cc/resources/tile_priority.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/resources/tile_priority.h"
   6
   7 #include "base/values.h"
   8 #include "cc/base/math_util.h"
   9
  10 namespace cc {
  11
  12 scoped_ptr<base::Value> WhichTreeAsValue(WhichTree tree) {
  13   switch (tree) {
  14   case ACTIVE_TREE:
  15       return scoped_ptr<base::Value>(new base::StringValue("ACTIVE_TREE"));
  16   case PENDING_TREE:
  17       return scoped_ptr<base::Value>(new base::StringValue("PENDING_TREE"));
  18   default:
  19       DCHECK(false) << "Unrecognized WhichTree value " << tree;
  20       return scoped_ptr<base::Value>(new base::StringValue(
  21           "<unknown WhichTree value>"));
  22   }
  23 }
  24
  25 scoped_ptr<base::Value> TileResolutionAsValue(
  26     TileResolution resolution) {
  27   switch (resolution) {
  28   case LOW_RESOLUTION:
  29     return scoped_ptr<base::Value>(new base::StringValue("LOW_RESOLUTION"));
  30   case HIGH_RESOLUTION:
  31     return scoped_ptr<base::Value>(new base::StringValue("HIGH_RESOLUTION"));
  32   case NON_IDEAL_RESOLUTION:
  33       return scoped_ptr<base::Value>(new base::StringValue(
  34         "NON_IDEAL_RESOLUTION"));
  35   }
  36   DCHECK(false) << "Unrecognized TileResolution value " << resolution;
  37   return scoped_ptr<base::Value>(new base::StringValue(
  38       "<unknown TileResolution value>"));
  39 }
  40
  41 scoped_ptr<base::Value> TilePriorityBinAsValue(TilePriority::PriorityBin bin) {
  42   switch (bin) {
  43     case TilePriority::NOW:
  44       return scoped_ptr<base::Value>(base::Value::CreateStringValue("NOW"));
  45     case TilePriority::SOON:
  46       return scoped_ptr<base::Value>(base::Value::CreateStringValue("SOON"));
  47     case TilePriority::EVENTUALLY:
  48       return scoped_ptr<base::Value>(
  49           base::Value::CreateStringValue("EVENTUALLY"));
  50   }
  51   DCHECK(false) << "Unrecognized TilePriority::PriorityBin value " << bin;
  52   return scoped_ptr<base::Value>(base::Value::CreateStringValue(
  53       "<unknown TilePriority::PriorityBin value>"));
  54 }
  55
  56 scoped_ptr<base::Value> TilePriority::AsValue() const {
  57   scoped_ptr<base::DictionaryValue> state(new base::DictionaryValue());
  58   state->Set("resolution", TileResolutionAsValue(resolution).release());
  59   state->Set("priority_bin", TilePriorityBinAsValue(priority_bin).release());
  60   state->Set("distance_to_visible",
  61              MathUtil::AsValueSafely(distance_to_visible).release());
  62   return state.PassAs<base::Value>();
  63 }
  64
  65 scoped_ptr<base::Value> TileMemoryLimitPolicyAsValue(
  66     TileMemoryLimitPolicy policy) {
  67   switch (policy) {
  68   case ALLOW_NOTHING:
  69       return scoped_ptr<base::Value>(new base::StringValue("ALLOW_NOTHING"));
  70   case ALLOW_ABSOLUTE_MINIMUM:
  71       return scoped_ptr<base::Value>(new base::StringValue(
  72           "ALLOW_ABSOLUTE_MINIMUM"));
  73   case ALLOW_PREPAINT_ONLY:
  74       return scoped_ptr<base::Value>(new base::StringValue(
  75           "ALLOW_PREPAINT_ONLY"));
  76   case ALLOW_ANYTHING:
  77       return scoped_ptr<base::Value>(new base::StringValue(
  78           "ALLOW_ANYTHING"));
  79   default:
  80       DCHECK(false) << "Unrecognized policy value";
  81       return scoped_ptr<base::Value>(new base::StringValue(
  82           "<unknown>"));
  83   }
  84 }
  85
  86 scoped_ptr<base::Value> TreePriorityAsValue(TreePriority prio) {
  87   switch (prio) {
  88   case SAME_PRIORITY_FOR_BOTH_TREES:
  89       return scoped_ptr<base::Value>(new base::StringValue(
  90           "SAME_PRIORITY_FOR_BOTH_TREES"));
  91   case SMOOTHNESS_TAKES_PRIORITY:
  92       return scoped_ptr<base::Value>(new base::StringValue(
  93           "SMOOTHNESS_TAKES_PRIORITY"));
  94   case NEW_CONTENT_TAKES_PRIORITY:
  95       return scoped_ptr<base::Value>(new base::StringValue(
  96           "NEW_CONTENT_TAKES_PRIORITY"));
  97   }
  98   DCHECK(false) << "Unrecognized priority value " << prio;
  99   return scoped_ptr<base::Value>(new base::StringValue(
 100       "<unknown>"));
 101 }
 102
 103 scoped_ptr<base::Value> GlobalStateThatImpactsTilePriority::AsValue() const {
 104   scoped_ptr<base::DictionaryValue> state(new base::DictionaryValue());
 105   state->Set("memory_limit_policy",
 106              TileMemoryLimitPolicyAsValue(memory_limit_policy).release());
 107   state->SetInteger("soft_memory_limit_in_bytes", soft_memory_limit_in_bytes);
 108   state->SetInteger("hard_memory_limit_in_bytes", hard_memory_limit_in_bytes);
 109   state->SetInteger("num_resources_limit", num_resources_limit);
 110   state->Set("tree_priority", TreePriorityAsValue(tree_priority).release());
 111   return state.PassAs<base::Value>();
 112 }
 113
 114 }  // namespace cc