LookingGlass/client/displayservers/Wayland/wayland.c

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/*
Looking Glass - KVM FrameRelay (KVMFR) Client
Copyright (C) 2017-2021 Geoffrey McRae <geoff@hostfission.com>
https://looking-glass.hostfission.com
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
*/
#define _GNU_SOURCE
#include "wayland.h"
#include <assert.h>
#include <errno.h>
#include <fcntl.h>
#include <signal.h>
#include <stdbool.h>
#include <sys/mman.h>
#include <unistd.h>
#include <linux/input.h>
#include <poll.h>
#include <sys/epoll.h>
#include <SDL2/SDL.h>
#include <wayland-client.h>
#if defined(ENABLE_EGL) || defined(ENABLE_OPENGL)
# include <wayland-egl.h>
# include "egl_dynprocs.h"
# include <EGL/eglext.h>
#endif
#include "app.h"
#include "common/debug.h"
#include "common/locking.h"
#include "common/countedbuffer.h"
#include "common/option.h"
#include "wayland-xdg-shell-client-protocol.h"
#include "wayland-xdg-decoration-unstable-v1-client-protocol.h"
#include "wayland-keyboard-shortcuts-inhibit-unstable-v1-client-protocol.h"
#include "wayland-pointer-constraints-unstable-v1-client-protocol.h"
#include "wayland-relative-pointer-unstable-v1-client-protocol.h"
#include "wayland-idle-inhibit-unstable-v1-client-protocol.h"
static struct Option waylandOptions[] =
{
{
.module = "wayland",
.name = "warpSupport",
.description = "Enable cursor warping",
.type = OPTION_TYPE_BOOL,
.value.x_bool = true,
},
{0}
};
static bool waylandEarlyInit(void)
{
// Request to receive EPIPE instead of SIGPIPE when one end of a pipe
// disconnects while a write is pending. This is useful to the Wayland
// clipboard backend, where an arbitrary application is on the other end of
// that pipe.
signal(SIGPIPE, SIG_IGN);
return true;
}
static void waylandSetup(void)
{
option_register(waylandOptions);
}
static bool waylandProbe(void)
{
return getenv("WAYLAND_DISPLAY") != NULL;
}
static bool waylandInit(const LG_DSInitParams params)
{
memset(&wlWm, 0, sizeof(wlWm));
wlWm.warpSupport = option_get_bool("wayland", "warpSupport");
wlWm.display = wl_display_connect(NULL);
if (!waylandPollInit())
return false;
if (!waylandOutputInit())
return false;
if (!waylandRegistryInit())
return false;
if (!waylandIdleInit())
return false;
if (!waylandInputInit())
return false;
if (!waylandWindowInit(params.title, params.fullscreen, params.maximize, params.borderless))
return false;
if (!waylandEGLInit(params.w, params.h))
return false;
if (!waylandCursorInit())
return false;
#ifdef ENABLE_OPENGL
if (params.opengl && !waylandOpenGLInit())
return false;
#endif
wlWm.width = params.w;
wlWm.height = params.h;
return true;
}
static void waylandStartup(void)
{
}
static void waylandShutdown(void)
{
}
static void waylandFree(void)
{
waylandIdleFree();
waylandWindowFree();
waylandInputFree();
waylandOutputFree();
waylandRegistryFree();
wl_display_disconnect(wlWm.display);
}
static bool waylandGetProp(LG_DSProperty prop, void * ret)
{
if (prop == LG_DS_WARP_SUPPORT)
{
*(enum LG_DSWarpSupport*)ret = wlWm.warpSupport ? LG_DS_WARP_SURFACE : LG_DS_WARP_NONE;
return true;
}
return false;
}
struct LG_DisplayServerOps LGDS_Wayland =
{
.setup = waylandSetup,
.probe = waylandProbe,
.earlyInit = waylandEarlyInit,
.init = waylandInit,
.startup = waylandStartup,
.shutdown = waylandShutdown,
.free = waylandFree,
.getProp = waylandGetProp,
#ifdef ENABLE_EGL
.getEGLDisplay = waylandGetEGLDisplay,
.getEGLNativeWindow = waylandGetEGLNativeWindow,
.eglSwapBuffers = waylandEGLSwapBuffers,
#endif
#ifdef ENABLE_OPENGL
.glCreateContext = waylandGLCreateContext,
.glDeleteContext = waylandGLDeleteContext,
.glMakeCurrent = waylandGLMakeCurrent,
.glSetSwapInterval = waylandGLSetSwapInterval,
.glSwapBuffers = waylandGLSwapBuffers,
#endif
.showPointer = waylandShowPointer,
.grabPointer = waylandGrabPointer,
.ungrabPointer = waylandUngrabPointer,
.grabKeyboard = waylandGrabKeyboard,
.ungrabKeyboard = waylandUngrabKeyboard,
.warpPointer = waylandWarpPointer,
.realignPointer = waylandRealignPointer,
.isValidPointerPos = waylandIsValidPointerPos,
.inhibitIdle = waylandInhibitIdle,
.uninhibitIdle = waylandUninhibitIdle,
.wait = waylandWait,
.setWindowSize = waylandSetWindowSize,
.setFullscreen = waylandSetFullscreen,
.getFullscreen = waylandGetFullscreen,
.cbInit = waylandCBInit,
.cbNotice = waylandCBNotice,
.cbRelease = waylandCBRelease,
.cbRequest = waylandCBRequest
};