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/*
* Copyright (C) 2006 Apple Computer, Inc.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public License
* along with this library; see the file COPYING.LIB. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*
*/
#ifndef HitTestResult_h
#define HitTestResult_h
#include "IntPoint.h"
#include "IntRect.h"
#include "IntSize.h"
#include "TextDirection.h"
#include <wtf/Forward.h>
#include <wtf/ListHashSet.h>
#include <wtf/RefPtr.h>
namespace WebCore {
class Element;
class Frame;
class Image;
class IntRect;
class KURL;
class Node;
class Scrollbar;
class HitTestResult {
public:
HitTestResult(const IntPoint&);
// Pass a non-negative IntSize value as padding to perform a rect-based hit test.
HitTestResult(const IntPoint& centerPoint, const IntSize& padding);
HitTestResult(const HitTestResult&);
~HitTestResult();
HitTestResult& operator=(const HitTestResult&);
Node* innerNode() const { return m_innerNode.get(); }
Node* innerNonSharedNode() const { return m_innerNonSharedNode.get(); }
IntPoint point() const { return m_point; }
IntPoint localPoint() const { return m_localPoint; }
Element* URLElement() const { return m_innerURLElement.get(); }
Scrollbar* scrollbar() const { return m_scrollbar.get(); }
bool isOverWidget() const { return m_isOverWidget; }
void setToNonShadowAncestor();
void setInnerNode(Node*);
void setInnerNonSharedNode(Node*);
void setPoint(const IntPoint& p) { m_point = p; }
void setLocalPoint(const IntPoint& p) { m_localPoint = p; }
void setURLElement(Element*);
void setScrollbar(Scrollbar*);
void setIsOverWidget(bool b) { m_isOverWidget = b; }
Frame* targetFrame() const;
bool isSelected() const;
String spellingToolTip(TextDirection&) const;
String replacedString() const;
String title(TextDirection&) const;
String altDisplayString() const;
String titleDisplayString() const;
Image* image() const;
IntRect imageRect() const;
KURL absoluteImageURL() const;
KURL absoluteMediaURL() const;
KURL absoluteLinkURL() const;
String textContent() const;
bool isLiveLink() const;
bool isContentEditable() const;
// Rect-based hit test related methods.
bool isRectBasedTest() const { return m_isRectBased; }
IntRect rectFromPoint(int x, int y) const;
IntRect rectFromPoint(const IntPoint&) const;
IntSize padding() const { return m_padding; }
int paddingWidth() const { return m_padding.width(); }
int paddingHeight() const { return m_padding.height(); }
// Returns true if it is rect-based hit test and needs to continue until the rect is fully
// enclosed by the boundaries of a node.
bool addNodeToRectBasedTestResult(Node*, int x, int y, const IntRect& rect = IntRect());
const ListHashSet<RefPtr<Node> >& rectBasedTestResult() const { return m_rectBasedTestResult; }
void append(const HitTestResult&);
private:
RefPtr<Node> m_innerNode;
RefPtr<Node> m_innerNonSharedNode;
IntPoint m_point;
IntPoint m_localPoint; // A point in the local coordinate space of m_innerNonSharedNode's renderer. Allows us to efficiently
// determine where inside the renderer we hit on subsequent operations.
RefPtr<Element> m_innerURLElement;
RefPtr<Scrollbar> m_scrollbar;
bool m_isOverWidget; // Returns true if we are over a widget (and not in the border/padding area of a RenderWidget for example).
bool m_isRectBased;
IntSize m_padding;
ListHashSet<RefPtr<Node> > m_rectBasedTestResult;
};
inline IntRect HitTestResult::rectFromPoint(int x, int y) const
{
return rectFromPoint(IntPoint(x, y));
}
// Formula:
// x = p.x() - padding.width()
// y = p.y() - padding.height()
// width = 2 * padding.width() + 1
// height = 2 * m_padding.height() + 1
inline IntRect HitTestResult::rectFromPoint(const IntPoint& point) const
{
IntPoint realPoint(point);
IntSize realPadding(m_padding);
// Real IntPoint for the rect.
realPadding.clampNegativeToZero();
realPoint -= realPadding;
// Real IntSize for the rect.
realPadding.scale(2);
realPadding += IntSize(1, 1);
return IntRect(realPoint, realPadding);
}
String displayString(const String&, const Node*);
} // namespace WebCore
#endif // HitTestResult_h
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