cc/layers/heads_up_display_unittest.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/layers/heads_up_display_layer.h"
   6 #include "cc/layers/layer.h"
   7 #include "cc/test/layer_tree_test.h"
   8 #include "cc/trees/layer_tree_host.h"
   9
  10 namespace cc {
  11 namespace {
  12
  13 class HeadsUpDisplayTest : public LayerTreeTest {
  14  protected:
  15   void InitializeSettings(LayerTreeSettings* settings) override {
  16     // Enable the HUD without requiring text.
  17     settings->initial_debug_state.show_property_changed_rects = true;
  18   }
  19 };
  20
  21 class DrawsContentLayer : public Layer {
  22  public:
  23   static scoped_refptr<DrawsContentLayer> Create() {
  24     return make_scoped_refptr(new DrawsContentLayer());
  25   }
  26   bool DrawsContent() const override { return true; }
  27
  28  private:
  29   DrawsContentLayer() : Layer() {}
  30   ~DrawsContentLayer() override {}
  31 };
  32
  33 class HudWithRootLayerChange : public HeadsUpDisplayTest {
  34  public:
  35   HudWithRootLayerChange()
  36       : root_layer1_(DrawsContentLayer::Create()),
  37         root_layer2_(DrawsContentLayer::Create()),
  38         num_commits_(0) {}
  39
  40   void BeginTest() override {
  41     root_layer1_->SetBounds(gfx::Size(30, 30));
  42     root_layer2_->SetBounds(gfx::Size(30, 30));
  43
  44     PostSetNeedsCommitToMainThread();
  45   }
  46
  47   void DidCommit() override {
  48     ++num_commits_;
  49
  50     ASSERT_TRUE(layer_tree_host()->hud_layer());
  51
  52     switch (num_commits_) {
  53       case 1:
  54         // Change directly to a new root layer.
  55         layer_tree_host()->SetRootLayer(root_layer1_);
  56         break;
  57       case 2:
  58         EXPECT_EQ(root_layer1_.get(), layer_tree_host()->hud_layer()->parent());
  59         // Unset the root layer.
  60         layer_tree_host()->SetRootLayer(nullptr);
  61         break;
  62       case 3:
  63         EXPECT_EQ(0, layer_tree_host()->hud_layer()->parent());
  64         // Change back to the previous root layer.
  65         layer_tree_host()->SetRootLayer(root_layer1_);
  66         break;
  67       case 4:
  68         EXPECT_EQ(root_layer1_.get(), layer_tree_host()->hud_layer()->parent());
  69         // Unset the root layer.
  70         layer_tree_host()->SetRootLayer(nullptr);
  71         break;
  72       case 5:
  73         EXPECT_EQ(0, layer_tree_host()->hud_layer()->parent());
  74         // Change to a new root layer from a null root.
  75         layer_tree_host()->SetRootLayer(root_layer2_);
  76         break;
  77       case 6:
  78         EXPECT_EQ(root_layer2_.get(), layer_tree_host()->hud_layer()->parent());
  79         // Change directly back to the last root layer/
  80         layer_tree_host()->SetRootLayer(root_layer1_);
  81         break;
  82       case 7:
  83         EXPECT_EQ(root_layer1_.get(), layer_tree_host()->hud_layer()->parent());
  84         EndTest();
  85         break;
  86     }
  87   }
  88
  89   void AfterTest() override {}
  90
  91  private:
  92   scoped_refptr<DrawsContentLayer> root_layer1_;
  93   scoped_refptr<DrawsContentLayer> root_layer2_;
  94   int num_commits_;
  95 };
  96
  97 MULTI_THREAD_TEST_F(HudWithRootLayerChange);
  98
  99 }  // namespace
 100 }  // namespace cc