Fix shrinking in non strech alignments while retaining legacy behaviour

Summary: This fixes shrinking of elements which are in a non stretch alignment, but keeps the legacy stretch behaviour in place. Additionally this adds a testcase for ```useLegacyStretchBehaviour``` Fixes #633 Closes https://github.com/facebook/yoga/pull/635 Differential Revision: D6408037 Pulled By: emilsjolander fbshipit-source-id: 377ab0308dd3a75a148a0af31ab5eb3ffb5b5d83
2017-11-27 03:09:47 -08:00
parent 5aa0f44a9b
commit 5e39f1a57c
7 changed files with 903 additions and 1 deletions
--- a/csharp/tests/Facebook.Yoga/YGAlignItemsTest.cs
+++ b/csharp/tests/Facebook.Yoga/YGAlignItemsTest.cs
@@ -1958,5 +1958,211 @@ namespace Facebook.Yoga
            Assert.AreEqual(20f, root_child0_child0_child0.LayoutHeight);
        }

+        [Test]
+        public void Test_align_flex_start_with_shrinking_children()
+        {
+            YogaConfig config = new YogaConfig();
+
+            YogaNode root = new YogaNode(config);
+            root.Width = 500;
+            root.Height = 500;
+
+            YogaNode root_child0 = new YogaNode(config);
+            root_child0.AlignItems = YogaAlign.FlexStart;
+            root.Insert(0, root_child0);
+
+            YogaNode root_child0_child0 = new YogaNode(config);
+            root_child0_child0.FlexGrow = 1;
+            root_child0_child0.FlexShrink = 1;
+            root_child0.Insert(0, root_child0_child0);
+
+            YogaNode root_child0_child0_child0 = new YogaNode(config);
+            root_child0_child0_child0.FlexGrow = 1;
+            root_child0_child0_child0.FlexShrink = 1;
+            root_child0_child0.Insert(0, root_child0_child0_child0);
+            root.StyleDirection = YogaDirection.LTR;
+            root.CalculateLayout();
+
+            Assert.AreEqual(0f, root.LayoutX);
+            Assert.AreEqual(0f, root.LayoutY);
+            Assert.AreEqual(500f, root.LayoutWidth);
+            Assert.AreEqual(500f, root.LayoutHeight);
+
+            Assert.AreEqual(0f, root_child0.LayoutX);
+            Assert.AreEqual(0f, root_child0.LayoutY);
+            Assert.AreEqual(500f, root_child0.LayoutWidth);
+            Assert.AreEqual(0f, root_child0.LayoutHeight);
+
+            Assert.AreEqual(0f, root_child0_child0.LayoutX);
+            Assert.AreEqual(0f, root_child0_child0.LayoutY);
+            Assert.AreEqual(0f, root_child0_child0.LayoutWidth);
+            Assert.AreEqual(0f, root_child0_child0.LayoutHeight);
+
+            Assert.AreEqual(0f, root_child0_child0_child0.LayoutX);
+            Assert.AreEqual(0f, root_child0_child0_child0.LayoutY);
+            Assert.AreEqual(0f, root_child0_child0_child0.LayoutWidth);
+            Assert.AreEqual(0f, root_child0_child0_child0.LayoutHeight);
+
+            root.StyleDirection = YogaDirection.RTL;
+            root.CalculateLayout();
+
+            Assert.AreEqual(0f, root.LayoutX);
+            Assert.AreEqual(0f, root.LayoutY);
+            Assert.AreEqual(500f, root.LayoutWidth);
+            Assert.AreEqual(500f, root.LayoutHeight);
+
+            Assert.AreEqual(0f, root_child0.LayoutX);
+            Assert.AreEqual(0f, root_child0.LayoutY);
+            Assert.AreEqual(500f, root_child0.LayoutWidth);
+            Assert.AreEqual(0f, root_child0.LayoutHeight);
+
+            Assert.AreEqual(500f, root_child0_child0.LayoutX);
+            Assert.AreEqual(0f, root_child0_child0.LayoutY);
+            Assert.AreEqual(0f, root_child0_child0.LayoutWidth);
+            Assert.AreEqual(0f, root_child0_child0.LayoutHeight);
+
+            Assert.AreEqual(0f, root_child0_child0_child0.LayoutX);
+            Assert.AreEqual(0f, root_child0_child0_child0.LayoutY);
+            Assert.AreEqual(0f, root_child0_child0_child0.LayoutWidth);
+            Assert.AreEqual(0f, root_child0_child0_child0.LayoutHeight);
+        }
+
+        [Test]
+        public void Test_align_flex_start_with_stretching_children()
+        {
+            YogaConfig config = new YogaConfig();
+
+            YogaNode root = new YogaNode(config);
+            root.Width = 500;
+            root.Height = 500;
+
+            YogaNode root_child0 = new YogaNode(config);
+            root.Insert(0, root_child0);
+
+            YogaNode root_child0_child0 = new YogaNode(config);
+            root_child0_child0.FlexGrow = 1;
+            root_child0_child0.FlexShrink = 1;
+            root_child0.Insert(0, root_child0_child0);
+
+            YogaNode root_child0_child0_child0 = new YogaNode(config);
+            root_child0_child0_child0.FlexGrow = 1;
+            root_child0_child0_child0.FlexShrink = 1;
+            root_child0_child0.Insert(0, root_child0_child0_child0);
+            root.StyleDirection = YogaDirection.LTR;
+            root.CalculateLayout();
+
+            Assert.AreEqual(0f, root.LayoutX);
+            Assert.AreEqual(0f, root.LayoutY);
+            Assert.AreEqual(500f, root.LayoutWidth);
+            Assert.AreEqual(500f, root.LayoutHeight);
+
+            Assert.AreEqual(0f, root_child0.LayoutX);
+            Assert.AreEqual(0f, root_child0.LayoutY);
+            Assert.AreEqual(500f, root_child0.LayoutWidth);
+            Assert.AreEqual(0f, root_child0.LayoutHeight);
+
+            Assert.AreEqual(0f, root_child0_child0.LayoutX);
+            Assert.AreEqual(0f, root_child0_child0.LayoutY);
+            Assert.AreEqual(500f, root_child0_child0.LayoutWidth);
+            Assert.AreEqual(0f, root_child0_child0.LayoutHeight);
+
+            Assert.AreEqual(0f, root_child0_child0_child0.LayoutX);
+            Assert.AreEqual(0f, root_child0_child0_child0.LayoutY);
+            Assert.AreEqual(500f, root_child0_child0_child0.LayoutWidth);
+            Assert.AreEqual(0f, root_child0_child0_child0.LayoutHeight);
+
+            root.StyleDirection = YogaDirection.RTL;
+            root.CalculateLayout();
+
+            Assert.AreEqual(0f, root.LayoutX);
+            Assert.AreEqual(0f, root.LayoutY);
+            Assert.AreEqual(500f, root.LayoutWidth);
+            Assert.AreEqual(500f, root.LayoutHeight);
+
+            Assert.AreEqual(0f, root_child0.LayoutX);
+            Assert.AreEqual(0f, root_child0.LayoutY);
+            Assert.AreEqual(500f, root_child0.LayoutWidth);
+            Assert.AreEqual(0f, root_child0.LayoutHeight);
+
+            Assert.AreEqual(0f, root_child0_child0.LayoutX);
+            Assert.AreEqual(0f, root_child0_child0.LayoutY);
+            Assert.AreEqual(500f, root_child0_child0.LayoutWidth);
+            Assert.AreEqual(0f, root_child0_child0.LayoutHeight);
+
+            Assert.AreEqual(0f, root_child0_child0_child0.LayoutX);
+            Assert.AreEqual(0f, root_child0_child0_child0.LayoutY);
+            Assert.AreEqual(500f, root_child0_child0_child0.LayoutWidth);
+            Assert.AreEqual(0f, root_child0_child0_child0.LayoutHeight);
+        }
+
+        [Test]
+        public void Test_align_flex_start_with_shrinking_children_with_stretch()
+        {
+            YogaConfig config = new YogaConfig();
+
+            YogaNode root = new YogaNode(config);
+            root.Width = 500;
+            root.Height = 500;
+
+            YogaNode root_child0 = new YogaNode(config);
+            root_child0.AlignItems = YogaAlign.FlexStart;
+            root.Insert(0, root_child0);
+
+            YogaNode root_child0_child0 = new YogaNode(config);
+            root_child0_child0.FlexGrow = 1;
+            root_child0_child0.FlexShrink = 1;
+            root_child0.Insert(0, root_child0_child0);
+
+            YogaNode root_child0_child0_child0 = new YogaNode(config);
+            root_child0_child0_child0.FlexGrow = 1;
+            root_child0_child0_child0.FlexShrink = 1;
+            root_child0_child0.Insert(0, root_child0_child0_child0);
+            root.StyleDirection = YogaDirection.LTR;
+            root.CalculateLayout();
+
+            Assert.AreEqual(0f, root.LayoutX);
+            Assert.AreEqual(0f, root.LayoutY);
+            Assert.AreEqual(500f, root.LayoutWidth);
+            Assert.AreEqual(500f, root.LayoutHeight);
+
+            Assert.AreEqual(0f, root_child0.LayoutX);
+            Assert.AreEqual(0f, root_child0.LayoutY);
+            Assert.AreEqual(500f, root_child0.LayoutWidth);
+            Assert.AreEqual(0f, root_child0.LayoutHeight);
+
+            Assert.AreEqual(0f, root_child0_child0.LayoutX);
+            Assert.AreEqual(0f, root_child0_child0.LayoutY);
+            Assert.AreEqual(0f, root_child0_child0.LayoutWidth);
+            Assert.AreEqual(0f, root_child0_child0.LayoutHeight);
+
+            Assert.AreEqual(0f, root_child0_child0_child0.LayoutX);
+            Assert.AreEqual(0f, root_child0_child0_child0.LayoutY);
+            Assert.AreEqual(0f, root_child0_child0_child0.LayoutWidth);
+            Assert.AreEqual(0f, root_child0_child0_child0.LayoutHeight);
+
+            root.StyleDirection = YogaDirection.RTL;
+            root.CalculateLayout();
+
+            Assert.AreEqual(0f, root.LayoutX);
+            Assert.AreEqual(0f, root.LayoutY);
+            Assert.AreEqual(500f, root.LayoutWidth);
+            Assert.AreEqual(500f, root.LayoutHeight);
+
+            Assert.AreEqual(0f, root_child0.LayoutX);
+            Assert.AreEqual(0f, root_child0.LayoutY);
+            Assert.AreEqual(500f, root_child0.LayoutWidth);
+            Assert.AreEqual(0f, root_child0.LayoutHeight);
+
+            Assert.AreEqual(500f, root_child0_child0.LayoutX);
+            Assert.AreEqual(0f, root_child0_child0.LayoutY);
+            Assert.AreEqual(0f, root_child0_child0.LayoutWidth);
+            Assert.AreEqual(0f, root_child0_child0.LayoutHeight);
+
+            Assert.AreEqual(0f, root_child0_child0_child0.LayoutX);
+            Assert.AreEqual(0f, root_child0_child0_child0.LayoutY);
+            Assert.AreEqual(0f, root_child0_child0_child0.LayoutWidth);
+            Assert.AreEqual(0f, root_child0_child0_child0.LayoutHeight);
+        }
+
    }
 }