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GWinWrap/src/versions/0.0.2/XWinWrap/xwinwrap.c

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/*
* Copyright © 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>
*/
/*
* Modified by: Shantanu Goel
* Tech Blog: http://tech.shantanugoel.com
* Blog: http://blog.shantanugoel.com
* Home Page: http://tech.shantanugoel.com/projects/linux/shantz-xwinwrap
*
* Changelog:
* 15-Jan-09: 1. Fixed the bug where XFetchName returning a NULL for "name"
* resulted in a crash.
* 2. Provided an option to specify the desktop window name.
* 3. Added debug messages
*
* 24-Aug-08: 1. Fixed the geometry option (-g) so that it works
* 2. Added override option (-ov), for seamless integration with
* desktop like a background in non-fullscreen modes
* 3. Added shape option (-sh), to create non-rectangular windows.
* Currently supporting circlular and triangular windows
*/
/*
* Modified by: Maxim Stewart
* Tech Blog: https://www.itdominator.com/
*
* Changelog:
* 3-March-19: 1. Cleaned up code formatting.
* 2. Removed unused DEBUG_MSG reference.
* 3. Moved functions to a more reasonable order.
* 4. Compile dev library list 32 & 64 bit:
* # 32
* sudo apt install libxext-dev:i386 libxrender-dev:i386 libc6-dev-i386
*
* # 64
* sudo apt install libxext-dev libxrender-dev libc6-dev
*/
#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"
#define VERSION "0.3"
#define DESKTOP_WINDOW_NAME_MAX_SIZE 25
#define DEFAULT_DESKTOP_WINDOW_NAME "Desktop"
#define DEBUG_MSG(x) if(debug) { fprintf(stderr, x); }
typedef enum {
SHAPE_RECT = 0,
SHAPE_CIRCLE,
SHAPE_TRIG,
} win_shape;
static pid_t pid = 0;
static char **childArgv = 0;
static int nChildArgv = 0;
int debug = 0;
char desktop_window_name[DESKTOP_WINDOW_NAME_MAX_SIZE];
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 Window find_desktop_window(Display *display, int screen,
Window *root, Window *p_desktop) {
int i;
unsigned int n;
Window win = *root;
Window troot, parent, *children;
char *name;
int status;
int width = DisplayWidth(display, screen);
int height = DisplayHeight(display, screen);
XWindowAttributes attrs;
XQueryTree(display, *root, &troot, &parent, &children, &n);
for (i = 0; i < (int) n; i++) {
status = XFetchName(display, children[i], &name);
status |= XGetWindowAttributes(display, children[i], &attrs);
if ((status != 0) && (NULL != name)) {
if( (attrs.map_state != 0) && (attrs.width == width) &&
(attrs.height == height) && (!strcmp(name, desktop_window_name)) ) {
win = children[i];
XFree(children);
XFree(name);
*p_desktop = win;
return win;
}
if(name)
XFree(name);
}
}
DEBUG_MSG("Desktop Window Not found\n");
return 0;
}
static void usage (void) {
fprintf(stderr, "%s v%s- Modified by Shantanu Goel. Visit http://tech.shantanugoel.com for updates, queries and feature requests\n", NAME, VERSION);
fprintf (stderr, "\nUsage: %s [-g {w}x{h}+{x}+{y}] [-ni] [-argb] [-fs] [-s] [-st] [-sp] [-a] "
"[-b] [-nf] [-o OPACITY] [-sh SHAPE] [-ov]-- COMMAND ARG1...\n", NAME);
fprintf (stderr, "Options:\n \
-g - Specify Geometry (w=width, h=height, x=x-coord, y=y-coord. ex: -g 640x480+100+100)\n \
-ni - Ignore Input\n \
-d - Desktop Window Hack. Provide name of the \"Desktop\" window as parameter \
-argb - RGB\n \
-fs - Full Screen\n \
-s - Sticky\n \
-st - Skip Taskbar\n \
-sp - Skip Pager\n \
-a - Above\n \
-b - Below\n \
-nf - No Focus\n \
-o - Opacity value between 0 to 1 (ex: -o 0.20)\n \
-sh - Shape of window (choose between rectangle, circle or triangle. Default is rectangle)\n \
-ov - Set override_redirect flag (For seamless desktop background integration in non-fullscreenmode)\n \
-debug - Enable debug messages\n");
}
static void sigHandler (int sig) { kill(pid, sig); }
int main (int argc, char **argv) {
Display *dpy;
Window win;
Window root;
Window p_desktop = 0;
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;
int override = 0;
win_shape shape = SHAPE_RECT;
Pixmap mask;
GC mask_gc;
XGCValues xgcv;
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);
strcpy(desktop_window_name, DEFAULT_DESKTOP_WINDOW_NAME);
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], "-d") == 0) {
++i;
strcpy(desktop_window_name, argv[i]);
} 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], "-sh") == 0) {
if (++i < argc) {
if(strcasecmp(argv[i], "circle") == 0) {
shape = SHAPE_CIRCLE;
} else if(strcasecmp(argv[i], "triangle") == 0) {
shape = SHAPE_TRIG;
}
}
} else if (strcmp(argv[i], "-ov") == 0) {
override = 1;
} else if (strcmp(argv[i], "-debug") == 0) {
debug = 1;
} 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 {
XSetWindowAttributes attr;
attr.override_redirect = override;
if( override && find_desktop_window(dpy, screen, &root, &p_desktop) ) {
win = XCreateWindow (dpy, p_desktop, x, y, xsh.width, xsh.height, 0,
CopyFromParent, InputOutput, CopyFromParent,
CWOverrideRedirect, &attr);
} else {
win = XCreateWindow (dpy, root, x, y, xsh.width, xsh.height, 0,
CopyFromParent, InputOutput, CopyFromParent,
CWOverrideRedirect, &attr);
}
}
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);
if (shape) {
mask = XCreatePixmap(dpy, win, width, height, 1);
mask_gc = XCreateGC(dpy, mask, 0, &xgcv);
switch(shape) {
//Nothing special to be done if it's a rectangle
case SHAPE_CIRCLE:
/* fill mask */
XSetForeground(dpy, mask_gc, 0);
XFillRectangle(dpy, mask, mask_gc, 0, 0, width, height);
XSetForeground(dpy, mask_gc, 1);
XFillArc(dpy, mask, mask_gc, 0, 0, width, height, 0, 23040);
break;
case SHAPE_TRIG:
{
XPoint points[3] = { {0, height},
{width/2, 0},
{width, height} };
XSetForeground(dpy, mask_gc, 0);
XFillRectangle(dpy, mask, mask_gc, 0, 0, width, height);
XSetForeground(dpy, mask_gc, 1);
XFillPolygon(dpy, mask, mask_gc, points, 3, Complex, CoordModeOrigin);
}
break;
default:
break;
}
/* combine */
XShapeCombineMask(dpy, win, ShapeBounding, 0, 0, mask, ShapeSet);
}
XMapWindow (dpy, win);
if(p_desktop == 0)
XLowerWindow(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;
}
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