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115 lines
4.0 KiB
115 lines
4.0 KiB
/* This file is part of the KDE project
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Copyright (C) 2001 David Faure <faure@kde.org>
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public
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License as published by the Free Software Foundation; either
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version 2 of the License, or (at your option) any later version.
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This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public License
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along with this library; see the file COPYING.LIB. If not, write to
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the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*/
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#ifndef kotextformatter_h
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#define kotextformatter_h
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#include "KoRichText.h"
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class KoTextZoomHandler;
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class KoHyphenator;
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/**
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* We implement our own text formatter to implement WYSIWYG:
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* It is heavily based on KoTextFormatterBaseBreakWords, but stores the x position
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* of characters (and their width) in pixels, whereas all the rest is in L.U.
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* It also implements hyphenation.
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* @author David Faure <faure@kde.org>
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*/
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class KOTEXT_EXPORT KoTextFormatter : public KoTextFormatterBase
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{
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public:
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KoTextFormatter();
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virtual ~KoTextFormatter();
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virtual bool format( KoTextDocument *doc, KoTextParag *parag, int start, const TQMap<int, KoTextParagLineStart*> &oldLineStarts, int& y, int& widthUsed );
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// Called after formatting a paragraph
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virtual void postFormat( KoTextParag* parag );
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KoHyphenator* hyphenator() {
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return m_hyphenator;
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}
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private:
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KoHyphenator* m_hyphenator;
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};
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// Internal class for KoTextFormatter, holds all the temporary data
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// KoTextFormatter is basically the settings and the algorithm being used
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// KoTextFormatterCore is where the formatting really happens
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class KoTextFormatterCore
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{
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public:
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KoTextFormatterCore( KoTextFormatter* settings, KoTextDocument *doc, KoTextParag *parag, int start );
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bool format();
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// widthUsed is the width of the wider line (with the current
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// word-breaking, margins included, but e.g. centering not included).
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// Unused in KWord currently, this is however used by KPresenter's
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// "resize object to fit contents" feature.
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int widthUsed() const { return wused; }
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int resultY() const { return y; }
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protected:
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// Return ww (in LU) and pixelww (in pixels)
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// Should be called only once per char
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TQPair<int, int> determineCharWidth();
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KoTextParagLineStart *koFormatLine(
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KoTextZoomHandler *zh,
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KoTextParag * /*parag*/, KoTextString *string, KoTextParagLineStart *line,
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KoTextStringChar *startChar, KoTextStringChar *lastChar, int align, int space );
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KoTextParagLineStart *koBidiReorderLine(
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KoTextZoomHandler *zh,
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KoTextParag * /*parag*/, KoTextString *text, KoTextParagLineStart *line,
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KoTextStringChar *startChar, KoTextStringChar *lastChar, int align, int space );
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void moveChar( KoTextStringChar& chr, KoTextZoomHandler *zh,
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int deltaX, int deltaPixelX );
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// Total left margin for a given line
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// Takes into account parag's leftmargin, firstlinemargin and counter,
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// but not adjustMargins (application hook)
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int leftMargin( bool firstLine, bool includeFirstLineMargin = true ) const;
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int rightMargin( bool firstLine ) const;
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private:
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KoTextFormatter* settings;
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KoTextDocument* doc;
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KoTextParag* parag;
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int start; // always 0 currently
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int wused; // see widthUsed
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int y;
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int availableWidth;
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int maxY;
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// When moving a big item down, we might want to rollback
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// to the 'best position for it' if we can't make it fit anywhere else.
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TQPair<int,int> maxAvailableWidth; // first=y second=available width
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// Information on current char
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KoTextStringChar *c;
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int i; // index number (in the paragraph)
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int x; // X position (in LU)
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};
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#endif
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