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我不知道为什么在画布上的文本是模糊的,并且绘制的图像也是模糊的,这是我的示例,我如何使用图像和文本创建画布。画布文本和图像模糊
https://jsfiddle.net/jorge182/5ju5pLqb/2/
var canvas = document.getElementById('myCanvas');
var context = canvas.getContext('2d');
var imageObj = new Image();
imageObj.onload = function() {
context.save();
context.beginPath();
context.arc(25, 25, 25, 0, Math.PI * 2, true);
context.closePath();
context.clip();
context.drawImage(imageObj, 0, 0, 50, 50);
context.beginPath();
context.arc(0, 0, 25, 0, Math.PI * 2, true);
context.clip();
context.closePath();
context.restore();
context.lineWidth = 2;
context.textAlign = 'left';
context.font = '8pt Signika Negative';
context.fillStyle = 'black';
context.fillText('Jorge', 60, 15);
context.fillText(' have been here!', 60, 30);
context.font = '6pt Signika Negative';
context.textAling = 'left';
context.fillStyle = '#555';
context.fillText('Caribe Photo Weading Photograpy', 60, 40);
};
imageObj.src = 'http://www.html5canvastutorials.com/demos/assets/darth-vader.jpg'
嗯,我想使用小图片和小文本,因为我正在开发移动应用程序,我会尽量缩小图片的尺寸,并希望获得好的效果。 –