summaryrefslogtreecommitdiff
path: root/Xamarin.Forms.Core/BoundsConstraint.cs
diff options
context:
space:
mode:
authorJason Smith <jason.smith@xamarin.com>2016-03-22 13:02:25 -0700
committerJason Smith <jason.smith@xamarin.com>2016-03-22 16:13:41 -0700
commit17fdde66d94155fc62a034fa6658995bef6fd6e5 (patch)
treeb5e5073a2a7b15cdbe826faa5c763e270a505729 /Xamarin.Forms.Core/BoundsConstraint.cs
downloadxamarin-forms-17fdde66d94155fc62a034fa6658995bef6fd6e5.tar.gz
xamarin-forms-17fdde66d94155fc62a034fa6658995bef6fd6e5.tar.bz2
xamarin-forms-17fdde66d94155fc62a034fa6658995bef6fd6e5.zip
Initial import
Diffstat (limited to 'Xamarin.Forms.Core/BoundsConstraint.cs')
-rw-r--r--Xamarin.Forms.Core/BoundsConstraint.cs34
1 files changed, 34 insertions, 0 deletions
diff --git a/Xamarin.Forms.Core/BoundsConstraint.cs b/Xamarin.Forms.Core/BoundsConstraint.cs
new file mode 100644
index 00000000..43be86eb
--- /dev/null
+++ b/Xamarin.Forms.Core/BoundsConstraint.cs
@@ -0,0 +1,34 @@
+using System;
+using System.Collections.Generic;
+using System.Linq.Expressions;
+
+namespace Xamarin.Forms
+{
+ public class BoundsConstraint
+ {
+ Func<Rectangle> _measureFunc;
+
+ BoundsConstraint()
+ {
+ }
+
+ internal IEnumerable<View> RelativeTo { get; set; }
+
+ public static BoundsConstraint FromExpression(Expression<Func<Rectangle>> expression, IEnumerable<View> parents = null)
+ {
+ Func<Rectangle> compiled = expression.Compile();
+ var result = new BoundsConstraint
+ {
+ _measureFunc = compiled,
+ RelativeTo = parents ?? ExpressionSearch.Default.FindObjects<View>(expression).ToArray() // make sure we have our own copy
+ };
+
+ return result;
+ }
+
+ internal Rectangle Compute()
+ {
+ return _measureFunc();
+ }
+ }
+} \ No newline at end of file