From 8acf39365c14abe7730ca1d57d46f0aae38233d8 Mon Sep 17 00:00:00 2001
From: Jean-Marie Verdun <verdun@splitted-desktop.com>
Date: Tue, 31 Jan 2017 23:02:40 +0100
Subject: [PATCH] Add an update timer to the progress bar set to 500ms instead
 of nothing. STEP Reader is updating the progress bar every time a new Shape
 is decoded/transferred and loaded, which is a huge amount of "interrupt" and
 slow down drastically the global performance

---
 src/Gui/ProgressBar.cpp | 13 ++++++++-----
 1 file changed, 8 insertions(+), 5 deletions(-)

diff --git a/src/Gui/ProgressBar.cpp b/src/Gui/ProgressBar.cpp
index 67f1df74e1..ba5f2e83bd 100644
--- a/src/Gui/ProgressBar.cpp
+++ b/src/Gui/ProgressBar.cpp
@@ -215,11 +215,14 @@ void Sequencer::setValue(int step)
                 showRemainingTime();
         }
         else {
-            d->bar->setValue(step);
-            if (d->bar->isVisible())
-                showRemainingTime();
-            d->bar->resetObserveEventFilter();
-            qApp->processEvents();
+	    int elapsed = d->progressTime.restart();
+	    if (elapsed > 500) {
+	            d->bar->setValue(step);
+	            if (d->bar->isVisible())
+	                showRemainingTime();
+	            d->bar->resetObserveEventFilter();
+	            qApp->processEvents();
+	    }
         }
     }
 }