ui/events/mojo/event_constants.mojom

// Copyright 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.

module ui.mojom;

// AcceleratorPhase specifies which phase of event matching the matcher should
// be considered for. See WindowTree for details on how it handles the
// AcceleratorPhase.
enum AcceleratorPhase {
  PRE_TARGET,
  POST_TARGET,
};

enum EventType {
  UNKNOWN,
  KEY_PRESSED,
  KEY_RELEASED,
  GESTURE_TAP,
  GESTURE_SWIPE,
  GESTURE_PINCH_BEGIN,
  GESTURE_PINCH_END,
  GESTURE_PINCH_UPDATE,
  SCROLL,
  SCROLL_FLING_START,
  SCROLL_FLING_CANCEL,
  CANCEL_MODE,
  // MOUSE_MOVED has a naming conflict in Windows, where there is a
  // #define MOUSE_MOVED. Therefore we had to add the suffix, _EVENT. for
  // consistency, all other mouse event types also were given this suffix.
  MOUSE_PRESSED_EVENT,
  MOUSE_DRAGGED_EVENT,
  MOUSE_RELEASED_EVENT,
  MOUSE_MOVED_EVENT,
  MOUSE_ENTERED_EVENT,
  MOUSE_EXITED_EVENT,
  MOUSE_WHEEL_EVENT,
  MOUSE_CAPTURE_CHANGED_EVENT,
  TOUCH_RELEASED,
  TOUCH_PRESSED,
  TOUCH_MOVED,
  TOUCH_CANCELLED,
};

// This mirrors ui::EventFlags
// TODO(morrita): Use shift operator once it is available.
const int32 kEventFlagNone               = 0x00000;
const int32 kEventFlagIsSynthesized      = 0x00001;
const int32 kEventFlagShiftDown          = 0x00002;
const int32 kEventFlagControlDown        = 0x00004;
const int32 kEventFlagAltDown            = 0x00008;
const int32 kEventFlagCommandDown        = 0x00010;
const int32 kEventFlagAltgrDown          = 0x00020;
const int32 kEventFlagMod3Down           = 0x00040;
const int32 kEventFlagNumLockOn          = 0x00080;
const int32 kEventFlagCapsLockOn         = 0x00100;
const int32 kEventFlagScrollLockOn       = 0x00200;
const int32 kEventFlagLeftMouseButton    = 0x00400;
const int32 kEventFlagMiddleMouseButton  = 0x00800;
const int32 kEventFlagRightMouseButton   = 0x01000;
const int32 kEventFlagBackMouseButton    = 0x02000;
const int32 kEventFlagForwardMouseButton = 0x04000;

const int32 kMouseEventFlagIsDoubleClick = 0x08000;
const int32 kMouseEventFlagIsTripleClick = 0x10000;
const int32 kMouseEventFlagIsNonClient   = 0x20000;

// TODO(erg): Move accessibility flags and maybe synthetic touch events here.

// TODO(sky): rename EventPointerType.
enum PointerKind {
  UNKNOWN,
  MOUSE,
  PEN,
  TOUCH,
  ERASER,
};

// Phase information used for a ScrollEvent.
// These values match ui::ScrollEventPhase in ui/events/event_constants.h
enum ScrollEventPhase {
  kNone,
  kBegan,
  kUpdate,
  kEnd,
};

// Momentum phase information used for a ScrollEvent.
// These values match ui::EventMomentumPhase in ui/events/event_constants.h
enum EventMomentumPhase {
  NONE,
  BEGAN,
  MAY_BEGIN,
  INERTIAL_UPDATE,
  END,
};

// Device type for gesture events.
// These values match ui::GestureDeviceType in ui/events/event_constants.h
enum GestureDeviceType {
  DEVICE_UNKNOWN,
  DEVICE_TOUCHPAD,
  DEVICE_TOUCHSCREEN,
};