_gtk_rbtree_reorder() was moving the node's data while reordering. As we
use the node pointer in the a11y code as a hash key, this didn't work.
So this rewrite changes that. As a bonus, it is less code and faster.
Woohoo!
- Make sure the rotated nodes aren't nil
- Use existing functions for complex computations
- Don't use NULL checks for variables guaranteed to not be NULL/nil
This has one major caveat: The new value is const, so read-only memory.
Any attempt to write to it will cause a crash. Note that we are not ever
supposed to write to it, but bugs happen...
The code used to set nil->parent, which could cause segfaults. Don't do
that. We also need to pass the parent explicitly to the fixup code,
because the node during fixup may be the nil node.
So instead of copying the children and height to the new node, we keep
the old node and copy all the old stuff to it.
This is necessary so the accessibility code can use the node as a key in
the hash table or store the node as a reference to the row instead of
GtkTreeRowReference. And because it already does that (oops), this fixes
a bunch of segfaults with a11y enabled.
gtk_rbtree_adjust() will adjust the summed values of a node and all its
parents in the tree. Currently only implemented by splitting out the
function from gtk_rbtree_free().
Instead of taking the first page and trying to adjust the rect with
random padding values, take the current page, as it's always guaranteed
to be at least as tall as inactive tabs.
This fixes some annoying 1px drawing artifacts while switching tabs when
the theme disables notebook padding.
https://bugzilla.gnome.org/show_bug.cgi?id=664494
Similar to GtkNotebook, GtkFrame was only allocating space for the
padding width, and not the border.
This could be seen by just running tests/testframe. With a theme that
renders frame borders, setting xthickness = 0 in the test draws the
button border over the frame border, which is wrong.
https://bugzilla.gnome.org/show_bug.cgi?id=664342
Turned assertion into silent return.
This assertion is only hit when dragging from an empty tree view. In
this case, gtk_tree_view_begin_drag() is triggered from gtkdnd.c and not
from gtk_tree_view_maybe_begin_dragging_row(). We actually want to
cancel the drag at this point, but that is not possible with the GTK+
API as far as I can see.
The alternative is to not allowing the drag to start. This could be
done by simply unsetting the tree view as drag source when it is empty
and setting it as drag source again when rows are added. I didn't
choose to go with this for now, since this will likely break third party
code.
There was some regressions from the recent display line fix;
while fixing it improve the test coverage and make GtkEntry
and GtkTextView return identical results.
gdk_cairo_region_create_from_surface doesn't work correctly on PPC.
This is most prominently seen with the GTK window resize grip, the
shape of which is mirrored every eight pixels horizontally.
At the same time, use an A1 surface for the resize grip shape to
eliminates an A8->A1 surface conversion.
