We remove the resize grip from GtkStatusbar, but keep the code
that makes the content avoid the grip, and adapt it to GtkWindow
grips.
The gtk_status_bar_set/get_has_resize_grip() functions and related
properties are removed.
Allow any window to display a resize grip, in the south-east or
south-west corner, depending on text direction. This is implemented
as a shaped window that gets overlayed on top of whatever content
is there. We add api that allows widgets to avoid the resize grip,
if desired.
The ::has-resize-grip property controls if a window may display
a resize grip. It will only be displayed if the window is resizable
and not maximized.
The size and visual appearance of the resize grip is under theme
control, using the resize-grip-width/height style properties and
the paint_resize_grip style function.
The ownership of the return value for gdk_pixbuf_get_from_window() and
gdk_pixbuf_get_from_surface() was determined by the first argument.
Because that is an ugly design and the functions are new to GTK3, we
decided to adapt them.
And that adaptation was quite easy since almost no one passses anything
but NULL as the first argument.
It turns out that the previous handling of just providing a way to set
visuals just on toplevels was not sufficient. In particular it
complicated the various implementations of the tray icon specification.
This patch reintroduces gtk_widget_set_visual() which behaves very
similar to GTK2's gtk_widget_set_colormap().
A future commit will remove the gtk_window_set_visual() function.
This commit add some text about mult-window ::draw implementations,
pointing out the gtk_cairo_should_draw_window() and
gtk_cairo_transform_to_window() convenience functions.
The function reverses the transform that GTK does before emitting a draw
event. So we can use it in "old" widgets to revert the coordinate system
properly.
It doesn't make sense to keep them separate as GtkSizeRequest requires a
GtkWidget and GtkWidget implements GtkSizeRequest, so you can never have
one without the other.
It also makes the code a lot easier because no casts are required when
calling functions.
Also, the names would translate to gtk_widget_get_width() and people
agreed that this would be a too generic name, so a "preferred" was added
to the names.
So this patch moves the functions:
gtk_size_request_get_request_mode() => gtk_widget_get_request_mode()
gtk_size_request_get_width() => gtk_widget_get_preferred_width()
gtk_size_request_get_height() => gtk_widget_get_preferred_height()
gtk_size_request_get_size() => gtk_widget_get_preferred_size()
gtk_size_request_get_width_for_height() =>
gtk_widget_get_preferred_width_for_height()
gtk_size_request_get_height_for_width() =>
gtk_widget_get_preferred_height_for_width()
... and moves the corresponding vfuncs to the GtkWidgetClass.
The patch also renames the implementations of the vfuncs in widgets to
include the word "preferrred".
