flutter_flutter/flow/layers/transform_layer.cc
2016-01-30 23:35:22 -08:00

30 lines
768 B
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/transform_layer.h"
namespace flow {
TransformLayer::TransformLayer() {
}
TransformLayer::~TransformLayer() {
}
void TransformLayer::Preroll(PrerollContext* context, const SkMatrix& matrix) {
SkMatrix childMatrix;
childMatrix.setConcat(matrix, transform_);
PrerollChildren(context, childMatrix);
transform_.mapRect(&context->child_paint_bounds);
}
void TransformLayer::Paint(PaintContext::ScopedFrame& frame) {
SkCanvas& canvas = frame.canvas();
SkAutoCanvasRestore save(&canvas, true);
canvas.concat(transform_);
PaintChildren(frame);
}
} // namespace flow