screen: clear padding of main-lines on resize

The invisible padding during width reduction is not cleared as we clear it when it gets visible again. However, if the line is pushed into scrollback in between, it may get visible once the width is increases again. Hence, clear padding of main-lines if screen-width is decreased. Signed-off-by: David Herrmann <[email protected]>
giucam · Oct 22, 2013 · 4e71294 · 4e71294
1 parent 68e64ec
commit 4e71294
Showing 1 changed file with 4 additions and 2 deletions.
diff --git a/src/tsm_screen.c b/src/tsm_screen.c
@@ -635,19 +635,21 @@ int tsm_screen_resize(struct tsm_screen *con, unsigned int x,
 		}
 	}
 
-	/* clear expansion area */
+	/* clear expansion/padding area */
 	for (j = 0; j < con->line_num; ++j) {
 		i = 0;
 		if (j < con->size_y)
 			i = con->size_x;
 
-		for ( ; i < x; ++i)
+		/* main-lines may go into SB, so clear all cells */
+		for ( ; i < con->main_lines[j]->size; ++i)
 			cell_init(con, &con->main_lines[j]->cells[i]);
 
 		i = 0;
 		if (j < con->size_y)
 			i = con->size_x;
 
+		/* alt-lines never go into SB, only clear visible cells */
 		for ( ; i < x; ++i)
 			cell_init(con, &con->alt_lines[j]->cells[i]);
 	}