生成iPhone AppIcon多种尺寸图标
根据拖拽进来的1024*1024px的图片,动态生成iPhone AppIcon多种尺寸图标
拖拽文件到这里
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| <!DOCTYPE HTML> <html lang="en-US"> <head> <meta charset="UTF-8"> <title>AppIcon 生成</title> <style type="text/css"> html,body{ height: 100%; margin: 0; padding: 0; } #dragfile{ width: 900px; height: 200px; box-sizing: border-box; margin: 10px auto; border: 1px dashed #ccc; text-align: center; line-height: 200px; background-color: #f2f2f2; } #dragfile img{ max-height: 200px; max-width: 900px; } .filecontainer{ width: 900px; margin: 10px auto; } .filewrap{ display: flex; flex-flow: row wrap; margin: 0 -10px; } .filewrap>div{ width: 33.33%; text-align: center; padding: 10px; box-sizing: border-box; position: relative; } .filewrap .box{ width: 280px; height: 280px; line-height: 280px; background-color: #f2f2f2; border: 1px dashed #ccc; cursor: pointer; } .filewrap .box canvas{ max-width: 280px; } .filewrap p{ position: absolute; left: 0; text-align: center; width: 100%; top: 50%; margin-top: -0.5em; line-height: 2; } .filewrap .box:hover p{ display: none; } </style> </head> <body> <div id="dragfile">拖拽文件到这里</div> <div class="filecontainer"> <div class="filewrap"> <div> <div class="box"> <canvas id="canvas1"></canvas> <p>1024*1024px</p> </div> </div> <div> <div class="box"> <canvas id="canvas2"></canvas> <p>58*58px</p> </div> </div> <div> <div class="box"> <canvas id="canvas3"></canvas> <p>87*87px</p> </div> </div> <div> <div class="box"> <canvas id="canvas4"></canvas> <p>40*40px</p> </div> </div> <div> <div class="box"> <canvas id="canvas5"></canvas> <p>80*80px</p> </div> </div> <div> <div class="box"> <canvas id="canvas6"></canvas> <p>120*120px</p> </div> </div> <div> <div class="box"> <canvas id="canvas7"></canvas> <p>60*60px</p> </div> </div> <div> <div class="box"> <canvas id="canvas8"></canvas> <p>180*180px</p> </div> </div> </div> </div> <script type="text/javascript" > var fileBox = document.getElementById('dragfile'); fileBox.addEventListener('dragover', function (ev) { ev.preventDefault(); }, false); fileBox.addEventListener('drop', function (ev) { ev.preventDefault(); var reader = new FileReader(); reader.onload = function (e) { var data = e.target.result; if (data.substring(0, 10) === 'data:image') { console.log(data); var img = new Image(); img.onload =function (e) { if (img.width >= 1024 && img.height >= 1024) { generateImages(img); fileBox.innerHTML = ''; fileBox.appendChild(img); } }; img.src = data; } }; reader.onerror = function (e) { console.log('FileReader error:', e.target.error.message); }; reader.readAsDataURL(ev.dataTransfer.files[0]); }, false); function generateImages(image) { var canvas, ctx, canvasSize, remark; for (var i = 1; i <= 8; i++) { canvas = document.getElementById('canvas' + i); remark = canvas.parentNode.querySelector('p'); canvasSize = parseInt(remark.innerHTML.replace(/^\D*(\d+)\*.+$/,'$1')); canvas.width = canvasSize; canvas.height = canvasSize; ctx = canvas.getContext('2d'); ctx.drawImage(image, 0, 0, canvasSize, canvasSize); } } </script> </body> </html>
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