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#include <stdio.h>

#include "nano-X.h"

void draw(GR_EVENT * e)

{

  GR_GC_ID      gc;

  GR_POINT      points[4];

  int x = 10;

  int y = 10;

  int sz = 20;

  int sz2 = 5;

  gc = GrNewGC();

  GrSetGCBackground(gc, GR_RGB(0,0,0));

  //GrSetGCMode(gc, GR_MODE_XOR);

  points[0].x = x;

  points[0].y = y;

  points[1].x = x + sz;

  points[1].y = y;

  points[2].x = x + (sz/2) ;

  points[2].y = y + sz;

  GrSetGCForeground(gc, GR_RGB(255,255,255));

  GrFillPoly(((GR_EVENT_EXPOSURE*)e)->wid,gc,3,points);

  points[3].x = x;

  points[3].y = y;

  GrSetGCForeground(gc,GR_RGB(0,255,0));

  GrPoly(((GR_EVENT_EXPOSURE*)e)->wid,gc,4,points);

  y += sz + 10;

  points[0].x = x;

  points[0].y = y;

  points[1].x = x + sz + 1;

  points[1].y = y;

  points[2].x = x + (sz/2) ;

  points[2].y = y + sz;

  GrSetGCForeground(gc, GR_RGB(255,255,255));

  GrFillPoly(((GR_EVENT_EXPOSURE*)e)->wid,gc,3,points);

  points[3].x = x;

  points[3].y = y;

  GrSetGCForeground(gc,GR_RGB(0,255,0));

  GrPoly(((GR_EVENT_EXPOSURE*)e)->wid,gc,4,points);

  y += sz + 10;

  points[0].x = x;

  points[0].y = y;

  points[1].x = x + sz - 1;

  points[1].y = y;

  points[2].x = x + (sz/2) ;

  points[2].y = y + sz;

  GrSetGCForeground(gc, GR_RGB(255,255,255));

  GrFillPoly(((GR_EVENT_EXPOSURE*)e)->wid,gc,3,points);

  points[3].x = x;

  points[3].y = y;

  GrSetGCForeground(gc,GR_RGB(0,255,0));

  GrPoly(((GR_EVENT_EXPOSURE*)e)->wid,gc,4,points);

  /* draw right arrow*/

  sz = 10;

  sz2 = 8;

  x = 60;

  y = 60;

  points[0].x = x;

  points[0].y = y;

  y -= sz;

  points[1].x = x + sz2;

  points[1].y = y;

  y -= sz;

  points[2].x = x;

  points[2].y = y;

  GrSetGCForeground(gc, GR_RGB(255,255,255));

  GrFillPoly(((GR_EVENT_EXPOSURE*)e)->wid,gc,3,points);

  points[3].x = x;

  points[3].y = 60;

  GrSetGCForeground(gc,GR_RGB(0,255,0));

  GrPoly(((GR_EVENT_EXPOSURE*)e)->wid,gc,4,points);

  GrSetGCForeground(gc,GR_RGB(255,255,255));

  x = 60;

  y = 90;

  points[0].x = x;

  points[0].y = y;

  y -= sz;

  points[1].x = x + sz2;

  points[1].y = y;

  y -= sz;

  points[2].x = x;

  points[2].y = y;

  GrSetGCForeground(gc, GR_RGB(255,255,255));

  GrFillPoly(((GR_EVENT_EXPOSURE*)e)->wid,gc,3,points);

  points[3].x = x;

  points[3].y = 90;

  //GrPoly(((GR_EVENT_EXPOSURE*)e)->wid,gc,4,points);

  GrDestroyGC(gc);

}

main()

{

  GR_EVENT      event;

  GR_WINDOW_ID  w;

  if (GrOpen() < 0) {

    fprintf(stderr, "cannot open graphics\n");

    exit(1);

  }

  /* create window*/

  w = GrNewWindowEx(

                     GR_WM_PROPS_NOAUTOMOVE|GR_WM_PROPS_BORDER|GR_WM_PROPS_CAPTION|

                     GR_WM_PROPS_CLOSEBOX, "POLY FILL", GR_ROOT_WINDOW_ID,

                     10, 10, 100, 300, GR_RGB(0,0,0));

  //  w = GrNewWindow(0,100,100,100,100,3,GR_RGB(0,0,255),GR_RGB(0,0,0));

  GrSelectEvents(w, GR_EVENT_MASK_EXPOSURE | GR_EVENT_MASK_CLOSE_REQ);

  GrMapWindow(w);

  while (1) {

    GrGetNextEvent(&event);

    switch (event.type) {

    case GR_EVENT_TYPE_EXPOSURE:

      draw(&event);

      break;

    case GR_EVENT_TYPE_CLOSE_REQ:

      GrClose();

      exit(0);

    }

  }

}