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/***************************************************************************
ratiowidget.h - paint a ratio
-------------------
begin : 2004/06/03
copyright : (C) 2004 by Sebastian Stein
email : seb.kde@hpfsc.de
***************************************************************************/
/***************************************************************************
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 2 of the License, or *
* (at your option) any later version. *
* *
***************************************************************************/
#include "ratiowidget.h"
#include "ratiowidget.moc"
/* these includes are needed for TQt support */
#include <tqpainter.h>
RatioWidget::RatioWidget(TQWidget * parent, const char * name,
const ratio para_ratio = *new ratio()) :
FractionBaseWidget(parent, name), m_ratio(para_ratio)
{
#ifdef DEBUG
kdDebug() << "constructor RatioWidget" << endl;
#endif
}
RatioWidget::~RatioWidget()
{
#ifdef DEBUG
kdDebug() << "destructor RatioWidget" << endl;
#endif
}
void RatioWidget::setRatio(const ratio para_ratio)
{
m_ratio = para_ratio;
update();
}
void RatioWidget::paintEvent(TQPaintEvent* /* p_paintEvent */)
{
// our x position, we paint from left to right;
// we don't want to start directly on the border, so add the margin
int x_pos = _MARGIN_X;
// start the painter
TQPainter paint(this);
// ratios and operation signs are painted with the same font
paint.setFont(m_font);
// set the pen for painting
TQPen pen(TQt::SolidLine);
pen.setWidth(0);
paint.setPen(pen);
// get the font height; the font height doesn't change while painting
TQFontMetrics fm(paint.fontMetrics());
// now we can correctly set the height of the widget
setMinimumHeight(2 * fm.lineSpacing() + 10);
setMaximumHeight(2 * fm.lineSpacing() + 10);
// result as normal ratio
paintRatio(paint, m_ratio, x_pos, fm, false);
// stop the painter
paint.end();
// the space we needed for painting is the minimum width of the widget
setMinimumWidth(x_pos);
return;
}
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