mutter/src/backends/x11/meta-cursor-renderer-x11.c
Jonas Ådahl fcf7c4d0c7 cursor-renderer: Always keep the cursor overlay on the stage
Only when the cursor isn't handled by the backend is the overlay made
visible. This is intended to be used when painting the stage to an
offscreen using clutter_stage_paint_to_(frame)buffer() in a way where
the cursor is always included.

https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/1391
2020-08-05 11:11:38 +02:00

115 lines
3.5 KiB
C

/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
/*
* Copyright (C) 2014 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.
*
* Written by:
* Jasper St. Pierre <jstpierre@mecheye.net>
*/
#include "config.h"
#include "backends/x11/meta-cursor-renderer-x11.h"
#include <X11/extensions/Xfixes.h>
#include "backends/meta-cursor-sprite-xcursor.h"
#include "backends/meta-stage-private.h"
#include "backends/x11/meta-backend-x11.h"
struct _MetaCursorRendererX11Private
{
gboolean server_cursor_visible;
};
typedef struct _MetaCursorRendererX11Private MetaCursorRendererX11Private;
G_DEFINE_TYPE_WITH_PRIVATE (MetaCursorRendererX11, meta_cursor_renderer_x11, META_TYPE_CURSOR_RENDERER);
static gboolean
meta_cursor_renderer_x11_update_cursor (MetaCursorRenderer *renderer,
MetaCursorSprite *cursor_sprite)
{
MetaCursorRendererX11 *x11 = META_CURSOR_RENDERER_X11 (renderer);
MetaCursorRendererX11Private *priv = meta_cursor_renderer_x11_get_instance_private (x11);
MetaBackendX11 *backend = META_BACKEND_X11 (meta_get_backend ());
Window xwindow = meta_backend_x11_get_xwindow (backend);
Display *xdisplay = meta_backend_x11_get_xdisplay (backend);
if (xwindow == None)
{
if (cursor_sprite)
meta_cursor_sprite_realize_texture (cursor_sprite);
return FALSE;
}
gboolean has_server_cursor = FALSE;
if (cursor_sprite && META_IS_CURSOR_SPRITE_XCURSOR (cursor_sprite))
{
MetaCursorSpriteXcursor *sprite_xcursor =
META_CURSOR_SPRITE_XCURSOR (cursor_sprite);
MetaCursor cursor;
cursor = meta_cursor_sprite_xcursor_get_cursor (sprite_xcursor);
if (cursor != META_CURSOR_NONE)
{
Cursor xcursor;
xcursor = meta_create_x_cursor (xdisplay, cursor);
XDefineCursor (xdisplay, xwindow, xcursor);
XFlush (xdisplay);
XFreeCursor (xdisplay, xcursor);
has_server_cursor = TRUE;
}
}
if (has_server_cursor != priv->server_cursor_visible)
{
if (has_server_cursor)
XFixesShowCursor (xdisplay, xwindow);
else
XFixesHideCursor (xdisplay, xwindow);
priv->server_cursor_visible = has_server_cursor;
}
if (cursor_sprite)
meta_cursor_sprite_realize_texture (cursor_sprite);
return priv->server_cursor_visible;
}
static void
meta_cursor_renderer_x11_class_init (MetaCursorRendererX11Class *klass)
{
MetaCursorRendererClass *renderer_class = META_CURSOR_RENDERER_CLASS (klass);
renderer_class->update_cursor = meta_cursor_renderer_x11_update_cursor;
}
static void
meta_cursor_renderer_x11_init (MetaCursorRendererX11 *x11)
{
MetaCursorRendererX11Private *priv = meta_cursor_renderer_x11_get_instance_private (x11);
/* XFixes has no way to retrieve the current cursor visibility. */
priv->server_cursor_visible = TRUE;
}