flutter_flutter/flow/layers/clip_path_layer.cc
mmclenna 43c108dae8 Additional instrumentation for tracing engine performance (#2682)
* Added instrumentation for timings.

* A few more traces for better granularity.
2016-05-12 13:34:57 -07:00

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// Copyright 2015 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "flow/layers/clip_path_layer.h"
namespace flow {
ClipPathLayer::ClipPathLayer() {
}
ClipPathLayer::~ClipPathLayer() {
}
void ClipPathLayer::Preroll(PrerollContext* context, const SkMatrix& matrix) {
PrerollChildren(context, matrix);
if (!context->child_paint_bounds.intersect(clip_path_.getBounds()))
context->child_paint_bounds.setEmpty();
set_paint_bounds(context->child_paint_bounds);
}
void ClipPathLayer::Paint(PaintContext& context) {
TRACE_EVENT0("flutter", "ClipPathLayer::Paint");
SkAutoCanvasRestore save(&context.canvas, false);
context.canvas.saveLayer(&paint_bounds(), nullptr);
context.canvas.clipPath(clip_path_);
PaintChildren(context);
}
} // namespace flow