//---------------------------------------------------------------------------
/*
QtLedWidget, Qt widget for displaying the Led class
Copyright (C) 2011-2015 Richel Bilderbeek
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/>.
*/
//---------------------------------------------------------------------------
//From http://www.richelbilderbeek.nl/CppQtLedWidget.htm
//---------------------------------------------------------------------------
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Weffc++"
#pragma GCC diagnostic ignored "-Wunused-local-typedefs"
#pragma GCC diagnostic ignored "-Wunused-but-set-parameter"
#include "qtledwidget.h"
#include <cassert>
#include <iostream>
#include <boost/numeric/conversion/cast.hpp>
#include <QResizeEvent>
#include <QPainter>
#include "led.h"
//#include "trace.h"
#pragma GCC diagnostic pop
ribi::QtLedWidget::QtLedWidget(
QWidget *parent,
const double intensity,
const unsigned char red,
const unsigned char green,
const unsigned char blue)
: QWidget(parent),
m_widget(new LedWidget(intensity,red,green,blue))
{
assert(m_widget);
m_widget->GetLed()->m_signal_color_changed.connect(
boost::bind(
&ribi::QtLedWidget::repaint,
this));
m_widget->GetLed()->m_signal_intensity_changed.connect(
boost::bind(
&ribi::QtLedWidget::repaint,
this));
m_widget->m_signal_geometry_changed.connect(
boost::bind(
&ribi::QtLedWidget::OnResize,
this));
GetWidget()->SetGeometry(0,0,100,100);
GetWidget()->GetLed()->SetColor(255,124,0);
GetWidget()->GetLed()->SetIntensity(0.99);
}
///Draw a Led from a Led
void ribi::QtLedWidget::DrawLed(
QPainter& painter,
const int left, const int top,
const int width, const int height,
const Led * const led)
{
assert(width > 0);
assert(height > 0);
const int red = boost::numeric_cast<int>(led->GetRed());
const int green = boost::numeric_cast<int>(led->GetGreen());
const int blue = boost::numeric_cast<int>(led->GetBlue());
const double intensity = led->GetIntensity();
//Fraction red/green/blue
const double fR = static_cast<double>(red ) / 255.0;
const double fG = static_cast<double>(green) / 255.0;
const double fB = static_cast<double>(blue ) / 255.0;
{
//Draw circle and major surface
const double maxBrightness = 0.66 * 255.0;
const double minBrightness = 0.25 * maxBrightness;
const int r = static_cast<int>(
minBrightness + (fR * intensity * (maxBrightness - minBrightness) ) );
const int g = static_cast<int>(
minBrightness + (fG * intensity * (maxBrightness - minBrightness) ) );
const int b = static_cast<int>(
minBrightness + (fB * intensity * (maxBrightness - minBrightness) ) );
assert( r >= 0 ); assert( r < 256);
assert( g >= 0 ); assert( g < 256);
assert( b >= 0 ); assert( b < 256);
const int pen_width = 1 + (std::min(width,height) / 25);
assert(pen_width > 0);
{
QPen pen = painter.pen();
pen.setWidth(pen_width);
pen.setColor(QColor(0,0,0));
painter.setPen(pen);
}
painter.setBrush(QBrush(QColor(r,g,b)));
painter.drawEllipse(
left + pen_width,
top + pen_width,
width - (4 * pen_width),
height - (4 * pen_width)
);
}
{
//Draw topleft smaller lighter surface
const double maxBrightness = 1.00 * 255.0;
const double minBrightness = 0.25 * maxBrightness;
const int r = static_cast<int>(
minBrightness + (fR * intensity * (maxBrightness - minBrightness) ) );
const int g = static_cast<int>(
minBrightness + (fG * intensity * (maxBrightness - minBrightness) ) );
const int b = static_cast<int>(
minBrightness + (fB * intensity * (maxBrightness - minBrightness) ) );
assert( r >= 0 ); assert( r < 256);
assert( g >= 0 ); assert( g < 256);
assert( b >= 0 ); assert( b < 256);
const int x = left + (width / 2) - (0.707 * static_cast<double>(width ) * 0.5);
const int y = top + (height / 2) - (0.707 * static_cast<double>(height) * 0.5);
const int w = (0.707 * static_cast<double>(width ) * 0.5);
const int h = (0.707 * static_cast<double>(height) * 0.5);
{
QPen pen = painter.pen();
pen.setWidth(1);
pen.setColor(QColor(r,g,b));
painter.setPen(pen);
}
painter.setBrush(QBrush(QColor(r,g,b)));
painter.drawEllipse(x,y,w,h);
}
{
//Draw bottomright smaller darker surface
const double maxBrightness = 0.33 * 255.0;
const double minBrightness = 0.25 * maxBrightness;
const int r = static_cast<int>(
minBrightness + (fR * intensity * (maxBrightness - minBrightness) ) );
const int g = static_cast<int>(
minBrightness + (fG * intensity * (maxBrightness - minBrightness) ) );
const int b = static_cast<int>(
minBrightness + (fB * intensity * (maxBrightness - minBrightness) ) );
assert( r >= 0 ); assert( r < 256);
assert( g >= 0 ); assert( g < 256);
assert( b >= 0 ); assert( b < 256);
const int x = left + (width / 2) - 1;
const int y = top + (height / 2) - 1;
const int w = (0.707 * static_cast<double>(width ) * 0.5);
const int h = (0.707 * static_cast<double>(height) * 0.5);
{
QPen pen = painter.pen();
pen.setWidth(1);
pen.setColor(QColor(r,g,b));
painter.setPen(pen);
}
painter.setBrush(QBrush(QColor(r,g,b)));
painter.drawEllipse(x,y,w,h);
}
}
void ribi::QtLedWidget::DrawLed(
QPainter& painter,
const boost::shared_ptr<const LedWidget> widget)
{
DrawLed(
painter,
widget->GetLeft(),
widget->GetTop(),
widget->GetWidth(),
widget->GetHeight(),
widget->GetLed()
);
}
std::string ribi::QtLedWidget::GetVersion() noexcept
{
return "1.5";
}
std::vector<std::string> ribi::QtLedWidget::GetVersionHistory() noexcept
{
return {
"2011-04-10: Version 1.0: initial version",
"2011-04-11: Version 1.1: added About information",
"2011-09-08: Version 1.2: removed redundant signals",
"2012-07-07: Version 1.3: added resizeEvent",
"2012-08-26: Version 1.4: fixed bug in resizeEvent",
"2014-03-28: Version 1.5: replaced custom Rect class by Boost.Geometry"
};
}
void ribi::QtLedWidget::OnResize()
{
this->setGeometry(
this->GetWidget()->GetLeft(),
this->GetWidget()->GetTop(),
this->GetWidget()->GetWidth(),
this->GetWidget()->GetHeight()
);
this->repaint();
}
void ribi::QtLedWidget::paintEvent(QPaintEvent *)
{
QPainter p(this);
DrawLed(p,m_widget);
}
void ribi::QtLedWidget::resizeEvent(QResizeEvent * )
{
m_widget->SetGeometry(
x(), //geometry().left(),
y(), //geometry().top(),
width(), //geometry().width(),
height() //geometry().height()
);
// 0, //x(), //geometry().left(),
// 0, //y(), //geometry().top(),
// width(), //geometry().width(),
// height() //geometry().height()
}
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