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// Copyright 2012 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.
#ifndef CC_TILES_TILE_H_
#define CC_TILES_TILE_H_
#include <stddef.h>
#include <stdint.h>
#include "base/macros.h"
#include "base/memory/ref_counted.h"
#include "cc/tiles/tile_draw_info.h"
#include "ui/gfx/geometry/rect.h"
#include "ui/gfx/geometry/size.h"
namespace cc {
class PrioritizedTile;
class TileManager;
struct TilePriority;
class CC_EXPORT Tile {
class CC_EXPORT Deleter {
void operator()(Tile* tile) const;
class CC_EXPORT CreateInfo {
int tiling_i_index;
int tiling_j_index;
gfx::Rect enclosing_layer_rect;
gfx::Rect content_rect;
float contents_scale;
CreateInfo(int tiling_i_index,
int tiling_j_index,
const gfx::Rect& enclosing_layer_rect,
const gfx::Rect& content_rect,
float contents_scale)
: tiling_i_index(tiling_i_index),
contents_scale(contents_scale) {}
enum TileRasterFlags { USE_PICTURE_ANALYSIS = 1 << 0, IS_OPAQUE = 1 << 1 };
typedef uint64_t Id;
Id id() const {
return id_;
// TODO(vmpstr): Move this to the iterators.
bool required_for_activation() const { return required_for_activation_; }
void set_required_for_activation(bool is_required) {
required_for_activation_ = is_required;
bool required_for_draw() const { return required_for_draw_; }
void set_required_for_draw(bool is_required) {
required_for_draw_ = is_required;
bool use_picture_analysis() const {
return !!(flags_ & USE_PICTURE_ANALYSIS);
bool is_opaque() const { return !!(flags_ & IS_OPAQUE); }
void AsValueInto(base::trace_event::TracedValue* value) const;
const TileDrawInfo& draw_info() const { return draw_info_; }
TileDrawInfo& draw_info() { return draw_info_; }
float contents_scale() const { return contents_scale_; }
const gfx::Rect& content_rect() const { return content_rect_; }
const gfx::Rect& enclosing_layer_rect() const {
return enclosing_layer_rect_;
int layer_id() const { return layer_id_; }
int source_frame_number() const { return source_frame_number_; }
size_t GPUMemoryUsageInBytes() const;
const gfx::Size& desired_texture_size() const { return content_rect_.size(); }
int tiling_i_index() const { return tiling_i_index_; }
int tiling_j_index() const { return tiling_j_index_; }
void SetInvalidated(const gfx::Rect& invalid_content_rect,
Id previous_tile_id) {
invalidated_content_rect_ = invalid_content_rect;
invalidated_id_ = previous_tile_id;
Id invalidated_id() const { return invalidated_id_; }
const gfx::Rect& invalidated_content_rect() const {
return invalidated_content_rect_;
bool HasRasterTask() const { return !!raster_task_.get(); }
friend class TileManager;
friend class FakeTileManager;
friend class FakePictureLayerImpl;
// Methods called by by tile manager.
Tile(TileManager* tile_manager,
const CreateInfo& info,
int layer_id,
int source_frame_number,
int flags);
TileManager* const tile_manager_;
const gfx::Rect content_rect_;
const gfx::Rect enclosing_layer_rect_;
const float contents_scale_;
TileDrawInfo draw_info_;
const int layer_id_;
const int source_frame_number_;
const int flags_;
const int tiling_i_index_;
const int tiling_j_index_;
bool required_for_activation_ : 1;
bool required_for_draw_ : 1;
Id id_;
// The rect bounding the changes in this Tile vs the previous tile it
// replaced.
gfx::Rect invalidated_content_rect_;
// The |id_| of the Tile that was invalidated and replaced by this tile.
Id invalidated_id_;
unsigned scheduled_priority_;
scoped_refptr<RasterTask> raster_task_;
using ScopedTilePtr = scoped_ptr<Tile, Tile::Deleter>;
} // namespace cc
#endif // CC_TILES_TILE_H_