A call to cairo_close_path() adds a straight line to the beginning of
the current sub-path. This is used in some of the shapes to, well, close
the shapes.
Sub-paths can be created explicitly via cairo_new_sub_path(), but also
implicitly via cairo_move_to(). When a new sub-path is started, there is
no current point on the path. This means that e.g. cairo_line_to() is in
this start equivalent to cairo_move_to() (= no line is created) and that
cairo_curve_to() first does a cairo_move_to() to the beginning of the
curve. Similarly, cairo_arc() and cairo_arc_negative() first do a
line_to() to the beginning of the arc, and this line_to() can be
implicitly turned into a curve_to().
The problem with the code in gears.shape is that parts of the code
(implicitly) assume that there is not yet any path when the shape
function is called. If this assumption is broken, the call to
close_path() could go to the wrong point, because the path did not start
at the expected position.
Most of the functions in gears.shape already implicitly start a new
sub-path via a call to cairo_move_to(). Those that do not (necessarily)
begin with a call to cairo_move_to() are handled in this commit: They
get an explicit call to cairo_new_sub_path().
This change fixes the issue reported at
https://github.com/awesomeWM/awesome/pull/2804, because the shapes will
no longer be influenced by the pre-existing path. The move_to() that was
left around and caused that issue turns into a degenerate part (it only
has a move_to(), so nothing can be drawn) and is then discarded by
cairo.
Signed-off-by: Uli Schlachter <psychon@znc.in>
Cairo's save/restore methods handle all properties except for the
current path. The path is just left as-is.
A widget's draw method could create some path without consuming it. This
path would then interfere with random things later which did not expect
a path to already exist.
This commits adds calls to cairo_new_path() in the relevant positions to
clean things up.
This not only applies to a widget's draw method, but also
{before,after}_draw_{child,children}. However, these methods could (for
whatever reason) create paths that are to be consumed in one of the
other methods. To keep this working, the path is only cleared after all
of these methods ran.
I do not expect this commit to break anything, because a widget cannot
really assume much about what widget is drawn after it. Especially so,
because partial redraws could mean that some later widget is skipped and
not redrawn.
This should fix the issue reported at
https://github.com/awesomeWM/awesome/pull/2804.
Signed-off-by: Uli Schlachter <psychon@znc.in>
This function checks if a given cairo context has an empty clip. It was
written with the assumption that cairo_clip_extents() produces the x, y,
width, height of the clip extents. However, that function actually
produces x1, y1, x2, y2, where (x1, y1) and (x2, y2) are the corners of
the rectangles.
Due to the way the function is written, it will return non-zero numbers
when there is a translation (cr:translate()). Thus, this function worked
basically never.
Fix this by checking if both points have the same X- or Y-coordinate.
Signed-off-by: Uli Schlachter <psychon@znc.in>
With draw_empty=false, :fit() can return 0,0. Then, when :layout() is
called, it will compute negative widths and heights. This can then cause
lots of problems later on.
Avoid this by having :layout() return nothing instead of producing
negative sizes.
Fixes: https://github.com/awesomeWM/awesome/issues/2799
Signed-off-by: Uli Schlachter <psychon@znc.in>
This commit also add some "magic" comments to existing tests so they
render correctly. Note that some older commits predates these "magic"
comments, which is why they are not there.
Also document the `test` property as deprecated. It exists because the
older API (`naughty.notify`) had it. It exists on purpose in the
rewrite, it cannot just be removed even if it was never in a release.
This will be shared by the notifications stored in a wibox/wibar and the
ones using a popup. It extends the constraint and margins container
to take care of some boilerplate code. While other widgets have their
own public API, those 2 are private since they are not different enough
to warrent a new public module.
There is some boilerplate code that make using the widget_template
harder when using the raw `wibox.container.background`. This widget
takes care of it.
It is a normal textbox with some extra boilerplate code. Having this
in a separate widget allows the notification to be defined from rc.lua
without a ton of beautiful options and connect_signal.
Rather that abusing of how the arguments are displayed to convey the
type, add native support.
It still uses the @param for the doc, so this doesn't cause a million
little noisy changes, but the rendered HTML now have a real section for
the type. This is added to both the summary and the expanded description.
Additionally, if the type has a description string, a second is added.
This way their name doesn't get mangle by the broken magic. It will also
eventually allow to `error()` in the template when the implicit
`@function` is used.
This commit also fixes a large number of issues found while
proof-reading everything.
ldoc has a magical `@classmod` module type which tries to detect
what is a method and what is a static function. It fails about as
often as it works. This commit makes everything explicit to remove
such issues.
Fixes#2640
Ref #1373
Emmanuel Lepage Vallée
mergify[bot]
Vishnunarayan K I
Uli Schlachter
worron
Uli Schlachter
mergify[bot]
DrEuler
Alphonse Mariya