First Commit

1 files changed, 692 insertions, 0 deletions

diff --git a/xwinwrap.c b/xwinwrap.c
new file mode 100644
index 0000000..487f58e
--- /dev/null
+++ b/xwinwrap.c
@@ -0,0 +1,692 @@
+#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 <stdbool.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 ATOM(a) XInternAtom(display, #a, False)
+
+Display *display = NULL;
+int display_width;
+int display_height;
+int screen;
+
+typedef enum
+{
+    SHAPE_RECT = 0,
+    SHAPE_CIRCLE,
+    SHAPE_TRIG,
+} win_shape;
+
+struct window {
+    Window root, window, desktop;
+    Drawable drawable;
+    Visual *visual;
+    Colormap colourmap;
+
+    unsigned int width;
+    unsigned int height;
+    int x;
+    int y;
+} window;
+
+bool debug = false;
+
+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 (unsigned int opacity)
+{
+    CARD32 o;
+
+    o = opacity;
+
+    XChangeProperty (display, window.window, ATOM(_NET_WM_WINDOW_OPACITY),
+                     XA_CARDINAL, 32, PropModeReplace,
+                     (unsigned char *) &o, 1);
+}
+
+static void init_x11()
+{
+    display = XOpenDisplay (NULL);
+    if (!display)
+    {
+        fprintf (stderr, NAME": Error: couldn't open display\n");
+        return;
+    }
+    screen = DefaultScreen(display);
+    display_width = DisplayWidth(display, screen);
+    display_height = DisplayHeight(display, screen);
+}
+
+static int get_argb_visual(Visual** visual, int *depth) {
+    XVisualInfo visual_template;
+    XVisualInfo *visual_list;
+    int nxvisuals = 0, i;
+
+    visual_template.screen = screen;
+    visual_list = XGetVisualInfo (display, VisualScreenMask,
+                                  &visual_template, &nxvisuals);
+    for (i = 0; i < nxvisuals; i++) {
+        if (visual_list[i].depth == 32 &&
+                (visual_list[i].red_mask   == 0xff0000 &&
+                 visual_list[i].green_mask == 0x00ff00 &&
+                 visual_list[i].blue_mask  == 0x0000ff)) {
+            *visual = visual_list[i].visual;
+            *depth = visual_list[i].depth;
+            if (debug)
+                fprintf(stderr, "Found ARGB Visual\n");
+            XFree(visual_list);
+            return 1;
+        }
+    }
+    if (debug)
+        fprintf(stderr, "No ARGB Visual found");
+    XFree(visual_list);
+    return 0;
+}
+
+static void sigHandler (int sig)
+{
+    kill (pid, sig);
+}
+
+static void usage (void)
+{
+    fprintf(stderr, "%s \n", NAME);
+    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 \
+            -argb   - RGB\n \
+            -fs     - Full Screen\n \
+            -un     - Undecorated\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 Window find_subwindow(Window win, int w, int h)
+{
+    unsigned int i, j;
+    Window troot, parent, *children;
+    unsigned int n;
+
+    /* search subwindows with same size as display or work area */
+
+    for (i = 0; i < 10; i++) {
+        XQueryTree(display, win, &troot, &parent, &children, &n);
+
+        for (j = 0; j < n; j++) {
+            XWindowAttributes attrs;
+
+            if (XGetWindowAttributes(display, children[j], &attrs)) {
+                /* Window must be mapped and same size as display or
+                 * work space */
+                if (attrs.map_state != 0 && ((attrs.width == display_width
+                                              && attrs.height == display_height)
+                                             || (attrs.width == w && attrs.height == h))) {
+                    win = children[j];
+                    break;
+                }
+            }
+        }
+
+        XFree(children);
+        if (j == n) {
+            break;
+        }
+    }
+
+    return win;
+}
+
+static Window find_desktop_window(Window *p_root, Window *p_desktop)
+{
+    Atom type;
+    int format, i;
+    unsigned long nitems, bytes;
+    unsigned int n;
+    Window root = RootWindow(display, screen);
+    Window win = root;
+    Window troot, parent, *children;
+    unsigned char *buf = NULL;
+
+    if (!p_root || !p_desktop) {
+        return 0;
+    }
+
+    /* some window managers set __SWM_VROOT to some child of root window */
+
+    XQueryTree(display, root, &troot, &parent, &children, &n);
+    for (i = 0; i < (int) n; i++) {
+        if (XGetWindowProperty(display, children[i], ATOM(__SWM_VROOT), 0, 1,
+                               False, XA_WINDOW, &type, &format, &nitems, &bytes, &buf)
+                == Success && type == XA_WINDOW) {
+            win = *(Window *) buf;
+            XFree(buf);
+            XFree(children);
+            if (debug)
+            {
+                fprintf(stderr,
+                        NAME": desktop window (%lx) found from __SWM_VROOT property\n",
+                        win);
+            }
+            fflush(stderr);
+            *p_root = win;
+            *p_desktop = win;
+            return win;
+        }
+
+        if (buf) {
+            XFree(buf);
+            buf = 0;
+        }
+    }
+    XFree(children);
+
+    /* get subwindows from root */
+    win = find_subwindow(root, -1, -1);
+
+    display_width = DisplayWidth(display, screen);
+    display_height = DisplayHeight(display, screen);
+
+    win = find_subwindow(win, display_width, display_height);
+
+    if (buf) {
+        XFree(buf);
+        buf = 0;
+    }
+
+    if (win != root && debug) {
+        fprintf(stderr,
+                NAME": desktop window (%lx) is subwindow of root window (%lx)\n",
+                win, root);
+    } else if (debug) {
+        fprintf(stderr, NAME": desktop window (%lx) is root window\n", win);
+    }
+
+    fflush(stderr);
+
+    *p_root = root;
+    *p_desktop = win;
+
+    return win;
+}
+
+int main(int argc, char **argv)
+{
+    char        widArg[256];
+    char        *widArgv[] = { widArg };
+    char        *endArg = NULL;
+    int         status = 0;
+    unsigned int opacity = OPAQUE;
+
+    int i;
+    bool have_argb_visual = false;
+    bool noInput = false;
+    bool argb = false;
+    bool fullscreen = false;
+    bool noFocus = false;
+    bool override = false;
+    bool undecorated = false;
+    bool sticky = false;
+    bool below = false;
+    bool above = false;
+    bool skip_taskbar = false;
+    bool skip_pager = false;
+
+    win_shape   shape = SHAPE_RECT;
+    Pixmap      mask;
+    GC          mask_gc;
+    XGCValues   xgcv;
+
+    window.width = WIDTH;
+    window.height = HEIGHT;
+
+    for (i = 1; i < argc; i++)
+    {
+        if (strcmp (argv[i], "-g") == 0)
+        {
+            if (++i < argc)
+                XParseGeometry (argv[i], &window.x, &window.y, &window.width, &window.height);
+        }
+        else if (strcmp (argv[i], "-ni") == 0)
+        {
+            noInput = 1;
+        }
+        else if (strcmp (argv[i], "-argb") == 0)
+        {
+            argb = true;
+        }
+        else if (strcmp (argv[i], "-fs") == 0)
+        {
+            fullscreen = 1;
+        }
+        else if (strcmp (argv[i], "-un") == 0)
+        {
+            undecorated = true;
+        }
+        else if (strcmp (argv[i], "-s") == 0)
+        {
+            sticky = true;
+        }
+        else if (strcmp (argv[i], "-st") == 0)
+        {
+            skip_taskbar = true;
+        }
+        else if (strcmp (argv[i], "-sp") == 0)
+        {
+            skip_pager = true;
+        }
+        else if (strcmp (argv[i], "-a") == 0)
+        {
+            above = true;
+        }
+        else if (strcmp (argv[i], "-b") == 0)
+        {
+            below = true;
+        }
+        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 = true;
+        }
+        else if (strcmp (argv[i], "-debug") == 0)
+        {
+            debug = true;
+        }
+        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);
+
+    init_x11();
+    if (!display)
+        return 1;
+
+    if (fullscreen)
+    {
+        window.x = 0;
+        window.y = 0;
+        window.width  = DisplayWidth (display, screen);
+        window.height = DisplayHeight (display, screen);
+    }
+    int depth = 0, flags = CWOverrideRedirect | CWBackingStore;
+    Visual *visual = NULL;
+
+    if (!find_desktop_window(&window.root, &window.desktop)) {
+        fprintf (stderr, NAME": Error: couldn't find desktop window\n");
+        return 1;
+    }
+
+    if (argb && get_argb_visual(&visual, &depth))
+    {
+        have_argb_visual = true;
+        window.visual = visual;
+        window.colourmap = XCreateColormap(display,
+                                           DefaultRootWindow(display), window.visual, AllocNone);
+    }
+    else
+    {
+        window.visual = DefaultVisual(display, screen);
+        window.colourmap = DefaultColormap(display, screen);
+        depth = CopyFromParent;
+        visual = CopyFromParent;
+
+    }
+
+    if (override) {
+        /* An override_redirect True window.
+         * No WM hints or button processing needed. */
+        XSetWindowAttributes attrs = { ParentRelative, 0L, 0, 0L, 0, 0,
+                                       Always, 0L, 0L, False, StructureNotifyMask | ExposureMask, 0L,
+                                       True, 0, 0
+                                     };
+
+        if (have_argb_visual)
+        {
+            attrs.colormap = window.colourmap;
+            flags |= CWBorderPixel | CWColormap;
+        }
+        else
+        {
+            flags |= CWBackPixel;
+        }
+
+        window.window = XCreateWindow(display, window.desktop, window.x,
+                                      window.y, window.width, window.height, 0, depth, InputOutput, visual,
+                                      flags, &attrs);
+        XLowerWindow(display, window.window);
+
+        fprintf(stderr, NAME": window type - override\n");
+        fflush(stderr);
+    }
+    else
+    {
+        XSetWindowAttributes attrs = { ParentRelative, 0L, 0, 0L, 0, 0,
+                                       Always, 0L, 0L, False, StructureNotifyMask | ExposureMask |
+                                       ButtonPressMask | ButtonReleaseMask, 0L, False, 0, 0
+                                     };
+
+        XWMHints wmHint;
+        Atom xa;
+
+        if (have_argb_visual)
+        {
+            attrs.colormap = window.colourmap;
+            flags |= CWBorderPixel | CWColormap;
+        }
+        else
+        {
+            flags |= CWBackPixel;
+        }
+
+        window.window = XCreateWindow(display, window.root, window.x,
+                                      window.y, window.width, window.height, 0, depth, InputOutput, visual,
+                                      flags, &attrs);
+
+        wmHint.flags = InputHint | StateHint;
+        // wmHint.input = undecorated ? False : True;
+        wmHint.input = !noFocus;
+        wmHint.initial_state = NormalState;
+
+        XSetWMProperties(display, window.window, NULL, NULL, argv,
+                         argc, NULL, &wmHint, NULL);
+
+        xa = ATOM(_NET_WM_WINDOW_TYPE);
+
+        Atom prop;
+        prop = ATOM(_NET_WM_WINDOW_TYPE_NORMAL);
+
+        XChangeProperty(display, window.window, xa, XA_ATOM, 32,
+                        PropModeReplace, (unsigned char *) &prop, 1);
+
+        if (undecorated) {
+            xa = ATOM(_MOTIF_WM_HINTS);
+            if (xa != None) {
+                long prop[5] = { 2, 0, 0, 0, 0 };
+                XChangeProperty(display, window.window, xa, xa, 32,
+                                PropModeReplace, (unsigned char *) prop, 5);
+            }
+        }
+
+        /* Below other windows */
+        if (below) {
+
+            xa = ATOM(_WIN_LAYER);
+            if (xa != None) {
+                long prop = 0;
+
+                XChangeProperty(display, window.window, xa, XA_CARDINAL, 32,
+                                PropModeAppend, (unsigned char *) &prop, 1);
+            }
+
+            xa = ATOM(_NET_WM_STATE);
+            if (xa != None) {
+                Atom xa_prop = ATOM(_NET_WM_STATE_BELOW);
+
+                XChangeProperty(display, window.window, xa, XA_ATOM, 32,
+                                PropModeAppend, (unsigned char *) &xa_prop, 1);
+            }
+        }
+
+        /* Above other windows */
+        if (above) {
+
+            xa = ATOM(_WIN_LAYER);
+            if (xa != None) {
+                long prop = 6;
+
+                XChangeProperty(display, window.window, xa, XA_CARDINAL, 32,
+                                PropModeAppend, (unsigned char *) &prop, 1);
+            }
+
+            xa = ATOM(_NET_WM_STATE);
+            if (xa != None) {
+                Atom xa_prop = ATOM(_NET_WM_STATE_ABOVE);
+
+                XChangeProperty(display, window.window, xa, XA_ATOM, 32,
+                                PropModeAppend, (unsigned char *) &xa_prop, 1);
+            }
+        }
+
+        /* Sticky */
+        if (sticky) {
+
+            xa = ATOM(_NET_WM_DESKTOP);
+            if (xa != None) {
+                CARD32 xa_prop = 0xFFFFFFFF;
+
+                XChangeProperty(display, window.window, xa, XA_CARDINAL, 32,
+                                PropModeAppend, (unsigned char *) &xa_prop, 1);
+            }
+
+            xa = ATOM(_NET_WM_STATE);
+            if (xa != None) {
+                Atom xa_prop = ATOM(_NET_WM_STATE_STICKY);
+
+                XChangeProperty(display, window.window, xa, XA_ATOM, 32,
+                                PropModeAppend, (unsigned char *) &xa_prop, 1);
+            }
+        }
+
+        /* Skip taskbar */
+        if (skip_taskbar) {
+
+            xa = ATOM(_NET_WM_STATE);
+            if (xa != None) {
+                Atom xa_prop = ATOM(_NET_WM_STATE_SKIP_TASKBAR);
+
+                XChangeProperty(display, window.window, xa, XA_ATOM, 32,
+                                PropModeAppend, (unsigned char *) &xa_prop, 1);
+            }
+        }
+
+        /* Skip pager */
+        if (skip_pager) {
+
+            xa = ATOM(_NET_WM_STATE);
+            if (xa != None) {
+                Atom xa_prop = ATOM(_NET_WM_STATE_SKIP_PAGER);
+
+                XChangeProperty(display, window.window, xa, XA_ATOM, 32,
+                                PropModeAppend, (unsigned char *) &xa_prop, 1);
+            }
+        }
+    }
+
+    if (opacity != OPAQUE)
+        setWindowOpacity (opacity);
+
+    if (noInput)
+    {
+        Region region;
+
+        region = XCreateRegion ();
+        if (region)
+        {
+            XShapeCombineRegion (display, window.window, ShapeInput, 0, 0, region, ShapeSet);
+            XDestroyRegion (region);
+        }
+    }
+
+    if (shape)
+    {
+        mask = XCreatePixmap(display, window.window, window.width, window.height, 1);
+        mask_gc = XCreateGC(display, mask, 0, &xgcv);
+
+        switch (shape)
+        {
+        //Nothing special to be done if it's a rectangle
+        case SHAPE_CIRCLE:
+            /* fill mask */
+            XSetForeground(display, mask_gc, 0);
+            XFillRectangle(display, mask, mask_gc, 0, 0, window.width, window.height);
+
+            XSetForeground(display, mask_gc, 1);
+            XFillArc(display, mask, mask_gc, 0, 0, window.width, window.height, 0, 23040);
+            break;
+
+        case SHAPE_TRIG:
+        {
+            XPoint points[3] = { {0, window.height},
+                {window.width / 2, 0},
+                {window.width, window.height}
+            };
+
+            XSetForeground(display, mask_gc, 0);
+            XFillRectangle(display, mask, mask_gc, 0, 0, window.width, window.height);
+
+            XSetForeground(display, mask_gc, 1);
+            XFillPolygon(display, mask, mask_gc, points, 3, Complex, CoordModeOrigin);
+        }
+
+        break;
+
+        default:
+            break;
+
+        }
+        /* combine */
+        XShapeCombineMask(display, window.window, ShapeBounding, 0, 0, mask, ShapeSet);
+    }
+
+
+
+    XMapWindow(display, window.window);
+
+    XSync (display, window.window);
+
+    sprintf (widArg, "0x%x", (int) window.window);
+
+    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 (display, window.window);
+    XCloseDisplay (display);
+
+
+    return 0;
+}