.color;
ctx.fillText(item.text, item.x, item.y);
});
}
function redrawLineSegments() {
// Redraw all line segments after dithering
lineSegments.forEach(segment => {
ctx.lineJoin = 'round';
ctx.lineCap = 'round';
ctx.strokeStyle = segment.color;
ctx.lineWidth = segment.size;
ctx.beginPath();
if (segment.type === 'dot') {
ctx.moveTo(segment.x, segment.y);
ctx.lineTo(segment.x+0.1, segment.y+0.1);
} else {
ctx.moveTo(segment.x1, segment.y1);
ctx.lineTo(segment.x2, segment.y2);
}
ctx.stroke();
});
// reset dragging state
this.isDraggingText = false;
this.dragOffsetX = 0;
this.dragOffsetY = 0;
this.selectedTextElement = null;
this.draggingCanvasContext = null;
}
placeText(e) {
const rect = this.canvas.getBoundingClientRect();
const scaleX = this.canvas.width / rect.width;
const scaleY = this.canvas.height / rect.height;
const x = (e.clientX - rect.left) * scaleX;
const y = (e.clientY - rect.top) * scaleY;
const text = document.getElementById('text-input').value;
const fontFamily = document.getElementById('font-family').value;
const fontSize = document.getElementById('font-size').value;
// Build font style string
let fontStyle = '';
if (this.textItalic) fontStyle += 'italic ';
if (this.textBold) fontStyle += 'bold ';
// Create a new text element
const newText = {
text: text,
x: x,
y: y,
font: `${fontStyle}${fontSize}px ${fontFamily}`,
color: this.brushColor
};
// Add to our list of text elements
this.textElements.push(newText);
// Select this text element for immediate dragging
this.selectedTextElement = newText;
this.draggingCanvasContext = this.ctx.getImageData(0, 0, this.canvas.width, this.canvas.height);
// Draw text on canvas
this.ctx.font = newText.font;
this.ctx.fillStyle = newText.color;
this.ctx.fillText(newText.text, newText.x, newText.y);
// Save to history after placing text
this.saveToHistory();
// Reset
document.getElementById('text-input').value = '';
this.isTextPlacementMode = false;
this.canvas.classList.remove('text-placement-mode');
setCanvasTitle('拖动新添加文字可调整位置');
}
redrawTextElements() {
// Redraw all text elements after dithering
this.textElements.forEach(item => {
this.ctx.font = item.font;
this.ctx.fillStyle = item.color;
this.ctx.fillText(item.text, item.x, item.y);
});
}
redrawLineSegments() {
// Redraw all line segments after dithering
this.lineSegments.forEach(segment => {
this.ctx.lineJoin = 'round';
this.ctx.lineCap = 'round';
this.ctx.strokeStyle = segment.color;
this.ctx.lineWidth = segment.size;
this.ctx.beginPath();
if (segment.type === 'dot') {
this.ctx.moveTo(segment.x, segment.y);
this.ctx.lineTo(segment.x + 0.1, segment.y + 0.1);
} else {
this.ctx.moveTo(segment.x1, segment.y1);
this.ctx.lineTo(segment.x2, segment.y2);
}
this.ctx.stroke();
});
}
clearElements() {
this.textElements = [];
this.lineSegments = [];
}
}