From fe3f15ad33db691fd3a721f625dfe09534398d5b Mon Sep 17 00:00:00 2001
From: fgsfds <derp.primus@gmail.com>
Date: Mon, 6 Mar 2023 22:38:12 +0100
Subject: [PATCH] engine: input: psvita: reimplement OSK manually

---
 engine/platform/platform.h         |   1 +
 engine/platform/psvita/in_psvita.c | 115 +++++++++++++++++++++++++++++
 engine/platform/sdl/events.c       |   4 +
 engine/platform/sdl/in_sdl.c       |   4 +
 4 files changed, 124 insertions(+)
 create mode 100644 engine/platform/psvita/in_psvita.c

diff --git a/engine/platform/platform.h b/engine/platform/platform.h
index cd51a95a..76805fa4 100644
--- a/engine/platform/platform.h
+++ b/engine/platform/platform.h
@@ -60,6 +60,7 @@ void NSwitch_Shutdown( void );
 void PSVita_Init( void );
 void PSVita_Shutdown( void );
 qboolean PSVita_GetBasePath( char *buf, const size_t buflen );
+void PSVita_InputUpdate( void );
 #endif
 
 /*
diff --git a/engine/platform/psvita/in_psvita.c b/engine/platform/psvita/in_psvita.c
new file mode 100644
index 00000000..3d14ade2
--- /dev/null
+++ b/engine/platform/psvita/in_psvita.c
@@ -0,0 +1,115 @@
+/*
+in_psvita.h - psvita-specific input code
+Copyright (C) 2021-2023 fgsfds
+
+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 3 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.
+*/
+
+/* 
+the SDL fork that we use sometimes fails to call sceImeUpdate,
+which leads to input being consumed forever without ever showing the keyboard,
+so we just reimplement the whole thing here using SceCommonDialog
+*/
+
+#include "platform/platform.h"
+#include <vitasdk.h>
+#include <SDL.h>
+
+extern int SDL_SendKeyboardText( const char *text );
+
+static qboolean ime_enabled;
+static SceWChar16 ime_string[SCE_IME_MAX_TEXT_LENGTH + 1];
+
+/* this is dumb but will probably work fine enough */
+static inline void utf2ascii( char *dst, const SceWChar16 *src, unsigned dstsize )
+{
+	if ( !src || !dst || !dstsize )
+		return;
+	while ( *src && ( dstsize-- > 0 ) )
+		*(dst++) = (*(src++)) & 0xFF;
+	*dst = 0x00;
+}
+
+static void IME_Open( void )
+{
+	SceInt32 res;
+	SceImeDialogParam param;
+
+	memset( ime_string, 0, sizeof( ime_string ) );
+
+	sceImeDialogParamInit( &param );
+	param.supportedLanguages = SCE_IME_LANGUAGE_ENGLISH;
+	param.languagesForced = SCE_TRUE;
+	param.type = SCE_IME_TYPE_BASIC_LATIN;
+	param.title = u"Input text";
+	param.maxTextLength = SCE_IME_MAX_TEXT_LENGTH;
+	param.initialText = (SceWChar16 *)u"";
+	param.inputTextBuffer = ime_string;
+
+	res = sceImeDialogInit( &param );
+	if ( res < 0 )
+	{
+		Con_Reportf( S_WARN "Could not open IME keyboard: %d\n", res );
+	}
+	else
+	{
+		ime_enabled = true;
+	}
+}
+
+static void IME_Close( void )
+{
+	if ( ime_enabled )
+	{
+		ime_enabled = false;
+		sceImeDialogTerm( );
+	}
+}
+
+static void IME_Update( void )
+{
+	char ascii_string[SCE_IME_MAX_TEXT_LENGTH + 2] = { 0 };
+	SceImeDialogResult result;
+	SceCommonDialogStatus status = sceImeDialogGetStatus( );
+	if( status == 2 )
+	{
+		memset( &result, 0, sizeof( SceImeDialogResult ) );
+		sceImeDialogGetResult( &result );
+		if( result.button == SCE_IME_DIALOG_BUTTON_ENTER )
+		{
+			utf2ascii( ascii_string, ime_string, SCE_IME_MAX_TEXT_LENGTH );
+			SDL_SendKeyboardText( ascii_string );
+		}
+		IME_Close();
+	}
+}
+
+void Platform_EnableTextInput( qboolean enable )
+{
+	if ( enable )
+	{
+		if ( ime_enabled )
+			IME_Close();
+		IME_Open();
+		SDL_EventState( SDL_TEXTINPUT, SDL_ENABLE );
+	}
+	else
+	{
+		SDL_EventState( SDL_TEXTINPUT, SDL_DISABLE );
+		IME_Close();
+	}
+}
+
+void PSVita_InputUpdate( void )
+{
+	if ( ime_enabled )
+		IME_Update();
+}
diff --git a/engine/platform/sdl/events.c b/engine/platform/sdl/events.c
index bd45bb9d..a71added 100644
--- a/engine/platform/sdl/events.c
+++ b/engine/platform/sdl/events.c
@@ -671,6 +671,10 @@ void Platform_RunEvents( void )
 
 	while( !host.crashed && !host.shutdown_issued && SDL_PollEvent( &event ) )
 		SDLash_EventFilter( &event );
+
+#if XASH_PSVITA
+	PSVita_InputUpdate();
+#endif
 }
 
 void* Platform_GetNativeObject( const char *name )
diff --git a/engine/platform/sdl/in_sdl.c b/engine/platform/sdl/in_sdl.c
index 0603a421..22c32af0 100644
--- a/engine/platform/sdl/in_sdl.c
+++ b/engine/platform/sdl/in_sdl.c
@@ -126,6 +126,8 @@ void Platform_Vibrate( float time, char flags )
 		SDL_JoystickRumble( g_joy, 0xFFFF, 0xFFFF, time * 1000.0f );
 }
 
+#if !XASH_PSVITA
+
 /*
 =============
 SDLash_EnableTextInput
@@ -139,6 +141,8 @@ void Platform_EnableTextInput( qboolean enable )
 #endif // SDL_VERSION_ATLEAST( 2, 0, 0 )
 }
 
+#endif // !XASH_PSVITA
+
 /*
 =============
 SDLash_JoyInit_Old