ui/ozone/platform/drm/host/drm_window_host_manager.h

   1 // Copyright 2014 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 UI_OZONE_PLATFORM_DRM_HOST_DRM_WINDOW_HOST_MANAGER_H_
   6 #define UI_OZONE_PLATFORM_DRM_HOST_DRM_WINDOW_HOST_MANAGER_H_
   7
   8 #include <map>
   9
  10 #include "base/memory/scoped_ptr.h"
  11 #include "ui/gfx/native_widget_types.h"
  12
  13 namespace gfx {
  14 class Point;
  15 }
  16
  17 namespace ui {
  18
  19 class DrmGpuPlatformSupportHost;
  20 class DrmWindowHost;
  21
  22 // Responsible for keeping the mapping between the allocated widgets and
  23 // windows.
  24 class DrmWindowHostManager {
  25  public:
  26   DrmWindowHostManager();
  27   ~DrmWindowHostManager();
  28
  29   gfx::AcceleratedWidget NextAcceleratedWidget();
  30
  31   // Adds a window for |widget|. Note: |widget| should not be associated when
  32   // calling this function.
  33   void AddWindow(gfx::AcceleratedWidget widget, DrmWindowHost* window);
  34
  35   // Removes the window association for |widget|. Note: |widget| must be
  36   // associated with a window when calling this function.
  37   void RemoveWindow(gfx::AcceleratedWidget widget);
  38
  39   // Returns the window associated with |widget|. Note: This function should
  40   // only be called if a valid window has been associated.
  41   DrmWindowHost* GetWindow(gfx::AcceleratedWidget widget);
  42
  43   // Returns the window containing the specified screen location, or NULL.
  44   DrmWindowHost* GetWindowAt(const gfx::Point& location);
  45
  46   // Returns a window. Probably the first one created.
  47   DrmWindowHost* GetPrimaryWindow();
  48
  49   // Tries to set a given widget as the recipient for events. It will
  50   // fail if there is already another widget as recipient.
  51   void GrabEvents(gfx::AcceleratedWidget widget);
  52
  53   // Unsets a given widget as the recipient for events.
  54   void UngrabEvents(gfx::AcceleratedWidget widget);
  55
  56   // Gets the current widget recipient of mouse events.
  57   gfx::AcceleratedWidget event_grabber() const { return event_grabber_; }
  58
  59  private:
  60   typedef std::map<gfx::AcceleratedWidget, DrmWindowHost*> WidgetToWindowMap;
  61
  62   gfx::AcceleratedWidget last_allocated_widget_ = 0;
  63   WidgetToWindowMap window_map_;
  64
  65   gfx::AcceleratedWidget event_grabber_ = gfx::kNullAcceleratedWidget;
  66
  67   DISALLOW_COPY_AND_ASSIGN(DrmWindowHostManager);
  68 };
  69
  70 }  // namespace ui
  71
  72 #endif  // UI_OZONE_PLATFORM_DRM_HOST_DRM_WINDOW_HOST_MANAGER_H_