This patch adds another commented algorythm to find the collective
minimum and natural height for a said width of a horizontally oriented
box (or the opposite). The algorithm works quite well and can be optimized
a bit more - currently its commented because GtkLabel cannot effectively
do width-for-height calculations (doh).
Further, this patch returns an is_height_for_width() preference depending
on the boxes orientation (vertical boxes are width-for-height).
Added an indicator telling whether a widget prefers to be allocated
as height-for-width or width-for-height. Usually this depends on the
orientation of a container or the nature of a content widget like GtkLabel.
This indicator is only used in the seldom case where a parent is allocating
free space to the child and the child can flow in either direction, GtkWindow
and GtkScrolledWindow are users of this api.
In order for natural size information to cascade correctly up through
the ancestry GtkBox needs to report height-for-width and width-for-height,
this patch includes an implementation for both in both orientations, one
of them is commented for now as its much too cpu intensive to actually use.
Merged in fixes from the old branch in a patch prepared by Matthias Clasen,
added some fixes of my own to make sure that label wrapping follows allocation
and not requisition at show time (allocate time).
It doesn't make sense to determine an index into an array, if
you are going to sort the array afterwards...pointed out in
bug 615128 by Florian Scandella.
Instead of implementing ->get_desired_size() on GtkBin, which
cant really be done because border widths are in the domain of
the concrete subclasses; here we implement only the get_height_for_width
and get_width_for_height apis - GtkBin subclasses whom might have a
variable border width depending on allocations need to write their
own height-for-width implementations.
Fixed gtksizegroup.c:do_size_request() to never force an initial requisition
as some widgets expect it to remain unchanged across resizes (GtkImage
with pixbufs/filenames assigned is one of these cases).
gtk_box_size_allocate() was forgetting to fetch the minimum
size for children when allocating in homogeneous mode and then
accessing the uninitialized allocated values in that case, fixed.
With this commit it is possible to use ellipsizing text
in the combobox's cell renderers and have them desire to
expand to natural size when placed in a GtkBox.
Ever since size groups gtk_widget_size_request() can be used in place
of gtk_widget_get_child_requisition(), deprecating both now in favor
of gtk_extended_layout_get_desired_size().
collapse get_fast_child_requisition && get_fast_natural_size into
a single get_fast_size() function which uses the possibly hard coded
minimum request as a minimum value for the returned desired size
(this fixes cases where widgets unwarily return height-for-width
with minimum size > natural size).
Added gtk_cell_view_get_desired_size_of_row() to report full
extended layout information for a said row, this obsoletes
gtk_cell_view_get_size_of_row(). Also make GtkCellView queue
a resize on itself when cell renderers are added/removed.
GtkAlignment is already using the height for width api to align
the child in the cases where space is available, but also needed
to implement the extended layout in order to reflect natural sizes
to parent widgets.
Added a new interface to extend layout information of GtkCellRenderers,
GtkCellRenderer is a prerequisite of GtkExtendedCellIface and provides
a base implementation of ->get_desired_size() with ->get_size().
Note that the api for GtkExtendedCell differs from GtkExtendedLayout
since the cells need to be passed an additional widget to calculate
sizes contextual to the widget/screen (fonts etc).
As it is not allowed to called gtk_extended_layout_get_desired_size()
on a GtkWidget directly; gtk_widget_get_desired_size() was really an
ambiguous api. This patch removes the added GtkWidget api, calls
the appropriate sizegroup code which in turn envokes the interface
vtable, this patch also accordingly makes GtkWidget a prerequisite
of GtkExtendedLayout (the api doesnt work for cell renderers anyway,
patch comming...).
Currently gdk_screen_get_primary_monitor just returns the first monitor,
in this case but both the panel and now gnome-shell use an additional
heuristic to prefer LVDS as primary if present.
Move this heuristic to gdk_screen_get_primary_monitor to avoid duplicating
it all over the place.
The fallback heuristic is also used when no primary output is set.
https://bugzilla.gnome.org/show_bug.cgi?id=614894
This commit fixes the loop to take into consideration the
child->padding that will be allocated to the child while calculating
full available size. Additionally it fixes the initial positioning
of child widgets when packed at the end (a special case because the
x position used starts from the end of the box).
When doing size-requests and get_natural_size() calls, use 0 as
the base value instead of -1, because size_request code assumes
that widget->requesition is initialized at 0.
