(C++) WtShapeGroupWidget

 

 

WtShapeGroupWidget is a Wt widget class to display an ShapeGroupWidget.

Technical facts

 

 

 

 

 

 

./CppWtShapeGroupWidget/CppWtShapeGroupWidget.pri

 

---

INCLUDEPATH += \     ../../Classes/CppWtShapeGroupWidget SOURCES += \     ../../Classes/CppWtShapeGroupWidget/wtshapegroupwidget.cpp HEADERS  += \     ../../Classes/CppWtShapeGroupWidget/wtshapegroupwidget.h OTHER_FILES += \     ../../Classes/CppWtShapeGroupWidget/Licence.txt

 

 

 

 

 

./CppWtShapeGroupWidget/wtshapegroupwidget.h

 

---

//--------------------------------------------------------------------------- /* WtShapeGroupWidget, Wt widget for displaying Shapes Copyright 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/CppWtShapeGroupWidget.htm //--------------------------------------------------------------------------- #ifndef WTSHAPEGROUPWIDGET_H #define WTSHAPEGROUPWIDGET_H #include <string> #include <vector> #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 <Wt/WPaintDevice> #include <Wt/WPaintedWidget> #pragma GCC diagnostic pop namespace ribi { struct Shape; ///WtShapeGroupWidget displays a collection of Shape instances struct WtShapeGroupWidget : public Wt::WPaintedWidget {   WtShapeGroupWidget();   void SetShapes(const std::vector<std::vector<const Shape*> >& v);   static std::string GetVersion();   static std::vector<std::string> GetVersionHistory();   protected:   void paintEvent(Wt::WPaintDevice *paintDevice);   private:   void DoRepaint();   std::vector<std::vector<const Shape *> > m_v;   static void Rainbow(const double x,double& r,double& g,double& b); }; } //~namespace ribi #endif // WTGROUPWIDGET_H

 

 

 

 

 

./CppWtShapeGroupWidget/wtshapegroupwidget.cpp

 

---

//--------------------------------------------------------------------------- /* WtShapeGroupWidget, Wt widget for displaying Shapes Copyright 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/CppWtShapeGroupWidget.htm //--------------------------------------------------------------------------- #include <algorithm> #include <iostream> #include <numeric> #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/numeric/conversion/bounds.hpp> //#include <boost/bind.hpp> //#include <boost/lambda/bind.hpp> #include <boost/numeric/conversion/cast.hpp> #include <boost/math/constants/constants.hpp> #include <Wt/WBrush> #include <Wt/WEvent> #include <Wt/WPaintDevice> #include <Wt/WPainter> #include <Wt/WPen> #include "shape.h" #include "wtgroupwidget.h" #include "wtshapegroupwidget.h" #include "wtshapewidget.h" #pragma GCC diagnostic pop ribi::WtShapeGroupWidget::WtShapeGroupWidget()   : m_v{} {   this->resize(100,100); } void ribi::WtShapeGroupWidget::DoRepaint() {   this->update(); } std::string ribi::WtShapeGroupWidget::GetVersion() {   return "1.0"; } std::vector<std::string> ribi::WtShapeGroupWidget::GetVersionHistory() {   return {     "2011-08-25: version 1.0: initial version"   }; } void ribi::WtShapeGroupWidget::paintEvent(Wt::WPaintDevice *paintDevice) {   Wt::WPainter painter(paintDevice);   const int width  = this->width().toPixels();   const int height = this->height().toPixels();   //Draw a background rectangle   {     Wt::WPen pen = painter.pen();     pen.setColor(Wt::WColor(1,1,1));     painter.setPen(pen);     painter.setBrush(Wt::WBrush(Wt::WColor(254,254,254)));     painter.drawRect(0.0,0.0,width,height);   }   if (m_v.empty()) return;   const double mid_x = 0.5 * boost::numeric_cast<double>(width);   const double mid_y = 0.5 * boost::numeric_cast<double>(height);   const double ray_center = std::min(mid_x,mid_y);   const double ray_group  = 0.33 * ray_center;   const double ray_member = 0.33 * ray_group;   const int n_groups = boost::numeric_cast<double>(m_v.size());   for (int group=0; group!=n_groups; ++group)   {     //Draw the larger (group) circles first     //Set the pen to black     {       Wt::WPen pen = painter.pen();       pen.setColor(Wt::WColor(1,1,1));       painter.setPen(pen);     }     const double f_group      = (n_groups != 0      ? static_cast<double>(group) / static_cast<double>(n_groups)      : 1.0);     //Set the brush to the group's index     {       double r,g,b;       Rainbow(f_group,r,g,b);       painter.setBrush(Wt::WBrush(Wt::WColor(r*255.0,g*255.0,b*255.0)));     }     const double angle = 2.0 * boost::math::constants::pi<double>() * f_group;     const double group_mid_x = mid_x + (std::sin(angle) * 0.66 * ray_center);     const double group_mid_y = mid_y - (std::cos(angle) * 0.66 * ray_center);     //Draw the group ellipse     painter.drawEllipse(       group_mid_x - ray_group,       group_mid_y - ray_group,       2.0 * ray_group,       2.0 * ray_group);     const std::vector<const Shape*>& members = m_v[group];     const int n_members = boost::numeric_cast<int>(members.size());     for (int member=0; member!=n_members;++member)     {       const double f_member        = (n_members != 0        ? static_cast<double>(member) / static_cast<double>(n_members)        :  1.0);       const double angle = 2.0 * boost::math::constants::pi<double>() * f_member;       const double member_mid_x = group_mid_x + (std::sin(angle) * 0.66 * ray_group);       const double member_mid_y = group_mid_y - (std::cos(angle) * 0.66 * ray_group);       //Draw the member his/her Shape ellipse       WtShapeWidget::DrawShape(painter,         member_mid_x - ray_member,         member_mid_y - ray_member,         2.0 * ray_member,         2.0 * ray_member,         members[member]);     }   } } //From http://www.richelbilderbeek.nl/CppRainbow.htm void ribi::WtShapeGroupWidget::Rainbow(   const double x,   double& r,   double& g,   double& b) {   const double f_r = std::max(0.0,     (x < 0.5     ? std::cos(x * 1.5 * boost::math::constants::pi<double>())     : -std::sin(x * 1.5 * boost::math::constants::pi<double>())     ) );   const double f_g = std::max(0.0, std::sin( x * 1.5 * boost::math::constants::pi<double>() ) );   const double f_b = std::max(0.0, -std::cos( x * 1.5 * boost::math::constants::pi<double>() ) );   const double max = std::max(f_r, std::max(f_g,f_b));   assert(max!=0);   r = f_r / max;   g = f_g / max;   b = f_b / max; } void ribi::WtShapeGroupWidget::SetShapes(const std::vector<std::vector<const Shape*> >& v) {   m_v = v;   update(); }