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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 <qpainter.h>
+
+FactorizedWidget::FactorizedWidget(QWidget * 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(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 x_pos = _MARGIN_X;
+
+ int fontWidth; // to store the width of the last thing painted
+
+ // 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(fm.lineSpacing());
+ setMaximumHeight(fm.lineSpacing());
+
+ QString 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;
+}