screenhack.c

编译后直接运行的ＭＰ３播放器全部Ｃ语言源代码 一个包含FAT文件系统、系统引导 Boot、FLASH Driver等内容的

/* xscreensaver, Copyright (c) 1992, 1995, 1997, 1998
 *  Jamie Zawinski <[e-mail]>
 *
 * Permission to use, copy, modify, distribute, and sell this software and its
 * documentation for any purpose is hereby granted without fee, provided that
 * the above copyright notice appear in all copies and that both that
 * copyright notice and this permission notice appear in supporting
 * documentation.  No representations are made about the suitability of this
 * software for any purpose.  It is provided "as is" without express or 
 * implied warranty.
 *
 * And remember: X Windows is to graphics hacking as roman numerals are to
 * the square root of pi.
 */

/* This file contains simple code to open a window or draw on the root.
   The idea being that, when writing a graphics hack, you can just link
   with this .o to get all of the uninteresting junk out of the way.

   -  create a procedure `screenhack(dpy, window)'

   -  create a variable `char *progclass' which names this program's
      resource class.

   -  create a variable `char defaults []' for the default resources, and
      null-terminate it.

   -  create a variable `XrmOptionDescRec options[]' for the command-line,
      and null-terminate it.

   And that's it...
 */

#include <stdio.h>
#include <X11/Intrinsic.h>
#include <X11/IntrinsicP.h>
#include <X11/CoreP.h>
#include <X11/Shell.h>
#include <X11/StringDefs.h>
#include <X11/Xutil.h>
#include <X11/keysym.h>

#ifdef __sgi
# include <X11/SGIScheme.h>	/* for SgiUseSchemes() */
#endif /* __sgi */

#ifdef HAVE_XMU
# ifndef VMS
#  include <X11/Xmu/Error.h>
# else /* VMS */
#  include <Xmu/Error.h>
# endif
#else
# include "xmu.h"
#endif
#include "screenhack.h"
#include "version.h"
#include "vroot.h"

#include "debug.h"

#ifndef isupper
# define isupper(c)  ((c) >= 'A' && (c) <= 'Z')
#endif
#ifndef _tolower
# define _tolower(c)  ((c) - 'A' + 'a')
#endif

#define KEYBOARD_GENERIC \
  "Keyboard   Rockbox\n" \
  "--------   --------------\n" \
  "+          ON\n" \
  "8          UP\n" \
  "2          DOWN\n" \
  "4          LEFT\n" \

#ifdef HAVE_LCD_BITMAP
#define KEYBOARD_SPECIFIC  \
  "6          RIGHT\n" \
  "Enter      OFF\n" \
  "5          PLAY\n" \
  "/          F1\n" \
  "*          F2\n" \
  "-          F3\n"
#else 
#define KEYBOARD_SPECIFIC  \
  "6          RIGHT/PLAY  (there's no separation between PLAY and RIGHT)\n" \
  "Enter      MENU\n"
#endif    




char having_new_lcd=True;

char *progname;
XrmDatabase db;
XtAppContext app;
Bool mono_p;

static XrmOptionDescRec default_options [] = {
  { "-root",	".root",		XrmoptionNoArg, "True" },
  { "-window",	".root",		XrmoptionNoArg, "False" },
  { "-mono",	".mono",		XrmoptionNoArg, "True" },
  { "-install",	".installColormap",	XrmoptionNoArg, "True" },
  { "-noinstall",".installColormap",	XrmoptionNoArg, "False" },
  { "-visual",	".visualID",		XrmoptionSepArg, 0 },
  { "-window-id", ".windowID",		XrmoptionSepArg, 0 },
  { 0, 0, 0, 0 }
};

static char *default_defaults[] = {
  ".root:		false",
#define GEOMETRY_POSITION 1
  "*geometry:		"
#ifdef HAVE_LCD_BITMAP
  "120x68"
#else
  "280x132" /* A bit larger that necessary */
#endif
  , /* this should be .geometry, but nooooo... */
  "*mono:		false",
  "*installColormap:	false",
  "*visualID:		default",
  "*windowID:		",
  0
};

extern Display* dpy;
extern int display_zoom;

static XrmOptionDescRec *merged_options;
static int merged_options_size;
static char **merged_defaults;

static void merge_options (void)
{
    int def_opts_size, opts_size;
    int def_defaults_size, defaults_size;

    for (def_opts_size = 0; default_options[def_opts_size].option;
         def_opts_size++)
        ;
    for (opts_size = 0; options[opts_size].option; opts_size++)
        ;

    merged_options_size = def_opts_size + opts_size;
    merged_options = (XrmOptionDescRec *)
        malloc ((merged_options_size + 1) * sizeof(*default_options));
    memcpy (merged_options, default_options,
            (def_opts_size * sizeof(*default_options)));
    memcpy (merged_options + def_opts_size, options,
            ((opts_size + 1) * sizeof(*default_options)));

    for (def_defaults_size = 0; default_defaults[def_defaults_size];
         def_defaults_size++)
        ;
    for (defaults_size = 0; defaults[defaults_size]; defaults_size++)
        ;

    merged_defaults = (char **)
        malloc ((def_defaults_size + defaults_size + 1) * sizeof (*defaults));

    memcpy (merged_defaults, default_defaults,
            def_defaults_size * sizeof(*defaults));
    memcpy (merged_defaults + def_defaults_size, defaults,
            (defaults_size + 1) * sizeof(*defaults));

    /* This totally sucks.  Xt should behave like this by default.
       If the string in `defaults' looks like ".foo", change that
       to "Progclass.foo".
    */
    {
        char **s;
        for (s = merged_defaults; *s; s++)
            if (**s == '.')
            {
                const char *oldr = *s;
                char *newr = (char *) malloc(strlen(oldr) 
                                             + strlen(progclass) + 3);
                strcpy (newr, progclass);
                strcat (newr, oldr);
                *s = newr;
            }
    }
}


/* Make the X errors print out the name of this program, so we have some
   clue which one has a bug when they die under the screensaver.
 */

static int screenhack_ehandler (Display *dpy, XErrorEvent *error)
{
    fprintf (stderr, "\nX error in %s:\n", progname);
    if (XmuPrintDefaultErrorMessage (dpy, error, stderr))
        exit (-1);
    else
        fprintf (stderr, " (nonfatal.)\n");
    return 0;
}

static Bool MapNotify_event_p (Display *dpy, XEvent *event, XPointer window)
{
    (void)dpy;
    return (event->xany.type == MapNotify &&
            event->xvisibility.window == (Window) window);
}

static Atom XA_WM_PROTOCOLS, XA_WM_DELETE_WINDOW;

static Bool checkrepeat(time_t prev,
                       time_t now)
{
    if(now-prev < 50) {
        DEBUGF("Consider this a button repeat\n");
        return true;
    }
    return false;
}

/* Dead-trivial event handling.
   Exit if the WM_PROTOCOLS WM_DELETE_WINDOW ClientMessage is received.
 */
int screenhack_handle_event(Display *dpy, XEvent *event,
                            bool *release, bool *repeat)
{
    int key=0;
    static time_t lasttime;
    static unsigned int lastkeycode;

    *release = FALSE;
    *repeat = false;

    switch (event->xany.type) {
    case KeyPress:
      {
          KeySym keysym;
          unsigned char c = 0;
          XLookupString (&event->xkey, &c, 1, &keysym, 0);
          key = keysym;
#if 0
          DEBUGF("Got keypress: %02x %x, time %lx\n", c,
                 event->xkey.keycode,
                 event->xkey.time);
#endif
          if(lastkeycode == event->xkey.keycode)
              *repeat = checkrepeat(lasttime, event->xkey.time);
          lasttime = event->xkey.time;
          lastkeycode = event->xkey.keycode;
      }
      break;
    case KeyRelease:
      {
          KeySym keysym;
          unsigned char c = 0;
          XLookupString (&event->xkey, &c, 1, &keysym, 0);
          key = keysym;
#if 0
          DEBUGF("Got keyrelease: %c (%02x) %x\n", c, c,
                 event->xkey.keycode);
#endif
          if(lastkeycode == event->xkey.keycode)
              *repeat = checkrepeat(lasttime, event->xkey.time);          
          lasttime = event->xkey.time;
          lastkeycode = event->xkey.keycode;
          if(*repeat)
              return 0; /* on repeats, return nothing on release */
              
          *release = TRUE;
      }
      break;
    case Expose:
      {
	screen_redraw();
      }