/* This file is part of the KDE project Copyright (C) 2001 David Faure <faure@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., 51 Franklin Street, Fifth Floor, * Boston, MA 02110-1301, USA. */ #ifndef kotextformatter_h #define kotextformatter_h #include "KoRichText.h" class KoTextZoomHandler; class KoHyphenator; /** * We implement our own text formatter to implement WYSIWYG: * It is heavily based on KoTextFormatterBaseBreakWords, but stores the x position * of characters (and their width) in pixels, whereas all the rest is in L.U. * It also implements hyphenation. * @author David Faure <faure@kde.org> */ class KOTEXT_EXPORT KoTextFormatter : public KoTextFormatterBase { public: KoTextFormatter(); virtual ~KoTextFormatter(); virtual bool format( KoTextDocument *doc, KoTextParag *parag, int start, const TQMap<int, KoTextParagLineStart*> &oldLineStarts, int& y, int& widthUsed ); // Called after formatting a paragraph virtual void postFormat( KoTextParag* parag ); KoHyphenator* hyphenator() { return m_hyphenator; } private: KoHyphenator* m_hyphenator; }; // Internal class for KoTextFormatter, holds all the temporary data // KoTextFormatter is basically the settings and the algorithm being used // KoTextFormatterCore is where the formatting really happens class KoTextFormatterCore { public: KoTextFormatterCore( KoTextFormatter* settings, KoTextDocument *doc, KoTextParag *parag, int start ); bool format(); // widthUsed is the width of the wider line (with the current // word-breaking, margins included, but e.g. centering not included). // Unused in KWord currently, this is however used by KPresenter's // "resize object to fit contents" feature. int widthUsed() const { return wused; } int resultY() const { return y; } protected: // Return ww (in LU) and pixelww (in pixels) // Should be called only once per char TQPair<int, int> determineCharWidth(); KoTextParagLineStart *koFormatLine( KoTextZoomHandler *zh, KoTextParag * /*parag*/, KoTextString *string, KoTextParagLineStart *line, KoTextStringChar *startChar, KoTextStringChar *lastChar, int align, int space ); KoTextParagLineStart *koBidiReorderLine( KoTextZoomHandler *zh, KoTextParag * /*parag*/, KoTextString *text, KoTextParagLineStart *line, KoTextStringChar *startChar, KoTextStringChar *lastChar, int align, int space ); void moveChar( KoTextStringChar& chr, KoTextZoomHandler *zh, int deltaX, int deltaPixelX ); // Total left margin for a given line // Takes into account parag's leftmargin, firstlinemargin and counter, // but not adjustMargins (application hook) int leftMargin( bool firstLine, bool includeFirstLineMargin = true ) const; int rightMargin( bool firstLine ) const; private: KoTextFormatter* settings; KoTextDocument* doc; KoTextParag* parag; int start; // always 0 currently int wused; // see widthUsed int y; int availableWidth; int maxY; // When moving a big item down, we might want to rollback // to the 'best position for it' if we can't make it fit anywhere else. TQPair<int,int> maxAvailableWidth; // first=y second=available width // Information on current char KoTextStringChar *c; int i; // index number (in the paragraph) int x; // X position (in LU) }; #endif