If you've begun a user action and call `gtk_text_buffer_set_text`, you
get an unexpected warning:
```
Gtk-WARNING **: Cannot begin irreversible action while in user action
```
which can be fixed by doing the delete/insert yourself. But this is not
documented as occurring, so document it.
The textbuffer test is calling into a function defined by the AT-SPI
accessibility backend. As of commit 4ddf1b70 we only build and run the
test on Linux, but the function in question isn't really
accessibility-related: it's just a serialization function.
Those property features don't seem to be in use anywhere.
They are redundant since the docs cover the same information
and more. They also created unnecessary translation work.
Closes#4904
It turns out we can't just use the size returned
by the memory stream as-is, since it may contain
unfilled garbage at the end, which utf8 validation
will choke on. So, cut it off at the first '\0'
we find.
Update all the places where we switch over
PangoAttrType to handle PANGO_ATTR_TEXT_TRANSFORM,
and do nothing for now - text-transform support
will land in 4.6.
This was an oversight when porting the GtkTextHistory into GTK. We simply
need to bind the GtkTextBuffer action into the text history for grouping
to work correctly.
Fixes#3977
Remove a boatload of "or %NULL" from nullable parameters
and return values. gi-docgen generates suitable text from
the annotation that we don't need to duplicate.
This adds a few missing nullable annotations too.
Make these functions return FALSE if they did not
return the exact position that was requested.
Adapt tests.
Based on a patch by Sebastien Wilmet
Fixes: #506
Redo the tag insertion function to avoid quadratic
behavior, and at the same time, fix handling of
alpha for color attributes.
Update the copy of this function in gtk4-demo
as well.
Instead of blindly creating new tags for every attribute,
reuse existing tags. For the syntax highlighting of the
ui file of the cursors demo, this gets us down from
20.000 tags to 6.
We can only insert tags in the buffer if they come
from the same GtkTextTagTable as the buffer uses.
If that is not the case, paste the text without tags.
Fixes: #2991
To build a better world sometimes means having to tear the old one down.
-- Alexander Pierce, "Captain America: The Winter Soldier"
ATK served us well for nearly 20 years, but the world has changed, and
GTK has changed with it. Now ATK is mostly a hindrance towards improving
the accessibility stack:
- it maps to a very specific implementation, AT-SPI, which is Linux and
Unix specific
- it requires implementing the same functionality in three different
layers of the stack: AT-SPI, ATK, and GTK
- only GTK uses it; every other Linux and Unix toolkit and application
talks to AT-SPI directly, including assistive technologies
Sadly, we cannot incrementally port GTK to a new accessibility stack;
since ATK insulates us entirely from the underlying implementation, we
cannot replace it piecemeal. Instead, we're going to remove everything
and then incrementally build on a clean slate:
- add an "accessible" interface, implemented by GTK objects directly,
which describe the accessible role and state changes for every UI
element
- add an "assistive technology context" to proxy a native accessibility
API, and assign it to every widget
- implement the AT context depending on the platform
For more information, see: https://gitlab.gnome.org/GNOME/gtk/-/issues/2833
When inserting Pango markup into a text buffer, translate
Pango attributes for overlines and hyphenation control
into the corresponding text tag properties.
This changes gtk_text_buffer_insert_texture() to
gtk_text_buffer_insert_paintable() which is strictly more useful
(as textures are paintables). It also fixes the code to actually
support drawing the paintables (as well as tracking changes
to the paintables.
