/*
    zoomingicon.cpp
    Copyright (C) 2007 Acekard, www.acekard.com
    Copyright (C) 2007-2009 somebody
    Copyright (C) 2009 yellow wood goblin

    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 3 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 "zoomingicon.h"
#include "gdi.h"



cZoomingIcon::cZoomingIcon()
{
    _x = 0;
    _y = 0;
    _scale = 1.f;
    _needUpdateBuffer = false;

    _sprite.init( 0 );
    _sprite.setPriority( 1 );
    _sprite.setAlpha( 15 );
    _sprite.show();
}

cZoomingIcon::~cZoomingIcon()
{}

void cZoomingIcon::setScale( float scale )
{
    _scale = scale;
}

void cZoomingIcon::setPosition( u8 x, u8 y )
{
    _x = x;
    _y = y;
}

void cZoomingIcon::setBufferChanged()
{
    _needUpdateBuffer = true;
}

void cZoomingIcon::update()
{
    static float scaleFactor = 0.015;
    if( _visible ) {
        _scale += scaleFactor;
        if( _scale > 1.2 || _scale < 0.9  )
            scaleFactor *= -1;
        _sprite.setScale( _scale, _scale );
        if( !_sprite.visible() )
            _sprite.show();
    } else {
        _scale = 1.0;
        scaleFactor = 0.015;
        _sprite.setScale( 1.f, 1.f );
        if( _sprite.visible() )
            _sprite.hide();
    }

    _sprite.setScale( _scale, _scale );
    _sprite.setPosition( _x, _y );

    if( _needUpdateBuffer ) {
        DC_FlushRange(_buffer,32*32*2);
        dmaCopy( _buffer, _sprite.buffer(), 32 * 32 * 2 );
        DC_InvalidateRange(_sprite.buffer(),32*32*2);
        _needUpdateBuffer = false;
    }
}

void cZoomingIcon::show()
{
    if( !_visible ) {
        _visible = true;
        gdi().maskBlt( _buffer, _x, _y, 32, 32, GE_MAIN ); // sprite only available on main engine
    }
}

void cZoomingIcon::hide()
{
    if( _visible ) {
        _visible = false;
        gdi().maskBlt( _buffer, _x, _y, 32, 32, GE_MAIN ); // sprite only available on main engine
    }
}

void cZoomingIcon::reset()
{
    _scale = 1.f;
}