scratchfoundation/paper.js
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Improve versioning of _globalMatrix

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This commit is contained in:
Jürg Lehni 2013-12-09 07:51:28 +01:00
parent 663836ae41
commit 2cd3de8188
3 changed files with 23 additions and 18 deletions
src/project
Project.js

14
src/project/Project.js
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@ -59,8 +59,8 @@ var Project = PaperScopeItem.extend(/** @lends Project# */{
this.view = view instanceof View ? view : View.create(view);
this._selectedItems = {};
this._selectedItemCount = 0;
// See Item#draw() for an explanation of _updateCount
this._updateCount = 0;
// See Item#draw() for an explanation of _updateVersion
this._updateVersion = 0;
// Change tracking, not in use for now. Activate once required:
// this._changes = [];
// this._changesById = {};
@ -421,9 +421,9 @@ var Project = PaperScopeItem.extend(/** @lends Project# */{
*/
draw: function(ctx, matrix, ratio) {
// Increase the _updateCount before the draw-loop. After that, items
// that are visible will have their _updateCount set to the new value.
this._updateCount++;
// Increase the _updateVersion before the draw-loop. After that, items
// that are visible will have their _updateVersion set to the new value.
this._updateVersion++;
ctx.save();
matrix.applyToContext(ctx);
// Use new Base() so we can use param.extend() to easily override
@ -450,7 +450,7 @@ var Project = PaperScopeItem.extend(/** @lends Project# */{
ctx.strokeWidth = 1;
for (var id in this._selectedItems) {
var item = this._selectedItems[id];
if (item._updateCount === this._updateCount
if (item._updateVersion === this._updateVersion
&& (item._drawSelected || item._boundsSelected)) {
// Allow definition of selected color on a per item and per
// layer level, with a fallback to #009dec
@ -464,7 +464,7 @@ var Project = PaperScopeItem.extend(/** @lends Project# */{
if (item._boundsSelected) {
// We need to call the internal _getBounds, to get non-
// transformed bounds.
// TODO: Implement caching for these too!
// TODO: Implement caching for these too?
var coords = mx._transformCorners(
item._getBounds('getBounds'));
// Now draw a rectangle that connects the transformed