Add OnDisplayMetricsChanged in DisplayObserver.

ash/display/display_controller_unittest.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "ash/display/display_controller.h"
 
 #include "ash/ash_switches.h"
 #include "ash/display/display_info.h"
 #include "ash/display/display_layout_store.h"
 #include "ash/display/display_manager.h"
@@ skipping 49 matching lines @@
 
 class TestObserver : public DisplayController::Observer,
                      public gfx::DisplayObserver,
                      public aura::client::FocusChangeObserver,
                      public aura::client::ActivationChangeObserver {
  public:
   TestObserver()
       : changing_count_(0),
         changed_count_(0),
         bounds_changed_count_(0),
+        rotation_changed_count_(0),
+        workarea_changed_count_(0),
         changed_display_id_(0),
         focus_changed_count_(0),
         activation_changed_count_(0) {
     Shell::GetInstance()->display_controller()->AddObserver(this);
     Shell::GetScreen()->AddObserver(this);
     aura::client::GetFocusClient(Shell::GetPrimaryRootWindow())->
         AddObserver(this);
     aura::client::GetActivationClient(Shell::GetPrimaryRootWindow())->
         AddObserver(this);
   }
 
   virtual ~TestObserver() {
     Shell::GetInstance()->display_controller()->RemoveObserver(this);
     Shell::GetScreen()->RemoveObserver(this);
     aura::client::GetFocusClient(Shell::GetPrimaryRootWindow())->
         RemoveObserver(this);
     aura::client::GetActivationClient(Shell::GetPrimaryRootWindow())->
         RemoveObserver(this);
   }
 
   // Overridden from DisplayController::Observer
   virtual void OnDisplayConfigurationChanging() OVERRIDE {
     ++changing_count_;
   }
   virtual void OnDisplayConfigurationChanged() OVERRIDE {
     ++changed_count_;
   }
 
   // Overrideen from gfx::DisplayObserver
-  virtual void OnDisplayBoundsChanged(const gfx::Display& display) OVERRIDE {
+  virtual void OnDisplayMetricsChanged(const gfx::Display& display,
+      DisplayObserver::MetricsType metrics) OVERRIDE {
     changed_display_id_ = display.id();
-    bounds_changed_count_ ++;
+    if (metrics & DISPLAY_METRICS_BOUNDS)
+      ++bounds_changed_count_;
+    if (metrics & DISPLAY_METRICS_ROTATION)
+      ++rotation_changed_count_;
+    if (metrics & DISPLAY_METRICS_WORKAREA)
+      ++workarea_changed_count_;
   }
   virtual void OnDisplayAdded(const gfx::Display& new_display) OVERRIDE {
   }
   virtual void OnDisplayRemoved(const gfx::Display& old_display) OVERRIDE {
   }
 
   // Overridden from aura::client::FocusChangeObserver
   virtual void OnWindowFocused(aura::Window* gained_focus,
                                aura::Window* lost_focus) OVERRIDE {
     focus_changed_count_++;
@@ skipping 12 matching lines @@
   int CountAndReset() {
     EXPECT_EQ(changing_count_, changed_count_);
     changed_count_ = 0;
     return Resetter<int>(&changing_count_).value();
   }
 
   int64 GetBoundsChangedCountAndReset() {
     return Resetter<int>(&bounds_changed_count_).value();
   }
 
+  int64 GetRotationChangedCountAndReset() {
+    return Resetter<int>(&rotation_changed_count_).value();
+  }
+
+  int64 GetWorkareaChangedCountAndReset() {
+    return Resetter<int>(&workarea_changed_count_).value();
+  }
+
   int64 GetChangedDisplayIdAndReset() {
     return Resetter<int64>(&changed_display_id_).value();
   }
 
   int GetFocusChangedCountAndReset() {
     return Resetter<int>(&focus_changed_count_).value();
   }
 
   int GetActivationChangedCountAndReset() {
     return Resetter<int>(&activation_changed_count_).value();
   }
 
  private:
   int changing_count_;
   int changed_count_;
 
   int bounds_changed_count_;
+  int rotation_changed_count_;
+  int workarea_changed_count_;
   int64 changed_display_id_;
 
   int focus_changed_count_;
   int activation_changed_count_;
 
   DISALLOW_COPY_AND_ASSIGN(TestObserver);
 };
 
 gfx::Display GetPrimaryDisplay() {
   return Shell::GetScreen()->GetDisplayNearestWindow(
@@ skipping 219 matching lines @@
     return;
 
   // Creates windows to catch activation change event.
   scoped_ptr<aura::Window> w1(CreateTestWindowInShellWithId(1));
   w1->Focus();
 
   TestObserver observer;
   UpdateDisplay("500x500,400x400");
   EXPECT_EQ(1, observer.CountAndReset());  // resize and add
   EXPECT_EQ(1, observer.GetBoundsChangedCountAndReset());
+  EXPECT_EQ(1, observer.GetWorkareaChangedCountAndReset());
   EXPECT_EQ(0, observer.GetFocusChangedCountAndReset());
   EXPECT_EQ(0, observer.GetActivationChangedCountAndReset());
   gfx::Insets insets(5, 5, 5, 5);
   int64 secondary_display_id = ScreenUtil::GetSecondaryDisplay().id();
   Shell::GetInstance()->display_manager()->UpdateWorkAreaOfDisplay(
       secondary_display_id, insets);
 
   // Default layout is RIGHT.
   EXPECT_EQ("0,0 500x500", GetPrimaryDisplay().bounds().ToString());
   EXPECT_EQ("500,0 400x400", GetSecondaryDisplay().bounds().ToString());
   EXPECT_EQ("505,5 390x390", GetSecondaryDisplay().work_area().ToString());
   EXPECT_EQ(0, observer.GetFocusChangedCountAndReset());
   EXPECT_EQ(0, observer.GetActivationChangedCountAndReset());
 
   // Layout the secondary display to the bottom of the primary.
   SetSecondaryDisplayLayout(DisplayLayout::BOTTOM);
   EXPECT_EQ(1, observer.CountAndReset());
   EXPECT_EQ(1, observer.GetBoundsChangedCountAndReset());
+  EXPECT_EQ(1, observer.GetWorkareaChangedCountAndReset());
   EXPECT_EQ(0, observer.GetFocusChangedCountAndReset());
   EXPECT_EQ(0, observer.GetActivationChangedCountAndReset());
   EXPECT_EQ(secondary_display_id, observer.GetChangedDisplayIdAndReset());
   EXPECT_EQ("0,0 500x500", GetPrimaryDisplay().bounds().ToString());
   EXPECT_EQ("0,500 400x400", GetSecondaryDisplay().bounds().ToString());
   EXPECT_EQ("5,505 390x390", GetSecondaryDisplay().work_area().ToString());
 
   // Layout the secondary display to the left of the primary.
   SetSecondaryDisplayLayout(DisplayLayout::LEFT);
   EXPECT_EQ(1, observer.CountAndReset());
   EXPECT_EQ(1, observer.GetBoundsChangedCountAndReset());
+  EXPECT_EQ(1, observer.GetWorkareaChangedCountAndReset());
   EXPECT_EQ(0, observer.GetFocusChangedCountAndReset());
   EXPECT_EQ(0, observer.GetActivationChangedCountAndReset());
   EXPECT_EQ(secondary_display_id, observer.GetChangedDisplayIdAndReset());
   EXPECT_EQ("0,0 500x500", GetPrimaryDisplay().bounds().ToString());
   EXPECT_EQ("-400,0 400x400", GetSecondaryDisplay().bounds().ToString());
   EXPECT_EQ("-395,5 390x390", GetSecondaryDisplay().work_area().ToString());
 
   // Layout the secondary display to the top of the primary.
   SetSecondaryDisplayLayout(DisplayLayout::TOP);
   EXPECT_EQ(1, observer.CountAndReset());
   EXPECT_EQ(1, observer.GetBoundsChangedCountAndReset());
+  EXPECT_EQ(1, observer.GetWorkareaChangedCountAndReset());
   EXPECT_EQ(0, observer.GetFocusChangedCountAndReset());
   EXPECT_EQ(0, observer.GetActivationChangedCountAndReset());
   EXPECT_EQ(secondary_display_id, observer.GetChangedDisplayIdAndReset());
   EXPECT_EQ("0,0 500x500", GetPrimaryDisplay().bounds().ToString());
   EXPECT_EQ("0,-400 400x400", GetSecondaryDisplay().bounds().ToString());
   EXPECT_EQ("5,-395 390x390", GetSecondaryDisplay().work_area().ToString());
 
   // Layout to the right with an offset.
   SetSecondaryDisplayLayoutAndOffset(DisplayLayout::RIGHT, 300);
   EXPECT_EQ(1, observer.CountAndReset());  // resize and add
   EXPECT_EQ(1, observer.GetBoundsChangedCountAndReset());
+  EXPECT_EQ(1, observer.GetWorkareaChangedCountAndReset());
   EXPECT_EQ(0, observer.GetFocusChangedCountAndReset());
   EXPECT_EQ(0, observer.GetActivationChangedCountAndReset());
   EXPECT_EQ(secondary_display_id, observer.GetChangedDisplayIdAndReset());
   EXPECT_EQ("0,0 500x500", GetPrimaryDisplay().bounds().ToString());
   EXPECT_EQ("500,300 400x400", GetSecondaryDisplay().bounds().ToString());
 
   // Keep the minimum 100.
   SetSecondaryDisplayLayoutAndOffset(DisplayLayout::RIGHT, 490);
   EXPECT_EQ(1, observer.CountAndReset());  // resize and add
   EXPECT_EQ(1, observer.GetBoundsChangedCountAndReset());
+  EXPECT_EQ(1, observer.GetWorkareaChangedCountAndReset());
   EXPECT_EQ(0, observer.GetFocusChangedCountAndReset());
   EXPECT_EQ(0, observer.GetActivationChangedCountAndReset());
   EXPECT_EQ(secondary_display_id, observer.GetChangedDisplayIdAndReset());
   EXPECT_EQ("0,0 500x500", GetPrimaryDisplay().bounds().ToString());
   EXPECT_EQ("500,400 400x400", GetSecondaryDisplay().bounds().ToString());
 
   SetSecondaryDisplayLayoutAndOffset(DisplayLayout::RIGHT, -400);
   EXPECT_EQ(secondary_display_id, observer.GetChangedDisplayIdAndReset());
   EXPECT_EQ(1, observer.GetBoundsChangedCountAndReset());
+  EXPECT_EQ(1, observer.GetWorkareaChangedCountAndReset());
   EXPECT_EQ(1, observer.CountAndReset());  // resize and add
   EXPECT_EQ(0, observer.GetFocusChangedCountAndReset());
   EXPECT_EQ(0, observer.GetActivationChangedCountAndReset());
   EXPECT_EQ("0,0 500x500", GetPrimaryDisplay().bounds().ToString());
   EXPECT_EQ("500,-300 400x400", GetSecondaryDisplay().bounds().ToString());
 
   //  Layout to the bottom with an offset.
   SetSecondaryDisplayLayoutAndOffset(DisplayLayout::BOTTOM, -200);
   EXPECT_EQ(secondary_display_id, observer.GetChangedDisplayIdAndReset());
   EXPECT_EQ(1, observer.GetBoundsChangedCountAndReset());
+  EXPECT_EQ(1, observer.GetWorkareaChangedCountAndReset());
   EXPECT_EQ(1, observer.CountAndReset());  // resize and add
   EXPECT_EQ(0, observer.GetFocusChangedCountAndReset());
   EXPECT_EQ(0, observer.GetActivationChangedCountAndReset());
   EXPECT_EQ("0,0 500x500", GetPrimaryDisplay().bounds().ToString());
   EXPECT_EQ("-200,500 400x400", GetSecondaryDisplay().bounds().ToString());
 
   // Keep the minimum 100.
   SetSecondaryDisplayLayoutAndOffset(DisplayLayout::BOTTOM, 490);
   EXPECT_EQ(secondary_display_id, observer.GetChangedDisplayIdAndReset());
   EXPECT_EQ(1, observer.GetBoundsChangedCountAndReset());
+  EXPECT_EQ(1, observer.GetWorkareaChangedCountAndReset());
   EXPECT_EQ(1, observer.CountAndReset());  // resize and add
   EXPECT_EQ(0, observer.GetFocusChangedCountAndReset());
   EXPECT_EQ(0, observer.GetActivationChangedCountAndReset());
   EXPECT_EQ("0,0 500x500", GetPrimaryDisplay().bounds().ToString());
   EXPECT_EQ("400,500 400x400", GetSecondaryDisplay().bounds().ToString());
 
   SetSecondaryDisplayLayoutAndOffset(DisplayLayout::BOTTOM, -400);
   EXPECT_EQ(secondary_display_id, observer.GetChangedDisplayIdAndReset());
   EXPECT_EQ(1, observer.GetBoundsChangedCountAndReset());
+  EXPECT_EQ(1, observer.GetWorkareaChangedCountAndReset());
   EXPECT_EQ(1, observer.CountAndReset());  // resize and add
   EXPECT_EQ(0, observer.GetFocusChangedCountAndReset());
   EXPECT_EQ(0, observer.GetActivationChangedCountAndReset());
   EXPECT_EQ("0,0 500x500", GetPrimaryDisplay().bounds().ToString());
   EXPECT_EQ("-300,500 400x400", GetSecondaryDisplay().bounds().ToString());
 
   // Setting the same layout shouldn't invoke observers.
   SetSecondaryDisplayLayoutAndOffset(DisplayLayout::BOTTOM, -400);
   EXPECT_EQ(0, observer.GetChangedDisplayIdAndReset());
   EXPECT_EQ(0, observer.GetBoundsChangedCountAndReset());
+  EXPECT_EQ(0, observer.GetWorkareaChangedCountAndReset());
   EXPECT_EQ(0, observer.CountAndReset());  // resize and add
   EXPECT_EQ(0, observer.GetFocusChangedCountAndReset());
   EXPECT_EQ(0, observer.GetActivationChangedCountAndReset());
   EXPECT_EQ("0,0 500x500", GetPrimaryDisplay().bounds().ToString());
   EXPECT_EQ("-300,500 400x400", GetSecondaryDisplay().bounds().ToString());
 
   UpdateDisplay("500x500");
   EXPECT_LE(1, observer.GetFocusChangedCountAndReset());
   EXPECT_LE(1, observer.GetActivationChangedCountAndReset());
 }
@@ skipping 43 matching lines @@
   EXPECT_EQ("0,0 250x250", w1->bounds().ToString());
   // Dock mode.
   TestObserver observer;
   display_info_list.clear();
   display_info_list.push_back(external_display_info);
   display_manager->OnNativeDisplaysChanged(display_info_list);
   EXPECT_EQ(1U, display_manager->GetNumDisplays());
   EXPECT_EQ(1U, display_manager->num_connected_displays());
   EXPECT_EQ(0, observer.GetChangedDisplayIdAndReset());
   EXPECT_EQ(0, observer.GetBoundsChangedCountAndReset());
+  EXPECT_EQ(0, observer.GetWorkareaChangedCountAndReset());
   EXPECT_EQ(1, observer.CountAndReset());
   EXPECT_EQ(0, observer.GetFocusChangedCountAndReset());
   EXPECT_EQ(0, observer.GetActivationChangedCountAndReset());
 
   EXPECT_TRUE(window_state->IsFullscreen());
   EXPECT_EQ("0,0 500x500", w1->bounds().ToString());
 }
 
 TEST_F(DisplayControllerTest, BoundsUpdated) {
   if (!SupportsMultipleDisplays())
@@ skipping 48 matching lines @@
   EXPECT_EQ("0,0 200x250", GetPrimaryDisplay().bounds().ToString());
   EXPECT_EQ("0,250 300x300", GetSecondaryDisplay().bounds().ToString());
 
   // No change
   UpdateDisplay("400x500*2,300x300");
   EXPECT_EQ(0, observer.CountAndReset());
   EXPECT_EQ(0, observer.GetFocusChangedCountAndReset());
   EXPECT_EQ(0, observer.GetActivationChangedCountAndReset());
 
   // Rotation
+  observer.GetRotationChangedCountAndReset(); // we only want to reset.
   int64 primary_id = GetPrimaryDisplay().id();
   display_manager->SetDisplayRotation(primary_id, gfx::Display::ROTATE_90);
+  EXPECT_EQ(2, observer.GetRotationChangedCountAndReset());
   EXPECT_EQ(1, observer.CountAndReset());
   EXPECT_EQ(0, observer.GetFocusChangedCountAndReset());
   EXPECT_EQ(0, observer.GetActivationChangedCountAndReset());
   display_manager->SetDisplayRotation(primary_id, gfx::Display::ROTATE_90);
+  EXPECT_EQ(0, observer.GetRotationChangedCountAndReset());
   EXPECT_EQ(0, observer.CountAndReset());
   EXPECT_EQ(0, observer.GetFocusChangedCountAndReset());
   EXPECT_EQ(0, observer.GetActivationChangedCountAndReset());
 
   // UI scale is eanbled only on internal display.
   int64 secondary_id = GetSecondaryDisplay().id();
   gfx::Display::SetInternalDisplayId(secondary_id);
   display_manager->SetDisplayUIScale(secondary_id, 1.125f);
   EXPECT_EQ(1, observer.CountAndReset());
   EXPECT_EQ(0, observer.GetFocusChangedCountAndReset());
@@ skipping 379 matching lines @@
   DisplayManager* display_manager = Shell::GetInstance()->display_manager();
   TestEventHandler event_handler;
   Shell::GetInstance()->AddPreTargetHandler(&event_handler);
 
   UpdateDisplay("120x200,300x400*2");
   gfx::Display display1 = Shell::GetScreen()->GetPrimaryDisplay();
   int64 display2_id = ScreenUtil::GetSecondaryDisplay().id();
   aura::Window::Windows root_windows = Shell::GetAllRootWindows();
   aura::test::EventGenerator generator1(root_windows[0]);
 
+  TestObserver observer;
   EXPECT_EQ("120x200", root_windows[0]->bounds().size().ToString());
   EXPECT_EQ("150x200", root_windows[1]->bounds().size().ToString());
   EXPECT_EQ("120,0 150x200",
             ScreenUtil::GetSecondaryDisplay().bounds().ToString());
   generator1.MoveMouseToInHost(50, 40);
   EXPECT_EQ("50,40", event_handler.GetLocationAndReset());
   EXPECT_EQ(gfx::Display::ROTATE_0, GetStoredRotation(display1.id()));
   EXPECT_EQ(gfx::Display::ROTATE_0, GetStoredRotation(display2_id));
+  EXPECT_EQ(0, observer.GetRotationChangedCountAndReset());
 
   display_manager->SetDisplayRotation(display1.id(),
                                       gfx::Display::ROTATE_90);
   EXPECT_EQ("200x120", root_windows[0]->bounds().size().ToString());
   EXPECT_EQ("150x200", root_windows[1]->bounds().size().ToString());
   EXPECT_EQ("200,0 150x200",
             ScreenUtil::GetSecondaryDisplay().bounds().ToString());
   generator1.MoveMouseToInHost(50, 40);
   EXPECT_EQ("40,69", event_handler.GetLocationAndReset());
   EXPECT_EQ(gfx::Display::ROTATE_90, GetStoredRotation(display1.id()));
   EXPECT_EQ(gfx::Display::ROTATE_0, GetStoredRotation(display2_id));
+  EXPECT_EQ(2, observer.GetRotationChangedCountAndReset());
 
   DisplayLayout display_layout(DisplayLayout::BOTTOM, 50);
   display_manager->SetLayoutForCurrentDisplays(display_layout);
   EXPECT_EQ("50,120 150x200",
             ScreenUtil::GetSecondaryDisplay().bounds().ToString());
 
   display_manager->SetDisplayRotation(display2_id,
                                       gfx::Display::ROTATE_270);
   EXPECT_EQ("200x120", root_windows[0]->bounds().size().ToString());
   EXPECT_EQ("200x150", root_windows[1]->bounds().size().ToString());
   EXPECT_EQ("50,120 200x150",
             ScreenUtil::GetSecondaryDisplay().bounds().ToString());
   EXPECT_EQ(gfx::Display::ROTATE_90, GetStoredRotation(display1.id()));
   EXPECT_EQ(gfx::Display::ROTATE_270, GetStoredRotation(display2_id));
+  EXPECT_EQ(1, observer.GetRotationChangedCountAndReset());
 
 #if !defined(OS_WIN)
   aura::test::EventGenerator generator2(root_windows[1]);
   generator2.MoveMouseToInHost(50, 40);
   EXPECT_EQ("179,25", event_handler.GetLocationAndReset());
   display_manager->SetDisplayRotation(display1.id(),
                                       gfx::Display::ROTATE_180);
 
   EXPECT_EQ("120x200", root_windows[0]->bounds().size().ToString());
   EXPECT_EQ("200x150", root_windows[1]->bounds().size().ToString());
   // Dislay must share at least 100, so the x's offset becomes 20.
   EXPECT_EQ("20,200 200x150",
             ScreenUtil::GetSecondaryDisplay().bounds().ToString());
   EXPECT_EQ(gfx::Display::ROTATE_180, GetStoredRotation(display1.id()));
   EXPECT_EQ(gfx::Display::ROTATE_270, GetStoredRotation(display2_id));
+  EXPECT_EQ(2, observer.GetRotationChangedCountAndReset());
 
   generator1.MoveMouseToInHost(50, 40);
   EXPECT_EQ("69,159", event_handler.GetLocationAndReset());
 #endif
 
   Shell::GetInstance()->RemovePreTargetHandler(&event_handler);
 }
 
 TEST_F(DisplayControllerTest, ScaleRootWindow) {
   if (!SupportsMultipleDisplays())
@@ skipping 200 matching lines @@
   EXPECT_EQ("aura_root_x", GetXWindowName(secondary->GetHost()));
 
   // Switching back to single display.
   UpdateDisplay("300x400");
   EXPECT_EQ("aura_root_0", GetXWindowName(
       Shell::GetPrimaryRootWindow()->GetHost()));
 }
 #endif
 
 }  // namespace ash