| /* |
| * This file is part of the DOM implementation for KDE. |
| * |
| * (C) 1999 Lars Knoll (knoll@kde.org) |
| * (C) 2000 Dirk Mueller (mueller@kde.org) |
| * |
| * 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., 59 Temple Place - Suite 330, |
| * Boston, MA 02111-1307, USA. |
| * |
| * $Id$ |
| */ |
| #ifndef RENDERTEXT_H |
| #define RENDERTEXT_H |
| |
| #include <qvector.h> |
| #include <qarray.h> |
| |
| #include "dom_string.h" |
| #include "dom_stringimpl.h" |
| #include "render_object.h" |
| |
| #include <assert.h> |
| |
| class QPainter; |
| class QFontMetrics; |
| |
| namespace khtml |
| { |
| class RenderText; |
| class RenderStyle; |
| |
| class TextSlave |
| { |
| public: |
| TextSlave(int x, int y, QChar *text, int len, |
| int baseline, int width, |
| bool reversed = false, bool firstLine = false) |
| { |
| m_x = x; |
| m_y = y; |
| m_text = text; |
| m_len = len; |
| m_baseline = baseline; |
| m_width = width; |
| m_reversed = reversed; |
| m_firstLine = firstLine; |
| } |
| ~TextSlave(); |
| void print( QPainter *p, int _tx, int _ty); |
| void printDecoration( QPainter *pt, RenderText* p, int _tx, int _ty, int decoration, bool begin, bool end); |
| void printBoxDecorations(QPainter *p, RenderStyle* style, RenderText *parent, int _tx, int _ty, bool begin, bool end); |
| void printSelection(QPainter *p, RenderStyle* style, int tx, int ty, int startPos, int endPos); |
| |
| bool checkPoint(int _x, int _y, int _tx, int _ty, int height); |
| |
| // Return before, after (offset set to max), or inside the text, at @p offset |
| FindSelectionResult checkSelectionPoint(int _x, int _y, int _tx, int _ty, QFontMetrics * fm, int & offset, int lineheight); |
| |
| /** |
| * if this textslave was rendered @ref _ty pixels below the upper edge |
| * of a view, would the @ref _y -coordinate be inside the vertical range |
| * of this object's representation? |
| */ |
| bool checkVerticalPoint(int _y, int _ty, int _h, int height) |
| { if((_ty + m_y > _y + _h) || (_ty + m_y + m_baseline + height < _y)) return false; return true; } |
| |
| QChar* m_text; |
| int m_y; |
| unsigned short m_len; |
| short m_x; |
| unsigned short m_baseline; |
| unsigned short m_width; |
| |
| // If m_reversed is true, this is right to left text. |
| // In this case, m_text will point to a QChar array which holds the already |
| // reversed string, and the slave has to delete this string by itself. |
| // If false, m_text points into the render text's own QChar array, |
| // and in this case it's allowed to do substractions between m_texts of |
| // different slaves. |
| bool m_reversed : 1; |
| bool m_firstLine : 1; |
| private: |
| // this is just for QVector::bsearch. Don't use it otherwise |
| TextSlave(int _x, int _y) |
| { |
| m_x = _x; |
| m_y = _y; |
| m_reversed = false; |
| }; |
| friend class RenderText; |
| }; |
| |
| class TextSlaveArray : public QVector<TextSlave> // ### change this to QArray for Qt 3.0 |
| { |
| public: |
| TextSlaveArray(); |
| |
| TextSlave* first(); |
| |
| int findFirstMatching( Item ) const; |
| virtual int compareItems( Item, Item ); |
| }; |
| |
| class RenderText : public RenderObject |
| { |
| public: |
| RenderText(DOM::DOMStringImpl *_str); |
| virtual ~RenderText(); |
| |
| virtual const char *renderName() const { return "RenderText"; } |
| |
| virtual void setStyle(RenderStyle *style); |
| |
| virtual bool isRendered() const { return true; } |
| |
| virtual void print( QPainter *, int x, int y, int w, int h, |
| int tx, int ty); |
| virtual void printObject( QPainter *, int x, int y, int w, int h, |
| int tx, int ty); |
| |
| void deleteSlaves(); |
| |
| DOM::DOMString data() const { return str; } |
| DOM::DOMStringImpl *string() const { return str; } |
| |
| virtual void layout() {assert(false);} |
| |
| bool checkPoint(int _x, int _y, int _tx, int _ty); |
| |
| // Return before, after (offset set to max), or inside the text, at @p offset |
| virtual FindSelectionResult checkSelectionPoint( int _x, int _y, int _tx, int _ty, int & offset ); |
| |
| unsigned int length() const { return str->l; } |
| QChar *text() const { return str->s; } |
| virtual void position(int x, int y, int from, int len, int width, bool reverse, bool firstLine); |
| |
| virtual unsigned int width(unsigned int from, unsigned int len, QFontMetrics *fm) const; |
| virtual unsigned int width(unsigned int from, unsigned int len, bool firstLine = false) const; |
| virtual short width() const; |
| virtual int height() const; |
| |
| // height of the contents (without paddings, margins and borders) |
| virtual int lineHeight( bool firstLine ) const; |
| virtual short baselinePosition( bool firstLine ) const; |
| |
| // overrides |
| virtual void calcMinMaxWidth(); |
| virtual short minWidth() const { return m_minWidth; } |
| virtual short maxWidth() const { return m_maxWidth; } |
| |
| // returns the minimum x position of all slaves relative to the parent. |
| // defaults to 0. |
| int minXPos() const; |
| |
| virtual int xPos() const; |
| virtual int yPos() const; |
| |
| bool hasReturn() const { return m_hasReturn; } |
| |
| virtual const QFont &font(); |
| virtual short verticalPositionHint( bool firstLine ) const; |
| |
| bool isFixedWidthFont() const; |
| |
| void setText(DOM::DOMStringImpl *text); |
| |
| virtual SelectionState selectionState() const {return m_selectionState;} |
| virtual void setSelectionState(SelectionState s) {m_selectionState = s; } |
| virtual void cursorPos(int offset, int &_x, int &_y, int &height); |
| virtual bool absolutePosition(int &/*xPos*/, int &/*yPos*/, bool f = false); |
| void posOfChar(int ch, int &x, int &y); |
| |
| virtual short marginLeft() const { return style()->marginLeft().minWidth(0); } |
| virtual short marginRight() const { return style()->marginRight().minWidth(0); } |
| |
| virtual void repaint(); |
| |
| bool hasBreakableChar() const { return m_hasBreakableChar; } |
| QFontMetrics metrics(bool firstLine) const; |
| |
| protected: |
| TextSlave * findTextSlave( int offset, int &pos ); |
| TextSlaveArray m_lines; |
| QFontMetrics *fm; |
| DOM::DOMStringImpl *str; // |
| |
| int m_lineHeight; |
| short m_minWidth; |
| short m_maxWidth; |
| |
| SelectionState m_selectionState : 3 ; |
| bool m_hasReturn : 1; |
| bool m_hasBreakableChar : 1; |
| }; |
| |
| |
| }; |
| #endif |