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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 "FloatRect.h"
#include "LayoutTypes.h"
#include "TextDirection.h"
#include <wtf/Forward.h>
#include <wtf/ListHashSet.h>
#include <wtf/OwnPtr.h>
#include <wtf/RefPtr.h>
namespace WebCore {
class Element;
class Frame;
#if ENABLE(VIDEO)
class HTMLMediaElement;
#endif
class Image;
class KURL;
class Node;
class RenderRegion;
class Scrollbar;
enum ShadowContentFilterPolicy { DoNotAllowShadowContent, AllowShadowContent };
class HitTestResult {
public:
typedef ListHashSet<RefPtr<Node> > NodeSet;
HitTestResult();
HitTestResult(const LayoutPoint&);
// Pass non-negative padding values to perform a rect-based hit test.
HitTestResult(const LayoutPoint& centerPoint, unsigned topPadding, unsigned rightPadding, unsigned bottomPadding, unsigned leftPadding, ShadowContentFilterPolicy);
HitTestResult(const HitTestResult&);
~HitTestResult();
HitTestResult& operator=(const HitTestResult&);
Node* innerNode() const { return m_innerNode.get(); }
Node* innerNonSharedNode() const { return m_innerNonSharedNode.get(); }
LayoutPoint point() const { return m_point; }
IntPoint roundedPoint() const { return roundedIntPoint(m_point); }
LayoutPoint 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; }
RenderRegion* region() const { return m_region; }
void setRegion(RenderRegion* region) { m_region = region; }
void setToNonShadowAncestor();
ShadowContentFilterPolicy shadowContentFilterPolicy() const { return m_shadowContentFilterPolicy; }
void setInnerNode(Node*);
void setInnerNonSharedNode(Node*);
void setPoint(const LayoutPoint& p) { m_point = p; }
void setLocalPoint(const LayoutPoint& 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 innerTextIfTruncated(TextDirection&) const;
String altDisplayString() const;
String titleDisplayString() const;
Image* image() const;
IntRect imageRect() const;
KURL absoluteImageURL() const;
KURL absolutePDFURL() const;
KURL absoluteMediaURL() const;
KURL absoluteLinkURL() const;
String textContent() const;
bool isLiveLink() const;
bool isContentEditable() const;
void toggleMediaControlsDisplay() const;
void toggleMediaLoopPlayback() const;
void enterFullscreenForVideo() const;
bool mediaControlsEnabled() const;
bool mediaLoopEnabled() const;
bool mediaPlaying() const;
bool mediaSupportsFullscreen() const;
void toggleMediaPlayState() const;
bool mediaHasAudio() const;
bool mediaIsVideo() const;
bool mediaMuted() const;
void toggleMediaMuteState() const;
// Rect-based hit test related methods.
bool isRectBasedTest() const { return m_isRectBased; }
IntRect rectForPoint(const LayoutPoint&) const;
static IntRect rectForPoint(const LayoutPoint&, unsigned topPadding, unsigned rightPadding, unsigned bottomPadding, unsigned leftPadding);
int topPadding() const { return m_topPadding; }
int rightPadding() const { return m_rightPadding; }
int bottomPadding() const { return m_bottomPadding; }
int leftPadding() const { return m_leftPadding; }
// 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*, const LayoutPoint& pointInContainer, const IntRect& = IntRect());
bool addNodeToRectBasedTestResult(Node*, const LayoutPoint& pointInContainer, const FloatRect&);
void append(const HitTestResult&);
// If m_rectBasedTestResult is 0 then set it to a new NodeSet. Return *m_rectBasedTestResult. Lazy allocation makes
// sense because the NodeSet is seldom necessary, and it's somewhat expensive to allocate and initialize. This method does
// the same thing as mutableRectBasedTestResult(), but here the return value is const.
const NodeSet& rectBasedTestResult() const;
private:
NodeSet& mutableRectBasedTestResult(); // See above.
#if ENABLE(VIDEO)
HTMLMediaElement* mediaElement() const;
#endif
RefPtr<Node> m_innerNode;
RefPtr<Node> m_innerNonSharedNode;
LayoutPoint m_point;
LayoutPoint 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;
int m_topPadding;
int m_rightPadding;
int m_bottomPadding;
int m_leftPadding;
ShadowContentFilterPolicy m_shadowContentFilterPolicy;
RenderRegion* m_region; // The region we're inside.
mutable OwnPtr<NodeSet> m_rectBasedTestResult;
};
// Formula:
// x = p.x() - rightPadding
// y = p.y() - topPadding
// width = leftPadding + rightPadding + 1
// height = topPadding + bottomPadding + 1
inline IntRect HitTestResult::rectForPoint(const LayoutPoint& point) const
{
return rectForPoint(point, m_topPadding, m_rightPadding, m_bottomPadding, m_leftPadding);
}
String displayString(const String&, const Node*);
} // namespace WebCore
#endif // HitTestResult_h
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