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using System;
using ElmSharp;
using System.Collections.Generic;
namespace ElmSharp.Test
{
class GestureLayerTest1 : TestCaseBase
{
public override string TestName => "GestureLayerTest1";
public override string TestDescription => "Demonstrate GestureLayer features: Tap, DoubleTap, Rotate, Zoom detection.";
private GestureLayer _glayer;
private Label _log;
private List<string> _logEntries;
private Background _background;
private Rectangle _box1;
public override void Run(Window window)
{
_background = new Background(window);
var windowSize = window.ScreenSize;
_background.Color = Color.White;
_background.Resize(windowSize.Width, windowSize.Height);
_background.Show();
_box1 = new Rectangle(window)
{
Color = Color.Yellow
};
_box1.Resize(400, 600);
_box1.Move(160, 160);
_box1.Show();
_log = new Label(window);
_log.Resize(700, 1280 - 780);
_log.Move(10, 770);
_log.Show();
_logEntries = new List<string>();
Log("Double tap to register additional gestures. Tripple tap to unregister them.");
_glayer = new GestureLayer(_box1);
_glayer.Attach(_box1);
_glayer.SetTapCallback(GestureLayer.GestureType.Tap, GestureLayer.GestureState.End, (info) => {
Log("Tap {0},{1}", info.X, info.Y);
});
_glayer.SetTapCallback(GestureLayer.GestureType.DoubleTap, GestureLayer.GestureState.End, (info) => {
Log("DoubleTap {0},{1} {2}", info.X, info.Y, info.FingersCount);
_glayer.SetLineCallback(GestureLayer.GestureState.End, (line) => {
Log("Line {0},{1}-{2},{3}, M:{4},{5}", line.X1, line.Y1, line.X2, line.Y2, line.HorizontalMomentum, line.VerticalMomentum);
});
_glayer.SetFlickCallback(GestureLayer.GestureState.End, (flick) => {
Log("Flick {0},{1}-{2},{3}, M:{4},{5}", flick.X1, flick.Y1, flick.X2, flick.Y2, flick.HorizontalMomentum, flick.VerticalMomentum);
});
_glayer.RotateStep = 3;
_glayer.SetRotateCallback(GestureLayer.GestureState.Move, (rotate) => {
Log("Rotation {0},{1} a:{2:F3} ba:{3:F3}", rotate.X, rotate.Y, rotate.Angle, rotate.BaseAngle);
});
_glayer.SetZoomCallback(GestureLayer.GestureState.End, (zoom) => {
Log("Zoom {0},{1} r:{2} z:{3:F3}", zoom.X, zoom.Y, zoom.Radius, zoom.Zoom);
});
Log("Line, Flick, Rotate, and Zoom callbacks enabled.");
});
_glayer.SetTapCallback(GestureLayer.GestureType.TripleTap, GestureLayer.GestureState.End, (info) => {
Log("TrippleTap {0},{1} {2}", info.X, info.Y, info.FingersCount);
_glayer.SetLineCallback(GestureLayer.GestureState.End, null);
_glayer.SetFlickCallback(GestureLayer.GestureState.End, null);
_glayer.SetRotateCallback(GestureLayer.GestureState.Move, null);
_glayer.SetZoomCallback(GestureLayer.GestureState.End, null);
Log("Cleared Line, Flick, Rotate, and Zoom callbacks.");
});
// Momentum is not used, it seems that it conflicts with Rotate and Zoom
}
private void Log(string format, params object[] args)
{
var entry = string.Format(format, args);
if (_logEntries.Count > 15)
_logEntries.RemoveRange(0, _logEntries.Count - 15);
_logEntries.Add(entry);
_log.Text = string.Join("<br>", _logEntries);
}
}
}
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