flutter_flutter/flow/layers/clip_path_layer.cc
Adam Barth b9ff394182 Break dependency from Layer to PaintContext (#2609)
Instead, make Layer::Paint take a new PaintContext that has just exactly
the state that it needs, mirroring PrerollContext. Also, rename
PaintContext to CompositorContext because it holds the context for the
whole compositor.
2016-04-21 23:05:41 -07:00

30 lines
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C++

// 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) {
SkAutoCanvasRestore save(&context.canvas, false);
context.canvas.saveLayer(&paint_bounds(), nullptr);
context.canvas.clipPath(clip_path_);
PaintChildren(context);
}
} // namespace flow