Ozone X11 platform

ui/events/x/events_x.h

-// Copyright (c) 2012 The Chromium Authors. All rights reserved.
+// Copyright (c) 2014 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_EVENT_UTILS_H_
-#define UI_EVENTS_EVENT_UTILS_H_
+#ifndef UI_EVENTS_X_EVENTS_X_H_
+#define UI_EVENTS_X_EVENTS_X_H_
 
 #include "base/basictypes.h"
 #include "base/event_types.h"
-#include "base/memory/scoped_ptr.h"
 #include "base/strings/string16.h"
 #include "ui/events/event_constants.h"
+#include "ui/events/events_export.h"
 #include "ui/events/keycodes/keyboard_codes.h"
 #include "ui/gfx/display.h"
 #include "ui/gfx/native_widget_types.h"
-#include "ui/events/events_export.h"
 
-#if defined(OS_WIN)
-#include <windows.h>
-#endif
+typedef union _XEvent XEvent;
 
 namespace gfx {
 class Point;
 class Vector2d;
 }
 
 namespace base {
 class TimeDelta;
 }
 
 namespace ui {
 
-class Event;
-class MouseEvent;
-
-// Updates the list of devices for cached properties.
-EVENTS_EXPORT void UpdateDeviceList();
-
-// Returns a ui::Event wrapping a native event. Ownership of the returned value
-// is transferred to the caller.
-EVENTS_EXPORT scoped_ptr<Event> EventFromNative(
-    const base::NativeEvent& native_event);
-
 // Get the EventType from a native event.
-EVENTS_EXPORT EventType EventTypeFromNative(
-    const base::NativeEvent& native_event);
+EVENTS_EXPORT EventType EventTypeFromNative(const XEvent* native_event);

[spang, 2014/11/24 18:56:54]

I don't think we should have these X overloads in our build. It is very
confusing to have both

EventTypeFromNative(const XEvent* native_event);

and

EventTypeFromNative(const base::NativeEvent& aka. void* const &);

in the same build.

[achaulk, 2014/11/24 19:28:39]

Well we still need the logic to determine EventType given an XEvent, along with
maybe about half of these to be able to generate the ui::Event objects. I could
copy-paste most of the cc file and rename everything, but that doesn't seem any
better

Besides, when NativeEvent is removed, all the NativeEvent& versions will go away

 
 // Get the EventFlags from a native event.
-EVENTS_EXPORT int EventFlagsFromNative(const base::NativeEvent& native_event);
+EVENTS_EXPORT int EventFlagsFromNative(const XEvent* native_event);
 
 // Get the timestamp from a native event.
-EVENTS_EXPORT base::TimeDelta EventTimeFromNative(
-    const base::NativeEvent& native_event);
-
-// Create a timestamp based on the current time.
-EVENTS_EXPORT base::TimeDelta EventTimeForNow();
+EVENTS_EXPORT base::TimeDelta EventTimeFromNative(const XEvent* native_event);
 
 // Get the location from a native event.  The coordinate system of the resultant
 // |Point| has the origin at top-left of the "root window".  The nature of
 // this "root window" and how it maps to platform-specific drawing surfaces is
 // defined in ui/aura/root_window.* and ui/aura/window_tree_host*.
 // TODO(tdresser): Return gfx::PointF here. See crbug.com/337827.
-EVENTS_EXPORT gfx::Point EventLocationFromNative(
-    const base::NativeEvent& native_event);
+EVENTS_EXPORT gfx::Point EventLocationFromNative(const XEvent* native_event);
 
 // Gets the location in native system coordinate space.
 EVENTS_EXPORT gfx::Point EventSystemLocationFromNative(
-    const base::NativeEvent& native_event);
+    const XEvent* native_event);
 
-#if defined(USE_X11)
 // Returns the 'real' button for an event. The button reported in slave events
 // does not take into account any remapping (e.g. using xmodmap), while the
 // button reported in master events do. This is a utility function to always
 // return the mapped button.
-EVENTS_EXPORT int EventButtonFromNative(const base::NativeEvent& native_event);
-#endif
+EVENTS_EXPORT int EventButtonFromNative(const XEvent* native_event);
 
 // Returns the KeyboardCode from a native event.
-EVENTS_EXPORT KeyboardCode KeyboardCodeFromNative(
-    const base::NativeEvent& native_event);
+EVENTS_EXPORT KeyboardCode KeyboardCodeFromNative(const XEvent* native_event);
 
 // Returns the DOM KeyboardEvent code (physical location in the
 // keyboard) from a native event.  The ownership of the return value
 // is NOT trasferred to the caller.
-EVENTS_EXPORT const char* CodeFromNative(
-    const base::NativeEvent& native_event);
+EVENTS_EXPORT const char* CodeFromNative(const XEvent* native_event);
 
 // Returns the platform related key code. For X11, it is xksym value.
-EVENTS_EXPORT uint32 PlatformKeycodeFromNative(
-    const base::NativeEvent& native_event);
+EVENTS_EXPORT uint32 PlatformKeycodeFromNative(const XEvent* native_event);
 
 // Returns a control character sequences from a |windows_key_code|.
 EVENTS_EXPORT base::char16 GetControlCharacterForKeycode(int windows_key_code,
                                                          bool shift);
 
 // Returns true if the keyboard event is a character event rather than
 // a keystroke event.
-EVENTS_EXPORT bool IsCharFromNative(const base::NativeEvent& native_event);
+EVENTS_EXPORT bool IsCharFromNative(const XEvent* native_event);
 
 // Returns the flags of the button that changed during a press/release.
 EVENTS_EXPORT int GetChangedMouseButtonFlagsFromNative(
-    const base::NativeEvent& native_event);
+    const XEvent* native_event);
 
 // Gets the mouse wheel offsets from a native event.
-EVENTS_EXPORT gfx::Vector2d GetMouseWheelOffset(
-    const base::NativeEvent& native_event);
+EVENTS_EXPORT gfx::Vector2d GetMouseWheelOffset(const XEvent* native_event);
 
 // Returns a copy of |native_event|. Depending on the platform, this copy may
 // need to be deleted with ReleaseCopiedNativeEvent().
-base::NativeEvent CopyNativeEvent(
-    const base::NativeEvent& native_event);
+XEvent* CopyNativeEvent(const XEvent* native_event);
 
 // Delete a |native_event| previously created by CopyNativeEvent().
-void ReleaseCopiedNativeEvent(
-    const base::NativeEvent& native_event);
+void ReleaseCopiedNativeEvent(const XEvent* native_event);
 
 // Gets the touch id from a native event.
-EVENTS_EXPORT int GetTouchId(const base::NativeEvent& native_event);
+EVENTS_EXPORT int GetTouchId(const XEvent* native_event);
 
 // Increases the number of times |ClearTouchIdIfReleased| needs to be called on
 // an event with a given touch id before it will actually be cleared.
-EVENTS_EXPORT void IncrementTouchIdRefCount(
-    const base::NativeEvent& native_event);
+EVENTS_EXPORT void IncrementTouchIdRefCount(const XEvent* native_event);
 
 // Clear the touch id from bookkeeping if it is a release/cancel event.
-EVENTS_EXPORT void ClearTouchIdIfReleased(
-    const base::NativeEvent& native_event);
+EVENTS_EXPORT void ClearTouchIdIfReleased(const XEvent* native_event);
 
 // Gets the radius along the X/Y axis from a native event. Default is 1.0.
-EVENTS_EXPORT float GetTouchRadiusX(const base::NativeEvent& native_event);
-EVENTS_EXPORT float GetTouchRadiusY(const base::NativeEvent& native_event);
+EVENTS_EXPORT float GetTouchRadiusX(const XEvent* native_event);
+EVENTS_EXPORT float GetTouchRadiusY(const XEvent* native_event);
 
 // Gets the angle of the major axis away from the X axis. Default is 0.0.
-EVENTS_EXPORT float GetTouchAngle(const base::NativeEvent& native_event);
+EVENTS_EXPORT float GetTouchAngle(const XEvent* native_event);
 
 // Gets the force from a native_event. Normalized to be [0, 1]. Default is 0.0.
-EVENTS_EXPORT float GetTouchForce(const base::NativeEvent& native_event);
+EVENTS_EXPORT float GetTouchForce(const XEvent* native_event);
 
 // Gets the fling velocity from a native event. is_cancel is set to true if
 // this was a tap down, intended to stop an ongoing fling.
-EVENTS_EXPORT bool GetFlingData(const base::NativeEvent& native_event,
+EVENTS_EXPORT bool GetFlingData(const XEvent* native_event,
                                 float* vx,
                                 float* vy,
                                 float* vx_ordinal,
                                 float* vy_ordinal,
                                 bool* is_cancel);
 
 // Returns whether this is a scroll event and optionally gets the amount to be
 // scrolled. |x_offset|, |y_offset| and |finger_count| can be NULL.
-EVENTS_EXPORT bool GetScrollOffsets(const base::NativeEvent& native_event,
+EVENTS_EXPORT bool GetScrollOffsets(const XEvent* native_event,
                                     float* x_offset,
                                     float* y_offset,
                                     float* x_offset_ordinal,
                                     float* y_offset_ordinal,
                                     int* finger_count);
 
-// Returns whether natural scrolling should be used for touchpad.
-EVENTS_EXPORT bool ShouldDefaultToNaturalScroll();
-
-// Returns whether or not the internal display produces touch events.
-EVENTS_EXPORT gfx::Display::TouchSupport GetInternalDisplayTouchSupport();
-
-#if defined(OS_WIN)
-EVENTS_EXPORT int GetModifiersFromACCEL(const ACCEL& accel);
-EVENTS_EXPORT int GetModifiersFromKeyState();
-
-// Returns true if |message| identifies a mouse event that was generated as the
-// result of a touch event.
-EVENTS_EXPORT bool IsMouseEventFromTouch(UINT message);
-
-// Converts scan code and lParam each other.  The scan code
-// representing an extended key contains 0xE000 bits.
-EVENTS_EXPORT uint16 GetScanCodeFromLParam(LPARAM lParam);
-EVENTS_EXPORT LPARAM GetLParamFromScanCode(uint16 scan_code);
-
+#if defined(USE_OZONE) && !defined(USE_X11)
+EVENTS_EXPORT base::NativeEvent TranslateXEventToNativeEvent(XEvent* xevent);
 #endif
 
-#if defined(USE_X11)
-// Update the native X11 event to correspond to the new flags.
-EVENTS_EXPORT void UpdateX11EventForFlags(Event* event);
-// Update the native X11 event to correspond to the new button flags.
-EVENTS_EXPORT void UpdateX11EventForChangedButtonFlags(MouseEvent* event);
-#endif
-
-// Registers a custom event type.
-EVENTS_EXPORT int RegisterCustomEventType();
-
 }  // namespace ui
 
 #endif  // UI_EVENTS_EVENT_UTILS_H_