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Diffstat (limited to '')
-rw-r--r-- | third_party/webkit/PerformanceTests/MotionMark/tests/master/resources/canvas-stage.js | 52 |
1 files changed, 52 insertions, 0 deletions
diff --git a/third_party/webkit/PerformanceTests/MotionMark/tests/master/resources/canvas-stage.js b/third_party/webkit/PerformanceTests/MotionMark/tests/master/resources/canvas-stage.js new file mode 100644 index 0000000000..22002eccd6 --- /dev/null +++ b/third_party/webkit/PerformanceTests/MotionMark/tests/master/resources/canvas-stage.js @@ -0,0 +1,52 @@ +SimpleCanvasStage = Utilities.createSubclass(Stage, + function(canvasObject) + { + Stage.call(this); + this._canvasObject = canvasObject; + this.objects = []; + this.offsetIndex = 0; + }, { + + initialize: function(benchmark, options) + { + Stage.prototype.initialize.call(this, benchmark, options); + this.context = this.element.getContext("2d"); + }, + + tune: function(count) + { + if (count == 0) + return; + + if (count < 0) { + this.offsetIndex = Math.min(this.offsetIndex - count, this.objects.length); + return; + } + + var newIndex = this.offsetIndex - count; + if (newIndex < 0) { + this.offsetIndex = 0; + newIndex = -newIndex; + for (var i = 0; i < newIndex; ++i) { + if (this._canvasObject.constructor === Array) + this.objects.push(new (Stage.randomElementInArray(this._canvasObject))(this)); + else + this.objects.push(new this._canvasObject(this)); + } + } else + this.offsetIndex = newIndex; + }, + + animate: function() + { + var context = this.context; + context.clearRect(0, 0, this.size.x, this.size.y); + for (var i = this.offsetIndex, length = this.objects.length; i < length; ++i) + this.objects[i].draw(context); + }, + + complexity: function() + { + return this.objects.length - this.offsetIndex; + } +}); |