This adds support for OpenGL to the GDK Windows backend using the WGL API
calls, which enables programs that uses the GTK+ GLArea widgets to work on
Windows as well.
This also adds a simple utility function to query for the version of OpenGL
that is supported by the Windows system, like the one provided by the X11
backend.
Many thanks to Alex (and Emmanuele, who started the OpenGL integration in
GTK+) who offered advice and help along the way, as well as the X11 and
Wayland backend for this work to refer to and to model upon.
https://bugzilla.gnome.org/show_bug.cgi?id=740795
As the alignments, strides and image formats may be different across
platforms, make the texture upload a vfunc to allow backends to override
the GL commands for uploading textures for the software implementation for
gdk_gl_texture_from_surface(), if necessary.
Suggested by Alex to avoid copying non-trivial portions of code which would
then add maintainenace burden.
https://bugzilla.gnome.org/show_bug.cgi?id=740795
This drops the maybe_allocate_buffers that re-allocates buffers
at any point. Instead we just set have_buffers to FALSE and have
the buffers re-created when needed.
This also makes the buffer creation code imdeponent and makes it
clean up no longer needed buffers in order to handle being called
multiple times due to the above.
We also ensure we re-allocate the buffers when we're resizing
and the buffers are already created.
We can't combine multiple draws into one for the software fallback,
because each quad has a different texture. And we generally don't
want to make a larger single texture because then we would have
to upload more data.
On creation, we call action_removed() in case the action was missing
from the start. Because we just created the action, 'can_activate' will
always be FALSE here and this function will therefore always do nothing.
We do want the visibility state to be updated though, for the case where
the action is missing but the item should still be visible from the
start.
Update the visibility directly instead of trying to call
action_removed().
https://bugzilla.gnome.org/show_bug.cgi?id=735122
We were only properly setting the "is-visible" flag to TRUE for menu
items with associated actions and not (for example) on submenus.
This was fine because the code for building GtkMenus from models
(correctly) assumed that submenus should always be visible and never
checked the property.
This is not true for the Mac OS code, which actually checked the
property and found it to be false for submenus.
Initialise the property to TRUE so that we get the correct value
reported for items that don't have actions.
https://bugzilla.gnome.org/show_bug.cgi?id=735122
All popover sides have extra margins to possibly hold the tail, this is
accounted for in gtk_popover_get_rect_coords(), and should be accounted
for too in the tail position calculation.
This fixes the gtk_render_frame_gap() warnings seen when a popover is
pushed far too close to window sides.
After b49c7c3421 we were no longer doing a
full revalidate after GTK_CSS_CHANGE_SOURCE changes.
This fixes spurious failures of widgets not properly updating when
changing the theme.
These functions, while added for use by the GTK inspector, are generally
useful to applications that need to resolve what action groups are
available to a particular GtkWidget.
https://bugzilla.gnome.org/show_bug.cgi?id=741386
Without this, the focus will not be inside the top_stack when
we switch to the statistics page and it shows the excuse. This
in turn will make the next page not take focus as expected when
switching away from the statistics page again.
Add notebook-like focus handling: Keep track of the last focused
descendent of each page, and focus it again when switching back
to the page. If there is no last focused child, we move the focus
into the page as if the user had hit Tab.
When using a completion with some custom cells in the cell layout,
if would often size wrong when first presented on screen.
The entry completion is the only place in the entire gtk code base
that calls gtk_tree_view_column_cell_get_size outside of gtktreeview
itself. It calls into the function before the tree view has done some
important validation on its cell state, the net result of which is
only the first element in the gtkcellareabox the entry completion uses
well actually have its size respected.
We now call gtk_widget_get_preferred_size on the tree view before
calling into the individual cell size routines, to guarantee that the
tree view has run its validate_rows routine and cell state is valid.
https://bugzilla.gnome.org/show_bug.cgi?id=741130
Use the new scrollable API for getting non-scrollable borders
and draw over/undershoot at the right place. In practice, this
means that they now appear below treeview headers.
Add a vfunc to return a non-scrollable border around scrollables.
This would be nicer as a property, but we can't add properties
to an interface without breaking 3rd party implementations, so
make this an optional vfunc, and handle it not being set.
