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/* This file is part of the KDE project
Copyright (C) 2003 Ulrich Kuettler <ulrich.kuettler@gmx.de>
Copyright (C) 2006 Alfredo Beaumont Sainz <alfredo.beaumont@gmail.com>
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 FONTSTYLE_H
#define FONTSTYLE_H
#include <tqstring.h>
#include <tqfont.h>
#include "contextstyle.h"
#include "kformuladefs.h"
#include "symboltable.h"
KFORMULA_NAMESPACE_BEGIN
class Artwork;
class SymbolTable;
/**
* Base class for all supported font styles.
*/
class FontStyle {
public:
~FontStyle() {}
/**
* lazy init support. Needs to be run before anything else.
* @param install if true fonts may be installed if needed
*/
bool init( ContextStyle* context, bool install = true );
/// the table for ordinary symbols (those that have a unicode value)
const SymbolTable* symbolTable() const { return &m_symbolTable; }
SymbolTable* symbolTable() { return &m_symbolTable; }
Artwork* createArtwork(SymbolType type = EmptyBracket) const;
static TQStringList missingFonts( bool install = true );
static bool m_installed;
static void testFont( TQStringList& missing, const TQString& fontName );
private:
static TQStringList missingFontsInternal();
static void installFonts();
SymbolTable m_symbolTable;
};
const TQChar spaceChar = 0x0020;
const TQChar leftParenthesisChar = 0x0028;
const TQChar rightParenthesisChar = 0x0029;
const TQChar leftSquareBracketChar = 0x005B;
const TQChar rightSquareBracketChar = 0x005D;
const TQChar leftCurlyBracketChar = 0x007B;
const TQChar verticalLineChar = 0x007C;
const TQChar rightCurlyBracketChar = 0x007D;
const TQChar leftAngleBracketChar = 0x2329;
const TQChar rightAngleBracketChar = 0x232A;
const TQChar slashChar = 0x002F;
const TQChar backSlashChar = 0x005C;
const TQChar integralChar = 0x222B;
const TQChar summationChar = 0x2211;
const TQChar productChar = 0x220F;
const TQChar applyFunctionChar = 0x2061;
const TQChar invisibleTimes = 0x2062;
const TQChar invisibleComma = 0x2063;
extern const TQChar leftRoundBracket[];
extern const TQChar leftSquareBracket[];
extern const TQChar leftCurlyBracket[];
extern const TQChar leftLineBracket[];
extern const TQChar rightLineBracket[];
extern const TQChar rightRoundBracket[];
extern const TQChar rightSquareBracket[];
extern const TQChar rightCurlyBracket[];
/*
* A piece of art that may be used by any element.
*/
class Artwork {
public:
Artwork(SymbolType type = EmptyBracket);
virtual ~Artwork() {}
virtual void calcSizes( const ContextStyle& style,
ContextStyle::TextStyle tstyle,
double factor,
luPt parentSize );
virtual void calcSizes( const ContextStyle& style,
ContextStyle::TextStyle tstyle,
double factor );
virtual void draw( TQPainter& painter, const LuPixelRect& r,
const ContextStyle& context,
ContextStyle::TextStyle tstyle,
StyleAttributes& style,
luPt parentSize, const LuPixelPoint& origin );
virtual void draw( TQPainter& painter, const LuPixelRect& r,
const ContextStyle& context,
ContextStyle::TextStyle tstyle,
StyleAttributes& style,
const LuPixelPoint& parentOrigin );
luPixel getWidth() const { return size.width(); }
luPixel getHeight() const { return size.height(); }
void setWidth( luPixel width ) { size.setWidth(width); }
void setHeight( luPixel height ) { size.setHeight(height); }
luPixel getBaseline() const { return baseline; }
void setBaseline( luPixel line ) { baseline = line; }
luPixel getX() const { return point.x(); }
luPixel getY() const { return point.y(); }
void setX( luPixel x ) { point.setX( x ); }
void setY( luPixel y ) { point.setY( y ); }
SymbolType getType() const { return type; }
void setType(SymbolType t) { type = t; }
virtual bool isNormalChar() const { return getBaseline() != -1 && ( cmChar == -1 ); }
virtual double slant() const { return 0; }
protected:
void calcCharSize( const ContextStyle& style, luPt height, TQChar ch );
void drawCharacter( TQPainter& painter, const ContextStyle& style,
luPixel x, luPixel y, luPt height, TQChar ch );
void calcCharSize( const ContextStyle& style, TQFont f, luPt height, TQChar c );
void drawCharacter( TQPainter& painter, const ContextStyle& style,
TQFont f,
luPixel x, luPixel y, luPt height, uchar c );
void calcRoundBracket( const ContextStyle& style, const TQChar chars[], luPt height, luPt charHeight );
void calcCurlyBracket( const ContextStyle& style, const TQChar chars[], luPt height, luPt charHeight );
void drawBigRoundBracket( TQPainter& p, const ContextStyle& style, const TQChar chars[], luPixel x, luPixel y, luPt charHeight );
void drawBigCurlyBracket( TQPainter& p, const ContextStyle& style, const TQChar chars[], luPixel x, luPixel y, luPt charHeight );
private:
LuPixelSize size;
LuPixelPoint point;
/**
* Used if we are a character.
*/
luPixel baseline;
SymbolType type;
bool calcCMDelimiterSize( const ContextStyle& context, uchar c,
luPt fontSize, luPt parentSize );
void calcLargest( const ContextStyle& context, uchar c, luPt fontSize );
void drawCMDelimiter( TQPainter& painter, const ContextStyle& style,
luPixel x, luPixel y, luPt height );
short cmChar;
};
KFORMULA_NAMESPACE_END
#endif
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