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/layer_iterator.h"
  10 #include "cc/layers/layer_utils.h"
  11 #include "cc/layers/render_surface_impl.h"
  12 #include "cc/trees/damage_tracker.h"
  13 #include "cc/trees/layer_tree_host.h"
  14 #include "cc/trees/layer_tree_host_common.h"
  15 #include "ui/gfx/geometry/rect_conversions.h"
  16
  17 namespace cc {
  18
  19 // static
  20 scoped_ptr<DebugRectHistory> DebugRectHistory::Create() {
  21   return make_scoped_ptr(new DebugRectHistory());
  22 }
  23
  24 DebugRectHistory::DebugRectHistory() {}
  25
  26 DebugRectHistory::~DebugRectHistory() {}
  27
  28 void DebugRectHistory::SaveDebugRectsForCurrentFrame(
  29     LayerImpl* root_layer,
  30     LayerImpl* hud_layer,
  31     const LayerImplList& render_surface_layer_list,
  32     const std::vector<gfx::Rect>& occluding_screen_space_rects,
  33     const std::vector<gfx::Rect>& non_occluding_screen_space_rects,
  34     const LayerTreeDebugState& debug_state) {
  35   // For now, clear all rects from previous frames. In the future we may want to
  36   // store all debug rects for a history of many frames.
  37   debug_rects_.clear();
  38
  39   if (debug_state.show_touch_event_handler_rects)
  40     SaveTouchEventHandlerRects(root_layer);
  41
  42   if (debug_state.show_wheel_event_handler_rects)
  43     SaveWheelEventHandlerRects(root_layer);
  44
  45   if (debug_state.show_scroll_event_handler_rects)
  46     SaveScrollEventHandlerRects(root_layer);
  47
  48   if (debug_state.show_non_fast_scrollable_rects)
  49     SaveNonFastScrollableRects(root_layer);
  50
  51   if (debug_state.show_paint_rects)
  52     SavePaintRects(root_layer);
  53
  54   if (debug_state.show_property_changed_rects)
  55     SavePropertyChangedRects(render_surface_layer_list, hud_layer);
  56
  57   if (debug_state.show_surface_damage_rects)
  58     SaveSurfaceDamageRects(render_surface_layer_list);
  59
  60   if (debug_state.show_screen_space_rects)
  61     SaveScreenSpaceRects(render_surface_layer_list);
  62
  63   if (debug_state.show_occluding_rects)
  64     SaveOccludingRects(occluding_screen_space_rects);
  65
  66   if (debug_state.show_non_occluding_rects)
  67     SaveNonOccludingRects(non_occluding_screen_space_rects);
  68
  69   if (debug_state.show_layer_animation_bounds_rects)
  70     SaveLayerAnimationBoundsRects(render_surface_layer_list);
  71 }
  72
  73 void DebugRectHistory::SavePaintRects(LayerImpl* layer) {
  74   // We would like to visualize where any layer's paint rect (update rect) has
  75   // changed, regardless of whether this layer is skipped for actual drawing or
  76   // not. Therefore we traverse recursively over all layers, not just the render
  77   // surface list.
  78
  79   if (!layer->update_rect().IsEmpty() && layer->DrawsContent()) {
  80     float width_scale = layer->content_bounds().width() /
  81                         static_cast<float>(layer->bounds().width());
  82     float height_scale = layer->content_bounds().height() /
  83                          static_cast<float>(layer->bounds().height());
  84     gfx::Rect update_content_rect = gfx::ScaleToEnclosingRect(
  85         layer->update_rect(), width_scale, height_scale);
  86     debug_rects_.push_back(
  87         DebugRect(PAINT_RECT_TYPE,
  88                   MathUtil::MapEnclosingClippedRect(
  89                       layer->screen_space_transform(), update_content_rect)));
  90   }
  91
  92   for (unsigned i = 0; i < layer->children().size(); ++i)
  93     SavePaintRects(layer->children()[i]);
  94 }
  95
  96 void DebugRectHistory::SavePropertyChangedRects(
  97     const LayerImplList& render_surface_layer_list,
  98     LayerImpl* hud_layer) {
  99   for (int surface_index = render_surface_layer_list.size() - 1;
 100        surface_index >= 0;
 101        --surface_index) {
 102     LayerImpl* render_surface_layer = render_surface_layer_list[surface_index];
 103     RenderSurfaceImpl* render_surface = render_surface_layer->render_surface();
 104     DCHECK(render_surface);
 105
 106     const LayerImplList& layer_list = render_surface->layer_list();
 107     for (unsigned layer_index = 0;
 108          layer_index < layer_list.size();
 109          ++layer_index) {
 110       LayerImpl* layer = layer_list[layer_index];
 111
 112       if (LayerTreeHostCommon::RenderSurfaceContributesToTarget<LayerImpl>(
 113               layer, render_surface_layer->id()))
 114         continue;
 115
 116       if (layer == hud_layer)
 117         continue;
 118
 119       if (!layer->LayerPropertyChanged())
 120         continue;
 121
 122       debug_rects_.push_back(
 123           DebugRect(PROPERTY_CHANGED_RECT_TYPE,
 124                     MathUtil::MapEnclosingClippedRect(
 125                         layer->screen_space_transform(),
 126                         gfx::Rect(layer->content_bounds()))));
 127     }
 128   }
 129 }
 130
 131 void DebugRectHistory::SaveSurfaceDamageRects(
 132     const LayerImplList& render_surface_layer_list) {
 133   for (int surface_index = render_surface_layer_list.size() - 1;
 134        surface_index >= 0;
 135        --surface_index) {
 136     LayerImpl* render_surface_layer = render_surface_layer_list[surface_index];
 137     RenderSurfaceImpl* render_surface = render_surface_layer->render_surface();
 138     DCHECK(render_surface);
 139
 140     debug_rects_.push_back(DebugRect(
 141         SURFACE_DAMAGE_RECT_TYPE,
 142         MathUtil::MapEnclosingClippedRect(
 143             render_surface->screen_space_transform(),
 144             render_surface->damage_tracker()->current_damage_rect())));
 145   }
 146 }
 147
 148 void DebugRectHistory::SaveScreenSpaceRects(
 149     const LayerImplList& render_surface_layer_list) {
 150   for (int surface_index = render_surface_layer_list.size() - 1;
 151        surface_index >= 0;
 152        --surface_index) {
 153     LayerImpl* render_surface_layer = render_surface_layer_list[surface_index];
 154     RenderSurfaceImpl* render_surface = render_surface_layer->render_surface();
 155     DCHECK(render_surface);
 156
 157     debug_rects_.push_back(
 158         DebugRect(SCREEN_SPACE_RECT_TYPE,
 159                   MathUtil::MapEnclosingClippedRect(
 160                       render_surface->screen_space_transform(),
 161                       render_surface->content_rect())));
 162
 163     if (render_surface_layer->replica_layer()) {
 164       debug_rects_.push_back(
 165           DebugRect(REPLICA_SCREEN_SPACE_RECT_TYPE,
 166                     MathUtil::MapEnclosingClippedRect(
 167                         render_surface->replica_screen_space_transform(),
 168                         render_surface->content_rect())));
 169     }
 170   }
 171 }
 172
 173 void DebugRectHistory::SaveOccludingRects(
 174     const std::vector<gfx::Rect>& occluding_rects) {
 175   for (size_t i = 0; i < occluding_rects.size(); ++i)
 176     debug_rects_.push_back(DebugRect(OCCLUDING_RECT_TYPE, occluding_rects[i]));
 177 }
 178
 179 void DebugRectHistory::SaveNonOccludingRects(
 180     const std::vector<gfx::Rect>& non_occluding_rects) {
 181   for (size_t i = 0; i < non_occluding_rects.size(); ++i) {
 182     debug_rects_.push_back(
 183         DebugRect(NONOCCLUDING_RECT_TYPE, non_occluding_rects[i]));
 184   }
 185 }
 186
 187 void DebugRectHistory::SaveTouchEventHandlerRects(LayerImpl* layer) {
 188   LayerTreeHostCommon::CallFunctionForSubtree<LayerImpl>(
 189       layer,
 190       base::Bind(&DebugRectHistory::SaveTouchEventHandlerRectsCallback,
 191                  base::Unretained(this)));
 192 }
 193
 194 void DebugRectHistory::SaveTouchEventHandlerRectsCallback(LayerImpl* layer) {
 195   for (Region::Iterator iter(layer->touch_event_handler_region());
 196        iter.has_rect();
 197        iter.next()) {
 198     gfx::Rect touch_rect = gfx::ScaleToEnclosingRect(
 199         iter.rect(), layer->contents_scale_x(), layer->contents_scale_y());
 200     debug_rects_.push_back(
 201         DebugRect(TOUCH_EVENT_HANDLER_RECT_TYPE,
 202                   MathUtil::MapEnclosingClippedRect(
 203                       layer->screen_space_transform(), touch_rect)));
 204   }
 205 }
 206
 207 void DebugRectHistory::SaveWheelEventHandlerRects(LayerImpl* layer) {
 208   LayerTreeHostCommon::CallFunctionForSubtree<LayerImpl>(
 209       layer,
 210       base::Bind(&DebugRectHistory::SaveWheelEventHandlerRectsCallback,
 211                  base::Unretained(this)));
 212 }
 213
 214 void DebugRectHistory::SaveWheelEventHandlerRectsCallback(LayerImpl* layer) {
 215   if (!layer->have_wheel_event_handlers())
 216     return;
 217
 218   gfx::Rect wheel_rect =
 219       gfx::ScaleToEnclosingRect(gfx::Rect(layer->content_bounds()),
 220                                 layer->contents_scale_x(),
 221                                 layer->contents_scale_y());
 222   debug_rects_.push_back(
 223       DebugRect(WHEEL_EVENT_HANDLER_RECT_TYPE,
 224                 MathUtil::MapEnclosingClippedRect(
 225                     layer->screen_space_transform(), wheel_rect)));
 226 }
 227
 228 void DebugRectHistory::SaveScrollEventHandlerRects(LayerImpl* layer) {
 229   LayerTreeHostCommon::CallFunctionForSubtree<LayerImpl>(
 230       layer,
 231       base::Bind(&DebugRectHistory::SaveScrollEventHandlerRectsCallback,
 232                  base::Unretained(this)));
 233 }
 234
 235 void DebugRectHistory::SaveScrollEventHandlerRectsCallback(LayerImpl* layer) {
 236   if (!layer->have_scroll_event_handlers())
 237     return;
 238
 239   gfx::Rect scroll_rect =
 240       gfx::ScaleToEnclosingRect(gfx::Rect(layer->content_bounds()),
 241                                 layer->contents_scale_x(),
 242                                 layer->contents_scale_y());
 243   debug_rects_.push_back(
 244       DebugRect(SCROLL_EVENT_HANDLER_RECT_TYPE,
 245                 MathUtil::MapEnclosingClippedRect(
 246                     layer->screen_space_transform(), scroll_rect)));
 247 }
 248
 249 void DebugRectHistory::SaveNonFastScrollableRects(LayerImpl* layer) {
 250   LayerTreeHostCommon::CallFunctionForSubtree<LayerImpl>(
 251       layer,
 252       base::Bind(&DebugRectHistory::SaveNonFastScrollableRectsCallback,
 253                  base::Unretained(this)));
 254 }
 255
 256 void DebugRectHistory::SaveNonFastScrollableRectsCallback(LayerImpl* layer) {
 257   for (Region::Iterator iter(layer->non_fast_scrollable_region());
 258        iter.has_rect();
 259        iter.next()) {
 260     gfx::Rect scroll_rect = gfx::ScaleToEnclosingRect(
 261         iter.rect(), layer->contents_scale_x(), layer->contents_scale_y());
 262     debug_rects_.push_back(
 263         DebugRect(NON_FAST_SCROLLABLE_RECT_TYPE,
 264                   MathUtil::MapEnclosingClippedRect(
 265                       layer->screen_space_transform(), scroll_rect)));
 266   }
 267 }
 268
 269 void DebugRectHistory::SaveLayerAnimationBoundsRects(
 270     const LayerImplList& render_surface_layer_list) {
 271   typedef LayerIterator<LayerImpl> LayerIteratorType;
 272   LayerIteratorType end = LayerIteratorType::End(&render_surface_layer_list);
 273   for (LayerIteratorType it =
 274            LayerIteratorType::Begin(&render_surface_layer_list);
 275        it != end; ++it) {
 276     if (!it.represents_itself())
 277       continue;
 278
 279     // TODO(avallee): Figure out if we should show something for a layer who's
 280     // animating bounds but that we can't compute them.
 281     gfx::BoxF inflated_bounds;
 282     if (!LayerUtils::GetAnimationBounds(**it, &inflated_bounds))
 283       continue;
 284
 285     debug_rects_.push_back(
 286         DebugRect(ANIMATION_BOUNDS_RECT_TYPE,
 287                   gfx::ToEnclosingRect(gfx::RectF(inflated_bounds.x(),
 288                                                   inflated_bounds.y(),
 289                                                   inflated_bounds.width(),
 290                                                   inflated_bounds.height()))));
 291   }
 292 }
 293
 294 }  // namespace cc