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-rw-r--r--Xamarin.Forms.Controls/GalleryPages/LayoutPerformanceGallery.cs116
1 files changed, 116 insertions, 0 deletions
diff --git a/Xamarin.Forms.Controls/GalleryPages/LayoutPerformanceGallery.cs b/Xamarin.Forms.Controls/GalleryPages/LayoutPerformanceGallery.cs
new file mode 100644
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--- /dev/null
+++ b/Xamarin.Forms.Controls/GalleryPages/LayoutPerformanceGallery.cs
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+´╗┐using System;
+using System.Collections.Generic;
+using System.Diagnostics;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace Xamarin.Forms.Controls.GalleryPages
+{
+ public class LayoutPerformanceGallery : ContentPage
+ {
+ public LayoutPerformanceGallery ()
+ {
+ int size = 3;
+
+ var grid = new Grid {
+ VerticalOptions = LayoutOptions.FillAndExpand,
+ RowDefinitions = {
+ new RowDefinition { Height = new GridLength (100, GridUnitType.Absolute) },
+ new RowDefinition { Height = new GridLength (5, GridUnitType.Star) },
+ new RowDefinition { Height = new GridLength (7, GridUnitType.Star) },
+ },
+ ColumnDefinitions = {
+ new ColumnDefinition { Width = new GridLength (3, GridUnitType.Star) },
+ new ColumnDefinition { Width = new GridLength (100, GridUnitType.Absolute) },
+ new ColumnDefinition { Width = new GridLength (7, GridUnitType.Star) },
+ }
+ };
+
+ for (int i = 0; i < size; i++) {
+ for (int j = 0; j < size; j++) {
+ var g = new Grid {
+ RowDefinitions = {
+ new RowDefinition { Height = new GridLength (100, GridUnitType.Absolute) },
+ new RowDefinition { Height = new GridLength (5, GridUnitType.Star) },
+ new RowDefinition { Height = new GridLength (7, GridUnitType.Star) },
+ },
+ ColumnDefinitions = {
+ new ColumnDefinition { Width = new GridLength (3, GridUnitType.Star) },
+ new ColumnDefinition { Width = new GridLength (100, GridUnitType.Absolute) },
+ new ColumnDefinition { Width = new GridLength (7, GridUnitType.Star) },
+ }
+ };
+
+ for (int k = 0; k < size; k++) {
+ for (int l = 0; l < size; l++) {
+ var label = new Label { Text = "10" };
+ g.Children.Add (label, k, l);
+ _labelList.Add (label);
+ }
+ }
+
+ grid.Children.Add (g, i, j);
+ }
+ }
+
+
+
+
+ Content = new StackLayout {
+ Children = {
+ (_mainLabel = new Label ()),
+ grid
+ }
+ };
+ }
+
+ Label _mainLabel = null;
+ List<Label> _labelList = new List<Label> ();
+ Stopwatch _sw = new Stopwatch ();
+ long _ticks = 0;
+ int _count = 0;
+ int _cycle = 0;
+ bool _flip = true;
+ Random _r = new Random (34269027);
+ bool _repeat = false;
+
+ protected override void OnAppearing ()
+ {
+ base.OnAppearing ();
+ _repeat = true;
+ Device.StartTimer (TimeSpan.FromMilliseconds (10), () => {
+ _sw.Start ();
+ foreach (var label in _labelList) {
+ if (_flip) {
+ label.Text = _r.Next (10, 40).ToString ();
+ } else {
+ label.Text = _r.Next (50, 90).ToString ();
+ }
+ }
+ _sw.Stop ();
+ _ticks += _sw.ElapsedMilliseconds;
+ _sw.Reset ();
+
+ _cycle = (_cycle + 1) % 100;
+ _count++;
+ if (_cycle == 0) {
+ _mainLabel.Text = string.Format ("Avg Time: {0:0.000}ms", _ticks / (double)_count);
+ }
+
+ _flip = !_flip;
+ return _repeat;
+ });
+ }
+
+ protected override void OnDisappearing ()
+ {
+ _repeat = false;
+ _ticks = 0;
+ _count = 0;
+ _cycle = 0;
+
+ base.OnDisappearing ();
+ }
+ }
+}