Blame style/animations/adwaitadialdata.cpp

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/*************************************************************************
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 * Copyright (C) 2014 by Hugo Pereira Da Costa <hugo.pereira@free.fr>    *
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 *                                                                       *
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 * This program is free software; you can redistribute it and/or modify  *
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 * it under the terms of the GNU General Public License as published by  *
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 * the Free Software Foundation; either version 2 of the License, or     *
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 * (at your option) any later version.                                   *
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 *                                                                       *
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 * This program 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         *
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 * GNU General Public License for more details.                          *
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 *                                                                       *
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 * You should have received a copy of the GNU General Public License     *
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 * along with this program; if not, write to the                         *
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 * Free Software Foundation, Inc.,                                       *
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 * 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA .        *
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 *************************************************************************/
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#include "adwaitadialdata.h"
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#include <QHoverEvent>
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#include <QDial>
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namespace Adwaita
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{
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    //______________________________________________
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    DialData::DialData( QObject* parent, QWidget* target, int duration ):
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        WidgetStateData( parent, target, duration ),
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        _position( -1, -1 )
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    { target->installEventFilter( this ); }
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    //______________________________________________
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    bool DialData::eventFilter( QObject* object, QEvent* event )
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    {
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        if( object != target().data() )
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        { return WidgetStateData::eventFilter( object, event ); }
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        // check event type
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        switch( event->type() )
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        {
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            case QEvent::HoverEnter:
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            case QEvent::HoverMove:
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            hoverMoveEvent( object, event );
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            break;
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            case QEvent::HoverLeave:
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            hoverLeaveEvent( object, event );
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            break;
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            default: break;
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        }
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        return WidgetStateData::eventFilter( object, event );
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    }
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    //______________________________________________
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    void DialData::hoverMoveEvent(  QObject* object, QEvent* event )
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    {
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        // try cast object to dial
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        QDial* scrollBar( qobject_cast<QDial*>( object ) );
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        if( !scrollBar || scrollBar->isSliderDown() ) return;
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        // cast event
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        QHoverEvent *hoverEvent = static_cast<QHoverEvent*>(event);
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        // store position
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        _position = hoverEvent->pos();
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        // trigger animation if position match handle rect
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        updateState( _handleRect.contains( _position ) );
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    }
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    //______________________________________________
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    void DialData::hoverLeaveEvent(  QObject*, QEvent* )
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    {
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        // reset hover state
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        updateState( false );
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        // reset mouse position
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        _position = QPoint( -1, -1 );
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    }
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}