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-rw-r--r--kwin/kompmgr/kompmgr.c73
1 files changed, 73 insertions, 0 deletions
diff --git a/kwin/kompmgr/kompmgr.c b/kwin/kompmgr/kompmgr.c
index 910622d73..ad0d469a0 100644
--- a/kwin/kompmgr/kompmgr.c
+++ b/kwin/kompmgr/kompmgr.c
@@ -129,6 +129,9 @@ typedef struct _win {
/* for drawing translucent windows */
XserverRegion borderClip;
struct _win *prev_trans;
+
+ /* setting whether a window will be transparent to the desktop or the windows below it */
+ Bool show_root_tile;
} win;
typedef struct _conv {
@@ -198,6 +201,7 @@ Atom winUtilAtom;
Atom winSplashAtom;
Atom winDialogAtom;
Atom winNormalAtom;
+Atom winTDETTDAtom;
/* opacity property name; sometime soon I'll write up an EWMH spec for it */
#define OPACITY_PROP "_KDE_WM_WINDOW_OPACITY"
@@ -1463,6 +1467,17 @@ paint_all (Display *dpy, XserverRegion region)
hei = w->a.height;
#endif
set_ignore (dpy, NextRequest (dpy));
+ /* Here we redraw the background of the transparent window if we want
+ to do anything special (i.e. anything other than showing the
+ windows and desktop prestacked behind of the window).
+ For example, if you want to blur the background or show another
+ background pixmap entirely here is the place to do it; simply
+ draw the new background onto rootBuffer before continuing! */
+ if (w->show_root_tile == True) {
+ XRenderComposite (dpy, PictOpSrc, rootTile, None, rootBuffer,
+ x, y, x, y,
+ x, y, wid, hei);
+ }
XRenderComposite (dpy, PictOpOver, w->picture, w->alphaPict, rootBuffer,
0, 0, 0, 0,
x, y, wid, hei);
@@ -1865,6 +1880,28 @@ damage_tqshape(Display *dpy, win *w, XRectangle *tqshape_damage)
}
#endif
+static Bool
+get_window_transparent_to_desktop(Display * dpy, Window w)
+{
+ Atom actual;
+ int format;
+ unsigned long n, left;
+
+ unsigned char *data;
+ int result = XGetWindowProperty (dpy, w, winTDETTDAtom, 0L, 1L, False,
+ XA_ATOM, &actual, &format,
+ &n, &left, &data);
+
+ if (result == Success && data != None && format == 32 )
+ {
+ Atom a;
+ a = *(long*)data;
+ XFree ( (void *) data);
+ return True;
+ }
+ return False;
+}
+
/* determine mode for window all in one place.
Future might check for menu flag and other cool things
*/
@@ -1942,6 +1979,40 @@ determine_mode(Display *dpy, win *w)
}
}
+static Bool
+determine_window_transparent_to_desktop (Display *dpy, Window w)
+{
+ Window root_return, parent_return;
+ Window *children = NULL;
+ unsigned int nchildren, i;
+ Bool type;
+
+ type = get_window_transparent_to_desktop (dpy, w);
+ if (type == True)
+ return True;
+
+ if (!XQueryTree (dpy, w, &root_return, &parent_return, &children,
+ &nchildren))
+ {
+ /* XQueryTree failed. */
+ if (children)
+ XFree ((void *)children);
+ return winNormalAtom;
+ }
+
+ for (i = 0;i < nchildren;i++)
+ {
+ type = determine_window_transparent_to_desktop (dpy, children[i]);
+ if (type == True)
+ return True;
+ }
+
+ if (children)
+ XFree ((void *)children);
+
+ return False;
+}
+
static Atom
determine_wintype (Display *dpy, Window w)
{
@@ -2031,6 +2102,7 @@ add_win (Display *dpy, Window id, Window prev)
new->opacity = OPAQUE;
new->shadowSize = 100;
new->decoHash = 0;
+ new->show_root_tile = determine_window_transparent_to_desktop(dpy, id);
new->borderClip = None;
new->prev_trans = 0;
@@ -2873,6 +2945,7 @@ main (int argc, char **argv)
winSplashAtom = XInternAtom (dpy, "_NET_WM_WINDOW_TYPE_SPLASH", False);
winDialogAtom = XInternAtom (dpy, "_NET_WM_WINDOW_TYPE_DIALOG", False);
winNormalAtom = XInternAtom (dpy, "_NET_WM_WINDOW_TYPE_NORMAL", False);
+ winTDETTDAtom = XInternAtom (dpy, "_KDE_TRANSPARENT_TO_DESKTOP", False);
pa.subwindow_mode = IncludeInferiors;