cc/test/fake_layer_tree_host_impl.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/test/begin_frame_args_test.h"
   6 #include "cc/test/fake_layer_tree_host_impl.h"
   7 #include "cc/test/test_shared_bitmap_manager.h"
   8 #include "cc/trees/layer_tree_impl.h"
   9
  10 namespace cc {
  11
  12 FakeLayerTreeHostImpl::FakeLayerTreeHostImpl(Proxy* proxy,
  13                                              SharedBitmapManager* manager)
  14     : LayerTreeHostImpl(LayerTreeSettings(),
  15                         &client_,
  16                         proxy,
  17                         &stats_instrumentation_,
  18                         manager,
  19                         0) {
  20   // Explicitly clear all debug settings.
  21   SetDebugState(LayerTreeDebugState());
  22   SetViewportSize(gfx::Size(100, 100));
  23
  24   // Avoid using Now() as the frame time in unit tests.
  25   base::TimeTicks time_ticks = base::TimeTicks::FromInternalValue(1);
  26   SetCurrentBeginFrameArgs(CreateBeginFrameArgsForTesting(time_ticks));
  27 }
  28
  29 FakeLayerTreeHostImpl::FakeLayerTreeHostImpl(const LayerTreeSettings& settings,
  30                                              Proxy* proxy,
  31                                              SharedBitmapManager* manager)
  32     : LayerTreeHostImpl(settings,
  33                         &client_,
  34                         proxy,
  35                         &stats_instrumentation_,
  36                         manager,
  37                         0) {
  38   // Explicitly clear all debug settings.
  39   SetDebugState(LayerTreeDebugState());
  40
  41   // Avoid using Now() as the frame time in unit tests.
  42   base::TimeTicks time_ticks = base::TimeTicks::FromInternalValue(1);
  43   SetCurrentBeginFrameArgs(CreateBeginFrameArgsForTesting(time_ticks));
  44 }
  45
  46 FakeLayerTreeHostImpl::~FakeLayerTreeHostImpl() {}
  47
  48 void FakeLayerTreeHostImpl::CreatePendingTree() {
  49   LayerTreeHostImpl::CreatePendingTree();
  50   float arbitrary_large_page_scale = 100000.f;
  51   pending_tree()->SetPageScaleFactorAndLimits(
  52       1.f, 1.f / arbitrary_large_page_scale, arbitrary_large_page_scale);
  53 }
  54
  55 BeginFrameArgs FakeLayerTreeHostImpl::CurrentBeginFrameArgs() const {
  56   if (!current_begin_frame_args_.IsValid())
  57     return LayerTreeHostImpl::CurrentBeginFrameArgs();
  58   return current_begin_frame_args_;
  59 }
  60
  61 void FakeLayerTreeHostImpl::SetCurrentBeginFrameArgs(
  62     const BeginFrameArgs& args) {
  63   current_begin_frame_args_ = args;
  64 }
  65
  66 int FakeLayerTreeHostImpl::RecursiveUpdateNumChildren(LayerImpl* layer) {
  67   int num_children_that_draw_content = 0;
  68   for (size_t i = 0; i < layer->children().size(); ++i) {
  69     num_children_that_draw_content +=
  70         RecursiveUpdateNumChildren(layer->children()[i]);
  71   }
  72   if (layer->DrawsContent() && layer->HasDelegatedContent())
  73     num_children_that_draw_content += 1000;
  74   layer->SetNumDescendantsThatDrawContent(num_children_that_draw_content);
  75   return num_children_that_draw_content + (layer->DrawsContent() ? 1 : 0);
  76 }
  77
  78 void FakeLayerTreeHostImpl::UpdateNumChildrenAndDrawPropertiesForActiveTree() {
  79   UpdateNumChildrenAndDrawProperties(active_tree());
  80 }
  81
  82 void FakeLayerTreeHostImpl::UpdateNumChildrenAndDrawProperties(
  83     LayerTreeImpl* layerTree) {
  84   RecursiveUpdateNumChildren(layerTree->root_layer());
  85   layerTree->UpdateDrawProperties();
  86 }
  87
  88 }  // namespace cc