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Add support for CM_TRANSLUCENT property. 

reviewed by: Keith Packard <keithp@keithp.com>
This commit is contained in:
Keith Packard 2003-11-24 17:11:00 +00:00
parent df3dc087f8
commit 0963afc29c
2 changed files with 147 additions and 9 deletions
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8
ChangeLog
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@ -1,3 +1,11 @@
2003-11-24 Matthew Hawn <hawnpawn@yahoo.com>
reviewed by: Keith Packard <keithp@keithp.com>
* xcompmgr.c: (map_win), (unmap_win), (get_trans_prop),
(determine_mode), (add_win), (main):
Add support for CM_TRANSLUCENT property.
2003-11-23 Keith Packard <keithp@keithp.com>
* xcompmgr.c: (make_shadow), (root_tile), (win_extents),

148
xcompmgr.c
View File

@ -22,6 +22,12 @@
* PERFORMANCE OF THIS SOFTWARE.
*/
/* Modified by Matthew Hawn. I don't know what to say here so follow what it
says above. Not that I can really do anything about it
*/
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
@ -74,6 +80,15 @@ Picture blackPicture;
Picture rootTile;
XserverRegion allDamage;
int root_height, root_width;
/* find these once and be done with it */
Atom transPropAtom;
Atom intAtom;
/* translucency property name */
#define TRANS_PROP "CM_TRANSLUCENCY"
conv *gaussianMap;
#define WINDOW_SOLID 0
@ -598,6 +613,10 @@ map_win (Display *dpy, Window id, unsigned long sequence)
if (!w)
return;
w->a.map_state = IsViewable;
/* make sure we know if property was changed */
XSelectInput(dpy, id, PropertyChangeMask);
w->damaged = 0;
}
@ -615,6 +634,96 @@ unmap_win (Display *dpy, Window id)
add_damage (dpy, w->extents); /* destroys region */
w->extents = None;
}
/* don't care about properties anymore */
XSelectInput(dpy, id, 0);
}
/* Get the translucency prop from window
not found: -1
otherwise the value
*/
static int
get_trans_prop(Display *dpy, win *w)
{
Atom actual;
int format;
unsigned long n, left;
char *data;
XGetWindowProperty(dpy, w->id, transPropAtom, 0L, 1L, False, intAtom, &actual, &format,
&n, &left, (unsigned char **) &data);
if (data != None)
{
int i = (int) *data;
XFree( (void *) data);
return i;
}
return -1;
}
/* determine mode for window all in one place.
Future might check for menu flag and other cool things
*/
static int
determine_mode(Display *dpy, win *w)
{
int mode;
/* if trans prop == -1 fall back on previous tests*/
int p = get_trans_prop(dpy, w);
if ( p != -1 )
{
if (p > 0)
{
/* don't really care about the value as long as > 0 */
mode = WINDOW_TRANS;
}
else
{
mode = WINDOW_SOLID;
}
}
else
{
XRenderPictFormat *format;
if (w->a.class == InputOnly)
{
format = 0;
}
else
{
format = XRenderFindVisualFormat (dpy, w->a.visual);
}
if (format && format->type == PictTypeDirect && format->direct.alphaMask)
{
mode = WINDOW_ARGB;
}
else if (w->a.override_redirect)
{
/* changed this as a lot of window managers set this for all top
level windows */
mode = WINDOW_SOLID;
}
else
{
mode = WINDOW_SOLID;
}
}
return mode;
}
static void
@ -669,12 +778,11 @@ add_win (Display *dpy, Window id, Window prev)
new->shadow_height = 0;
new->borderSize = None;
new->extents = None;
if (format && format->type == PictTypeDirect && format->direct.alphaMask)
new->mode = WINDOW_ARGB;
else if (new->a.override_redirect)
new->mode = WINDOW_TRANS;
else
new->mode = WINDOW_SOLID;
/* moved mode setting to one place */
new->mode = determine_mode(dpy, new);
new->next = *p;
*p = new;
if (new->a.map_state == IsViewable)
@ -940,6 +1048,11 @@ main (int argc, char **argv)
XSetErrorHandler (error);
scr = DefaultScreen (dpy);
root = RootWindow (dpy, scr);
/* get atoms */
transPropAtom = XInternAtom(dpy, TRANS_PROP, False);
intAtom = XInternAtom(dpy, "INTEGER", True);
pa.subwindow_mode = IncludeInferiors;
gaussianMap = make_gaussian_map(dpy, SHADOW_RADIUS);
@ -953,10 +1066,10 @@ main (int argc, char **argv)
c.red = c.green = c.blue = 0;
c.alpha = 0xc0c0;
XRenderFillRectangle (dpy, PictOpSrc, transPicture, &c, 0, 0, 1, 1);
root_width = DisplayWidth (dpy, scr);
root_height = DisplayHeight (dpy, scr);
rootPicture = XRenderCreatePicture (dpy, root,
XRenderFindVisualFormat (dpy,
DefaultVisual (dpy, scr)),
@ -1008,7 +1121,7 @@ main (int argc, char **argv)
#if INTERVAL
int busy_start = 0;
#endif
/* dump_wins (); */
/* dump_wins (); */
do {
XNextEvent (dpy, &ev);
#if INTERVAL
@ -1089,6 +1202,23 @@ main (int argc, char **argv)
}
}
}
/* check if Trans property was changed */
if (ev.xproperty.atom == transPropAtom)
{
/* reset mode and redraw window */
win * w = find_win(dpy, ev.xproperty.window);
if (w)
{
w->mode = determine_mode(dpy, w);
if (w->extents)
{
XserverRegion damage;
damage = XFixesCreateRegion (dpy, 0, 0);
XFixesCopyRegion (dpy, damage, w->extents);
add_damage (dpy, damage);
}
}
}
break;
default:
if (ev.type == damage_event + XDamageNotify)