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      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   virtual 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   virtual bool DrawsContent() const OVERRIDE { return true; }
     27 
     28  private:
     29   DrawsContentLayer() : Layer() {}
     30   virtual ~DrawsContentLayer() {}
     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   virtual 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   virtual 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(NULL);
     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(NULL);
     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   virtual 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
    101