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Diffstat (limited to 'kdeui/kselect.h')
| -rw-r--r-- | kdeui/kselect.h | 373 |
1 files changed, 373 insertions, 0 deletions
diff --git a/kdeui/kselect.h b/kdeui/kselect.h new file mode 100644 index 000000000..bc281341d --- /dev/null +++ b/kdeui/kselect.h @@ -0,0 +1,373 @@ +/* This file is part of the KDE libraries + Copyright (C) 1997 Martin Jones (mjones@kde.org) + + This library is free software; you can redistribute it and/or + modify it under the terms of the GNU Library General Public + License as published by the Free Software Foundation; either + version 2 of the License, or (at your option) any later version. + + This library 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 + Library General Public License for more details. + + You should have received a copy of the GNU Library General Public License + along with this library; see the file COPYING.LIB. If not, write to + the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, + Boston, MA 02110-1301, USA. +*/ +//----------------------------------------------------------------------------- +// Selector widgets for KDE Color Selector, but probably useful for other +// stuff also. + +#ifndef __KSELECT_H__ +#define __KSELECT_H__ + +#include <qwidget.h> +#include <qrangecontrol.h> +#include <qpixmap.h> + +#include <kdelibs_export.h> + +/** + * KXYSelector is the base class for other widgets which + * provides the ability to choose from a two-dimensional + * range of values. The currently chosen value is indicated + * by a cross. An example is the KHSSelector which + * allows to choose from a range of colors, and which is + * used in KColorDialog. + * + * A custom drawing routine for the widget surface has + * to be provided by the subclass. + */ +class KDEUI_EXPORT KXYSelector : public QWidget +{ + Q_OBJECT + Q_PROPERTY( int xValue READ xValue WRITE setXValue ) + Q_PROPERTY( int yValue READ yValue WRITE setYValue ) + +public: + /** + * Constructs a two-dimensional selector widget which + * has a value range of [0..100] in both directions. + */ + KXYSelector( QWidget *parent=0, const char *name=0 ); + /** + * Destructs the widget. + */ + ~KXYSelector(); + + /** + * Sets the current values in horizontal and + * vertical direction. + * @param xPos the horizontal value + * @param yPos the veritcal value + */ + void setValues( int xPos, int yPos ); + + /** + * Sets the current horizontal value + * @param xPos the horizontal value + */ + void setXValue( int xPos ); + + /** + * Sets the current vertical value + * @param yPos the veritcal value + */ + void setYValue( int yPos ); + + /** + * Sets the range of possible values. + */ + void setRange( int minX, int minY, int maxX, int maxY ); + + /** + * @return the current value in horizontal direction. + */ + int xValue() const { return xPos; } + /** + * @return the current value in vertical direction. + */ + int yValue() const { return yPos; } + + /** + * @return the rectangle on which subclasses should draw. + */ + QRect contentsRect() const; + +signals: + /** + * This signal is emitted whenever the user chooses a value, + * e.g. by clicking with the mouse on the widget. + */ + void valueChanged( int x, int y ); + +protected: + /** + * Override this function to draw the contents of the widget. + * The default implementation does nothing. + * + * Draw within contentsRect() only. + */ + virtual void drawContents( QPainter * ); + /** + * Override this function to draw the cursor which + * indicates the currently selected value pair. + */ + virtual void drawCursor( QPainter *p, int xp, int yp ); + + virtual void paintEvent( QPaintEvent *e ); + virtual void mousePressEvent( QMouseEvent *e ); + virtual void mouseMoveEvent( QMouseEvent *e ); + virtual void wheelEvent( QWheelEvent * ); + + /** + * Converts a pixel position to its corresponding values. + */ + void valuesFromPosition( int x, int y, int& xVal, int& yVal ) const; + +private: + void setPosition( int xp, int yp ); + int px; + int py; + int xPos; + int yPos; + int minX; + int maxX; + int minY; + int maxY; + QPixmap store; + +protected: + virtual void virtual_hook( int id, void* data ); +private: + class KXYSelectorPrivate; + KXYSelectorPrivate *d; +}; + + +/** + * KSelector is the base class for other widgets which + * provides the ability to choose from a one-dimensional + * range of values. An example is the KGradientSelector + * which allows to choose from a range of colors. + * + * A custom drawing routine for the widget surface has + * to be provided by the subclass. + */ +class KDEUI_EXPORT KSelector : public QWidget, public QRangeControl +{ + Q_OBJECT + Q_PROPERTY( int value READ value WRITE setValue ) + Q_PROPERTY( int minValue READ minValue WRITE setMinValue ) + Q_PROPERTY( int maxValue READ maxValue WRITE setMaxValue ) +public: + + /** + * Constructs a horizontal one-dimensional selection widget. + */ + KSelector( QWidget *parent=0, const char *name=0 ); + /** + * Constructs a one-dimensional selection widget with + * a given orientation. + */ + KSelector( Orientation o, QWidget *parent = 0L, const char *name = 0L ); + /* + * Destructs the widget. + */ + ~KSelector(); + + /** + * @return the orientation of the widget. + */ + Orientation orientation() const + { return _orientation; } + + /** + * @return the rectangle on which subclasses should draw. + */ + QRect contentsRect() const; + + /** + * Sets the indent option of the widget to i. + * This determines whether a shaded frame is drawn. + */ + void setIndent( bool i ) + { _indent = i; } + /** + * @return whether the indent option is set. + */ + bool indent() const + { return _indent; } + + /** + * Sets the value. + */ + void setValue(int value) + { QRangeControl::setValue(value); } + + /** + * @returns the value. + */ + int value() const + { return QRangeControl::value(); } + + /** + * Sets the min value. + */ + void setMinValue(int value) + { QRangeControl::setMinValue(value); } + + /** + * @return the min value. + */ + int minValue() const + { return QRangeControl::minValue(); } + + /** + * Sets the max value. + */ + void setMaxValue(int value) + { QRangeControl::setMaxValue(value); } + + /** + * @return the max value. + */ + int maxValue() const + { return QRangeControl::maxValue(); } + +signals: + /** + * This signal is emitted whenever the user chooses a value, + * e.g. by clicking with the mouse on the widget. + */ + void valueChanged( int value ); + +protected: + /** + * Override this function to draw the contents of the control. + * The default implementation does nothing. + * + * Draw only within contentsRect(). + */ + virtual void drawContents( QPainter * ); + /** + * Override this function to draw the cursor which + * indicates the current value. This function is + * always called twice, once with argument show=false + * to clear the old cursor, once with argument show=true + * to draw the new one. + */ + virtual void drawArrow( QPainter *painter, bool show, const QPoint &pos ); + + virtual void valueChange(); + virtual void paintEvent( QPaintEvent * ); + virtual void mousePressEvent( QMouseEvent *e ); + virtual void mouseMoveEvent( QMouseEvent *e ); + virtual void wheelEvent( QWheelEvent * ); + +private: + QPoint calcArrowPos( int val ); + void moveArrow( const QPoint &pos ); + + Orientation _orientation; + bool _indent; + +protected: + virtual void virtual_hook( int id, void* data ); +private: + class KSelectorPrivate; + KSelectorPrivate *d; +}; + + +/** + * The KGradientSelector widget allows the user to choose + * from a one-dimensional range of colors which is given as a + * gradient between two colors provided by the programmer. + * + * \image html kgradientselector.png "KDE Gradient Selector Widget" + * + **/ +class KDEUI_EXPORT KGradientSelector : public KSelector +{ + Q_OBJECT + + Q_PROPERTY( QColor firstColor READ firstColor WRITE setFirstColor ) + Q_PROPERTY( QColor secondColor READ secondColor WRITE setSecondColor ) + Q_PROPERTY( QString firstText READ firstText WRITE setFirstText ) + Q_PROPERTY( QString secondText READ secondText WRITE setSecondText ) + +public: + /** + * Constructs a horizontal color selector which + * contains a gradient between white and black. + */ + KGradientSelector( QWidget *parent=0, const char *name=0 ); + /** + * Constructs a colors selector with orientation o which + * contains a gradient between white and black. + */ + KGradientSelector( Orientation o, QWidget *parent=0, const char *name=0 ); + /** + * Destructs the widget. + */ + ~KGradientSelector(); + /** + * Sets the two colors which span the gradient. + */ + void setColors( const QColor &col1, const QColor &col2 ) + { color1 = col1; color2 = col2; update();} + void setText( const QString &t1, const QString &t2 ) + { text1 = t1; text2 = t2; update(); } + + /** + * Set each color on its own. + */ + void setFirstColor( const QColor &col ) + { color1 = col; update(); } + void setSecondColor( const QColor &col ) + { color2 = col; update(); } + + /** + * Set each description on its own + */ + void setFirstText( const QString &t ) + { text1 = t; update(); } + void setSecondText( const QString &t ) + { text2 = t; update(); } + + const QColor firstColor() const + { return color1; } + const QColor secondColor() const + { return color2; } + + const QString firstText() const + { return text1; } + const QString secondText() const + { return text2; } + +protected: + + virtual void drawContents( QPainter * ); + virtual QSize minimumSize() const + { return sizeHint(); } + +private: + void init(); + QColor color1; + QColor color2; + QString text1; + QString text2; + +protected: + virtual void virtual_hook( int id, void* data ); +private: + class KGradientSelectorPrivate; + KGradientSelectorPrivate *d; +}; + + +#endif // __KSELECT_H__ + |