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Merge branch 'wip/exalm/headerbar-migration' into 'master'

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docs: Mention GtkHeaderBar title and subtitle changes in migration guide

See merge request GNOME/gtk!1900
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Matthias Clasen 2020-05-14 15:37:16 +00:00
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docs/reference/gtk/migrating-3to4.xml
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@ -535,6 +535,35 @@
the more accurate name gtk_header_bar_set_show_title_buttons(). The
corresponding getter and the property itself have also been renamed.
</para>
<para>
The gtk_header_bar_set_custom_title() function has been renamed to
the more accurate name gtk_header_bar_set_title_widget(). The
corresponding getter and the property itself have also been renamed.
</para>
<para>
The gtk_header_bar_set_title() function has been removed along with its
corresponding getter and the property. By default #GtkHeaderBar shows
the title of the window, so if you were setting the title of the header
bar, consider setting the window title instead. If you need to show a
title that's different from the window title, use the
#GtkHeaderBar:title-widget property to add a #GtkLabel as shown in the
example in #GtkHeaderBar documentation.
</para>
<para>
The gtk_header_bar_set_subtitle() function has been removed along with
its corresponding getter and the property. The old "subtitle" behavior
can be replicated by setting the #GtkHeaderBar:title-widget property to
a #GtkBox with two labels inside, with the title label matching the
example in #GtkHeaderBar documentation, and the subtitle label being
similar, but with "subtitle" style class instead of "title".
</para>
<para>
The gtk_header_bar_set_has_subtitle() function has been removed along
with its corresponding getter and the property. Its behavior can be
replicated by setting the #GtkHeaderBar:title-widget property to a
#GtkStack with #GtkStack:vhomogeneous property set to %TRUE and two
pages, each with a #GtkBox with title and subtitle as described above.
</para>
<para>
The ::pack-type child properties of GtkHeaderBar and GtkActionBar have
been removed. If you need to programmatically place children, use the