goldberg_emulator/overlay_experimental/linux/X11_Hook.h
Nemirtingas 1016e7f47f Fix lag on events
Found on sanctum2, returning 0 in XPending & XEventsQueued make the SDL do something else than polling events and makes lag the event loop.
Now the event loop returns 0 when there are no more events.
2019-09-03 17:25:42 +02:00

70 lines
2.1 KiB
C++

#ifndef __INCLUDED_X11_HOOK_H__
#define __INCLUDED_X11_HOOK_H__
#include "../Base_Hook.h"
#ifdef __LINUX__
#ifndef NO_OVERLAY
#include <X11/X.h> // XEvent types
#include <X11/Xlib.h> // XEvent structure
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 game_wnd;
// Functions
X11_Hook();
int check_for_overlay(Display *d, int num_events);
// Hook to X11 window messages
decltype(XEventsQueued)* _XEventsQueued;
decltype(XPeekEvent)* _XPeekEvent;
decltype(XNextEvent)* _XNextEvent;
decltype(XPending)* _XPending;
//decltype(XKeysymToKeycode)* _XKeysymToKeycode;
//decltype(XLookupKeysym)* _XLookupKeysym;
//decltype(XGetGeometry)* _XGetGeometry;
public:
static int MyXEventsQueued(Display * display, int mode);
static int MyXNextEvent(Display* display, XEvent *event);
static int MyXPeekEvent(Display* display, XEvent *event);
static int MyXPending(Display* display);
virtual ~X11_Hook();
void resetRenderState();
void prepareForOverlay(Display *display, Window wnd);
Window get_game_wnd() const{ return game_wnd; }
bool start_hook();
static X11_Hook* Inst();
virtual const char* get_lib_name() const;
inline decltype(XEventsQueued)* get_XEventsQueued() const { return _XEventsQueued; }
inline decltype(XPeekEvent)* get_XPeekEvent() const { return _XPeekEvent; }
inline decltype(XNextEvent)* get_XNextEvent() const { return _XNextEvent; }
inline decltype(XPending)* get_XPending() const { return _XPending; }
inline void loadXEventsQueued(decltype(XEventsQueued)* pfnXEventsQueued) { _XEventsQueued = pfnXEventsQueued; }
inline void loadXPeekEvent(decltype(XPeekEvent)* pfnXPeekEvent) { _XPeekEvent = pfnXPeekEvent; }
inline void loadXNextEvent(decltype(XNextEvent)* pfnXNextEvent) { _XNextEvent = pfnXNextEvent; }
inline void loadXPending(decltype(XPending)* pfnXPending) { _XPending = pfnXPending; }
};
#endif//NO_OVERLAY
#endif//__LINUX__
#endif//__INCLUDED_X11_HOOK_H__