// rectapp.cpp

#include "pointt.h"

class rect {
  POINTT upper;
  POINTT lower;
public:
  rect(int ux,int uy,int lx,int ly) {upper=POINTT(ux,uy); lower=POINTT(lx,ly);}
  rect(POINTT &u, POINTT &l) { upper=u; lower=l; }
  void moveTo(int ux,int uy, int lx, int ly) {upper=POINTT(ux,uy); lower=POINTT(lx,ly);}
  void moveTo(POINTT &u, POINTT &l) { upper=u; lower=l; }
  int includes(POINTT p) { return ( upper <= p && p <= lower ); }
  int includes(int x,int y) { return includes(POINTT(x,y)); }
  void draw(window *W) {
    W->setPen(blue,solidLine,1);
    W->line(upper.x,upper.y,lower.x,upper.y);
    W->line(lower.x,upper.y,lower.x,lower.y);
    W->line(lower.x,lower.y,upper.x,lower.y);
    W->line(upper.x,lower.y,upper.x,upper.y);
  }
}; // rect

class rectApplication : public application {
public:
  rectApplication(char *apName, char *apTitle, HANDLE thisInst, HANDLE prevInst):
    application(apName, apTitle, thisInst, prevInst){};
  void mouseDown(int,int);
  void paint();
}; // rectApplication

rect *theRectangle = NULL;

void rectApplication::mouseDown(int x,int y)
{
  if ( theRectangle != NULL ) {
    if ( theRectangle->includes(x,y) ) {
      delete theRectangle;
      theRectangle = new rect(x,y,x+50,y+20);
    }
  }
  else
    theRectangle = new rect(x,y,x+50,y+20);

  clearAndUpdate();
}


void rectApplication::paint()
{
  if ( theRectangle != NULL ) theRectangle->draw(this);
}

int PASCAL WinMain(HANDLE thisInst, HANDLE prevInst, LPSTR, int)
{
  rectApplication theApp("PENS","Little Application Framework",thisInst,prevInst);
  return theApp.run();
}