From 7daa4fd0784fd7c0420d46eede052b8f75455f21 Mon Sep 17 00:00:00 2001
From: Jarkko Toivanen <jt@jakest.us>
Date: Fri, 17 Jan 2025 04:53:27 +0200
Subject: [PATCH] We has arrowy handly

---
 main.c | 94 ++++++++++++++++++++++++++++++++++++++++++++++++++++++----
 1 file changed, 89 insertions(+), 5 deletions(-)

diff --git a/main.c b/main.c
index 8b80427..72e5ede 100644
--- a/main.c
+++ b/main.c
@@ -1,17 +1,60 @@
 #include<stdio.h>
+#include<stdlib.h>
+#include<unistd.h>
+#include<termios.h>
 
 #define clear() printf("\033[H\033[J")
 #define gotoxy(x,y) printf("\033[%d;%dH", (y), (x))
 
-void drawWin(int fontH);
+int getch();
+void enableRawMode();
+void disableRawMode();
+void drawWin(int fonth);
+int askHeight();
+
+struct termios orig_termios;
 
 int main() {
+	int fonth = askHeight();
 	clear();
-	drawWin(12);
+	drawWin(fonth);
+	
+	enableRawMode();
+	
+	char c;
+	while(1) {
+		c = getch();
+		// Q to exit
+		if (c == 'q') {
+			break;
+		}
+		// Handle arrows and stuff
+		if (c == '[') {
+			c = getch();
+			if (c == 'A') {
+				printf("^");
+				continue;
+			}
+			if (c == 'B') {
+				printf("v");
+				continue;
+			}
+			if (c == 'C') {
+				printf(">");
+				continue;
+			}
+			if (c == 'D') {
+				printf("<");
+				continue;
+			}
+		}
+	}
+	
+	disableRawMode();
 	return 0;
 }
 
-void drawWin(int fontH) {
+void drawWin(int fonth) {
 	clear();
 	printf("Kaari - Binarier font editor\r\n");
 	printf("+--------+\r\n");
@@ -19,7 +62,7 @@ void drawWin(int fontH) {
 	int cstart=32;
 	int cperline=16;
 	int cmax=126;
-	for (int y=0; y<fontH; y++) {
+	for (int y=0; y<fonth; y++) {
 		printf("|        | ");
 		for (int c=y*cperline+cstart; c<(y+1)*cperline+cstart && c<=cmax; c++) {
 			printf("%c ", c);
@@ -27,7 +70,48 @@ void drawWin(int fontH) {
 		printf("\r\n");
 	}
 	
-	printf("+--------+\r\n");
+	printf("+--------+\r\nQ:Quit");
 	
 	return;
 }
+
+int askHeight() {
+	printf("Enter desired font height: ");
+	int fonth;
+	scanf("%d", &fonth);
+	if (fonth < 8 || fonth > 16) {
+		printf("This should be 8 - 16.\r\n");
+		return askHeight();
+	}
+	return fonth;
+}
+
+void disableRawMode() {
+	tcsetattr(STDIN_FILENO, TCSAFLUSH, &orig_termios);
+}
+
+void enableRawMode() {
+	tcgetattr(STDIN_FILENO, &orig_termios);
+	atexit(disableRawMode);
+
+	struct termios raw = orig_termios;
+	raw.c_lflag &= ~(ECHO | ICANON);
+	
+	tcsetattr(STDIN_FILENO, TCSAFLUSH, &raw);
+}
+
+int getch() {
+	struct termios oldt, newt;
+	int ch;
+	
+	tcgetattr(STDIN_FILENO, &oldt);
+	newt = oldt;
+	newt.c_lflag &= ~(ICANON | ECHO);
+	tcsetattr(STDIN_FILENO, TCSANOW, &newt);
+	
+	ch = getchar();
+	
+	tcsetattr(STDIN_FILENO, TCSANOW, &oldt);
+	
+	return ch;
+}