src/cc/resources/managed_tile_state.cc

   1 // Copyright 2013 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/resources/managed_tile_state.h"
   6
   7 #include <limits>
   8
   9 #include "cc/base/math_util.h"
  10
  11 namespace cc {
  12
  13 scoped_ptr<base::Value> ManagedTileBinAsValue(ManagedTileBin bin) {
  14   switch (bin) {
  15     case NOW_AND_READY_TO_DRAW_BIN:
  16       return scoped_ptr<base::Value>(
  17           new base::StringValue("NOW_AND_READY_TO_DRAW_BIN"));
  18     case NOW_BIN:
  19       return scoped_ptr<base::Value>(new base::StringValue("NOW_BIN"));
  20     case SOON_BIN:
  21       return scoped_ptr<base::Value>(
  22           new base::StringValue("SOON_BIN"));
  23     case EVENTUALLY_AND_ACTIVE_BIN:
  24       return scoped_ptr<base::Value>(
  25           new base::StringValue("EVENTUALLY_AND_ACTIVE_BIN"));
  26     case EVENTUALLY_BIN:
  27       return scoped_ptr<base::Value>(
  28           new base::StringValue("EVENTUALLY_BIN"));
  29     case AT_LAST_AND_ACTIVE_BIN:
  30       return scoped_ptr<base::Value>(
  31           new base::StringValue("AT_LAST_AND_ACTIVE_BIN"));
  32     case AT_LAST_BIN:
  33       return scoped_ptr<base::Value>(
  34           new base::StringValue("AT_LAST_BIN"));
  35     case NEVER_BIN:
  36       return scoped_ptr<base::Value>(
  37           new base::StringValue("NEVER_BIN"));
  38     case NUM_BINS:
  39       NOTREACHED();
  40       return scoped_ptr<base::Value>(
  41           new base::StringValue("Invalid Bin (NUM_BINS)"));
  42   }
  43   return scoped_ptr<base::Value>(
  44       new base::StringValue("Invalid Bin (UNKNOWN)"));
  45 }
  46
  47 ManagedTileState::ManagedTileState()
  48     : raster_mode(LOW_QUALITY_RASTER_MODE),
  49       bin(NEVER_BIN),
  50       resolution(NON_IDEAL_RESOLUTION),
  51       required_for_activation(false),
  52       priority_bin(TilePriority::EVENTUALLY),
  53       distance_to_visible(std::numeric_limits<float>::infinity()),
  54       visible_and_ready_to_draw(false),
  55       scheduled_priority(0) {}
  56
  57 ManagedTileState::TileVersion::TileVersion()
  58     : mode_(RESOURCE_MODE), has_text_(false) {}
  59
  60 ManagedTileState::TileVersion::~TileVersion() { DCHECK(!resource_); }
  61
  62 bool ManagedTileState::TileVersion::IsReadyToDraw() const {
  63   switch (mode_) {
  64     case RESOURCE_MODE:
  65       return !!resource_;
  66     case SOLID_COLOR_MODE:
  67     case PICTURE_PILE_MODE:
  68       return true;
  69   }
  70   NOTREACHED();
  71   return false;
  72 }
  73
  74 size_t ManagedTileState::TileVersion::GPUMemoryUsageInBytes() const {
  75   if (!resource_)
  76     return 0;
  77   return resource_->bytes();
  78 }
  79
  80 ManagedTileState::~ManagedTileState() {}
  81
  82 scoped_ptr<base::Value> ManagedTileState::AsValue() const {
  83   bool has_resource = false;
  84   bool has_active_task = false;
  85   for (int mode = 0; mode < NUM_RASTER_MODES; ++mode) {
  86     has_resource |= (tile_versions[mode].resource_.get() != 0);
  87     has_active_task |= !tile_versions[mode].raster_task_.is_null();
  88   }
  89
  90   bool is_using_gpu_memory = has_resource || has_active_task;
  91
  92   scoped_ptr<base::DictionaryValue> state(new base::DictionaryValue());
  93   state->SetBoolean("has_resource", has_resource);
  94   state->SetBoolean("is_using_gpu_memory", is_using_gpu_memory);
  95   state->Set("bin", ManagedTileBinAsValue(bin).release());
  96   state->Set("resolution", TileResolutionAsValue(resolution).release());
  97   state->Set("priority_bin", TilePriorityBinAsValue(priority_bin).release());
  98   state->Set("distance_to_visible",
  99              MathUtil::AsValueSafely(distance_to_visible).release());
 100   state->SetBoolean("required_for_activation", required_for_activation);
 101   state->SetBoolean(
 102       "is_solid_color",
 103       tile_versions[raster_mode].mode_ == TileVersion::SOLID_COLOR_MODE);
 104   state->SetBoolean(
 105       "is_transparent",
 106       tile_versions[raster_mode].mode_ == TileVersion::SOLID_COLOR_MODE &&
 107           !SkColorGetA(tile_versions[raster_mode].solid_color_));
 108   state->SetInteger("scheduled_priority", scheduled_priority);
 109   return state.PassAs<base::Value>();
 110 }
 111
 112 }  // namespace cc