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, 69 insertions, 0 deletions

diff --git a/kalzium/src/plotwidget.cpp b/kalzium/src/plotwidget.cpp
new file mode 100644
index 00000000..3a6f8530
--- /dev/null
+++ b/kalzium/src/plotwidget.cpp
@@ -0,0 +1,69 @@
+/***************************************************************************
+    copyright            : (C) 2004, 2005 by Carsten Niehaus
+    email                : cniehaus@kde.org
+ ***************************************************************************/
+
+/***************************************************************************
+ *                                                                         *
+ *   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 "plotwidget.h"
+#include "plotwidget.moc"
+
+//KDE-Includes
+#include <kdebug.h>
+
+//QT-Includes
+#include <qpainter.h>
+
+PlotWidget::PlotWidget( double x1,
+		double x2,
+		double y1,
+		double y2,
+		QWidget *parent,
+		const char* name)
+		: KPlotWidget( x1, x2, y1, y2, parent, name )
+{
+	m_connectPoints = false;
+}
+
+void PlotWidget::drawObjects( QPainter *p )
+{
+	// let the KPlotWidget draw the default stuff first
+	KPlotWidget::drawObjects(p);
+	// then draw the connecting lines 
+	if (!m_connectPoints) return; // bail out if connect points is not enabled
+
+	QPoint old; // used to remember last coordinates
+	bool first = true;
+	for ( KPlotObject *po = ObjectList.first(); po; po = ObjectList.next() ) 
+	{
+		// skip empty plot objects
+		if ( po->points()->count() == 0 ) continue;
+		// skip non-point plot objects
+		if (po->type() != KPlotObject::POINTS) continue;
+
+		// draw the connecting lines
+		p->setPen( QColor( po->color() ) );
+		p->setBrush( QColor( po->color() ) );
+		for ( DPoint *dp = po->points()->first(); dp; dp = po->points()->next() ) 
+		{
+			QPoint q = dp->qpoint( PixRect, DataRect );
+
+			if ( first ) 
+				first = false;
+			else
+				p->drawLine(old.x(), old.y(), q.x(), q.y());
+
+			old.setX( q.x() );
+			old.setY( q.y() );
+		}
+		p->setBrush( Qt::NoBrush );
+	}
+}
+