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Add window_opacity_get_from_reply() 

Signed-off-by: Uli Schlachter <psychon@znc.in>
This commit is contained in:
Uli Schlachter 2009-05-25 13:39:58 +02:00 committed by Julien Danjou
parent 6b5e5f352c
commit b2ad584c7b
2 changed files with 14 additions and 3 deletions
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16
window.c
View File

@ -116,6 +116,8 @@ window_buttons_grab(xcb_window_t win, button_array_t *buttons)
double
window_opacity_get(xcb_window_t win)
{
double ret;
xcb_get_property_cookie_t prop_c =
xcb_get_property_unchecked(globalconf.connection, false, win,
_NET_WM_WINDOW_OPACITY, CARDINAL, 0L, 1L);
@ -123,15 +125,23 @@ window_opacity_get(xcb_window_t win)
xcb_get_property_reply_t *prop_r =
xcb_get_property_reply(globalconf.connection, prop_c, NULL);
ret = window_opacity_get_from_reply(prop_r);
p_delete(&prop_r);
return ret;
}
/** Get the opacity of a window.
* \param A reply to a get property request for _NET_WM_WINDOW_OPACITY.
* \return The opacity, between 0 and 1.
*/
double window_opacity_get_from_reply(xcb_get_property_reply_t *prop_r)
{
if(prop_r && prop_r->value_len && prop_r->format == 32)
{
uint32_t value = *(uint32_t *) xcb_get_property_value(prop_r);
p_delete(&prop_r);
return (double) value / (double) 0xffffffff;
}
p_delete(&prop_r);
return -1;
}

1
window.h
View File

@ -30,6 +30,7 @@ uint32_t window_state_get_reply(xcb_get_property_cookie_t);
void window_configure(xcb_window_t, area_t, int);
void window_buttons_grab(xcb_window_t, button_array_t *);
double window_opacity_get(xcb_window_t);
double window_opacity_get_from_reply(xcb_get_property_reply_t *);
void window_opacity_set(xcb_window_t, double);
void window_grabbuttons(xcb_window_t, xcb_window_t, button_array_t *);
void window_takefocus(xcb_window_t);