external/webkit r30707

1 files changed, 137 insertions, 0 deletions

diff --git a/WebCore/rendering/InlineTextBox.h b/WebCore/rendering/InlineTextBox.h
new file mode 100644
index 0000000..f6fa7da
--- /dev/null
+++ b/WebCore/rendering/InlineTextBox.h
@@ -0,0 +1,137 @@
+/*
+ * This file is part of the DOM implementation for KDE.
+ *
+ * (C) 1999 Lars Knoll (knoll@kde.org)
+ * (C) 2000 Dirk Mueller (mueller@kde.org)
+ * Copyright (C) 2004, 2005, 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 InlineTextBox_h
+#define InlineTextBox_h
+
+#include "DocumentMarker.h"
+#include "InlineRunBox.h"
+#include "RenderText.h"
+
+namespace WebCore {
+
+const unsigned short cNoTruncation = USHRT_MAX;
+const unsigned short cFullTruncation = USHRT_MAX - 1;
+
+class String;
+class StringImpl;
+class HitTestResult;
+class Position;
+
+struct CompositionUnderline;
+
+// Helper functions shared by InlineTextBox / SVGRootInlineBox
+void updateGraphicsContext(GraphicsContext* context, const Color& fillColor, const Color& strokeColor, float strokeThickness);
+Color correctedTextColor(Color textColor, Color backgroundColor);
+
+class InlineTextBox : public InlineRunBox {
+public:
+    InlineTextBox(RenderObject* obj)
+        : InlineRunBox(obj)
+        , m_start(0)
+        , m_len(0)
+        , m_truncation(cNoTruncation)
+    {
+    }
+
+    InlineTextBox* nextTextBox() const { return static_cast<InlineTextBox*>(nextLineBox()); }
+    InlineTextBox* prevTextBox() const { return static_cast<InlineTextBox*>(prevLineBox()); }
+
+    unsigned start() const { return m_start; }
+    unsigned end() const { return m_len ? m_start + m_len - 1 : m_start; }
+    unsigned len() const { return m_len; }
+
+    void setStart(unsigned start) { m_start = start; }
+    void setLen(unsigned len) { m_len = len; }
+
+    void offsetRun(int d) { m_start += d; }
+
+    virtual int selectionTop();
+    virtual int selectionHeight();
+
+    virtual IntRect selectionRect(int absx, int absy, int startPos, int endPos);
+    bool isSelected(int startPos, int endPos) const;
+    void selectionStartEnd(int& sPos, int& ePos);
+
+    virtual void paint(RenderObject::PaintInfo&, int tx, int ty);
+    virtual bool nodeAtPoint(const HitTestRequest&, HitTestResult&, int x, int y, int tx, int ty);
+
+    RenderText* textObject() const;
+
+    virtual void deleteLine(RenderArena*);
+    virtual void extractLine();
+    virtual void attachLine();
+
+    virtual RenderObject::SelectionState selectionState();
+
+    virtual void clearTruncation() { m_truncation = cNoTruncation; }
+    virtual int placeEllipsisBox(bool ltr, int blockEdge, int ellipsisWidth, bool& foundBox);
+
+    virtual bool isLineBreak() const;
+
+    void setSpaceAdd(int add) { m_width -= m_toAdd; m_toAdd = add; m_width += m_toAdd; }
+    int spaceAdd() { return m_toAdd; }
+
+    virtual bool isInlineTextBox() { return true; }    
+    virtual bool isText() const { return m_treatAsText; }
+    void setIsText(bool b) { m_treatAsText = b; }
+
+    void paintDecoration(GraphicsContext*, int tx, int ty, int decoration);
+    void paintSelection(GraphicsContext*, int tx, int ty, RenderStyle*, const Font*);
+    void paintCompositionBackground(GraphicsContext*, int tx, int ty, RenderStyle*, const Font*, int startPos, int endPos);
+    void paintDocumentMarkers(GraphicsContext*, int tx, int ty, RenderStyle*, const Font*, bool background);
+    void paintSpellingOrGrammarMarker(GraphicsContext*, int tx, int ty, DocumentMarker, RenderStyle*, const Font*, bool grammar);
+    void paintTextMatchMarker(GraphicsContext*, int tx, int ty, DocumentMarker, RenderStyle*, const Font*);
+    void paintCompositionUnderline(GraphicsContext*, int tx, int ty, const CompositionUnderline&);
+#if PLATFORM(MAC)
+    void paintCustomHighlight(int tx, int ty, const AtomicString& type);
+#endif
+    virtual int caretMinOffset() const;
+    virtual int caretMaxOffset() const;
+    virtual unsigned caretMaxRenderedOffset() const;
+
+    int textPos() const;
+    virtual int offsetForPosition(int x, bool includePartialGlyphs = true) const;
+    virtual int positionForOffset(int offset) const;
+
+    bool containsCaretOffset(int offset) const; // false for offset after line break
+
+    int m_start;
+    unsigned short m_len;
+
+    unsigned short m_truncation; // Where to truncate when text overflow is applied.  We use special constants to
+                      // denote no truncation (the whole run paints) and full truncation (nothing paints at all).
+
+private:
+    friend class RenderText;
+};
+
+inline RenderText* InlineTextBox::textObject() const
+{
+    return static_cast<RenderText*>(m_object);
+}
+
+} // namespace WebCore
+
+#endif // InlineTextBox_h