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[client] input: abstract guest input backends

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Introduce LG_InputOps and route keyboard and mouse input through the
active video transport when it provides an input backend.

Keep SPICE as the fallback and force it while the SPICE display is
active. Add atomic shared/exclusive locking for safe backend changes.
This commit is contained in:
Geoffrey McRae
2026-08-08 21:23:32 +10:00
parent 04fd31219c
commit f495e5b7ba
17 changed files with 711 additions and 105 deletions
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50
client/include/input.h Normal file
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/**
* Looking Glass
* Copyright © 2017-2026 The Looking Glass Authors
* https://looking-glass.io
*
* 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_LG_CLIENT_INPUT_
#define _H_LG_CLIENT_INPUT_
#include "interface/input.h"
extern const LG_InputOps LGI_Spice;
void lgInput_init(void);
void lgInput_free(void);
void lgInput_setFallback(const LG_InputOps * ops, void * opaque);
void lgInput_setTransport(const LG_InputOps * ops, void * opaque);
void lgInput_dropTransport(void);
void lgInput_useTransport(bool enable);
bool lgInput_available(void);
bool lgInput_supports(LG_InputSupport support);
bool lgInput_keyDown(int key);
bool lgInput_keyUp(int key);
bool lgInput_keyboardLEDs(bool numLock, bool capsLock, bool scrollLock);
void lgInput_releaseKeys(void);
bool lgInput_mouseMotion(int32_t x, int32_t y);
bool lgInput_mousePosition(uint32_t x, uint32_t y, uint32_t width,
uint32_t height);
bool lgInput_mousePress(unsigned int button);
bool lgInput_mouseRelease(unsigned int button);
#endif