/********************************************************************
 KWin - the KDE window manager
 This file is part of the KDE project.

Copyright (C) 2006 Lubos Lunak <l.lunak@kde.org>

This program 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 program 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 "scalein.h"

namespace KWin
{

KWIN_EFFECT( scalein, ScaleInEffect )

void ScaleInEffect::prePaintScreen( ScreenPrePaintData& data, int time )
    {
    if( !mTimeLineWindows.isEmpty() )
        data.mask |= PAINT_SCREEN_WITH_TRANSFORMED_WINDOWS;
    effects->prePaintScreen( data, time );
    }

void ScaleInEffect::prePaintWindow( EffectWindow* w, WindowPrePaintData& data, int time )
    {
    if( mTimeLineWindows.contains( w ) )
        {
        mTimeLineWindows[ w ].setCurveShape( TimeLine::EaseOutCurve );
        mTimeLineWindows[ w ].addTime( time );
        if( mTimeLineWindows[ w ].value() < 1 )
            data.setTransformed();
        else
            mTimeLineWindows.remove( w );
        }
    effects->prePaintWindow( w, data, time );
    }

void ScaleInEffect::paintWindow( EffectWindow* w, int mask, QRegion region, WindowPaintData& data )
    {
    if( mTimeLineWindows.contains( w ) && isScaleWindow( w ) )
        {
        data.opacity *= mTimeLineWindows[ w ].value();
        data.xScale *= mTimeLineWindows[ w ].value();
        data.yScale *= mTimeLineWindows[ w ].value();
        data.xTranslate += int( w->width() / 2 * ( 1 - mTimeLineWindows[ w ].value() ) );
        data.yTranslate += int( w->height() / 2 * ( 1 - mTimeLineWindows[ w ].value() ) );
        }
    effects->paintWindow( w, mask, region, data );
    }

bool ScaleInEffect::isScaleWindow( EffectWindow* w )
    {
    // TODO: isSpecialWindow is rather generic, maybe tell windowtypes separately?
    if ( w->isPopupMenu() || w->isSpecialWindow() || w->isUtility() )
        return false;
    return true;
    }

void ScaleInEffect::postPaintWindow( EffectWindow* w )
    {
    if( mTimeLineWindows.contains( w ) )
        w->addRepaintFull(); // trigger next animation repaint
    effects->postPaintWindow( w );
    }

void ScaleInEffect::windowAdded( EffectWindow* c )
    {
    if( c->isOnCurrentDesktop())
        {
        mTimeLineWindows[ c ].setDuration( animationTime( 250 ));
        mTimeLineWindows[ c ].setProgress( 0.0 );
        c->addRepaintFull();
        }
    }

void ScaleInEffect::windowClosed( EffectWindow* c )
    {
    mTimeLineWindows.remove( c );
    }

} // namespace