This argument allows the caller to specify that only an editable
cell should start editing but an activatable cell should not toggle
it's state, this is important for public apis like
gtk_tree_view_set_cursor_on_cell() which are only intended to
programatically bring attention to the editing of a specific
row or cell but not actually change any data.
GtkTreeView & CellAreaScaffold updated for the last minute api change.
Some details:
- button_request was not needed, consult the minimum request of the button
- gtk_tree_view_column_get_button() needed to be public as people can set
tooltips on the button (and libgail accesses the button).
It's a better test case if the scaffolding only displays the rows from top
to bottom and doesnt line up the cells from left to right (because it shows
that height-for-width still works with vertically oriented areas).
- When we reach a cell that is out of the render area, break out
of the loop (for columns user resized too small)
- CLAMP the size of the last renderer to fit into the area
(so that renderers get a chance to ellipsize when rendered
with a space less than allocation, same reason as above).
- Hand out remaining space in the render area to the last cell,
this is for shallow rows in the expand column which may recieve
more than the allocated width.
Introduce a 'custom-item-activated' on the widget, which behaves
similairly to GtkEntryCompletion::action-activated, i.e. is emitted when
a custom item is chosen from the dropdown list.
Clients can use the name provided when adding the item as a detail for
the signal, to get notified when that specific item is activated, or use
the signal without details to get notifications for all custom items.
The GtkSwitch widget is a simple UI control that has two states: on and
off. Toggling between the states is possible by clicking the widget or
by dragging the handle.
https://bugzilla.gnome.org/show_bug.cgi?id=634987
Turns out theres not much reason to do this in a separate api,
now we just sum up the sizes of aligned cell groups in GtkCellAreaContextBox
when pushing the group size.
