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added rounded corners to Rect

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This commit is contained in:
Lewis Peckover 2012-04-19 23:27:04 +01:00
parent 78e4022126
commit d3eac4d5f9
1 changed files with 31 additions and 2 deletions
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33
src/shapes/Rect.js
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@ -14,6 +14,7 @@ Kinetic.Rect = function(config) {
}
this.attrs.width = 0;
this.attrs.height = 0;
this.attrs.cornerRadius = 0;
this.shapeType = "Rect";
@ -21,7 +22,22 @@ Kinetic.Rect = function(config) {
var context = this.getContext();
context.beginPath();
this.applyLineJoin();
context.rect(0, 0, this.attrs.width, this.attrs.height);
if (this.attrs.cornerRadius === 0) {
// simple rect - don't bother doing all that complicated maths stuff.
context.rect(0, 0, this.attrs.width, this.attrs.height);
}
else {
// arcTo would be nicer, but browser support is patchy (Opera)
context.moveTo(this.attrs.cornerRadius, 0);
context.lineTo(this.attrs.width - this.attrs.cornerRadius, 0);
context.arc(this.attrs.width - this.attrs.cornerRadius, this.attrs.cornerRadius, this.attrs.cornerRadius, Math.PI*3/2, 0, false);
context.lineTo(this.attrs.width, this.attrs.height - this.attrs.cornerRadius);
context.arc(this.attrs.width - this.attrs.cornerRadius, this.attrs.height - this.attrs.cornerRadius, this.attrs.cornerRadius, 0, Math.PI/2, false);
context.lineTo(this.attrs.cornerRadius, this.attrs.height);
context.arc(this.attrs.cornerRadius, this.attrs.height - this.attrs.cornerRadius, this.attrs.cornerRadius, Math.PI/2, Math.PI, false);
context.lineTo(0, this.attrs.cornerRadius);
context.arc(this.attrs.cornerRadius, this.attrs.cornerRadius, this.attrs.cornerRadius, Math.PI, Math.PI*3/2, false);
}
context.closePath();
this.fillStroke();
};
@ -75,7 +91,20 @@ Kinetic.Rect.prototype = {
width: this.attrs.width,
height: this.attrs.height
};
}
},
/**
* set corner radius
* @param {Number} radius
*/
setCornerRadius: function(radius) {
this.attrs.cornerRadius = radius;
},
/**
* get corner radius
*/
getCornerRadius: function() {
return this.attrs.cornerRadius;
},
};
// extend Shape