mirror of
https://github.com/jiojciojsioe3/a3cjroijsiojiorj.git
synced 2024-12-23 01:36:14 +08:00
197 lines
4.4 KiB
HTML
197 lines
4.4 KiB
HTML
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<html>
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<head>
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<title>Merge Image</title>
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<style>
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body{
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transition: background-color 0.5s;
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background-color: #fff;
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font-family: sans-serif;
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font-size: 20px;
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}
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input[type=number]{
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font-family: monospace;
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font-size: 18px;
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padding: 5px;
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}
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#settings{
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display: flex;
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margin-bottom: 18px;
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height: 40px;
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}
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label{
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display: flex;
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align-items: center;
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height: 100%;
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}
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label:not(:first-child){
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margin-left: 10px;
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border-left: 2px solid #ccc;
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padding-left: 8px;
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}
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input{
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margin: 5px;
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}
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</style>
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</head>
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<body>
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<div id="settings">
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<label>
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Max height
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<input id="max-height" type="number" min="1" max="5000" step="1" value="2000">
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px
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</label>
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<label>
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Spacing
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<input id="spacing" type="number" min="0" max="100" step="1" value="0">
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px
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</label>
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<label>
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<input id="vertical" type="checkbox" checked>
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Vertical
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</label>
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</div>
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<div id="hint">Drag and drop your images here...</div>
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<canvas id="canvas"></canvas>
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<script>
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var canvas = document.getElementById("canvas")
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var ctx = canvas.getContext("2d")
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var allFiles
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var maxHeightElement = document.getElementById("max-height")
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var spacingElement = document.getElementById("spacing")
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var maxHeight = parseInt(maxHeightElement.value)
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var spacing = parseInt(spacingElement.value)
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var vectical = true
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document.addEventListener("dragover", event => {
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event.preventDefault()
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event.dataTransfer.dropEffect = "copy"
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document.body.style.backgroundColor = "#ccc"
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})
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document.addEventListener("dragleave", () => {
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document.body.style.backgroundColor = "#fff"
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})
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document.addEventListener("drop", event => {
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document.getElementById("hint").style.display = "none"
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document.body.style.backgroundColor = "#fff"
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event.preventDefault()
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allFiles = []
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var promises = []
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for(let file of event.dataTransfer.files){
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promises.push(readFile(file))
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}
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Promise.all(promises).then(drawCanvas)
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})
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maxHeightElement.addEventListener("change", event => {
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var value = parseInt(event.currentTarget.value)
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if(value >= 1 && value <= 5000){
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maxHeight = value
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if(allFiles && allFiles.length){
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drawCanvas()
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}
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}
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})
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spacingElement.addEventListener("change", event => {
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var value = parseInt(event.currentTarget.value)
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if(value >= 0 && value <= 100){
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spacing = value
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if(allFiles && allFiles.length){
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drawCanvas()
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}
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}
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})
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document.getElementById("vertical").addEventListener("change", event => {
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vertical = event.currentTarget.checked
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if(allFiles && allFiles.length){
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drawCanvas()
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}
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})
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function readFile(file){
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return new Promise((resolve, reject) => {
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var reader = new FileReader()
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reader.addEventListener("load", () => {
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if(reader.result){
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var img = document.createElement("img")
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img.addEventListener("load", () => {
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var noExt = file.name.slice(0, file.name.lastIndexOf("."))
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if(parseInt(noExt) == noExt){
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var name = parseInt(noExt)
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}else{
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var name = noExt
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}
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allFiles.push({
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name: name,
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img: img
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})
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resolve()
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})
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img.addEventListener("error", resolve)
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img.addEventListener("abort", resolve)
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img.src = reader.result
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}else{
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resolve()
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}
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})
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reader.addEventListener("error", resolve)
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reader.addEventListener("abort", resolve)
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reader.readAsDataURL(file)
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})
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}
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function drawCanvas(){
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var x = 0
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var y = 0
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var biggestWidth = 0
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var canvasWidth = 0
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var canvasHeight = 0
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allFiles.sort((a, b) => a.name > b.name ? 1 : -1)
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for(var i in allFiles){
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var file = allFiles[i]
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if(vertical){
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if(y + file.img.height > maxHeight + spacing){
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y = 0
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x += biggestWidth
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biggestWidth = 0
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}
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file.x = x + (x === 0 ? 0 : spacing)
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file.y = y + (y === 0 ? 0 : spacing)
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y += file.img.height + (y === 0 ? 0 : spacing)
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if(file.img.width > biggestWidth){
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biggestWidth = file.img.width
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}
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if(y > canvasHeight){
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canvasHeight = y
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}
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}else{
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if(x + file.img.width > maxHeight + spacing){
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x = 0
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y += biggestWidth
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biggestWidth = 0
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}
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file.x = x + (x === 0 ? 0 : spacing)
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file.y = y + (y === 0 ? 0 : spacing)
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x += file.img.width + (x === 0 ? 0 : spacing)
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if(file.img.height > biggestWidth){
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biggestWidth = file.img.height
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}
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if(x > canvasWidth){
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canvasWidth = x
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}
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}
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}
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if(vertical){
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canvasWidth = x + biggestWidth
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}else{
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canvasHeight = y + biggestWidth
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}
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canvas.width = canvasWidth
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canvas.height = canvasHeight
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for(var i in allFiles){
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var file = allFiles[i]
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ctx.drawImage(file.img, file.x, file.y, file.img.width, file.img.height)
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}
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}
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</script>
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</body>
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</html>
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