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Diffstat (limited to 'src/3rdparty/webkit/WebCore/rendering/RenderText.h')
| -rw-r--r-- | src/3rdparty/webkit/WebCore/rendering/RenderText.h | 183 |
1 files changed, 183 insertions, 0 deletions
diff --git a/src/3rdparty/webkit/WebCore/rendering/RenderText.h b/src/3rdparty/webkit/WebCore/rendering/RenderText.h new file mode 100644 index 0000000..4c62638 --- /dev/null +++ b/src/3rdparty/webkit/WebCore/rendering/RenderText.h @@ -0,0 +1,183 @@ +/* + * (C) 1999 Lars Knoll (knoll@kde.org) + * (C) 2000 Dirk Mueller (mueller@kde.org) + * Copyright (C) 2004, 2005, 2006, 2007 Apple Inc. All rights reserved. + * + * 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 RenderText_h +#define RenderText_h + +#include "RenderObject.h" + +namespace WebCore { + +class InlineTextBox; +class StringImpl; + +class RenderText : public RenderObject { +public: + RenderText(Node*, PassRefPtr<StringImpl>); +#ifndef NDEBUG + virtual ~RenderText(); +#endif + + virtual const char* renderName() const; + + virtual bool isTextFragment() const; + virtual bool isWordBreak() const; + + virtual PassRefPtr<StringImpl> originalText() const; + + void extractTextBox(InlineTextBox*); + void attachTextBox(InlineTextBox*); + void removeTextBox(InlineTextBox*); + + virtual void destroy(); + + StringImpl* text() const { return m_text.get(); } + + virtual InlineBox* createInlineBox(bool makePlaceHolderBox, bool isRootLineBox, bool isOnlyRun = false); + virtual InlineTextBox* createInlineTextBox(); + virtual void dirtyLineBoxes(bool fullLayout, bool isRootInlineBox = false); + + virtual void absoluteRects(Vector<IntRect>&, int tx, int ty, bool topLevel = true); + virtual void addLineBoxRects(Vector<IntRect>&, unsigned startOffset = 0, unsigned endOffset = UINT_MAX, bool useSelectionHeight = false); + + virtual void absoluteQuads(Vector<FloatQuad>&, bool topLevel = true); + virtual void collectAbsoluteLineBoxQuads(Vector<FloatQuad>&, unsigned startOffset = 0, unsigned endOffset = UINT_MAX, bool useSelectionHeight = false); + + virtual VisiblePosition positionForCoordinates(int x, int y); + + const UChar* characters() const { return m_text->characters(); } + unsigned textLength() const { return m_text->length(); } // non virtual implementation of length() + virtual void position(InlineBox*); + + virtual unsigned width(unsigned from, unsigned len, const Font&, int xPos) const; + virtual unsigned width(unsigned from, unsigned len, int xPos, bool firstLine = false) const; + virtual int width() const; + virtual int height() const; + + virtual int lineHeight(bool firstLine, bool isRootLineBox = false) const; + + virtual int minPrefWidth() const; + virtual int maxPrefWidth() const; + + void trimmedPrefWidths(int leadWidth, + int& beginMinW, bool& beginWS, + int& endMinW, bool& endWS, + bool& hasBreakableChar, bool& hasBreak, + int& beginMaxW, int& endMaxW, + int& minW, int& maxW, bool& stripFrontSpaces); + + // returns the minimum x position of all runs relative to the parent. + // defaults to 0. + int minXPos() const; + + virtual int xPos() const; + virtual int yPos() const; + + virtual int verticalPositionHint(bool firstLine) const; + + void setText(PassRefPtr<StringImpl>, bool force = false); + void setTextWithOffset(PassRefPtr<StringImpl>, unsigned offset, unsigned len, bool force = false); + + virtual bool canBeSelectionLeaf() const { return true; } + virtual SelectionState selectionState() const { return static_cast<SelectionState>(m_selectionState); } + virtual void setSelectionState(SelectionState s); + virtual IntRect selectionRect(bool clipToVisibleContent = true); + virtual IntRect localCaretRect(InlineBox*, int caretOffset, int* extraWidthToEndOfLine = 0); + + virtual int marginLeft() const { return style()->marginLeft().calcMinValue(0); } + virtual int marginRight() const { return style()->marginRight().calcMinValue(0); } + + virtual IntRect absoluteClippedOverflowRect(); + + InlineTextBox* firstTextBox() const { return m_firstTextBox; } + InlineTextBox* lastTextBox() const { return m_lastTextBox; } + + virtual int caretMinOffset() const; + virtual int caretMaxOffset() const; + virtual unsigned caretMaxRenderedOffset() const; + + virtual int previousOffset(int current) const; + virtual int nextOffset(int current) const; + + bool containsReversedText() const { return m_containsReversedText; } + + InlineTextBox* findNextInlineTextBox(int offset, int& pos) const; + + bool allowTabs() const { return !style()->collapseWhiteSpace(); } + + void checkConsistency() const; + +protected: + virtual void styleDidChange(RenderStyle::Diff, const RenderStyle* oldStyle); + + virtual void setTextInternal(PassRefPtr<StringImpl>); + virtual void calcPrefWidths(int leadWidth); + virtual UChar previousCharacter(); + +private: + // Make length() private so that callers that have a RenderText* + // will use the more efficient textLength() instead, while + // callers with a RenderObject* can continue to use length(). + virtual unsigned length() const { return textLength(); } + + virtual void paint(PaintInfo&, int, int) { ASSERT_NOT_REACHED(); } + virtual void layout() { ASSERT_NOT_REACHED(); } + virtual bool nodeAtPoint(const HitTestRequest&, HitTestResult&, int, int, int, int, HitTestAction) { ASSERT_NOT_REACHED(); return false; } + + void deleteTextBoxes(); + bool containsOnlyWhitespace(unsigned from, unsigned len) const; + int widthFromCache(const Font&, int start, int len, int xPos) const; + bool isAllASCII() const { return m_isAllASCII; } + + RefPtr<StringImpl> m_text; + + InlineTextBox* m_firstTextBox; + InlineTextBox* m_lastTextBox; + + int m_minWidth; + int m_maxWidth; + int m_beginMinWidth; + int m_endMinWidth; + + unsigned m_selectionState : 3; // enums on Windows are signed, so this needs to be unsigned to prevent it turning negative. + bool m_hasBreakableChar : 1; // Whether or not we can be broken into multiple lines. + bool m_hasBreak : 1; // Whether or not we have a hard break (e.g., <pre> with '\n'). + bool m_hasTab : 1; // Whether or not we have a variable width tab character (e.g., <pre> with '\t'). + bool m_hasBeginWS : 1; // Whether or not we begin with WS (only true if we aren't pre) + bool m_hasEndWS : 1; // Whether or not we end with WS (only true if we aren't pre) + bool m_linesDirty : 1; // This bit indicates that the text run has already dirtied specific + // line boxes, and this hint will enable layoutInlineChildren to avoid + // just dirtying everything when character data is modified (e.g., appended/inserted + // or removed). + bool m_containsReversedText : 1; + bool m_isAllASCII : 1; +}; + +#ifdef NDEBUG +inline void RenderText::checkConsistency() const +{ +} +#endif + +} // namespace WebCore + +#endif // RenderText_h |