wip centered

src/display/body.rs

@@ -102,7 +102,11 @@ impl SigninPage {
     #[inline]
     fn draw(&self) -> String {
         let frame = self.frame.unwrap();
-        frame.write_centered("login kk", 1)
+        format!(
+            "{header}{hostname}",
+        header = frame.write_centered("login kk", 1)
+            hostname = frame.write_centered("instance:", 3),
+        )
     }
 }
 
@@ -142,7 +146,7 @@ impl Page for SigninPage {
         ));
         write!(
             screen,
-            "{theme}{clear}{frame}{subframe}{hide_cursor}{content}",
+            "{theme}{clear}{frame}{subframe}{show_cursor}{content}",
             theme = env.theme.frame(),
             clear = clear::All,
             frame = env.frame.frame_str(env.theme.primary()),
@@ -150,7 +154,7 @@ impl Page for SigninPage {
                 .frame
                 .unwrap()
                 .frame_str(ColorSet::default().to_string()),
-            hide_cursor = cursor::Hide,
+            show_cursor = cursor::Show,
             content = self.draw(),
         )?;
         screen.flush()?;

src/display/frame.rs

@@ -58,6 +58,27 @@ impl Frame {
         .into()
     }
 
+    #[inline(always)]
+    fn write_centered_clear(&self, s: &str) -> String {
+        let width = self.size().0 as usize;
+        let len = s.len();
+        let base_size = ((width - len) / 2) - self.border as usize;
+        format!(
+            "{left}{line}{right}",
+            left = " ".repeat(base_size + ((width - len) % 2)),
+            line = s,
+            right = " ".repeat(base_size)
+        )
+    }
+
+    #[inline(always)]
+    fn write_frame_line(&self, y: u16, length: u16) -> String {
+        self.goto_internal(0, y)
+            + &FRAME_CHAR_HORIZONTAL
+                .to_string()
+                .repeat(length as usize)
+    }
+
     #[inline(always)]
     fn write_clear_to_end(&self, s: &str) -> String {
         let clear_length = self.size().0 as usize
@@ -79,25 +100,14 @@ impl Frame {
         out_words.concat()
     }
 
-    #[inline(always)]
-    fn write_frame_line(&self, y: u16, length: u16) -> String {
-        self.goto_internal(0, y)
-            + &FRAME_CHAR_HORIZONTAL
-                .to_string()
-                .repeat(length as usize)
-    }
-
     pub fn write_centered(&self, s: &str, y: u16) -> String {
-        let (width, _) = self.size();
         let words = s.split('\n').collect::<Vec<&str>>();
         let mut out_words = Vec::with_capacity(words.len());
         for i in 0..words.len() {
-            let word = words[i];
-            let x = width - (word.len() as u16).min(width);
             out_words.push(format!(
                 "{ret}{str}",
-                str = word,
+                ret = self.goto(0, y + i as u16),
-                ret = self.goto(x / 2, y + i as u16),
+                str = self.write_centered_clear(words[i]),
             ));
         }
         out_words.concat()