//---------------------------------------------------------------------------
/*
WtLedWidget, Wt 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/CppWtLedWidget.htm
//---------------------------------------------------------------------------
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Weffc++"
#pragma GCC diagnostic ignored "-Wunused-local-typedefs"
#pragma GCC diagnostic ignored "-Wunused-but-set-variable"
#include <boost/bind.hpp>
#include <boost/numeric/conversion/cast.hpp>
#include <Wt/WPainter>
#include <Wt/WPen>
#include <Wt/WBrush>
#include "geometry.h"
#include "led.h"
#include "ledwidget.h"
#include "wtledwidget.h"
#pragma GCC diagnostic pop
ribi::WtLedWidget::WtLedWidget(
const double intensity,
const unsigned char red,
const unsigned char green,
const unsigned char blue)
: m_widget(new LedWidget(0,0,99,99,intensity,red,green,blue))
{
assert(m_widget);
m_widget->GetLed()->m_signal_color_changed.connect(
boost::bind(
&ribi::WtLedWidget::DoRepaint,
this));
m_widget->GetLed()->m_signal_intensity_changed.connect(
boost::bind(
&ribi::WtLedWidget::DoRepaint,
this));
m_widget->m_signal_geometry_changed.connect(
boost::bind(
&ribi::WtLedWidget::OnResize,
this));
m_widget->SetGeometry(0,0,100,100);
m_widget->GetLed()->SetColor(254,254,254);
m_widget->GetLed()->SetIntensity(0.98);
}
void ribi::WtLedWidget::DoRepaint()
{
this->update();
}
void ribi::WtLedWidget::DrawLed(
Wt::WPainter& painter,
const int left, const int top,
const int width, const int height,
const Led * const led)
{
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);
{
Wt::WPen pen = painter.pen();
pen.setWidth(pen_width);
pen.setColor(Wt::WColor(0,0,0));
painter.setPen(pen);
}
painter.setBrush(Wt::WBrush(Wt::WColor(r,g,b)));
painter.drawEllipse(
left + pen_width,
top + pen_width,
width - (2 * pen_width),
height - (2 * 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 = (width / 2) - (0.707 * static_cast<double>(width ) * 0.5);
const int y = (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);
{
Wt::WPen pen = painter.pen();
pen.setWidth(1);
pen.setColor(Wt::WColor(r,g,b));
painter.setPen(pen);
}
painter.setBrush(Wt::WBrush(Wt::WColor(r,g,b)));
painter.drawEllipse(left + x,top + y,w,h);
}
{
//Draw bottomright smaller lighter 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 = (width / 2) - 1;
const int y = (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);
{
Wt::WPen pen = painter.pen();
pen.setWidth(1);
pen.setColor(Wt::WColor(r,g,b));
painter.setPen(pen);
}
painter.setBrush(Wt::WBrush(Wt::WColor(r,g,b)));
painter.drawEllipse(left + x,top + y,w,h);
}
}
void ribi::WtLedWidget::DrawLed(
Wt::WPainter& painter,
const LedWidget * const widget)
{
DrawLed(
painter,
Geometry().GetLeft(widget->GetGeometry()),
Geometry().GetTop(widget->GetGeometry()),
Geometry().GetWidth(widget->GetGeometry()),
Geometry().GetHeight(widget->GetGeometry()),
widget->GetLed()
);
}
std::string ribi::WtLedWidget::GetVersion()
{
return "1.1";
}
std::vector<std::string> ribi::WtLedWidget::GetVersionHistory()
{
return {
"2011-01-06: version 1.0: initial version",
"2014-04-23: version 1.1: use of Boost.Geometry its rectangle",
};
}
void ribi::WtLedWidget::OnResize()
{
resize(
Geometry().GetWidth(m_widget->GetGeometry()),
Geometry().GetHeight(m_widget->GetGeometry())
);
}
void ribi::WtLedWidget::paintEvent(Wt::WPaintDevice *paintDevice)
{
Wt::WPainter painter(paintDevice);
DrawLed(painter,m_widget.get());
}
void ribi::WtLedWidget::resize(const Wt::WLength& width, const Wt::WLength& height)
{
Wt::WPaintedWidget::resize(width,height);
}
|
