Implement cursor changing on Mushrome

ash/wm/native_cursor_manager_ash_classic.cc

-// Copyright (c) 2012 The Chromium Authors. All rights reserved.
+// Copyright 2017 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/wm/ash_native_cursor_manager.h"
+#include "ash/wm/native_cursor_manager_ash_classic.h"
 
 #include "ash/display/cursor_window_controller.h"
 #include "ash/display/window_tree_host_manager.h"
 #include "ash/shell.h"
 #include "base/logging.h"
 #include "ui/aura/env.h"
 #include "ui/aura/window_event_dispatcher.h"
 #include "ui/aura/window_tree_host.h"
 #include "ui/base/cursor/cursor.h"
 #include "ui/base/cursor/image_cursors.h"
@@ skipping 29 matching lines @@
 void NotifyMouseEventsEnableStateChange(bool enabled) {
   aura::Window::Windows root_windows = Shell::Get()->GetAllRootWindows();
   for (aura::Window::Windows::iterator iter = root_windows.begin();
        iter != root_windows.end(); ++iter)
     (*iter)->GetHost()->dispatcher()->OnMouseEventsEnableStateChanged(enabled);
   // Mirror window never process events.
 }
 
 }  // namespace
 
-AshNativeCursorManager::AshNativeCursorManager()
+NativeCursorManagerAshClassic::NativeCursorManagerAshClassic()
     : native_cursor_enabled_(true), image_cursors_(new ui::ImageCursors) {}
 
-AshNativeCursorManager::~AshNativeCursorManager() {}
+NativeCursorManagerAshClassic::~NativeCursorManagerAshClassic() {}
 
-void AshNativeCursorManager::SetNativeCursorEnabled(bool enabled) {
+void NativeCursorManagerAshClassic::SetNativeCursorEnabled(bool enabled) {
   native_cursor_enabled_ = enabled;
 
   ::wm::CursorManager* cursor_manager = Shell::Get()->cursor_manager();
   SetCursor(cursor_manager->GetCursor(), cursor_manager);
 }
 
-void AshNativeCursorManager::SetDisplay(
+float NativeCursorManagerAshClassic::GetScale() const {
+  return image_cursors_->GetScale();
+}
+
+display::Display::Rotation NativeCursorManagerAshClassic::GetRotation() const {
+  return image_cursors_->GetRotation();
+}
+
+void NativeCursorManagerAshClassic::SetDisplay(
     const display::Display& display,
     ::wm::NativeCursorManagerDelegate* delegate) {
   DCHECK(display.is_valid());
   // Use the platform's device scale factor instead of the display's, which
   // might have been adjusted for the UI scale.
   const float original_scale = Shell::Get()
                                    ->display_manager()
                                    ->GetDisplayInfo(display.id())
                                    .device_scale_factor();
   // And use the nearest resource scale factor.
   const float cursor_scale =
       ui::GetScaleForScaleFactor(ui::GetSupportedScaleFactor(original_scale));
 
   if (image_cursors_->SetDisplay(display, cursor_scale))
     SetCursor(delegate->GetCursor(), delegate);
 
   Shell::Get()
       ->window_tree_host_manager()
       ->cursor_window_controller()
       ->SetDisplay(display);
 }
 
-void AshNativeCursorManager::SetCursor(
+void NativeCursorManagerAshClassic::SetCursor(
     gfx::NativeCursor cursor,
     ::wm::NativeCursorManagerDelegate* delegate) {
   if (native_cursor_enabled_) {
     image_cursors_->SetPlatformCursor(&cursor);
   } else {
     gfx::NativeCursor invisible_cursor(ui::CursorType::kNone);
     image_cursors_->SetPlatformCursor(&invisible_cursor);
     if (cursor == ui::CursorType::kCustom) {
       // Fall back to the default pointer cursor for now. (crbug.com/476078)
       // TODO(oshima): support custom cursor.
       cursor = ui::CursorType::kPointer;
     } else {
       cursor.SetPlatformCursor(invisible_cursor.platform());
     }
   }
   cursor.set_device_scale_factor(image_cursors_->GetScale());
 
   delegate->CommitCursor(cursor);
 
   if (delegate->IsCursorVisible())
     SetCursorOnAllRootWindows(cursor);
 }
 
-void AshNativeCursorManager::SetCursorSet(
+void NativeCursorManagerAshClassic::SetCursorSet(
     ui::CursorSetType cursor_set,
     ::wm::NativeCursorManagerDelegate* delegate) {
   image_cursors_->SetCursorSet(cursor_set);
   delegate->CommitCursorSet(cursor_set);
 
   // Sets the cursor to reflect the scale change immediately.
   if (delegate->IsCursorVisible())
     SetCursor(delegate->GetCursor(), delegate);
 
   Shell::Get()
       ->window_tree_host_manager()
       ->cursor_window_controller()
       ->SetCursorSet(cursor_set);
 }
 
-void AshNativeCursorManager::SetVisibility(
+void NativeCursorManagerAshClassic::SetVisibility(
     bool visible,
     ::wm::NativeCursorManagerDelegate* delegate) {
   delegate->CommitVisibility(visible);
 
   if (visible) {
     SetCursor(delegate->GetCursor(), delegate);
   } else {
     gfx::NativeCursor invisible_cursor(ui::CursorType::kNone);
     image_cursors_->SetPlatformCursor(&invisible_cursor);
     SetCursorOnAllRootWindows(invisible_cursor);
   }
 
   NotifyCursorVisibilityChange(visible);
 }
 
-void AshNativeCursorManager::SetMouseEventsEnabled(
+void NativeCursorManagerAshClassic::SetMouseEventsEnabled(
     bool enabled,
     ::wm::NativeCursorManagerDelegate* delegate) {
   delegate->CommitMouseEventsEnabled(enabled);
 
   if (enabled) {
     aura::Env::GetInstance()->set_last_mouse_location(
         disabled_cursor_location_);
   } else {
     disabled_cursor_location_ = aura::Env::GetInstance()->last_mouse_location();
   }
 
   SetVisibility(delegate->IsCursorVisible(), delegate);
   NotifyMouseEventsEnableStateChange(enabled);
 }
 
 }  // namespace ash