text: /*
  ** Demo program for mouse usage.
  ** Supports the C64/C128/CBM510/Atari/Apple2.
  **
  ** 2001-09-13, Ullrich von Bassewitz
  ** 2013-09-05, Greg King
  **
  */
  
  
  
  #include <stdbool.h>
  #include <stdlib.h>
  #include <string.h>
  #include <mouse.h>
  #include <pen.h>
  #include <conio.h>
  #include <ctype.h>
  #include <dbg.h>
  #include <cc65.h>
  
  #define max(a,b)  (((a) > (b)) ? (a) : (b))
  #define min(a,b)  (((a) < (b)) ? (a) : (b))
  
  
  
  #ifdef MOUSE_DRIVER
  
  /* A statically linked driver was named on the compiler's command line.
  ** Make sure that it is used instead of a dynamic one.
  */
  #  undef DYN_DRV
  #  define DYN_DRV       0
  #else
  
  /* Use a dynamically loaded driver, by default. */
  #  ifndef DYN_DRV
  #    define DYN_DRV     1
  #  endif
  #endif
  
  
  
  #ifdef __CBM__
  
  /* Set dark-on-light colors. */
  const unsigned char mouse_def_pointercolor = COLOR_BLACK;
  
  #endif
  
  
  
  static void __fastcall__ CheckError (const char* S, unsigned char Error)
  {
      if (Error != MOUSE_ERR_OK) {
          cprintf ("\n%s: %s(%u)\r\n", S, mouse_geterrormsg (Error), Error);
  
          /* Wait for a key-press, so that some platforms can show the error
          ** message before they remove the current screen.
          */
          if (doesclrscrafterexit ()) {
              cgetc ();
          }
          exit (EXIT_FAILURE);
      }
  }
  
  
  
  #if DYN_DRV
  
  /* Points to the dynamic driver's name. */
  static const char *mouse_name;
  
  
  
  static void DoWarning (void)
  /* Warn the user that a driver is needed for this program. */
  {
      cprintf ("Warning: This program needs\r\n"
               "the driver with the name\r\n"
               "    %s\r\n"
               "on a disk! Press 'y' if you have it;\r\n"
               "or, any other key to exit.\r\n", mouse_stddrv);
      if (tolower (cgetc ()) != 'y') {
          exit (EXIT_SUCCESS);
      }
      cprintf ("OK. Please wait patiently...\r\n");
  }
  #endif
  
  
  
  static void __fastcall__ ShowState (unsigned char Jailed, unsigned char Invisible)
  /* Display jail and cursor states. */
  {
      cclearxy (0, 7, 32);
      gotoxy (0, 7);
      cprintf ("Pointer is %svisible%s.", Invisible? "in" : "", Jailed? " and jailed" : "");
  }
  
  
  
  #if DYN_DRV
  int main (int argc, char *argv[])
  #else
  int main (void)
  #endif
  {
      struct mouse_info info;
      struct mouse_box full_box, small_box;
      unsigned char width, height;
      char C;
      bool Invisible = true, Done = false, Jailed = false;
  
      /* Initialize the debugger */
      DbgInit (0);
  
      /* Set dark-on-light colors.  Clear the screen. */
  #ifdef __CBM__
      (void) bordercolor (COLOR_GRAY2);
      (void) bgcolor (COLOR_WHITE);
      (void) textcolor (COLOR_GRAY1);
  #else
      (void) bordercolor (COLOR_BLUE);
      (void) bgcolor (COLOR_WHITE);
      (void) textcolor (COLOR_BLACK);
  #endif
      cursor (0);
      clrscr ();
  
      /* If a lightpen driver is installed, then it can get a calibration value
      ** from this file (if it exists).  Or, the user can adjust the pen; and,
      ** the value will be put into this file, for the next time.
      ** (Other drivers will ignore this.)
      */
  #if defined(__C64__) || defined(__C128__) || defined(__CBM510__)
      pen_adjust ("pen.dat");
  #endif
  
  #if DYN_DRV
      /* If a dynamically loadable driver is named on the command line,
      ** then use that driver instead of the standard one.
      */
      if (argc > 1) {
          mouse_name = argv[1];
      } else {
          /* Output a warning about the standard driver that is needed. */
          DoWarning ();
          mouse_name = mouse_stddrv;
      }
  
      /* Load and install the driver. */
      CheckError ("mouse_load_driver",
                  mouse_load_driver (&mouse_def_callbacks, mouse_name));
  #else
      /* Install the driver. */
      CheckError ("mouse_install",
                  mouse_install (&mouse_def_callbacks,
  #  ifdef MOUSE_DRIVER
                                 MOUSE_DRIVER
  #  else
                                 mouse_static_stddrv
  #  endif
                                 ));
  #endif
  
      /* Get the initial bounding box. */
      mouse_getbox (&full_box);
  
      screensize (&width, &height);
  
  top:
      clrscr ();
  
      /* Print a help line */
      cputs (" d)ebug  h)ide   q)uit   s)how   j)ail");
  
      /* Put a cross at the center of the screen. */
      gotoxy (width / 2 - 3, height / 2 - 1);
  #if defined(__CBM__)
      cprintf ("%3u,%3u\r\n%*s\xDB", width / 2 * 8 + 4, height / 2 * 8 + 4,
               width / 2, "");
  #else
      cprintf ("%3u,%3u\r\n%*s+", width / 2 * 8 + 4, height / 2 * 8 + 4,
               width / 2, "");
  #endif
  
      /* Test loop */
      ShowState (Jailed, Invisible);
      do {
          /* Get the current co-ordinates and button states; and, print them. */
          mouse_info (&info);
          gotoxy (0, 2);
          cprintf (" X  = %3d\r\n", info.pos.x);
          cprintf (" Y  = %3d\r\n", info.pos.y);
          cprintf (" B1 = %c\r\n", (info.buttons & MOUSE_BTN_LEFT) ?
  #ifdef __CBM__
                   0x5F
  #else
                   'v'
  #endif
                   : '^');
          cprintf (" B2 = %c", (info.buttons & MOUSE_BTN_RIGHT) ?
  #ifdef __CBM__
                   0x5F
  #else
                   'v'
  #endif
                   : '^');
  
          /* Handle user input */
          if (kbhit ()) {
              cclearxy (1, 9, 23);
              switch (tolower (C = cgetc ())) {
                  case 'd':
                      BREAK();
  
                      /* The debugger might have changed the colors.
                      ** Restore them.
                      */
  #ifdef __CBM__
                      (void) bordercolor (COLOR_GRAY2);
                      (void) bgcolor (COLOR_WHITE);
                      (void) textcolor (COLOR_GRAY1);
  #else
                      (void) bordercolor (COLOR_BLUE);
                      (void) bgcolor (COLOR_WHITE);
                      (void) textcolor (COLOR_BLACK);
  #endif
  
                      /* The debugger changed the screen; restore it. */
                      goto top;
  
                  case 'h':
                      mouse_hide ();
                      ShowState (Jailed, ++Invisible);
                      break;
  
                  case 'j':
                      if (Jailed) {
                          mouse_setbox (&full_box);
                          Jailed = false;
                      } else {
                          small_box.minx = max (info.pos.x - 10, full_box.minx);
                          small_box.miny = max (info.pos.y - 10, full_box.miny);
                          small_box.maxx = min (info.pos.x + 10, full_box.maxx);
                          small_box.maxy = min (info.pos.y + 10, full_box.maxy);
                          mouse_setbox (&small_box);
                          Jailed = true;
                      }
                      ShowState (Jailed, Invisible);
                      break;
  
                  case 's':
                      mouse_show ();
                      if (Invisible) {
                          ShowState (Jailed, --Invisible);
                      }
                      break;
  
                  case 'q':
                      Done = true;
                      break;
  
                  default:
                      gotoxy (1, 9);
                      cprintf ("Spurious character: $%02X", C);
              }
          }
      } while (!Done);
  
  #if DYN_DRV
      /* Uninstall and unload the driver. */
      CheckError ("mouse_unload", mouse_unload ());
  #else
      /* Uninstall the static driver. */
      CheckError ("mouse_uninstall", mouse_uninstall ());
  #endif
  
      /* Say goodbye */
      cputsxy (0, height / 2 + 3, "Goodbye!");
      return EXIT_SUCCESS;
  }
  