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1 /*
2  * Copyright (C) 2010 Apple Inc. All rights reserved.
3  * Portions Copyright (c) 2010 Motorola Mobility, Inc.  All rights reserved.
4  * Copyright (C) 2011 Igalia S.L.
5  *
6  * Redistribution and use in source and binary forms, with or without
7  * modification, are permitted provided that the following conditions
8  * are met:
9  * 1. Redistributions of source code must retain the above copyright
10  *    notice, this list of conditions and the following disclaimer.
11  * 2. Redistributions in binary form must reproduce the above copyright
12  *    notice, this list of conditions and the following disclaimer in the
13  *    documentation and/or other materials provided with the distribution.
14  *
15  * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
16  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
17  * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
18  * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
19  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
20  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
21  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
22  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
23  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
24  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
25  * THE POSSIBILITY OF SUCH DAMAGE.
26  */
27 
28 #include "config.h"
29 #include "WebEventFactory.h"
30 
31 #include "GtkVersioning.h"
32 #include "PlatformKeyboardEvent.h"
33 #include "Scrollbar.h"
34 #include "WindowsKeyboardCodes.h"
35 #include <gdk/gdk.h>
36 #include <gdk/gdkkeysyms.h>
37 #include <wtf/ASCIICType.h>
38 
39 using namespace WebCore;
40 
41 namespace WebKit {
42 
isGdkKeyCodeFromKeyPad(unsigned keyval)43 static inline bool isGdkKeyCodeFromKeyPad(unsigned keyval)
44 {
45     return keyval >= GDK_KP_Space && keyval <= GDK_KP_9;
46 }
47 
modifiersForEvent(const GdkEvent * event)48 static inline WebEvent::Modifiers modifiersForEvent(const GdkEvent* event)
49 {
50     unsigned modifiers = 0;
51     GdkModifierType state;
52 
53     ASSERT(gdk_event_get_state(event, &state));
54 
55     if (state & GDK_CONTROL_MASK)
56         modifiers |= WebEvent::ControlKey;
57     if (state & GDK_SHIFT_MASK)
58         modifiers |= WebEvent::ShiftKey;
59     if (state & GDK_MOD1_MASK)
60         modifiers |= WebEvent::AltKey;
61     if (state & GDK_META_MASK)
62         modifiers |= WebEvent::MetaKey;
63 
64     return static_cast<WebEvent::Modifiers>(modifiers);
65 }
66 
buttonForEvent(GdkEvent * event)67 static inline WebMouseEvent::Button buttonForEvent(GdkEvent* event)
68 {
69     unsigned button = 0;
70 
71     switch (event->type) {
72     case GDK_MOTION_NOTIFY:
73         button = WebMouseEvent::NoButton;
74         if (event->motion.state & GDK_BUTTON1_MASK)
75             button = WebMouseEvent::LeftButton;
76         else if (event->motion.state & GDK_BUTTON2_MASK)
77             button = WebMouseEvent::MiddleButton;
78         else if (event->motion.state & GDK_BUTTON3_MASK)
79             button = WebMouseEvent::RightButton;
80         break;
81     case GDK_BUTTON_PRESS:
82     case GDK_2BUTTON_PRESS:
83     case GDK_3BUTTON_PRESS:
84     case GDK_BUTTON_RELEASE:
85         if (event->button.button == 1)
86             button = WebMouseEvent::LeftButton;
87         else if (event->button.button == 2)
88             button = WebMouseEvent::MiddleButton;
89         else if (event->button.button == 3)
90             button = WebMouseEvent::RightButton;
91         break;
92     default:
93         ASSERT_NOT_REACHED();
94     }
95 
96     return static_cast<WebMouseEvent::Button>(button);
97 }
98 
createWebMouseEvent(GdkEvent * event,int currentClickCount)99 WebMouseEvent WebEventFactory::createWebMouseEvent(GdkEvent *event, int currentClickCount)
100 {
101     double x, y, xRoot, yRoot;
102     gdk_event_get_coords(event, &x, &y);
103     gdk_event_get_root_coords(event, &xRoot, &yRoot);
104 
105     WebEvent::Type type = static_cast<WebEvent::Type>(0);
106     switch (event->type) {
107     case GDK_MOTION_NOTIFY:
108         type = WebEvent::MouseMove;
109         break;
110     case GDK_BUTTON_PRESS:
111     case GDK_2BUTTON_PRESS:
112     case GDK_3BUTTON_PRESS:
113         type = WebEvent::MouseDown;
114         break;
115     case GDK_BUTTON_RELEASE:
116         type = WebEvent::MouseUp;
117         break;
118     default :
119         ASSERT_NOT_REACHED();
120     }
121 
122     return WebMouseEvent(type,
123                          buttonForEvent(event),
124                          IntPoint(x, y),
125                          IntPoint(xRoot, yRoot),
126                          0 /* deltaX */,
127                          0 /* deltaY */,
128                          0 /* deltaZ */,
129                          currentClickCount,
130                          static_cast<WebEvent::Modifiers>(0),
131                          gdk_event_get_time(event));
132 }
133 
createWebWheelEvent(GdkEventScroll * scrollEvent)134 WebWheelEvent WebEventFactory::createWebWheelEvent(GdkEventScroll* scrollEvent)
135 {
136     GdkEvent* event(reinterpret_cast<GdkEvent*>(scrollEvent));
137     double x, y, xRoot, yRoot;
138     gdk_event_get_coords(event, &x, &y);
139     gdk_event_get_root_coords(event, &xRoot, &yRoot);
140 
141     FloatSize wheelTicks;
142     switch (scrollEvent->direction) {
143     case GDK_SCROLL_UP:
144         wheelTicks = FloatSize(0, 1);
145         break;
146     case GDK_SCROLL_DOWN:
147         wheelTicks = FloatSize(0, -1);
148         break;
149     case GDK_SCROLL_LEFT:
150         wheelTicks = FloatSize(1, 0);
151         break;
152     case GDK_SCROLL_RIGHT:
153         wheelTicks = FloatSize(-1, 0);
154         break;
155     default:
156         ASSERT_NOT_REACHED();
157     }
158 
159     // FIXME: [GTK] Add a setting to change the pixels per line used for scrolling
160     // https://bugs.webkit.org/show_bug.cgi?id=54826
161     float step = static_cast<float>(Scrollbar::pixelsPerLineStep());
162     FloatSize delta(wheelTicks.width() * step, wheelTicks.height() * step);
163 
164     return WebWheelEvent(WebEvent::Wheel,
165                          IntPoint(x, y),
166                          IntPoint(xRoot, yRoot),
167                          delta,
168                          wheelTicks,
169                          WebWheelEvent::ScrollByPixelWheelEvent,
170                          modifiersForEvent(event),
171                          gdk_event_get_time(event));
172 }
173 
createWebKeyboardEvent(const GdkEventKey * event)174 WebKeyboardEvent WebEventFactory::createWebKeyboardEvent(const GdkEventKey* event)
175 {
176     return WebKeyboardEvent((event->type == GDK_KEY_RELEASE) ? WebEvent::KeyUp : WebEvent::KeyDown,
177                             PlatformKeyboardEvent::singleCharacterString(event->keyval),
178                             PlatformKeyboardEvent::singleCharacterString(event->keyval),
179                             PlatformKeyboardEvent::keyIdentifierForGdkKeyCode(event->keyval),
180                             PlatformKeyboardEvent::windowsKeyCodeForGdkKeyCode(event->keyval),
181                             static_cast<int>(event->keyval),
182                             0 /* macCharCode */,
183                             false /* isAutoRepeat */,
184                             isGdkKeyCodeFromKeyPad(event->keyval),
185                             false /* isSystemKey */,
186                             modifiersForEvent(reinterpret_cast<const GdkEvent*>(event)),
187                             gdk_event_get_time(reinterpret_cast<const GdkEvent*>(event)));
188 }
189 
190 } // namespace WebKit
191