Created
November 13, 2019 17:00
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| <!DOCTYPE html> | |
| <html lang="en"> | |
| <head> | |
| <meta charset="UTF-8" /> | |
| <meta name="viewport" content="width=device-width, initial-scale=1.0" /> | |
| <meta http-equiv="X-UA-Compatible" content="ie=edge" /> | |
| <title>Document</title> | |
| </head> | |
| <body> | |
| <canvas id="canvas"></canvas> | |
| <div id="result"></div> | |
| <?php | |
| $img_base64 = "data:image/jpeg;base64," . base64_encode(file_get_contents('https://www.nabeen.be/authors/admin/avatar_hu98e5db809a8a89fe276a87e5cfbe8704_121675_250x250_fill_q90_lanczos_center.jpg')); | |
| ?> | |
| </body> | |
| <script> | |
| const canvas = document.getElementById('canvas'); | |
| const canvasWidth = 400; | |
| const canvasHeight = 300; | |
| // Canvasの準備 | |
| canvas.width = canvasWidth; | |
| canvas.height = canvasHeight; | |
| const ctx = canvas.getContext('2d'); | |
| // Canvas上に画像を表示 | |
| const img = new Image(); | |
| img.src = <?php echo "'" . $img_base64 . "'"; ?>; | |
| img.onload = function() { | |
| ctx.drawImage( | |
| img, | |
| 0, | |
| 0, | |
| canvasWidth, | |
| this.height * (canvasWidth / this.width) | |
| ); | |
| const data = canvas.toDataURL(); | |
| const dlLink = document.createElement('a'); | |
| dlLink.href = data; | |
| dlLink.download = 'download.png'; | |
| dlLink.innerText = 'DOWNLOAD'; | |
| document.getElementById('result').appendChild(dlLink); | |
| }; | |
| </script> | |
| </html> |
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