fix bug where line appears on header

1 files changed, 15 insertions, 7 deletions

diff --git a/src/ui.rs b/src/ui.rs
index 730c136..a0894e4 100644
--- a/src/ui.rs
+++ b/src/ui.rs
@@ -19,7 +19,7 @@ impl UI {
             input_x: 0,
             input_y: 0,
             output_x: 0,
-            output_y: 0,
+            output_y: 1,
             chan: String::new(),
             nick: String::new(),
             buffer: String::new(),
@@ -69,17 +69,17 @@ impl UI {
         let mut max_y = 0;
         getmaxyx(stdscr(), &mut max_y, &mut max_x);
 
+        if self.output_y >= max_y-1 {
+            self.scroll(1);
+        }
         let mut chars = text.chars();
         while let Some(ch) = chars.next() {
             if self.output_x >= max_x {
                 self.output_x = 0;
                 self.output_y += 1;
-            }
-            if self.output_y >= max_y-1 {
-                mv(1, 0);
-                deleteln();
-                self.output_y-=1;
-                mv(self.output_y, 0);
+                if self.output_y >= max_y-1 {
+                    self.scroll(1);
+                }
             }
             mv(self.output_y, self.output_x);
             printw(&ch.to_string());
@@ -179,4 +179,12 @@ impl UI {
         self.put_str("\n");
     }
 
+    fn scroll(&mut self, len: i32) {
+        mv(1, 0);
+        for i in 0..len {
+            deleteln();
+        }
+        self.output_y-=len;
+        mv(self.output_y, 0);
+    }
 }