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