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
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
|
// 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.
// Portions based heavily on:
// third_party/WebKit/public/web/gtk/WebInputEventFactory.cpp
//
/*
* Copyright (C) 2006-2011 Google Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following disclaimer
* in the documentation and/or other materials provided with the
* distribution.
* * Neither the name of Google Inc. nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "content/browser/renderer_host/web_input_event_aura.h"
#include <X11/keysym.h>
#include <X11/Xlib.h>
#include <X11/Xutil.h>
#include <cstdlib>
#include "base/event_types.h"
#include "base/logging.h"
#include "content/browser/renderer_host/ui_events_helper.h"
#include "ui/base/events/event.h"
#include "ui/base/events/event_constants.h"
#include "ui/base/keycodes/keyboard_code_conversion_x.h"
#include "ui/base/keycodes/keyboard_codes.h"
namespace content {
// chromium WebKit does not provide a WebInputEventFactory for X11, so we have
// to do the work here ourselves.
namespace {
int XKeyEventToWindowsKeyCode(XKeyEvent* event) {
int windows_key_code =
ui::KeyboardCodeFromXKeyEvent(reinterpret_cast<XEvent*>(event));
if (windows_key_code == ui::VKEY_SHIFT ||
windows_key_code == ui::VKEY_CONTROL ||
windows_key_code == ui::VKEY_MENU) {
// To support DOM3 'location' attribute, we need to lookup an X KeySym and
// set ui::VKEY_[LR]XXX instead of ui::VKEY_XXX.
KeySym keysym = XK_VoidSymbol;
XLookupString(event, NULL, 0, &keysym, NULL);
switch (keysym) {
case XK_Shift_L:
return ui::VKEY_LSHIFT;
case XK_Shift_R:
return ui::VKEY_RSHIFT;
case XK_Control_L:
return ui::VKEY_LCONTROL;
case XK_Control_R:
return ui::VKEY_RCONTROL;
case XK_Meta_L:
case XK_Alt_L:
return ui::VKEY_LMENU;
case XK_Meta_R:
case XK_Alt_R:
return ui::VKEY_RMENU;
}
}
return windows_key_code;
}
// From third_party/WebKit/Source/web/gtk/WebInputEventFactory.cpp:
WebKit::WebUChar GetControlCharacter(int windows_key_code, bool shift) {
if (windows_key_code >= ui::VKEY_A &&
windows_key_code <= ui::VKEY_Z) {
// ctrl-A ~ ctrl-Z map to \x01 ~ \x1A
return windows_key_code - ui::VKEY_A + 1;
}
if (shift) {
// following graphics chars require shift key to input.
switch (windows_key_code) {
// ctrl-@ maps to \x00 (Null byte)
case ui::VKEY_2:
return 0;
// ctrl-^ maps to \x1E (Record separator, Information separator two)
case ui::VKEY_6:
return 0x1E;
// ctrl-_ maps to \x1F (Unit separator, Information separator one)
case ui::VKEY_OEM_MINUS:
return 0x1F;
// Returns 0 for all other keys to avoid inputting unexpected chars.
default:
break;
}
} else {
switch (windows_key_code) {
// ctrl-[ maps to \x1B (Escape)
case ui::VKEY_OEM_4:
return 0x1B;
// ctrl-\ maps to \x1C (File separator, Information separator four)
case ui::VKEY_OEM_5:
return 0x1C;
// ctrl-] maps to \x1D (Group separator, Information separator three)
case ui::VKEY_OEM_6:
return 0x1D;
// ctrl-Enter maps to \x0A (Line feed)
case ui::VKEY_RETURN:
return 0x0A;
// Returns 0 for all other keys to avoid inputting unexpected chars.
default:
break;
}
}
return 0;
}
} // namespace
WebKit::WebMouseWheelEvent MakeWebMouseWheelEventFromAuraEvent(
ui::ScrollEvent* event) {
WebKit::WebMouseWheelEvent webkit_event;
webkit_event.type = WebKit::WebInputEvent::MouseWheel;
webkit_event.button = WebKit::WebMouseEvent::ButtonNone;
webkit_event.modifiers = EventFlagsToWebEventModifiers(event->flags());
webkit_event.timeStampSeconds = event->time_stamp().InSecondsF();
webkit_event.hasPreciseScrollingDeltas = true;
webkit_event.deltaX = event->x_offset();
if (event->x_offset_ordinal() != 0.f && event->x_offset() != 0.f) {
webkit_event.accelerationRatioX =
event->x_offset_ordinal() / event->x_offset();
}
webkit_event.wheelTicksX = webkit_event.deltaX / kPixelsPerTick;
webkit_event.deltaY = event->y_offset();
webkit_event.wheelTicksY = webkit_event.deltaY / kPixelsPerTick;
if (event->y_offset_ordinal() != 0.f && event->y_offset() != 0.f) {
webkit_event.accelerationRatioY =
event->y_offset_ordinal() / event->y_offset();
}
return webkit_event;
}
// NOTE: ui::ScrollEvent instances come from the touchpad.
WebKit::WebGestureEvent MakeWebGestureEventFromAuraEvent(
ui::ScrollEvent* event) {
WebKit::WebGestureEvent webkit_event;
switch (event->type()) {
case ui::ET_SCROLL_FLING_START:
webkit_event.type = WebKit::WebInputEvent::GestureFlingStart;
webkit_event.data.flingStart.velocityX = event->x_offset();
webkit_event.data.flingStart.velocityY = event->y_offset();
break;
case ui::ET_SCROLL_FLING_CANCEL:
webkit_event.type = WebKit::WebInputEvent::GestureFlingCancel;
break;
case ui::ET_SCROLL:
NOTREACHED() << "Invalid gesture type: " << event->type();
break;
default:
NOTREACHED() << "Unknown gesture type: " << event->type();
}
webkit_event.sourceDevice = WebKit::WebGestureEvent::Touchpad;
webkit_event.modifiers = EventFlagsToWebEventModifiers(event->flags());
webkit_event.timeStampSeconds = event->time_stamp().InSecondsF();
return webkit_event;
}
WebKit::WebKeyboardEvent MakeWebKeyboardEventFromAuraEvent(
ui::KeyEvent* event) {
base::NativeEvent native_event = event->native_event();
WebKit::WebKeyboardEvent webkit_event;
XKeyEvent* native_key_event = &native_event->xkey;
webkit_event.timeStampSeconds = event->time_stamp().InSecondsF();
webkit_event.modifiers = EventFlagsToWebEventModifiers(event->flags());
switch (native_event->type) {
case KeyPress:
webkit_event.type = event->is_char() ? WebKit::WebInputEvent::Char :
WebKit::WebInputEvent::RawKeyDown;
break;
case KeyRelease:
webkit_event.type = WebKit::WebInputEvent::KeyUp;
break;
default:
NOTREACHED();
}
if (webkit_event.modifiers & WebKit::WebInputEvent::AltKey)
webkit_event.isSystemKey = true;
webkit_event.windowsKeyCode = XKeyEventToWindowsKeyCode(native_key_event);
webkit_event.nativeKeyCode = native_key_event->keycode;
if (webkit_event.windowsKeyCode == ui::VKEY_RETURN)
webkit_event.unmodifiedText[0] = '\r';
else
webkit_event.unmodifiedText[0] = ui::GetCharacterFromXEvent(native_event);
if (webkit_event.modifiers & WebKit::WebInputEvent::ControlKey) {
webkit_event.text[0] =
GetControlCharacter(
webkit_event.windowsKeyCode,
webkit_event.modifiers & WebKit::WebInputEvent::ShiftKey);
} else {
webkit_event.text[0] = webkit_event.unmodifiedText[0];
}
webkit_event.setKeyIdentifierFromWindowsKeyCode();
// TODO: IsAutoRepeat/IsKeyPad?
return webkit_event;
}
} // namespace content
|
