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/***************************************************************************
factorizedwidget.h - paint a factorization
-------------------
begin : 2004/07/11
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 "factorizedwidget.h"
#include "factorizedwidget.moc"
/* these includes are needed for Qt support */
#include <tqpainter.h>
FactorizedWidget::FactorizedWidget(TQWidget * parent, const char * name, const uintList para_factors) :
FractionBaseWidget(parent, name), m_factors(para_factors)
{
#ifdef DEBUG
kdDebug() << "constructor FactorizedWidget" << endl;
#endif
}
FactorizedWidget::~FactorizedWidget()
{
#ifdef DEBUG
kdDebug() << "destructor FactorizedWidget" << endl;
#endif
}
void FactorizedWidget::setFactors(const uintList para_factors)
{
m_factors = para_factors;
update();
}
void FactorizedWidget::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;
int fontWidth; // to store the width of the last thing painted
// 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(Qt::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(fm.lineSpacing());
setMaximumHeight(fm.lineSpacing());
TQString tmpStr;
int fontHeight = fm.lineSpacing(); // get the font height
for (uint tmpInt = 0; tmpInt < m_factors.count(); tmpInt++)
{
// set color for operation sign
pen.setColor(m_colorOperation);
paint.setPen(pen);
if (tmpInt == 0)
{
fontWidth = fm.width("=");
paint.drawText(x_pos, 0, fontWidth, fontHeight, AlignCenter, "=");
x_pos += fontWidth;
x_pos += _MARGIN_X;
} else {
fontWidth = fm.width("*");
paint.drawText(x_pos, 0, fontWidth, fontHeight, AlignCenter, "*");
x_pos += fontWidth;
x_pos += _MARGIN_X;
}
// set color for number
pen.setColor(m_colorNumber);
paint.setPen(pen);
tmpStr.setNum(m_factors[tmpInt]);
fontWidth = fm.width(tmpStr);
paint.drawText(x_pos, 0, fontWidth, fontHeight, AlignCenter, tmpStr);
x_pos += fontWidth;
x_pos += _MARGIN_X;
}
// 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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