The size allocation code maintains an array of two elements,
to track the allocation of children packed into the two sides
of a header bar. Sometimes this array is indexed with 0 and 1,
and sometimes its indexed with GTK_PACK_START and GTK_PACK_END.
The latter happen to have the values 0 and 1, respectively, but
that's not really obvious.
For clarity, this commit changes the code to index those arrays
consistently, sticking to 0 and 1 across the board.
It's only possible to have a label or a custom title, not both.
The size allocate code confusingly treats them as independent.
That is confusing, because, as the code is written, it makes it
look like the space for the custom title isn't getting accounted
for.
This commit else-ifies some parts of the size allocate code for
clarity.
GtkHeadeBar checks the window type hint to determine if the regular
buttons such as menu, maximize or iconify should be visible in the
header bar.
However, an application may very well use a "normal" toplevel window and
set it transient and modal afterwards. In such a case, the iconify
button would remain visible, and the user can hide the window, but being
a modal, the parent window would remain insensitive.
Check for the window type, modality and transient relationship to decide
whether or not the regular toplevel buttons should be visible in the
header bar.
https://bugzilla.gnome.org/show_bug.cgi?id=767052
We use a label_sizing_box to make sure the headerbar can always contain
both a title and a subtitle without resizing when showing/hiding either
of them, but we should only do that for the height; the min width of the
label_box can be larger than that of the label_sizing_box.
The window button setup depends on properties of the toplevel window.
Instead of updating the setup on realize, do it when the toplevel
changes.
This makes sure that when a GtkHeaderBar is added to a window
all the widgets are present and get_preferred_height() will return
the height the widget will have when finally shown. This allows
the logic in gtkwindow to select the right window size so that
the content size will match the requested default size.
https://bugzilla.gnome.org/show_bug.cgi?id=756618
The minimum title width affects the minimum window width
for CSD windows. To allow smaller windows like without
CSD reduce it a bit (276px vs 156px min width)
https://bugzilla.gnome.org/show_bug.cgi?id=751341
We were only updating window buttons when the headerbar was
a direct child of the window. That is not the case in more
complicated situations, such as the split headers in gedit
or polari. To fix such cases, make the headerbar itself listen
for state changes on its toplevel.
https://bugzilla.gnome.org/show_bug.cgi?id=747805
The child property setting must be prepared to deal with any
child property for any child, even if it doesn't make sense,
like the pack-type for the custom title. This is happening
in glade when undoing a change in the custom-title property.
We need to be a little more forthcoming with showing and hiding
the separators - their visibility now depends on the the visibility
and pack type of the regular headerbar children. This was observed
in gnome-contacts, where headerbar buttons are shown and hidden.
GtkWindow has 4 (!) APIs for setting window icons, and we
have to try them all in the right order to find the right
icon. This commit makes it so, and keeps the icon list
manipulation inside gtkwindow.c by adding a private API
for getting a single icon at the right size.
https://bugzilla.gnome.org/show_bug.cgi?id=722515
Add a custom title had the side-effect of showing the widget.
That is not right, adding children and managing their visibility
should be independent. The headerbar size allocation code also
made the assumption that a custom title is always visible.
With these changes, GtkHeaderBar should be usable in situations
where the centering functionality is not required, and it is
important to freely pack content at both ends, such as in nautilus.
https://bugzilla.gnome.org/show_bug.cgi?id=722340
