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eis: Add "viewport" interface

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A MetaEisViewport represents an absolute region backend by e.g. a
pointer device. There are two kinds: a standalone viewport, which
corresponds to a viewport that has no neighbours, and a non-standalone,
which represents a region of a global coordinate space.

The reason for having non-standalone viewports is to allow to mirror the
logical monitor layout of a desktop, while the standalone are meant to
represent things that are not part of the logical monitor layout.

Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/3228>
This commit is contained in:
Jonas Ådahl 2023-08-28 22:16:06 +02:00 committed by Marge Bot
parent 12c7c1bffb
commit 271fb86b15
4 changed files with 153 additions and 0 deletions
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80
src/backends/meta-eis-viewport.c Normal file
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@ -0,0 +1,80 @@
/*
* Copyright (C) 2023 Red Hat Inc.
*
* 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, see <http://www.gnu.org/licenses/>.
*
*/
#include "config.h"
#include "backends/meta-eis-viewport.h"
G_DEFINE_INTERFACE (MetaEisViewport, meta_eis_viewport, G_TYPE_OBJECT)
static void
meta_eis_viewport_default_init (MetaEisViewportInterface *iface)
{
}
gboolean
meta_eis_viewport_is_standalone (MetaEisViewport *viewport)
{
return META_EIS_VIEWPORT_GET_IFACE (viewport)->is_standalone (viewport);
}
const char *
meta_eis_viewport_get_mapping_id (MetaEisViewport *viewport)
{
return META_EIS_VIEWPORT_GET_IFACE (viewport)->get_mapping_id (viewport);
}
gboolean
meta_eis_viewport_get_position (MetaEisViewport *viewport,
int *out_x,
int *out_y)
{
return META_EIS_VIEWPORT_GET_IFACE (viewport)->get_position (viewport,
out_x,
out_y);
}
void
meta_eis_viewport_get_size (MetaEisViewport *viewport,
int *out_width,
int *out_height)
{
META_EIS_VIEWPORT_GET_IFACE (viewport)->get_size (viewport,
out_width,
out_height);
}
double
meta_eis_viewport_get_physical_scale (MetaEisViewport *viewport)
{
return META_EIS_VIEWPORT_GET_IFACE (viewport)->get_physical_scale (viewport);
}
gboolean
meta_eis_viewport_transform_coordinate (MetaEisViewport *viewport,
double x,
double y,
double *out_x,
double *out_y)
{
return META_EIS_VIEWPORT_GET_IFACE (viewport)->transform_coordinate (viewport,
x,
y,
out_x,
out_y);
}

70
src/backends/meta-eis-viewport.h Normal file
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@ -0,0 +1,70 @@
/*
* Copyright (C) 2023 Red Hat Inc.
*
* 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, see <http://www.gnu.org/licenses/>.
*
*/
#pragma once
#include <glib-object.h>
#define META_TYPE_EIS_VIEWPORT (meta_eis_viewport_get_type ())
G_DECLARE_INTERFACE (MetaEisViewport, meta_eis_viewport,
META, EIS_VIEWPORT, GObject)
struct _MetaEisViewportInterface
{
GTypeInterface parent_iface;
gboolean (* is_standalone) (MetaEisViewport *viewport);
const char * (* get_mapping_id) (MetaEisViewport *viewport);
gboolean (* get_position) (MetaEisViewport *viewport,
int *out_x,
int *out_y);
void (* get_size) (MetaEisViewport *viewport,
int *out_width,
int *out_height);
double (* get_physical_scale) (MetaEisViewport *viewport);
gboolean (* transform_coordinate) (MetaEisViewport *viewport,
double x,
double y,
double *out_x,
double *out_y);
};
gboolean meta_eis_viewport_is_standalone (MetaEisViewport *viewport);
const char * meta_eis_viewport_get_mapping_id (MetaEisViewport *viewport);
gboolean meta_eis_viewport_get_position (MetaEisViewport *viewport,
int *out_x,
int *out_y);
void meta_eis_viewport_get_size (MetaEisViewport *viewport,
int *out_width,
int *out_height);
double meta_eis_viewport_get_physical_scale (MetaEisViewport *viewport);
gboolean meta_eis_viewport_transform_coordinate (MetaEisViewport *viewport,
double x,
double y,
double *out_x,
double *out_y);

1
src/backends/meta-eis.h
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@ -23,6 +23,7 @@
#include <glib-object.h>
#include "backends/meta-backend-types.h"
#include "backends/meta-eis-viewport.h"
typedef enum _MetaEisDeviceTypes
{

2
src/meson.build
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@ -544,6 +544,8 @@ if have_remote_desktop
'backends/meta-eis.h',
'backends/meta-eis-client.c',
'backends/meta-eis-client.h',
'backends/meta-eis-viewport.c',
'backends/meta-eis-viewport.h',
'backends/meta-remote-desktop.c',
'backends/meta-remote-desktop.h',
'backends/meta-remote-desktop-session.c',