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backends/x11: Draw our own cursor sprite when running nested

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Use a specialized cursor renderer when running as a nested Wayand
compositor. This new renderer sets an empty X11 cursor and draws the
cursor as part of the stage using the generic cursor renderer drawing
path.

https://bugzilla.gnome.org/show_bug.cgi?id=744932
This commit is contained in:
Jonas Ådahl 2015-07-17 10:40:51 +08:00
parent 83c17134f1
commit 8900bd2f5c
4 changed files with 143 additions and 1 deletions
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2
src/Makefile.am
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@ -96,6 +96,8 @@ libmutter_la_SOURCES = \
backends/x11/meta-barrier-x11.h \
backends/x11/meta-cursor-renderer-x11.c \
backends/x11/meta-cursor-renderer-x11.h \
backends/x11/nested/meta-cursor-renderer-x11-nested.c \
backends/x11/nested/meta-cursor-renderer-x11-nested.h \
backends/x11/meta-idle-monitor-xsync.c \
backends/x11/meta-idle-monitor-xsync.h \
backends/x11/meta-input-settings-x11.c \

14
src/backends/x11/meta-backend-x11.c
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@ -40,6 +40,7 @@
#include "meta-idle-monitor-xsync.h"
#include "meta-monitor-manager-xrandr.h"
#include "backends/meta-monitor-manager-dummy.h"
#include "backends/x11/nested/meta-cursor-renderer-x11-nested.h"
#include "meta-cursor-renderer-x11.h"
#ifdef HAVE_WAYLAND
#include "wayland/meta-wayland.h"
@ -521,7 +522,20 @@ meta_backend_x11_create_monitor_manager (MetaBackend *backend)
static MetaCursorRenderer *
meta_backend_x11_create_cursor_renderer (MetaBackend *backend)
{
MetaBackendX11 *x11 = META_BACKEND_X11 (backend);
MetaBackendX11Private *priv = meta_backend_x11_get_instance_private (x11);
switch (priv->mode)
{
case META_BACKEND_X11_MODE_COMPOSITOR:
return g_object_new (META_TYPE_CURSOR_RENDERER_X11, NULL);
break;
case META_BACKEND_X11_MODE_NESTED:
return g_object_new (META_TYPE_CURSOR_RENDERER_X11_NESTED, NULL);
break;
default:
g_assert_not_reached ();
}
}
static gboolean

88
src/backends/x11/nested/meta-cursor-renderer-x11-nested.c Normal file
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@ -0,0 +1,88 @@
/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
/*
* Copyright (C) 2015 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:
* Jonas Ådahl <jadahl@gmail.com>
*/
#include "config.h"
#include "backends/x11/nested/meta-cursor-renderer-x11-nested.h"
#include "backends/x11/meta-backend-x11.h"
struct _MetaCursorRendererX11Nested
{
MetaCursorRenderer parent;
};
GType meta_cursor_renderer_x11_nested_get_type (void) G_GNUC_CONST;
G_DEFINE_TYPE (MetaCursorRendererX11Nested, meta_cursor_renderer_x11_nested,
META_TYPE_CURSOR_RENDERER);
static gboolean
meta_cursor_renderer_x11_nested_update_cursor (MetaCursorRenderer *renderer)
{
return FALSE;
}
static Cursor
create_empty_cursor (Display *xdisplay)
{
XcursorImage *image;
XcursorPixel *pixels;
Cursor xcursor;
image = XcursorImageCreate (1, 1);
if (image == NULL)
return None;
image->xhot = 0;
image->yhot = 0;
pixels = image->pixels;
pixels[0] = 0;
xcursor = XcursorImageLoadCursor (xdisplay, image);
XcursorImageDestroy (image);
return xcursor;
}
static void
meta_cursor_renderer_x11_nested_init (MetaCursorRendererX11Nested *x11_nested)
{
MetaBackendX11 *backend = META_BACKEND_X11 (meta_get_backend ());
Window xwindow = meta_backend_x11_get_xwindow (backend);
Display *xdisplay = meta_backend_x11_get_xdisplay (backend);
Cursor empty_xcursor = create_empty_cursor (xdisplay);
XDefineCursor (xdisplay, xwindow, empty_xcursor);
XFreeCursor (xdisplay, empty_xcursor);
}
static void
meta_cursor_renderer_x11_nested_class_init (MetaCursorRendererX11NestedClass *klass)
{
MetaCursorRendererClass *renderer_class = META_CURSOR_RENDERER_CLASS (klass);
renderer_class->update_cursor = meta_cursor_renderer_x11_nested_update_cursor;
}

38
src/backends/x11/nested/meta-cursor-renderer-x11-nested.h Normal file
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@ -0,0 +1,38 @@
/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
/*
* Copyright (C) 2015 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:
* Jonas Ådahl <jadahl@gmail.com>
*/
#ifndef META_CURSOR_RENDERER_X11_NESTED_NESTED_H
#define META_CURSOR_RENDERER_X11_NESTED_NESTED_H
#include <glib-object.h>
#include "backends/meta-cursor-renderer.h"
#define META_TYPE_CURSOR_RENDERER_X11_NESTED (meta_cursor_renderer_x11_nested_get_type ())
G_DECLARE_FINAL_TYPE (MetaCursorRendererX11Nested,
meta_cursor_renderer_x11_nested,
META, CURSOR_RENDERER_X11_NESTED,
MetaCursorRenderer);
#endif /* META_CURSOR_RENDERER_X11_NESTED_NESTED_H */