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#ifndef TransparentWidget_h
#define TransparentWidget_h
/******************************************************************************
*
* Copyright (C) 2002 Hugo PEREIRA <mailto: hugo.pereira@free.fr>
*
* This is free software; you can redistribute it and/or modify it under the
* terms of the GNU General Public License as published by the Free Software
* Foundation; either version 2 of the License, or (at your option) any later
* version.
*
* This software 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 General Public License
* for more details.
*
* You should have received a copy of the GNU General Public License along with
* this program. If not, see <http://www.gnu.org/licenses/>.
*
*******************************************************************************/
#include "Counter.h"
#include "Margins.h"
#include <QAction>
#include <QPaintEvent>
#include <QResizeEvent>
#include <QShowEvent>
#include <QWidget>
namespace Transparency
{
//* transparent widget
class TransparentWidget: public QWidget, private Base::Counter<TransparentWidget>
{
//* Qt meta object declaration
Q_OBJECT
public:
//* constructor
explicit TransparentWidget( QWidget* = nullptr, Qt::WindowFlags flags = 0 );
//*@name actions
//@{
//* reload blur region action
QAction& reloadBlurRegionAction() const
{ return *reloadBlurRegionAction_; }
//* inverse colors
QAction& inverseColorsAction() const
{ return *inverseColorsAction_; }
//@}
//*@name accessors
//@{
//* foreground
virtual const QColor& foregroundColor() const
{ return inverseColorsAction().isChecked() ? shadowColor_ : foregroundColor_; }
//* shadow
virtual const QColor& shadowColor() const
{ return inverseColorsAction().isChecked() ? foregroundColor_ : shadowColor_; }
//* foreground intensity
virtual int foregroundIntensity() const
{ return foregroundIntensity_; }
//* shadow offset
virtual int shadowOffset() const
{ return shadowOffset_; }
//@}
//*@name modifiers
//@{
//* background changed
void setBackgroundChanged( bool value )
{ backgroundChanged_ = value; }
//@}
public Q_SLOTS:
//* force reloading of the background
virtual void setBackgroundChanged();
protected:
//* foreground
virtual void _setForegroundColor( const QColor& );
//* shadow
virtual void _setShadowColor( const QColor& );
//* tint
virtual void _setTintColor( const QColor& );
//* tint color
virtual const QColor& _tintColor() const
{ return tintColor_; }
//* shadow offset
virtual void _setShadowOffset( int value )
{ shadowOffset_ = value; }
//* foreground intensity
virtual void _setForegroundIntensity( int value );
//* background pixmap
virtual QPixmap& _backgroundPixmap()
{ return backgroundPixmap_; }
//* background pixmap
virtual const QPixmap& _backgroundPixmap() const
{ return backgroundPixmap_; }
//*@name event handlers
//@{
//* resize
void resizeEvent( QResizeEvent* ) override;
//* show
void showEvent( QShowEvent* ) override;
//* paint
void paintEvent( QPaintEvent* ) override;
//@}
//*@name margins
//@{
//* margins
const Base::Margins& _margins() const
{ return margins_; }
//* clear margins
void _clearMargins()
{ margins_.clear(); }
//* margins
void _setMargins( const Base::Margins& margins )
{ margins_ = margins; }
//* margins
void _setMargins( int margins )
{ margins_ = Base::Margins( margins ); }
//* outer padding
Base::Margins _outerPadding() const
{ return outerPadding_; }
//* clear outer padding
void _clearOuterPadding()
{ outerPadding_.clear(); }
//* outer padding
void _setOuterPadding( const Base::Margins& margins )
{ outerPadding_ = margins; }
//* outer padding
void _setOuterPadding( int margins )
{ outerPadding_ = Base::Margins( margins ); }
//@}
//* background changed
bool _backgroundChanged() const
{ return backgroundChanged_; }
//* paint background on devide
virtual void _paintBackground( QPaintDevice&, const QRect& );
//* paint main widget on devide
/*! this must be re-implemented by derived classes */
virtual void _paint( QPaintDevice&, const QRect& )
{}
//* update input shape (to prevent input events in outerPadding region)
virtual void _updateInputShape();
//* update blur region
virtual void _updateBlurRegion( const QRegion& );
protected Q_SLOTS:
//* update background pixmap
virtual void _updateBackgroundPixmap();
//* update blur region
virtual void _updateBlurRegion()
{
if( blurRegion_.isEmpty() ) blurRegion_ = rect().translated( mapTo( window(), QPoint(0,0) ) );
_updateBlurRegion( blurRegion_ );
}
//* toggle inverse colors
virtual void _toggleInverseColors( bool );
private Q_SLOTS:
//* update configuration
void _updateConfiguration();
private:
//* actions
void _installActions();
//*@name actions
//@{
//* reload blur region
QAction* reloadBlurRegionAction_ = nullptr;
//* inverse colors
QAction* inverseColorsAction_ = nullptr;
//@}
//* true if input shape is set
bool hasInputShape_ = false;
//* true when background needs to be reloaded
bool backgroundChanged_ = true;
//* foreground
QColor foregroundColor_;
//* shadow
QColor shadowColor_;
//* tint color
QColor tintColor_;
//* foreground intensity
int foregroundIntensity_ = 255;
//* shadow offset
int shadowOffset_ = 0;
//* margins
Base::Margins margins_;
//* margins
Base::Margins outerPadding_;
//* store last blur region
QRegion blurRegion_;
#if defined(Q_OS_WIN)
//* widget pixmap
/*! it is used as widget storage when using full translucency */
QPixmap widgetPixmap_;
#endif
//* background pixmap
QPixmap backgroundPixmap_;
};
};
#endif
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