// basic Qt drawing template - student defines drawMyPicture function

#include <qapplication.h>   
#include <qwidget.h>
#include <qpainter.h>
#include <qprinter.h>
#include <qpixmap.h>
#include <qmenubar.h>
#include <qpopupmenu.h>

#define XBOUND 400
#define YBOUND 400

class mywindow : public QWidget     /* a template for a type of window */
{
Q_OBJECT

private:

  QPainter * brush;       /* an object that can do some graphics */
  QPainter * pbrush;   // printing
  QPrinter printer;
  QPixmap * buffer;
  int proceed;
  QMenuBar *menu;
  QPopupMenu *printop;

  void drawMyPicture();  // to be defined by student

  /* a function that Qt expects to be defined */
  void paintEvent(QPaintEvent *)   
  {  
    brush->begin(this);      // prepares the brush

    drawMyPicture();
    brush->flush();
    bitBlt(buffer,0,0,this,0,0,XBOUND,YBOUND);
    brush->end();            // stops the "brush" session
  }


public slots:

void printpic()
    {
  proceed = printer.setup();
    if (proceed) 
      {
      //      pbrush->setPen(red);  pbrush->drawEllipse(10,20,100,100); 
      pbrush->begin(&printer);
      pbrush->drawPixmap(0,0,*buffer);
      pbrush->end();
      }

    }

public:

  mywindow()      /* constructor for the window template */                 
  {  
    setGeometry(200, 100, XBOUND, YBOUND);  /* set position and size of program */
    brush = new QPainter;    // creates the brush object
    pbrush = new QPainter;
    buffer = new QPixmap(XBOUND,YBOUND);
    menu = new QMenuBar(this);
    printop = new QPopupMenu();
    printop->insertItem("Print Pict", this, SLOT(printpic()));
    printop->insertItem("quit", qApp, SLOT(quit()));
    menu->insertItem("file",printop);
  }

};


int main(int argc, char **argv)   // main is entry point of entire program
{ 
  QApplication theprogram(argc, argv);   // but the real program is a Qt one
  mywindow thewindow;                    // that uses a window!
  theprogram.setMainWidget(&thewindow);  // sets the main window
  thewindow.show();                      // shows and executes the Qt app.
  theprogram.exec();
  
  return 0;                              // exits gracefully
}

#include "drawing.moc"