initial commit of code tree

git-svn-id: http://svn.lsim.tuxzone.org/trunk@2 4bec179b-ab65-46ed-a5f8-55b8b5c735d0

src/expdoublespinbox.cpp

@@ -0,0 +1,99 @@
+/***************************************************************************
+ *   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 "expdoublespinbox.h"
+#include <QRegExp>
+#include <QLocale>
+#include <QRegExpValidator>
+#include <QLineEdit>
+#include <QtDebug>
+#include <cmath>
+
+ExpDoubleSpinBox::ExpDoubleSpinBox()
+		: QDoubleSpinBox() {
+	setPositiveExp(4);
+	setNegativeExp(3);	
+}
+
+
+ExpDoubleSpinBox::~ExpDoubleSpinBox() {
+}
+
+
+double ExpDoubleSpinBox::valueFromText ( const QString& text ) const {
+	return text.toDouble();
+}
+
+QString ExpDoubleSpinBox::textFromValue ( double val ) const {
+	//qDebug() << val;
+	if((val < pow(10,getPositiveExp()) && val > 1) || (val > -pow(10,getPositiveExp()) && val < -1) || val == 0) { 
+		//return QDoubleSpinBox::textFromValue ( val );
+		return QString("%L1").arg(val,0,'f',decimals());
+	}
+	else if ( (val >= pow(10, -getNegativeExp()) && val <= 1 ) || (val <= -pow(10, -getNegativeExp()) && val >= -1 ) ){
+		//return QDoubleSpinBox::textFromValue ( val );
+		return QString("%L1").arg(val,0,'f',decimals());
+	}
+	else { 
+		return QString("%L1").arg(val,0,'e',decimals());
+	}
+	//return QDoubleSpinBox::textFromValue ( val );
+}
+
+QValidator::State ExpDoubleSpinBox::validate ( QString & input, int & pos ) const {
+	QLocale loc;
+	QChar decpoint = loc.decimalPoint(); //Locale abhaengiger dezimaltrenner
+	QString regExpString =QString("[\\-,\\+]?\\d*\\%1?\\d+([e,E][\\-,\\+]\\d+)?").arg(decpoint);
+	QRegExp regExp(regExpString);
+   	QValidator *validator = new QRegExpValidator(regExp, 0);
+	//qDebug() << validator->validate(input,pos);
+	return validator->validate(input,pos);
+}
+
+QDoubleSpinBox::StepEnabled ExpDoubleSpinBox::stepEnabled () const {
+	QAbstractSpinBox::StepEnabled enabled = QDoubleSpinBox::stepEnabled();
+
+	if(
+		(value() > 0 && value() < pow(10, -getNegativeExp())) ||
+		(value() < 0 && value() > -pow(10, -getNegativeExp())) 
+	) { //kein step bei negativen Zehnerpotenzen
+		enabled = QAbstractSpinBox::StepNone;
+	}
+
+	return enabled;
+
+}
+void ExpDoubleSpinBox::setNegativeExp (int exponent) {
+	if (negativeExp != exponent && exponent >= 0) negativeExp = exponent;
+}
+void ExpDoubleSpinBox::setPositiveExp (int exponent) {
+	if (positiveExp != exponent && exponent >= 0) positiveExp = exponent;
+}
+const int ExpDoubleSpinBox::getNegativeExp () const{
+	return negativeExp;
+}
+const int ExpDoubleSpinBox::getPositiveExp () const{
+	return positiveExp;
+}
+
+void ExpDoubleSpinBox::stepBy ( int steps ) {
+	QDoubleSpinBox::stepBy(steps);	
+}
+
+