mutter/src/wayland/meta-wayland-window-configuration.c
Aleksandr Mezin 236e9ec68f wayland/window: Correct detection whether to send configure
When deciding if `configure` event should be sent,
`meta_window_wayland_move_resize_internal` compares requested window size
with `window->rect` size. However, `window->rect` is only updated when `commit`
is received. So the following sequence produces incorrect result:

1. a window initially has size `size1`
2. `move_resize_internal` is called with `size2`. `configure` is sent
3. `move_resize_internal` is called with `size1` to restore original size,
but `commit` for `size2` haven't arrived yet. So `window->rect` still has size
`size1`, and thus new `configure` is not sent
4. `commit` for `size2` arrives, window changes size to `size2`

Expected window size in the end: `size1`
Actual: `size2`

To fix the issue, take size from pending `configure` events into account.

Fixes https://gitlab.gnome.org/GNOME/mutter/-/issues/1627

Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/1755>
2021-03-12 16:25:10 +00:00

141 lines
4.0 KiB
C

/*
* Copyright (C) 2019 Red Hat
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of the
* License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
* 02111-1307, USA.
*
*/
#include "config.h"
#include "wayland/meta-wayland-window-configuration.h"
#include "wayland/meta-window-wayland.h"
static uint32_t global_serial_counter = 0;
static gboolean
is_window_size_fixed (MetaWindow *window)
{
if (meta_window_is_fullscreen (window))
return TRUE;
if (meta_window_get_maximized (window) |
(META_MAXIMIZE_VERTICAL | META_MAXIMIZE_VERTICAL))
return TRUE;
if (meta_window_get_tile_mode (window) != META_TILE_NONE)
return TRUE;
return FALSE;
}
MetaWaylandWindowConfiguration *
meta_wayland_window_configuration_new (MetaWindow *window,
int x,
int y,
int width,
int height,
int scale,
MetaMoveResizeFlags flags,
MetaGravity gravity)
{
MetaWaylandWindowConfiguration *configuration;
MetaWindowWayland *wl_window = META_WINDOW_WAYLAND (window);
int pending_width;
int pending_height;
meta_window_wayland_get_pending_size (wl_window,
&pending_width,
&pending_height);
configuration = g_new0 (MetaWaylandWindowConfiguration, 1);
*configuration = (MetaWaylandWindowConfiguration) {
.serial = ++global_serial_counter,
.scale = scale,
.gravity = gravity,
.flags = flags,
};
if (flags & META_MOVE_RESIZE_MOVE_ACTION ||
window->rect.x != x ||
window->rect.y != y)
{
configuration->has_position = TRUE;
configuration->x = x;
configuration->y = y;
}
if (flags & META_MOVE_RESIZE_RESIZE_ACTION ||
is_window_size_fixed (window) ||
pending_width != width ||
pending_height != height)
{
configuration->has_size = TRUE;
configuration->width = width;
configuration->height = height;
}
return configuration;
}
MetaWaylandWindowConfiguration *
meta_wayland_window_configuration_new_relative (int rel_x,
int rel_y,
int width,
int height,
int scale)
{
MetaWaylandWindowConfiguration *configuration;
configuration = g_new0 (MetaWaylandWindowConfiguration, 1);
*configuration = (MetaWaylandWindowConfiguration) {
.serial = ++global_serial_counter,
.has_relative_position = TRUE,
.rel_x = rel_x,
.rel_y = rel_y,
.has_size = TRUE,
.width = width,
.height = height,
.scale = scale,
};
return configuration;
}
MetaWaylandWindowConfiguration *
meta_wayland_window_configuration_new_empty (void)
{
MetaWaylandWindowConfiguration *configuration;
configuration = g_new0 (MetaWaylandWindowConfiguration, 1);
*configuration = (MetaWaylandWindowConfiguration) {
.serial = ++global_serial_counter,
.scale = 1,
};
return configuration;
}
void
meta_wayland_window_configuration_free (MetaWaylandWindowConfiguration *configuration)
{
g_free (configuration);
}