| // Copyright (c) 2016 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/x/events_x_utils.h" |
| |
| #include <stddef.h> |
| #include <string.h> |
| #include <cmath> |
| |
| #include "base/logging.h" |
| #include "base/macros.h" |
| #include "base/memory/singleton.h" |
| #include "base/metrics/histogram_macros.h" |
| #include "build/build_config.h" |
| #include "ui/display/display.h" |
| #include "ui/display/screen.h" |
| #include "ui/events/base_event_utils.h" |
| #include "ui/events/devices/x11/device_data_manager_x11.h" |
| #include "ui/events/devices/x11/device_list_cache_x11.h" |
| #include "ui/events/devices/x11/touch_factory_x11.h" |
| #include "ui/events/keycodes/keyboard_code_conversion_x.h" |
| #include "ui/gfx/geometry/point.h" |
| #include "ui/gfx/geometry/rect.h" |
| #include "ui/gfx/x/x11.h" |
| #include "ui/gfx/x/x11_atom_cache.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 base::Singleton<XModifierStateWatcher>::get(); |
| } |
| |
| int StateFromKeyboardCode(ui::KeyboardCode keyboard_code) { |
| switch (keyboard_code) { |
| case ui::VKEY_CONTROL: |
| return ControlMask; |
| case ui::VKEY_SHIFT: |
| return ShiftMask; |
| case ui::VKEY_MENU: |
| return Mod1Mask; |
| case ui::VKEY_CAPITAL: |
| return LockMask; |
| default: |
| return 0; |
| } |
| } |
| |
| void UpdateStateFromXEvent(const XEvent& xev) { |
| ui::KeyboardCode keyboard_code = ui::KeyboardCodeFromXKeyEvent(&xev); |
| unsigned int mask = StateFromKeyboardCode(keyboard_code); |
| // 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. |
| switch (xev.type) { |
| case KeyPress: |
| state_ = xev.xkey.state | mask; |
| break; |
| case KeyRelease: |
| state_ = xev.xkey.state & ~mask; |
| break; |
| case GenericEvent: { |
| XIDeviceEvent* xievent = static_cast<XIDeviceEvent*>(xev.xcookie.data); |
| switch (xievent->evtype) { |
| case XI_KeyPress: |
| state_ = xievent->mods.effective |= mask; |
| break; |
| case XI_KeyRelease: |
| state_ = xievent->mods.effective &= ~mask; |
| break; |
| default: |
| NOTREACHED(); |
| break; |
| } |
| break; |
| } |
| default: |
| NOTREACHED(); |
| break; |
| } |
| } |
| |
| // 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 base::DefaultSingletonTraits<XModifierStateWatcher>; |
| |
| XModifierStateWatcher() : state_(0) {} |
| |
| unsigned int state_; |
| |
| DISALLOW_COPY_AND_ASSIGN(XModifierStateWatcher); |
| }; |
| |
| // 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 XEvent& xev) { |
| XIDeviceEvent* event = static_cast<XIDeviceEvent*>(xev.xcookie.data); |
| CHECK(event->evtype == XI_TouchBegin || event->evtype == XI_TouchUpdate || |
| event->evtype == XI_TouchEnd); |
| |
| // Force is normalized to [0, 1]. |
| if (ui::GetTouchForceFromXEvent(xev) < 1.0f) |
| return false; |
| |
| if (ui::EventLocationFromXEvent(xev) != gfx::Point()) |
| return false; |
| |
| // Radius is in pixels, and the valuator is the diameter in pixels. |
| double radius = ui::GetTouchRadiusXFromXEvent(xev), min, max; |
| unsigned int deviceid = |
| static_cast<XIDeviceEvent*>(xev.xcookie.data)->sourceid; |
| if (!ui::DeviceDataManagerX11::GetInstance()->GetDataRange( |
| deviceid, ui::DeviceDataManagerX11::DT_TOUCH_MAJOR, &min, &max)) { |
| return false; |
| } |
| |
| return radius * 2 == max; |
| } |
| |
| int GetEventFlagsFromXState(unsigned int state) { |
| int flags = 0; |
| if (state & ShiftMask) |
| flags |= ui::EF_SHIFT_DOWN; |
| if (state & LockMask) |
| flags |= ui::EF_CAPS_LOCK_ON; |
| if (state & ControlMask) |
| flags |= ui::EF_CONTROL_DOWN; |
| if (state & Mod1Mask) |
| flags |= ui::EF_ALT_DOWN; |
| if (state & Mod2Mask) |
| flags |= ui::EF_NUM_LOCK_ON; |
| if (state & Mod3Mask) |
| flags |= ui::EF_MOD3_DOWN; |
| if (state & Mod4Mask) |
| flags |= ui::EF_COMMAND_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; |
| // There are no masks for EF_BACK_MOUSE_BUTTON and |
| // EF_FORWARD_MOUSE_BUTTON. |
| return flags; |
| } |
| |
| int GetEventFlagsFromXKeyEvent(const XEvent& xev) { |
| DCHECK(xev.type == KeyPress || xev.type == KeyRelease); |
| |
| #if defined(OS_CHROMEOS) |
| const int ime_fabricated_flag = 0; |
| #else |
| // XIM fabricates key events for the character compositions by XK_Multi_key. |
| // For example, when a user hits XK_Multi_key, XK_apostrophe, and XK_e in |
| // order to input "é", then XIM generates a key event with keycode=0 and |
| // state=0 for the composition, and the sequence of X11 key events will be |
| // XK_Multi_key, XK_apostrophe, **NoSymbol**, and XK_e. If the user used |
| // shift key and/or caps lock key, state can be ShiftMask, LockMask or both. |
| // |
| // We have to send these fabricated key events to XIM so it can correctly |
| // handle the character compositions. |
| const unsigned int shift_lock_mask = ShiftMask | LockMask; |
| const bool fabricated_by_xim = |
| xev.xkey.keycode == 0 && (xev.xkey.state & ~shift_lock_mask) == 0; |
| const int ime_fabricated_flag = |
| fabricated_by_xim ? ui::EF_IME_FABRICATED_KEY : 0; |
| #endif |
| |
| return GetEventFlagsFromXState(xev.xkey.state) | |
| (xev.xkey.send_event ? ui::EF_FINAL : 0) | ime_fabricated_flag; |
| } |
| |
| int GetEventFlagsFromXGenericEvent(const XEvent& xev) { |
| DCHECK(xev.type == GenericEvent); |
| XIDeviceEvent* xievent = static_cast<XIDeviceEvent*>(xev.xcookie.data); |
| DCHECK((xievent->evtype == XI_KeyPress) || |
| (xievent->evtype == XI_KeyRelease)); |
| return GetEventFlagsFromXState(xievent->mods.effective) | |
| (xev.xkey.send_event ? ui::EF_FINAL : 0); |
| } |
| |
| // 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; |
| case 8: |
| return ui::EF_BACK_MOUSE_BUTTON; |
| case 9: |
| return ui::EF_FORWARD_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::DeviceDataManagerX11::GetInstance()->GetMappedButton(i) |
| : i; |
| buttonflags |= GetEventFlagsForButton(button); |
| } |
| } |
| return buttonflags; |
| } |
| |
| ui::EventType GetTouchEventType(const XEvent& xev) { |
| XIDeviceEvent* event = static_cast<XIDeviceEvent*>(xev.xcookie.data); |
| switch (event->evtype) { |
| case XI_TouchBegin: |
| return TouchEventIsGeneratedHack(xev) ? ui::ET_UNKNOWN |
| : ui::ET_TOUCH_PRESSED; |
| case XI_TouchUpdate: |
| return TouchEventIsGeneratedHack(xev) ? ui::ET_UNKNOWN |
| : ui::ET_TOUCH_MOVED; |
| case XI_TouchEnd: |
| return TouchEventIsGeneratedHack(xev) ? ui::ET_TOUCH_CANCELLED |
| : ui::ET_TOUCH_RELEASED; |
| } |
| |
| 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; |
| case XI_DeviceChanged: |
| // This can happen when --touch-devices flag is used. |
| return ui::ET_UNKNOWN; |
| case XI_Leave: |
| case XI_Enter: |
| case XI_FocusIn: |
| case XI_FocusOut: |
| // These may be handled by the PlatformEventDispatcher directly. |
| return ui::ET_UNKNOWN; |
| default: |
| NOTREACHED(); |
| } |
| return ui::ET_UNKNOWN; |
| } |
| |
| double GetTouchParamFromXEvent(const XEvent& xev, |
| ui::DeviceDataManagerX11::DataType val, |
| double default_value) { |
| ui::DeviceDataManagerX11::GetInstance()->GetEventData(xev, val, |
| &default_value); |
| return default_value; |
| } |
| |
| void ScaleTouchRadius(const XEvent& xev, double* radius) { |
| DCHECK_EQ(GenericEvent, xev.type); |
| XIDeviceEvent* xiev = static_cast<XIDeviceEvent*>(xev.xcookie.data); |
| ui::DeviceDataManagerX11::GetInstance()->ApplyTouchRadiusScale(xiev->sourceid, |
| radius); |
| } |
| |
| bool GetGestureTimes(const XEvent& xev, double* start_time, double* end_time) { |
| if (!ui::DeviceDataManagerX11::GetInstance()->HasGestureTimes(xev)) |
| return false; |
| |
| double start_time_, end_time_; |
| if (!start_time) |
| start_time = &start_time_; |
| if (!end_time) |
| end_time = &end_time_; |
| |
| ui::DeviceDataManagerX11::GetInstance()->GetGestureTimes(xev, start_time, |
| end_time); |
| return true; |
| } |
| |
| int64_t g_last_seen_timestamp_ms = 0; |
| int64_t g_rollover_ms = 0; |
| |
| // Takes Xlib Time and returns a time delta that is immune to timer rollover. |
| // This function is not thread safe as we do not use a lock. |
| base::TimeTicks TimeTicksFromXEventTime(Time timestamp) { |
| int64_t timestamp64 = timestamp; |
| |
| if (!timestamp) |
| return ui::EventTimeForNow(); |
| |
| // If this is the first event that we get, assume the time stamp roll-over |
| // might have happened before the process was started. |
| // Register a rollover if the distance between last timestamp and current one |
| // is larger than half the width. This avoids false rollovers even in a case |
| // where X server delivers reasonably close events out-of-order. |
| bool had_recent_rollover = |
| !g_last_seen_timestamp_ms || |
| g_last_seen_timestamp_ms - timestamp64 > (UINT32_MAX >> 1); |
| |
| g_last_seen_timestamp_ms = timestamp64; |
| if (!had_recent_rollover) |
| return base::TimeTicks() + |
| base::TimeDelta::FromMilliseconds(g_rollover_ms + timestamp); |
| |
| DCHECK(timestamp64 <= UINT32_MAX) |
| << "X11 Time does not roll over 32 bit, the below logic is likely wrong"; |
| |
| base::TimeTicks now_ticks = ui::EventTimeForNow(); |
| int64_t now_ms = (now_ticks - base::TimeTicks()).InMilliseconds(); |
| |
| g_rollover_ms = now_ms & ~static_cast<int64_t>(UINT32_MAX); |
| uint32_t delta = static_cast<uint32_t>(now_ms - timestamp); |
| return base::TimeTicks() + base::TimeDelta::FromMilliseconds(now_ms - delta); |
| } |
| |
| } // namespace |
| |
| namespace ui { |
| |
| EventType EventTypeFromXEvent(const XEvent& xev) { |
| // Allow the DeviceDataManager to block the event. If blocked return |
| // ET_UNKNOWN as the type so this event will not be further processed. |
| // NOTE: During some events unittests there is no device data manager. |
| if (DeviceDataManager::HasInstance() && |
| DeviceDataManagerX11::GetInstance()->IsEventBlocked(xev)) { |
| return ET_UNKNOWN; |
| } |
| |
| switch (xev.type) { |
| case KeyPress: |
| return ET_KEY_PRESSED; |
| case KeyRelease: |
| return ET_KEY_RELEASED; |
| case ButtonPress: |
| if (static_cast<int>(xev.xbutton.button) >= kMinWheelButton && |
| static_cast<int>(xev.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>(xev.xbutton.button) >= kMinWheelButton && |
| static_cast<int>(xev.xbutton.button) <= kMaxWheelButton) |
| return ET_UNKNOWN; |
| return ET_MOUSE_RELEASED; |
| case MotionNotify: |
| if (xev.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(const_cast<XEvent*>(&xev))) |
| return ET_UNKNOWN; |
| |
| XIDeviceEvent* xievent = static_cast<XIDeviceEvent*>(xev.xcookie.data); |
| |
| // This check works only for master and floating slave devices. That is |
| // why it is necessary to check for the XI_Touch* events in the following |
| // switch statement to account for attached-slave touchscreens. |
| if (factory->IsTouchDevice(xievent->sourceid)) |
| return GetTouchEventType(xev); |
| |
| switch (xievent->evtype) { |
| case XI_TouchBegin: |
| return ui::ET_TOUCH_PRESSED; |
| case XI_TouchUpdate: |
| return ui::ET_TOUCH_MOVED; |
| case XI_TouchEnd: |
| return ui::ET_TOUCH_RELEASED; |
| case XI_ButtonPress: { |
| int button = EventButtonFromXEvent(xev); |
| if (button >= kMinWheelButton && button <= kMaxWheelButton) |
| return ET_MOUSEWHEEL; |
| return ET_MOUSE_PRESSED; |
| } |
| case XI_ButtonRelease: { |
| int button = EventButtonFromXEvent(xev); |
| // 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; |
| DeviceDataManagerX11* devices = DeviceDataManagerX11::GetInstance(); |
| if (GetFlingDataFromXEvent(xev, NULL, NULL, NULL, NULL, &is_cancel)) |
| return is_cancel ? ET_SCROLL_FLING_CANCEL : ET_SCROLL_FLING_START; |
| if (devices->IsScrollEvent(xev)) { |
| return devices->IsTouchpadXInputEvent(xev) ? ET_SCROLL |
| : ET_MOUSEWHEEL; |
| } |
| if (devices->GetScrollClassEventDetail(xev) != |
| SCROLL_TYPE_NO_SCROLL) { |
| return devices->IsTouchpadXInputEvent(xev) ? ET_SCROLL |
| : ET_MOUSEWHEEL; |
| } |
| if (devices->IsCMTMetricsEvent(xev)) |
| return ET_UMA_DATA; |
| if (GetButtonMaskForX2Event(xievent)) |
| return ET_MOUSE_DRAGGED; |
| if (DeviceDataManagerX11::GetInstance()->HasEventData( |
| xievent, DeviceDataManagerX11::DT_CMT_SCROLL_X) || |
| DeviceDataManagerX11::GetInstance()->HasEventData( |
| xievent, DeviceDataManagerX11::DT_CMT_SCROLL_Y)) { |
| // Don't produce mouse move events for mousewheel scrolls. |
| return ET_UNKNOWN; |
| } |
| |
| return ET_MOUSE_MOVED; |
| } |
| case XI_KeyPress: |
| return ET_KEY_PRESSED; |
| case XI_KeyRelease: |
| return ET_KEY_RELEASED; |
| } |
| } |
| default: |
| break; |
| } |
| return ET_UNKNOWN; |
| } |
| |
| int EventFlagsFromXEvent(const XEvent& xev) { |
| switch (xev.type) { |
| case KeyPress: |
| case KeyRelease: { |
| XModifierStateWatcher::GetInstance()->UpdateStateFromXEvent(xev); |
| return GetEventFlagsFromXKeyEvent(xev); |
| } |
| case ButtonPress: |
| case ButtonRelease: { |
| int flags = GetEventFlagsFromXState(xev.xbutton.state); |
| const EventType type = EventTypeFromXEvent(xev); |
| if (type == ET_MOUSE_PRESSED || type == ET_MOUSE_RELEASED) |
| flags |= GetEventFlagsForButton(xev.xbutton.button); |
| return flags; |
| } |
| case EnterNotify: |
| // EnterNotify creates ET_MOUSE_MOVED. Mark as synthesized as this is not |
| // a real mouse move event. |
| return GetEventFlagsFromXState(xev.xcrossing.state) | EF_IS_SYNTHESIZED; |
| case LeaveNotify: |
| return GetEventFlagsFromXState(xev.xcrossing.state); |
| case MotionNotify: |
| return GetEventFlagsFromXState(xev.xmotion.state); |
| case GenericEvent: { |
| XIDeviceEvent* xievent = static_cast<XIDeviceEvent*>(xev.xcookie.data); |
| |
| switch (xievent->evtype) { |
| case XI_TouchBegin: |
| case XI_TouchUpdate: |
| case XI_TouchEnd: |
| return GetButtonMaskForX2Event(xievent) | |
| GetEventFlagsFromXState(xievent->mods.effective) | |
| GetEventFlagsFromXState( |
| XModifierStateWatcher::GetInstance()->state()); |
| break; |
| 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 = EventTypeFromXEvent(xev); |
| int button = EventButtonFromXEvent(xev); |
| 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); |
| case XI_KeyPress: |
| case XI_KeyRelease: { |
| XModifierStateWatcher::GetInstance()->UpdateStateFromXEvent(xev); |
| return GetEventFlagsFromXGenericEvent(xev); |
| } |
| } |
| } |
| } |
| return 0; |
| } |
| |
| base::TimeTicks EventTimeFromXEvent(const XEvent& xev) { |
| switch (xev.type) { |
| case KeyPress: |
| case KeyRelease: |
| return TimeTicksFromXEventTime(xev.xkey.time); |
| case ButtonPress: |
| case ButtonRelease: |
| return TimeTicksFromXEventTime(xev.xbutton.time); |
| break; |
| case MotionNotify: |
| return TimeTicksFromXEventTime(xev.xmotion.time); |
| break; |
| case EnterNotify: |
| case LeaveNotify: |
| return TimeTicksFromXEventTime(xev.xcrossing.time); |
| break; |
| case GenericEvent: { |
| double start, end; |
| double touch_timestamp; |
| if (GetGestureTimes(xev, &start, &end)) { |
| // If the driver supports gesture times, use them. |
| return ui::EventTimeStampFromSeconds(end); |
| } else if (DeviceDataManagerX11::GetInstance()->GetEventData( |
| xev, DeviceDataManagerX11::DT_TOUCH_RAW_TIMESTAMP, |
| &touch_timestamp)) { |
| return ui::EventTimeStampFromSeconds(touch_timestamp); |
| } else { |
| XIDeviceEvent* xide = static_cast<XIDeviceEvent*>(xev.xcookie.data); |
| return TimeTicksFromXEventTime(xide->time); |
| } |
| break; |
| } |
| } |
| NOTREACHED(); |
| return base::TimeTicks(); |
| } |
| |
| gfx::Point EventLocationFromXEvent(const XEvent& xev) { |
| switch (xev.type) { |
| case EnterNotify: |
| case LeaveNotify: |
| return gfx::Point(xev.xcrossing.x, xev.xcrossing.y); |
| case ButtonPress: |
| case ButtonRelease: |
| return gfx::Point(xev.xbutton.x, xev.xbutton.y); |
| case MotionNotify: |
| return gfx::Point(xev.xmotion.x, xev.xmotion.y); |
| case GenericEvent: { |
| XIDeviceEvent* xievent = static_cast<XIDeviceEvent*>(xev.xcookie.data); |
| float x = xievent->event_x; |
| float y = xievent->event_y; |
| #if defined(OS_CHROMEOS) |
| switch (xievent->evtype) { |
| case XI_TouchBegin: |
| case XI_TouchUpdate: |
| case XI_TouchEnd: |
| ui::DeviceDataManagerX11::GetInstance()->ApplyTouchTransformer( |
| xievent->deviceid, &x, &y); |
| break; |
| default: |
| break; |
| } |
| #endif // defined(OS_CHROMEOS) |
| return gfx::Point(static_cast<int>(x), static_cast<int>(y)); |
| } |
| } |
| return gfx::Point(); |
| } |
| |
| gfx::Point EventSystemLocationFromXEvent(const XEvent& xev) { |
| switch (xev.type) { |
| case EnterNotify: |
| case LeaveNotify: { |
| return gfx::Point(xev.xcrossing.x_root, xev.xcrossing.y_root); |
| } |
| case ButtonPress: |
| case ButtonRelease: { |
| return gfx::Point(xev.xbutton.x_root, xev.xbutton.y_root); |
| } |
| case MotionNotify: { |
| return gfx::Point(xev.xmotion.x_root, xev.xmotion.y_root); |
| } |
| case GenericEvent: { |
| XIDeviceEvent* xievent = static_cast<XIDeviceEvent*>(xev.xcookie.data); |
| return gfx::Point(xievent->root_x, xievent->root_y); |
| } |
| } |
| |
| return gfx::Point(); |
| } |
| |
| int EventButtonFromXEvent(const XEvent& xev) { |
| CHECK_EQ(GenericEvent, xev.type); |
| XIDeviceEvent* xievent = static_cast<XIDeviceEvent*>(xev.xcookie.data); |
| int button = xievent->detail; |
| |
| return (xievent->sourceid == xievent->deviceid) |
| ? DeviceDataManagerX11::GetInstance()->GetMappedButton(button) |
| : button; |
| } |
| |
| int GetChangedMouseButtonFlagsFromXEvent(const XEvent& xev) { |
| switch (xev.type) { |
| case ButtonPress: |
| case ButtonRelease: |
| return GetEventFlagsForButton(xev.xbutton.button); |
| case GenericEvent: { |
| XIDeviceEvent* xievent = static_cast<XIDeviceEvent*>(xev.xcookie.data); |
| switch (xievent->evtype) { |
| case XI_ButtonPress: |
| case XI_ButtonRelease: |
| return GetEventFlagsForButton(EventButtonFromXEvent(xev)); |
| default: |
| break; |
| } |
| break; |
| } |
| default: |
| break; |
| } |
| return 0; |
| } |
| |
| gfx::Vector2d GetMouseWheelOffsetFromXEvent(const XEvent& xev) { |
| float x_offset, y_offset; |
| if (GetScrollOffsetsFromXEvent(xev, &x_offset, &y_offset, NULL, NULL, NULL)) { |
| return gfx::Vector2d(static_cast<int>(x_offset), |
| static_cast<int>(y_offset)); |
| } |
| |
| int button = xev.type == GenericEvent ? EventButtonFromXEvent(xev) |
| : xev.xbutton.button; |
| |
| // If this is an xinput1 scroll event from an xinput2 mouse then we need to |
| // block the legacy scroll events for the necessary axes. |
| int scroll_class_type = |
| DeviceDataManagerX11::GetInstance()->GetScrollClassDeviceDetail(xev); |
| bool xi2_vertical = scroll_class_type & SCROLL_TYPE_VERTICAL; |
| bool xi2_horizontal = scroll_class_type & SCROLL_TYPE_HORIZONTAL; |
| |
| switch (button) { |
| case 4: |
| return gfx::Vector2d(0, xi2_vertical ? 0 : kWheelScrollAmount); |
| case 5: |
| return gfx::Vector2d(0, xi2_vertical ? 0 : -kWheelScrollAmount); |
| case 6: |
| return gfx::Vector2d(xi2_horizontal ? 0 : kWheelScrollAmount, 0); |
| case 7: |
| return gfx::Vector2d(xi2_horizontal ? 0 : -kWheelScrollAmount, 0); |
| default: |
| return gfx::Vector2d(); |
| } |
| } |
| |
| void ClearTouchIdIfReleasedFromXEvent(const XEvent& xev) { |
| ui::EventType type = ui::EventTypeFromXEvent(xev); |
| if (type == ui::ET_TOUCH_CANCELLED || type == ui::ET_TOUCH_RELEASED) { |
| ui::TouchFactory* factory = ui::TouchFactory::GetInstance(); |
| ui::DeviceDataManagerX11* manager = ui::DeviceDataManagerX11::GetInstance(); |
| double tracking_id; |
| if (manager->GetEventData(xev, |
| ui::DeviceDataManagerX11::DT_TOUCH_TRACKING_ID, |
| &tracking_id)) { |
| factory->ReleaseSlotForTrackingID(tracking_id); |
| } |
| } |
| } |
| |
| int GetTouchIdFromXEvent(const XEvent& xev) { |
| double slot = 0; |
| ui::DeviceDataManagerX11* manager = ui::DeviceDataManagerX11::GetInstance(); |
| double tracking_id; |
| if (!manager->GetEventData( |
| xev, ui::DeviceDataManagerX11::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 GetTouchRadiusXFromXEvent(const XEvent& xev) { |
| double radius = GetTouchParamFromXEvent( |
| xev, ui::DeviceDataManagerX11::DT_TOUCH_MAJOR, 0.0) / |
| 2.0; |
| ScaleTouchRadius(xev, &radius); |
| return radius; |
| } |
| |
| float GetTouchRadiusYFromXEvent(const XEvent& xev) { |
| double radius = GetTouchParamFromXEvent( |
| xev, ui::DeviceDataManagerX11::DT_TOUCH_MINOR, 0.0) / |
| 2.0; |
| ScaleTouchRadius(xev, &radius); |
| return radius; |
| } |
| |
| float GetTouchAngleFromXEvent(const XEvent& xev) { |
| return GetTouchParamFromXEvent( |
| xev, ui::DeviceDataManagerX11::DT_TOUCH_ORIENTATION, 0.0) / |
| 2.0; |
| } |
| |
| float GetTouchForceFromXEvent(const XEvent& xev) { |
| XIDeviceEvent* event = static_cast<XIDeviceEvent*>(xev.xcookie.data); |
| if (event->evtype == XI_TouchEnd) |
| return 0.0; |
| double force = 0.0; |
| force = GetTouchParamFromXEvent( |
| xev, ui::DeviceDataManagerX11::DT_TOUCH_PRESSURE, 0.0); |
| unsigned int deviceid = |
| static_cast<XIDeviceEvent*>(xev.xcookie.data)->sourceid; |
| // Force is normalized to fall into [0, 1] |
| if (!ui::DeviceDataManagerX11::GetInstance()->NormalizeData( |
| deviceid, ui::DeviceDataManagerX11::DT_TOUCH_PRESSURE, &force)) |
| force = 0.0; |
| return force; |
| } |
| |
| EventPointerType GetTouchPointerTypeFromXEvent(const XEvent& xev) { |
| XIDeviceEvent* event = static_cast<XIDeviceEvent*>(xev.xcookie.data); |
| DCHECK(ui::TouchFactory::GetInstance()->IsTouchDevice(event->sourceid)); |
| return ui::TouchFactory::GetInstance()->GetTouchDevicePointerType( |
| event->sourceid); |
| } |
| |
| bool GetScrollOffsetsFromXEvent(const XEvent& xev, |
| float* x_offset, |
| float* y_offset, |
| float* x_offset_ordinal, |
| float* y_offset_ordinal, |
| int* finger_count) { |
| // Temp values to prevent passing NULLs to DeviceDataManager. |
| float x_scroll_offset, y_scroll_offset; |
| float x_scroll_offset_ordinal, y_scroll_offset_ordinal; |
| int finger; |
| if (!x_offset) |
| x_offset = &x_scroll_offset; |
| if (!y_offset) |
| y_offset = &y_scroll_offset; |
| if (!x_offset_ordinal) |
| x_offset_ordinal = &x_scroll_offset_ordinal; |
| if (!y_offset_ordinal) |
| y_offset_ordinal = &y_scroll_offset_ordinal; |
| if (!finger_count) |
| finger_count = &finger; |
| |
| if (DeviceDataManagerX11::GetInstance()->IsScrollEvent(xev)) { |
| DeviceDataManagerX11::GetInstance()->GetScrollOffsets( |
| xev, x_offset, y_offset, x_offset_ordinal, y_offset_ordinal, |
| finger_count); |
| return true; |
| } |
| |
| if (DeviceDataManagerX11::GetInstance()->GetScrollClassEventDetail(xev) != |
| SCROLL_TYPE_NO_SCROLL) { |
| double x_scroll_offset, y_scroll_offset; |
| DeviceDataManagerX11::GetInstance()->GetScrollClassOffsets( |
| xev, &x_scroll_offset, &y_scroll_offset); |
| *x_offset = x_scroll_offset * kWheelScrollAmount; |
| *y_offset = y_scroll_offset * kWheelScrollAmount; |
| |
| if (DeviceDataManagerX11::GetInstance()->IsTouchpadXInputEvent(xev)) { |
| *x_offset_ordinal = *x_offset; |
| *y_offset_ordinal = *y_offset; |
| // In libinput, we can check to validate whether the device supports |
| // 'two_finger', 'edge' scrolling or not. See |
| // https://www.mankier.com/4/libinput. |
| *finger_count = 2; |
| } |
| return true; |
| } |
| return false; |
| } |
| |
| bool GetFlingDataFromXEvent(const XEvent& xev, |
| float* vx, |
| float* vy, |
| float* vx_ordinal, |
| float* vy_ordinal, |
| bool* is_cancel) { |
| if (!DeviceDataManagerX11::GetInstance()->IsFlingEvent(xev)) |
| 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_; |
| |
| DeviceDataManagerX11::GetInstance()->GetFlingData(xev, vx, vy, vx_ordinal, |
| vy_ordinal, is_cancel); |
| return true; |
| } |
| |
| bool IsAltPressed() { |
| return XModifierStateWatcher::GetInstance()->state() & Mod1Mask; |
| } |
| |
| void ResetTimestampRolloverCountersForTesting() { |
| g_last_seen_timestamp_ms = 0; |
| g_rollover_ms = 0; |
| } |
| |
| } // namespace ui |
