| // 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. |
| |
| #include "ui/events/event_constants.h" |
| |
| #include <cmath> |
| #include <string.h> |
| #include <X11/extensions/XInput.h> |
| #include <X11/extensions/XInput2.h> |
| #include <X11/Xlib.h> |
| |
| #include "base/logging.h" |
| #include "base/memory/singleton.h" |
| #include "base/message_loop/message_pump_x11.h" |
| #include "ui/events/event_utils.h" |
| #include "ui/events/keycodes/keyboard_code_conversion_x.h" |
| #include "ui/events/x/device_data_manager.h" |
| #include "ui/events/x/device_list_cache_x.h" |
| #include "ui/events/x/touch_factory_x11.h" |
| #include "ui/gfx/display.h" |
| #include "ui/gfx/point.h" |
| #include "ui/gfx/rect.h" |
| #include "ui/gfx/screen.h" |
| #include "ui/gfx/x/x11_atom_cache.h" |
| #include "ui/gfx/x/x11_types.h" |
| |
| namespace { |
| |
| // Scroll amount for each wheelscroll event. 53 is also the value used for GTK+. |
| const int kWheelScrollAmount = 53; |
| |
| const int kMinWheelButton = 4; |
| const int kMaxWheelButton = 7; |
| |
| // A class to track current modifier state on master device. Only track ctrl, |
| // alt, shift and caps lock keys currently. The tracked state can then be used |
| // by floating device. |
| class XModifierStateWatcher{ |
| public: |
| static XModifierStateWatcher* GetInstance() { |
| return Singleton<XModifierStateWatcher>::get(); |
| } |
| |
| void UpdateStateFromEvent(const base::NativeEvent& native_event) { |
| // Floating device can't access the modifer state from master device. |
| // We need to track the states of modifier keys in a singleton for |
| // floating devices such as touch screen. Issue 106426 is one example |
| // of why we need the modifier states for floating device. |
| state_ = native_event->xkey.state; |
| // master_state is the state before key press. We need to track the |
| // state after key press for floating device. Currently only ctrl, |
| // shift, alt and caps lock keys are tracked. |
| ui::KeyboardCode keyboard_code = ui::KeyboardCodeFromNative(native_event); |
| unsigned int mask = 0; |
| |
| switch (keyboard_code) { |
| case ui::VKEY_CONTROL: { |
| mask = ControlMask; |
| break; |
| } |
| case ui::VKEY_SHIFT: { |
| mask = ShiftMask; |
| break; |
| } |
| case ui::VKEY_MENU: { |
| mask = Mod1Mask; |
| break; |
| } |
| case ui::VKEY_CAPITAL: { |
| mask = LockMask; |
| break; |
| } |
| default: |
| break; |
| } |
| |
| if (native_event->type == KeyPress) |
| state_ |= mask; |
| else |
| state_ &= ~mask; |
| } |
| |
| // Returns the current modifer state in master device. It only contains the |
| // state of ctrl, shift, alt and caps lock keys. |
| unsigned int state() { return state_; } |
| |
| private: |
| friend struct DefaultSingletonTraits<XModifierStateWatcher>; |
| |
| XModifierStateWatcher() : state_(0) { } |
| |
| unsigned int state_; |
| |
| DISALLOW_COPY_AND_ASSIGN(XModifierStateWatcher); |
| }; |
| |
| #if defined(USE_XI2_MT) |
| // Detects if a touch event is a driver-generated 'special event'. |
| // A 'special event' is a touch event with maximum radius and pressure at |
| // location (0, 0). |
| // This needs to be done in a cleaner way: http://crbug.com/169256 |
| bool TouchEventIsGeneratedHack(const base::NativeEvent& native_event) { |
| XIDeviceEvent* event = |
| static_cast<XIDeviceEvent*>(native_event->xcookie.data); |
| CHECK(event->evtype == XI_TouchBegin || |
| event->evtype == XI_TouchUpdate || |
| event->evtype == XI_TouchEnd); |
| |
| // Force is normalized to [0, 1]. |
| if (ui::GetTouchForce(native_event) < 1.0f) |
| return false; |
| |
| if (ui::EventLocationFromNative(native_event) != gfx::Point()) |
| return false; |
| |
| // Radius is in pixels, and the valuator is the diameter in pixels. |
| double radius = ui::GetTouchRadiusX(native_event), min, max; |
| unsigned int deviceid = |
| static_cast<XIDeviceEvent*>(native_event->xcookie.data)->sourceid; |
| if (!ui::DeviceDataManager::GetInstance()->GetDataRange( |
| deviceid, ui::DeviceDataManager::DT_TOUCH_MAJOR, &min, &max)) { |
| return false; |
| } |
| |
| return radius * 2 == max; |
| } |
| #endif |
| |
| int GetEventFlagsFromXState(unsigned int state) { |
| int flags = 0; |
| if (state & ControlMask) |
| flags |= ui::EF_CONTROL_DOWN; |
| if (state & ShiftMask) |
| flags |= ui::EF_SHIFT_DOWN; |
| if (state & Mod1Mask) |
| flags |= ui::EF_ALT_DOWN; |
| if (state & LockMask) |
| flags |= ui::EF_CAPS_LOCK_DOWN; |
| if (state & Mod5Mask) |
| flags |= ui::EF_ALTGR_DOWN; |
| if (state & Button1Mask) |
| flags |= ui::EF_LEFT_MOUSE_BUTTON; |
| if (state & Button2Mask) |
| flags |= ui::EF_MIDDLE_MOUSE_BUTTON; |
| if (state & Button3Mask) |
| flags |= ui::EF_RIGHT_MOUSE_BUTTON; |
| return flags; |
| } |
| |
| // Get the event flag for the button in XButtonEvent. During a ButtonPress |
| // event, |state| in XButtonEvent does not include the button that has just been |
| // pressed. Instead |state| contains flags for the buttons (if any) that had |
| // already been pressed before the current button, and |button| stores the most |
| // current pressed button. So, if you press down left mouse button, and while |
| // pressing it down, press down the right mouse button, then for the latter |
| // event, |state| would have Button1Mask set but not Button3Mask, and |button| |
| // would be 3. |
| int GetEventFlagsForButton(int button) { |
| switch (button) { |
| case 1: |
| return ui::EF_LEFT_MOUSE_BUTTON; |
| case 2: |
| return ui::EF_MIDDLE_MOUSE_BUTTON; |
| case 3: |
| return ui::EF_RIGHT_MOUSE_BUTTON; |
| default: |
| return 0; |
| } |
| } |
| |
| int GetButtonMaskForX2Event(XIDeviceEvent* xievent) { |
| int buttonflags = 0; |
| for (int i = 0; i < 8 * xievent->buttons.mask_len; i++) { |
| if (XIMaskIsSet(xievent->buttons.mask, i)) { |
| int button = (xievent->sourceid == xievent->deviceid) ? |
| ui::DeviceDataManager::GetInstance()->GetMappedButton(i) : i; |
| buttonflags |= GetEventFlagsForButton(button); |
| } |
| } |
| return buttonflags; |
| } |
| |
| ui::EventType GetTouchEventType(const base::NativeEvent& native_event) { |
| XIDeviceEvent* event = |
| static_cast<XIDeviceEvent*>(native_event->xcookie.data); |
| #if defined(USE_XI2_MT) |
| switch(event->evtype) { |
| case XI_TouchBegin: |
| return TouchEventIsGeneratedHack(native_event) ? ui::ET_UNKNOWN : |
| ui::ET_TOUCH_PRESSED; |
| case XI_TouchUpdate: |
| return TouchEventIsGeneratedHack(native_event) ? ui::ET_UNKNOWN : |
| ui::ET_TOUCH_MOVED; |
| case XI_TouchEnd: |
| return TouchEventIsGeneratedHack(native_event) ? ui::ET_TOUCH_CANCELLED : |
| ui::ET_TOUCH_RELEASED; |
| } |
| #endif // defined(USE_XI2_MT) |
| |
| DCHECK(ui::TouchFactory::GetInstance()->IsTouchDevice(event->sourceid)); |
| switch (event->evtype) { |
| case XI_ButtonPress: |
| return ui::ET_TOUCH_PRESSED; |
| case XI_ButtonRelease: |
| return ui::ET_TOUCH_RELEASED; |
| case XI_Motion: |
| // Should not convert any emulated Motion event from touch device to |
| // touch event. |
| if (!(event->flags & XIPointerEmulated) && |
| GetButtonMaskForX2Event(event)) |
| return ui::ET_TOUCH_MOVED; |
| return ui::ET_UNKNOWN; |
| default: |
| NOTREACHED(); |
| } |
| return ui::ET_UNKNOWN; |
| } |
| |
| double GetTouchParamFromXEvent(XEvent* xev, |
| ui::DeviceDataManager::DataType val, |
| double default_value) { |
| ui::DeviceDataManager::GetInstance()->GetEventData( |
| *xev, val, &default_value); |
| return default_value; |
| } |
| |
| Atom GetNoopEventAtom() { |
| return XInternAtom(gfx::GetXDisplay(), "noop", False); |
| } |
| |
| } // namespace |
| |
| namespace ui { |
| |
| void UpdateDeviceList() { |
| XDisplay* display = gfx::GetXDisplay(); |
| DeviceListCacheX::GetInstance()->UpdateDeviceList(display); |
| TouchFactory::GetInstance()->UpdateDeviceList(display); |
| DeviceDataManager::GetInstance()->UpdateDeviceList(display); |
| } |
| |
| EventType EventTypeFromNative(const base::NativeEvent& native_event) { |
| switch (native_event->type) { |
| case KeyPress: |
| return ET_KEY_PRESSED; |
| case KeyRelease: |
| return ET_KEY_RELEASED; |
| case ButtonPress: |
| if (static_cast<int>(native_event->xbutton.button) >= kMinWheelButton && |
| static_cast<int>(native_event->xbutton.button) <= kMaxWheelButton) |
| return ET_MOUSEWHEEL; |
| return ET_MOUSE_PRESSED; |
| case ButtonRelease: |
| // Drop wheel events; we should've already scrolled on the press. |
| if (static_cast<int>(native_event->xbutton.button) >= kMinWheelButton && |
| static_cast<int>(native_event->xbutton.button) <= kMaxWheelButton) |
| return ET_UNKNOWN; |
| return ET_MOUSE_RELEASED; |
| case MotionNotify: |
| if (native_event->xmotion.state & |
| (Button1Mask | Button2Mask | Button3Mask)) |
| return ET_MOUSE_DRAGGED; |
| return ET_MOUSE_MOVED; |
| case EnterNotify: |
| // The standard on Windows is to send a MouseMove event when the mouse |
| // first enters a window instead of sending a special mouse enter event. |
| // To be consistent we follow the same style. |
| return ET_MOUSE_MOVED; |
| case LeaveNotify: |
| return ET_MOUSE_EXITED; |
| case GenericEvent: { |
| TouchFactory* factory = TouchFactory::GetInstance(); |
| if (!factory->ShouldProcessXI2Event(native_event)) |
| return ET_UNKNOWN; |
| |
| XIDeviceEvent* xievent = |
| static_cast<XIDeviceEvent*>(native_event->xcookie.data); |
| |
| if (factory->IsTouchDevice(xievent->sourceid)) |
| return GetTouchEventType(native_event); |
| |
| switch (xievent->evtype) { |
| case XI_ButtonPress: { |
| int button = EventButtonFromNative(native_event); |
| if (button >= kMinWheelButton && button <= kMaxWheelButton) |
| return ET_MOUSEWHEEL; |
| return ET_MOUSE_PRESSED; |
| } |
| case XI_ButtonRelease: { |
| int button = EventButtonFromNative(native_event); |
| // Drop wheel events; we should've already scrolled on the press. |
| if (button >= kMinWheelButton && button <= kMaxWheelButton) |
| return ET_UNKNOWN; |
| return ET_MOUSE_RELEASED; |
| } |
| case XI_Motion: { |
| bool is_cancel; |
| if (GetFlingData(native_event, NULL, NULL, NULL, NULL, &is_cancel)) { |
| return is_cancel ? ET_SCROLL_FLING_CANCEL : ET_SCROLL_FLING_START; |
| } else if (DeviceDataManager::GetInstance()->IsScrollEvent( |
| native_event)) { |
| return IsTouchpadEvent(native_event) ? ET_SCROLL : ET_MOUSEWHEEL; |
| } else if (DeviceDataManager::GetInstance()->IsCMTMetricsEvent( |
| native_event)) { |
| return ET_UMA_DATA; |
| } else if (GetButtonMaskForX2Event(xievent)) { |
| return ET_MOUSE_DRAGGED; |
| } else { |
| return ET_MOUSE_MOVED; |
| } |
| } |
| } |
| } |
| default: |
| break; |
| } |
| return ET_UNKNOWN; |
| } |
| |
| int EventFlagsFromNative(const base::NativeEvent& native_event) { |
| switch (native_event->type) { |
| case KeyPress: |
| case KeyRelease: { |
| XModifierStateWatcher::GetInstance()->UpdateStateFromEvent(native_event); |
| return GetEventFlagsFromXState(native_event->xkey.state); |
| } |
| case ButtonPress: |
| case ButtonRelease: { |
| int flags = GetEventFlagsFromXState(native_event->xbutton.state); |
| const EventType type = EventTypeFromNative(native_event); |
| if (type == ET_MOUSE_PRESSED || type == ET_MOUSE_RELEASED) |
| flags |= GetEventFlagsForButton(native_event->xbutton.button); |
| return flags; |
| } |
| case MotionNotify: |
| return GetEventFlagsFromXState(native_event->xmotion.state); |
| case GenericEvent: { |
| XIDeviceEvent* xievent = |
| static_cast<XIDeviceEvent*>(native_event->xcookie.data); |
| |
| switch (xievent->evtype) { |
| #if defined(USE_XI2_MT) |
| case XI_TouchBegin: |
| case XI_TouchUpdate: |
| case XI_TouchEnd: |
| return GetButtonMaskForX2Event(xievent) | |
| GetEventFlagsFromXState(xievent->mods.effective) | |
| GetEventFlagsFromXState( |
| XModifierStateWatcher::GetInstance()->state()); |
| break; |
| #endif |
| case XI_ButtonPress: |
| case XI_ButtonRelease: { |
| const bool touch = |
| TouchFactory::GetInstance()->IsTouchDevice(xievent->sourceid); |
| int flags = GetButtonMaskForX2Event(xievent) | |
| GetEventFlagsFromXState(xievent->mods.effective); |
| if (touch) { |
| flags |= GetEventFlagsFromXState( |
| XModifierStateWatcher::GetInstance()->state()); |
| } |
| |
| const EventType type = EventTypeFromNative(native_event); |
| int button = EventButtonFromNative(native_event); |
| if ((type == ET_MOUSE_PRESSED || type == ET_MOUSE_RELEASED) && !touch) |
| flags |= GetEventFlagsForButton(button); |
| return flags; |
| } |
| case XI_Motion: |
| return GetButtonMaskForX2Event(xievent) | |
| GetEventFlagsFromXState(xievent->mods.effective); |
| } |
| } |
| } |
| return 0; |
| } |
| |
| base::TimeDelta EventTimeFromNative(const base::NativeEvent& native_event) { |
| switch(native_event->type) { |
| case KeyPress: |
| case KeyRelease: |
| return base::TimeDelta::FromMilliseconds(native_event->xkey.time); |
| case ButtonPress: |
| case ButtonRelease: |
| return base::TimeDelta::FromMilliseconds(native_event->xbutton.time); |
| break; |
| case MotionNotify: |
| return base::TimeDelta::FromMilliseconds(native_event->xmotion.time); |
| break; |
| case EnterNotify: |
| case LeaveNotify: |
| return base::TimeDelta::FromMilliseconds(native_event->xcrossing.time); |
| break; |
| case GenericEvent: { |
| double start, end; |
| double touch_timestamp; |
| if (GetGestureTimes(native_event, &start, &end)) { |
| // If the driver supports gesture times, use them. |
| return base::TimeDelta::FromMicroseconds(end * 1000000); |
| } else if (DeviceDataManager::GetInstance()->GetEventData(*native_event, |
| DeviceDataManager::DT_TOUCH_RAW_TIMESTAMP, &touch_timestamp)) { |
| return base::TimeDelta::FromMicroseconds(touch_timestamp * 1000000); |
| } else { |
| XIDeviceEvent* xide = |
| static_cast<XIDeviceEvent*>(native_event->xcookie.data); |
| return base::TimeDelta::FromMilliseconds(xide->time); |
| } |
| break; |
| } |
| } |
| NOTREACHED(); |
| return base::TimeDelta(); |
| } |
| |
| gfx::Point EventLocationFromNative(const base::NativeEvent& native_event) { |
| switch (native_event->type) { |
| case EnterNotify: |
| case LeaveNotify: |
| return gfx::Point(native_event->xcrossing.x, native_event->xcrossing.y); |
| case ButtonPress: |
| case ButtonRelease: |
| return gfx::Point(native_event->xbutton.x, native_event->xbutton.y); |
| case MotionNotify: |
| return gfx::Point(native_event->xmotion.x, native_event->xmotion.y); |
| case GenericEvent: { |
| XIDeviceEvent* xievent = |
| static_cast<XIDeviceEvent*>(native_event->xcookie.data); |
| return gfx::Point(round(xievent->event_x), |
| round(xievent->event_y)); |
| } |
| } |
| return gfx::Point(); |
| } |
| |
| gfx::Point EventSystemLocationFromNative( |
| const base::NativeEvent& native_event) { |
| switch (native_event->type) { |
| case EnterNotify: |
| case LeaveNotify: { |
| return gfx::Point(native_event->xcrossing.x_root, |
| native_event->xcrossing.y_root); |
| } |
| case ButtonPress: |
| case ButtonRelease: { |
| return gfx::Point(native_event->xbutton.x_root, |
| native_event->xbutton.y_root); |
| } |
| case MotionNotify: { |
| return gfx::Point(native_event->xmotion.x_root, |
| native_event->xmotion.y_root); |
| } |
| case GenericEvent: { |
| XIDeviceEvent* xievent = |
| static_cast<XIDeviceEvent*>(native_event->xcookie.data); |
| return gfx::Point(xievent->root_x, xievent->root_y); |
| } |
| } |
| |
| return gfx::Point(); |
| } |
| |
| int EventButtonFromNative(const base::NativeEvent& native_event) { |
| CHECK_EQ(GenericEvent, native_event->type); |
| XIDeviceEvent* xievent = |
| static_cast<XIDeviceEvent*>(native_event->xcookie.data); |
| int button = xievent->detail; |
| |
| return (xievent->sourceid == xievent->deviceid) ? |
| DeviceDataManager::GetInstance()->GetMappedButton(button) : button; |
| } |
| |
| KeyboardCode KeyboardCodeFromNative(const base::NativeEvent& native_event) { |
| return KeyboardCodeFromXKeyEvent(native_event); |
| } |
| |
| const char* CodeFromNative(const base::NativeEvent& native_event) { |
| return CodeFromXEvent(native_event); |
| } |
| |
| bool IsMouseEvent(const base::NativeEvent& native_event) { |
| if (native_event->type == EnterNotify || |
| native_event->type == LeaveNotify || |
| native_event->type == ButtonPress || |
| native_event->type == ButtonRelease || |
| native_event->type == MotionNotify) |
| return true; |
| if (native_event->type == GenericEvent) { |
| XIDeviceEvent* xievent = |
| static_cast<XIDeviceEvent*>(native_event->xcookie.data); |
| return xievent->evtype == XI_ButtonPress || |
| xievent->evtype == XI_ButtonRelease || |
| xievent->evtype == XI_Motion; |
| } |
| return false; |
| } |
| |
| int GetChangedMouseButtonFlagsFromNative( |
| const base::NativeEvent& native_event) { |
| switch (native_event->type) { |
| case ButtonPress: |
| case ButtonRelease: |
| return GetEventFlagsFromXState(native_event->xbutton.state); |
| case GenericEvent: { |
| XIDeviceEvent* xievent = |
| static_cast<XIDeviceEvent*>(native_event->xcookie.data); |
| switch (xievent->evtype) { |
| case XI_ButtonPress: |
| case XI_ButtonRelease: |
| return GetEventFlagsForButton(EventButtonFromNative(native_event)); |
| default: |
| break; |
| } |
| } |
| default: |
| break; |
| } |
| return 0; |
| } |
| |
| gfx::Vector2d GetMouseWheelOffset(const base::NativeEvent& native_event) { |
| float x_offset, y_offset; |
| if (GetScrollOffsets( |
| native_event, &x_offset, &y_offset, NULL, NULL, NULL)) { |
| return gfx::Vector2d(static_cast<int>(x_offset), |
| static_cast<int>(y_offset)); |
| } |
| |
| int button = native_event->type == GenericEvent ? |
| EventButtonFromNative(native_event) : native_event->xbutton.button; |
| |
| switch (button) { |
| case 4: |
| return gfx::Vector2d(0, kWheelScrollAmount); |
| case 5: |
| return gfx::Vector2d(0, -kWheelScrollAmount); |
| default: |
| // TODO(derat): Do something for horizontal scrolls (buttons 6 and 7)? |
| return gfx::Vector2d(); |
| } |
| } |
| |
| void ClearTouchIdIfReleased(const base::NativeEvent& xev) { |
| ui::EventType type = ui::EventTypeFromNative(xev); |
| if (type == ui::ET_TOUCH_CANCELLED || |
| type == ui::ET_TOUCH_RELEASED) { |
| ui::TouchFactory* factory = ui::TouchFactory::GetInstance(); |
| ui::DeviceDataManager* manager = ui::DeviceDataManager::GetInstance(); |
| double tracking_id; |
| if (manager->GetEventData( |
| *xev, ui::DeviceDataManager::DT_TOUCH_TRACKING_ID, &tracking_id)) { |
| factory->ReleaseSlotForTrackingID(tracking_id); |
| } |
| } |
| } |
| |
| int GetTouchId(const base::NativeEvent& xev) { |
| double slot = 0; |
| ui::DeviceDataManager* manager = ui::DeviceDataManager::GetInstance(); |
| double tracking_id; |
| if (!manager->GetEventData( |
| *xev, ui::DeviceDataManager::DT_TOUCH_TRACKING_ID, &tracking_id)) { |
| LOG(ERROR) << "Could not get the tracking ID for the event. Using 0."; |
| } else { |
| ui::TouchFactory* factory = ui::TouchFactory::GetInstance(); |
| slot = factory->GetSlotForTrackingID(tracking_id); |
| } |
| return slot; |
| } |
| |
| float GetTouchRadiusX(const base::NativeEvent& native_event) { |
| return GetTouchParamFromXEvent(native_event, |
| ui::DeviceDataManager::DT_TOUCH_MAJOR, 0.0) / 2.0; |
| } |
| |
| float GetTouchRadiusY(const base::NativeEvent& native_event) { |
| return GetTouchParamFromXEvent(native_event, |
| ui::DeviceDataManager::DT_TOUCH_MINOR, 0.0) / 2.0; |
| } |
| |
| float GetTouchAngle(const base::NativeEvent& native_event) { |
| return GetTouchParamFromXEvent(native_event, |
| ui::DeviceDataManager::DT_TOUCH_ORIENTATION, 0.0) / 2.0; |
| } |
| |
| float GetTouchForce(const base::NativeEvent& native_event) { |
| double force = 0.0; |
| force = GetTouchParamFromXEvent(native_event, |
| ui::DeviceDataManager::DT_TOUCH_PRESSURE, 0.0); |
| unsigned int deviceid = |
| static_cast<XIDeviceEvent*>(native_event->xcookie.data)->sourceid; |
| // Force is normalized to fall into [0, 1] |
| if (!ui::DeviceDataManager::GetInstance()->NormalizeData( |
| deviceid, ui::DeviceDataManager::DT_TOUCH_PRESSURE, &force)) |
| force = 0.0; |
| return force; |
| } |
| |
| bool GetScrollOffsets(const base::NativeEvent& native_event, |
| float* x_offset, |
| float* y_offset, |
| float* x_offset_ordinal, |
| float* y_offset_ordinal, |
| int* finger_count) { |
| if (!DeviceDataManager::GetInstance()->IsScrollEvent(native_event)) |
| return false; |
| |
| // Temp values to prevent passing NULLs to DeviceDataManager. |
| float x_offset_, y_offset_; |
| float x_offset_ordinal_, y_offset_ordinal_; |
| int finger_count_; |
| if (!x_offset) |
| x_offset = &x_offset_; |
| if (!y_offset) |
| y_offset = &y_offset_; |
| if (!x_offset_ordinal) |
| x_offset_ordinal = &x_offset_ordinal_; |
| if (!y_offset_ordinal) |
| y_offset_ordinal = &y_offset_ordinal_; |
| if (!finger_count) |
| finger_count = &finger_count_; |
| |
| DeviceDataManager::GetInstance()->GetScrollOffsets( |
| native_event, |
| x_offset, y_offset, |
| x_offset_ordinal, y_offset_ordinal, |
| finger_count); |
| return true; |
| } |
| |
| bool GetFlingData(const base::NativeEvent& native_event, |
| float* vx, |
| float* vy, |
| float* vx_ordinal, |
| float* vy_ordinal, |
| bool* is_cancel) { |
| if (!DeviceDataManager::GetInstance()->IsFlingEvent(native_event)) |
| return false; |
| |
| float vx_, vy_; |
| float vx_ordinal_, vy_ordinal_; |
| bool is_cancel_; |
| if (!vx) |
| vx = &vx_; |
| if (!vy) |
| vy = &vy_; |
| if (!vx_ordinal) |
| vx_ordinal = &vx_ordinal_; |
| if (!vy_ordinal) |
| vy_ordinal = &vy_ordinal_; |
| if (!is_cancel) |
| is_cancel = &is_cancel_; |
| |
| DeviceDataManager::GetInstance()->GetFlingData( |
| native_event, vx, vy, vx_ordinal, vy_ordinal, is_cancel); |
| return true; |
| } |
| |
| bool GetGestureTimes(const base::NativeEvent& native_event, |
| double* start_time, |
| double* end_time) { |
| if (!DeviceDataManager::GetInstance()->HasGestureTimes(native_event)) |
| return false; |
| |
| double start_time_, end_time_; |
| if (!start_time) |
| start_time = &start_time_; |
| if (!end_time) |
| end_time = &end_time_; |
| |
| DeviceDataManager::GetInstance()->GetGestureTimes( |
| native_event, start_time, end_time); |
| return true; |
| } |
| |
| void SetNaturalScroll(bool enabled) { |
| DeviceDataManager::GetInstance()->set_natural_scroll_enabled(enabled); |
| } |
| |
| bool IsNaturalScrollEnabled() { |
| return DeviceDataManager::GetInstance()->natural_scroll_enabled(); |
| } |
| |
| bool IsTouchpadEvent(const base::NativeEvent& event) { |
| return DeviceDataManager::GetInstance()->IsTouchpadXInputEvent(event); |
| } |
| |
| bool IsNoopEvent(const base::NativeEvent& event) { |
| return (event->type == ClientMessage && |
| event->xclient.message_type == GetNoopEventAtom()); |
| } |
| |
| base::NativeEvent CreateNoopEvent() { |
| static XEvent* noop = NULL; |
| if (!noop) { |
| noop = new XEvent(); |
| memset(noop, 0, sizeof(XEvent)); |
| noop->xclient.type = ClientMessage; |
| noop->xclient.window = None; |
| noop->xclient.format = 8; |
| DCHECK(!noop->xclient.display); |
| } |
| // Make sure we use atom from current xdisplay, which may |
| // change during the test. |
| noop->xclient.message_type = GetNoopEventAtom(); |
| return noop; |
| } |
| |
| } // namespace ui |
