scratchfoundation/paper.js
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Cache strokeBounds and bounds only if no transformation matrix is passed.

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This commit is contained in:
Jürg Lehni 2011-05-05 11:21:09 +01:00
parent 32ed418bdf
commit ee6d593620
1 changed files with 9 additions and 2 deletions
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11
src/path/Path.js
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@ -1011,10 +1011,13 @@ var Path = this.Path = PathItem.extend({
* @param matrix optional
*/
getBounds: function(/* matrix */) {
var useCache = arguments.length == 0;
// Pass the matrix hidden from Bootstrap, so it still inject
// getBounds as bean too.
if (!this._bounds) {
if (!useCache || !this._bounds) {
var bounds = getBounds(this, arguments[0]);
if (!useCache)
return bounds;
this._bounds = LinkedRectangle.create(this, 'setBounds',
bounds.x, bounds.y, bounds.width, bounds.height);
}
@ -1025,6 +1028,9 @@ var Path = this.Path = PathItem.extend({
* The bounding rectangle of the item including stroke width.
*/
getStrokeBounds: function(/* matrix */) {
var useCache = arguments.length == 0;
if (this._strokeBounds && useCache)
return this._strokeBounds;
var matrix = arguments[0], // set #getBounds()
width = this.getStrokeWidth(),
radius = width / 2,
@ -1124,7 +1130,8 @@ var Path = this.Path = PathItem.extend({
addCap(segments[0], cap, 0);
addCap(segments[length - 1], cap, 1);
}
if (useCache)
this._strokeBounds = bounds;
return bounds;
},