1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
|
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#ifndef mozilla_TouchEvents_h__
#define mozilla_TouchEvents_h__
#include <stdint.h>
#include "mozilla/dom/Touch.h"
#include "mozilla/MouseEvents.h"
#include "nsAutoPtr.h"
#include "nsIDOMSimpleGestureEvent.h"
#include "nsTArray.h"
namespace mozilla {
/******************************************************************************
* mozilla::WidgetGestureNotifyEvent
*
* This event is the first event generated when the user touches
* the screen with a finger, and it's meant to decide what kind
* of action we'll use for that touch interaction.
*
* The event is dispatched to the layout and based on what is underneath
* the initial contact point it's then decided if we should pan
* (finger scrolling) or drag the target element.
******************************************************************************/
class WidgetGestureNotifyEvent : public WidgetGUIEvent
{
public:
virtual WidgetGestureNotifyEvent* AsGestureNotifyEvent() override
{
return this;
}
WidgetGestureNotifyEvent(bool aIsTrusted, uint32_t aMessage,
nsIWidget *aWidget)
: WidgetGUIEvent(aIsTrusted, aMessage, aWidget, eGestureNotifyEventClass)
, panDirection(ePanNone)
, displayPanFeedback(false)
{
}
virtual WidgetEvent* Duplicate() const override
{
// XXX Looks like this event is handled only in PostHandleEvent() of
// EventStateManager. Therefore, it might be possible to handle this
// in PreHandleEvent() and not to dispatch as a DOM event into the DOM
// tree like ContentQueryEvent. Then, this event doesn't need to
// support Duplicate().
MOZ_ASSERT(mClass == eGestureNotifyEventClass,
"Duplicate() must be overridden by sub class");
// Not copying widget, it is a weak reference.
WidgetGestureNotifyEvent* result =
new WidgetGestureNotifyEvent(false, message, nullptr);
result->AssignGestureNotifyEventData(*this, true);
result->mFlags = mFlags;
return result;
}
enum ePanDirection
{
ePanNone,
ePanVertical,
ePanHorizontal,
ePanBoth
};
ePanDirection panDirection;
bool displayPanFeedback;
void AssignGestureNotifyEventData(const WidgetGestureNotifyEvent& aEvent,
bool aCopyTargets)
{
AssignGUIEventData(aEvent, aCopyTargets);
panDirection = aEvent.panDirection;
displayPanFeedback = aEvent.displayPanFeedback;
}
};
/******************************************************************************
* mozilla::WidgetTouchEvent
******************************************************************************/
class WidgetSimpleGestureEvent : public WidgetMouseEventBase
{
public:
virtual WidgetSimpleGestureEvent* AsSimpleGestureEvent() override
{
return this;
}
WidgetSimpleGestureEvent(bool aIsTrusted, uint32_t aMessage,
nsIWidget* aWidget)
: WidgetMouseEventBase(aIsTrusted, aMessage, aWidget,
eSimpleGestureEventClass)
, allowedDirections(0)
, direction(0)
, delta(0.0)
, clickCount(0)
{
}
WidgetSimpleGestureEvent(const WidgetSimpleGestureEvent& aOther)
: WidgetMouseEventBase(aOther.mFlags.mIsTrusted, aOther.message,
aOther.widget, eSimpleGestureEventClass)
, allowedDirections(aOther.allowedDirections)
, direction(aOther.direction)
, delta(aOther.delta)
, clickCount(0)
{
}
virtual WidgetEvent* Duplicate() const override
{
MOZ_ASSERT(mClass == eSimpleGestureEventClass,
"Duplicate() must be overridden by sub class");
// Not copying widget, it is a weak reference.
WidgetSimpleGestureEvent* result =
new WidgetSimpleGestureEvent(false, message, nullptr);
result->AssignSimpleGestureEventData(*this, true);
result->mFlags = mFlags;
return result;
}
// See nsIDOMSimpleGestureEvent for values
uint32_t allowedDirections;
// See nsIDOMSimpleGestureEvent for values
uint32_t direction;
// Delta for magnify and rotate events
double delta;
// The number of taps for tap events
uint32_t clickCount;
// XXX Not tested by test_assign_event_data.html
void AssignSimpleGestureEventData(const WidgetSimpleGestureEvent& aEvent,
bool aCopyTargets)
{
AssignMouseEventBaseData(aEvent, aCopyTargets);
// allowedDirections isn't copied
direction = aEvent.direction;
delta = aEvent.delta;
clickCount = aEvent.clickCount;
}
};
/******************************************************************************
* mozilla::WidgetTouchEvent
******************************************************************************/
class WidgetTouchEvent : public WidgetInputEvent
{
public:
typedef nsTArray<nsRefPtr<mozilla::dom::Touch>> TouchArray;
typedef nsAutoTArray<nsRefPtr<mozilla::dom::Touch>, 10> AutoTouchArray;
virtual WidgetTouchEvent* AsTouchEvent() override { return this; }
WidgetTouchEvent()
{
}
WidgetTouchEvent(const WidgetTouchEvent& aOther)
: WidgetInputEvent(aOther.mFlags.mIsTrusted, aOther.message, aOther.widget,
eTouchEventClass)
{
modifiers = aOther.modifiers;
time = aOther.time;
timeStamp = aOther.timeStamp;
touches.AppendElements(aOther.touches);
mFlags.mCancelable = message != NS_TOUCH_CANCEL;
MOZ_COUNT_CTOR(WidgetTouchEvent);
}
WidgetTouchEvent(bool aIsTrusted, uint32_t aMessage, nsIWidget* aWidget)
: WidgetInputEvent(aIsTrusted, aMessage, aWidget, eTouchEventClass)
{
MOZ_COUNT_CTOR(WidgetTouchEvent);
mFlags.mCancelable = message != NS_TOUCH_CANCEL;
}
virtual ~WidgetTouchEvent()
{
MOZ_COUNT_DTOR(WidgetTouchEvent);
}
virtual WidgetEvent* Duplicate() const override
{
MOZ_ASSERT(mClass == eTouchEventClass,
"Duplicate() must be overridden by sub class");
// Not copying widget, it is a weak reference.
WidgetTouchEvent* result = new WidgetTouchEvent(false, message, nullptr);
result->AssignTouchEventData(*this, true);
result->mFlags = mFlags;
return result;
}
TouchArray touches;
void AssignTouchEventData(const WidgetTouchEvent& aEvent, bool aCopyTargets)
{
AssignInputEventData(aEvent, aCopyTargets);
// Assign*EventData() assume that they're called only new instance.
MOZ_ASSERT(touches.IsEmpty());
touches.AppendElements(aEvent.touches);
}
};
} // namespace mozilla
#endif // mozilla_TouchEvents_h__
|
