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docs: Mention the demise of menus in the migration guide

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This needs more details, but it is a start.

Also add sections about grabs and about toolbar
overflow handling.
This commit is contained in:
Matthias Clasen 2019-12-29 19:52:22 -05:00
parent b06331218d
commit 85bf4cf895
1 changed files with 43 additions and 1 deletions
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44
docs/reference/gtk/migrating-3to4.xml
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@ -305,6 +305,18 @@
</para>
</section>
<section>
<title>Stop using grabs</title>
<para>
GTK 4 no longer provides the gdk_device_grab() or gdk_seat_grab() apis.
</para>
<para>
If you need to dismiss a popup when the user clicks outside (a common
use for grabs), you can use the GdkSurface #GdkSurface:autohide property instead.
GtkPopover also has a #GtkPopover:autohide property.
</para>
</section>
<section>
<title>Adapt to coordinate API changes</title>
<para>
@ -673,7 +685,7 @@
<section>
<title>Adapt to changes in the API of GtkEntry, GtkSearchEntry and GtkSpinButton</title>
<para>
The GtkEditable has been made more useful, and the core functionality of
The GtkEditable interface has been made more useful, and the core functionality of
GtkEntry has been broken out as a GtkText widget. GtkEntry, GtkSearchEntry,
GtkSpinButton and the new GtkPasswordEntry now use a GtkText widget internally
and implement GtkEditable. In particular, this means that it is no longer
@ -851,6 +863,36 @@
</para>
</section>
<section>
<title>GtkMenu, GtkMenuBar and GtkMenuItem are gone</title>
<para>
These widgets were heavily relying on X11-centric concepts such as
override-redirect windows and grabs, and were hard to adjust to other
windowing systems.
</para>
<para>
Menus can already be replaced using GtkPopoverMenu in GTK 3. Additionally,
GTK 4 introduces GtkPopoverMenuBar to replace menubars. These new widgets
can only be constructed from menu models, so the porting effort involves
switching to menu models and actions.
</para>
<para>
Since menus are gone, GtkMenuButton and GtkMenuToolButton also lost their
ability to show menus, and need to be used with popovers in GTK 4.
</para>
</section>
<section>
<title>GtkToolbar overflow handling has changed</title>
<para>
The handling of overflow in toolbars has been simplified.
Instead of creating a proxy menuitem and setting it with
gtk_tool_item_set_proxy_menu_item(), you simply provide
a label for the overflow menu with gtk_tool_item_set_overflow_text().
GTK will figure out itself whether to create a check- or
radioitem as proxy.
</para>
</section>
</section>
</chapter>