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      1 // Copyright (c) 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 "ash/wm/screen_dimmer.h"
      6 
      7 #include "ash/root_window_controller.h"
      8 #include "ash/shell.h"
      9 #include "ash/test/ash_test_base.h"
     10 #include "base/basictypes.h"
     11 #include "base/memory/scoped_ptr.h"
     12 #include "ui/aura/window_event_dispatcher.h"
     13 #include "ui/compositor/layer.h"
     14 
     15 namespace ash {
     16 namespace test {
     17 
     18 class ScreenDimmerTest : public AshTestBase {
     19  public:
     20   ScreenDimmerTest() : dimmer_(NULL) {}
     21   virtual ~ScreenDimmerTest() {}
     22 
     23   virtual void SetUp() OVERRIDE {
     24     AshTestBase::SetUp();
     25     dimmer_ = Shell::GetPrimaryRootWindowController()->screen_dimmer();
     26     test_api_.reset(new ScreenDimmer::TestApi(dimmer_));
     27   }
     28 
     29  protected:
     30   ScreenDimmer* dimmer_;  // not owned
     31 
     32   scoped_ptr<ScreenDimmer::TestApi> test_api_;
     33 
     34  private:
     35   DISALLOW_COPY_AND_ASSIGN(ScreenDimmerTest);
     36 };
     37 
     38 TEST_F(ScreenDimmerTest, DimAndUndim) {
     39   // Don't create a layer until we need to.
     40   EXPECT_TRUE(test_api_->layer() == NULL);
     41   dimmer_->SetDimming(false);
     42   EXPECT_TRUE(test_api_->layer() == NULL);
     43 
     44   // When we enable dimming, the layer should be created and stacked at the top
     45   // of the root's children.
     46   dimmer_->SetDimming(true);
     47   ASSERT_TRUE(test_api_->layer() != NULL);
     48   ui::Layer* root_layer = Shell::GetPrimaryRootWindow()->layer();
     49   ASSERT_TRUE(!root_layer->children().empty());
     50   EXPECT_EQ(test_api_->layer(), root_layer->children().back());
     51   EXPECT_TRUE(test_api_->layer()->visible());
     52   EXPECT_GT(test_api_->layer()->GetTargetOpacity(), 0.0f);
     53 
     54   // When we disable dimming, the layer should be animated back to full
     55   // transparency.
     56   dimmer_->SetDimming(false);
     57   ASSERT_TRUE(test_api_->layer() != NULL);
     58   EXPECT_TRUE(test_api_->layer()->visible());
     59   EXPECT_FLOAT_EQ(0.0f, test_api_->layer()->GetTargetOpacity());
     60 }
     61 
     62 TEST_F(ScreenDimmerTest, ResizeLayer) {
     63   // The dimming layer should be initially sized to cover the root window.
     64   dimmer_->SetDimming(true);
     65   ui::Layer* dimming_layer = test_api_->layer();
     66   ASSERT_TRUE(dimming_layer != NULL);
     67   ui::Layer* root_layer = Shell::GetPrimaryRootWindow()->layer();
     68   EXPECT_EQ(gfx::Rect(root_layer->bounds().size()).ToString(),
     69             dimming_layer->bounds().ToString());
     70 
     71   // When we resize the root window, the dimming layer should be resized to
     72   // match.
     73   gfx::Rect kNewBounds(400, 300);
     74   Shell::GetPrimaryRootWindow()->GetHost()->SetBounds(kNewBounds);
     75   EXPECT_EQ(kNewBounds.ToString(), dimming_layer->bounds().ToString());
     76 }
     77 
     78 }  // namespace test
     79 }  // namespace ash
     80