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#ifndef adwaitatransitionwidget_h
#define adwaitatransitionwidget_h
//////////////////////////////////////////////////////////////////////////////
// adwaitatransitionwidget.h
// stores event filters and maps widgets to transitions for transitions
// -------------------
//
// Copyright (c) 2009 Hugo Pereira Da Costa <hugo.pereira@free.fr>
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to
// deal in the Software without restriction, including without limitation the
// rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
// sell copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
// IN THE SOFTWARE.
//////////////////////////////////////////////////////////////////////////////
#include "adwaitaanimation.h"
#include "adwaita.h"
#include <QWidget>
#include <cmath>
namespace Adwaita
{
//* temporary widget used to perform smooth transition between one widget state and another
class TransitionWidget: public QWidget
{
Q_OBJECT
//* declare opacity property
Q_PROPERTY( qreal opacity READ opacity WRITE setOpacity )
public:
//* shortcut to painter
typedef WeakPointer<TransitionWidget> Pointer;
//* constructor
TransitionWidget( QWidget* parent, int duration );
//* destructor
virtual ~TransitionWidget( void ) = default;
//*@name flags
//@{
enum Flag
{
None = 0,
GrabFromWindow = 1<<0,
Transparent = 1<<1,
PaintOnWidget = 1<<2
};
Q_DECLARE_FLAGS(Flags, Flag)
void setFlags( Flags value )
{ _flags = value; }
void setFlag( Flag flag, bool value = true )
{
if( value ) _flags |= flag;
else _flags &= (~flag);
}
bool testFlag( Flag flag ) const
{ return _flags.testFlag( flag ); }
//@}
//* duration
void setDuration( int duration )
{
if( _animation )
{ _animation.data()->setDuration( duration ); }
}
//* duration
int duration( void ) const
{ return ( _animation ) ? _animation.data()->duration() : 0; }
//* steps
static void setSteps( int value )
{ _steps = value; }
//*@name opacity
//@{
virtual qreal opacity( void ) const
{ return _opacity; }
virtual void setOpacity( qreal value )
{
value = digitize( value );
if( _opacity == value ) return;
_opacity = value;
update();
}
//@}
//@name pixmaps handling
//@{
//* start
void resetStartPixmap( void )
{ setStartPixmap( QPixmap() ); }
//* start
void setStartPixmap( QPixmap pixmap )
{ _startPixmap = pixmap; }
//* start
const QPixmap& startPixmap( void ) const
{ return _startPixmap; }
//* end
void resetEndPixmap( void )
{ setEndPixmap( QPixmap() ); }
//* end
void setEndPixmap( QPixmap pixmap )
{
_endPixmap = pixmap;
_currentPixmap = pixmap;
}
//* start
const QPixmap& endPixmap( void ) const
{ return _endPixmap; }
//* current
const QPixmap& currentPixmap( void ) const
{ return _currentPixmap; }
//@}
//* grap pixmap
QPixmap grab( QWidget* = 0, QRect = QRect() );
//* true if animated
virtual bool isAnimated( void ) const
{ return _animation.data()->isRunning(); }
//* end animation
virtual void endAnimation( void )
{ if( _animation.data()->isRunning() ) _animation.data()->stop(); }
//* animate transition
virtual void animate( void )
{
if( _animation.data()->isRunning() ) _animation.data()->stop();
_animation.data()->start();
}
//* true if paint is enabled
static bool paintEnabled( void );
protected:
//* generic event filter
virtual bool event( QEvent* );
//* paint event
virtual void paintEvent( QPaintEvent* );
//* grab widget background
/*!
Background is not rendered properly using QWidget::render.
Use home-made grabber instead. This is directly inspired from bespin.
Copyright (C) 2007 Thomas Luebking <thomas.luebking@web.de>
*/
virtual void grabBackground( QPixmap&, QWidget*, QRect& ) const;
//* grab widget
virtual void grabWidget( QPixmap&, QWidget*, QRect& ) const;
//* fade pixmap
virtual void fade( const QPixmap& source, QPixmap& target, qreal opacity, const QRect& ) const;
//* apply step
virtual qreal digitize( const qreal& value ) const
{
if( _steps > 0 ) return std::floor( value*_steps )/_steps;
else return value;
}
private:
//* Flags
Flags _flags = None;
//* paint enabled
static bool _paintEnabled;
//* internal transition animation
Animation::Pointer _animation;
//* animation starting pixmap
QPixmap _startPixmap;
//* animation starting pixmap
QPixmap _localStartPixmap;
//* animation starting pixmap
QPixmap _endPixmap;
//* current pixmap
QPixmap _currentPixmap;
//* current state opacity
qreal _opacity = 0;
//* steps
static int _steps;
};
}
#endif
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