Blame style/animations/adwaitascrollbarengine.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 "adwaitascrollbarengine.h"
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#include <QEvent>
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namespace Adwaita
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{
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    //____________________________________________________________
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    bool ScrollBarEngine::registerWidget( QWidget* widget, AnimationModes mode )
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    {
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        // check widget
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        if( !widget ) return false;
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        // only handle hover and focus
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        if( mode&AnimationHover && !dataMap(AnimationHover).contains( widget ) ) { dataMap(AnimationHover).insert( widget, new ScrollBarData( this, widget, duration() ), enabled() ); }
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        if( mode&AnimationFocus && !dataMap(AnimationFocus).contains( widget ) ) { dataMap(AnimationFocus).insert( widget, new WidgetStateData( this, widget, duration() ), enabled() ); }
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        // connect destruction signal
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        connect( widget, SIGNAL(destroyed(QObject*)), this, SLOT(unregisterWidget(QObject*)), Qt::UniqueConnection );
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        return true;
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    }
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    //____________________________________________________________
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    bool ScrollBarEngine::isAnimated( const QObject* object, AnimationMode mode, QStyle::SubControl control )
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    {
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        if( mode == AnimationHover )
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        {
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            if( DataMap<WidgetStateData>::Value data = this->data( object, AnimationHover ) )
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            {
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                const ScrollBarData* scrollBarData( static_cast<const ScrollBarData*>( data.data() ) );
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                Animation::Pointer animation = scrollBarData->animation( control );
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                return animation.data()->isRunning();
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            } else return false;
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        } else if( control == QStyle::SC_ScrollBarSlider ) {
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            return WidgetStateEngine::isAnimated( object, mode );
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        } else return false;
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    }
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    //____________________________________________________________
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    AnimationMode ScrollBarEngine::animationMode( const QObject* object, QStyle::SubControl control )
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    {
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        // enable state
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        if( isAnimated( object, AnimationHover, control ) ) return AnimationHover;
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        else if( isAnimated( object, AnimationFocus, control ) ) return AnimationFocus;
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        else if( isAnimated( object, AnimationPressed, control ) ) return AnimationPressed;
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        else return AnimationNone;
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    }
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    //____________________________________________________________
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    qreal ScrollBarEngine::opacity( const QObject* object, QStyle::SubControl control )
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    {
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        if( isAnimated( object, AnimationHover, control ) ) return static_cast<const ScrollBarData*>(data( object, AnimationHover ).data())->opacity( control );
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        else if( control == QStyle::SC_ScrollBarSlider ) return WidgetStateEngine::buttonOpacity( object );
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        return AnimationData::OpacityInvalid;
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    }
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}