From b70fab00c7bf8f3c2641a065e7dd137a642e881f Mon Sep 17 00:00:00 2001
From: Kris McGinnes <kmcginnes@me.com>
Date: Thu, 1 Dec 2016 08:31:08 -0600
Subject: [PATCH] Add Fill type of Ignored

---
 src/AutoGrid/StackPanel.cs | 18 +++++++++---------
 1 file changed, 9 insertions(+), 9 deletions(-)

diff --git a/src/AutoGrid/StackPanel.cs b/src/AutoGrid/StackPanel.cs
index 66e997e..e9f875c 100644
--- a/src/AutoGrid/StackPanel.cs
+++ b/src/AutoGrid/StackPanel.cs
@@ -17,7 +17,7 @@ protected override Size MeasureOverride(Size constraint)
             double accumulatedHeight = 0;
 
             var isHorizontal = Orientation == Orientation.Horizontal;
-            var totalMarginToAdd = CalculateTotalMarginToAdd(children, isHorizontal, MarginBetweenChildren);
+            var totalMarginToAdd = CalculateTotalMarginToAdd(children, MarginBetweenChildren);
 
             for (int i = 0; i < children.Count; i++)
             {
@@ -123,16 +123,16 @@ protected override Size ArrangeOverride(Size arrangeSize)
             var isHorizontal = Orientation == Orientation.Horizontal;
             var marginBetweenChildren = MarginBetweenChildren;
 
-            var totalMarginToAdd = CalculateTotalMarginToAdd(children, isHorizontal, marginBetweenChildren);
+            var totalMarginToAdd = CalculateTotalMarginToAdd(children, marginBetweenChildren);
 
             double allAutoSizedSum = 0.0;
             int countOfFillTypes = 0;
             foreach (var child in children.OfType<UIElement>())
             {
                 var fillType = GetFill(child);
-                if (fillType == StackPanelFill.Fill)
+                if (fillType != StackPanelFill.Auto)
                 {
-                    if (child.Visibility != Visibility.Collapsed)
+                    if (child.Visibility != Visibility.Collapsed && fillType != StackPanelFill.Ignored)
                         countOfFillTypes += 1;
                 }
                 else
@@ -152,10 +152,10 @@ protected override Size ArrangeOverride(Size arrangeSize)
                 UIElement child = children[i];
                 if (child == null) { continue; }
                 Size childDesiredSize = child.DesiredSize;
-                var isCollapsed = child.Visibility == Visibility.Collapsed;
+                var fillType = GetFill(child);
+                var isCollapsed = child.Visibility == Visibility.Collapsed || fillType == StackPanelFill.Ignored;
                 var isLastChild = i == totalChildrenCount - 1;
                 var marginToAdd = isLastChild || isCollapsed ? 0 : marginBetweenChildren;
-                var fillType = GetFill(child);
 
                 Rect rcChild = new Rect(
                     accumulatedLeft,
@@ -182,11 +182,11 @@ protected override Size ArrangeOverride(Size arrangeSize)
             return arrangeSize;
         }
 
-        static double CalculateTotalMarginToAdd(UIElementCollection children, bool isHorizontal, double marginBetweenChildren)
+        static double CalculateTotalMarginToAdd(UIElementCollection children, double marginBetweenChildren)
         {
             var visibleChildrenCount = children
                 .OfType<UIElement>()
-                .Count(x => x.Visibility != Visibility.Collapsed);
+                .Count(x => x.Visibility != Visibility.Collapsed && GetFill(x) != StackPanelFill.Ignored);
             var marginMultiplier = Math.Max(visibleChildrenCount - 1, 0);
             var totalMarginToAdd = marginBetweenChildren * marginMultiplier;
             return totalMarginToAdd;
@@ -240,6 +240,6 @@ public static StackPanelFill GetFill(DependencyObject element)
 
     public enum StackPanelFill
     {
-        Auto, Fill
+        Auto, Fill, Ignored
     }
 }