LookingGlass/client/include/interface/displayserver.h

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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
*/
#ifndef _H_I_DISPLAYSERVER_
#define _H_I_DISPLAYSERVER_
#include <stdbool.h>
#include <SDL2/SDL.h>
#include <SDL2/SDL_syswm.h>
typedef enum LG_ClipboardData
{
LG_CLIPBOARD_DATA_TEXT = 0,
LG_CLIPBOARD_DATA_PNG,
LG_CLIPBOARD_DATA_BMP,
LG_CLIPBOARD_DATA_TIFF,
LG_CLIPBOARD_DATA_JPEG,
LG_CLIPBOARD_DATA_NONE // enum max, not a data type
}
LG_ClipboardData;
typedef enum LG_DSProperty
{
/**
* returns the maximum number of samples supported
* if not implemented LG assumes no multisample support
* return data type: int
*/
LG_DS_MAX_MULTISAMPLE,
/**
* returns if the platform is warp capable
* if not implemented LG assumes that the platform is warp capable
* return data type: bool
*/
LG_DS_WARP_SUPPORT,
}
LG_DSProperty;
typedef void (* LG_ClipboardReplyFn)(void * opaque, const LG_ClipboardData type,
uint8_t * data, uint32_t size);
struct LG_DisplayServerOps
{
const SDL_SYSWM_TYPE subsystem;
/* called before SDL has been initialized */
bool (*earlyInit)(void);
/* called after SDL has been initialized */
void (*init)(SDL_SysWMinfo * info);
/* called at startup after window creation, renderer and/or SPICE is ready */
void (*startup)();
/* called just before final window destruction, before final free */
void (*shutdown)();
/* final free */
void (*free)();
/*
* return a system specific property, returns false if unsupported or failure
* if the platform does not support/implement the requested property the value
* of `ret` must not be altered.
*/
bool (*getProp)(LG_DSProperty prop, void * ret);
/* event filter, return true if the event has been handled */
bool (*eventFilter)(SDL_Event * event);
/* dm specific cursor implementations */
void (*grabPointer)();
void (*ungrabPointer)();
void (*grabKeyboard)();
void (*ungrabKeyboard)();
//exiting = true if the warp is to leave the window
void (*warpMouse)(int x, int y, bool exiting);
/* clipboard support */
bool (* cbInit)(void);
void (* cbNotice)(LG_ClipboardData type);
void (* cbRelease)(void);
void (* cbRequest)(LG_ClipboardData type);
};
#endif