See chjj's comments on issue #39:
https://github.com/chjj/compton/issues/39#issuecomment-8533360
- Add a switch --mark-wmwin-focused that try to detect WM windows and
mark them active.
- Fix a bug that causes BadDrawable, etc. if a window is mapped then
immediately unmapped.
- Fix a bug in determine_evmask().
- Add a debug option DEBUG_CLIENTWIN.
- Force window repaint on window frame extent change.
- Code cleanup.
- Change fading mechanism for better modularity. Remove fade queue and
use members in struct _win to record fading data. In contrast to
previous commits, this one actually could make the program slower (but
very slightly, hardly noticeable if your CPU is anywhere close to AMD
K7). As this commit changes lots of things, bugs are to be expected.
- Currently -F does not do its job. -f actually equals -fF. (While in
the past -F equals nothing and -f is just -f.) A fix will be made
soon. I suppose it isn't hard.
- Add a preprocessor function paint_preprocess() and move all
preprocessing code in paint_all() to it.
- Add window flag support but currently unused.
- Add DamageNotify handling to ev_window().
- I'm considering removing HAS_NAME_WINDOW_PIXMAP = 0 support as I
couldn't see what it is good for. Nor do I know what CAN_DO_USABLE
does. Basically all my changes ignore these cases.
- Defer shadow picture generation to minimize interactions with X,
hoping to boost performance.
- Fix a rendering issue caused by clip_changed in configure_win().
Remove clip_changed altogether.
- Split generation of shadow picture from calculating its geometry.
- Cache width/height including borders in struct _win as it's frequently
used.
- Now compton paints windows from the lowest to the highest. Warning:
I'm not completely certain that the change won't introduce unexpected
glitches. This commit may be revoked in the future.
- Remove w->border_clip since it's no longer needed.
- Correct a mistake in find_toplevel2(). (clang --analyze found it out.)
- Change "func_name()" prototypes to "func_name(void)". If I remember
correctly, "func_name()" means you are remaining silent about this
function's parameters instead of stating it has no parameter in ANSI
C.
- Add timestamps to error messages.
- Suppress error messages caused by free_damage().
- Change how w->alpha_pict is generated, in hope to boost performance,
slightly, and as a step to eventually move handling code of most resources
used when painting to paint_preprocess().
- Remove alpha_pict parameter of shadow_picture() as it's not
necessary.
- Let window opacity affect frame opacity.
- Rename some members of struct _win.
- Add 4 helper free functions that free XserverRegion, Damage, Picture,
and Pixmap.
- Rename w->shadow to w->shadow_pict. Add a bool member w->shadow to
prepare for a future change.
More details on the issue report.
- Look up the client window of a WM frame when it's mapped instead of when
it's created, for better reliability.
- Fix a warning when building.
Use find_toplevel() to find out the WM frame of a client window. I
didn't noticed it beforehand. Fallback to the old method as compton does
not always get correct client windows.
- Clean up find_client_win() a bit. A BFS search algorithm could be more
optimal yet it requires a queue implementation.
More information in the issue report.
- Let window opacity affect the opacity of its shadow and frames even if
-z is enabled.
- Check for the range of -o to eliminate potential segfault.
- Change all #if DEBUG_XXX directives to #ifdef, thus making it
possible to directly enable debugging options with CFLAGS
(-DDEBUG_XXX).
- Print timestamp before event debugging messages.
More details in the bug report.
- Rewritten much of the opacity calculation, code cleanup.
- Commandline switch --inactive_opacity_override to restore the old
behavior in which inactive_opacity has higher priority than
_NET_WM_OPACITY.
- Use getopt_long() instead of getopt() for argument parsing, making
long options possible.
- Add support of colored shadows with 3 commandline switches.
More descriptions on issue #36.
- Listens ShapeNotify event to get around the Chromium window painting
issues.
- Adds dependency on X Shape extension.
- Adds a few functions for convenience, so a bit code clean up.
- Better event debug support, adds restack_win() debug.
Richard Grenville