center content

src/menu.rs

@@ -2,7 +2,7 @@ use gopher;
 use gopher::Type;
 use std::io::stdout;
 use std::io::Write;
-use ui::{Action, Key, View};
+use ui::{Action, Key, View, MAX_COLS, SCROLL_LINES};
 
 pub struct MenuView {
     pub input: String, // user's inputted value
@@ -25,8 +25,6 @@ pub struct Line {
     link: usize, // link #, if any
 }
 
-const SCROLL_LINES: usize = 15;
-
 impl View for MenuView {
     fn render(&self, cols: usize, rows: usize) -> String {
         self.render_lines(cols, rows)
@@ -73,11 +71,15 @@ impl MenuView {
         }
 
         let iter = self.lines().iter().skip(self.scroll).take(rows - 1);
-
-        let indent = if self.menu.longest > cols {
+        let longest = if self.menu.longest > MAX_COLS {
+            MAX_COLS
+        } else {
+            self.menu.longest
+        };
+        let indent = if longest > cols {
             String::from("")
         } else {
-            let left = (cols - self.menu.longest) / 2;
+            let left = (cols - longest) / 2;
             if left > 6 {
                 " ".repeat(left - 6)
             } else {

src/text.rs

@@ -1,4 +1,4 @@
-use ui::{Action, Key, View};
+use ui::{Action, Key, View, MAX_COLS, SCROLL_LINES};
 
 pub struct TextView {
     url: String,
@@ -8,8 +8,6 @@ pub struct TextView {
     longest: usize, // longest line
 }
 
-const SCROLL_LINES: usize = 15;
-
 impl View for TextView {
     fn url(&self) -> String {
         self.url.to_string()
@@ -77,15 +75,16 @@ impl View for TextView {
 
     fn render(&self, cols: usize, rows: usize) -> String {
         let mut out = String::new();
-        let indent = if self.longest > cols {
+        let longest = if self.longest > MAX_COLS {
+            MAX_COLS
+        } else {
+            self.longest
+        };
+        let indent = if longest > cols {
             String::from("")
         } else {
-            let left = (cols - self.longest) / 2;
-            if left > 6 {
-                " ".repeat(left - 6)
-            } else {
-                String::from("")
-            }
+            let left = (cols - longest) / 2;
+            " ".repeat(left)
         };
         let iter = self
             .raw

src/ui.rs

@@ -10,6 +10,9 @@ use text::TextView;
 
 pub type Key = termion::event::Key;
 
+pub const SCROLL_LINES: usize = 15;
+pub const MAX_COLS: usize = 72;
+
 pub struct UI {
     pages: Vec<Box<dyn View>>,
     page: usize,   // currently focused page