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
|
// Copyright (c) 2011 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 "aura/event.h"
#include <X11/Xlib.h>
#include <X11/extensions/XInput2.h>
#include "base/logging.h"
#include "ui/base/keycodes/keyboard_code_conversion_x.h"
namespace aura {
namespace {
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 & Button1Mask)
flags |= ui::EF_LEFT_BUTTON_DOWN;
if (state & Button2Mask)
flags |= ui::EF_MIDDLE_BUTTON_DOWN;
if (state & Button3Mask)
flags |= ui::EF_RIGHT_BUTTON_DOWN;
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_BUTTON_DOWN;
case 2:
return ui::EF_MIDDLE_BUTTON_DOWN;
case 3:
return ui::EF_RIGHT_BUTTON_DOWN;
}
DLOG(WARNING) << "Unexpected button (" << button << ") received.";
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)) {
buttonflags |= GetEventFlagsForButton(i);
}
}
return buttonflags;
}
ui::EventType EventTypeFromNative(NativeEvent native_event) {
switch (native_event->type) {
case KeyPress:
return ui::ET_KEY_PRESSED;
case KeyRelease:
return ui::ET_KEY_RELEASED;
case ButtonPress:
if (native_event->xbutton.button == 4 ||
native_event->xbutton.button == 5)
return ui::ET_MOUSEWHEEL;
return ui::ET_MOUSE_PRESSED;
case ButtonRelease:
if (native_event->xbutton.button == 4 ||
native_event->xbutton.button == 5)
return ui::ET_MOUSEWHEEL;
return ui::ET_MOUSE_RELEASED;
case MotionNotify:
if (native_event->xmotion.state &
(Button1Mask | Button2Mask | Button3Mask))
return ui::ET_MOUSE_DRAGGED;
return ui::ET_MOUSE_MOVED;
case GenericEvent: {
XIDeviceEvent* xievent =
static_cast<XIDeviceEvent*>(native_event->xcookie.data);
// TODO(sad): Determine if sourceid is a touch device.
switch (xievent->evtype) {
case XI_ButtonPress:
return (xievent->detail == 4 || xievent->detail == 5) ?
ui::ET_MOUSEWHEEL : ui::ET_MOUSE_PRESSED;
case XI_ButtonRelease:
return (xievent->detail == 4 || xievent->detail == 5) ?
ui::ET_MOUSEWHEEL : ui::ET_MOUSE_RELEASED;
case XI_Motion:
return GetButtonMaskForX2Event(xievent) ? ui::ET_MOUSE_DRAGGED :
ui::ET_MOUSE_MOVED;
}
}
default:
NOTREACHED();
break;
}
return ui::ET_UNKNOWN;
}
gfx::Point GetEventLocation(XEvent* xev) {
switch (xev->type) {
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);
return gfx::Point(static_cast<int>(xievent->event_x),
static_cast<int>(xievent->event_y));
}
}
return gfx::Point();
}
int GetLocatedEventFlags(XEvent* xev) {
switch (xev->type) {
case ButtonPress:
case ButtonRelease:
return GetEventFlagsFromXState(xev->xbutton.state) |
GetEventFlagsForButton(xev->xbutton.button);
case MotionNotify:
return GetEventFlagsFromXState(xev->xmotion.state);
case GenericEvent: {
XIDeviceEvent* xievent = static_cast<XIDeviceEvent*>(xev->xcookie.data);
bool touch = false; // TODO(sad): Determine if xievent->sourceid is a
// touch device.
switch (xievent->evtype) {
case XI_ButtonPress:
case XI_ButtonRelease:
return GetButtonMaskForX2Event(xievent) |
GetEventFlagsFromXState(xievent->mods.effective) |
(touch ? 0 : GetEventFlagsForButton(xievent->detail));
case XI_Motion:
return GetButtonMaskForX2Event(xievent) |
GetEventFlagsFromXState(xievent->mods.effective);
}
}
}
return 0;
}
} // namespace
void Event::Init() {
memset(&native_event_, 0, sizeof(native_event_));
}
void Event::InitWithNativeEvent(NativeEvent native_event) {
native_event_ = native_event;
}
LocatedEvent::LocatedEvent(NativeEvent native_event)
: Event(native_event, EventTypeFromNative(native_event),
GetLocatedEventFlags(native_event)),
location_(GetEventLocation(native_event)) {
}
MouseEvent::MouseEvent(NativeEvent native_event)
: LocatedEvent(native_event) {
}
KeyEvent::KeyEvent(NativeEvent native_event)
: Event(native_event,
EventTypeFromNative(native_event),
GetEventFlagsFromXState(native_event->xbutton.state)),
key_code_(ui::KeyboardCodeFromXKeyEvent(native_event)) {
}
} // namespace aura
|
