--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/WebCore/rendering/HitTestResult.h	Fri Sep 17 09:02:29 2010 +0300
@@ -0,0 +1,142 @@
+/*
+ * 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/ListHashSet.h>
+#include <wtf/RefPtr.h>
+
+namespace WebCore {
+
+class Element;
+class Frame;
+class Image;
+class IntRect;
+class KURL;
+class Node;
+class Scrollbar;
+class String;
+
+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() >= 0 ? m_padding.width() : 0; }
+    int paddingHeight() const { return m_padding.height() >= 0 ? m_padding.height() : 0; }
+    // 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