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/***************************************************************************
* Copyright (C) 2006 by Marco Martin *
* notmart@gmail.com *
* *
* 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, write to the *
* Free Software Foundation, Inc., *
* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
***************************************************************************/
#include "tastybutton.h"
#include <qimage.h>
#include <qpainter.h>
#include <qpalette.h>
#include <qcolor.h>
#include <kimageeffect.h>
TastyButton::TastyButton(QWidget *parent)
: QToolButton(parent)
{
iconEffect = new KIconEffect();
iconEffect->init();
}
TastyButton::~TastyButton()
{
}
void TastyButton::drawButton( QPainter * p )
{
//background image or pseudo transparency
if( parentWidget()->erasePixmap() )
{
const QPixmap erasePix(size());
QPainter buffPainter(&erasePix);
buffPainter.drawPixmap(QPoint(0, 0), *parentWidget()->erasePixmap(), geometry());
buffPainter.end();
QImage eraseImg = erasePix.convertToImage();
if( isDown() )
{
KImageEffect::fade(eraseImg, 0.25, black);
p->drawPixmap(rect(), eraseImg );
}
else if( uses3D() )
{
KImageEffect::fade(eraseImg, 0.4, white);
p->drawPixmap(rect(), eraseImg );
}
else
p->drawPixmap(rect(), erasePix );
//lightScore = 0 grey, >0 lighter <0 darker
int lightScore = 0;
//chacks the brightness of 10 pixels of the diagonal
//we won't be 100% sure if this reflects the global brightess of the image
//but it seems to work well
int x = 0;
int y = 0;
while( x < eraseImg.width() && y < eraseImg.height() && x < 10 )
{
x=++y;
//deciding the text color to use
int h,s,v;
QColor(eraseImg.pixel(x,y)).getHsv( h, s, v );
// is purely empirical :)
if( v > 140) lightScore++;
else lightScore--;
}
if( lightScore < 0 )
setPaletteForegroundColor(white);
else
setPaletteForegroundColor(black);
}
//simple background color
else
{
if( isDown() )
{
p->fillRect(rect(), colorGroup().background().dark(120));
}
else if( uses3D() )
{
p->fillRect(rect(), colorGroup().background().light(120));
}
else
{
p->fillRect(rect(), colorGroup().background());
}
}
drawButtonLabel(p);
}
void TastyButton::setIconSet( QIconSet is )
{
is.setPixmap(iconEffect->apply(is.pixmap(),
(int)KIcon::Panel,
(int)KIcon::ActiveState),
QIconSet::Automatic,
QIconSet::Active);
QToolButton::setIconSet( is );
}
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