Differential D1875 Diff 4472 libs/ui/widgets/kis_doubleparsespinbox.h

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libs/ui/widgets/kis_doubleparsespinbox.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 <kritaui_export.h>
25
26		/*!
27		* \brief The KisDoubleParseSpinBox class is a cleverer doubleSpinBox, able to parse arithmetic expressions.
28		*
29		* Use this spinbox instead of the basic one from Qt if you want it to be able to parse arithmetic expressions.
30		*/
31		class KRITAUI_EXPORT KisDoubleParseSpinBox : public QDoubleSpinBox
32		{
33
34		Q_OBJECT
35		public:
36		KisDoubleParseSpinBox(QWidget* parent = 0);
37		~KisDoubleParseSpinBox();
38
39		virtual double valueFromText(const QString & text) const;
40		virtual QString textFromValue(double val) const;
41		virtual QValidator::State validate ( QString & input, int & pos ) const;
42
43		virtual void stepBy(int steps);
44
45		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 usefull.
46
47		Q_SIGNALS:
48
49		//! \brief signal emmitted when the last parsed expression create an error.
50		void errorWhileParsing(QString expr) const;
51		//! \brief signal emmitted when the last parsed expression is valid.
52		void noMoreParsingError() const;
53
54		public Q_SLOTS:
55
56		//! \brief usefull to let the widget change it's stylesheet when an error occured in the last expression.
	remptUnsubmitted Not Done s/usefull/useful/g rempt: s/usefull/useful/g
57		void setErrorStyle();
58		//! \brief usefull to let the widget reset it's stylesheet when there's no more error.
59		void clearErrorStyle();
60		//! \brief say the widget to return to an error free state.
61		void clearError();
62
63		protected:
64
65		mutable QString* _lastExprParsed;
66		mutable bool _isLastValid;
67		mutable double _oldValue;
68		};
69
70		#endif // KISDOUBLEPARSESPINBOX_H