From e91127bc5cfde808d19272280c91789482ef5a59 Mon Sep 17 00:00:00 2001
From: ZappoMan <bradh@konamoxt.com>
Date: Fri, 11 Oct 2013 14:56:37 -0700
Subject: [PATCH] implement hide cursor on no mouse movement

---
 interface/src/Application.cpp | 17 +++++++++++++++++
 interface/src/Application.h   |  2 ++
 2 files changed, 19 insertions(+)

diff --git a/interface/src/Application.cpp b/interface/src/Application.cpp
index bdd1f8379f..a90244cd21 100644
--- a/interface/src/Application.cpp
+++ b/interface/src/Application.cpp
@@ -105,6 +105,8 @@ Application::Application(int& argc, char** argv, timeval &startup_time) :
         _profile(QString()),
         _mouseX(0),
         _mouseY(0),
+        _lastMouseMove(usecTimestampNow()),
+        _mouseHidden(false),
         _touchAvgX(0.0f),
         _touchAvgY(0.0f),
         _isTouchPressed(false),
@@ -978,6 +980,12 @@ void Application::keyReleaseEvent(QKeyEvent* event) {
 }
 
 void Application::mouseMoveEvent(QMouseEvent* event) {
+    _lastMouseMove = usecTimestampNow();
+    if (_mouseHidden) {
+        getGLWidget()->setCursor(Qt::ArrowCursor);
+        _mouseHidden = false;
+    }
+
     if (activeWindow() == _window) {
         _mouseX = event->x();
         _mouseY = event->y();
@@ -2119,6 +2127,15 @@ void Application::update(float deltaTime) {
     _audio.setLastVelocity(_myAvatar.getVelocity());
     _audio.eventuallyAnalyzePing();
     #endif
+    
+    // watch mouse position, if it hasn't moved, hide the cursor
+    uint64_t now = usecTimestampNow();
+    int elapsed = now - _lastMouseMove;
+    const int HIDE_CURSOR_TIMEOUT = 1 * 1000 * 1000; // 1 second
+    if (elapsed > HIDE_CURSOR_TIMEOUT) {
+        getGLWidget()->setCursor(Qt::BlankCursor);
+        _mouseHidden = true;
+    }
 }
 
 void Application::updateAvatar(float deltaTime) {
diff --git a/interface/src/Application.h b/interface/src/Application.h
index c030b61a74..cb3a3ca73d 100644
--- a/interface/src/Application.h
+++ b/interface/src/Application.h
@@ -305,6 +305,8 @@ private:
     int _mouseY;
     int _mouseDragStartedX;
     int _mouseDragStartedY;
+    uint64_t _lastMouseMove;
+    bool _mouseHidden;
 
     float _touchAvgX;
     float _touchAvgY;