From 6ebe3b32116a128e8196bae1fe85219442b98c23 Mon Sep 17 00:00:00 2001
From: WormHeamer
Date: Tue, 4 Nov 2025 16:21:28 -0500
Subject: various changes

---
 main.c | 31 +++++++++++++++++++++++++------
 1 file changed, 25 insertions(+), 6 deletions(-)

diff --git a/main.c b/main.c
index d3ceecd..0aeb63d 100644
--- a/main.c
+++ b/main.c
@@ -101,15 +101,19 @@ void vui_getwinsz(unsigned *w, unsigned *h) {
 	*h = wsz.ws_row;
 }
 
-static void vui_clrtoeol(VuiBuffer *buf, unsigned x0, unsigned y) {
-	for (unsigned x = x0; x < buf->width; x++) {
+static void vui_clrspan(VuiBuffer *buf, unsigned x0, unsigned x1, unsigned y) {
+	for (unsigned x = x0; x < x1; x++) {
 		BCHR(buf, x, y) = ' ';
 	}
-	for (unsigned x = x0; x < buf->width; x++) {
+	for (unsigned x = x0; x < x1; x++) {
 		BATTR(buf, x, y) = ATTR_DEFAULT;
 	}
 }
 
+static void vui_clrtoeol(VuiBuffer *buf, unsigned x0, unsigned y) {
+	vui_clrspan(buf, x0, buf->width, y);
+}
+
 static void clear_buf(VuiBuffer *buf) {
 	for (unsigned y = 0; y < buf->height; y++) {
 		vui_clrtoeol(buf, 0, y);
@@ -274,8 +278,7 @@ static void attr_chg(VuiAttr *ptr, VuiAttr to) {
 
 	if (chg_fg || chg_bg || chg_attr) {
 		*s++ = 'm';
-		*s = '\0';
-		fputs(buf, stdout);
+		fwrite(buf, 1, s - buf, stdout);
 	}
 
 	*ptr = to;
@@ -320,7 +323,8 @@ void vui_blit(void) {
 				vui_changes++;
 				curs_move(cur_x, cur_y, x0, y);
 				attr_chg(&attr_last, a);
-				printf("%.*s", x - x0, &CHR(x0, y));
+				fwrite(&CHR(x0, y), 1, x - x0, stdout);
+				//printf("%.*s", x - x0, );
 				cur_x = x;
 				cur_y = y;
 				vui_repainted += x - x0;
@@ -405,9 +409,11 @@ void vui_scroll_buf(VuiBuffer *b, int dx, int dy) {
 	if (dy > 0) {
 		memmove(b->chr  + (b->width * dy), b->chr,  sizeof(*b->chr)  * b->width * (b->height - dy));
 		memmove(b->attr + (b->width * dy), b->attr, sizeof(*b->attr) * b->width * (b->height - dy));
+		for (int y = 0; y < dy; y++) vui_clrtoeol(b, 0, y);
 	} else if (dy < 0) {
 		memmove(b->chr,  b->chr  + (b->width * -dy), sizeof(*b->chr)  * b->width * (b->height + dy));
 		memmove(b->attr, b->attr + (b->width * -dy), sizeof(*b->attr) * b->width * (b->height + dy));
+		for (int y = b->height - 1; y > b->height + dy - 1; y--) vui_clrtoeol(b, 0, y);
 	}
 	if (dx > 0) {
 		for (unsigned i = 0; i < b->height; i++) {
@@ -416,6 +422,9 @@ void vui_scroll_buf(VuiBuffer *b, int dx, int dy) {
 		for (unsigned i = 0; i < b->height; i++) {
 			memmove(b->attr + (i * b->width) + dx, b->attr + (i * b->width), sizeof(*b->attr) * (b->width - dx));
 		}
+		for (unsigned i = 0; i < b->height; i++) {
+			vui_clrspan(b, 0, dx, i);
+		}
 	} else if (dx < 0) {
 		for (unsigned i = 0; i < b->height; i++) {
 			memmove(b->chr + (i * b->width), b->chr + (i * b->width) - dx, sizeof(*b->chr) * (b->width + dx));
@@ -423,6 +432,10 @@ void vui_scroll_buf(VuiBuffer *b, int dx, int dy) {
 		for (unsigned i = 0; i < b->height; i++) {
 			memmove(b->attr + (i * b->width), b->attr + (i * b->width) - dx, sizeof(*b->attr) * (b->width + dx));
 		}
+		for (unsigned i = 0; i < b->height; i++) {
+			vui_clrspan(b, b->width + dx - 1, b->width, i);
+		}
+
 	}
 }
 
@@ -539,10 +552,16 @@ int main(int argc, const char **argv) {
 		if (c == 'q') break;
 		if (c > 0x20 && c < 0x7f) C = c;
 		switch (c) {
+			/*
 		case 'j': dx=-1; dy=0; break;
 		case 'i': dx=0; dy=-1; break;
 		case 'k': dx=0; dy=1; break;
 		case 'l': dx=1; dy=0; break;
+		*/
+		case 'j': dx--; break;
+		case 'l': dx++; break;
+		case 'i': dy--; break;
+		case 'k': dy++; break;
 		case ' ': paused = !paused; break;
 		}
 	}
-- 
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