Part 8 of cc/ directory shuffles: resources

cc/picture_layer_tiling_set.h

-// 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_PICTURE_LAYER_TILING_SET_H_
-#define CC_PICTURE_LAYER_TILING_SET_H_
-
-#include "cc/base/region.h"
-#include "cc/base/scoped_ptr_vector.h"
-#include "cc/picture_layer_tiling.h"
-#include "ui/gfx/size.h"
-
-namespace cc {
-
-class CC_EXPORT PictureLayerTilingSet {
- public:
-  explicit PictureLayerTilingSet(PictureLayerTilingClient* client);
-  ~PictureLayerTilingSet();
-
-  void SetClient(PictureLayerTilingClient* client);
-
-  // Shallow copies all data (except client and bounds from other).
-  void CloneAll(
-     const PictureLayerTilingSet& other,
-     const Region& invalidation,
-     float minimum_contents_scale);
-  void Clone(const PictureLayerTiling* tiling, const Region& invalidation);
-
-  void SetLayerBounds(gfx::Size layer_bounds);
-  gfx::Size LayerBounds() const;
-
-  PictureLayerTiling* AddTiling(float contents_scale);
-  size_t num_tilings() const { return tilings_.size(); }
-  PictureLayerTiling* tiling_at(size_t idx) { return tilings_[idx]; }
-  const PictureLayerTiling* tiling_at(size_t idx) const {
-    return tilings_[idx];
-  }
-
-  // Remove all tilings.
-  void RemoveAllTilings();
-
-  // Remove one tiling.
-  void Remove(PictureLayerTiling* tiling);
-
-  // Remove all tiles; keep all tilings.
-  void RemoveAllTiles();
-
-  // For all tilings, create any tile that intersects |layer_rect|.
-  void CreateTilesFromLayerRect(gfx::Rect layer_rect);
-
-  void UpdateTilePriorities(
-      WhichTree tree,
-      gfx::Size device_viewport,
-      gfx::Rect viewport_in_content_space,
-      gfx::Size last_layer_bounds,
-      gfx::Size current_layer_bounds,
-      float last_layer_contents_scale,
-      float current_layer_contents_scale,
-      const gfx::Transform& last_screen_transform,
-      const gfx::Transform& current_screen_transform,
-      int current_source_frame_number,
-      double current_frame_time,
-      bool store_screen_space_quads_on_tiles);
-
-  void DidBecomeActive();
-
-  // For a given rect, iterates through tiles that can fill it.  If no
-  // set of tiles with resources can fill the rect, then it will iterate
-  // through null tiles with valid geometry_rect() until the rect is full.
-  // If all tiles have resources, the union of all geometry_rects will
-  // exactly fill rect with no overlap.
-  class CC_EXPORT Iterator {
-   public:
-    Iterator(const PictureLayerTilingSet* set,
-      float contents_scale,
-      gfx::Rect content_rect,
-      float ideal_contents_scale,
-      PictureLayerTiling::LayerDeviceAlignment layerDeviceAlignment);
-    ~Iterator();
-
-    // Visible rect (no borders), always in the space of rect,
-    // regardless of the relative contents scale of the tiling.
-    gfx::Rect geometry_rect() const;
-    // Texture rect (in texels) for geometry_rect
-    gfx::RectF texture_rect() const;
-    // Texture size in texels
-    gfx::Size texture_size() const;
-
-    Tile* operator->() const;
-    Tile* operator*() const;
-
-    Iterator& operator++();
-    operator bool() const;
-
-    PictureLayerTiling* CurrentTiling();
-
-   private:
-    int NextTiling() const;
-
-    const PictureLayerTilingSet* set_;
-    float contents_scale_;
-    float ideal_contents_scale_;
-    PictureLayerTiling::LayerDeviceAlignment layer_device_alignment_;
-    PictureLayerTiling::Iterator tiling_iter_;
-    int current_tiling_;
-    int ideal_tiling_;
-
-    Region current_region_;
-    Region missing_region_;
-    Region::Iterator region_iter_;
-  };
-
-  scoped_ptr<base::Value> AsValue() const;
-
- private:
-  PictureLayerTilingClient* client_;
-  gfx::Size layer_bounds_;
-  ScopedPtrVector<PictureLayerTiling> tilings_;
-
-  friend class Iterator;
-};
-
-}  // namespace cc
-
-#endif  // CC_PICTURE_LAYER_TILING_SET_H_