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SDL: Implement touchscreen support

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This commit is contained in:
Gregor Parzefall 2024-01-13 14:07:10 +01:00 committed by sfan5
parent a2b6244f54
commit 7df45b4cf3
2 changed files with 47 additions and 1 deletions
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46
source/Irrlicht/CIrrDeviceSDL.cpp
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@ -229,7 +229,7 @@ CIrrDeviceSDL::CIrrDeviceSDL(const SIrrlichtCreationParameters& param)
Window((SDL_Window*)param.WindowId), SDL_Flags(0),
MouseX(0), MouseY(0), MouseXRel(0), MouseYRel(0), MouseButtonStates(0),
Width(param.WindowSize.Width), Height(param.WindowSize.Height),
Resizable(param.WindowResizable == 1 ? true : false)
Resizable(param.WindowResizable == 1 ? true : false), CurrentTouchCount(0)
{
#ifdef _DEBUG
setDebugName("CIrrDeviceSDL");
@ -254,6 +254,11 @@ CIrrDeviceSDL::CIrrDeviceSDL(const SIrrlichtCreationParameters& param)
}
}
// Minetest has its own code to synthesize mouse events from touch events,
// so we prevent SDL from doing it.
SDL_SetHint(SDL_HINT_TOUCH_MOUSE_EVENTS, "0");
SDL_SetHint(SDL_HINT_MOUSE_TOUCH_EVENTS, "0");
// create keymap
createKeyMap();
@ -745,6 +750,45 @@ bool CIrrDeviceSDL::run()
postEventFromUser(irrevent);
break;
case SDL_FINGERDOWN:
irrevent.EventType = EET_TOUCH_INPUT_EVENT;
irrevent.TouchInput.Event = ETIE_PRESSED_DOWN;
irrevent.TouchInput.ID = SDL_event.tfinger.fingerId;
irrevent.TouchInput.X = SDL_event.tfinger.x * Width;
irrevent.TouchInput.Y = SDL_event.tfinger.y * Height;
CurrentTouchCount++;
irrevent.TouchInput.touchedCount = CurrentTouchCount;
postEventFromUser(irrevent);
break;
case SDL_FINGERMOTION:
irrevent.EventType = EET_TOUCH_INPUT_EVENT;
irrevent.TouchInput.Event = ETIE_MOVED;
irrevent.TouchInput.ID = SDL_event.tfinger.fingerId;
irrevent.TouchInput.X = SDL_event.tfinger.x * Width;
irrevent.TouchInput.Y = SDL_event.tfinger.y * Height;
irrevent.TouchInput.touchedCount = CurrentTouchCount;
postEventFromUser(irrevent);
break;
case SDL_FINGERUP:
irrevent.EventType = EET_TOUCH_INPUT_EVENT;
irrevent.TouchInput.Event = ETIE_LEFT_UP;
irrevent.TouchInput.ID = SDL_event.tfinger.fingerId;
irrevent.TouchInput.X = SDL_event.tfinger.x * Width;
irrevent.TouchInput.Y = SDL_event.tfinger.y * Height;
// To match Android behavior, still count the pointer that was
// just released.
irrevent.TouchInput.touchedCount = CurrentTouchCount;
if (CurrentTouchCount > 0) {
CurrentTouchCount--;
}
postEventFromUser(irrevent);
break;
default:
break;
} // end switch

2
source/Irrlicht/CIrrDeviceSDL.h
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@ -318,6 +318,8 @@ namespace irr
core::array<SKeyMap> KeyMap;
SDL_SysWMinfo Info;
s32 CurrentTouchCount;
};
} // end namespace irr