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      1 /*
      2  * Copyright (C) 2004, 2005, 2006, 2010 Apple 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 
     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 
     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 
     56 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 
     66 void Widget::removeFromParent()
     67 {
     68     if (parent())
     69         parent()->removeChild(this);
     70 }
     71 
     72 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 
     81 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 
     90 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 
     99 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)
    109 void Widget::setBoundsSize(const IntSize&)
    110 {
    111 }
    112 
    113 IntRect Widget::convertFromRootToContainingWindow(const Widget*, const IntRect& rect)
    114 {
    115     return rect;
    116 }
    117 
    118 IntRect Widget::convertFromContainingWindowToRoot(const Widget*, const IntRect& rect)
    119 {
    120     return rect;
    121 }
    122 
    123 IntPoint Widget::convertFromRootToContainingWindow(const Widget*, const IntPoint& point)
    124 {
    125     return point;
    126 }
    127 
    128 IntPoint Widget::convertFromContainingWindowToRoot(const Widget*, const IntPoint& point)
    129 {
    130     return point;
    131 }
    132 #endif
    133 
    134 IntRect Widget::convertToContainingView(const IntRect& localRect) const
    135 {
    136     if (const ScrollView* parentScrollView = parent()) {
    137         IntRect parentRect(localRect);
    138         parentRect.setLocation(parentScrollView->convertChildToSelf(this, localRect.location()));
    139         return parentRect;
    140     }
    141     return localRect;
    142 }
    143 
    144 IntRect Widget::convertFromContainingView(const IntRect& parentRect) const
    145 {
    146     if (const ScrollView* parentScrollView = parent()) {
    147         IntRect localRect = parentRect;
    148         localRect.setLocation(parentScrollView->convertSelfToChild(this, localRect.location()));
    149         return localRect;
    150     }
    151 
    152     return parentRect;
    153 }
    154 
    155 IntPoint Widget::convertToContainingView(const IntPoint& localPoint) const
    156 {
    157     if (const ScrollView* parentScrollView = parent())
    158         return parentScrollView->convertChildToSelf(this, localPoint);
    159 
    160     return localPoint;
    161 }
    162 
    163 IntPoint Widget::convertFromContainingView(const IntPoint& parentPoint) const
    164 {
    165     if (const ScrollView* parentScrollView = parent())
    166         return parentScrollView->convertSelfToChild(this, parentPoint);
    167 
    168     return parentPoint;
    169 }
    170 
    171 #if !PLATFORM(EFL)
    172 void Widget::frameRectsChanged()
    173 {
    174 }
    175 #endif
    176 
    177 } // namespace WebCore
    178