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Detect root pattern with undocumented _XROOTPMAP_ID property

This commit is contained in:
Keith Packard 2003-11-10 02:03:26 +00:00
parent d98b963d75
commit e142128dde
2 changed files with 54 additions and 5 deletions
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5
ChangeLog
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@ -1,3 +1,8 @@
2003-11-09 Keith Packard <keithp@keithp.com>
* xcompmgr.c: (root_tile), (paint_root):
Detect root pattern with undocumented _XROOTPMAP_ID property
2003-11-09 Keith Packard <keithp@keithp.com>
* Makefile:

52
xcompmgr.c
View File

@ -35,6 +35,7 @@ int scr;
Window root;
Picture rootPicture;
Picture transPicture;
Picture rootTile;
XserverRegion allDamage;
#define WINDOW_PLAIN 0
@ -285,15 +286,58 @@ find_win (Display *dpy, Window id)
return 0;
}
void
paint_root (Display *dpy)
Picture
root_tile (Display *dpy)
{
Picture picture;
Atom actual_type;
Pixmap pixmap;
int actual_format;
unsigned long nitems;
unsigned long bytes_after;
unsigned char *prop;
Bool fill;
XRenderPictureAttributes pa;
if (XGetWindowProperty (dpy, root, XInternAtom (dpy, "_XROOTPMAP_ID", False),
0, 4, False, AnyPropertyType,
&actual_type, &actual_format, &nitems, &bytes_after, &prop) == Success)
{
memcpy (&pixmap, prop, 4);
XFree (prop);
fill = False;
}
else
{
pixmap = XCreatePixmap (dpy, root, 1, 1, DefaultDepth (dpy, scr));
fill = True;
}
pa.repeat = True;
picture = XRenderCreatePicture (dpy, pixmap,
XRenderFindVisualFormat (dpy,
DefaultVisual (dpy, scr)),
CPRepeat, &pa);
if (fill)
{
XRenderColor c;
c.red = c.green = c.blue = 0x8080;
c.alpha = 0xffff;
XRenderFillRectangle (dpy, PictOpSrc, rootPicture, &c,
0, 0, 32767, 32767);
XRenderFillRectangle (dpy, PictOpSrc, picture, &c,
0, 0, 1, 1);
}
return picture;
}
void
paint_root (Display *dpy)
{
if (!rootTile)
rootTile = root_tile (dpy);
XRenderComposite (dpy, PictOpSrc,
rootTile, None, rootPicture,
0, 0, 0, 0, 0, 0, 32767, 32767);
}
XserverRegion