root/Source/platform/Widget.cpp

DEFINITIONS

1. m_parentVisible
2. setParent
3. root
4. convertFromRootView
5. convertToRootView
6. convertFromRootView
7. convertToRootView
8. convertFromContainingWindow
9. convertToContainingWindow
10. convertFromContainingWindow
11. convertToContainingWindow
12. convertToContainingView
13. convertFromContainingView
14. convertToContainingView
15. convertFromContainingView
16. convertChildToSelf
17. convertSelfToChild

/*
 * Copyright (C) 2004, 2005, 2006, 2010 Apple Inc. All rights reserved.
 * Copyright (C) 2013 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:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. 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.
 *
 * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``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 APPLE COMPUTER, INC. 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 "config.h"
#include "platform/Widget.h"


#include "wtf/Assertions.h"

namespace WebCore {

Widget::Widget()
    : m_parent(0)
    , m_selfVisible(false)
    , m_parentVisible(false)
{
}

Widget::~Widget()
{
    ASSERT(!parent());
}

void Widget::setParent(Widget* widget)
{
    ASSERT(!widget || !m_parent);
    if (!widget || !widget->isVisible())
        setParentVisible(false);
    m_parent = widget;
    if (widget && widget->isVisible())
        setParentVisible(true);
}

Widget* Widget::root() const
{
    const Widget* top = this;
    while (top->parent())
        top = top->parent();
    if (top->isFrameView())
        return const_cast<Widget*>(static_cast<const Widget*>(top));
    return 0;
}

IntRect Widget::convertFromRootView(const IntRect& rootRect) const
{
    if (const Widget* parentWidget = parent()) {
        IntRect parentRect = parentWidget->convertFromRootView(rootRect);
        return convertFromContainingView(parentRect);
    }
    return rootRect;
}

IntRect Widget::convertToRootView(const IntRect& localRect) const
{
    if (const Widget* parentWidget = parent()) {
        IntRect parentRect = convertToContainingView(localRect);
        return parentWidget->convertToRootView(parentRect);
    }
    return localRect;
}

IntPoint Widget::convertFromRootView(const IntPoint& rootPoint) const
{
    if (const Widget* parentWidget = parent()) {
        IntPoint parentPoint = parentWidget->convertFromRootView(rootPoint);
        return convertFromContainingView(parentPoint);
    }
    return rootPoint;
}

IntPoint Widget::convertToRootView(const IntPoint& localPoint) const
{
    if (const Widget* parentWidget = parent()) {
        IntPoint parentPoint = convertToContainingView(localPoint);
        return parentWidget->convertToRootView(parentPoint);
    }
    return localPoint;
}

IntRect Widget::convertFromContainingWindow(const IntRect& windowRect) const
{
    if (const Widget* parentWidget = parent()) {
        IntRect parentRect = parentWidget->convertFromContainingWindow(windowRect);
        return convertFromContainingView(parentRect);
    }
    return windowRect;
}

IntRect Widget::convertToContainingWindow(const IntRect& localRect) const
{
    if (const Widget* parentWidget = parent()) {
        IntRect parentRect = convertToContainingView(localRect);
        return parentWidget->convertToContainingWindow(parentRect);
    }
    return localRect;
}

IntPoint Widget::convertFromContainingWindow(const IntPoint& windowPoint) const
{
    if (const Widget* parentWidget = parent()) {
        IntPoint parentPoint = parentWidget->convertFromContainingWindow(windowPoint);
        return convertFromContainingView(parentPoint);
    }
    return windowPoint;
}

IntPoint Widget::convertToContainingWindow(const IntPoint& localPoint) const
{
    if (const Widget* parentWidget = parent()) {
        IntPoint parentPoint = convertToContainingView(localPoint);
        return parentWidget->convertToContainingWindow(parentPoint);
    }
    return localPoint;
}

IntRect Widget::convertToContainingView(const IntRect& localRect) const
{
    if (const Widget* parentWidget = parent()) {
        IntRect parentRect(localRect);
        parentRect.setLocation(parentWidget->convertChildToSelf(this, localRect.location()));
        return parentRect;
    }
    return localRect;
}

IntRect Widget::convertFromContainingView(const IntRect& parentRect) const
{
    if (const Widget* parentWidget = parent()) {
        IntRect localRect = parentRect;
        localRect.setLocation(parentWidget->convertSelfToChild(this, localRect.location()));
        return localRect;
    }

    return parentRect;
}

IntPoint Widget::convertToContainingView(const IntPoint& localPoint) const
{
    if (const Widget* parentWidget = parent())
        return parentWidget->convertChildToSelf(this, localPoint);

    return localPoint;
}

IntPoint Widget::convertFromContainingView(const IntPoint& parentPoint) const
{
    if (const Widget* parentWidget = parent())
        return parentWidget->convertSelfToChild(this, parentPoint);

    return parentPoint;
}

IntPoint Widget::convertChildToSelf(const Widget*, const IntPoint& point) const
{
    return point;
}

IntPoint Widget::convertSelfToChild(const Widget*, const IntPoint& point) const
{
    return point;
}

} // namespace WebCore