-/* xscreensaver, Copyright (c) 1992-2005 Jamie Zawinski <jwz@jwz.org>
+/* xscreensaver, Copyright (c) 1992-2006 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
#include "grabscreen.h"
#include "resources.h"
-#include "vroot.h"
-#include <X11/Xatom.h>
-
-#include <X11/Intrinsic.h> /* for XtInputId, etc */
-
+#ifdef HAVE_COCOA
+# include "jwxyz.h"
+# include "colorbars.h"
+#else /* !HAVE_COCOA -- real Xlib */
+# include "vroot.h"
+# include <X11/Xatom.h>
+# include <X11/Intrinsic.h> /* for XtInputId, etc */
+#endif /* !HAVE_COCOA */
#ifdef HAVE_UNISTD_H
# include <unistd.h>
extern char *progname;
-extern XtAppContext app;
+static void print_loading_msg (Screen *, Window);
+
+#ifndef HAVE_COCOA
static Bool error_handler_hit_p = False;
explain.
*/
Bool
-use_subwindow_mode_p(Screen *screen, Window window)
+use_subwindow_mode_p (Screen *screen, Window window)
{
if (window != VirtualRootWindowOfScreen(screen))
return False;
XFillRectangle (dpy, drawable, gc, x, y, size, size);
XFillRectangle (dpy, drawable, gc, x+size, y+size, size, size);
}
+ XFreeGC (dpy, gc);
}
&name)
== Success
&& type != None)
- return strdup((char *) name);
+ return (char *) name;
else
return 0;
}
+
static Bool
get_geometry (Display *dpy, Window window, XRectangle *ret)
{
&& type != None)
{
int flags = XParseGeometry ((char *) name, &x, &y, &w, &h);
+ free (name);
/* Require all four, and don't allow negative positions. */
if (flags == (XValue|YValue|WidthValue|HeightValue))
{
}
-
static void
hack_subproc_environment (Display *dpy)
{
parse arguments? I'm not sure. But using fork() and execvp()
here seems to close the race.
*/
-
static void
exec_simple_command (const char *command)
{
execvp (av[0], av); /* shouldn't return. */
}
+
static void
fork_exec_wait (const char *command)
{
FILE *read_pipe;
FILE *write_pipe;
XtInputId pipe_id;
+ pid_t pid;
} grabclient_data;
void *closure),
void *closure)
{
+ XtAppContext app = XtDisplayToApplicationContext (DisplayOfScreen (screen));
grabclient_data *data;
char buf [255];
pid_t forked;
(XtPointer) (XtInputReadMask | XtInputExceptMask),
finalize_cb, (XtPointer) data);
- switch ((int) (forked = fork ()))
+ forked = fork ();
+ switch ((int) forked)
{
case -1:
sprintf (buf, "%s: couldn't fork", progname);
default: /* parent */
fclose (data->write_pipe);
data->write_pipe = 0;
+ data->pid = forked;
break;
}
}
if (name) free (name);
fclose (data->read_pipe);
+
+ if (data->pid) /* reap zombies */
+ {
+ int status;
+ waitpid (data->pid, &status, 0);
+ data->pid = 0;
+ }
+
memset (data, 0, sizeof (*data));
free (data);
}
XRectangle *geom_ret)
{
Display *dpy = DisplayOfScreen (screen);
- char *grabber = get_string_resource ("desktopGrabber", "DesktopGrabber");
+ char *grabber = get_string_resource(dpy, "desktopGrabber", "DesktopGrabber");
char *cmd;
char id[200];
then the game is already over.
*/
sprintf (cmd, grabber, id);
+ free (grabber);
+ grabber = 0;
/* In case "cmd" fails, leave some random image on the screen, not just
black or white, so that it's more obvious what went wrong. */
checkerboard (screen, drawable);
+ if (window == drawable)
+ print_loading_msg (screen, window);
XSync (dpy, True);
hack_subproc_environment (dpy);
XSync (dpy, True);
}
+#else /* HAVE_COCOA */
-/* Loads an image into the Drawable in the background;
- when the image is fully loaded, runs the callback.
- When grabbing desktop images, the Window will be unmapped first.
+/* Gets the name of an image file to load by running xscreensaver-getimage-file
+ at the end of a pipe. This can be very slow!
*/
-void
-fork_load_random_image (Screen *screen, Window window, Drawable drawable,
- void (*callback) (Screen *, Window, Drawable,
- const char *name, XRectangle *geom,
- void *closure),
- void *closure)
+static FILE *
+open_image_name_pipe (const char *dir)
{
- load_random_image_1 (screen, window, drawable, callback, closure, 0, 0);
+ char *cmd = malloc (strlen(dir) * 2 + 100);
+ char *s;
+ strcpy (cmd, "xscreensaver-getimage-file --name ");
+ s = cmd + strlen (cmd);
+ while (*dir) {
+ char c = *dir++;
+ /* put a backslash in front of any character that might confuse sh. */
+ if (! ((c >= 'a' && c <= 'z') ||
+ (c >= 'A' && c <= 'Z') ||
+ (c >= '0' && c <= '9') ||
+ c == '.' || c == '_' || c == '-' || c == '+' || c == '/'))
+ *s++ = '\\';
+ *s++ = c;
+ }
+ *s = 0;
+
+ FILE *pipe = popen (cmd, "r");
+ free (cmd);
+ return pipe;
+}
+
+
+struct pipe_closure {
+ FILE *pipe;
+ XtInputId id;
+ Screen *screen;
+ Window xwindow;
+ Drawable drawable;
+ void (*callback) (Screen *, Window, Drawable,
+ const char *name, XRectangle *geom,
+ void *closure);
+ void *closure;
+};
+
+
+static void
+pipe_cb (XtPointer closure, int *source, XtInputId *id)
+{
+ /* This is not called from a signal handler, so doing stuff here is fine.
+ */
+ struct pipe_closure *clo2 = (struct pipe_closure *) closure;
+ char buf[10240];
+ fgets (buf, sizeof(buf)-1, clo2->pipe);
+ pclose (clo2->pipe);
+ clo2->pipe = 0;
+ XtRemoveInput (clo2->id);
+ clo2->id = 0;
+
+ /* strip trailing newline */
+ int L = strlen(buf);
+ while (L > 0 && (buf[L-1] == '\r' || buf[L-1] == '\n'))
+ buf[--L] = 0;
+
+ Display *dpy = DisplayOfScreen (clo2->screen);
+ XRectangle geom;
+
+ if (! osx_load_image_file (clo2->screen, clo2->xwindow, clo2->drawable,
+ buf, &geom)) {
+ /* unable to load image - draw colorbars
+ */
+ XWindowAttributes xgwa;
+ XGetWindowAttributes (dpy, clo2->xwindow, &xgwa);
+ Window r;
+ int x, y;
+ unsigned int w, h, bbw, d;
+ XGetGeometry (dpy, clo2->drawable, &r, &x, &y, &w, &h, &bbw, &d);
+ draw_colorbars (clo2->screen, xgwa.visual, clo2->drawable, xgwa.colormap,
+ 0, 0, w, h);
+ geom.x = geom.y = 0;
+ geom.width = w;
+ geom.height = h;
+ }
+
+ clo2->callback (clo2->screen, clo2->xwindow, clo2->drawable, buf, &geom,
+ clo2->closure);
+ clo2->callback = 0;
+ free (clo2);
}
-#ifndef DEBUG
+static void
+osx_load_image_file_async (Screen *screen, Window xwindow, Drawable drawable,
+ const char *dir,
+ void (*callback) (Screen *, Window, Drawable,
+ const char *name,
+ XRectangle *geom,
+ void *closure),
+ void *closure)
+{
+#if 0 /* do it synchronously */
+
+ FILE *pipe = open_image_name_pipe (dir);
+ char buf[10240];
+ *buf = 0;
+ fgets (buf, sizeof(buf)-1, pipe);
+ pclose (pipe);
+
+ /* strip trailing newline */
+ int L = strlen(buf);
+ while (L > 0 && (buf[L-1] == '\r' || buf[L-1] == '\n'))
+ buf[--L] = 0;
+
+ XRectangle geom;
+ if (! osx_load_image_file (screen, xwindow, drawable, buf, &geom)) {
+ /* draw colorbars */
+ abort();
+ }
+ callback (screen, xwindow, drawable, buf, &geom, closure);
+
+#else /* do it asynchronously */
+
+ Display *dpy = DisplayOfScreen (screen);
+ struct pipe_closure *clo2 = (struct pipe_closure *) calloc (1, sizeof(*clo2));
+ clo2->pipe = open_image_name_pipe (dir);
+ clo2->id = XtAppAddInput (XtDisplayToApplicationContext (dpy),
+ fileno (clo2->pipe),
+ (XtPointer) (XtInputReadMask | XtInputExceptMask),
+ pipe_cb, (XtPointer) clo2);
+ clo2->screen = screen;
+ clo2->xwindow = xwindow;
+ clo2->drawable = drawable;
+ clo2->callback = callback;
+ clo2->closure = closure;
+#endif
+}
+
/* Loads an image into the Drawable, returning once the image is loaded.
- When grabbing desktop images, the Window will be unmapped first.
*/
-void
-load_random_image (Screen *screen, Window window, Drawable drawable,
- char **name_ret, XRectangle *geom_ret)
+static void
+load_random_image_1 (Screen *screen, Window window, Drawable drawable,
+ void (*callback) (Screen *, Window, Drawable,
+ const char *name, XRectangle *geom,
+ void *closure),
+ void *closure,
+ char **name_ret,
+ XRectangle *geom_ret)
{
- load_random_image_1 (screen, window, drawable, 0, 0, name_ret, geom_ret);
+ Display *dpy = DisplayOfScreen (screen);
+ XWindowAttributes xgwa;
+ Bool deskp = get_boolean_resource (dpy, "grabDesktopImages", "Boolean");
+ Bool filep = get_boolean_resource (dpy, "chooseRandomImages", "Boolean");
+ const char *dir = 0;
+ Bool done = False;
+ XRectangle geom_ret_2;
+ char *name_ret_2 = 0;
+
+ if (callback) {
+ geom_ret = &geom_ret_2;
+ name_ret = &name_ret_2;
+ }
+
+ XGetWindowAttributes (dpy, window, &xgwa);
+ {
+ Window r;
+ int x, y;
+ unsigned int w, h, bbw, d;
+ XGetGeometry (dpy, drawable, &r, &x, &y, &w, &h, &bbw, &d);
+ xgwa.width = w;
+ xgwa.height = h;
+ }
+
+ if (name_ret)
+ *name_ret = 0;
+
+ if (geom_ret) {
+ geom_ret->x = 0;
+ geom_ret->y = 0;
+ geom_ret->width = xgwa.width;
+ geom_ret->height = xgwa.height;
+ }
+
+ if (filep)
+ dir = get_string_resource (dpy, "imageDirectory", "ImageDirectory");
+
+ if (!dir || !*dir)
+ filep = False;
+
+ if (deskp && filep) {
+ deskp = !(random() & 5); /* if both, desktop 1/5th of the time */
+ filep = !deskp;
+ }
+
+ if (filep && !done) {
+ osx_load_image_file_async (screen, window, drawable, dir,
+ callback, closure);
+ return;
+ }
+
+ if (deskp && !done) {
+ osx_grab_desktop_image (screen, window, drawable);
+ if (name_ret)
+ *name_ret = strdup ("desktop");
+ done = True;
+ }
+
+ if (! done) {
+ draw_colorbars (screen, xgwa.visual, drawable, xgwa.colormap,
+ 0, 0, xgwa.width, xgwa.height);
+ done = True;
+ }
+
+ if (callback) {
+ /* If we got here, we loaded synchronously even though they wanted async.
+ */
+ callback (screen, window, drawable, name_ret_2, &geom_ret_2, closure);
+ }
}
-#else /* DEBUG */
+#endif /* HAVE_COCOA */
-typedef struct {
- char **name_ret;
- Bool done;
-} debug_closure;
+/* Writes the string "Loading..." in the middle of the screen.
+ This will presumably get blown away when the image finally loads,
+ minutes or hours later...
+
+ This is called by load_image_async_simple() but not by load_image_async(),
+ since it is assumed that hacks that are loading more than one image
+ *at one time* will be doing something more clever than just blocking
+ with a blank screen.
+ */
static void
-debug_cb (Screen *screen, Window window, Drawable drawable,
- const char *name, void *closure)
+print_loading_msg (Screen *screen, Window window)
{
- debug_closure *data = (debug_closure *) closure;
- fprintf (stderr, "%s: GRAB DEBUG: callback\n", progname);
- if (data->name_ret)
- *data->name_ret = (name ? strdup (name) : 0);
- data->done = True;
+ Display *dpy = DisplayOfScreen (screen);
+ XWindowAttributes xgwa;
+ XGCValues gcv;
+ XFontStruct *f = 0;
+ GC gc;
+ char *fn = get_string_resource (dpy, "labelFont", "Font");
+ const char *text = "Loading...";
+ int w;
+
+ if (!fn) fn = get_string_resource (dpy, "titleFont", "Font");
+ if (!fn) fn = get_string_resource (dpy, "font", "Font");
+ if (!fn) fn = strdup ("-*-times-bold-r-normal-*-180-*");
+ f = XLoadQueryFont (dpy, fn);
+ if (!f) f = XLoadQueryFont (dpy, "fixed");
+ if (!f) abort();
+ free (fn);
+ fn = 0;
+
+ XGetWindowAttributes (dpy, window, &xgwa);
+ w = XTextWidth (f, text, strlen(text));
+
+ gcv.foreground = get_pixel_resource (dpy, xgwa.colormap,
+ "foreground", "Foreground");
+ gcv.background = get_pixel_resource (dpy, xgwa.colormap,
+ "background", "Background");
+ gcv.font = f->fid;
+ gc = XCreateGC (dpy, window, GCFont | GCForeground | GCBackground, &gcv);
+ XDrawImageString (dpy, window, gc,
+ (xgwa.width - w) / 2,
+ (xgwa.height - (f->ascent + f->descent)) / 2 + f->ascent,
+ text, strlen(text));
+ XFreeFont (dpy, f);
+ XFreeGC (dpy, gc);
+ XSync (dpy, False);
}
+
+/* Loads an image into the Drawable in the background;
+ when the image is fully loaded, runs the callback.
+ When grabbing desktop images, the Window will be unmapped first.
+ */
void
-load_random_image (Screen *screen, Window window, Drawable drawable,
- char **name_ret)
+load_image_async (Screen *screen, Window window, Drawable drawable,
+ void (*callback) (Screen *, Window, Drawable,
+ const char *name, XRectangle *geom,
+ void *closure),
+ void *closure)
{
- debug_closure data;
- data.name_ret = name_ret;
- data.done = False;
- fprintf (stderr, "%s: GRAB DEBUG: forking\n", progname);
- fork_load_random_image (screen, window, drawable, debug_cb, &data);
- while (! data.done)
+ load_random_image_1 (screen, window, drawable, callback, closure, 0, 0);
+}
+
+struct async_load_state {
+ Bool done_p;
+ char *filename;
+ XRectangle geom;
+};
+
+static void
+load_image_async_simple_cb (Screen *screen, Window window, Drawable drawable,
+ const char *name, XRectangle *geom, void *closure)
+{
+ async_load_state *state = (async_load_state *) closure;
+ state->done_p = True;
+ state->filename = (name ? strdup (name) : 0);
+ state->geom = *geom;
+}
+
+async_load_state *
+load_image_async_simple (async_load_state *state,
+ Screen *screen,
+ Window window,
+ Drawable drawable,
+ char **filename_ret,
+ XRectangle *geometry_ret)
+{
+ if (state && state->done_p) /* done! */
{
- fprintf (stderr, "%s: GRAB DEBUG: waiting\n", progname);
- if (XtAppPending (app) & XtIMAlternateInput)
- XtAppProcessEvent (app, XtIMAlternateInput);
- usleep (50000);
+ if (filename_ret)
+ *filename_ret = state->filename;
+ else if (state->filename)
+ free (state->filename);
+
+ if (geometry_ret)
+ *geometry_ret = state->geom;
+
+ free (state);
+ return 0;
+ }
+ else if (! state) /* first time */
+ {
+ state = (async_load_state *) calloc (1, sizeof(*state));
+ state->done_p = False;
+ print_loading_msg (screen, window);
+ load_image_async (screen, window, drawable,
+ load_image_async_simple_cb,
+ state);
+ return state;
}
- fprintf (stderr, "%s: GRAB DEBUG: done\n", progname);
+ else /* still waiting */
+ return state;
}
-
-#endif /* DEBUG */
projects / xscreensaver / blobdiff