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wayland/window: Don't lose precision in MetaWaylandWindowConfiguration

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Commit 8bdd2aa7 would offset the window position by the difference
between the configured window size and the committed size from the
client to prevent the window from drifting while resizing.

This, however, did not take into account the actual geometry scale, so
when using any scale greater than 1, the window would rapidly drift away
due to that offset.

In order to solve this, we need to make sure we store away the pending
window configuration in the stage coordinate space, in order to not
loose precision. When we then calculate the offset given the result from
the client, it'll use the right scalars, while before, one scalar was in
surface coordinates, while the other in stage coordinates.

https://gitlab.gnome.org/GNOME/mutter/-/issues/1490
This commit is contained in:
Jonas Ådahl 2020-10-29 10:11:15 +01:00 committed by Olivier Fourdan
parent 514b2ff424
commit eaa6efef56
6 changed files with 33 additions and 14 deletions
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7
src/wayland/meta-wayland-legacy-xdg-shell.c
View File

@ -609,8 +609,8 @@ meta_wayland_zxdg_toplevel_v6_send_configure (MetaWaylandZxdgToplevelV6 *xd
fill_states (&states, window);
zxdg_toplevel_v6_send_configure (xdg_toplevel->resource,
configuration->width,
configuration->height,
configuration->width / configuration->scale,
configuration->height / configuration->scale,
&states);
wl_array_release (&states);
@ -1075,7 +1075,8 @@ meta_wayland_zxdg_popup_v6_configure (MetaWaylandShellSurface *shell_surf
zxdg_popup_v6_send_configure (xdg_popup->resource,
x, y,
configuration->width, configuration->height);
configuration->width / configuration->scale,
configuration->height / configuration->scale);
meta_wayland_zxdg_surface_v6_send_configure (xdg_surface, configuration);
}

8
src/wayland/meta-wayland-window-configuration.c
View File

@ -29,6 +29,7 @@ meta_wayland_window_configuration_new (int x,
int y,
int width,
int height,
int scale,
MetaMoveResizeFlags flags,
MetaGravity gravity)
{
@ -46,6 +47,7 @@ meta_wayland_window_configuration_new (int x,
.width = width,
.height = height,
.scale = scale,
.gravity = gravity,
.flags = flags,
};
@ -57,7 +59,8 @@ MetaWaylandWindowConfiguration *
meta_wayland_window_configuration_new_relative (int rel_x,
int rel_y,
int width,
int height)
int height,
int scale)
{
MetaWaylandWindowConfiguration *configuration;
@ -72,6 +75,8 @@ meta_wayland_window_configuration_new_relative (int rel_x,
.has_size = TRUE,
.width = width,
.height = height,
.scale = scale,
};
return configuration;
@ -85,6 +90,7 @@ meta_wayland_window_configuration_new_empty (void)
configuration = g_new0 (MetaWaylandWindowConfiguration, 1);
*configuration = (MetaWaylandWindowConfiguration) {
.serial = ++global_serial_counter,
.scale = 1,
};
return configuration;

5
src/wayland/meta-wayland-window-configuration.h
View File

@ -43,6 +43,7 @@ struct _MetaWaylandWindowConfiguration
int width;
int height;
int scale;
MetaGravity gravity;
MetaMoveResizeFlags flags;
};
@ -51,13 +52,15 @@ MetaWaylandWindowConfiguration * meta_wayland_window_configuration_new (int
int y,
int width,
int height,
int scale,
MetaMoveResizeFlags flags,
MetaGravity gravity);
MetaWaylandWindowConfiguration * meta_wayland_window_configuration_new_relative (int rel_x,
int rel_y,
int width,
int height);
int height,
int scale);
MetaWaylandWindowConfiguration * meta_wayland_window_configuration_new_empty (void);

3
src/wayland/meta-wayland-wl-shell.c
View File

@ -657,7 +657,8 @@ wl_shell_surface_role_configure (MetaWaylandShellSurface *shell_surface,
wl_shell_surface_send_configure (wl_shell_surface->resource,
0,
configuration->width, configuration->height);
configuration->width / configuration->scale,
configuration->height / configuration->scale);
wl_shell_surface->emulated_ack_configure_serial = configuration->serial;
}

13
src/wayland/meta-wayland-xdg-shell.c
View File

@ -700,8 +700,8 @@ meta_wayland_xdg_toplevel_send_configure (MetaWaylandXdgToplevel *xdg_to
fill_states (xdg_toplevel, &states);
xdg_toplevel_send_configure (xdg_toplevel->resource,
configuration->width,
configuration->height,
configuration->width / configuration->scale,
configuration->height / configuration->scale,
&states);
wl_array_release (&states);
@ -1250,7 +1250,8 @@ meta_wayland_xdg_popup_configure (MetaWaylandShellSurface *shell_surface,
}
xdg_popup_send_configure (xdg_popup->resource,
x, y,
configuration->width, configuration->height);
configuration->width / configuration->scale,
configuration->height / configuration->scale);
meta_wayland_xdg_surface_send_configure (xdg_surface, configuration);
}
@ -2046,8 +2047,10 @@ meta_wayland_xdg_positioner_to_placement (MetaWaylandXdgPositioner *xdg_position
}
if (configuration->has_size)
{
parent_rect.width = configuration->width;
parent_rect.height = configuration->height;
parent_rect.width =
configuration->width / configuration->scale;
parent_rect.height =
configuration->height / configuration->scale;
}
}
else if (xdg_positioner->has_parent_size)

11
src/wayland/meta-window-wayland.c
View File

@ -59,6 +59,7 @@ struct _MetaWindowWayland
int last_sent_height;
int last_sent_rel_x;
int last_sent_rel_y;
int last_sent_geometry_scale;
MetaGravity last_sent_gravity;
gboolean has_been_shown;
@ -192,6 +193,7 @@ surface_state_changed (MetaWindow *window)
wl_window->last_sent_y,
wl_window->last_sent_width,
wl_window->last_sent_height,
wl_window->last_sent_geometry_scale,
META_MOVE_RESIZE_STATE_CHANGED,
wl_window->last_sent_gravity);
@ -256,8 +258,8 @@ meta_window_wayland_move_resize_internal (MetaWindow *window,
* to the Wayland surface. */
geometry_scale = meta_window_wayland_get_geometry_scale (window);
configured_width = constrained_rect.width / geometry_scale;
configured_height = constrained_rect.height / geometry_scale;
configured_width = constrained_rect.width;
configured_height = constrained_rect.height;
/* For wayland clients, the size is completely determined by the client,
* and while this allows to avoid some trickery with frames and the resulting
@ -318,7 +320,8 @@ meta_window_wayland_move_resize_internal (MetaWindow *window,
meta_wayland_window_configuration_new_relative (rel_x,
rel_y,
configured_width,
configured_height);
configured_height,
geometry_scale);
meta_window_wayland_configure (wl_window, configuration);
wl_window->last_sent_rel_x = rel_x;
@ -370,6 +373,7 @@ meta_window_wayland_move_resize_internal (MetaWindow *window,
configured_y,
configured_width,
configured_height,
geometry_scale,
flags,
gravity);
meta_window_wayland_configure (wl_window, configuration);
@ -385,6 +389,7 @@ meta_window_wayland_move_resize_internal (MetaWindow *window,
wl_window->last_sent_y = configured_y;
wl_window->last_sent_width = configured_width;
wl_window->last_sent_height = configured_height;
wl_window->last_sent_geometry_scale = geometry_scale;
wl_window->last_sent_gravity = gravity;
if (can_move_now)