//---------------------------------------------------------------------------
/*
WtDialWidget, Wt widget for displaying the Dial class
Copyright (C) 2011 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/CppWtDialWidget.htm
//---------------------------------------------------------------------------
#include <boost/bind.hpp>
#include <boost/numeric/conversion/cast.hpp>
//---------------------------------------------------------------------------
#include <Wt/WBrush>
#include <Wt/WEvent>
#include <Wt/WPainter>
#include <Wt/WPen>
//---------------------------------------------------------------------------
#include "dial.h"
#include "dialwidget.h"
#include "wtdialwidget.h"
//---------------------------------------------------------------------------
WtDialWidget::WtDialWidget(
const double intensity,
const unsigned char red,
const unsigned char green,
const unsigned char blue)
: m_widget(new DialWidget(intensity,red,green,blue))
{
assert(m_widget);
m_widget->GetDial()->m_signal_color_changed.connect(
boost::bind(
&WtDialWidget::DoRepaint,
this));
m_widget->GetDial()->m_signal_position_changed.connect(
boost::bind(
&WtDialWidget::DoRepaint,
this));
m_widget->m_signal_geometry_changed.connect(
boost::bind(
&WtDialWidget::OnResize,
this));
this->clicked().connect(this,&WtDialWidget::OnClicked);
m_widget->SetGeometry(Rect(0,0,32,32));
}
//---------------------------------------------------------------------------
void WtDialWidget::DoRepaint()
{
this->update();
}
//---------------------------------------------------------------------------
void WtDialWidget::DrawDial(
Wt::WPainter& painter,
const int left, const int top,
const int width, const int height,
const Dial * const dial)
{
const double position = dial->GetPosition();
//Draw knob
{
Wt::WPen pen = painter.pen();
pen.setWidth(1);
pen.setColor(Wt::WColor(0,0,0));
painter.setPen(pen);
}
painter.setBrush(Wt::WColor(
dial->GetRed(),
dial->GetGreen(),
dial->GetBlue()));
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 = static_cast<double>(std::min( midx, midy ));
const double angle = position * 2.0 * M_PI;
const int pointerX
= static_cast<int>( static_cast<double>(midx) + (std::sin(angle) * ray) );
const int pointerY
= static_cast<int>( static_cast<double>(midy) - (std::cos(angle) * ray) );
{
Wt::WPen pen = painter.pen();
pen.setWidth(4);
painter.setPen(pen);
}
painter.drawLine(left+midx,top+midy,left+pointerX,top+pointerY);
}
//---------------------------------------------------------------------------
void WtDialWidget::DrawDial(
Wt::WPainter& painter,
const DialWidget * const widget)
{
DrawDial(
painter,
widget->GetGeometry().GetX(),
widget->GetGeometry().GetY(),
widget->GetGeometry().GetWidth(),
widget->GetGeometry().GetHeight(),
widget->GetDial());
}
//---------------------------------------------------------------------------
const std::string WtDialWidget::GetVersion()
{
return "3.1";
}
//---------------------------------------------------------------------------
const std::vector<std::string> WtDialWidget::GetVersionHistory()
{
std::vector<std::string> v;
v.push_back("YYYY-MM-DD: version X.Y: [description]");
v.push_back("2011-04-10: version 1.0: initial version");
v.push_back("2011-04-11: version 1.1: fixed #include guard, fixed initial date, made default dial white");
v.push_back("2011-07-03: version 2.0: moved Dial its user interface logic to new class DialWidget");
v.push_back("2011-08-07: Version 3.0: conformized architure for MysteryMachine");
v.push_back("2011-08-31: Version 3.1: allow changing the dial its color");
return v;
}
//---------------------------------------------------------------------------
void WtDialWidget::OnClicked(const Wt::WMouseEvent& e)
{
m_widget->Click(e.widget().x,e.widget().y);
}
//---------------------------------------------------------------------------
void WtDialWidget::OnResize()
{
resize(m_widget->GetGeometry().GetWidth(),m_widget->GetGeometry().GetHeight());
}
//---------------------------------------------------------------------------
void WtDialWidget::paintEvent(Wt::WPaintDevice *paintDevice)
{
Wt::WPainter painter(paintDevice);
this->DrawDial(painter,m_widget.get());
}
//---------------------------------------------------------------------------
void WtDialWidget::resize(const Wt::WLength& width, const Wt::WLength& height)
{
Wt::WPaintedWidget::resize(width,height);
}
//---------------------------------------------------------------------------
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