This fixes monitor enter and leave events on X11, and probably other
things. Previously, it looks like the coordinates were relative to the
top left corner of the window shadow and so never changed.
This is implemented using a new xdg_toplevel `suspended` state, and is
meant for allowing applications to know when they can stop doing
unnecessary work and thus save power.
In the other backends, the `suspended` state is set at the same time as
`minimized` as it's the closest there is to traditional windowing
systems.
The Expose events following a ConfigureNotify may arrive at
a time that we did not resize the surface yet, making these
expose events a no-op. Even though gsk/gtk take care of the
window content itself, this might lead to unrendered portions
of the window shadow.
This may be seen with GSK_RENDERER=cairo and GDK_BACKEND=x11,
attempting to tile a window (e.g. gtk4-demo) left or right.
The window will show black rectangles or other artifacts in
the window shadow areas that correspond to the newly painted
portions (as the window needs to expand vertically).
In order to fix this with a similar behavior to Wayland,
consider ourselves the whole surface invalidated after resize,
in order to ensure everything is painted from scratch.
Doing it on hide() is not enough, since in some edge cases we didn't
ever actually map, we just attempted to compute the size, e.g. in
response to a ConfigureNotify event, then the window was destroyed.
Related: https://gitlab.gnome.org/GNOME/mutter/-/issues/2678
In the way towards deprecating gdk_display_notify_startup_complete(),
make gdk_toplevel_set_startup_id() on X11 perform this piece of messaging
itself. It should be harmless that the message is emitted twice, if
callers do still use that API.
Currently, the GdkSurfaceX11 implementation relies that the upper
layers hid the surface before destruction, and that no
GdkSurfaceClass.compute_resize happened between them. If these
circumstances happened, there would be a compute_size timeout left
dangling after the surface got destroyed, poking at incorrect data
later on. Something that looks like this was reported in the
recent mutter-x11-frames "SSD frames server":
mutter-x11-frames:423016): GLib-GObject-WARNING **: 19:41:16.869: invalid unclassed pointer in cast to 'GtkWindow'
Thread 1 "mutter-x11-fram" received signal SIGTRAP, Trace/breakpoint trap.
g_logv (log_domain=0x7ffff7f7c4f8 "GLib-GObject", log_level=G_LOG_LEVEL_WARNING, format=<optimized out>, args=<optimized out>) at ../../../glib/gmessages.c:1433
1433 ../../../glib/gmessages.c: No such file or directory.
(gdb) bt
#0 g_logv (log_domain=0x7ffff7f7c4f8 "GLib-GObject", log_level=G_LOG_LEVEL_WARNING, format=<optimized out>, args=<optimized out>) at ../../../glib/gmessages.c:1433
#1 0x00007ffff73470ff in g_log (log_domain=log_domain@entry=0x7ffff7f7c4f8 "GLib-GObject", log_level=log_level@entry=G_LOG_LEVEL_WARNING, format=format@entry=0x7ffff7f84da8 "invalid unclassed pointer in cast to '%s'")
at ../../../glib/gmessages.c:1471
#2 0x00007ffff7f72892 in g_type_check_instance_cast (type_instance=type_instance@entry=0x5555558e04b0, iface_type=<optimized out>) at ../../../gobject/gtype.c:4144
#3 0x00007ffff791e77d in toplevel_compute_size (toplevel=<optimized out>, size=0x7fffffffe170, widget=0x5555558e04b0) at ../../../gtk/gtkwindow.c:4227
#4 0x00007ffff7f4f3b0 in g_closure_invoke (closure=0x555555898cc0, return_value=return_value@entry=0x0, n_param_values=2, param_values=param_values@entry=0x7fffffffdeb0, invocation_hint=invocation_hint@entry=0x7fffffffde30)
at ../../../gobject/gclosure.c:832
#5 0x00007ffff7f62076 in signal_emit_unlocked_R
(node=node@entry=0x55555588feb0, detail=detail@entry=0, instance=instance@entry=0x55555560e990, emission_return=emission_return@entry=0x0, instance_and_params=instance_and_params@entry=0x7fffffffdeb0)
at ../../../gobject/gsignal.c:3796
#6 0x00007ffff7f68bf5 in g_signal_emit_valist (instance=<optimized out>, signal_id=<optimized out>, detail=<optimized out>, var_args=var_args@entry=0x7fffffffe050) at ../../../gobject/gsignal.c:3549
#7 0x00007ffff7f68dbf in <emit signal ??? on instance 0x55555560e990 [GdkX11Toplevel]> (instance=<optimized out>, signal_id=<optimized out>, detail=detail@entry=0) at ../../../gobject/gsignal.c:3606
#8 0x00007ffff7a8de96 in gdk_toplevel_notify_compute_size (toplevel=<optimized out>, size=size@entry=0x7fffffffe170) at ../../../gdk/gdktoplevel.c:112
#9 0x00007ffff7a4b15a in compute_toplevel_size (surface=surface@entry=0x55555560e990 [GdkX11Toplevel], update_geometry=update_geometry@entry=1, width=width@entry=0x7fffffffe220, height=height@entry=0x7fffffffe224)
at ../../../gdk/x11/gdksurface-x11.c:281
#10 0x00007ffff7a4c3b2 in compute_size_idle (user_data=0x55555560e990) at ../../../gdk/x11/gdksurface-x11.c:356
#11 0x00007ffff733f67f in g_main_dispatch (context=0x55555563f6e0) at ../../../glib/gmain.c:3444
#12 g_main_context_dispatch (context=context@entry=0x55555563f6e0) at ../../../glib/gmain.c:4162
#13 0x00007ffff733fa38 in g_main_context_iterate (context=0x55555563f6e0, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at ../../../glib/gmain.c:4238
#14 0x00007ffff733fcef in g_main_loop_run (loop=loop@entry=0x5555560874a0) at ../../../glib/gmain.c:4438
#15 0x0000555555557de0 in main (argc=<optimized out>, argv=<optimized out>) at ../src/frames/main.c:68
It perhaps makes sense to warn in these situations, but either way
it sounds like gdk_surface_x11_finalize() could enforce the correct
behavior by ensuring there is no dangling timeouts/data. This commit
does that.
If we take the early return we don't unscale this at the bottom of the
function, causing wrong coordinates in HiDPI screens.
This bug also affects GTK3 (I noticed this running Firefox tests on X).
Not updating shadow size unconditionally would lead to shadow size not
being set on map, which would lead mutter to think that we are a Window
without extents and then become confused when we suddenly set some.
Make sure that doesn't happen by always having shadows set on map, just
like GTK3.
Fixes#4136
With gtkmm, when using `Application()`, the display is initialized
before we know the application name and therefore, the program class
associated to the display is NULL.
Instead of providing a default value, we set it equal to program name
when NULL. Moreover, we give up on capitalizing the class name to keep
the code super simple. Also, not using a capitalized name is
consistent with `gdk_x11_display_open()`. If someone has a good reason
to use a capitalized name, here is how to do it.
```c
class_hint = XAllocClassHint ();
class_hint->res_name = (char *) g_get_prgname ();
if (display_x11->program_class)
{
class_hint->res_class = (char *) g_strdup (display_x11->program_class);
}
else if (class_hint->res_name && class_hint->res_name[0])
{
class_hint->res_class = (char *) g_strdup (class_hint->res_name);
class_hint->res_class[0] = g_ascii_toupper (class_hint->res_class[0]);
}
XSetClassHint (xdisplay, impl->xid, class_hint);
g_free (class_hint->res_class);
XFree (class_hint);
```
Fix eff53c023a ("x11: set a default value for program_class")
It is good practice for (floating) window managers to respect explicit
position hints from clients (as long as the window wouldn't end up
off-screen etc.).
Before commit 13d3afa56e, GTK had a flag for setting the PPosition hint,
but now does so unconditionally. However the real intention is to *not*
request a fixed position, so don't do that.
Now that we have the display's context to hook into, we can use it to
construct other GL contexts and don't need a GdkSurface vfunc anymore.
This has the added benefit that backends can have different GdkGLContext
classes on the display and get new GLContexts generated from them, so
we get multiple GL backend support per GDK backend for free.
I originally wanted to make this a vfunc on GdkGLContextClass, but
it turns out all the abckends would just call g_object_new() anyway.
Avoids having to use private data, though the benefit is somewhat
limited as we still have to put the destructor in the egl code and can't
just put it in gdk_surface_x11_finalize().
We were calling _gdk_surface_update_size() every frame, even if the
window size didn't change. This would cause us to discard all cached
buffers and redraw the whole screen.
This was BAD.
