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Merge pull request #17 from fsih/rasterizeOptions

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Allow user to set bounds in Item.rasterize
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DD Liu 2018-08-06 17:16:17 -04:00 committed by GitHub
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1 changed files with 5 additions and 2 deletions
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src/item/Item.js
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@ -1666,6 +1666,8 @@ new function() { // Injection scope for various item event handlers
* @param {Boolean} [insert=true] specifies whether the raster should be * @param {Boolean} [insert=true] specifies whether the raster should be
* inserted into the scene graph. When set to `true`, it is inserted * inserted into the scene graph. When set to `true`, it is inserted
* above the original * above the original
* @param {Rectangle} [boundRect] bounds within which to rasterize. Defaults
* to stroke bounds.
* @return {Raster} the newly created raster item * @return {Raster} the newly created raster item
* *
* @example {@paperscript} * @example {@paperscript}
@ -1686,9 +1688,9 @@ new function() { // Injection scope for various item event handlers
* circle.scale(5); * circle.scale(5);
* raster.scale(5); * raster.scale(5);
*/ */
rasterize: function(resolution, insert) { rasterize: function(resolution, insert, boundRect) {
// TODO: Switch to options object for more descriptive call signature. // TODO: Switch to options object for more descriptive call signature.
var bounds = this.getStrokeBounds(), var bounds = boundRect ? boundRect : this.getStrokeBounds(),
scale = (resolution || this.getView().getResolution()) / 72, scale = (resolution || this.getView().getResolution()) / 72,
// Floor top-left corner and ceil bottom-right corner, to never // Floor top-left corner and ceil bottom-right corner, to never
// blur or cut pixels. // blur or cut pixels.
@ -1700,6 +1702,7 @@ new function() { // Injection scope for various item event handlers
var canvas = CanvasProvider.getCanvas(size.multiply(scale)), var canvas = CanvasProvider.getCanvas(size.multiply(scale)),
ctx = canvas.getContext('2d'), ctx = canvas.getContext('2d'),
matrix = new Matrix().scale(scale).translate(topLeft.negate()); matrix = new Matrix().scale(scale).translate(topLeft.negate());
ctx.imageSmoothingEnabled = false;
ctx.save(); ctx.save();
matrix.applyToContext(ctx); matrix.applyToContext(ctx);
// See Project#draw() for an explanation of new Base() // See Project#draw() for an explanation of new Base()