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/* This file is part of the KDE libraries
Copyright (C) 1999 Daniel M. Duley <mosfet@kde.org>
2006 Tobias Koenig <tokoe@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 version 2 as published by the Free Software Foundation.
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.
*/
#ifndef KODUALCOLORBUTTON_H
#define KODUALCOLORBUTTON_H
#include "kowidgets_export.h"
#include <QWidget>
class KoColor;
class KoColorDisplayRendererInterface;
/**
* @short A widget for selecting two related colors.
*
* KoDualColorButton allows the user to select two cascaded colors (usually a
* foreground and background color). Other features include drag and drop
* from other KDE color widgets, a reset to black and white control, and a
* swap colors control.
*
* When the user clicks on the foreground or background rectangle the
* rectangle is first sunken and the selectionChanged() signal is emitted.
* Further clicks will present a color dialog and emit either the foregroundColorChanged()
* or backgroundColorChanged() if a new color is selected.
*
* Note: With drag and drop when dropping a color the current selected color
* will be set, while when dragging a color it will use whatever color
* rectangle the mouse was pressed inside.
*
* @author Daniel M. Duley <mosfet@kde.org>
*/
class KOWIDGETS_EXPORT KoDualColorButton : public QWidget
{
Q_OBJECT
Q_ENUMS( Selection )
Q_PROPERTY( KoColor foregroundColor READ foregroundColor WRITE setForegroundColor )
Q_PROPERTY( KoColor backgroundColor READ backgroundColor WRITE setBackgroundColor )
Q_PROPERTY( bool popDialog READ popDialog WRITE setPopDialog )
public:
enum Selection {
Foreground,
Background
};
/**
* Constructs a new KoDualColorButton with the supplied foreground and
* background colors.
*
* @param parent The parent widget of the KoDualColorButton.
* @param dialogParent The parent widget of the color selection dialog.
*/
KoDualColorButton(const KoColor &foregroundColor, const KoColor &backgroundColor,
QWidget *parent = 0, QWidget* dialogParent = 0 );
KoDualColorButton(const KoColor &foregroundColor, const KoColor &backgroundColor,
const KoColorDisplayRendererInterface *displayRenderer,
QWidget *parent = 0, QWidget* dialogParent = 0 );
/**
* Destroys the KoDualColorButton.
*/
~KoDualColorButton();
/**
* Returns the current foreground color.
*/
KoColor foregroundColor() const;
/**
* Returns the current background color.
*/
KoColor backgroundColor() const;
/**
* Returns if a dialog with a color chooser will be popped up when clicking
* If false then you could/should connect to the pleasePopDialog signal
* and pop your own dialog. Just set the current color afterwards.
*/
bool popDialog() const;
/**
* Returns the minimum size needed to display the widget and all its
* controls.
*/
virtual QSize sizeHint() const;
public Q_SLOTS:
/**
* Sets the foreground color.
*/
void setForegroundColor( const KoColor &color );
/**
* Sets the background color.
*/
void setBackgroundColor( const KoColor &color );
/**
* Sets if a dialog with a color chooser should be popped up when clicking
* If you set this to false then you could connect to the pleasePopDialog signal
* and pop your own dialog. Just set the current color afterwards.
*/
void setPopDialog( bool popDialog );
Q_SIGNALS:
/**
* Emitted when the foreground color is changed.
*/
void foregroundColorChanged( const KoColor &color );
/**
* Emitted when the background color is changed.
*/
void backgroundColorChanged( const KoColor &color );
/**
* Emitted when the user clicks one of the two color patches.
* You should/could pop you own color chooser dialog in response.
* Also see the popDialog attribute.
*/
void pleasePopDialog( const KoColor &color );
protected:
/**
* Sets the supplied rectangles to the proper size and position for the
* current widget size. You can reimplement this to change the layout
* of the widget. Restrictions are that the swap control will always
* be at the top right, the reset control will always be at the bottom
* left, and you must leave at least a 14x14 space in those corners.
*/
virtual void metrics( QRect &foregroundRect, QRect &backgroundRect );
virtual void paintEvent( QPaintEvent *event );
virtual void mousePressEvent( QMouseEvent *event );
virtual void mouseMoveEvent( QMouseEvent *event );
virtual void mouseReleaseEvent( QMouseEvent *event );
virtual void dragEnterEvent( QDragEnterEvent *event );
virtual void dropEvent( QDropEvent *event );
virtual void changeEvent(QEvent *event);
private:
class Private;
Private *const d;
};
#endif
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