From 2887831d771288191f7a1c9baf37bb1311b258f3 Mon Sep 17 00:00:00 2001
From: Anders Jenbo <anders@jenbo.dk>
Date: Thu, 23 Sep 2021 06:25:01 +0200
Subject: [PATCH] SDL1 Unicode input support

---
 Source/DiabloUI/diabloui.cpp | 18 ++++++++++--------
 Source/control.cpp           | 19 +------------------
 Source/control.h             |  2 +-
 Source/diablo.cpp            |  2 +-
 Source/miniwin/misc_msg.cpp  | 15 ++++++++++++++-
 5 files changed, 27 insertions(+), 29 deletions(-)

diff --git a/Source/DiabloUI/diabloui.cpp b/Source/DiabloUI/diabloui.cpp
index d4bfef00828d..31fc886cd338 100644
--- a/Source/DiabloUI/diabloui.cpp
+++ b/Source/DiabloUI/diabloui.cpp
@@ -2,6 +2,11 @@
 
 #include <algorithm>
 #include <string>
+#ifdef USE_SDL1
+#include <codecvt>
+#include <locale>
+#include <cassert>
+#endif
 
 #include "DiabloUI/art_draw.h"
 #include "DiabloUI/button.h"
@@ -223,13 +228,13 @@ void UiFocusPageDown()
 	}
 }
 
-void SelheroCatToName(char *inBuf, char *outBuf, int cnt)
+void SelheroCatToName(const char *inBuf, char *outBuf, int cnt)
 {
 	strncat(outBuf, inBuf, cnt - strlen(outBuf));
 }
 
 #ifdef __vita__
-void selhero_SetName(char *in_buf, char *out_buf, int cnt)
+void selhero_SetName(const char *in_buf, char *out_buf, int cnt)
 {
 	strncpy(out_buf, in_buf, cnt);
 }
@@ -337,12 +342,9 @@ void UiFocusNavigation(SDL_Event *event)
 #ifdef USE_SDL1
 			if ((event->key.keysym.mod & KMOD_CTRL) == 0) {
 				Uint16 unicode = event->key.keysym.unicode;
-				if (unicode && (unicode & 0xFF80) == 0) {
-					char utf8[SDL_TEXTINPUTEVENT_TEXT_SIZE];
-					utf8[0] = (char)unicode;
-					utf8[1] = '\0';
-					SelheroCatToName(utf8, UiTextInput, UiTextInputLen);
-				}
+				std::wstring_convert<std::codecvt_utf8<char32_t>, char32_t> convert;
+				std::string utf8 = convert.to_bytes(unicode);
+				SelheroCatToName(utf8.c_str(), UiTextInput, UiTextInputLen);
 			}
 #endif
 			break;
diff --git a/Source/control.cpp b/Source/control.cpp
index 544f747ad243..445aebfc1cd9 100644
--- a/Source/control.cpp
+++ b/Source/control.cpp
@@ -1794,7 +1794,7 @@ void control_reset_talk()
 	force_redraw = 255;
 }
 
-bool control_talk_last_key(char vkey)
+bool IsTalkActive()
 {
 	if (!IsChatAvailable())
 		return false;
@@ -1802,28 +1802,11 @@ bool control_talk_last_key(char vkey)
 	if (!talkflag)
 		return false;
 
-#ifdef USE_SDL1
-	if (vkey >= 0 && vkey < DVL_VK_SPACE)
-		return false;
-
-	std::size_t result = strlen(TalkMessage);
-	if (result < 78) {
-		TalkMessage[result] = vkey;
-		TalkMessage[result + 1] = '\0';
-	}
-#endif
-
 	return true;
 }
 
 void control_new_text(string_view text)
 {
-	if (!IsChatAvailable())
-		return;
-
-	if (!talkflag)
-		return;
-
 	strncat(TalkMessage, text.data(), sizeof(TalkMessage) - strlen(TalkMessage) - 1);
 }
 
diff --git a/Source/control.h b/Source/control.h
index acc434bde4d3..2d62a7bfdd8c 100644
--- a/Source/control.h
+++ b/Source/control.h
@@ -176,7 +176,7 @@ bool control_check_talk_btn();
 void control_release_talk_btn();
 void control_type_message();
 void control_reset_talk();
-bool control_talk_last_key(char vkey);
+bool IsTalkActive();
 void control_new_text(string_view text);
 bool control_presskeys(int vkey);
 void DiabloHotkeyMsg(uint32_t dwMsg);
diff --git a/Source/diablo.cpp b/Source/diablo.cpp
index 8d81ca6744f7..ed8e93127fdb 100644
--- a/Source/diablo.cpp
+++ b/Source/diablo.cpp
@@ -537,7 +537,7 @@ void PressKey(int vkey)
  */
 void PressChar(char vkey)
 {
-	if (gmenu_is_active() || control_talk_last_key(vkey) || sgnTimeoutCurs != CURSOR_NONE || MyPlayerIsDead) {
+	if (gmenu_is_active() || IsTalkActive() || sgnTimeoutCurs != CURSOR_NONE || MyPlayerIsDead) {
 		return;
 	}
 	if (vkey == 'p' || vkey == 'P') {
diff --git a/Source/miniwin/misc_msg.cpp b/Source/miniwin/misc_msg.cpp
index 0ce5bf4a5e54..30d0925ea5c3 100644
--- a/Source/miniwin/misc_msg.cpp
+++ b/Source/miniwin/misc_msg.cpp
@@ -2,6 +2,11 @@
 #include <cstdint>
 #include <deque>
 #include <string>
+#ifdef USE_SDL1
+#include <codecvt>
+#include <locale>
+#include <cassert>
+#endif
 
 #include "control.h"
 #include "controls/controller.h"
@@ -474,6 +479,14 @@ bool FetchMessage_Real(tagMSG *lpMsg)
 		break;
 	case SDL_KEYDOWN:
 	case SDL_KEYUP: {
+#ifdef USE_SDL1
+		if (gbRunGame && IsTalkActive()) {
+			Uint16 unicode = e.key.keysym.unicode;
+			std::wstring_convert<std::codecvt_utf8<char32_t>, char32_t> convert;
+			std::string utf8 = convert.to_bytes(unicode);
+			control_new_text(utf8);
+		}
+#endif
 		int key = TranslateSdlKey(e.key.keysym);
 		if (key == -1)
 			return FalseAvail(e.type == SDL_KEYDOWN ? "SDL_KEYDOWN" : "SDL_KEYUP", e.key.keysym.sym);
@@ -537,7 +550,7 @@ bool FetchMessage_Real(tagMSG *lpMsg)
 			break;
 		return FalseAvail("SDL_TEXTEDITING", e.edit.length);
 	case SDL_TEXTINPUT:
-		if (gbRunGame) {
+		if (gbRunGame && IsTalkActive()) {
 			control_new_text(e.text.text);
 			break;
 		}