I’ve incorrect usage of SDL where TextInputManager.startTextInput calls SDL_StartTextInput with a window handle using outdated window->text_input_rect and only afterwards is it corrected by a call to TextInputManager.setTextInputArea.
This is a race condition wherein someone calling SDL_GetTextInputArea can get the incorrect value set by SDL_StartTextInput before Minecraft calls SDL_SetTextInputArea to correct it. So SDL_StartTextInput should still be called with the proper value set beforehand.
Additionally, SDL_SetTextInputArea is needlessly spam called while a text box is open, even if its location isn’t changing
Additionally additionally, if touch keyboards are not to be supported, the SDL hint SDL_HINT_ENABLE_SCREEN_KEYBOARD should be set to 0 as this incorrect usage leads to very odd behavior in linux, and windows not having the keyboard appear at all.
Comments 2
Reproduction steps on Linux:
1) Use KDE Plasma (Wayland)
2) Enable the on-screen virtual keyboard plasma-keyboard
3) Tap the chat box, that is that black area in which chat text is displayed
Reproduction steps on Windows 11:
1) Set on-screen keyboard to always appear
2) Tap the chat box
Observed results:
Linux: On-screen keyboard is triggered and appears, obscuring half the screen without any proper resizing/rescaling being done to adapt to it
Windows: On-screen keyboard does not appear
Expected results:
Linux to match Windows 11 results, that is, no on-screen keyboard appears
Additional Information:
I added specifically the cause as to how the implementation of the on-screen keyboard is broken and may possibly cause issues down the line. I noted down two things that should be fixed with the SDL implementation of text input and how.
1) SDL_HINT_ENABLE_SCREEN_KEYBOARD hint is not set before SDL subsystem init
2) Arguments used for calls to SDL_StartTextInput is outdated
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