cc/trees/draw_property_utils.h

   1 // Copyright 2014 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 #ifndef CC_TREES_DRAW_PROPERTY_UTILS_H_
   6 #define CC_TREES_DRAW_PROPERTY_UTILS_H_
   7
   8 #include "cc/base/cc_export.h"
   9 #include "cc/layers/layer_lists.h"
  10
  11 namespace gfx {
  12 class Rect;
  13 class Transform;
  14 }  // namespace gfx
  15
  16 namespace cc {
  17
  18 class ClipTree;
  19 class Layer;
  20 class LayerImpl;
  21 class OpacityTree;
  22 class TransformTree;
  23 class PropertyTrees;
  24
  25 // Computes combined clips for every node in |clip_tree|. This function requires
  26 // that |transform_tree| has been updated via |ComputeTransforms|.
  27 // TODO(vollick): ComputeClips and ComputeTransforms will eventually need to be
  28 // done on both threads.
  29 void CC_EXPORT
  30 ComputeClips(ClipTree* clip_tree, const TransformTree& transform_tree);
  31
  32 // Computes combined (screen space) transforms for every node in the transform
  33 // tree. This must be done prior to calling |ComputeClips|.
  34 void CC_EXPORT ComputeTransforms(TransformTree* transform_tree);
  35
  36 // Computes screen space opacity for every node in the opacity tree.
  37 void CC_EXPORT ComputeOpacities(OpacityTree* opacity_tree);
  38
  39 // Computes the visible content rect for every layer under |root_layer|. The
  40 // visible content rect is the clipped content space rect that will be used for
  41 // recording.
  42 void CC_EXPORT BuildPropertyTreesAndComputeVisibleRects(
  43     Layer* root_layer,
  44     const Layer* page_scale_layer,
  45     const Layer* inner_viewport_scroll_layer,
  46     const Layer* outer_viewport_scroll_layer,
  47     float page_scale_factor,
  48     float device_scale_factor,
  49     const gfx::Rect& viewport,
  50     const gfx::Transform& device_transform,
  51     PropertyTrees* property_trees,
  52     LayerList* update_layer_list);
  53
  54 void CC_EXPORT BuildPropertyTreesAndComputeVisibleRects(
  55     LayerImpl* root_layer,
  56     const LayerImpl* page_scale_layer,
  57     const LayerImpl* inner_viewport_scroll_layer,
  58     const LayerImpl* outer_viewport_scroll_layer,
  59     float page_scale_factor,
  60     float device_scale_factor,
  61     const gfx::Rect& viewport,
  62     const gfx::Transform& device_transform,
  63     PropertyTrees* property_trees,
  64     LayerImplList* update_layer_list);
  65
  66 void CC_EXPORT
  67 ComputeVisibleRectsUsingPropertyTrees(Layer* root_layer,
  68                                       PropertyTrees* property_trees,
  69                                       LayerList* update_layer_list);
  70
  71 void CC_EXPORT
  72 ComputeVisibleRectsUsingPropertyTrees(LayerImpl* root_layer,
  73                                       PropertyTrees* property_trees,
  74                                       LayerImplList* update_layer_list);
  75
  76 gfx::Transform CC_EXPORT
  77 DrawTransformFromPropertyTrees(const Layer* layer, const TransformTree& tree);
  78
  79 gfx::Transform CC_EXPORT
  80 DrawTransformFromPropertyTrees(const LayerImpl* layer,
  81                                const TransformTree& tree);
  82
  83 gfx::Transform CC_EXPORT
  84 ScreenSpaceTransformFromPropertyTrees(const Layer* layer,
  85                                       const TransformTree& tree);
  86
  87 gfx::Transform CC_EXPORT
  88 ScreenSpaceTransformFromPropertyTrees(const LayerImpl* layer,
  89                                       const TransformTree& tree);
  90
  91 float CC_EXPORT
  92 DrawOpacityFromPropertyTrees(const Layer* layer, const OpacityTree& tree);
  93
  94 float CC_EXPORT
  95 DrawOpacityFromPropertyTrees(const LayerImpl* layer, const OpacityTree& tree);
  96
  97 bool CC_EXPORT
  98 CanUseLcdTextFromPropertyTrees(const LayerImpl* layer,
  99                                bool layers_always_allowed_lcd_text,
 100                                bool can_use_lcd_text,
 101                                PropertyTrees* property_trees);
 102
 103 }  // namespace cc
 104
 105 #endif  // CC_TREES_DRAW_PROPERTY_UTILS_H_