dining_gui.c

C++ SOCKET 类

#include "dining_gui.h"

extern "C" {

#  include <stdlib.h>

};

Dining::Dining(QApplication *a,int nr)
  : QWidget( 0,"guiDiner" ), dining(nr)
{
  int i;

  app = a;
  eating = new _state[nr];
  for( i=0;i<nr;i++ )
    eating[i] = Sleeping;
}

Dining::~Dining()
{
}

void
Dining::paintEvent(QPaintEvent *p_ev)
{
  int i;

  for( i=0;i<dining::nr();i++ ) {
    paintDish( i );
    paintFork( i );
  }
}

void
Dining::showForks(int p_nr)
{
  int lfork,rfork;

  lfork = p_nr-1 >= 0 ? p_nr-1 : nr()-1;
  rfork = lfork+1 >= nr() ? 0 : lfork+1;
  paintFork(lfork);
  paintFork(rfork);
}

bool
Dining::get_forks(int p_no)
{
  bool rv;

  rv = dining::get_forks(p_no);
  eating[p_no] = ( rv ? Eating : Looking );
  paintDish(p_no);
  showForks(p_no);
  return rv;
}

void
Dining::put_forks(int p_nr)
{
  dining::put_forks(p_nr);
  eating[p_nr] = Sleeping;
  paintDish(p_nr);
  showForks(p_nr);
}

void
Dining::finished(int p_nr)
{
  eating[p_nr] = Gone;
  dining::finished(p_nr);
  paintDish(p_nr);
  showForks(p_nr);
}

void
Dining::getvalues(int no,double& degr,int& w,int& h, int& nr)
{
  nr   = dining::nr();
  h    = height()/nr;
  w    = width()/nr;
  degr = 360/nr;
}

void
Dining::paintDish(int p_no)
{
  QPainter p;
  double degrees;
  int w,h,nr,r;

  getvalues(p_no,degrees,w,h,nr);
  r = ( h>w ? w:h );
  gui_access.lock();
  p.begin( this );
  p.translate( width()/2,height()/2 );
  p.rotate( (degrees*p_no)+(degrees/w*r) );
  switch( eating[p_no] ) {
  case Eating:
    p.setPen( black );
    break;
  case Sleeping:
    p.setPen( yellow );
    break;
  case Looking:
    p.setPen( blue );
    break;
  default:
    p.setPen( colorGroup().color(QColorGroup::Background) );
  }
  p.drawArc(r,r,r,r,0,360*16);
  p.end();
  gui_access.unlock();
}

void
Dining::paintFork(int p_no)
{
  QPainter p;
  double degrees;
  int w,h,nr,r;

  getvalues(p_no,degrees,w,h,nr);
  r = ( h>w ? w:h );
  gui_access.lock();
  p.begin( this );
  p.translate( width()/2,height()/2 );
  p.rotate( (degrees*p_no)+(degrees/2) );
  if ( dining::isLocked(p_no) )
    p.eraseRect(0,3*h/2,5,h);
  else
    p.drawRect(0,3*h/2,5,h);
  p.end();
  if ( app )
    app->wakeUpGuiThread();
  gui_access.unlock();
}