scratchfoundation/paper.js
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Reformat code and add comment about clearRect dimensions.

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This commit is contained in:
Jürg Lehni 2011-03-02 16:07:44 +00:00
parent f9346a3b7a
commit 5d680b1987
1 changed files with 3 additions and 1 deletions
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4
src/util/CanvasProvider.js
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@ -10,11 +10,13 @@ CanvasProvider = {
var canvas = this.canvases.pop(); var canvas = this.canvases.pop();
// If they are not the same size, we don't need to clear them // If they are not the same size, we don't need to clear them
// using clearRect and visa versa. // using clearRect and visa versa.
if ((canvas.width != size.width) || (canvas.height != size.height)) { if ((canvas.width != size.width)
|| (canvas.height != size.height)) {
canvas.width = size.width; canvas.width = size.width;
canvas.height = size.height; canvas.height = size.height;
} else { } else {
var context = canvas.getContext('2d'); var context = canvas.getContext('2d');
// +1 is needed on some browsers to really clear the borders
context.clearRect(0, 0, size.width + 1, size.height + 1); context.clearRect(0, 0, size.width + 1, size.height + 1);
} }
return canvas; return canvas;