1 /*
2 * Copyright (C) 2004, 2005, 2006 Apple Computer, Inc. All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 * 1. Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution.
12 *
13 * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR
17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
24 */
25
26 #include "config.h"
27 #include "Widget.h"
28
29 #include "IntRect.h"
30 #include "ScrollView.h"
31
32 #include <wtf/Assertions.h>
33
34 namespace WebCore {
35
init(PlatformWidget widget)36 void Widget::init(PlatformWidget widget)
37 {
38 m_parent = 0;
39 m_selfVisible = false;
40 m_parentVisible = false;
41 m_widget = widget;
42 if (m_widget)
43 retainPlatformWidget();
44 }
45
setParent(ScrollView * view)46 void Widget::setParent(ScrollView* view)
47 {
48 ASSERT(!view || !m_parent);
49 if (!view || !view->isVisible())
50 setParentVisible(false);
51 m_parent = view;
52 if (view && view->isVisible())
53 setParentVisible(true);
54 }
55
root() const56 ScrollView* Widget::root() const
57 {
58 const Widget* top = this;
59 while (top->parent())
60 top = top->parent();
61 if (top->isFrameView())
62 return const_cast<ScrollView*>(static_cast<const ScrollView*>(top));
63 return 0;
64 }
65
removeFromParent()66 void Widget::removeFromParent()
67 {
68 if (parent())
69 parent()->removeChild(this);
70 }
71
convertFromContainingWindow(const IntRect & windowRect) const72 IntRect Widget::convertFromContainingWindow(const IntRect& windowRect) const
73 {
74 if (const ScrollView* parentScrollView = parent()) {
75 IntRect parentRect = parentScrollView->convertFromContainingWindow(windowRect);
76 return convertFromContainingView(parentRect);
77 }
78 return convertFromContainingWindowToRoot(this, windowRect);
79 }
80
convertToContainingWindow(const IntRect & localRect) const81 IntRect Widget::convertToContainingWindow(const IntRect& localRect) const
82 {
83 if (const ScrollView* parentScrollView = parent()) {
84 IntRect parentRect = convertToContainingView(localRect);
85 return parentScrollView->convertToContainingWindow(parentRect);
86 }
87 return convertFromRootToContainingWindow(this, localRect);
88 }
89
convertFromContainingWindow(const IntPoint & windowPoint) const90 IntPoint Widget::convertFromContainingWindow(const IntPoint& windowPoint) const
91 {
92 if (const ScrollView* parentScrollView = parent()) {
93 IntPoint parentPoint = parentScrollView->convertFromContainingWindow(windowPoint);
94 return convertFromContainingView(parentPoint);
95 }
96 return convertFromContainingWindowToRoot(this, windowPoint);
97 }
98
convertToContainingWindow(const IntPoint & localPoint) const99 IntPoint Widget::convertToContainingWindow(const IntPoint& localPoint) const
100 {
101 if (const ScrollView* parentScrollView = parent()) {
102 IntPoint parentPoint = convertToContainingView(localPoint);
103 return parentScrollView->convertToContainingWindow(parentPoint);
104 }
105 return convertFromRootToContainingWindow(this, localPoint);
106 }
107
108 #if !PLATFORM(MAC)
convertFromRootToContainingWindow(const Widget *,const IntRect & rect)109 IntRect Widget::convertFromRootToContainingWindow(const Widget*, const IntRect& rect)
110 {
111 return rect;
112 }
113
convertFromContainingWindowToRoot(const Widget *,const IntRect & rect)114 IntRect Widget::convertFromContainingWindowToRoot(const Widget*, const IntRect& rect)
115 {
116 return rect;
117 }
118
convertFromRootToContainingWindow(const Widget *,const IntPoint & point)119 IntPoint Widget::convertFromRootToContainingWindow(const Widget*, const IntPoint& point)
120 {
121 return point;
122 }
123
convertFromContainingWindowToRoot(const Widget *,const IntPoint & point)124 IntPoint Widget::convertFromContainingWindowToRoot(const Widget*, const IntPoint& point)
125 {
126 return point;
127 }
128 #endif
129
130 #if !PLATFORM(MAC) && !PLATFORM(GTK) && !PLATFORM(ANDROID)
releasePlatformWidget()131 void Widget::releasePlatformWidget()
132 {
133 }
134
retainPlatformWidget()135 void Widget::retainPlatformWidget()
136 {
137 }
138 #endif
139
convertToContainingView(const IntRect & localRect) const140 IntRect Widget::convertToContainingView(const IntRect& localRect) const
141 {
142 if (const ScrollView* parentScrollView = parent()) {
143 IntRect parentRect(localRect);
144 parentRect.setLocation(parentScrollView->convertChildToSelf(this, localRect.location()));
145 return parentRect;
146 }
147 return localRect;
148 }
149
convertFromContainingView(const IntRect & parentRect) const150 IntRect Widget::convertFromContainingView(const IntRect& parentRect) const
151 {
152 if (const ScrollView* parentScrollView = parent()) {
153 IntRect localRect = parentRect;
154 localRect.setLocation(parentScrollView->convertSelfToChild(this, localRect.location()));
155 return localRect;
156 }
157
158 return parentRect;
159 }
160
convertToContainingView(const IntPoint & localPoint) const161 IntPoint Widget::convertToContainingView(const IntPoint& localPoint) const
162 {
163 if (const ScrollView* parentScrollView = parent())
164 return parentScrollView->convertChildToSelf(this, localPoint);
165
166 return localPoint;
167 }
168
convertFromContainingView(const IntPoint & parentPoint) const169 IntPoint Widget::convertFromContainingView(const IntPoint& parentPoint) const
170 {
171 if (const ScrollView* parentScrollView = parent())
172 return parentScrollView->convertSelfToChild(this, parentPoint);
173
174 return parentPoint;
175 }
176
177 } // namespace WebCore
178