We can't really just draw by walking down the widget hierarchy, as
this doesn't get the right clipping (so e.g. widgets doing cairo_paint
may draw outside the expected gdkwindow subarea) nor does it let
us paint window backgrounds.
So, we now do multiple draws for each widget, once for each expose event
although we still do it at the same base cairo_t that we get for the
toplevel native window.
We also collect all the windows of a widget so we can expose them inside
the same opacity group if needed.
Rather than scroll via XCopyArea (which we no longer do) we keep an
offscreen buffer of the scrolled area with some extra space outside
the visible area and when we expose the viewport we just blit the
offscreen to the right place.
This lets you register callbacks for when child widgets invalidate
areas of the window read it and/or change it.
For instance, this lets you do rendering effects and keeping offscreen
caches uptodate.
Now that all windows are non-opaque we can simplify the invalidation
a lot. There is no need to clip the invalidate area to child regions,
because we will always redraw everything under all the children.
We only have to handle native childen specially.
We now only do one expose event per native window, so there will
only be one begin/end_paint() call. This means all the work with
implicit paints to combine the paints on a single double buffer
surface is unnecessary, so we can just delete it.
We now consider non-native windows non-opaque, which means any invalid
area in a subwindow will also be invalid all the way up to the nearest
native windows. We take advantage of this by ignoring all expose events
on non-native windows (which typically means just the toplevel) and instead
propagating down the draw() calls to children directly via
gtk_container_propagate_draw.
This is nice as it means we always draw widgets the same way, and it
will let us do some interesting ways in the future.
We also clean up the GtkWidget opacity handling as we can now always
rely on the draing happening via cairo.
NOTE: This change neuters gtk_widget_set_double_buffered for
widgets without native windows
Since we dropped the move region optimization there is really no need
to try carefully keep track of opaque non-overlapped regions, as we
don't use this information to trigger the optimization anymore.
So, by assuming that all windows are non-opaque we can vastly simplify
the clip region stuff. First of all, we don't need clip_region_with_children,
as each window will need to draw under all children anyway. Secondly, we
don't remove overlapping sibling areas from clip_region, as these are
all non-opaque anyway and we need to draw under them
Finally, we don't need to track the layered region anymore as its
essentially unused. The few times something like it is needed we can
compute it explicitly.
For the case of native children of widgets we may cause a repaint
under native windows that are guaranteed to be opaque, but these
will be clipped by the native child anyway.
This basically neuters gdk_window_move_region, gdk_window_scroll
and gdk_window_move_resize, in that they now never copy any bits but
just invalidate the source and destination regions. This is a performance
loss, but the hope is that the simplifications it later allows will let
us recover this performance loss (which mainly affects scrolling).
This makes Wayland and X11 no longer call into XKB and libX11 for these
functions but use GDK's own copy of these functions, just like the
win32, quartz and broadway backends.
A function was doing nothing but calling a function that was in its own
source file doing nothing but calling a function in its own source file
that did nothing.
This is the new GtkPlacesSidebar widget, which is the sidebar used in
GtkFileChooser to display a list of places/folders that the user may
want to use. File managers are encouraged to use this widget for
their own global list of folders.
This is Tristan's *excellent* work, minus the old code for the shortcuts bar - that is all done
in GtkPlacesSidebar now.
The UI gets loaded from a Glade resource; most of the old code to create the UI by hand is gone.
There is still code for save_widgets_create(); this needs to be moved into the UI file, but it
is not a big deal.
gtk_file_chooser_default_init() calls a new post_process_ui() that takes care of all the things
that cannot be done directly in Glade.
Although GtkPlacesSidebar is a public widget, we can't have that in Glade's general catalog
as this branch is not merged into GTK+ proper yet. We'll move the widget to Glade's
catalog when this is done.
This is another step towards making GdkDisplayManager backend-agnostic.
Most of the backends profit from this as their atom implementations
where generic anyway - x11 needed that to allow multiple X displays and
broadway, quartz and wayland don't have the concept of displays.
The X11 backend still did things, so I only #if 0'd some code but did
not actually update anything.
Printing a web page without window.print (which still segfault),
that is Ctrl+P is fixed (does not attempt to execute the
source_changed_handler on a printeroptionwidget that has been
destroyed) by disconnecting this handler in the printeroptionwidget
finalize.
https://bugzilla.gnome.org/show_bug.cgi?id=696622
If the GtkPrintJob is freed too early when the surface has been created
but the job hasn't been sent to the printer, it's possible that the
file print backend tries to write to the io chaneel when it is already
closed. This produces runtime critical warnings:
GLib-CRITICAL **: g_io_channel_write_chars: assertion `channel->is_writeable' failed
https://bugzilla.gnome.org/show_bug.cgi?id=685420
It can happen if the io channel has been closed. In that case
g_io_channel_write_chars() returns early because of a g_return macro
that checks if the io channel is writable. When returning from g_return
macros, the bytes written output parameter is not updated and the error
is not filled, so the error is not detected and the written variable is
used uninitialized. We should check the return value of
g_io_channel_write_chars() to break the loop.
https://bugzilla.gnome.org/show_bug.cgi?id=685419
This reverts commit 666d10ec76.
This change severely broke any treeviews without horizontal
scrollbars. Basically, ellipsization never kicks in, and instead
the treeview content just extends outside the visible area,
rendering it inaccessible. This broke e.g. the control-center
keyboard shortcuts panel, the gnome-disks device list, etc etc.
In the case that the client is started directly by the compositor the
WAYLAND_SOCKET environment variable is set containing the fd to use that was
created by a socketpair.
This environment variable is consumed by a call to wl_display_connect so a
second call will not take advantage of it.
https://bugzilla.gnome.org/show_bug.cgi?id=697673
The creation is async, and the sidebar could be destroyed while the D-Bus proxy is being created.
Signed-off-by: Federico Mena Quintero <federico@gnome.org>
Having the changes for composite widget templates makes it impossible
to merge the places-sidebar branch. So, we will merge that branch,
and *then* apply the changes for composite templates.
This reverts commit bf909f5615.
