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Unified Diff: ui/base/x/events_x.cc

Issue 24482004: events: Make platform specific events code into ui/events/. (Closed) Base URL: svn://svn.chromium.org/chrome/trunk/src
Patch Set: . Created 7 years, 3 months ago
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Index: ui/base/x/events_x.cc
diff --git a/ui/base/x/events_x.cc b/ui/base/x/events_x.cc
deleted file mode 100644
index 06301a9b08607b61d8eed7b9e555bee01d61f546..0000000000000000000000000000000000000000
--- a/ui/base/x/events_x.cc
+++ /dev/null
@@ -1,755 +0,0 @@
-// 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 <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/base/touch/touch_factory_x11.h"
-#include "ui/base/x/device_data_manager.h"
-#include "ui/base/x/device_list_cache_x.h"
-#include "ui/base/x/x11_atom_cache.h"
-#include "ui/base/x/x11_util.h"
-#include "ui/events/event_utils.h"
-#include "ui/events/keycodes/keyboard_code_conversion_x.h"
-#include "ui/gfx/display.h"
-#include "ui/gfx/point.h"
-#include "ui/gfx/rect.h"
-#include "ui/gfx/screen.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::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;
- }
-
- return ui::ET_UNKNOWN;
-#else
- ui::TouchFactory* factory = ui::TouchFactory::GetInstance();
-
- // If this device doesn't support multi-touch, then just use the normal
- // pressed/release events to indicate touch start/end. With multi-touch,
- // these events are sent only for the first (pressed) or last (released)
- // touch point, and so we must infer start/end from motion events.
- if (!factory->IsMultiTouchDevice(event->sourceid)) {
- switch (event->evtype) {
- case XI_ButtonPress:
- return ui::ET_TOUCH_PRESSED;
- case XI_ButtonRelease:
- return ui::ET_TOUCH_RELEASED;
- case XI_Motion:
- if (GetButtonMaskForX2Event(event))
- return ui::ET_TOUCH_MOVED;
- return ui::ET_UNKNOWN;
- default:
- NOTREACHED();
- }
- }
-
- DCHECK_EQ(event->evtype, XI_Motion);
-
- // Note: We will not generate a _STATIONARY event here. It will be created,
- // when necessary, by a RWHVV.
- // TODO(sad): When should _CANCELLED be generated?
-
- ui::DeviceDataManager* manager = ui::DeviceDataManager::GetInstance();
-
- double slot;
- if (!manager->GetEventData(
- *native_event, ui::DeviceDataManager::DT_TOUCH_SLOT_ID, &slot))
- return ui::ET_UNKNOWN;
-
- if (!factory->IsSlotUsed(slot)) {
- // This is a new touch point.
- return ui::ET_TOUCH_PRESSED;
- }
-
- double tracking;
- if (!manager->GetEventData(
- *native_event, ui::DeviceDataManager::DT_TOUCH_TRACKING_ID, &tracking))
- return ui::ET_UNKNOWN;
-
- if (tracking == 0l) {
- // The touch point has been released.
- return ui::ET_TOUCH_RELEASED;
- }
-
- return ui::ET_TOUCH_MOVED;
-#endif // defined(USE_XI2_MT)
-}
-
-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(static_cast<int>(xievent->event_x),
- static_cast<int>(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) ?
- ui::GetMappedButton(button) : button;
-}
-
-KeyboardCode KeyboardCodeFromNative(const base::NativeEvent& native_event) {
- return KeyboardCodeFromXKeyEvent(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) {
-#if defined(USE_XI2_MT)
- 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);
- }
- }
-#endif
-}
-
-int GetTouchId(const base::NativeEvent& xev) {
- double slot = 0;
- ui::TouchFactory* factory = ui::TouchFactory::GetInstance();
- XIDeviceEvent* xievent = static_cast<XIDeviceEvent*>(xev->xcookie.data);
- if (!factory->IsMultiTouchDevice(xievent->sourceid)) {
- // TODO(sad): Come up with a way to generate touch-ids for multi-touch
- // events when touch-events are generated from a single-touch device.
- return slot;
- }
-
- ui::DeviceDataManager* manager = ui::DeviceDataManager::GetInstance();
-
-#if defined(USE_XI2_MT)
- 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 {
- slot = factory->GetSlotForTrackingID(tracking_id);
- }
-#else
- if (!manager->GetEventData(
- *xev, ui::DeviceDataManager::DT_TOUCH_SLOT_ID, &slot))
- LOG(ERROR) << "Could not get the slot ID for the event. Using 0.";
-#endif
- 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
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