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, 130 insertions, 0 deletions

diff --git a/kbruch/src/taskwidget.cpp b/kbruch/src/taskwidget.cpp
new file mode 100644
index 00000000..378b7afb
--- /dev/null
+++ b/kbruch/src/taskwidget.cpp
@@ -0,0 +1,130 @@
+/***************************************************************************
+                          taskwidget.cpp  -  paint a task
+                             -------------------
+    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 "taskwidget.h"
+#include "taskwidget.moc"
+
+/* these includes are needed for KDE support */
+#include <klocale.h>
+
+/* these includes are needed for Qt support */
+#include <qpainter.h>
+
+TaskWidget::TaskWidget(QWidget * parent = 0, const char * name = 0,
+													const task para_task = *new task()) :
+			FractionBaseWidget(parent, name), m_task(para_task)
+{
+#ifdef DEBUG
+	kdDebug() << "constructor TaskWidget" << endl;
+#endif
+}
+
+TaskWidget::~TaskWidget()
+{
+#ifdef DEBUG
+	kdDebug() << "destructor TaskWidget" << endl;
+#endif
+}
+
+void TaskWidget::setTask(const task para_task)
+{
+	m_task = para_task;
+	update();
+}
+
+void TaskWidget::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;
+
+	// strings holding numerator, denominator and the operation sign
+	QString str_numerator, str_denominator, str_operation;
+
+	// operation sign as number
+	short tmp_operation;
+
+	// 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);
+
+	// loop through all ratios and paint them
+	for (unsigned short tmp_counter = 0; tmp_counter < m_task.getNumberOfRatios(); tmp_counter++)
+	{
+		// get the current ratio and paint it
+		paintRatio(paint, m_task.get_ratio_n(tmp_counter), old_x, fm, false);
+
+		// now check if we have another operation to show
+		// if not we will stop showing ratios as well
+		if (tmp_counter < m_task.getNumberOfOperations())
+		{
+			// get the operation sign
+			tmp_operation = m_task.get_op_n(tmp_counter);
+
+			// we have to convert the operation sign into a string
+			switch (tmp_operation)
+			{
+				case ADD :
+					str_operation = "+";
+					break;
+				case SUB :
+					str_operation = "-";
+					break;
+				case MUL :
+					str_operation = "x";
+					break;
+				case DIV :
+					// there seems to be different division signs around the world
+					// so please translate it to the right one for your country
+					str_operation = i18n("division symbol", "/");
+					break;
+			} /* switch (operation) */
+
+			// paint the operation
+			paintMiddle(paint, str_operation, old_x, fm, m_colorOperation);
+
+		} else {
+			// no further operations to show, so we always show the = sign at the
+			// end of a task
+			paintMiddle(paint, "=", old_x, fm, m_colorOperation);
+
+			break;
+		} // if (tmp_counter < m_task.getNumberOfOperations())
+	}
+
+	// stop the painter
+	paint.end();
+
+	// the space we needed for painting is the minimum width of the widget
+	setMinimumWidth(old_x);
+
+	return;
+}