src/cc/debug/debug_rect_history.cc

   1 // Copyright 2012 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/debug/debug_rect_history.h"
   6
   7 #include "cc/base/math_util.h"
   8 #include "cc/layers/layer_impl.h"
   9 #include "cc/layers/render_surface_impl.h"
  10 #include "cc/trees/damage_tracker.h"
  11 #include "cc/trees/layer_tree_host.h"
  12 #include "cc/trees/layer_tree_host_common.h"
  13
  14 namespace cc {
  15
  16 // static
  17 scoped_ptr<DebugRectHistory> DebugRectHistory::Create() {
  18   return make_scoped_ptr(new DebugRectHistory());
  19 }
  20
  21 DebugRectHistory::DebugRectHistory() {}
  22
  23 DebugRectHistory::~DebugRectHistory() {}
  24
  25 void DebugRectHistory::SaveDebugRectsForCurrentFrame(
  26     LayerImpl* root_layer,
  27     const LayerImplList& render_surface_layer_list,
  28     const std::vector<gfx::Rect>& occluding_screen_space_rects,
  29     const std::vector<gfx::Rect>& non_occluding_screen_space_rects,
  30     const LayerTreeDebugState& debug_state) {
  31   // For now, clear all rects from previous frames. In the future we may want to
  32   // store all debug rects for a history of many frames.
  33   debug_rects_.clear();
  34
  35   if (debug_state.show_touch_event_handler_rects)
  36     SaveTouchEventHandlerRects(root_layer);
  37
  38   if (debug_state.show_wheel_event_handler_rects)
  39     SaveWheelEventHandlerRects(root_layer);
  40
  41   if (debug_state.show_non_fast_scrollable_rects)
  42     SaveNonFastScrollableRects(root_layer);
  43
  44   if (debug_state.show_paint_rects)
  45     SavePaintRects(root_layer);
  46
  47   if (debug_state.show_property_changed_rects)
  48     SavePropertyChangedRects(render_surface_layer_list);
  49
  50   if (debug_state.show_surface_damage_rects)
  51     SaveSurfaceDamageRects(render_surface_layer_list);
  52
  53   if (debug_state.show_screen_space_rects)
  54     SaveScreenSpaceRects(render_surface_layer_list);
  55
  56   if (debug_state.show_occluding_rects)
  57     SaveOccludingRects(occluding_screen_space_rects);
  58
  59   if (debug_state.show_non_occluding_rects)
  60     SaveNonOccludingRects(non_occluding_screen_space_rects);
  61 }
  62
  63 void DebugRectHistory::SavePaintRects(LayerImpl* layer) {
  64   // We would like to visualize where any layer's paint rect (update rect) has
  65   // changed, regardless of whether this layer is skipped for actual drawing or
  66   // not. Therefore we traverse recursively over all layers, not just the render
  67   // surface list.
  68
  69   if (!layer->update_rect().IsEmpty() && layer->DrawsContent()) {
  70     float width_scale = layer->content_bounds().width() /
  71                         static_cast<float>(layer->bounds().width());
  72     float height_scale = layer->content_bounds().height() /
  73                          static_cast<float>(layer->bounds().height());
  74     gfx::RectF update_content_rect =
  75         gfx::ScaleRect(layer->update_rect(), width_scale, height_scale);
  76     debug_rects_.push_back(
  77         DebugRect(PAINT_RECT_TYPE,
  78                   MathUtil::MapClippedRect(layer->screen_space_transform(),
  79                                            update_content_rect)));
  80   }
  81
  82   for (unsigned i = 0; i < layer->children().size(); ++i)
  83     SavePaintRects(layer->children()[i]);
  84 }
  85
  86 void DebugRectHistory::SavePropertyChangedRects(
  87     const LayerImplList& render_surface_layer_list) {
  88   for (int surface_index = render_surface_layer_list.size() - 1;
  89        surface_index >= 0;
  90        --surface_index) {
  91     LayerImpl* render_surface_layer = render_surface_layer_list[surface_index];
  92     RenderSurfaceImpl* render_surface = render_surface_layer->render_surface();
  93     DCHECK(render_surface);
  94
  95     const LayerImplList& layer_list = render_surface->layer_list();
  96     for (unsigned layer_index = 0;
  97          layer_index < layer_list.size();
  98          ++layer_index) {
  99       LayerImpl* layer = layer_list[layer_index];
 100
 101       if (LayerTreeHostCommon::RenderSurfaceContributesToTarget<LayerImpl>(
 102               layer, render_surface_layer->id()))
 103         continue;
 104
 105       if (layer->LayerIsAlwaysDamaged())
 106         continue;
 107
 108       if (layer->LayerPropertyChanged()) {
 109         debug_rects_.push_back(
 110             DebugRect(PROPERTY_CHANGED_RECT_TYPE,
 111                       MathUtil::MapClippedRect(
 112                           layer->screen_space_transform(),
 113                           gfx::RectF(gfx::PointF(), layer->content_bounds()))));
 114       }
 115     }
 116   }
 117 }
 118
 119 void DebugRectHistory::SaveSurfaceDamageRects(
 120     const LayerImplList& render_surface_layer_list) {
 121   for (int surface_index = render_surface_layer_list.size() - 1;
 122        surface_index >= 0;
 123        --surface_index) {
 124     LayerImpl* render_surface_layer = render_surface_layer_list[surface_index];
 125     RenderSurfaceImpl* render_surface = render_surface_layer->render_surface();
 126     DCHECK(render_surface);
 127
 128     debug_rects_.push_back(DebugRect(
 129         SURFACE_DAMAGE_RECT_TYPE,
 130         MathUtil::MapClippedRect(
 131             render_surface->screen_space_transform(),
 132             render_surface->damage_tracker()->current_damage_rect())));
 133   }
 134 }
 135
 136 void DebugRectHistory::SaveScreenSpaceRects(
 137     const LayerImplList& render_surface_layer_list) {
 138   for (int surface_index = render_surface_layer_list.size() - 1;
 139        surface_index >= 0;
 140        --surface_index) {
 141     LayerImpl* render_surface_layer = render_surface_layer_list[surface_index];
 142     RenderSurfaceImpl* render_surface = render_surface_layer->render_surface();
 143     DCHECK(render_surface);
 144
 145     debug_rects_.push_back(DebugRect(
 146         SCREEN_SPACE_RECT_TYPE,
 147         MathUtil::MapClippedRect(render_surface->screen_space_transform(),
 148                                  render_surface->content_rect())));
 149
 150     if (render_surface_layer->replica_layer()) {
 151       debug_rects_.push_back(
 152           DebugRect(REPLICA_SCREEN_SPACE_RECT_TYPE,
 153                     MathUtil::MapClippedRect(
 154                         render_surface->replica_screen_space_transform(),
 155                         render_surface->content_rect())));
 156     }
 157   }
 158 }
 159
 160 void DebugRectHistory::SaveOccludingRects(
 161     const std::vector<gfx::Rect>& occluding_rects) {
 162   for (size_t i = 0; i < occluding_rects.size(); ++i)
 163     debug_rects_.push_back(DebugRect(OCCLUDING_RECT_TYPE, occluding_rects[i]));
 164 }
 165
 166 void DebugRectHistory::SaveNonOccludingRects(
 167     const std::vector<gfx::Rect>& non_occluding_rects) {
 168   for (size_t i = 0; i < non_occluding_rects.size(); ++i) {
 169     debug_rects_.push_back(
 170         DebugRect(NONOCCLUDING_RECT_TYPE, non_occluding_rects[i]));
 171   }
 172 }
 173
 174 void DebugRectHistory::SaveTouchEventHandlerRects(LayerImpl* layer) {
 175   LayerTreeHostCommon::CallFunctionForSubtree<LayerImpl>(
 176       layer,
 177       base::Bind(&DebugRectHistory::SaveTouchEventHandlerRectsCallback,
 178                  base::Unretained(this)));
 179 }
 180
 181 void DebugRectHistory::SaveTouchEventHandlerRectsCallback(LayerImpl* layer) {
 182   for (Region::Iterator iter(layer->touch_event_handler_region());
 183        iter.has_rect();
 184        iter.next()) {
 185     gfx::RectF touch_rect = gfx::ScaleRect(iter.rect(),
 186                                            layer->contents_scale_x(),
 187                                            layer->contents_scale_y());
 188     debug_rects_.push_back(DebugRect(TOUCH_EVENT_HANDLER_RECT_TYPE,
 189                                      MathUtil::MapClippedRect(
 190                                          layer->screen_space_transform(),
 191                                          touch_rect)));
 192   }
 193 }
 194
 195 void DebugRectHistory::SaveWheelEventHandlerRects(LayerImpl* layer) {
 196   LayerTreeHostCommon::CallFunctionForSubtree<LayerImpl>(
 197       layer,
 198       base::Bind(&DebugRectHistory::SaveWheelEventHandlerRectsCallback,
 199                  base::Unretained(this)));
 200 }
 201
 202 void DebugRectHistory::SaveWheelEventHandlerRectsCallback(LayerImpl* layer) {
 203   if (!layer->have_wheel_event_handlers())
 204     return;
 205
 206   gfx::RectF wheel_rect = gfx::RectF(layer->content_bounds());
 207   wheel_rect.Scale(layer->contents_scale_x(), layer->contents_scale_y());
 208   debug_rects_.push_back(DebugRect(WHEEL_EVENT_HANDLER_RECT_TYPE,
 209                                    MathUtil::MapClippedRect(
 210                                        layer->screen_space_transform(),
 211                                        wheel_rect)));
 212 }
 213
 214 void DebugRectHistory::SaveNonFastScrollableRects(LayerImpl* layer) {
 215   LayerTreeHostCommon::CallFunctionForSubtree<LayerImpl>(
 216       layer,
 217       base::Bind(&DebugRectHistory::SaveNonFastScrollableRectsCallback,
 218                  base::Unretained(this)));
 219 }
 220
 221 void DebugRectHistory::SaveNonFastScrollableRectsCallback(LayerImpl* layer) {
 222   for (Region::Iterator iter(layer->non_fast_scrollable_region());
 223        iter.has_rect();
 224        iter.next()) {
 225     gfx::RectF scroll_rect = gfx::ScaleRect(iter.rect(),
 226                                             layer->contents_scale_x(),
 227                                             layer->contents_scale_y());
 228     debug_rects_.push_back(DebugRect(NON_FAST_SCROLLABLE_RECT_TYPE,
 229                                      MathUtil::MapClippedRect(
 230                                          layer->screen_space_transform(),
 231                                          scroll_rect)));
 232   }
 233 }
 234
 235 }  // namespace cc