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Improvement: Support reading _NET_WM_OPACITY from client windows

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- Some WMs don't respect Keith Packard's proposal of
  _NET_WM_WINDOW_OPACITY, and do not copy _NET_WM_OPACITY attribute of a
  client window to its frame windows, thus cause opacity set by
  non-override-redirect windows to have no effect. This commit adds
  support for reading _NET_WM_OPACITY from client windows if running
  with --detect-client-opacity. Thanks to pvanek for reporting.

- Change Makefile logic to determine options from 3 variables
  (NO_LIBCONFIG, NO_REGEX_PCRE, NO_REGEX_PCRE_JIT) instead of CFG to
  ensure compatibility when we add new options. CFG variable is no
  longer been respected.
This commit is contained in:
Richard Grenville
2012-10-03 21:13:34 +08:00
parent b8f3d22a32
commit 1306b1591f
4 changed files with 80 additions and 26 deletions
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11
src/compton.h
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@ -198,6 +198,10 @@ typedef struct _win {
opacity_t opacity_cur;
/// Cached value of opacity window attribute.
opacity_t opacity_prop;
/// Cached value of opacity window attribute on client window. For
/// broken window managers not transferring client window's
/// _NET_WM_OPACITY value
opacity_t opacity_prop_client;
/// Alpha mask Picture to render window with opacity.
Picture alpha_pict;
@ -302,7 +306,12 @@ typedef struct _options {
/// Whether inactive_opacity overrides the opacity set by window
/// attributes.
Bool inactive_opacity_override;
/// Frame opacity. Relative to window opacity, also affects shadow
/// opacity.
double frame_opacity;
/// Whether to detect _NET_WM_OPACITY on client windows. Used on window
/// managers that don't pass _NET_WM_OPACITY to frame windows.
Bool detect_client_opacity;
/// How much to dim an inactive window. 0.0 - 1.0, 0 to disable.
double inactive_dim;
@ -780,7 +789,7 @@ static void
unmap_win(Display *dpy, Window id, Bool fade);
static opacity_t
get_opacity_prop(Display *dpy, win *w, opacity_t def);
wid_get_opacity_prop(Display *dpy, Window wid, opacity_t def);
static double
get_opacity_percent(Display *dpy, win *w);