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| 1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. | 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 | 2 // Use of this source code is governed by a BSD-style license that can be |
| 3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
| 4 | 4 |
| 5 #ifndef UI_EVENTS_X_DEVICE_LIST_CACHE_X_H_ | 5 #ifndef UI_EVENTS_DEVICES_X11_DEVICE_LIST_CACHE_X11_H_ |
| 6 #define UI_EVENTS_X_DEVICE_LIST_CACHE_X_H_ | 6 #define UI_EVENTS_DEVICES_X11_DEVICE_LIST_CACHE_X11_H_ |
| 7 | 7 |
| 8 #include <X11/extensions/XInput.h> | 8 #include <X11/extensions/XInput.h> |
| 9 #include <X11/extensions/XInput2.h> | 9 #include <X11/extensions/XInput2.h> |
| 10 | 10 |
| 11 #include <map> | 11 #include <map> |
| 12 | 12 |
| 13 #include "base/basictypes.h" | 13 #include "base/basictypes.h" |
| 14 #include "ui/events/events_base_export.h" | 14 #include "ui/events/devices/events_devices_export.h" |
| 15 | 15 |
| 16 template <typename T> struct DefaultSingletonTraits; | 16 template <typename T> struct DefaultSingletonTraits; |
| 17 | 17 |
| 18 typedef struct _XDisplay Display; | 18 typedef struct _XDisplay Display; |
| 19 | 19 |
| 20 template <typename T> | 20 template <typename T> |
| 21 struct DeviceList { | 21 struct DeviceList { |
| 22 DeviceList() : devices(NULL), count(0) { | 22 DeviceList() : devices(NULL), count(0) { |
| 23 } | 23 } |
| 24 T& operator[] (int x) { | 24 T& operator[] (int x) { |
| 25 return devices[x]; | 25 return devices[x]; |
| 26 } | 26 } |
| 27 const T& operator[](int x) const { return devices[x]; } | 27 const T& operator[](int x) const { return devices[x]; } |
| 28 T* devices; | 28 T* devices; |
| 29 int count; | 29 int count; |
| 30 }; | 30 }; |
| 31 | 31 |
| 32 typedef struct DeviceList<XDeviceInfo> XDeviceList; | 32 typedef struct DeviceList<XDeviceInfo> XDeviceList; |
| 33 typedef struct DeviceList<XIDeviceInfo> XIDeviceList; | 33 typedef struct DeviceList<XIDeviceInfo> XIDeviceList; |
| 34 | 34 |
| 35 namespace ui { | 35 namespace ui { |
| 36 | 36 |
| 37 // A class to cache the current XInput device list. This minimized the | 37 // A class to cache the current XInput device list. This minimized the |
| 38 // round-trip time to the X server whenever such a device list is needed. The | 38 // round-trip time to the X server whenever such a device list is needed. The |
| 39 // update function will be called on each incoming XI_HierarchyChanged event. | 39 // update function will be called on each incoming XI_HierarchyChanged event. |
| 40 class EVENTS_BASE_EXPORT DeviceListCacheX { | 40 class EVENTS_DEVICES_EXPORT DeviceListCacheX11 { |
| 41 public: | 41 public: |
| 42 static DeviceListCacheX* GetInstance(); | 42 static DeviceListCacheX11* GetInstance(); |
| 43 | 43 |
| 44 void UpdateDeviceList(Display* display); | 44 void UpdateDeviceList(Display* display); |
| 45 | 45 |
| 46 // Returns the list of devices associated with |display|. Uses the old X11 | 46 // Returns the list of devices associated with |display|. Uses the old X11 |
| 47 // protocol to get the list of the devices. | 47 // protocol to get the list of the devices. |
| 48 const XDeviceList& GetXDeviceList(Display* display); | 48 const XDeviceList& GetXDeviceList(Display* display); |
| 49 | 49 |
| 50 // Returns the list of devices associated with |display|. Uses the newer | 50 // Returns the list of devices associated with |display|. Uses the newer |
| 51 // XINPUT2 protocol to get the list of devices. Before making this call, make | 51 // XINPUT2 protocol to get the list of devices. Before making this call, make |
| 52 // sure that XInput2 support is available (e.g. by calling | 52 // sure that XInput2 support is available (e.g. by calling |
| 53 // IsXInput2Available()). | 53 // IsXInput2Available()). |
| 54 const XIDeviceList& GetXI2DeviceList(Display* display); | 54 const XIDeviceList& GetXI2DeviceList(Display* display); |
| 55 | 55 |
| 56 private: | 56 private: |
| 57 friend struct DefaultSingletonTraits<DeviceListCacheX>; | 57 friend struct DefaultSingletonTraits<DeviceListCacheX11>; |
| 58 | 58 |
| 59 DeviceListCacheX(); | 59 DeviceListCacheX11(); |
| 60 ~DeviceListCacheX(); | 60 ~DeviceListCacheX11(); |
| 61 | 61 |
| 62 std::map<Display*, XDeviceList> x_dev_list_map_; | 62 std::map<Display*, XDeviceList> x_dev_list_map_; |
| 63 std::map<Display*, XIDeviceList> xi_dev_list_map_; | 63 std::map<Display*, XIDeviceList> xi_dev_list_map_; |
| 64 | 64 |
| 65 DISALLOW_COPY_AND_ASSIGN(DeviceListCacheX); | 65 DISALLOW_COPY_AND_ASSIGN(DeviceListCacheX11); |
| 66 }; | 66 }; |
| 67 | 67 |
| 68 } // namespace ui | 68 } // namespace ui |
| 69 | 69 |
| 70 #endif // UI_EVENTS_X_DEVICE_LIST_CACHE_X_H_ | 70 #endif // UI_EVENTS_DEVICES_X11_DEVICE_LIST_CACHE_X11_H_ |
| 71 | 71 |
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