fabric-pure-browser
Version:
Fabric.js package with no node-specific dependencies (node-canvas, jsdom). The project is published once a day (in case if a new version appears) from 'master' branch of https://github.com/fabricjs/fabric.js repository. You can keep original imports in
62 lines (51 loc) • 1.63 kB
JavaScript
/**
* PatternBrush class
* @class fabric.PatternBrush
* @extends fabric.BaseBrush
*/
fabric.PatternBrush = fabric.util.createClass(fabric.PencilBrush, /** @lends fabric.PatternBrush.prototype */ {
getPatternSrc: function() {
var dotWidth = 20,
dotDistance = 5,
patternCanvas = fabric.util.createCanvasElement(),
patternCtx = patternCanvas.getContext('2d');
patternCanvas.width = patternCanvas.height = dotWidth + dotDistance;
patternCtx.fillStyle = this.color;
patternCtx.beginPath();
patternCtx.arc(dotWidth / 2, dotWidth / 2, dotWidth / 2, 0, Math.PI * 2, false);
patternCtx.closePath();
patternCtx.fill();
return patternCanvas;
},
getPatternSrcFunction: function() {
return String(this.getPatternSrc).replace('this.color', '"' + this.color + '"');
},
/**
* Creates "pattern" instance property
* @param {CanvasRenderingContext2D} ctx
*/
getPattern: function(ctx) {
return ctx.createPattern(this.source || this.getPatternSrc(), 'repeat');
},
/**
* Sets brush styles
* @param {CanvasRenderingContext2D} ctx
*/
_setBrushStyles: function(ctx) {
this.callSuper('_setBrushStyles', ctx);
ctx.strokeStyle = this.getPattern(ctx);
},
/**
* Creates path
*/
createPath: function(pathData) {
var path = this.callSuper('createPath', pathData),
topLeft = path._getLeftTopCoords().scalarAdd(path.strokeWidth / 2);
path.stroke = new fabric.Pattern({
source: this.source || this.getPatternSrcFunction(),
offsetX: -topLeft.x,
offsetY: -topLeft.y
});
return path;
}
});