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                                              TaskGraphRunner* task_graph_runner)
  15     : LayerTreeHostImpl(LayerTreeSettings(),
  16                         &client_,
  17                         proxy,
  18                         &stats_instrumentation_,
  19                         manager,
  20                         NULL,
  21                         task_graph_runner,
  22                         0) {
  23   // Explicitly clear all debug settings.
  24   SetDebugState(LayerTreeDebugState());
  25   SetViewportSize(gfx::Size(100, 100));
  26
  27   // Avoid using Now() as the frame time in unit tests.
  28   base::TimeTicks time_ticks = base::TimeTicks::FromInternalValue(1);
  29   SetCurrentBeginFrameArgs(
  30       CreateBeginFrameArgsForTesting(BEGINFRAME_FROM_HERE, time_ticks));
  31 }
  32
  33 FakeLayerTreeHostImpl::FakeLayerTreeHostImpl(const LayerTreeSettings& settings,
  34                                              Proxy* proxy,
  35                                              SharedBitmapManager* manager,
  36                                              TaskGraphRunner* task_graph_runner)
  37     : LayerTreeHostImpl(settings,
  38                         &client_,
  39                         proxy,
  40                         &stats_instrumentation_,
  41                         manager,
  42                         NULL,
  43                         task_graph_runner,
  44                         0) {
  45   // Explicitly clear all debug settings.
  46   SetDebugState(LayerTreeDebugState());
  47
  48   // Avoid using Now() as the frame time in unit tests.
  49   base::TimeTicks time_ticks = base::TimeTicks::FromInternalValue(1);
  50   SetCurrentBeginFrameArgs(
  51       CreateBeginFrameArgsForTesting(BEGINFRAME_FROM_HERE, time_ticks));
  52 }
  53
  54 FakeLayerTreeHostImpl::~FakeLayerTreeHostImpl() {}
  55
  56 void FakeLayerTreeHostImpl::CreatePendingTree() {
  57   LayerTreeHostImpl::CreatePendingTree();
  58   float arbitrary_large_page_scale = 100000.f;
  59   pending_tree()->PushPageScaleFromMainThread(
  60       1.f, 1.f / arbitrary_large_page_scale, arbitrary_large_page_scale);
  61 }
  62
  63 BeginFrameArgs FakeLayerTreeHostImpl::CurrentBeginFrameArgs() const {
  64   return current_begin_frame_tracker_.DangerousMethodCurrentOrLast();
  65 }
  66
  67 void FakeLayerTreeHostImpl::SetCurrentBeginFrameArgs(
  68     const BeginFrameArgs& args) {
  69   if (!current_begin_frame_tracker_.DangerousMethodHasFinished()) {
  70     current_begin_frame_tracker_.Finish();
  71   }
  72   current_begin_frame_tracker_.Start(args);
  73 }
  74
  75 int FakeLayerTreeHostImpl::RecursiveUpdateNumChildren(LayerImpl* layer) {
  76   int num_children_that_draw_content = 0;
  77   for (size_t i = 0; i < layer->children().size(); ++i) {
  78     num_children_that_draw_content +=
  79         RecursiveUpdateNumChildren(layer->children()[i]);
  80   }
  81   if (layer->DrawsContent() && layer->HasDelegatedContent())
  82     num_children_that_draw_content += 1000;
  83   layer->SetNumDescendantsThatDrawContent(num_children_that_draw_content);
  84   return num_children_that_draw_content + (layer->DrawsContent() ? 1 : 0);
  85 }
  86
  87 void FakeLayerTreeHostImpl::UpdateNumChildrenAndDrawPropertiesForActiveTree() {
  88   UpdateNumChildrenAndDrawProperties(active_tree());
  89 }
  90
  91 void FakeLayerTreeHostImpl::UpdateNumChildrenAndDrawProperties(
  92     LayerTreeImpl* layerTree) {
  93   RecursiveUpdateNumChildren(layerTree->root_layer());
  94   bool update_lcd_text = false;
  95   layerTree->UpdateDrawProperties(update_lcd_text);
  96 }
  97
  98 }  // namespace cc