Пытаюсь сделать видео в качестве обоев рабочего стола.
Скачал xwinwrap, запускаю, а кино показывает не на основном мониторе, а на телевизоре.
Скачал исходник и закомментарил одну строку в нем:
// XSetWMProperties (dpy, win, NULL, NULL, argv, argc, &xsh, &xwmh, NULL);
Кино стало показываться на основном экране.
А вопросы у меня такие (С и разработка в иксах - ЦПШ со словарем):
1. Что я сделал, почему такой кардинальный результат эта строчка дает?
2. Как правильно управлять выводом на какой монитор повесить кино?
Исходник маленький, приведу его полностью.
Код:
/*
* Copyright Вc 2005 Novell, Inc.
*
* 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, and that the name of
* Novell, Inc. not be used in advertising or publicity pertaining to
* distribution of the software without specific, written prior permission.
* Novell, Inc. makes no representations about the suitability of this
* software for any purpose. It is provided "as is" without express or
* implied warranty.
*
* NOVELL, INC. DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN
* NO EVENT SHALL NOVELL, INC. BE LIABLE FOR ANY SPECIAL, INDIRECT OR
* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS
* OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT,
* NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION
* WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*
* Author: David Reveman <davidr@novell.com>
*/
#include <X11/Xlib.h>
#include <X11/Xutil.h>
#include <X11/Xatom.h>
#include <X11/Xproto.h>
#include <X11/extensions/shape.h>
#include <X11/extensions/Xrender.h>
#include <stdlib.h>
#include <string.h>
#include <signal.h>
#include <stdio.h>
#include <unistd.h>
#include <sys/wait.h>
#include <sys/stat.h>
#include <sys/types.h>
#define WIDTH 512
#define HEIGHT 384
#define OPAQUE 0xffffffff
#define NAME "xwinwrap"
static pid_t pid = 0;
static char **childArgv = 0;
static int nChildArgv = 0;
static int
addArguments (char **argv,
int n)
{
char **newArgv;
int i;
newArgv = realloc (childArgv, sizeof (char *) * (nChildArgv + n));
if (!newArgv)
return 0;
for (i = 0; i < n; i++)
newArgv[nChildArgv + i] = argv[i];
childArgv = newArgv;
nChildArgv += n;
return n;
}
static void
setWindowOpacity (Display *dpy,
Window win,
unsigned int opacity)
{
CARD32 o;
o = opacity;
XChangeProperty (dpy, win, XInternAtom (dpy, "_NET_WM_WINDOW_OPACITY", 0),
XA_CARDINAL, 32, PropModeReplace,
(unsigned char *) &o, 1);
}
static Visual *
findArgbVisual (Display *dpy, int scr)
{
XVisualInfo *xvi;
XVisualInfo template;
int nvi;
int i;
XRenderPictFormat *format;
Visual *visual;
template.screen = scr;
template.depth = 32;
template.class = TrueColor;
xvi = XGetVisualInfo (dpy,
VisualScreenMask |
VisualDepthMask |
VisualClassMask,
&template,
&nvi);
if (!xvi)
return 0;
visual = 0;
for (i = 0; i < nvi; i++)
{
format = XRenderFindVisualFormat (dpy, xvi[i].visual);
if (format->type == PictTypeDirect && format->direct.alphaMask)
{
visual = xvi[i].visual;
break;
}
}
XFree (xvi);
return visual;
}
static void
sigHandler (int sig)
{
kill (pid, sig);
}
static void
usage (void)
{
fprintf (stderr, "Usage: %s [-g] [-ni] [-argb] [-fs] [-s] [-st] [-sp] [-a] "
"[-b] [-nf]\n [-o OPACITY] -- COMMAND ARG1...\n", NAME);
}
int
main (int argc, char **argv)
{
Display *dpy;
Window win;
Window root;
int screen;
XSizeHints xsh;
XWMHints xwmh;
char widArg[256];
char *widArgv[] = { widArg };
char *endArg = NULL;
int i;
int status = 0;
unsigned int opacity = OPAQUE;
int x = 0;
int y = 0;
unsigned int width = WIDTH;
unsigned int height = HEIGHT;
int argb = 0;
int fullscreen = 0;
int noInput = 0;
int noFocus = 0;
Atom state[256];
int nState = 0;
dpy = XOpenDisplay (NULL);
if (!dpy)
{
fprintf (stderr, "%s: Error: couldn't open display\n", argv[0]);
return 1;
}
screen = DefaultScreen (dpy);
root = RootWindow (dpy, screen);
for (i = 1; i < argc; i++)
{
if (strcmp (argv[i], "-g") == 0)
{
if (++i < argc)
XParseGeometry (argv[i], &x, &y, &width, &height);
}
else if (strcmp (argv[i], "-ni") == 0)
{
noInput = 1;
}
else if (strcmp (argv[i], "-argb") == 0)
{
argb = 1;
}
else if (strcmp (argv[i], "-fs") == 0)
{
state[nState++] = XInternAtom (dpy, "_NET_WM_STATE_FULLSCREEN", 0);
fullscreen = 1;
}
else if (strcmp (argv[i], "-s") == 0)
{
state[nState++] = XInternAtom (dpy, "_NET_WM_STATE_STICKY", 0);
}
else if (strcmp (argv[i], "-st") == 0)
{
state[nState++] = XInternAtom (dpy, "_NET_WM_STATE_SKIP_TASKBAR", 0);
}
else if (strcmp (argv[i], "-sp") == 0)
{
state[nState++] = XInternAtom (dpy, "_NET_WM_STATE_SKIP_PAGER", 0);
}
else if (strcmp (argv[i], "-a") == 0)
{
state[nState++] = XInternAtom (dpy, "_NET_WM_STATE_ABOVE", 0);
}
else if (strcmp (argv[i], "-b") == 0)
{
state[nState++] = XInternAtom (dpy, "_NET_WM_STATE_BELOW", 0);
}
else if (strcmp (argv[i], "-nf") == 0)
{
noFocus = 1;
}
else if (strcmp (argv[i], "-o") == 0)
{
if (++i < argc)
opacity = (unsigned int) (atof (argv[i]) * OPAQUE);
}
else if (strcmp (argv[i], "--") == 0)
{
break;
}
else
{
usage ();
return 1;
}
}
for (i = i + 1; i < argc; i++)
{
if (strcmp (argv[i], "WID") == 0)
addArguments (widArgv, 1);
else
addArguments (&argv[i], 1);
}
if (!nChildArgv)
{
fprintf (stderr, "%s: Error: couldn't create command line\n", argv[0]);
usage ();
return 1;
}
addArguments (&endArg, 1);
if (fullscreen)
{
xsh.flags = PSize | PPosition;
xsh.width = DisplayWidth (dpy, screen);
xsh.height = DisplayHeight (dpy, screen);
}
else
{
xsh.flags = PSize;
xsh.width = width;
xsh.height = height;
}
xwmh.flags = InputHint;
xwmh.input = !noFocus;
if (argb)
{
XSetWindowAttributes attr;
Visual *visual;
visual = findArgbVisual (dpy, screen);
if (!visual)
{
fprintf (stderr, "%s: Error: couldn't find argb visual\n", argv[0]);
return 1;
}
attr.background_pixel = 0;
attr.border_pixel = 0;
attr.colormap = XCreateColormap (dpy, root, visual, AllocNone);
win = XCreateWindow (dpy, root, 0, 0, xsh.width, xsh.height, 0,
32, InputOutput, visual,
CWBackPixel | CWBorderPixel | CWColormap, &attr);
}
else
{
win = XCreateWindow (dpy, root, 0, 0, xsh.width, xsh.height, 0,
CopyFromParent, InputOutput, CopyFromParent,
0, NULL);
}
// XSetWMProperties (dpy, win, NULL, NULL, argv, argc, &xsh, &xwmh, NULL);
if (opacity != OPAQUE)
setWindowOpacity (dpy, win, opacity);
if (noInput)
{
Region region;
region = XCreateRegion ();
if (region)
{
XShapeCombineRegion (dpy, win, ShapeInput, 0, 0, region, ShapeSet);
XDestroyRegion (region);
}
}
if (nState)
XChangeProperty (dpy, win, XInternAtom (dpy, "_NET_WM_STATE", 0),
XA_ATOM, 32, PropModeReplace,
(unsigned char *) state, nState);
XMapWindow (dpy, win);
XSync (dpy, win);
sprintf (widArg, "0x%x", (int) win);
pid = fork ();
switch (pid) {
case -1:
perror ("fork");
return 1;
case 0:
execvp (childArgv[0], childArgv);
perror (childArgv[0]);
exit (2);
break;
default:
break;
}
signal (SIGTERM, sigHandler);
signal (SIGINT, sigHandler);
for (;;)
{
if (waitpid (pid, &status, 0) != -1)
{
if (WIFEXITED (status))
fprintf (stderr, "%s died, exit status %d\n", childArgv[0],
WEXITSTATUS (status));
break;
}
}
XDestroyWindow (dpy, win);
XCloseDisplay (dpy);
return 0;
}
