LGI does not protect against use-after-free issues that can occur due to
using an object after finalisation. This manifests itself as occasional
crashes on Travis in cairo_region_union_rectangle() (AFAIK no one ran
into this issue in real-world usage).
Since visible drawables are always strongly reachable, the issue can
only occur with invisible drawables. The previous commit made sure that
those are fully repainted when they become visible, so we can just
ignore redraws for those and fix the crash issue.
Signed-off-by: Uli Schlachter <psychon@znc.in>
Instead of tracking all drawables that are alive, the code now only
tracks visible drawables. When a drawable is made visible it is
completely repainted. This should not cause a difference when a wibox is
initially made visible, because it has to be redrawn anyway. However,
this introduces a full repaint when a wibox is hidden and then made
visible again.
Thanks to this change, we can stop using weak tables. Visible drawables
cannot be collected and so we can keep a strong reference to them. This
allows us to get rid of the weak tables which solves various problems
involving finalizers and using objects after finalisation.
Signed-off-by: Uli Schlachter <psychon@znc.in>
This new function is called whenever the visibility of the drawable
changes. Later commits can use this for explicitly tracking the lifetime
of drawables instead of using magic weak tables.
Signed-off-by: Uli Schlachter <psychon@znc.in>
This restore a feature that was available in Awesome 2.1-3.2.
The reason margin is implemented rather than use a container is to
be able to make the background smaller than the bar.
The current progressbar code dates from a time when Awesome had
a very limited drawing API. This commit first re-write the
algorithm to remove the workaround used to draw the border using
full rectangles only. It then add support for outer and inner
shapes with their respective border settings.
This commit also add clip support. This is enabled by default, but
could be disabled to have the bar taller than the background.
Twice now we had problems with the garbage collector which caused signals
established via weak_connect_signal() not to be disconnected when we wanted them
to be disconnected. The effect was that we tried to redraw a drawable after it
was garbage collected which caused errors.
Instead of playing whack-a-mole with all the various ways that might make us
redraw a drawable after GC, let's just fix all of these issues by explicitly
checking for this case and turning it into a no-op.
Signed-off-by: Uli Schlachter <psychon@znc.in>
The previous commit made wibox.drawable turn a "normal redraw" into a complete
repaint when it was moved to another screen. However, nothing happened until
that normal redraw.
This commit triggers a normal redraw when we are (possibly) moved to another
screen. More precise, this means that whenever a screen appears, disappears or
changes its geometry and when the drawable is moved, we trigger a normal redraw.
This redraw will likely do nothing, because no relayout is pending and no part
of the surface needs a redraw, so it is cheap.
However, if the drawable really ends up on another screen, then the code from
the previous commits makes us do a full relayout and redraw.
This commit likely fixes the current instability of test-screen-changes.lua. See
https://github.com/awesomeWM/awesome/issues/982#issuecomment-231712056.
As explained there, the test fails because the fake screen that it created is
still referenced, so cannot be garbage collected, but the test doesn't succeed
unless the screen is garbage collected. So something is still referencing the
screen that was removed. This something can be a client's titlebar, because the
underlying drawable still has a context member referring to the old screen.
This commit should fix that problem, because we now trigger a redraw which will
compute a new context and thus the reference to the old screen is released.
Signed-off-by: Uli Schlachter <psychon@znc.in>
The previous commit made the hierarchy do a re-layout when the context changes.
However, widgets could change their appearance depending on the context without
changing their layout. Thus, the previous commit is not enough.
This commit also makes the drawable redraw everything when the context changes.
Signed-off-by: Uli Schlachter <psychon@znc.in>
When the context for widget changes (e.g. we are on a new different screen or
have a different DPI value), widgets might change their appearance even though
they didn't emit widget::layout_changed. Thus, update the hierarchy in these
cases.
Signed-off-by: Uli Schlachter <psychon@znc.in>
widget_at() no longer exists since 0aa4304bda (and the surrounding commits
stopped us using this function).
Signed-off-by: Uli Schlachter <psychon@znc.in>
The actual bg is drawn either with fake transparency over the wallpaper (this
uses operator OVER) or for true transparency with operator SOURCE. The bgimage
should be drawn ontop of this without erasing the background and thus needs
operator OVER.
However, before this commit the bgimage was drawn in the same way as the bg and
thus inherited its SOURCE operator if a compositor is running. Fix this by
restoring the default operator (OVER) and also e.g. the default source before
drawing the bgimage.
Fixes: https://github.com/awesomeWM/awesome/issues/954
Signed-off-by: Uli Schlachter <psychon@znc.in>
When called with the file name of an image, this function failed to turn that
file name into a cairo surface.
Fixes: https://github.com/awesomeWM/awesome/issues/954
Signed-off-by: Uli Schlachter <psychon@znc.in>
The requirement to call add_signal() was added to catch typos. However, this
requirement became increasingly annoying with property::<name> signals and e.g.
gears.object allowing arbitrary properties to be changed.
All of this ended up in a single commit because tests/examples fails if I first
let add_signal() emit a deprecation warning.
Signed-off-by: Uli Schlachter <psychon@znc.in>
It was set as `module` instead of `class` because ldoc was confused
set shown the methods as functions and functions as methods.
This commit set the explicit section so ldoc don't gress (wrongly)
local functions and metatable based constructors are not
documented unless an explicit @function is added.
Also add missing return values and fix formatting.
Before this commit, it was necessary to call 'rawset' to be
able to add new fields to the wibox. This is no longer required.
This solution was choosen because wibox is itself a base class of
menus and wibars. Those classes can now add new properties without
hacks.
As wibox contain a drawin, but isn't one, it is necessary to map
drawin to wibox.
This could eventually be fixed by turning wibox into drawin just
like the client, tag and screen do.
When there are no screens, screen[1] causes an error. Thus, this isn't a safe
fallback for these functions. Instead, this commit makes the code prefer the
primary screen, if possible. If no screen exists, then screen.primary will be
nil, but at least it won't throw an error like screen[1] does.
(This also changes the outdated copy of getbycoord that exists in
wibox.drawable)
Signed-off-by: Uli Schlachter <psychon@znc.in>
This makes it possible to have the systray only visible on the primary screen,
which is the new default value. This also makes it possible to configure
directly on which screen the systray should be visible.
This breaks the API in the sense that people who use "the old method" to
configure the systray's screen possibly don't have a systray.
Fixes: https://github.com/awesomeWM/awesome/issues/724
Signed-off-by: Uli Schlachter <psychon@znc.in>
There's no point in having multiple instances of this, because there are no
per-instance settings and the systray can only be visible in a single place at a
time anyway.
Signed-off-by: Uli Schlachter <psychon@znc.in>
* Better widget names when using the declarative syntax
* Add ratio.get_ratio to avoid using the private API
* Also support `set_widget` when swapping widgets
Issues involve:
- :layout() had the wrong signature and expected a cr argument that was left
from when this was still the :draw() function.
- horizontal and vertical reflection were mixed up (I guess it has always been
this way?)
- The return value should be a table of widget placements. Instead it was just a
single widget placement.
This is broken since commit 85ab3f045b.
Fixes: https://github.com/awesomeWM/awesome/issues/718
Signed-off-by: Uli Schlachter <psychon@znc.in>
This commit makes these methods invoke the method on a widget in a protected
context. Thanks to this, e.g. the wibox and other widgets are protected from
errors in a child widget.
Additionally, fit_widget() now assumes 0 if a widget's :fit() method didn't
provide a number.
Signed-off-by: Uli Schlachter <psychon@znc.in>
I just spent too much time tracking down a bug that happened while drawing a
widget. This is the reason why we should apply sanity checks while widgets are
constructed, so that we get a useful backtrace.
Signed-off-by: Uli Schlachter <psychon@znc.in>
This makes the code use the existing functions for setting widgets. That way,
all the sanity checks that the existing functions have are applied for this code
as well.
I just spent half an hour tracking down a bug where a boolean ended up as a
"widget" in a fixed layout. The symptom was that while drawing the widget, an
error happened. Via this change, the error would instead be flagged while
constructing the widget.
Signed-off-by: Uli Schlachter <psychon@znc.in>
This commit documents that a textbox already accepts a screen object where a
screen index is expected. Also, this changes the widget API in that a widget's
context.screen is now a screen object instead of a screen index.
Signed-off-by: Uli Schlachter <psychon@znc.in>
Daniel Hahler
Uli Schlachter
Emmanuel Lepage Vallee
Salorium
Daniel Hahler