Prevent stroke border from overflowing path
Question
strokeRect (0, 0, canvasWidth, canvasHeight);
draws a full rectangle but the line width is cut in half, here is an example:
<canvas></canvas>
<script>
var canvas = document.getElementsByTagName ("canvas");
var lineWidth = 10;
var canvasHeight = canvas[0].height;
var canvasWidth = canvas[0].width;
var ctx = canvas[0].getContext ("2d");
ctx.lineWidth = lineWidth;
ctx.strokeRect (0, 0, canvasWidth, canvasHeight);
</script>
I can fix that but isn't elegant:
<canvas></canvas>
<script>
var canvas = document.getElementsByTagName ("canvas");
var lineWidth = 10;
var canvasHeight = canvas[0].height - lineWidth;
var canvasWidth = canvas[0].width - lineWidth;
var ctx = canvas[0].getContext ("2d");
ctx.lineWidth = lineWidth;
lineWidth /= 2;
ctx.strokeRect (lineWidth, lineWidth, canvasWidth, canvasHeight);
</script>
Is there a native method to do that ? Something like the "box-sizing" css3 attribute:
canvas {
box-sizing: border-box;
}
Thanks.
No correct solution
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