//---------------------------------------------------------------------------
/*
QtDialWidget, Qt class for displaying a DialWidget
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/CppQtDialWidget.htm
//---------------------------------------------------------------------------
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Weffc++"
#pragma GCC diagnostic ignored "-Wunused-local-typedefs"
#include "qtdialwidget.h"
#include <cassert>
#include <boost/math/constants/constants.hpp>
#include <boost/numeric/conversion/cast.hpp>
#include <QMouseEvent>
#include <QPainter>
#include "dial.h"
#pragma GCC diagnostic pop
ribi::QtDialWidget::QtDialWidget(QWidget *parent)
: QWidget(parent),
m_widget(new DialWidget)
{
m_widget->GetDial()->m_signal_color_changed.connect(
boost::bind(
&ribi::QtDialWidget::OnDialChanged,
this));
m_widget->GetDial()->m_signal_position_changed.connect(
boost::bind(
&ribi::QtDialWidget::OnDialChanged,
this));
}
void ribi::QtDialWidget::DrawDial(
QPainter& painter,
const boost::shared_ptr<const DialWidget> widget)
{
DrawDial(
painter,
widget->GetLeft(),
widget->GetTop(),
widget->GetWidth(),
widget->GetHeight(),
widget->GetDial()
);
}
void ribi::QtDialWidget::DrawDial(
QPainter& painter,
const int left, const int top,
const int width, const int height,
const Dial * const dial)
{
const QPen initial_pen = painter.pen();
const double position = dial->GetPosition();
const unsigned char red = dial->GetRed();
const unsigned char green = dial->GetGreen();
const unsigned char blue = dial->GetBlue();
//Draw knob
{
QPen pen = painter.pen();
pen.setWidth(1);
pen.setColor(QColor(0,0,0));
painter.setPen(pen);
}
painter.setBrush(QColor(red,green,blue));
painter.drawEllipse(left+1,top+1,width-2,height-2);
//Draw pointer
const int midx = width / 2;
const int midy = height / 2;
const double ray_x = static_cast<double>(midx);
const double ray_y = static_cast<double>(midy);
const double pi = boost::math::constants::pi<double>();
const double angle = position * 2.0 * pi;
const int pointerX
= static_cast<int>( static_cast<double>(midx) + (std::sin(angle) * ray_x) );
const int pointerY
= static_cast<int>( static_cast<double>(midy) - (std::cos(angle) * ray_y) );
{
QPen pen = painter.pen();
pen.setWidth(4);
painter.setPen(pen);
}
painter.drawLine(left+midx,top+midy,left+pointerX,top+pointerY);
painter.setPen(initial_pen);
}
std::string ribi::QtDialWidget::GetVersion() noexcept
{
return "2.2";
}
std::vector<std::string> ribi::QtDialWidget::GetVersionHistory() noexcept
{
return {
"2011-04-11: Version 1.0: initial version",
"2011-06-27: Version 1.1: fixed minor bug in displaying the dial its pointer",
"2011-08-07: Version 2.0: conformized architure for MysteryMachine",
"2011-08-31: Version 2.1: removed bloat, fixed bugs",
"2014-03-28: Version 2.2: replaced custom Rect class by Boost.Geometry"
};
}
void ribi::QtDialWidget::mousePressEvent(QMouseEvent * e)
{
assert(e);
m_widget->Click(e->x(),e->y());
}
void ribi::QtDialWidget::OnDialChanged()
{
this->repaint();
}
void ribi::QtDialWidget::paintEvent(QPaintEvent *)
{
QPainter painter(this);
DrawDial(painter,0,0,width(),height(),this->m_widget->GetDial());
}
void ribi::QtDialWidget::resizeEvent(QResizeEvent *)
{
m_widget->SetGeometry(
0, //x(), //geometry().left(),
0, //y(), //geometry().top(),
width(), //geometry().width(),
height() //geometry().height()
);
}
|
