Wallpapers are usually big images that use up a lot of memory. This commit makes
gears.wallpaper call :finish() on all involved surface to make them free their
memory.
This is a lot faster than waiting for the garbage collector to collect these
surfaces. Due to the large size of wallpapers, such a special case makes sense
for this code.
Hopefully-helps: https://github.com/awesomeWM/awesome/issues/368
Signed-off-by: Uli Schlachter <psychon@znc.in>
Loading a file normally has the same behaviour as before. First the cache is
checked and if nothing is found, the file is loaded and cached.
This commit changes the behaviour of loading a file uncached. This no longer
removes the file from the cache if it is cached (why should it?) and also does
not put it in the cache.
This means that users of load_uncached and load_uncached_silently can now freely
modify the resulting surface without interfering with other API users.
Signed-off-by: Uli Schlachter <psychon@znc.in>
This library is a wrapper around pcall() / xpcall() that prints an error message
via gears.debug.print_error() in case of errors.
Signed-off-by: Uli Schlachter <psychon@znc.in>
It's unused since commit 0aa4304bda. Before this was a stable sorting
algorithm since table.sort is allowed to be unstable. Apparently we don't need a
stable sorting algorithm anymore.
Signed-off-by: Uli Schlachter <psychon@znc.in>
It is an internal API and is used by `gears.shape`, `gears.pattern`
and `gears.composition` only.
This commit also add `:rotate_at` and `:copy` methods.
This code is imported from Elv13 config and make it very easy
to create shaped objects.
If accepted upstream, other shapes, such as arrow and powerline
will also be added. This commit introsuce the 2 most common
shapes, rounded rectangle and rounded bar.
gears.surface now returns a fallback image surface that is good enough for what
this code tries to do here.
Signed-off-by: Uli Schlachter <psychon@znc.in>
Before this, calling one of the loading functions with a nil argument always
made it return the default 0x0 surface. With this change, the passed-in default
value is now properly applied.
Signed-off-by: Uli Schlachter <psychon@znc.in>
Oh hey, Pango exports an API that allows to query for named colors based on the
famous rgb.txt! Let's use that!
Signed-off-by: Uli Schlachter <psychon@znc.in>
This adds support to gears.color.parse_color to parse things like "#fff" (one
character per color component, without alpha) and "#ffff0000ffff0000" (four
characters per component, with alpha).
This makes sense on its own, but should also help with
https://github.com/awesomeWM/awesome/issues/585.
Signed-off-by: Uli Schlachter <psychon@znc.in>
Previously, a Lua error was thrown when loading a file failed. Most callers are
not prepared for this and the result is less than optimal.
This commit makes the functions print the errors and return nil instead. For
callers that want to handle errors themselves, "_silent" variants of the
functions are introduced which just return errors to the caller.
Signed-off-by: Uli Schlachter <psychon@znc.in>
Lua will remove objects as values from a weak table before these objects are
finalized, but as values only in the next garbage collection cycle after the
object was finalized. Up to now, gears.object uses a table with weak keys so
that :disconnect_signal() works. This means that a signal can still call methods
which were already considered garbage by the garbage collector and thus can use
userdata from the C side which was already finalized. Crashes and other bugs
result.
This commit changes the code so that the function is also a value in the weak
table. Thus, the GC will remove the entry before the object is finalized.
Special magic is needed for Lua 5.1, because there only userdata has the
behavior that we want while we have a function. We do some magic with function
environments to make this work...
Closes https://github.com/awesomeWM/awesome/pull/567.
Signed-off-by: Uli Schlachter <psychon@znc.in>
Usually users want a wallpaper on all their screens. With the current code, this
resulted in a loop of upload-wallpaper, {download-wallpaper, add-new-part,
upload-wallpaper}*.
Fix this by being more intelligent: Instead of setting the wallpaper
immediately, this now uses gears.timer.delayed_call() to set the wallpaper. All
following modifications which come in before the delayed call runs will still be
part of the current update. This should mean that during startup, there is just
a single upload of a wallpaper.
(The above is what happens if there is no wallpaper yet. If there is already
one, we use :create_similar() and thus should only upload the part of the
wallpaper that changed, but this doesn't really make a difference.)
As a side-effect, the new code no longer draws to the old wallpaper to modify
it, but always creates a copy of it. This means that:
Fixes https://github.com/awesomeWM/awesome/issues/288.
Closes https://github.com/awesomeWM/awesome/pull/530.
Signed-off-by: Uli Schlachter <psychon@znc.in>
This makes the timer emit signals for when it is started and stopped. This does
not add a signal for :again(), because that function just calls the other two
functions and thus already emits start and stop.
Signed-off-by: Uli Schlachter <psychon@znc.in>
This has some positive results on the "benchmark test". Each single number is
the best one out of three runs.
Before:
create wibox: 0.0826502 sec/iter ( 13 iters, 1.157 sec for benchmark)
update textclock: 0.0186952 sec/iter ( 57 iters, 2.473 sec for benchmark)
relayout textclock: 0.0158112 sec/iter ( 64 iters, 1.028 sec for benchmark)
redraw textclock: 0.0015197 sec/iter (662 iters, 1.861 sec for benchmark)
After:
create wibox: 0.0825672 sec/iter ( 13 iters, 1.154 sec for benchmark)
update textclock: 0.00378412 sec/iter (277 iters, 4.216 sec for benchmark)
relayout textclock: 0.00259056 sec/iter (420 iters, 1.09 sec for benchmark)
redraw textclock: 0.00105128 sec/iter (958 iters, 1.79 sec for benchmark)
We see no significant change in the creation of wiboxes (99.9% compared to
before). Update (20% of the previous run time), relayout (16%) and redraw (69%)
are all sped up by this change.
Signed-off-by: Uli Schlachter <psychon@znc.in>
Instead of going through LGI to call cairo, this now implements the various
matrix operations directly in Lua. The plan is to avoid the overhead that we hit
due to LGI.
Signed-off-by: Uli Schlachter <psychon@znc.in>
With the second argument being 2, the traceback will not include the error
handling function, but instead end at the actual place of the error.
Signed-off-by: Uli Schlachter <psychon@znc.in>
This adds gears.timer.start(timeout, callback) that creates a timer object and
connects a callback to it, all in one go.
Additionally, this adds gears.timer.weak_start(timeout, callback). The weak
version still allows the callback function to be garbage collected and will then
stop the timer.
This was tested with the following code:
require("gears.timer").start(0.3, function()
print("ping")
if collectgarbage("step", 500) then
print("collection done")
error("err")
end
return true end)
require("gears.timer").weak_start(0.1, function()
io.stdout:write(".")
return true
end)
After a full collection cycle, both timers are stopped. The first one is stopped
because of the error() that it generated. The second one is stopped because the
callback function was garbage collected.
Ref: https://github.com/awesomeWM/awesome/issues/216
Signed-off-by: Uli Schlachter <psychon@znc.in>
Daniel Hahler
Uli Schlachter
Emmanuel Lepage Vallee
Daniel Hahler
actionless