/*

* Copyright (C) 2012 Interactive Lab

*

* Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation * files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, * modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the * Software is furnished to do so, subject to the following conditions:

* The above copyright notice and this permission notice shall be included in all copies or substantial portions of the * Software.

* * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE * WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR * COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

*/

using System;

using System.Collections.Generic;

using TouchScript.Events;

using UnityEngine;

namespace TouchScript.Debugging {

/// <summary>

/// Visual debugger to show touches as GUI elements.

/// </summary>

public class TouchDebugger : MonoBehaviour

{

#region Unity fields

/// <summary>

/// Texture to use

/// </summary>

public Texture2D TouchTexture;

/// <summary>

/// Font color for touch ids

/// </summary>

public Color FontColor;

#endregion

#region Private variables

private readonly Dictionary<int, TouchPoint> dummies = new Dictionary<int, TouchPoint>();

private GUIStyle style;

#endregion

#region Unity

private void Start() {

if (camera == null) throw new Exception("A camera is required.");

if (TouchManager.Instance == null) throw new Exception("A TouchManager is required.");

TouchManager.Instance.TouchPointsAdded += OnTouchPointsAdded;

TouchManager.Instance.TouchPointsRemoved += OnTouchPointsRemoved;

TouchManager.Instance.TouchPointsUpdated += OnTouchPointsUpdated;

TouchManager.Instance.TouchPointsCancelled += OnTouchPointsCancelled;

}

private void Update() {

camera.orthographicSize = Screen.height * .5f;

}

private void OnGUI() {

if (TouchTexture == null) return;

GUI.color = FontColor;

foreach (KeyValuePair<int, TouchPoint> dummy in dummies)

{

var x = dummy.Value.Position.x;

var y = Screen.height - dummy.Value.Position.y;

GUI.DrawTexture(new Rect(x - TouchTexture.width / 2, y - TouchTexture.height / 2, TouchTexture.width, TouchTexture.height), TouchTexture, ScaleMode.ScaleToFit);

GUI.Label(new Rect(x + TouchTexture.width, y - 9, 60, 25), dummy.Value.Id.ToString());

}

}

private void OnDestroy() {

TouchManager.Instance.TouchPointsAdded -= OnTouchPointsAdded;

TouchManager.Instance.TouchPointsRemoved -= OnTouchPointsRemoved;

TouchManager.Instance.TouchPointsUpdated -= OnTouchPointsUpdated;

TouchManager.Instance.TouchPointsCancelled -= OnTouchPointsCancelled;

}

#endregion

#region Private functions

private void updateDummy(TouchPoint dummy)

{

dummies[dummy.Id] = dummy;

}

#endregion

#region Event handlers

private void OnTouchPointsAdded(object sender, TouchEventArgs e) {

if (!enabled) return;

foreach (var touchPoint in e.TouchPoints) {

dummies.Add(touchPoint.Id, touchPoint);

}

}

private void OnTouchPointsUpdated(object sender, TouchEventArgs e) {

if (!enabled) return;

foreach (var touchPoint in e.TouchPoints) {

TouchPoint dummy;

if (!dummies.TryGetValue(touchPoint.Id, out dummy)) return;

updateDummy(touchPoint);

}

}

private void OnTouchPointsRemoved(object sender, TouchEventArgs e) {

if (!enabled) return;

foreach (var touchPoint in e.TouchPoints) {

TouchPoint dummy;

if (!dummies.TryGetValue(touchPoint.Id, out dummy)) return;

dummies.Remove(touchPoint.Id);

}

}

private void OnTouchPointsCancelled(object sender, TouchEventArgs e) {

OnTouchPointsRemoved(sender, e);

}

#endregion

}

}