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ADDED - scale parameter to options

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This commit is contained in:
Gabriel Lesperance 2012-10-17 18:26:03 -04:00
parent 81ae37cbd1
commit 39caad7b7a
1 changed files with 18 additions and 5 deletions
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23
src/renderers/Canvas.js
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@ -97,12 +97,25 @@ _html2canvas.Renderer.Canvas = function( options ) {
renderItem,
testctx = ( hasCTX ) ? testCanvas.getContext("2d") : {},
safeImages = [],
fstyle;
fstyle,
scaleX = 1,
scaleY = 1;
canvas.width = canvas.style.width = (!usingFlashcanvas) ? options.width || zStack.ctx.width : Math.min(flashMaxSize, (options.width || zStack.ctx.width) );
canvas.height = canvas.style.height = (!usingFlashcanvas) ? options.height || zStack.ctx.height : Math.min(flashMaxSize, (options.height || zStack.ctx.height) );
fstyle = ctx.fillStyle;
if (options.scale) {
if (!isNaN(options.scale))
scaleX = scaleY = options.scale;
else {
scaleX = options.scale.x;
scaleY = options.scale.y;
}
ctx.scale(scaleX, scaleY);
}
ctx.fillStyle = zStack.backgroundColor;
ctx.fillRect(0, 0, canvas.width, canvas.height);
ctx.fillStyle = fstyle;
@ -211,11 +224,11 @@ _html2canvas.Renderer.Canvas = function( options ) {
// crop image to the bounds of selected (single) element
bounds = _html2canvas.Util.Bounds( options.elements[ 0 ] );
newCanvas = doc.createElement('canvas');
newCanvas.width = bounds.width;
newCanvas.height = bounds.height;
ctx = newCanvas.getContext("2d");
newCanvas.width = bounds.width * scaleX;
newCanvas.height = bounds.height * scaleY;
ctx.drawImage( canvas, bounds.left, bounds.top, bounds.width, bounds.height, 0, 0, bounds.width, bounds.height );
ctx = newCanvas.getContext("2d");
ctx.drawImage( canvas, bounds.left * scaleX, bounds.top * scaleY, bounds.width * scaleX, bounds.height * scaleY, 0, 0, bounds.width * scaleX, bounds.height * scaleY );
canvas = null;
return newCanvas;
}