qwt_text.h

/* -*- mode: C++ ; c-file-style: "stroustrup" -*- *****************************
 * Qwt Widget Library
 * Copyright (C) 1997   Josef Wilgen
 * Copyright (C) 2003   Uwe Rathmann
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the Qwt License, Version 1.0
 *****************************************************************************/

// vim: expandtab

#ifndef QWT_TEXT_H
#define QWT_TEXT_H

#include <qfont.h>
#include <qfontmetrics.h>
#include <qnamespace.h>
#include <qpen.h>
#include <qbrush.h>
#include <qsimplerichtext.h>
#include <qstring.h>

#include "qwt_global.h"

class QWT_EXPORT QwtText
{
public:
    virtual ~QwtText();

    static QwtText *makeText(const QString &, Qt::TextFormat,
        int align, const QFont &, const QColor &color = QColor(),
        const QPen &pen = QPen(Qt::NoPen),
        const QBrush &brush = QBrush(Qt::NoBrush));

    static QwtText *makeText(const QString &, 
        int align, const QFont &, const QColor &color = QColor(),
        const QPen &pen = QPen(Qt::NoPen),
        const QBrush &brush = QBrush(Qt::NoBrush));

    static void setDefaultFormat(Qt::TextFormat);
    static Qt::TextFormat defaultFormat();

    virtual void setText(const QString &);
    QString text() const;

    inline bool isNull() const { return text().isNull(); }
    inline bool isEmpty() const { return text().isEmpty(); }

    virtual void setFont(const QFont &);
    QFont font() const;
    QFontMetrics fontMetrics() const;

    virtual void setAlignment(int align);
    int alignment() const;

    virtual void setColor(const QColor &);
    QColor color() const;

    virtual void setRectPen(const QPen &);
    QPen rectPen() const;

    virtual void setRectBrush(const QBrush &);
    QBrush rectBrush() const;

    virtual int heightForWidth(int width) const = 0;

    virtual QRect boundingRect(QPainter *painter = 0) const = 0;

    virtual void draw(QPainter *painter, const QRect &rect) const = 0;

    virtual QwtText *clone() const = 0;

protected:
    QwtText(const QString &text, const QFont &, int align, const QColor &,
        const QPen &pen = QPen(Qt::NoPen),
        const QBrush &brush = QBrush(Qt::NoBrush));

private:
    int d_align;
    QString d_text;
    QFont d_font;
    QColor d_color;
    QFontMetrics d_fm;
    QPen d_rectPen;
    QBrush d_rectBrush;

    static Qt::TextFormat d_defaultFormat;
};


class QWT_EXPORT QwtPlainText: public QwtText
{
public:
    QwtPlainText(const QString &text, const QFont &,
        int align = Qt::AlignCenter | Qt::WordBreak | Qt::ExpandTabs,
        const QColor &color = QColor(), const QPen &pen = QPen(Qt::NoPen),
        const QBrush &brush = QBrush(Qt::NoBrush));

    QwtPlainText(const QString &text, const QFont &font,
                 const QColor &color);

    virtual QwtText *clone() const;

    virtual int heightForWidth(int width) const;
    virtual QRect boundingRect(QPainter *painter = 0) const;

    virtual void draw(QPainter *painter, const QRect &rect) const;
};


#ifndef QT_NO_RICHTEXT

class QWT_EXPORT QwtRichText: public QwtText
{
public:
    QwtRichText(const QString &text, const QFont &font,
        int align = Qt::AlignCenter | Qt::WordBreak | Qt::ExpandTabs,
        const QColor &color = QColor(),
        const QPen &pen = QPen(Qt::NoPen),
        const QBrush &brush = QBrush(Qt::NoBrush));

    QwtRichText(const QString &, const QFont &, const QColor &);

    virtual ~QwtRichText();

    virtual QwtText *clone() const;

    virtual void setText(const QString &text);
    virtual void setFont(const QFont &font);
    virtual void setAlignment(int align);

    virtual int heightForWidth(int width) const;
    virtual QRect boundingRect(QPainter *painter = 0) const;

    virtual void draw(QPainter *painter, const QRect &rect) const;

private:
    QString taggedText(const QString &text, int alignment) const;

    QSimpleRichText *d_doc;
};

#endif

#endif

// Local Variables:
// mode: C++
// c-file-style: "stroustrup"
// End:

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