The default implementation for get_default_attributes() returns NULL for
both names and values yet the code which iterates them is assuming they
will never be NULL.
Since the interface implies that if the values are set, they will return
valid strings, make the default implementation do that.
Fixes: #7069
(cherry picked from commit ab1c85830c)
Signed-off-by: Emmanuele Bassi <ebassi@gnome.org>
It seems that NVidia sets PFD_SWAP_EXCHANGE / WGL_SWAP_EXCHANGE_ARB
on pixel formats but doesn't guarantee that the backbuffer age is
constantly 2. My guess is that they use swap exchange only to signal
usage of a flip present method.
Fixes https://gitlab.gnome.org/GNOME/gtk/-/issues/7019
When changing the code to do the resize only when the size changed, I
forgot to queue a draw when the size did not change.
Fixes: 5031f30f28
Related: !7786
The warning gets triggered by rounding errors.
In particular when using fractional scales, the final tile may end up
not accurately matching the computed final value (in the example I was
debugging it was computing 1 vs 1.00000036 for the final tile index,
but that result computed a 0px wide tile size.
And for that tile size we hit that exit condition.
Add a uses-gl property to our sink implementation, and use
it in the paintable code. This avoids juggling a second gl
context, with the risk of leaking it.
Calling gtk_media_stream_realize is not mandatory, but we can
still try to make dmabufs happen. Tested by removing the realize
call from GtkVideo and using GDK_DISABLE=gl.
We only need a display to negotiate dmabuf formats. Pass that
directly, instead of getting the display of the GL context as
we did so far.
With this,
GSK_RENDERER=vulkan GL_DISABLE=gl gtk4-demo --run video_player
still uses dmabufs.
Related: #7048
The original intent was to only realize parents recursively for
non-widget accessible objects. The implementation, however, always
try to realize parents. In the case of GtkStackPage, which is a
non-widget accessible with a widget accessible child, this breaks.
Only realize non-widget accessible parents recursively if the
current accessible is not a widget as well.
Closes https://gitlab.gnome.org/GNOME/gtk/-/issues/7058
Fixes 6074a18e3e
(cherry picked from commit 06f08ea804)
It is useful to track down mysterious crashes in ci, but it causes
sporadic test failures, so disable it for now, until we have another
mysterious crash.
When setting a new paintable, we don't need to queue_resize() when it's
the same size as the old paintable.
This is especially useful when pictures are used in a listview or
gridview and different rows display images of the same size.
It is possible that the window gets unrealized while a handle to its
surface is exported. This, naturally, invalidates the handle, so there
is nothing left to unexport. We should just note that and do nothing,
rather than crashing.
Fixes a crash when a portal-backed file dialog parented to a window is
closed after the window it was parented to.
Reported-by: Ivan Molodetskikh <yalterz@gmail.com>
Signed-off-by: Sergey Bugaev <bugaevc@gmail.com>
The last part of logic in gtk_scrolled_window_measure () that accounted
for scrollbars was handling the hscrollbar first, and vscrollbar second.
For each of them, it looked at the orientation we're being measured in,
and either added or MAX'ed scrollbar's size request into ours (or not,
depending on scrollbar policy and whether overlay scrolling is used).
In case of GTK_ORIENTATION_HORIZONTAL, this resulted in
// MAX in hscrollbar width.
minimum_req = MAX (minimum_req, min_scrollbar_width + sborder.left + sborder.right);
// Add in vscrollbar width.
minimum_req += min_scrollbar_width;
whereas for GTK_ORIENTATION_VERTICAL, it was
// Add in hscrollbar height.
minimum_req += min_scrollbar_height;
// MAX in vscrollbar height.
minimum_req = MAX (minimum_req, min_scrollbar_height + sborder.top + sborder.bottom);
The former is correct and the latter is wrong: we should be adding the
size requests of the scrollbars together, and MAX'ing them with the
content size request.
Fix this by refactoring the logic to first handle the MAX'ing, and then
the addition.
This fixes the following criticals:
Gtk-CRITICAL **: 17:26:51.406: Allocation height too small. Tried to allocate 15x31, but GtkScrollbar 0x2a00fac0 needs at least 15x46.
that were happening when all of:
- scrollbar policy was set to ALWAYS,
- overlay scrolling was disabled,
- the scrollable child was really small.
Signed-off-by: Sergey Bugaev <bugaevc@gmail.com>
Upon joining the a11y tree. And do so recursively, as long as the parent
is also not a widget.
As for the explanation, please grab a mug of your favorite drink. It's
a little complicated.
GTK realizes AT contexts in 3 situations:
1. When it's a toplevel, it's realized unconditionally
2. When the widget is focused
3. When the accessible is appended to a realized parent
Most importantly, GTK lazily realizes accessibles, and does not realize
child accessibles recursively.
Clearly, conditions 1 and 2 only ever happen for GtkWidgets, which are
accessible objects themselves. These two conditions will handle the vast
majority of cases of apps and platform libraries.
However, there are non-widget accessibles out there. GTK itself offers a
non-widget accessible implementation - GtkAtspiSocket - which is used by
WebKitGTK.
Now, let's look at WebKitGTK use case. It'll demonstrate the problem
nicely.
WebKitGTK creates the GtkAtspiSocket object *after* loading most of the
page. At this point, there are 2 possibilities:
1. The web view widget is focused. In this case, the AT context of the
web view is realized, and GTK will realize the GtkAtspiSocket when
it is added to the a11y tree (condition 3 above).
2. The web view widget is *not* focused. At some point the user focuses
the web view, and GTK will realize the AT context of the web view.
But remember, GTK does not realize child accessibles! That means
GtkAtspiSocket won't be realized.
This example demonstrates a general problem with non-widget accessibles:
non-widget accessibles cannot trigger conditions 1 and 2, so they're
never realized. The only way they're realized in if they happen to be
added to an already realized accessible (condition 3).
To fix that, the following is proposed: always realize non-widget
accessibles, and also of their non-widget accessible parents. This is
not ideal, of course, as it might generate some D-Bus chattery, but GTK
does not have enough information to realize these objects at more
appropriate times.
Move the code that realizes an AT context if the parent is realized,
into to a separate function. This will make the next patch easier to
read.
No functional changes.
