public void cloning_two_levels()
{
YogaConfig config = new YogaConfig {
PrintTree = true
};
YogaNode rootChild0, rootChild1, rootChild10, rootChild11;
YogaNode root =
Node(config, width: 100, height: 100)
.Add(rootChild0 = Node(config, flexGrow: 1, flexBasis: 15))
.Add(rootChild1 = Node(config, flexGrow: 1)
.Add(rootChild10 = Node(config, flexBasis: 10, flexGrow: 1))
.Add(rootChild11 = Node(config, flexBasis: 25)));
YogaArrange.CalculateLayout(root, YogaValue.YGUndefined, YogaValue.YGUndefined, Direction.LTR);
Assert.AreEqual(40, rootChild0.Layout.Height);
Assert.AreEqual(60, rootChild1.Layout.Height);
Assert.AreEqual(35, rootChild10.Layout.Height);
Assert.AreEqual(25, rootChild11.Layout.Height);
YogaNode root2Child0 = YogaNode.Clone(rootChild0);
YogaNode root2Child1 = YogaNode.Clone(rootChild1);
YogaNode root2 = YogaNode.Clone(root);
root2Child0.Style.FlexGrow = 0;
root2Child0.Style.FlexBasis = 40;
root2.Children.Clear();
root2.Children.Add(root2Child0);
root2.Children.Add(root2Child1);
Assert.AreEqual(2, root.ChildCount);
YogaArrange.CalculateLayout(root2, YogaValue.YGUndefined, YogaValue.YGUndefined, Direction.LTR);
// Original root is unchanged
Assert.AreEqual(40, rootChild0.Layout.Height);
Assert.AreEqual(60, rootChild1.Layout.Height);
Assert.AreEqual(35, rootChild10.Layout.Height);
Assert.AreEqual(25, rootChild11.Layout.Height);
// New root has new layout at the top
Assert.AreEqual(40, root2Child0.Layout.Height);
Assert.AreEqual(60, root2Child1.Layout.Height);
// The deeper children are untouched.
Assert.AreEqual(rootChild10, root2Child1.Children[0]);
Assert.AreEqual(rootChild11, root2Child1.Children[1]);
}
public void cloning_and_freeing()
{
YogaConfig config = new YogaConfig {
PrintTree = true
};
YogaNode root = Node(config, width: 100, height: 100)
.Add(Node(config))
.Add(Node(config));
YogaArrange.CalculateLayout(root, YogaValue.YGUndefined, YogaValue.YGUndefined, Direction.LTR);
YogaNode root2 = YogaNode.Clone(root);
YogaArrange.CalculateLayout(root2, YogaValue.YGUndefined, YogaValue.YGUndefined, Direction.LTR);
}
public void mutating_children_of_a_clone_clones()
{
YogaConfig config = new YogaConfig
{
PrintTree = true
};
YogaNode root = Node(config);
Assert.AreEqual(0, root.ChildCount);
YogaNode root2 = YogaNode.Clone(root);
Assert.AreEqual(0, root.ChildCount);
YogaNode root2Child0 = new YogaNode(config);
root2.Children.Add(root2Child0);
Assert.AreEqual(0, root.ChildCount);
Assert.AreEqual(1, root2.ChildCount);
YogaNode root3 = YogaNode.Clone(root2);
Assert.AreEqual(1, root2.ChildCount);
Assert.AreEqual(1, root3.ChildCount);
Assert.AreEqual(root2.Children[0], root3.Children[0]);
YogaNode root3Child1 = new YogaNode(config);
root3.Children.Add(root3Child1);
Assert.AreEqual(1, root2.ChildCount);
Assert.AreEqual(2, root3.ChildCount);
Assert.AreEqual(root3Child1, root3.Children[1]);
Assert.IsFalse(ReferenceEquals(root2.Children[0], root3.Children[1]));
YogaNode root4 = YogaNode.Clone(root3);
Assert.AreEqual(root3Child1, root4.Children[1]);
root4.Children.Remove(root3Child1);
Assert.AreEqual(2, root3.ChildCount);
Assert.AreEqual(1, root4.ChildCount);
//Assert.IsFalse(ReferenceEquals(root3.Children[0], root4.Children[0]));
}
public void cloning_shared_root()
{
YogaConfig config = new YogaConfig {
PrintTree = true
};
YogaNode rootChild0, rootChild1;
YogaNode root = Node(config, width: 100, height: 100)
.Add(rootChild0 = Node(flexGrow: 1, flexBasis: 50))
.Add(rootChild1 = Node(flexGrow: 1));
YogaArrange.CalculateLayout(root, YogaValue.YGUndefined, YogaValue.YGUndefined, Direction.LTR);
Assert.AreEqual(0, root.Layout.Left);
Assert.AreEqual(0, root.Layout.Top);
Assert.AreEqual(100, root.Layout.Width);
Assert.AreEqual(100, root.Layout.Height);
Assert.AreEqual(0, rootChild0.Layout.Left);
Assert.AreEqual(0, rootChild0.Layout.Top);
Assert.AreEqual(100, rootChild0.Layout.Width);
Assert.AreEqual(75, rootChild0.Layout.Height);
Assert.AreEqual(0, rootChild1.Layout.Left);
Assert.AreEqual(75, rootChild1.Layout.Top);
Assert.AreEqual(100, rootChild1.Layout.Width);
Assert.AreEqual(25, rootChild1.Layout.Height);
YogaNode root2 = YogaNode.Clone(root);
root2.Style.Width = 100;
Assert.AreEqual(2, root.ChildCount);
// The children should have referential equality at this point.
Assert.AreEqual(rootChild0, root2.Children[0]);
Assert.AreEqual(rootChild1, root2.Children[1]);
YogaArrange.CalculateLayout(root2, YogaValue.YGUndefined, YogaValue.YGUndefined, Direction.LTR);
Assert.AreEqual(2, root.ChildCount);
// Re-layout with no changed input should result in referential equality.
Assert.AreEqual(rootChild0, root2.Children[0]);
Assert.AreEqual(rootChild1, root2.Children[1]);
root2.Style.Width = 150;
root2.Style.Height = 200;
YogaArrange.CalculateLayout(root2, YogaValue.YGUndefined, YogaValue.YGUndefined, Direction.LTR);
Assert.AreEqual(2, root2.ChildCount);
// Re-layout with changed input should result in cloned children.
YogaNode root2Child0 = root2.Children[0];
YogaNode root2Child1 = root2.Children[1];
Assert.AreNotEqual(rootChild0, root2Child0);
Assert.AreNotEqual(rootChild1, root2Child1);
// Everything in the root should remain unchanged.
Assert.AreEqual(0, root.Layout.Left);
Assert.AreEqual(0, root.Layout.Top);
Assert.AreEqual(100, root.Layout.Width);
Assert.AreEqual(100, root.Layout.Height);
Assert.AreEqual(0, rootChild0.Layout.Left);
Assert.AreEqual(0, rootChild0.Layout.Top);
Assert.AreEqual(100, rootChild0.Layout.Width);
Assert.AreEqual(75, rootChild0.Layout.Height);
Assert.AreEqual(0, rootChild1.Layout.Left);
Assert.AreEqual(75, rootChild1.Layout.Top);
Assert.AreEqual(100, rootChild1.Layout.Width);
Assert.AreEqual(25, rootChild1.Layout.Height);
// The new root now has new layout.
Assert.AreEqual(0, root2.Layout.Left);
Assert.AreEqual(0, root2.Layout.Top);
Assert.AreEqual(150, root2.Layout.Width);
Assert.AreEqual(200, root2.Layout.Height);
Assert.AreEqual(0, root2Child0.Layout.Left);
Assert.AreEqual(0, root2Child0.Layout.Top);
Assert.AreEqual(150, root2Child0.Layout.Width);
Assert.AreEqual(125, root2Child0.Layout.Height);
Assert.AreEqual(0, root2Child1.Layout.Left);
Assert.AreEqual(125, root2Child1.Layout.Top);
Assert.AreEqual(150, root2Child1.Layout.Width);
Assert.AreEqual(75, root2Child1.Layout.Height);
}