From 3490d566624b3a4509d0dc9f0440ba3ae205ed70 Mon Sep 17 00:00:00 2001
From: ArthurSonzogni <sonzogniarthur@gmail.com>
Date: Mon, 1 Jun 2020 15:57:18 +0200
Subject: [PATCH] Improve performance.

Read all the input before drawing anything on the screen.
---
 src/ftxui/component/screen_interactive.cpp | 10 ++++++----
 1 file changed, 6 insertions(+), 4 deletions(-)

diff --git a/src/ftxui/component/screen_interactive.cpp b/src/ftxui/component/screen_interactive.cpp
index 89720796..5f4a6e42 100644
--- a/src/ftxui/component/screen_interactive.cpp
+++ b/src/ftxui/component/screen_interactive.cpp
@@ -272,10 +272,12 @@ void ScreenInteractive::Loop(Component* component) {
 
   // The main loop.
   while (!quit_) {
-    std::cout << reset_cursor_position << ResetPosition();
-    Draw(component);
-    std::cout << ToString() << set_cursor_position << std::flush;
-    Clear();
+    if (!event_receiver_->HasPending()) {
+      std::cout << reset_cursor_position << ResetPosition();
+      Draw(component);
+      std::cout << ToString() << set_cursor_position << std::flush;
+      Clear();
+    }
     Event event;
     if (event_receiver_->Receive(&event))
       component->OnEvent(event);