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/***************************************************************************
resultwidget.h - paint the result
-------------------
begin : 2004/05/30
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 "resultwidget.h"
#include "resultwidget.moc"
/* these includes are needed for Qt support */
#include <qpainter.h>
#include "settingsclass.h"
ResultWidget::ResultWidget(QWidget * parent = 0, const char * name = 0,
const ratio para_result = *new ratio()) :
FractionBaseWidget(parent, name), m_result(para_result)
{
#ifdef DEBUG
kdDebug() << "constructor ResultWidget" << endl;
#endif
}
ResultWidget::~ResultWidget()
{
#ifdef DEBUG
kdDebug() << "destructor ResultWidget" << endl;
#endif
}
void ResultWidget::setResult(const ratio para_result)
{
m_result = para_result;
update();
}
void ResultWidget::paintEvent(QPaintEvent* /* 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 old_x = _MARGIN_X;
// start the painter
QPainter paint(this);
// ratios and operation signs are painted with the same font
paint.setFont(m_font);
// set the pen for painting
QPen pen(Qt::SolidLine);
pen.setWidth(0);
paint.setPen(pen);
// get the font height; the font height doesn't change while painting
QFontMetrics 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
paintMiddle(paint, QString("="), old_x, fm, m_colorOperation);
paintRatio(paint, m_result, old_x, fm, false);
if (SettingsClass::showSpecialRatioNotation() == true && QABS(m_result.numerator()) >= QABS(m_result.denominator()))
{
// result as mixed number
paintMiddle(paint, QString("="), old_x, fm, m_colorOperation);
paintRatio(paint, m_result, old_x, fm, true);
}
// stop the painter
paint.end();
// the space we needed for painting is the minimum width of the widget
setMinimumWidth(old_x);
return;
}
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