From 408100744f2878d19930a35ca7b783f5bbf86b32 Mon Sep 17 00:00:00 2001
From: Vadim Grigoruk <vadim@beam-mw.com>
Date: Fri, 24 Aug 2018 21:49:48 +0300
Subject: [PATCH] #701

---
 src/system.c | 113 ++++++++++++++++++++++++++++++++++++++++++---------
 1 file changed, 93 insertions(+), 20 deletions(-)

diff --git a/src/system.c b/src/system.c
index 5c8d009..961ddc6 100644
--- a/src/system.c
+++ b/src/system.c
@@ -61,6 +61,8 @@ static struct
 			GPU_Image* down;
 		} texture;
 
+		u8 text;
+
 	} keyboard;
 
 	u32 touchCounter;
@@ -390,40 +392,100 @@ static void processMouse()
 	}
 }
 
+static void appendKeycode(tic_keycode code)
+{
+	tic80_input* input = &platform.studio->tic->ram.input;
+
+	enum{BufSize = COUNT_OF(input->keyboard.keys)};
+
+	for(s32 i = 0; i < BufSize; i++)
+	{
+		if(input->keyboard.keys[i] == tic_key_unknown)
+		{
+			input->keyboard.keys[i] = code;
+			return;
+		}
+		else if(input->keyboard.keys[i] == code) return;
+	}
+}
+
 static void processKeyboard()
 {
-	static const u32 KeyboardCodes[tic_keys_count] = 
+	tic80_input* input = &platform.studio->tic->ram.input;
+	input->keyboard.data = 0;
+
+	SDL_Keymod mod = SDL_GetModState();
+
+	if(mod & KMOD_RALT)
+	{
+		static const struct {tic_keycode code; tic_keycode shift;} TextCodes[] =
+		{
+			['-'] = {tic_key_minus, tic_key_unknown},
+			['='] = {tic_key_equals, tic_key_unknown},
+			['['] = {tic_key_leftbracket, tic_key_unknown},
+			[']'] = {tic_key_rightbracket, tic_key_unknown},
+			['\\'] = {tic_key_backslash, tic_key_unknown},
+			[';'] = {tic_key_semicolon, tic_key_unknown},
+			['\''] = {tic_key_apostrophe, tic_key_unknown},
+			['`'] = {tic_key_grave, tic_key_unknown},
+			[','] = {tic_key_comma, tic_key_unknown},
+			['.'] = {tic_key_period, tic_key_unknown},
+			['/'] = {tic_key_slash, tic_key_unknown},
+			[')'] = {tic_key_0, tic_key_shift},
+			['!'] = {tic_key_1, tic_key_shift},
+			['@'] = {tic_key_2, tic_key_shift},
+			['#'] = {tic_key_3, tic_key_shift},
+			['$'] = {tic_key_4, tic_key_shift},
+			['%'] = {tic_key_5, tic_key_shift},
+			['^'] = {tic_key_6, tic_key_shift},
+			['&'] = {tic_key_7, tic_key_shift},
+			['*'] = {tic_key_8, tic_key_shift},
+			['('] = {tic_key_9, tic_key_shift},
+			['_'] = {tic_key_minus, tic_key_shift},
+			['+'] = {tic_key_equals, tic_key_shift},
+			['{'] = {tic_key_leftbracket, tic_key_shift},
+			['}'] = {tic_key_rightbracket, tic_key_shift},
+			['|'] = {tic_key_backslash, tic_key_shift},
+			[':'] = {tic_key_semicolon, tic_key_shift},
+			['"'] = {tic_key_apostrophe, tic_key_shift},
+			['~'] = {tic_key_grave, tic_key_shift},
+			['<'] = {tic_key_comma, tic_key_shift},
+			['>'] = {tic_key_period, tic_key_shift},
+			['?'] = {tic_key_slash, tic_key_shift},
+		};
+
+		if(platform.keyboard.text && platform.keyboard.text < COUNT_OF(TextCodes))
+		{
+			appendKeycode(TextCodes[platform.keyboard.text].code);
+			appendKeycode(TextCodes[platform.keyboard.text].shift);
+			platform.keyboard.text = 0;
+		}
+
+		return;
+	}
+
+	const u8* keyboard = SDL_GetKeyboardState(NULL);
+
+	if(mod & KMOD_SHIFT) appendKeycode(tic_key_shift);
+	if(mod & (KMOD_CTRL | KMOD_GUI)) appendKeycode(tic_key_ctrl);
+	if(mod & KMOD_CAPS) appendKeycode(tic_key_capslock);
+
+	static const SDL_Keycode KeyboardCodes[tic_keys_count] = 
 	{
 		#include "keycodes.inl"
 	};
 
-	tic80_input* input = &platform.studio->tic->ram.input;
-	input->keyboard.data = 0;
-
-	const u8* keyboard = SDL_GetKeyboardState(NULL);
-
-	enum{BufSize = COUNT_OF(input->keyboard.keys)};
-
-	s32 c = 0;
-	{
-		SDL_Keymod mod = SDL_GetModState();
-		if(mod & KMOD_RSHIFT) input->keyboard.keys[c++] = tic_key_shift;
-		if(mod & (KMOD_RCTRL | KMOD_GUI)) input->keyboard.keys[c++] = tic_key_ctrl;
-		if(mod & KMOD_RALT) input->keyboard.keys[c++] = tic_key_alt;
-		if(mod & KMOD_CAPS) input->keyboard.keys[c++] = tic_key_capslock;
-	}
-
-	for(s32 i = 0; i < SDL_NUM_SCANCODES && c < BufSize; i++)
+	for(s32 i = 0; i < SDL_NUM_SCANCODES; i++)
 	{
 		if(keyboard[i])
 		{
-			u32 keycode = SDL_GetKeyFromScancode(i);
+			SDL_Keycode keycode = SDL_GetKeyFromScancode(i);
 
 			for(s32 k = 0; k < COUNT_OF(KeyboardCodes); k++)
 			{
 				if(KeyboardCodes[k] == keycode)
 				{
-					input->keyboard.keys[c++] = k;
+					appendKeycode(k);
 					break;
 				}
 			}
@@ -794,6 +856,17 @@ static void pollEvent()
 			case SDL_WINDOWEVENT_FOCUS_GAINED: platform.studio->updateProject(); break;
 			}
 			break;
+		case SDL_TEXTINPUT:
+			{
+				const char* symbol = event.text.text;
+				if(strlen(symbol) == 1)
+					platform.keyboard.text = *symbol;
+			}
+			break;
+		case SDL_KEYDOWN:
+			if(event.key.keysym.sym == SDLK_RALT)
+				platform.keyboard.text = 0;
+			break;
 		case SDL_QUIT:
 			platform.studio->exit();
 			break;