Copy the KDE 3.5 branch to branches/trinity for new KDE 3.5 features.

BUG:215923


git-svn-id: svn://anonsvn.kde.org/home/kde/branches/trinity/kdeedu@1054174 283d02a7-25f6-0310-bc7c-ecb5cbfe19da

1 files changed, 168 insertions, 0 deletions

diff --git a/kbruch/src/fractionbasewidget.cpp b/kbruch/src/fractionbasewidget.cpp
new file mode 100644
index 00000000..77ff3056
--- /dev/null
+++ b/kbruch/src/fractionbasewidget.cpp
@@ -0,0 +1,168 @@
+/***************************************************************************
+                          fractionbasewidget.cpp  -  base fraction painting
+                             -------------------
+    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 "fractionbasewidget.h"
+#include "fractionbasewidget.moc"
+
+/* these includes are needed for KDE support */
+#include <kglobalsettings.h>
+
+/* these includes are needed for Qt support */
+#include <qpainter.h>
+
+#include "settingsclass.h"
+
+FractionBaseWidget::FractionBaseWidget(QWidget * parent = 0, const char * name = 0) :
+			QWidget(parent, name)
+{
+#ifdef DEBUG
+	kdDebug() << "constructor FractionBaseWidget" << endl;
+#endif
+
+	// set colors and font used for task displaying
+	setColorAndFont();
+}
+
+FractionBaseWidget::~FractionBaseWidget()
+{
+#ifdef DEBUG
+	kdDebug() << "destructor FractionBaseWidget" << endl;
+#endif
+}
+
+void FractionBaseWidget::updateAndRepaint()
+{
+	setColorAndFont();
+	update();
+}
+
+void FractionBaseWidget::paintRatio(QPainter & paint, ratio tmp_ratio, int & x_pos, QFontMetrics & fm, bool show_mixed, bool addMargin)
+{
+	QPen pen = paint.pen(); // get the pen
+	int fontHeight = fm.lineSpacing(); // get the font height
+
+	int int_numerator, int_denominator, int_mixed;
+	QString str_numerator, str_denominator;
+	QString str_mixed;
+
+	int fontWidth; // to store the width of the last thing painted
+	int tmp_int;
+
+	// check if we have to show the ratio as mixed number
+	//         11            1
+	// if yes, -- becomes  2 -
+	//         5             5
+	int_numerator = tmp_ratio.numerator();
+	int_denominator = tmp_ratio.denominator();
+	if (show_mixed == true && QABS(int_numerator) >= QABS(int_denominator))
+	{
+		// calculate the mixed number
+		int_mixed = int(int_numerator / int_denominator);
+
+		// the negative sign is in front of the mixed number
+		int_numerator = QABS(int_numerator);
+		int_denominator = QABS(int_denominator);
+
+		// we have to reduce the numerator by the mixed number * denominator
+		int_numerator = int_numerator % int_denominator;
+
+		// now we can convert the numbers into strings for painting
+		str_mixed.setNum(int_mixed);
+		str_numerator.setNum(int_numerator);
+		str_denominator.setNum(int_denominator);
+
+		// paint the front part of the mixed number
+		paintMiddle(paint, str_mixed, x_pos, fm, m_colorNumber);
+	} else {
+
+		// don't show the ratio as mixed number
+		str_numerator.setNum(int_numerator);
+		str_denominator.setNum(int_denominator);
+	} // if (show_mixed == true && QABS(int_numerator) > QABS(int_denominator))
+
+	// get the text width of the current ratio
+	fontWidth = fm.width(str_numerator);
+	tmp_int = fm.width(str_denominator);
+	if (tmp_int > fontWidth)
+		fontWidth = tmp_int;
+		
+	// show numerator and denominator in m_colorNumber
+	pen.setColor(m_colorNumber);
+	paint.setPen(pen);
+
+	// make sure we don't display something like:   0
+	//                                            7 -
+	//                                              3
+	if (! (int_numerator == 0 && show_mixed == true) )
+	{
+		// paint the numerator
+		paint.drawText(x_pos, 0, fontWidth, fontHeight, AlignCenter, str_numerator);
+	
+		// paint the fraction line between numerator and denominator
+		paint.fillRect(x_pos, fontHeight + 4, fontWidth, 2, m_colorLine);
+	
+		// paint the denominator
+		paint.drawText(x_pos, fontHeight + 10, fontWidth, fontHeight, AlignCenter, str_denominator);
+	
+		// move the x position to the right by adding the width used for painting
+		// the ratio and a margin
+		x_pos += fontWidth;
+
+		if (addMargin == true)
+			x_pos += _MARGIN_X;
+	}
+
+	return;
+}
+
+void FractionBaseWidget::paintMiddle(QPainter & paint, const QString& paint_str, int & x_pos, QFontMetrics & fm, QColor color, bool addMargin)
+{
+	// get the pen, font height and font width
+	QPen pen = paint.pen();
+	int fontHeight = fm.lineSpacing();
+	int fontWidth = fm.width(paint_str);
+
+	// paint the string
+	pen.setColor(color);
+	paint.setPen(pen);
+	paint.drawText(x_pos, fontHeight + 5 - fontHeight / 2, fontWidth, fontHeight, AlignCenter, paint_str);
+
+	// move the x position to the right by adding the width used for
+	// painting the string and a margin
+	x_pos += fontWidth;
+
+	if (addMargin == true)
+		x_pos += _MARGIN_X;
+
+	return;
+}
+
+void FractionBaseWidget::setColorAndFont()
+{
+	/* set colors */
+	m_colorNumber = SettingsClass::numberColor();
+	m_colorLine = SettingsClass::fractionBarColor();
+	m_colorOperation = SettingsClass::operationColor();
+
+	/* set font */
+	m_font = SettingsClass::taskFont();
+
+	// repaint
+	update();
+
+	return;
+}