render_surface.cc revision 2a99a7e74a7f215066514fe81d2bfa6639d9eddd 
1// Copyright 2010 The Chromium Authors. All rights reserved.
2// Use of this source code is governed by a BSD-style license that can be
3// found in the LICENSE file.
4
5#include "cc/layers/render_surface.h"
6
7#include "cc/base/math_util.h"
8#include "cc/layers/layer.h"
9#include "ui/gfx/transform.h"
10
11namespace cc {
12
13RenderSurface::RenderSurface(Layer* owning_layer)
14    : owning_layer_(owning_layer),
15      draw_opacity_(1),
16      draw_opacity_is_animating_(false),
17      target_surface_transforms_are_animating_(false),
18      screen_space_transforms_are_animating_(false),
19      is_clipped_(false),
20      nearest_ancestor_that_moves_pixels_(NULL) {}
21
22RenderSurface::~RenderSurface() {}
23
24gfx::RectF RenderSurface::DrawableContentRect() const {
25  gfx::RectF drawable_content_rect =
26      MathUtil::MapClippedRect(draw_transform_, content_rect_);
27  if (owning_layer_->has_replica())
28    drawable_content_rect.Union(
29        MathUtil::MapClippedRect(replica_draw_transform_, content_rect_));
30  return drawable_content_rect;
31}
32
33}  // namespace cc
34