Differential D1875 Diff 5683 libs/widgets/kis_double_parse_spin_box.h

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libs/widgets/kis_double_parse_spin_box.h

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		1		/*
		2		* Copyright (c) 2016 Laurent Valentin Jospin <laurent.valentin@famillejospin.ch>
		3		*
		4		* This program is free software; you can redistribute it and/or modify
		5		* it under the terms of the GNU General Public License as published by
		6		* the Free Software Foundation; either version 2 of the License, or
		7		* (at your option) any later version.
		8		*
		9		* This program is distributed in the hope that it will be useful,
		10		* but WITHOUT ANY WARRANTY; without even the implied warranty of
		11		* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
		12		* GNU General Public License for more details.
		13		*
		14		* You should have received a copy of the GNU General Public License
		15		* along with this program; if not, write to the Free Software
		16		* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
		17		*/
		18
		19		#ifndef KISDOUBLEPARSESPINBOX_H
		20		#define KISDOUBLEPARSESPINBOX_H
		21
		22		#include <QDoubleSpinBox>
		23
		24		#include "kritawidgets_export.h"
		25
		26		class QLabel;
		27
		28		/*!
		29		* \brief The KisDoubleParseSpinBox class is a cleverer doubleSpinBox, able to parse arithmetic expressions.
		30		*
		31		* Use this spinbox instead of the basic one from Qt if you want it to be able to parse arithmetic expressions.
		32		*/
		33		class KRITAWIDGETS_EXPORT KisDoubleParseSpinBox : public QDoubleSpinBox
		34		{
		35
		36		Q_OBJECT
		37		public:
		38		KisDoubleParseSpinBox(QWidget* parent = 0);
		39		~KisDoubleParseSpinBox();
		40
		41		virtual double valueFromText(const QString & text) const;
		42		virtual QString textFromValue(double val) const;
		43		virtual QValidator::State validate ( QString & input, int & pos ) const;
		44
		45		virtual void stepBy(int steps);
		46
		47		void setValue(double value); //polymorphism won't work directly, we use a signal/slot hack to do so but if signals are disabled this function will still be useful.
		48
		49		bool isLastValid() const{ return boolLastValid; }
		50
		51		Q_SIGNALS:
		52
		53		//! \brief signal emmitted when the last parsed expression create an error.
		54		void errorWhileParsing(QString expr) const;
		55		//! \brief signal emmitted when the last parsed expression is valid.
		56		void noMoreParsingError() const;
		57
		58		public Q_SLOTS:
		59
		60		//! \brief useful to let the widget change it's stylesheet when an error occured in the last expression.
		61		void setErrorStyle();
		62		//! \brief useful to let the widget reset it's stylesheet when there's no more error.
		63		void clearErrorStyle();
		64		//! \brief say the widget to return to an error free state.
		65		void clearError();
		66
		67		protected:
		68
		69		mutable QString* lastExprParsed;
		70		mutable bool boolLastValid;
		71		mutable double oldValue;
		72
		73		QLabel* warningIcon;
		74
		75		QPalette oldPalette;
		76		bool isOldPaletteSaved;
		77
		78		QMargins oldMargins;
		79		bool areOldMarginsSaved;
		80		};
		81
		82		#endif // KISDOUBLEPARSESPINBOX_H