Before becoming the selection owner for _NET_WM_CM_Sn, compton will now check if
that selection is already owned (which means that another composite manager is
already running). If this check fails, startup will be refused. This behaviour
is required by EWMH / ICCCM.
Because this should catch all composite managers, the error message that was
used before when another manager is already running is reworded to mention that
the other manager does not follow EWMH.
Signed-off-by: Uli Schlachter <psychon@znc.in>
Under extreme race conditions (window A close at the same time as window
B create), there can be multiple windows with same id in compton's window
list. If at this point window B closes itself as well, finish_destroy_win
might destroy a different window as what's passed to destroy_callback.
This can be a problem because someone can still hold a reference to that
window (e.g. 't' in paint_preprocess), and there's no way to clear that
reference. If finish_destroy_win always destroy the same window passed
to destroy_callback, this will not be a problem.
GitHub: Add a template for issues submitted, .github/issue_template.md.
I hope people could provide more needed information when reporting
issues after we provide a number of fields to fill and some extra
instructions in the template, to reduce the time wasted on the issues
because of insufficient information.
See: https://help.github.com/articles/creating-an-issue-template-for-your-repository/
compton-convgen: Misc: Clean up. The commit brings no change to the
functionality of the script.
- Partially fix PEP 8 compliance:
- Place imports on separate lines.
- Replace leading tabs with 4 spaces.
- Add docstrings to classes and functions.
- Surround top-level function and class definitions with two blank
lines.
- Remove spaces around keyword arguments.
- Move all statements to separate lines.
- Break some long lines into several lines.
- Remove trailing semicolons after statements.
- CGError: Use functionality from the base class Exception to store the
description, instead of the custom logic.
- CGInternal: Remove, as it is unused.
- Hide the internal function gen_invalid() and args_readfactors() by
prefixing their names with an underscore.
- Move the module-level command-line handling code to two new
functions, _main() and _parse_args(), and only execute if running in
the main scope.
Misc: Create directories for icons before installing them. This fixes
the install failure if the DESTDIR used when executing `make install`
does not contain the icon directories. It could appear when the user
does not wish to directly install the software to the system, like in
Gentoo ebuild or Arch Linux AUR building.
- Remove the const function attribute from get_time_*(), since the
functions they call that actually get the time probably access global
variables or have other behaviors unacceptable for const functions.
- Change the const function attribute on win_has_frame() to pure, as it
accesses memory its parameter points to, which is invalid for a const
function.
Bug fix: Select the larger of the X window border width and
_NET_FRAME_EXTENTS, instead of adding them together, when determining
the frame extents. (Supposedly) more EWMH compliant, as EWMH
_NET_FRAME_EXTENTS should include the X window border width already. We
did not choose to completely rely on _NET_FRAME_EXTENTS to remove the
need to keep track of whether there is a _NET_FRAME_EXTENTS, and
(hopefully) take care of some cases when it is wrong. The commit should
fix awesomeWM/awesome#425. Thanks to psychon for the information. (#302)
The commit fixes the bug in win_get_region_noframe() that the X window
border width is not considered when determining the width/height of the
window without frame, as well.
- Add margin_t, a structure that represents margins around a rectangle.
- Store frame extents of a window with margin_t, replacing the 4
fields ({left,right,top,bottom}_width) in struct _win.
- Add two helper macros, cmemzero() and cmemzero_one(), that zero out a
block of memory.
Misc: Update the descriptions of --backend in the compton man page.
Mention `xr_glx_hybrid` backend, and add more descriptions of the
operation and characteristics of the backends. Thanks to @onodera-punpun
in the Gitter room for telling me about the missing documentation of the
`xr_glx_hybrid` backend.
Yuxuan Shui