From c6a470aeef767e5f357aee7cf1d9d7ad5a19caf3 Mon Sep 17 00:00:00 2001
From: Jarkko Toivanen <jt@jakest.us>
Date: Fri, 17 Jan 2025 06:09:31 +0200
Subject: [PATCH] Character switching

---
 main.c | 42 +++++++++++++++++++++++++++++++++++++++++-
 1 file changed, 41 insertions(+), 1 deletion(-)

diff --git a/main.c b/main.c
index 72e5ede..2a872bb 100644
--- a/main.c
+++ b/main.c
@@ -11,6 +11,10 @@ void enableRawMode();
 void disableRawMode();
 void drawWin(int fonth);
 int askHeight();
+void limitCurrChar();
+
+char currchar = 'A';
+char xpos=0, ypos=0;
 
 struct termios orig_termios;
 
@@ -22,6 +26,7 @@ int main() {
 	enableRawMode();
 	
 	char c;
+	limitCurrChar();
 	while(1) {
 		c = getch();
 		// Q to exit
@@ -31,6 +36,17 @@ int main() {
 		// Handle arrows and stuff
 		if (c == '[') {
 			c = getch();
+			if (c == '5') { // PageUP
+				currchar++;
+				limitCurrChar();
+				continue;
+			}
+			if (c == '6') { // PageDOWN
+				currchar--;
+				limitCurrChar();
+				continue;
+			}
+			
 			if (c == 'A') {
 				printf("^");
 				continue;
@@ -70,7 +86,7 @@ void drawWin(int fonth) {
 		printf("\r\n");
 	}
 	
-	printf("+--------+\r\nQ:Quit");
+	printf("+--------+\r\nQ:Quit PgUP/DWN:Switch char\r\n");
 	
 	return;
 }
@@ -115,3 +131,27 @@ int getch() {
 	
 	return ch;
 }
+
+void limitCurrChar() {
+	if (currchar < 32) {
+		currchar = 32;
+	} else if (currchar > 126) {
+		currchar = 126;
+	}
+	
+	gotoxy(12+currchar%16*2, 3+(currchar-32)/16);
+	printf("\033[7m%c", currchar);
+
+	gotoxy(12+(currchar-1)%16*2, 3+(currchar-1-32)/16);
+	printf("\033[0m%c", currchar-1);
+
+	gotoxy(12+(currchar+1)%16*2, 3+(currchar+1-32)/16);
+	printf("\033[0m%c", currchar+1);
+
+	gotoxy(12, 2);
+	printf("\033[0mEditing \"%c\" / %d / 0x%X", currchar, currchar, currchar);
+
+	gotoxy(0, 21);
+	
+	return;
+}