goldberg_emulator/overlay_experimental/linux/X11_Hook.h
2022-08-10 03:22:23 -04:00

71 lines
2 KiB
C++

/*
* Copyright (C) 2019-2020 Nemirtingas
* This file is part of the ingame overlay project
*
* The ingame overlay project is free software; you can redistribute it
* and/or modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 3 of the License, or (at your option) any later version.
*
* The ingame overlay project 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with the ingame overlay project; if not, see
* <http://www.gnu.org/licenses/>.
*/
#pragma once
#include <ingame_overlay/Renderer_Hook.h>
#include "../internal_includes.h"
#include <X11/X.h> // XEvent types
#include <X11/Xlib.h> // XEvent structure
#include <X11/Xutil.h> // XEvent keysym
class X11_Hook :
public Base_Hook
{
public:
static constexpr const char* DLL_NAME = "libX11.so";
private:
static X11_Hook* _inst;
// Variables
bool _Hooked;
bool _Initialized;
Window _GameWnd;
// Functions
X11_Hook();
int _CheckForOverlay(Display *d, int num_events);
// Hook to X11 window messages
decltype(::XEventsQueued)* XEventsQueued;
decltype(::XPending)* XPending;
static int MyXEventsQueued(Display * display, int mode);
static int MyXPending(Display* display);
std::function<bool(bool)> _KeyCombinationCallback;
public:
std::string LibraryName;
virtual ~X11_Hook();
void ResetRenderState();
void SetInitialWindowSize(Display* display, Window wnd);
bool PrepareForOverlay(Display *display, Window wnd);
Window GetGameWnd() const{ return _GameWnd; }
bool StartHook(std::function<bool(bool)>& key_combination_callback);
static X11_Hook* Inst();
virtual std::string GetLibraryName() const;
};