test/ElmSharp.Test/TC/GestureLayerTest1.cs

   1 using System;
   2 using ElmSharp;
   3 using System.Collections.Generic;
   4
   5 namespace ElmSharp.Test
   6 {
   7     class GestureLayerTest1 : TestCaseBase
   8     {
   9         public override string TestName => "GestureLayerTest1";
  10         public override string TestDescription => "Demonstrate GestureLayer features: Tap, DoubleTap, Rotate, Zoom detection.";
  11
  12         private GestureLayer _glayer;
  13         private Label _log;
  14         private List<string> _logEntries;
  15         private Background _background;
  16         private Rectangle _box1;
  17
  18         public override void Run(Window window)
  19         {
  20             _background = new Background(window);
  21             var windowSize = window.ScreenSize;
  22             _background.Color = Color.White;
  23             _background.Resize(windowSize.Width, windowSize.Height);
  24             _background.Show();
  25
  26             _box1 = new Rectangle(window)
  27                 {
  28                     Color = Color.Yellow
  29                 };
  30             _box1.Resize(400, 600);
  31             _box1.Move(160, 160);
  32             _box1.Show();
  33
  34             _log = new Label(window);
  35             _log.Resize(700, 1280 - 780);
  36             _log.Move(10, 770);
  37             _log.Show();
  38             _logEntries = new List<string>();
  39             Log("Double tap to register additional gestures. Tripple tap to unregister them.");
  40
  41             _glayer = new GestureLayer(_box1);
  42             _glayer.Attach(_box1);
  43
  44             _glayer.SetTapCallback(GestureLayer.GestureType.Tap, GestureLayer.GestureState.End, (info) => {
  45                 Log("Tap {0},{1}", info.X, info.Y);
  46             });
  47
  48             _glayer.SetTapCallback(GestureLayer.GestureType.DoubleTap, GestureLayer.GestureState.End, (info) => {
  49                 Log("DoubleTap {0},{1} {2}", info.X, info.Y, info.FingersCount);
  50                 _glayer.SetLineCallback(GestureLayer.GestureState.End, (line) => {
  51                     Log("Line {0},{1}-{2},{3}, M:{4},{5}", line.X1, line.Y1, line.X2, line.Y2, line.HorizontalMomentum, line.VerticalMomentum);
  52                 });
  53                 _glayer.SetFlickCallback(GestureLayer.GestureState.End, (flick) => {
  54                     Log("Flick {0},{1}-{2},{3}, M:{4},{5}", flick.X1, flick.Y1, flick.X2, flick.Y2, flick.HorizontalMomentum, flick.VerticalMomentum);
  55                 });
  56                 _glayer.RotateStep = 3;
  57                 _glayer.SetRotateCallback(GestureLayer.GestureState.Move, (rotate) => {
  58                     Log("Rotation {0},{1} a:{2:F3} ba:{3:F3}", rotate.X, rotate.Y, rotate.Angle, rotate.BaseAngle);
  59                 });
  60                 _glayer.SetZoomCallback(GestureLayer.GestureState.End, (zoom) => {
  61                     Log("Zoom {0},{1} r:{2} z:{3:F3}", zoom.X, zoom.Y, zoom.Radius, zoom.Zoom);
  62                 });
  63                 Log("Line, Flick, Rotate, and Zoom callbacks enabled.");
  64             });
  65
  66             _glayer.SetTapCallback(GestureLayer.GestureType.TripleTap, GestureLayer.GestureState.End, (info) => {
  67                 Log("TrippleTap {0},{1} {2}", info.X, info.Y, info.FingersCount);
  68                 _glayer.SetLineCallback(GestureLayer.GestureState.End, null);
  69                 _glayer.SetFlickCallback(GestureLayer.GestureState.End, null);
  70                 _glayer.SetRotateCallback(GestureLayer.GestureState.Move, null);
  71                 _glayer.SetZoomCallback(GestureLayer.GestureState.End, null);
  72                 Log("Cleared Line, Flick, Rotate, and Zoom callbacks.");
  73             });
  74             // Momentum is not used, it seems that it conflicts with Rotate and Zoom
  75         }
  76
  77         private void Log(string format, params object[] args)
  78         {
  79             var entry = string.Format(format, args);
  80             if (_logEntries.Count > 15)
  81                 _logEntries.RemoveRange(0, _logEntries.Count - 15);
  82             _logEntries.Add(entry);
  83             _log.Text = string.Join("<br>", _logEntries);
  84         }
  85     }
  86 }