如何修复 HTML5画布中的模糊文本？
我是一个总 不行与 HTML5和我的工作与 canvas呈现形状，颜色和文字。在我的应用程序中，我有一个 视图适配器视图适配器动态创建一个画布，并填充它的内容。除了我的文本被渲染得非常模糊/模糊/拉伸之外，这个工具非常好用。关于为什么在 CSS中定义 宽度和 身高会导致这个问题，我已经看到了很多其他的帖子，但是我在 javascript中定义了所有这些。
相关代码(查看 小提琴) :
var width = 500;//FIXME:size.w;
var height = 500;//FIXME:size.h;
var canvas = document.createElement("canvas");
//canvas.className="singleUserCanvas";
canvas.width=width;
canvas.height=height;
canvas.border = "3px solid #999999";
canvas.bgcolor = "#999999";
canvas.margin = "(0, 2%, 0, 2%)";
var context = canvas.getContext("2d");
//////////////////
//// SHAPES ////
//////////////////
var left = 0;
//draw zone 1 rect
context.fillStyle = "#8bacbe";
context.fillRect(0, (canvas.height*5/6)+1, canvas.width*1.5/8.5, canvas.height*1/6);
left = left + canvas.width*1.5/8.5;
//draw zone 2 rect
context.fillStyle = "#ffe381";
context.fillRect(left+1, (canvas.height*5/6)+1, canvas.width*2.75/8.5, canvas.height*1/6);
left = left + canvas.width*2.75/8.5 + 1;
//draw zone 3 rect
context.fillStyle = "#fbbd36";
context.fillRect(left+1, (canvas.height*5/6)+1, canvas.width*1.25/8.5, canvas.height*1/6);
left = left + canvas.width*1.25/8.5;
//draw target zone rect
context.fillStyle = "#004880";
context.fillRect(left+1, (canvas.height*5/6)+1, canvas.width*0.25/8.5, canvas.height*1/6);
left = left + canvas.width*0.25/8.5;
//draw zone 4 rect
context.fillStyle = "#f8961d";
context.fillRect(left+1, (canvas.height*5/6)+1, canvas.width*1.25/8.5, canvas.height*1/6);
left = left + canvas.width*1.25/8.5 + 1;
//draw zone 5 rect
context.fillStyle = "#8a1002";
context.fillRect(left+1, (canvas.height*5/6)+1, canvas.width-left, canvas.height*1/6);
////////////////
//// TEXT ////
////////////////
//user name
context.fillStyle = "black";
context.font = "bold 18px sans-serif";
context.textAlign = 'right';
context.fillText("User Name", canvas.width, canvas.height*.05);
//AT:
context.font = "bold 12px sans-serif";
context.fillText("AT: 140", canvas.width, canvas.height*.1);
//AB:
context.fillText("AB: 94", canvas.width, canvas.height*.15);
//this part is done after the callback from the view adapter, but is relevant here to add the view back into the layout.
var parent = document.getElementById("layout-content");
parent.appendChild(canvas);<div id="layout-content"></div>The results I am seeing (in Safari) are much more skewed than shown in the Fiddle:
Mine
Fiddle
What am I doing incorrectly? Do I need a separate canvas for each text element? Is it the font? Am I required to first define the canvas in the HTML5 layout? Is there a typo? I am lost.
最佳答案