Move all event related devices from ui/events/ to ui/events/devices/

ui/events/x/touch_factory_x11.h

-// 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.
-
-#ifndef UI_EVENTS_X_TOUCH_FACTORY_X11_H_
-#define UI_EVENTS_X_TOUCH_FACTORY_X11_H_
-
-#include <bitset>
-#include <map>
-#include <set>
-#include <utility>
-#include <vector>
-
-#include "ui/events/events_base_export.h"
-#include "ui/gfx/sequential_id_generator.h"
-
-template <typename T> struct DefaultSingletonTraits;
-
-typedef unsigned long Cursor;
-typedef unsigned long Window;
-typedef struct _XDisplay Display;
-typedef union _XEvent XEvent;
-
-namespace ui {
-
-// Functions related to determining touch devices.
-class EVENTS_BASE_EXPORT TouchFactory {
- private:
-  TouchFactory();
-  ~TouchFactory();
-
- public:
-  // Returns the TouchFactory singleton.
-  static TouchFactory* GetInstance();
-
-  // Sets the touch devices from the command line.
-  static void SetTouchDeviceListFromCommandLine();
-
-  // Updates the list of devices.
-  void UpdateDeviceList(Display* display);
-
-  // Checks whether an XI2 event should be processed or not (i.e. if the event
-  // originated from a device we are interested in).
-  bool ShouldProcessXI2Event(XEvent* xevent);
-
-  // Setup an X Window for XInput2 events.
-  void SetupXI2ForXWindow(::Window xid);
-
-  // Keeps a list of touch devices so that it is possible to determine if a
-  // pointer event is a touch-event or a mouse-event. The list is reset each
-  // time this is called.
-  void SetTouchDeviceList(const std::vector<unsigned int>& devices);
-
-  // Is the device a touch-device?
-  bool IsTouchDevice(unsigned int deviceid) const;
-
-  // Is the device a real multi-touch-device? (see doc. for |touch_device_list_|
-  // below for more explanation.)
-  bool IsMultiTouchDevice(unsigned int deviceid) const;
-
-  // Tries to find an existing slot ID mapping to tracking ID. Returns true
-  // if the slot is found and it is saved in |slot|, false if no such slot
-  // can be found.
-  bool QuerySlotForTrackingID(uint32 tracking_id, int* slot);
-
-  // Tries to find an existing slot ID mapping to tracking ID. If there
-  // isn't one already, allocates a new slot ID and sets up the mapping.
-  int GetSlotForTrackingID(uint32 tracking_id);
-
-  // Increases the number of times |ReleaseSlotForTrackingID| needs to be called
-  // on a given tracking id before it will actually be released.
-  void AcquireSlotForTrackingID(uint32 tracking_id);
-
-  // Releases the slot ID mapping to tracking ID.
-  void ReleaseSlotForTrackingID(uint32 tracking_id);
-
-  // Whether any touch device is currently present and enabled.
-  bool IsTouchDevicePresent();
-
-  // Pairs of <vendor id, product id> of external touch screens.
-  const std::set<std::pair<int, int> >& GetTouchscreenIds() const {
-    return touchscreen_ids_;
-  }
-
-  // Return maximum simultaneous touch points supported by device.
-  int GetMaxTouchPoints() const;
-
-  // Resets the TouchFactory singleton.
-  void ResetForTest();
-
-  // Sets up the device id in the list |devices| as multi-touch capable
-  // devices and enables touch events processing. This function is only
-  // for test purpose, and it does not query from X server.
-  void SetTouchDeviceForTest(const std::vector<unsigned int>& devices);
-
-  // Sets up the device id in the list |devices| as pointer devices.
-  // This function is only for test purpose, and it does not query from
-  // X server.
-  void SetPointerDeviceForTest(const std::vector<unsigned int>& devices);
-
- private:
-  // Requirement for Singleton
-  friend struct DefaultSingletonTraits<TouchFactory>;
-
-  void CacheTouchscreenIds(Display* display, int id);
-
-  // NOTE: To keep track of touch devices, we currently maintain a lookup table
-  // to quickly decide if a device is a touch device or not. We also maintain a
-  // list of the touch devices. Ideally, there will be only one touch device,
-  // and instead of having the lookup table and the list, there will be a single
-  // identifier for the touch device. This can be completed after enough testing
-  // on real touch devices.
-
-  static const int kMaxDeviceNum = 128;
-
-  // A quick lookup table for determining if events from the pointer device
-  // should be processed.
-  std::bitset<kMaxDeviceNum> pointer_device_lookup_;
-
-  // A quick lookup table for determining if a device is a touch device.
-  std::bitset<kMaxDeviceNum> touch_device_lookup_;
-
-  // Indicates whether touch events are explicitly disabled.
-  bool touch_events_disabled_;
-
-  // The list of touch devices. For testing/debugging purposes, a single-pointer
-  // device (mouse or touch screen without sufficient X/driver support for MT)
-  // can sometimes be treated as a touch device. The key in the map represents
-  // the device id, and the value represents if the device is multi-touch
-  // capable.
-  std::map<int, bool> touch_device_list_;
-
-  // Touch screen <vid, pid>s.
-  std::set<std::pair<int, int> > touchscreen_ids_;
-
-  // Maps from a tracking id to the number of times |ReleaseSlotForTrackingID|
-  // must be called before the tracking id is released.
-  std::map<uint32, int> tracking_id_refcounts_;
-
-  // Maximum simultaneous touch points supported by device. In the case of
-  // devices with multiple digitizers (e.g. multiple touchscreens), the value
-  // is the maximum of the set of maximum supported contacts by each individual
-  // digitizer.
-  int max_touch_points_;
-
-  // Device ID of the virtual core keyboard.
-  int virtual_core_keyboard_device_;
-
-  SequentialIDGenerator id_generator_;
-
-  DISALLOW_COPY_AND_ASSIGN(TouchFactory);
-};
-
-}  // namespace ui
-
-#endif  // UI_EVENTS_X_TOUCH_FACTORY_X11_H_