#3155 Slightly tweak X-autozoom so it zooms to the nearest outside minor tick.

* Looks much better and makes the problem of having tick labels overlap with neighbour tracks much rarer.

ApplicationCode/ProjectDataModel/RimWellLogPlot.cpp

@@ -643,6 +643,7 @@ void RimWellLogPlot::updateTracks(bool autoScaleXAxis)
             {
                 m_tracks[tIdx]->setAutoScaleXEnabled(true);
                 m_tracks[tIdx]->calculateXZoomRangeAndUpdateQwt();
+                m_tracks[tIdx]->updateAxisAndGridTickIntervals();
             }
         }
 

ApplicationCode/ProjectDataModel/RimWellLogTrack.cpp

@@ -248,7 +248,6 @@ void RimWellLogTrack::fieldChangedByUi(const caf::PdmFieldHandle* changedField,
     {
         updateParentPlotLayout();
         updateAxisAndGridTickIntervals();
-        m_wellLogTrackPlotWidget->replot();
     }
     else if (changedField == &m_explicitTickIntervals)
     {
@@ -262,7 +261,6 @@ void RimWellLogTrack::fieldChangedByUi(const caf::PdmFieldHandle* changedField,
         if (!m_explicitTickIntervals())
         {
             updateAxisAndGridTickIntervals();
-            m_wellLogTrackPlotWidget->replot();
         }
     }
     else if (changedField == &m_xAxisGridVisibility ||
@@ -270,7 +268,6 @@ void RimWellLogTrack::fieldChangedByUi(const caf::PdmFieldHandle* changedField,
              changedField == &m_minorTickInterval)
     {
         updateAxisAndGridTickIntervals();
-        m_wellLogTrackPlotWidget->replot();
     }
     else if (changedField == &m_visibleXRangeMin || changedField == &m_visibleXRangeMax)
     {
@@ -284,7 +281,6 @@ void RimWellLogTrack::fieldChangedByUi(const caf::PdmFieldHandle* changedField,
         updateEditors();
         updateParentPlotLayout();
         updateAxisAndGridTickIntervals();
-        m_wellLogTrackPlotWidget->replot(); // TODO: See if we can get rid of duplicate replot
     }
     else if (changedField == &m_isAutoScaleXEnabled)
     {
@@ -495,6 +491,7 @@ void RimWellLogTrack::updateAxisAndGridTickIntervals()
         m_wellLogTrackPlotWidget->enableDepthGridLines(true, true);
         break;
     }
+    m_wellLogTrackPlotWidget->replot();
 }
 
 //--------------------------------------------------------------------------------------------------
@@ -977,6 +974,11 @@ void RimWellLogTrack::calculateXZoomRange()
         }
     }
 
+    if (m_minorTickInterval() != 0.0)
+    {
+        std::tie(minValue, maxValue) = adjustXRange(minValue, maxValue, m_minorTickInterval());
+    }
+
     m_visibleXRangeMin = minValue;
     m_visibleXRangeMax = maxValue;
 
@@ -1186,6 +1188,18 @@ bool RimWellLogTrack::isFirstVisibleTrackInPlot() const
     return plot->firstVisibleTrackIndex() == ownIndex;
 }
 
+//--------------------------------------------------------------------------------------------------
+///
+//--------------------------------------------------------------------------------------------------
+std::pair<double, double> RimWellLogTrack::adjustXRange(double minValue, double maxValue, double tickInterval)
+{
+    double minRemainder = std::fmod(minValue, tickInterval);
+    double maxRemainder = std::fmod(maxValue, tickInterval);
+    double adjustedMin = minValue - minRemainder;
+    double adjustedMax = maxValue + (tickInterval - maxRemainder);
+    return std::make_pair(adjustedMin, adjustedMax);
+}
+
 //--------------------------------------------------------------------------------------------------
 /// 
 //--------------------------------------------------------------------------------------------------

ApplicationCode/ProjectDataModel/RimWellLogTrack.h

@@ -131,11 +131,11 @@ public:
     void uiOrderingForXAxisSettings(caf::PdmUiOrdering& uiOrdering);
 
     void setFormationsForCaseWithSimWellOnly(bool caseWithSimWellOnly);
+    void updateAxisAndGridTickIntervals();
 
 private:
     virtual void fieldChangedByUi(const caf::PdmFieldHandle* changedField, const QVariant& oldValue, const QVariant& newValue) override;
     void         updateParentPlotLayout();
-    void         updateAxisAndGridTickIntervals();
     virtual QList<caf::PdmOptionItemInfo> calculateValueOptions(const caf::PdmFieldHandle* fieldNeedingOptions, bool * useOptionsOnly) override;
 
     virtual caf::PdmFieldHandle* objectToggleField() override;
@@ -168,6 +168,8 @@ private:
     void updateAxisScaleEngine();
     bool isFirstVisibleTrackInPlot() const;
 
+    std::pair<double, double> adjustXRange(double minValue, double maxValue, double tickInterval);
+
 private:
     QString m_xAxisTitle;
 

ApplicationCode/UserInterface/RiuWellLogPlot.cpp

@@ -380,7 +380,7 @@ void RiuWellLogPlot::placeChildWidgets(int frameHeight, int frameWidth)
 
     positionTitle(frameWidth);
 
-    const int trackPadding = 0;
+    const int trackPadding = 2;
 
     std::map<int, int> trackWidths = calculateTrackWidthsToMatchFrame(frameWidth);
     size_t visibleTrackCount = trackWidths.size();