From ab5ae5ad49ce2f9480acd7e2e0a85798154e3c4d Mon Sep 17 00:00:00 2001
From: Mark Watkins <jedimark@users.sourceforge.net>
Date: Sat, 9 Nov 2013 10:59:35 +1000
Subject: [PATCH] Added millisecond lock between Horizontal and Vertical
 Panning on Touchpads

---
 sleepyhead/Graphs/gGraphView.cpp | 23 ++++++++++++++++-------
 sleepyhead/Graphs/gGraphView.h   |  2 ++
 2 files changed, 18 insertions(+), 7 deletions(-)

diff --git a/sleepyhead/Graphs/gGraphView.cpp b/sleepyhead/Graphs/gGraphView.cpp
index e045832b..53d42326 100644
--- a/sleepyhead/Graphs/gGraphView.cpp
+++ b/sleepyhead/Graphs/gGraphView.cpp
@@ -2403,6 +2403,9 @@ gGraphView::gGraphView(QWidget *parent, gGraphView * shared) :
     m_selected_graph=NULL;
     cubetex=0;
 
+    horizScrollTime.start();
+    vertScrollTime.start();
+
     this->setMouseTracking(true);
     m_emptytext=QObject::tr("No Data");
     InitGraphs();
@@ -3852,12 +3855,20 @@ void gGraphView::wheelEvent(QWheelEvent * event)
             py+=graphSpacer; // do we want the extra spacer down the bottom?
         }
     } else {
-        // Vertical Scrolling
-        if (event->orientation()==Qt::Vertical) {
+        if (event->orientation()==Qt::Vertical) { // Vertical Scrolling
+            if (horizScrollTime.elapsed()<100)
+                return;
+
             m_scrollbar->SendWheelEvent(event); // Just forwarding the event to scrollbar for now..
             m_tooltip->cancel();
-        } else {
-            //Horinontal Panning
+            vertScrollTime.start();
+        } else { //Horizontal Panning
+            // (This is a total pain in the butt on MacBook touchpads..)
+
+            if (vertScrollTime.elapsed()<100)
+                return;
+
+            horizScrollTime.start();
             gGraph *g=NULL;
             int group=0;
 
@@ -3872,6 +3883,7 @@ void gGraphView::wheelEvent(QWheelEvent * event)
             }
 
             if (!g) {
+                // just pick any graph then
                 for (int i=0;i<m_graphs.size();i++) {
                     if (!m_graphs[i]->isEmpty()) {
                         g=m_graphs[i];
@@ -3887,9 +3899,6 @@ void gGraphView::wheelEvent(QWheelEvent * event)
 
             int delta=event->delta();
 
-
-
-
             if (delta > 0)
                 g->min_x-=(xx/zoom)*(float)abs(delta);
             else
diff --git a/sleepyhead/Graphs/gGraphView.h b/sleepyhead/Graphs/gGraphView.h
index b0b7e0e4..c03f1d86 100644
--- a/sleepyhead/Graphs/gGraphView.h
+++ b/sleepyhead/Graphs/gGraphView.h
@@ -1160,6 +1160,8 @@ protected:
     qint32 pixmap_cache_size;
     bool use_pixmap_cache;
 
+    QTime horizScrollTime, vertScrollTime;
+
 
     //QVector<GLuint> texid;
 signals: