source: BAORadio/libindi/libindi/BAOcontrol/qledindicator.cpp @ 689

/***************************************************************************
 *   Copyright (C) 2010 by Tn                                              *
 *   thenobody@poczta.fm                                                   *
 *                                                                         *
 *   This program is free software; you can redistribute it and/or modify  *
 *   it under the terms of the GNU Library 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 Library 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 <QPainter>

#include "qledindicator.h"

const qreal QLedIndicator::scaledSize = 2500; /* Visual Studio static const mess */

QLedIndicator::QLedIndicator(QWidget *parent) : QAbstractButton(parent)
{
    setMinimumSize(24,24);
    setCheckable(true);
    onColor1 =  QColor(0,255,0);
    onColor2 =  QColor(0,192,0);
    offColor1 = QColor(0,28,0);
    offColor2 = QColor(0,128,0);
    onColor1r =  QColor(255,0,0);
    onColor2r =  QColor(192,0,0);
    offColor1r = QColor(28,0,0);
    offColor2r = QColor(128,0,0);

    red= false;
}

void QLedIndicator::resizeEvent(QResizeEvent *event) {
    update();
}

void QLedIndicator::paintEvent(QPaintEvent *event) {
  
    qreal realSize = qMin(width(), height());

    QRadialGradient gradient;
    QPainter painter(this);
    QPen     pen(Qt::black);
    pen.setWidth(1);

    painter.setRenderHint(QPainter::Antialiasing);
    painter.translate(width()/2, height()/2);
    painter.scale(realSize/scaledSize, realSize/scaledSize);

    gradient = QRadialGradient (QPointF(-500,-500), 1500, QPointF(-500,-500));
    gradient.setColorAt(0, QColor(224,224,224));
    gradient.setColorAt(1, QColor(28,28,28));
    painter.setPen(pen);
    painter.setBrush(QBrush(gradient));
    painter.drawEllipse(QPointF(0,0), 500, 500);

    gradient = QRadialGradient (QPointF(500,500), 1500, QPointF(500,500));
    gradient.setColorAt(0, QColor(224,224,224));
    gradient.setColorAt(1, QColor(28,28,28));
    painter.setPen(pen);
    painter.setBrush(QBrush(gradient));
    painter.drawEllipse(QPointF(0,0), 450, 450);

    painter.setPen(pen);
    if (red)
    {
        if( isChecked() ) {
            gradient = QRadialGradient (QPointF(-500,-500), 1500, QPointF(-500,-500));
            gradient.setColorAt(0, onColor1r);
            gradient.setColorAt(1, onColor2r);
        } else {
            gradient = QRadialGradient (QPointF(500,500), 1500, QPointF(500,500));
            gradient.setColorAt(0, offColor1r);
            gradient.setColorAt(1, offColor2r);
        }
    }
    else {
        if( isChecked() ) {
            gradient = QRadialGradient (QPointF(-500,-500), 1500, QPointF(-500,-500));
            gradient.setColorAt(0, onColor1);
            gradient.setColorAt(1, onColor2);
        } else {
            gradient = QRadialGradient (QPointF(500,500), 1500, QPointF(500,500));
            gradient.setColorAt(0, offColor1);
            gradient.setColorAt(1, offColor2);
        }
    }
    painter.setBrush(gradient);
    painter.drawEllipse(QPointF(0,0), 400, 400);
}