-/* xscreensaver, Copyright (c) 1999, 2000 Jamie Zawinski <jwz@jwz.org>
+/* xscreensaver, Copyright (c) 1999-2008 Jamie Zawinski <jwz@jwz.org>
*
* Permission to use, copy, modify, distribute, and sell this software and its
* documentation for any purpose is hereby granted without fee, provided that
* implied warranty.
*
* Phosphor -- simulate a glass tty with long-sustain phosphor.
+ * Written by Jamie Zawinski <jwz@jwz.org>
+ * Pty and vt100 emulation by Fredrik Tolf <fredrik@dolda2000.com>
*/
-#include "screenhack.h"
+#ifdef HAVE_CONFIG_H
+# include "config.h"
+#endif /* HAVE_CONFIG_H */
+
#include <stdio.h>
-#include <X11/Xutil.h>
-#include <X11/Xatom.h>
-#include <X11/Intrinsic.h>
+#include <signal.h>
+#include <sys/wait.h>
+
+#ifndef HAVE_COCOA
+# define XK_MISCELLANY
+# include <X11/keysymdef.h>
+# include <X11/Xatom.h>
+# include <X11/Intrinsic.h>
+#endif
+
+#ifdef HAVE_UNISTD_H
+# include <unistd.h>
+# include <fcntl.h> /* for O_RDWR */
+#endif
-extern XtAppContext app;
+#ifdef HAVE_FORKPTY
+# include <sys/ioctl.h>
+# ifdef HAVE_PTY_H
+# include <pty.h>
+# endif
+# ifdef HAVE_UTIL_H
+# include <util.h>
+# endif
+#endif /* HAVE_FORKPTY */
+
+#include "screenhack.h"
#define FUZZY_BORDER
#define CURSOR_INDEX 128
+#define NPAR 16
+
+#define BUILTIN_FONT
+
+#ifdef BUILTIN_FONT
+# include "images/6x10font.xbm"
+#endif /* BUILTIN_FONT */
+
typedef struct {
unsigned char name;
int width, height;
XFontStruct *font;
int grid_width, grid_height;
int char_width, char_height;
+ int saved_x, saved_y;
int scale;
int ticks;
+ int mode;
+ pid_t pid;
+ int escstate;
+ int csiparam[NPAR];
+ int curparam;
p_char **chars;
p_cell *cells;
XGCValues gcv;
int cursor_x, cursor_y;
XtIntervalId cursor_timer;
+ XtIntervalId pipe_timer;
Time cursor_blink;
FILE *pipe;
XtInputId pipe_id;
Bool input_available_p;
Time subproc_relaunch_delay;
+ XComposeStatus compose;
+ Bool meta_sends_esc_p;
+ Bool swap_bs_del_p;
+ int delay;
+
+ char last_c;
+ int bk;
+
+ Bool meta_done_once;
+ unsigned int meta_mask;
} p_state;
that box (the "charcell" box) then we're going to lose it. Alas.
*/
-static p_state *
-init_phosphor (Display *dpy, Window window)
+
+static void clear (p_state *);
+static void set_cursor (p_state *, Bool on);
+
+static void *
+phosphor_init (Display *dpy, Window window)
{
int i;
unsigned long flags;
p_state *state = (p_state *) calloc (sizeof(*state), 1);
- char *fontname = get_string_resource ("font", "Font");
+ char *fontname = get_string_resource (dpy, "font", "Font");
XFontStruct *font;
state->dpy = dpy;
state->window = window;
XGetWindowAttributes (dpy, window, &state->xgwa);
+/* XSelectInput (dpy, window, state->xgwa.your_event_mask | ExposureMask);*/
- state->font = XLoadQueryFont (dpy, fontname);
+ state->delay = get_integer_resource (dpy, "delay", "Integer");
+ state->meta_sends_esc_p = get_boolean_resource (dpy, "metaSendsESC", "Boolean");
+ state->swap_bs_del_p = get_boolean_resource (dpy, "swapBSDEL", "Boolean");
- if (!state->font)
+ if (!strcasecmp (fontname, "builtin") ||
+ !strcasecmp (fontname, "(builtin)"))
{
- fprintf(stderr, "couldn't load font \"%s\"\n", fontname);
+#ifndef BUILTIN_FONT
+ fprintf (stderr, "%s: no builtin font\n", progname);
state->font = XLoadQueryFont (dpy, "fixed");
+#endif /* !BUILTIN_FONT */
}
- if (!state->font)
+ else
{
- fprintf(stderr, "couldn't load font \"fixed\"");
- exit(1);
+ state->font = XLoadQueryFont (dpy, fontname);
+
+ if (!state->font)
+ {
+ fprintf(stderr, "couldn't load font \"%s\"\n", fontname);
+ state->font = XLoadQueryFont (dpy, "fixed");
+ }
+ if (!state->font)
+ {
+ fprintf(stderr, "couldn't load font \"fixed\"");
+ exit(1);
+ }
}
font = state->font;
- state->scale = get_integer_resource ("scale", "Integer");
- state->ticks = STATE_MAX + get_integer_resource ("ticks", "Integer");
+ state->scale = get_integer_resource (dpy, "scale", "Integer");
+ state->ticks = STATE_MAX + get_integer_resource (dpy, "ticks", "Integer");
+ state->escstate = 0;
+
+ {
+ char *s = get_string_resource (dpy, "mode", "Integer");
+ state->mode = 0;
+ if (!s || !*s || !strcasecmp (s, "pipe"))
+ state->mode = 0;
+ else if (!strcasecmp (s, "pty"))
+ state->mode = 1;
+ else
+ fprintf (stderr, "%s: mode must be either `pipe' or `pty', not `%s'\n",
+ progname, s);
+
+#ifndef HAVE_FORKPTY
+ fprintf (stderr, "%s: no pty support on this system; using -pipe mode.\n",
+ progname);
+ state->mode = 0;
+#endif /* HAVE_FORKPTY */
+ }
#if 0
for (i = 0; i < font->n_properties; i++)
printf ("font: %s\n", XGetAtomName(dpy, font->properties[i].card32));
#endif /* 0 */
- state->cursor_blink = get_integer_resource ("cursor", "Time");
+ state->cursor_blink = get_integer_resource (dpy, "cursor", "Time");
state->subproc_relaunch_delay =
- (1000 * get_integer_resource ("relaunch", "Time"));
+ (1000 * get_integer_resource (dpy, "relaunch", "Time"));
- state->char_width = font->max_bounds.width;
- state->char_height = font->max_bounds.ascent + font->max_bounds.descent;
+# ifdef BUILTIN_FONT
+ if (! font)
+ {
+ state->char_width = (font6x10_width / 256) - 1;
+ state->char_height = font6x10_height;
+ }
+ else
+# endif /* BUILTIN_FONT */
+ {
+ state->char_width = font->max_bounds.width;
+ state->char_height = font->max_bounds.ascent + font->max_bounds.descent;
+ }
state->grid_width = state->xgwa.width / (state->char_width * state->scale);
state->grid_height = state->xgwa.height /(state->char_height * state->scale);
int h1, h2;
double s1, s2, v1, v2;
- unsigned long fg = get_pixel_resource ("foreground", "Foreground",
- state->dpy, state->xgwa.colormap);
- unsigned long bg = get_pixel_resource ("background", "Background",
- state->dpy, state->xgwa.colormap);
- unsigned long flare = get_pixel_resource ("flareForeground", "Foreground",
- state->dpy,state->xgwa.colormap);
- unsigned long fade = get_pixel_resource ("fadeForeground", "Foreground",
- state->dpy,state->xgwa.colormap);
+ unsigned long fg = get_pixel_resource (state->dpy, state->xgwa.colormap,
+ "foreground", "Foreground");
+ unsigned long bg = get_pixel_resource (state->dpy, state->xgwa.colormap,
+ "background", "Background");
+ unsigned long flare = get_pixel_resource (state->dpy,state->xgwa.colormap,
+ "flareForeground", "Foreground");
+ unsigned long fade = get_pixel_resource (state->dpy,state->xgwa.colormap,
+ "fadeForeground", "Foreground");
XColor start, end;
/* Now, GCs all around.
*/
- state->gcv.font = font->fid;
+ state->gcv.font = (font ? font->fid : 0);
state->gcv.cap_style = CapRound;
#ifdef FUZZY_BORDER
state->gcv.line_width = (int) (((long) state->scale) * 1.3);
capture_font_bits (state);
+ set_cursor (state, True);
+
launch_text_generator (state);
+/* clear (state);*/
return state;
}
+/* Re-query the window size and update the internal character grid if changed.
+ */
+static void
+resize_grid (p_state *state)
+{
+ int ow = state->grid_width;
+ int oh = state->grid_height;
+ p_cell *ocells = state->cells;
+ int x, y;
+
+ XGetWindowAttributes (state->dpy, state->window, &state->xgwa);
+
+ state->grid_width = state->xgwa.width /(state->char_width * state->scale);
+ state->grid_height = state->xgwa.height /(state->char_height * state->scale);
+
+ if (ow == state->grid_width &&
+ oh == state->grid_height)
+ return;
+
+ state->cells = (p_cell *) calloc (sizeof(p_cell),
+ state->grid_width * state->grid_height);
+
+ for (y = 0; y < state->grid_height; y++)
+ {
+ for (x = 0; x < state->grid_width; x++)
+ {
+ p_cell *ncell = &state->cells [state->grid_width * y + x];
+ if (x < ow && y < oh)
+ *ncell = ocells [ow * y + x];
+ ncell->changed = True;
+ }
+ }
+
+ if (state->cursor_x >= state->grid_width)
+ state->cursor_x = state->grid_width-1;
+ if (state->cursor_y >= state->grid_height)
+ state->cursor_y = state->grid_height-1;
+
+ free (ocells);
+}
+
+
static void
capture_font_bits (p_state *state)
{
XFontStruct *font = state->font;
- int safe_width = font->max_bounds.rbearing - font->min_bounds.lbearing;
- int height = state->char_height;
+ int safe_width, height;
unsigned char string[257];
int i;
- Pixmap p = XCreatePixmap (state->dpy, state->window,
- (safe_width * 256), height, 1);
+ Pixmap p;
+
+# ifdef BUILTIN_FONT
+ Pixmap p2 = 0;
+
+ if (!font)
+ {
+ safe_width = state->char_width + 1;
+ height = state->char_height;
+ p2 = XCreatePixmapFromBitmapData (state->dpy, state->window,
+ (char *) font6x10_bits,
+ font6x10_width,
+ font6x10_height,
+ 1, 0, 1);
+ }
+ else
+# endif /* BUILTIN_FONT */
+ {
+ safe_width = font->max_bounds.rbearing - font->min_bounds.lbearing;
+ height = state->char_height;
+ }
+
+ p = XCreatePixmap (state->dpy, state->window,
+ (safe_width * 256), height, 1);
for (i = 0; i < 256; i++)
string[i] = (unsigned char) i;
state->gcv.foreground = 1;
state->gc1 = XCreateGC (state->dpy, p,
- (GCFont | GCForeground | GCBackground |
+ ((font ? GCFont : 0) |
+ GCForeground | GCBackground |
GCCapStyle | GCLineWidth),
&state->gcv);
+#ifdef HAVE_COCOA
+ jwxyz_XSetAntiAliasing (state->dpy, state->gc0, False);
+ jwxyz_XSetAntiAliasing (state->dpy, state->gc1, False);
+#endif
+
#ifdef FUZZY_BORDER
{
state->gcv.line_width = (int) (((long) state->scale) * 0.8);
if (state->gcv.line_width < 1)
state->gcv.line_width = 1;
state->gc2 = XCreateGC (state->dpy, p,
- (GCFont | GCForeground | GCBackground |
+ ((font ? GCFont : 0) |
+ GCForeground | GCBackground |
GCCapStyle | GCLineWidth),
&state->gcv);
}
XFillRectangle (state->dpy, p, state->gc0, 0, 0, (safe_width * 256), height);
- for (i = 0; i < 256; i++)
+# ifdef BUILTIN_FONT
+ if (p2)
{
- if (string[i] < font->min_char_or_byte2 ||
- string[i] > font->max_char_or_byte2)
- continue;
- XDrawString (state->dpy, p, state->gc1,
- i * safe_width, font->ascent,
- (char *) (string + i), 1);
+ XCopyPlane (state->dpy, p2, p, state->gc1,
+ 0, 0, font6x10_width, font6x10_height,
+ 0, 0, 1);
+ XFreePixmap (state->dpy, p2);
+ }
+ else
+# endif /* BUILTIN_FONT */
+ {
+ for (i = 0; i < 256; i++)
+ {
+ if (string[i] < font->min_char_or_byte2 ||
+ string[i] > font->max_char_or_byte2)
+ continue;
+ XDrawString (state->dpy, p, state->gc1,
+ i * safe_width, font->ascent,
+ (char *) (string + i), 1);
+ }
}
/* Draw the cursor. */
XFillRectangle (state->dpy, p, state->gc1,
(CURSOR_INDEX * safe_width), 1,
- (font->per_char
- ? font->per_char['n'-font->min_char_or_byte2].width
- : font->max_bounds.width),
- font->ascent - 1);
-
-#if 0
- XCopyPlane (state->dpy, p, state->window, state->gcs[FLARE],
- 0, 0, (safe_width * 256), height, 0, 0, 1L);
- XSync(state->dpy, False);
-#endif
+ (font
+ ? (font->per_char
+ ? font->per_char['n'-font->min_char_or_byte2].width
+ : font->max_bounds.width)
+ : state->char_width),
+ (font
+ ? font->ascent - 1
+ : state->char_height));
- XSync (state->dpy, False);
state->font_bits = XGetImage (state->dpy, p, 0, 0,
(safe_width * 256), height, ~0L, XYPixmap);
XFreePixmap (state->dpy, p);
int x1, y;
XFontStruct *font = state->font;
- int safe_width = font->max_bounds.rbearing - font->min_bounds.lbearing;
+ int safe_width = (font
+ ? font->max_bounds.rbearing - font->min_bounds.lbearing
+ : state->char_width + 1);
int width = state->scale * state->char_width;
int height = state->scale * state->char_height;
- if (c < font->min_char_or_byte2 ||
- c > font->max_char_or_byte2)
+ if (font && (c < font->min_char_or_byte2 ||
+ c > font->max_char_or_byte2))
goto DONE;
gc = state->gc1;
set_cursor (p_state *state, Bool on)
{
if (set_cursor_1 (state, on))
-;
{
if (state->cursor_timer)
XtRemoveTimeOut (state->cursor_timer);
cursor_off_timer (XtPointer closure, XtIntervalId *id)
{
p_state *state = (p_state *) closure;
+ XtAppContext app = XtDisplayToApplicationContext (state->dpy);
set_cursor_1 (state, False);
state->cursor_timer = XtAppAddTimeOut (app, state->cursor_blink,
cursor_on_timer, closure);
cursor_on_timer (XtPointer closure, XtIntervalId *id)
{
p_state *state = (p_state *) closure;
+ XtAppContext app = XtDisplayToApplicationContext (state->dpy);
set_cursor_1 (state, True);
state->cursor_timer = XtAppAddTimeOut (app, 2 * state->cursor_blink,
cursor_off_timer, closure);
print_char (p_state *state, int c)
{
p_cell *cell = &state->cells[state->grid_width * state->cursor_y
- + state->cursor_x];
+ + state->cursor_x];
+ int i, start, end;
/* Start the cursor fading (in case we don't end up overwriting it.) */
if (cell->state == FLARE || cell->state == NORMAL)
cell->state = FADE;
cell->changed = True;
}
-
- if (c == '\t') c = ' '; /* blah. */
-
- if (c == '\r' || c == '\n')
- {
- state->cursor_x = 0;
- if (state->cursor_y == state->grid_height - 1)
- scroll (state);
- else
- state->cursor_y++;
- }
- else if (c == '\014')
+
+ if (state->pid) /* Only interpret VT100 sequences if running in pty-mode.
+ It would be nice if we could just interpret them all
+ the time, but that would require subprocesses to send
+ CRLF line endings instead of bare LF, so that's no good.
+ */
{
- clear (state);
+ switch (state->escstate)
+ {
+ case 0:
+ switch (c)
+ {
+ case 7: /* BEL */
+ /* Dummy case - we don't want the screensaver to beep */
+ /* #### But maybe this should flash the screen? */
+ break;
+ case 8: /* BS */
+ if (state->cursor_x > 0)
+ state->cursor_x--;
+ break;
+ case 9: /* HT */
+ if (state->cursor_x < state->grid_width - 8)
+ {
+ state->cursor_x = (state->cursor_x & ~7) + 8;
+ }
+ else
+ {
+ state->cursor_x = 0;
+ if (state->cursor_y < state->grid_height - 1)
+ state->cursor_y++;
+ else
+ scroll (state);
+ }
+ break;
+ case 10: /* LF */
+ case 11: /* VT */
+ case 12: /* FF */
+ if(state->last_c == 13)
+ {
+ cell->state = NORMAL;
+ cell->p_char = state->chars[state->bk];
+ cell->changed = True;
+ }
+ if (state->cursor_y < state->grid_height - 1)
+ state->cursor_y++;
+ else
+ scroll (state);
+ break;
+ case 13: /* CR */
+ state->cursor_x = 0;
+ cell = &state->cells[state->grid_width * state->cursor_y];
+ if((cell->p_char == NULL) || (cell->p_char->name == CURSOR_INDEX))
+ state->bk = ' ';
+ else
+ state->bk = cell->p_char->name;
+ break;
+ case 14: /* SO */
+ case 15: /* SI */
+ /* Dummy case - I don't want to load several fonts for
+ the maybe two programs world-wide that use that */
+ break;
+ case 24: /* CAN */
+ case 26: /* SUB */
+ /* Dummy case - these interrupt escape sequences, so
+ they don't do anything in this state */
+ break;
+ case 27: /* ESC */
+ state->escstate = 1;
+ break;
+ case 127: /* DEL */
+ /* Dummy case - this is supposed to be ignored */
+ break;
+ case 155: /* CSI */
+ state->escstate = 2;
+ for(i = 0; i < NPAR; i++)
+ state->csiparam[i] = 0;
+ state->curparam = 0;
+ break;
+ default:
+ cell->state = FLARE;
+ cell->p_char = state->chars[c];
+ cell->changed = True;
+ state->cursor_x++;
+
+ if (c != ' ' && cell->p_char->blank_p)
+ cell->p_char = state->chars[CURSOR_INDEX];
+
+ if (state->cursor_x >= state->grid_width - 1)
+ {
+ state->cursor_x = 0;
+ if (state->cursor_y >= state->grid_height - 1)
+ scroll (state);
+ else
+ state->cursor_y++;
+ }
+ break;
+ }
+ break;
+ case 1:
+ switch (c)
+ {
+ case 24: /* CAN */
+ case 26: /* SUB */
+ state->escstate = 0;
+ break;
+ case 'c': /* Reset */
+ clear (state);
+ state->escstate = 0;
+ break;
+ case 'D': /* Linefeed */
+ if (state->cursor_y < state->grid_height - 1)
+ state->cursor_y++;
+ else
+ scroll (state);
+ state->escstate = 0;
+ break;
+ case 'E': /* Newline */
+ state->cursor_x = 0;
+ state->escstate = 0;
+ break;
+ case 'M': /* Reverse newline */
+ if (state->cursor_y > 0)
+ state->cursor_y--;
+ state->escstate = 0;
+ break;
+ case '7': /* Save state */
+ state->saved_x = state->cursor_x;
+ state->saved_y = state->cursor_y;
+ state->escstate = 0;
+ break;
+ case '8': /* Restore state */
+ state->cursor_x = state->saved_x;
+ state->cursor_y = state->saved_y;
+ state->escstate = 0;
+ break;
+ case '[': /* CSI */
+ state->escstate = 2;
+ for(i = 0; i < NPAR; i++)
+ state->csiparam[i] = 0;
+ state->curparam = 0;
+ break;
+ case '%': /* Select charset */
+ /* No, I don't support UTF-8, since the phosphor font
+ isn't even Unicode anyway. We must still catch the
+ last byte, though. */
+ case '(':
+ case ')':
+ /* I don't support different fonts either - see above
+ for SO and SI */
+ state->escstate = 3;
+ break;
+ default:
+ /* Escape sequences not supported:
+ *
+ * H - Set tab stop
+ * Z - Terminal identification
+ * > - Keypad change
+ * = - Other keypad change
+ * ] - OS command
+ */
+ state->escstate = 0;
+ break;
+ }
+ break;
+ case 2:
+ switch (c)
+ {
+ case 24: /* CAN */
+ case 26: /* SUB */
+ state->escstate = 0;
+ break;
+ case '0': case '1': case '2': case '3': case '4':
+ case '5': case '6': case '7': case '8': case '9':
+ if (state->curparam < NPAR)
+ state->csiparam[state->curparam] = (state->csiparam[state->curparam] * 10) + (c - '0');
+ break;
+ case ';':
+ state->csiparam[++state->curparam] = 0;
+ break;
+ case '[':
+ state->escstate = 3;
+ break;
+ case '@':
+ for (i = 0; i < state->csiparam[0]; i++)
+ {
+ if(++state->cursor_x > state->grid_width)
+ {
+ state->cursor_x = 0;
+ if (state->cursor_y < state->grid_height - 1)
+ state->cursor_y++;
+ else
+ scroll (state);
+ }
+ cell = &state->cells[state->grid_width * state->cursor_y + state->cursor_x];
+ if (cell->state == FLARE || cell->state == NORMAL)
+ {
+ cell->state = FADE;
+ cell->changed = True;
+ }
+ }
+ state->escstate = 0;
+ break;
+ case 'F':
+ state->cursor_x = 0;
+ case 'A':
+ if (state->csiparam[0] == 0)
+ state->csiparam[0] = 1;
+ if ((state->cursor_y -= state->csiparam[0]) < 0)
+ state->cursor_y = 0;
+ state->escstate = 0;
+ break;
+ case 'E':
+ state->cursor_x = 0;
+ case 'e':
+ case 'B':
+ if (state->csiparam[0] == 0)
+ state->csiparam[0] = 1;
+ if ((state->cursor_y += state->csiparam[0]) >= state->grid_height - 1)
+ state->cursor_y = state->grid_height - 1;
+ state->escstate = 0;
+ break;
+ case 'a':
+ case 'C':
+ if (state->csiparam[0] == 0)
+ state->csiparam[0] = 1;
+ if ((state->cursor_x += state->csiparam[0]) >= state->grid_width - 1)
+ state->cursor_x = state->grid_width - 1;
+ state->escstate = 0;
+ break;
+ case 'D':
+ if (state->csiparam[0] == 0)
+ state->csiparam[0] = 1;
+ if ((state->cursor_x -= state->csiparam[0]) < 0)
+ state->cursor_x = 0;
+ state->escstate = 0;
+ break;
+ case 'd':
+ if ((state->cursor_y = (state->csiparam[0] - 1)) >= state->grid_height - 1)
+ state->cursor_y = state->grid_height - 1;
+ state->escstate = 0;
+ break;
+ case '`':
+ case 'G':
+ if ((state->cursor_x = (state->csiparam[0] - 1)) >= state->grid_width - 1)
+ state->cursor_x = state->grid_width - 1;
+ state->escstate = 0;
+ break;
+ case 'f':
+ case 'H':
+ if ((state->cursor_y = (state->csiparam[0] - 1)) >= state->grid_height - 1)
+ state->cursor_y = state->grid_height - 1;
+ if ((state->cursor_x = (state->csiparam[1] - 1)) >= state->grid_width - 1)
+ state->cursor_x = state->grid_width - 1;
+ if(state->cursor_y < 0)
+ state->cursor_y = 0;
+ if(state->cursor_x < 0)
+ state->cursor_x = 0;
+ state->escstate = 0;
+ break;
+ case 'J':
+ start = 0;
+ end = state->grid_height * state->grid_width;
+ if (state->csiparam[0] == 0)
+ start = state->grid_width * state->cursor_y + state->cursor_x;
+ if (state->csiparam[0] == 1)
+ end = state->grid_width * state->cursor_y + state->cursor_x;
+ for (i = start; i < end; i++)
+ {
+ cell = &state->cells[i];
+ if (cell->state == FLARE || cell->state == NORMAL)
+ {
+ cell->state = FADE;
+ cell->changed = True;
+ }
+ }
+ set_cursor (state, True);
+ state->escstate = 0;
+ break;
+ case 'K':
+ start = 0;
+ end = state->grid_width;
+ if (state->csiparam[0] == 0)
+ start = state->cursor_x;
+ if (state->csiparam[1] == 1)
+ end = state->cursor_x;
+ for (i = start; i < end; i++)
+ {
+ if (cell->state == FLARE || cell->state == NORMAL)
+ {
+ cell->state = FADE;
+ cell->changed = True;
+ }
+ cell++;
+ }
+ state->escstate = 0;
+ break;
+ case 's': /* Save position */
+ state->saved_x = state->cursor_x;
+ state->saved_y = state->cursor_y;
+ state->escstate = 0;
+ break;
+ case 'u': /* Restore position */
+ state->cursor_x = state->saved_x;
+ state->cursor_y = state->saved_y;
+ state->escstate = 0;
+ break;
+ case '?': /* DEC Private modes */
+ if ((state->curparam != 0) || (state->csiparam[0] != 0))
+ state->escstate = 0;
+ break;
+ default:
+ /* Known unsupported CSIs:
+ *
+ * L - Insert blank lines
+ * M - Delete lines (I don't know what this means...)
+ * P - Delete characters
+ * X - Erase characters (difference with P being...?)
+ * c - Terminal identification
+ * g - Clear tab stop(s)
+ * h - Set mode (Mainly due to its complexity and lack of good
+ docs)
+ * l - Clear mode
+ * m - Set mode (Phosphor is, per defenition, green on black)
+ * n - Status report
+ * q - Set keyboard LEDs
+ * r - Set scrolling region (too exhausting - noone uses this,
+ right?)
+ */
+ state->escstate = 0;
+ break;
+ }
+ break;
+ case 3:
+ state->escstate = 0;
+ break;
+ }
+ set_cursor (state, True);
}
else
{
- cell->state = FLARE;
- cell->p_char = state->chars[c];
- cell->changed = True;
- state->cursor_x++;
-
- if (c != ' ' && cell->p_char->blank_p)
- cell->p_char = state->chars[CURSOR_INDEX];
-
- if (state->cursor_x >= state->grid_width - 1)
- {
- state->cursor_x = 0;
- if (state->cursor_y >= state->grid_height - 1)
- scroll (state);
- else
- state->cursor_y++;
- }
+ if (c == '\t') c = ' '; /* blah. */
+
+ if (c == '\r' || c == '\n') /* handle CR, LF, or CRLF as "new line". */
+ {
+ if (c == '\n' && state->last_c == '\r')
+ ; /* CRLF -- do nothing */
+ else
+ {
+ state->cursor_x = 0;
+ if (state->cursor_y == state->grid_height - 1)
+ scroll (state);
+ else
+ state->cursor_y++;
+ }
+ }
+ else if (c == '\014')
+ {
+ clear (state);
+ }
+ else
+ {
+ cell->state = FLARE;
+ cell->p_char = state->chars[c];
+ cell->changed = True;
+ state->cursor_x++;
+
+ if (c != ' ' && cell->p_char->blank_p)
+ cell->p_char = state->chars[CURSOR_INDEX];
+
+ if (state->cursor_x >= state->grid_width - 1)
+ {
+ state->cursor_x = 0;
+ if (state->cursor_y >= state->grid_height - 1)
+ scroll (state);
+ else
+ state->cursor_y++;
+ }
+ }
+ set_cursor (state, True);
}
- set_cursor (state, True);
+
+ state->last_c = c;
}
}
-static void
-run_phosphor (p_state *state)
+static unsigned long
+phosphor_draw (Display *dpy, Window window, void *closure)
{
+ p_state *state = (p_state *) closure;
update_display (state, True);
decay (state);
drain_input (state);
+ return state->delay;
}
\f
static void
launch_text_generator (p_state *state)
{
- char *oprogram = get_string_resource ("program", "Program");
- char *program = (char *) malloc (strlen (oprogram) + 10);
+ XtAppContext app = XtDisplayToApplicationContext (state->dpy);
+ Display *dpy = state->dpy;
+ char buf[255];
+ char *oprogram = get_string_resource (dpy, "program", "Program");
+ char *program = (char *) malloc (strlen (oprogram) + 50);
strcpy (program, "( ");
strcat (program, oprogram);
+
+ /* Kludge! Special-case "xscreensaver-text" to tell it how wide
+ the screen is. We used to do this by just always feeding
+ `program' through sprintf() and setting the default value to
+ "xscreensaver-text --cols %d", but that makes things blow up
+ if someone ever uses a --program that includes a % anywhere.
+ */
+ if (!strcmp (oprogram, "xscreensaver-text"))
+ sprintf (program + strlen(program), " --cols %d", state->grid_width-1);
+
strcat (program, " ) 2>&1");
- if ((state->pipe = popen (program, "r")))
+#ifdef HAVE_FORKPTY
+ if(state->mode == 1)
{
- state->pipe_id =
- XtAppAddInput (app, fileno (state->pipe),
- (XtPointer) (XtInputReadMask | XtInputExceptMask),
- subproc_cb, (XtPointer) state);
+ int fd;
+ struct winsize ws;
+
+ ws.ws_row = state->grid_height - 1;
+ ws.ws_col = state->grid_width - 2;
+ ws.ws_xpixel = state->xgwa.width;
+ ws.ws_ypixel = state->xgwa.height;
+
+ state->pipe = NULL;
+ if((state->pid = forkpty(&fd, NULL, NULL, &ws)) < 0)
+ {
+ /* Unable to fork */
+ sprintf (buf, "%.100s: forkpty", progname);
+ perror(buf);
+ }
+ else if(!state->pid)
+ {
+ /* This is the child fork. */
+ char *av[10];
+ int i = 0;
+ if (putenv("TERM=vt100"))
+ abort();
+ av[i++] = "/bin/sh";
+ av[i++] = "-c";
+ av[i++] = program;
+ av[i] = 0;
+ execvp (av[0], av);
+ sprintf (buf, "%.100s: %.100s", progname, oprogram);
+ perror(buf);
+ exit(1);
+ }
+ else
+ {
+ /* This is the parent fork. */
+ state->pipe = fdopen(fd, "r+");
+ state->pipe_id =
+ XtAppAddInput (app, fileno (state->pipe),
+ (XtPointer) (XtInputReadMask | XtInputExceptMask),
+ subproc_cb, (XtPointer) state);
+ }
}
else
+#endif /* HAVE_FORKPTY */
{
- perror (program);
+ /* don't mess up controlling terminal if someone dumbly does
+ "-pipe -program tcsh". */
+ static int protected_stdin_p = 0;
+ if (! protected_stdin_p) {
+ fclose (stdin);
+ open ("/dev/null", O_RDWR); /* re-allocate fd 0 */
+ protected_stdin_p = 1;
+ }
+
+ if ((state->pipe = popen (program, "r")))
+ {
+ state->pipe_id =
+ XtAppAddInput (app, fileno (state->pipe),
+ (XtPointer) (XtInputReadMask | XtInputExceptMask),
+ subproc_cb, (XtPointer) state);
+ }
+ else
+ {
+ sprintf (buf, "%.100s: %.100s", progname, program);
+ perror (buf);
+ }
}
+
+ free (program);
}
relaunch_generator_timer (XtPointer closure, XtIntervalId *id)
{
p_state *state = (p_state *) closure;
+ if (!state->pipe_timer) abort();
+ state->pipe_timer = 0;
launch_text_generator (state);
}
static void
drain_input (p_state *state)
{
- if (state->input_available_p)
+ XtAppContext app = XtDisplayToApplicationContext (state->dpy);
+ if (state->input_available_p && state->pipe)
{
unsigned char s[2];
int n = read (fileno (state->pipe), (void *) s, 1);
{
XtRemoveInput (state->pipe_id);
state->pipe_id = 0;
- pclose (state->pipe);
+ if (state->pid)
+ {
+ waitpid(state->pid, NULL, 0);
+ fclose (state->pipe);
+ }
+ else
+ {
+ pclose (state->pipe);
+ }
state->pipe = 0;
- if (state->cursor_x != 0) /* break line if unbroken */
- print_char (state, '\n'); /* blank line */
+ if (state->cursor_x != 0) { /* break line if unbroken */
+ print_char (state, '\r');
+ print_char (state, '\n');
+ }
+ print_char (state, '\r'); /* blank line */
print_char (state, '\n');
/* Set up a timer to re-launch the subproc in a bit. */
- XtAppAddTimeOut (app, state->subproc_relaunch_delay,
- relaunch_generator_timer,
- (XtPointer) state);
+ state->pipe_timer =
+ XtAppAddTimeOut (app, state->subproc_relaunch_delay,
+ relaunch_generator_timer,
+ (XtPointer) state);
}
state->input_available_p = False;
}
-\f
-char *progclass = "Phosphor";
+/* The interpretation of the ModN modifiers is dependent on what keys
+ are bound to them: Mod1 does not necessarily mean "meta". It only
+ means "meta" if Meta_L or Meta_R are bound to it. If Meta_L is on
+ Mod5, then Mod5 is the one that means Meta. Oh, and Meta and Alt
+ aren't necessarily the same thing. Icepicks in my forehead!
+ */
+static unsigned int
+do_icccm_meta_key_stupidity (Display *dpy)
+{
+ unsigned int modbits = 0;
+# ifndef HAVE_COCOA
+ int i, j, k;
+ XModifierKeymap *modmap = XGetModifierMapping (dpy);
+ for (i = 3; i < 8; i++)
+ for (j = 0; j < modmap->max_keypermod; j++)
+ {
+ int code = modmap->modifiermap[i * modmap->max_keypermod + j];
+ KeySym *syms;
+ int nsyms = 0;
+ if (code == 0) continue;
+ syms = XGetKeyboardMapping (dpy, code, 1, &nsyms);
+ for (k = 0; k < nsyms; k++)
+ if (syms[k] == XK_Meta_L || syms[k] == XK_Meta_R ||
+ syms[k] == XK_Alt_L || syms[k] == XK_Alt_R)
+ modbits |= (1 << i);
+ XFree (syms);
+ }
+ XFreeModifiermap (modmap);
+# endif /* HAVE_COCOA */
+ return modbits;
+}
+
+/* Returns a mask of the bit or bits of a KeyPress event that mean "meta".
+ */
+static unsigned int
+meta_modifier (p_state *state)
+{
+ if (!state->meta_done_once)
+ {
+ /* Really, we are supposed to recompute this if a KeymapNotify
+ event comes in, but fuck it. */
+ state->meta_done_once = True;
+ state->meta_mask = do_icccm_meta_key_stupidity (state->dpy);
+ }
+ return state->meta_mask;
+}
+
+
+static void
+phosphor_reshape (Display *dpy, Window window, void *closure,
+ unsigned int w, unsigned int h)
+{
+ p_state *state = (p_state *) closure;
+ resize_grid (state);
-char *defaults [] = {
+# if defined(HAVE_FORKPTY) && defined(TIOCSWINSZ)
+ if (state->pid)
+ {
+ /* Tell the sub-process that the screen size has changed. */
+ struct winsize ws;
+ ws.ws_row = state->grid_height - 1;
+ ws.ws_col = state->grid_width - 2;
+ ws.ws_xpixel = state->xgwa.width;
+ ws.ws_ypixel = state->xgwa.height;
+ ioctl (fileno (state->pipe), TIOCSWINSZ, &ws);
+ kill (state->pid, SIGWINCH);
+ }
+# endif /* HAVE_FORKPTY && TIOCSWINSZ */
+}
+
+static Bool
+phosphor_event (Display *dpy, Window window, void *closure, XEvent *event)
+{
+ p_state *state = (p_state *) closure;
+
+ if (event->xany.type == Expose)
+ update_display (state, False);
+ else if (event->xany.type == KeyPress)
+ {
+ KeySym keysym;
+ unsigned char c = 0;
+ XLookupString (&event->xkey, (char *) &c, 1, &keysym,
+ &state->compose);
+ if (c != 0 && state->pipe)
+ {
+ if (!state->swap_bs_del_p) ;
+ else if (c == 127) c = 8;
+ else if (c == 8) c = 127;
+
+ /* If meta was held down, send ESC, or turn on the high bit. */
+ if (event->xkey.state & meta_modifier (state))
+ {
+ if (state->meta_sends_esc_p)
+ fputc ('\033', state->pipe);
+ else
+ c |= 0x80;
+ }
+
+ fputc (c, state->pipe);
+ fflush (state->pipe);
+ event->xany.type = 0; /* don't interpret this event defaultly. */
+ }
+ return True;
+ }
+
+ return False;
+}
+
+static void
+phosphor_free (Display *dpy, Window window, void *closure)
+{
+ p_state *state = (p_state *) closure;
+
+ if (state->pipe_id)
+ XtRemoveInput (state->pipe_id);
+ if (state->pipe)
+ pclose (state->pipe);
+ if (state->cursor_timer)
+ XtRemoveTimeOut (state->cursor_timer);
+ if (state->pipe_timer)
+ XtRemoveTimeOut (state->pipe_timer);
+
+ /* #### there's more to free here */
+
+ free (state);
+}
+
+
+
+static const char *phosphor_defaults [] = {
".background: Black",
- ".foreground: Green",
- "*fadeForeground: DarkGreen",
- "*flareForeground: White",
+ ".foreground: #00FF00",
+ "*fadeForeground: #006400",
+ "*flareForeground: #FFFFFF",
+#if defined(BUILTIN_FONT)
+ "*font: (builtin)",
+#elif defined(HAVE_COCOA)
+ "*font: Monaco 15",
+#else
"*font: fixed",
+#endif
"*scale: 6",
"*ticks: 20",
"*delay: 50000",
"*cursor: 333",
- "*program: " ZIPPY_PROGRAM,
+ "*program: xscreensaver-text",
"*relaunch: 5",
+ "*metaSendsESC: True",
+ "*swapBSDEL: True",
+#ifdef HAVE_FORKPTY
+ "*mode: pty",
+#else /* !HAVE_FORKPTY */
+ "*mode: pipe",
+#endif /* !HAVE_FORKPTY */
0
};
-XrmOptionDescRec options [] = {
+static XrmOptionDescRec phosphor_options [] = {
{ "-font", ".font", XrmoptionSepArg, 0 },
{ "-scale", ".scale", XrmoptionSepArg, 0 },
{ "-ticks", ".ticks", XrmoptionSepArg, 0 },
{ "-delay", ".delay", XrmoptionSepArg, 0 },
{ "-program", ".program", XrmoptionSepArg, 0 },
+ { "-pty", ".mode", XrmoptionNoArg, "pty" },
+ { "-pipe", ".mode", XrmoptionNoArg, "pipe" },
+ { "-meta", ".metaSendsESC", XrmoptionNoArg, "False" },
+ { "-esc", ".metaSendsESC", XrmoptionNoArg, "True" },
+ { "-bs", ".swapBSDEL", XrmoptionNoArg, "False" },
+ { "-del", ".swapBSDEL", XrmoptionNoArg, "True" },
{ 0, 0, 0, 0 }
};
-void
-screenhack (Display *dpy, Window window)
-{
- int delay = get_integer_resource ("delay", "Integer");
- p_state *state = init_phosphor (dpy, window);
-
- clear (state);
-
- while (1)
- {
- run_phosphor (state);
- XSync (dpy, False);
- screenhack_handle_events (dpy);
-
- if (XtAppPending (app) & (XtIMTimer|XtIMAlternateInput))
- XtAppProcessEvent (app, XtIMTimer|XtIMAlternateInput);
-
- if (delay) usleep (delay);
- }
-}
+XSCREENSAVER_MODULE ("Phosphor", phosphor)
projects / xscreensaver / blobdiff