ash/display/mouse_cursor_event_filter.h

   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 #ifndef ASH_DISPLAY_MOUSE_CURSOR_EVENT_FILTER_H
   6 #define ASH_DISPLAY_MOUSE_CURSOR_EVENT_FILTER_H
   7
   8 #include "ash/ash_export.h"
   9 #include "ash/display/window_tree_host_manager.h"
  10 #include "base/compiler_specific.h"
  11 #include "base/gtest_prod_util.h"
  12 #include "base/memory/scoped_ptr.h"
  13 #include "ui/events/event_handler.h"
  14 #include "ui/gfx/geometry/rect.h"
  15
  16 namespace aura {
  17 class RootWindow;
  18 class Window;
  19 }
  20
  21 namespace ash {
  22 class DisplayEdgeController;
  23
  24 // An event filter that controls mouse location in extended desktop
  25 // environment.
  26 class ASH_EXPORT MouseCursorEventFilter
  27     : public ui::EventHandler,
  28       public WindowTreeHostManager::Observer {
  29  public:
  30   MouseCursorEventFilter();
  31   ~MouseCursorEventFilter() override;
  32
  33   void set_mouse_warp_enabled(bool enabled) { mouse_warp_enabled_ = enabled; }
  34
  35   // Shows/Hide the indicator for window dragging. The |from|
  36   // is the window where the dragging started.
  37   void ShowSharedEdgeIndicator(aura::Window* from);
  38   void HideSharedEdgeIndicator();
  39
  40   // WindowTreeHostManager::Observer:
  41   void OnDisplaysInitialized() override;
  42   void OnDisplayConfigurationChanged() override;
  43
  44   // ui::EventHandler:
  45   void OnMouseEvent(ui::MouseEvent* event) override;
  46
  47  private:
  48   friend class test::DisplayManagerTestApi;
  49   friend class ExtendedMouseWarpControllerTest;
  50   friend class MouseCursorEventFilterTest;
  51   friend class UnifiedMouseWarpControllerTest;
  52   FRIEND_TEST_ALL_PREFIXES(MouseCursorEventFilterTest, DoNotWarpTwice);
  53   FRIEND_TEST_ALL_PREFIXES(MouseCursorEventFilterTest, SetMouseWarpModeFlag);
  54   FRIEND_TEST_ALL_PREFIXES(MouseCursorEventFilterTest,
  55                            WarpMouseDifferentScaleDisplaysInNative);
  56   FRIEND_TEST_ALL_PREFIXES(DragWindowResizerTest, WarpMousePointer);
  57
  58   MouseWarpController* mouse_warp_controller_for_test() {
  59     return mouse_warp_controller_.get();
  60   }
  61
  62   bool mouse_warp_enabled_;
  63
  64   scoped_ptr<MouseWarpController> mouse_warp_controller_;
  65
  66   DISALLOW_COPY_AND_ASSIGN(MouseCursorEventFilter);
  67 };
  68
  69 }  // namespace ash
  70
  71 #endif  // ASH_DISPLAY_MOUSE_CURSOR_EVENT_FILTER_H