Remove all the old 2.x and 3.x version annotations.
GTK+ 4 is a new start, and from the perspective of a
GTK+ 4 developer all these APIs have been around since
the beginning.
Instead of allowing people to pass a uint user-data, insist on them
comparing mime types.
The user data was a uint instead of a pointer anyway, so uniqueness
could not be guaranteed and it caused more issues than it was worth.
And that's ignoring the fact that it basically wasn't used.
Without specifically connecting ::delete-event to something, the dialog
will be destroyed when it is closed, for example by pressing Esc. This
meant that when dismissing it this way, unlike by pressing Cancel, any
custom palette would be lost when the dialog was next opened, and so on.
Resolve this by making ::delete-event just do GTK_RESPONSE_CANCEL, so
closing the dialog has the same effect as clicking its Cancel button.
https://bugzilla.gnome.org/show_bug.cgi?id=787444
Since setting a clip is mandatory for almost all widgets, we can as well
change the size-allocate signature to include a out_clip parameter, just
like GtkCssGadget did. And since we now always propagate baselines, we
might as well pass that one on to size-allocate.
This way we can also make sure to transform the clip returned from
size-allocate to parent-coordinates, i.e. the same coordinate space
priv->allocation is in.
This saves some code and lets us reuse the color swatch styling.
Among other things, this fixes a lack of discernible border when
the selected color is very similar to the background.
https://bugzilla.gnome.org/show_bug.cgi?id=680885
Deprecate gtk_widget_push_composite_child, gtk_widget_pop_composite_child,
gtk_widget_set_composite_name, gtk_widget_get_composite_name.
This API is just bloat and was never useful, this patch deprecates
it and removes all internal calls to the composite child APIs
Since themes might want different paddings around the color sample
according to where it's being used, don't hardcode a 16px one here.
The theme can specify a padding to get the same effect.
Reported by Christian Persch <chpe@gnome.org>
Instead of going GtkAlignment->GtkFrame->GtkAlignment, just pack a
GtkDrawingArea inside the button, and use halign/margin properties to
get the desired layout.
Rename get/set_color to get/set_rgba and show_alpha to use_alpha,
to match existing GtkColorButton API and let GtkColorButton implement
GtkColorChooser.
