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147 lines
3.8 KiB
C++
147 lines
3.8 KiB
C++
/* This file is part of the KDE libraries
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Copyright (C) 1997 Martin Jones (mjones@kde.org)
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public
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License as published by the Free Software Foundation; either
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version 2 of the License, or (at your option) any later version.
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This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public License
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along with this library; see the file COPYING.LIB. If not, write to
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the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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Boston, MA 02110-1301, USA.
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*/
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#ifndef KXYSELECTOR_H
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#define KXYSELECTOR_H
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#include <kdeui_export.h>
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#include <QtGui/QWidget>
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#include <QtGui/QPixmap>
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/**
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* KXYSelector is the base class for other widgets which
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* provides the ability to choose from a two-dimensional
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* range of values. The currently chosen value is indicated
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* by a cross.
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*
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* A custom drawing routine for the widget surface has
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* to be provided by the subclass.
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*/
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class KDEUI_EXPORT KXYSelector : public QWidget
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{
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Q_OBJECT
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Q_PROPERTY( int xValue READ xValue WRITE setXValue )
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Q_PROPERTY( int yValue READ yValue WRITE setYValue )
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public:
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/**
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* Constructs a two-dimensional selector widget which
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* has a value range of [0..100] in both directions.
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*/
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explicit KXYSelector( QWidget *parent=0 );
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/**
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* Destructs the widget.
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*/
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~KXYSelector();
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/**
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* Sets the current values in horizontal and
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* vertical direction.
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* @param xPos the horizontal value
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* @param yPos the vertical value
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*/
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void setValues( int xPos, int yPos );
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/**
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* Sets the current horizontal value
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* @param xPos the horizontal value
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*/
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void setXValue( int xPos );
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/**
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* Sets the current vertical value
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* @param yPos the vertical value
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*/
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void setYValue( int yPos );
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/**
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* Sets the range of possible values.
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*/
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void setRange( int minX, int minY, int maxX, int maxY );
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/**
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* Sets the color used to draw the marker
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* @param col the color
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*/
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void setMarkerColor( const QColor &col );
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/**
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* @return the current value in horizontal direction.
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*/
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int xValue() const;
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/**
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* @return the current value in vertical direction.
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*/
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int yValue() const;
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/**
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* @return the rectangle on which subclasses should draw.
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*/
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QRect contentsRect() const;
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/**
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* Reimplemented to give the widget a minimum size
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*/
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virtual QSize minimumSizeHint() const;
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Q_SIGNALS:
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/**
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* This signal is emitted whenever the user chooses a value,
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* e.g. by clicking with the mouse on the widget.
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*/
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void valueChanged( int x, int y );
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protected:
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/**
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* Override this function to draw the contents of the widget.
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* The default implementation does nothing.
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*
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* Draw within contentsRect() only.
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*/
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virtual void drawContents( QPainter * );
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/**
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* Override this function to draw the marker which
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* indicates the currently selected value pair.
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*/
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virtual void drawMarker( QPainter *p, int xp, int yp );
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virtual void paintEvent( QPaintEvent *e );
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virtual void mousePressEvent( QMouseEvent *e );
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virtual void mouseMoveEvent( QMouseEvent *e );
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virtual void wheelEvent( QWheelEvent * );
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/**
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* Converts a pixel position to its corresponding values.
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*/
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void valuesFromPosition( int x, int y, int& xVal, int& yVal ) const;
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private:
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void setPosition( int xp, int yp );
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private:
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class Private;
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friend class Private;
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Private * const d;
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Q_DISABLE_COPY(KXYSelector)
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};
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#endif /* KXYSELECTOR_H */
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