letzter commit vor homobfield/erstellung einbindung

git-svn-id: http://svn.lsim.tuxzone.org/trunk@4 4bec179b-ab65-46ed-a5f8-55b8b5c735d0

src/homobfielditem.cpp

@@ -0,0 +1,107 @@
+/***************************************************************************
+ *   Copyright (C) 2008 by Peter Dahlberg   *
+ *   pdahlberg@gmail.com   *
+ *                                                                         *
+ *   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.                                   *
+ *                                                                         *
+ *   This program is distributed in the hope that it will be useful,       *
+ *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
+ *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
+ *   GNU General Public License for more details.                          *
+ *                                                                         *
+ *   You should have received a copy of the GNU General Public License     *
+ *   along with this program; if not, write to the                         *
+ *   Free Software Foundation, Inc.,                                       *
+ *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
+ ***************************************************************************/
+#include "homobfielditem.h"
+#include <cmath>
+#include <QPainter>
+
+HomoBFieldItem::HomoBFieldItem(QRectF sizeRect): FieldItem() {
+	setFieldLineDistance(10);
+	setFlag(ItemIsMovable);
+	setFlag(ItemIsSelectable);
+	setFlag(ItemIsFocusable);
+	setOuterPenWidth (2);
+}
+
+
+HomoBFieldItem::~HomoBFieldItem()
+{
+}
+
+
+QRectF HomoBFieldItem::boundingRect() const {
+	return QRectF(sizeRect.x() - outerPenWidth, sizeRect.y() - outerPenWidth,
+		sizeRect.width() + outerPenWidth, sizeRect.height() + outerPenWidth);
+}
+
+QRectF HomoBFieldItem::getRectF() const
+{
+    return FieldItem::getRectF();
+}
+
+void HomoBFieldItem::paint(QPainter* painter, const QStyleOptionGraphicsItem* option, QWidget* widget) {
+	Qt::GlobalColor linecolor = Qt::blue;
+	painter->setPen(linecolor);
+	if (isSelected()) painter->setBrush(Qt::Dense6Pattern); //selection deutlich machen
+	painter->drawRect(sizeRect);
+
+	for (int i = 1; i <= floor(sizeRect.width()/(qreal)fieldLineDistance); ++i) {
+		const int top_bottom_space = 10;
+		const int arrow_height = 8; //pfeilhoehe
+		const int arrow_width_half = 3; //Halbe pfeilbreite
+		
+		if ((i*fieldLineDistance)+arrow_width_half >= sizeRect.width() -2) break; //rechts ueberstehen verhindern
+		if (sizeRect.height() < top_bottom_space + arrow_height) break;//nur zeichnen, wenn sizeRect hoch genug
+
+		//Feldlinien zeichnen
+		painter->drawLine(
+			sizeRect.x() + (i*fieldLineDistance) ,
+			sizeRect.y() +top_bottom_space ,
+			sizeRect.x() + (i*fieldLineDistance) ,
+			sizeRect.y() + sizeRect.height() - top_bottom_space
+		);
+
+
+		//Pfeile Zeichnen
+		QPointF arrows[3] = {
+			QPointF(sizeRect.x()+(i*fieldLineDistance), sizeRect.y()+sizeRect.height()-top_bottom_space),
+			QPointF(sizeRect.x()+(i*fieldLineDistance)-arrow_width_half,sizeRect.y()+sizeRect.height()-top_bottom_space-arrow_height),
+			QPointF(sizeRect.x()+(i*fieldLineDistance)+arrow_width_half,sizeRect.y()+sizeRect.height()-top_bottom_space-arrow_height),
+		};
+		painter->setBrush(linecolor);
+		painter->drawPolygon(arrows,3);
+		painter->setBrush(Qt::NoBrush);
+
+		//qDebug() << pos();
+	}
+}
+
+int HomoBFieldItem::type() const {
+	return Type;
+}
+
+int HomoBFieldItem::getFieldLineDistance() const {
+	return fieldLineDistance;
+}
+
+
+void HomoBFieldItem::setFieldLineDistance ( int theValue ) {
+	if(fieldLineDistance == theValue) return;
+	fieldLineDistance = theValue;
+}
+
+
+double HomoBFieldItem::getOuterPenWidth() const {
+	return outerPenWidth;
+}
+
+
+void HomoBFieldItem::setOuterPenWidth ( double theValue ) {
+	outerPenWidth = theValue;
+}