Fix display server lag

This commit reverts commit 3d44c40. Calling window.title() was causing
the X11 display server to go from 1% to 20% constant CPU usage when
testing on Linux.

1 files changed, 4 insertions, 1 deletions

diff --git a/src/window.rs b/src/window.rs
index c5a4b09..b280a36 100644
--- a/src/window.rs
+++ b/src/window.rs
@@ -16,6 +16,7 @@ pub struct Window {
     render_request: RenderRequest,
     previous_cursor_position: Option<Point>,
     previous_cursor_icon: CursorIcon,
+    previous_title: String,
 }
 
 impl Window {
@@ -57,6 +58,7 @@ impl Window {
             render_request: RenderRequest::REDRAW,
             previous_cursor_position: None,
             previous_cursor_icon: CursorIcon::Default,
+            previous_title: String::new(),
         }
     }
 
@@ -66,8 +68,9 @@ impl Window {
 
     pub fn update_title(&mut self) {
         let title = self.controller.title();
-        if title != self.window.title() {
+        if title != self.previous_title {
             self.window.set_title(&title);
+            self.previous_title = title;
         }
     }