20200608

wxr

2020-06-08 b71dfb3ca100340005d56e1298292807da82322d

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using System;
using Foundation;
using Shared.IO;
using UIKit;
 
namespace Shared
{
    /// <summary>
    /// ImageView 
    /// </summary>
    public class ImageView : View
    {
        MyImageView myImageView
        {
            get
            {
                return uiView as MyImageView;
            }
            set
            {
                uiView = value;
            }
        }
 
        /// <summary>
        /// Initializes a new instance of the <see cref="Shared.Button"/> class.
        /// </summary>
        public ImageView()
        {
            myImageView = new MyImageView(this) { };
            
        }
 
        internal string imagePath, tempImagePath;
        /// <summary>
        /// 非选中状态的背景图路径
        /// </summary>
        /// <value>The un selected image path.</value>
        public string ImagePath
        {
            get
            {
                return imagePath;
            }
            set
            {
                tempImagePath = value;
                if (!IsCanRefresh)
                {
                    return;
                }
                if (imageBytes != null)
                {
                    myImageView.SetBackgroundImage(UIImage.LoadFromData(NSData.FromArray(imageBytes)), UIControlState.Normal);
                    return;
                }
                if (ImagePath == value)
                {
                    return;
                }
                imagePath = value;
                myImageView.SetBackgroundImage(UIImage.FromFile(FileUtils.GetImageFilePath(imagePath)), UIControlState.Normal);
            }
        }
 
        byte[] imageBytes;
        public byte[] ImageBytes
        {
            get
            {
                return imageBytes;
            }
            set
            {
                imageBytes = value;
                ImagePath = tempImagePath;
            }
        }
 
 
        public override void Refresh()
        {
            base.Refresh();
 
            ImagePath = tempImagePath;
        }
    }
 
    class MyImageView : UIKit.UIButton
    {
        [Weak] View view;
        public MyImageView(View view)
        {
            this.view = view;
        }
        /// <summary>
        /// 点击开始
        /// </summary>
        /// <param name="touches">Touches.</param>
        /// <param name="evt">Evt.</param>
        public override void TouchesBegan(NSSet touches, UIEvent evt)
        {
            view?.TouchEvent(EventActions.Down, (touches.AnyObject as UITouch).LocationInView(this));
        }
        /// <summary>
        ///  移动
        /// </summary>
        /// <param name="touches">Touches.</param>
        /// <param name="evt">Evt.</param>
        public override void TouchesMoved(NSSet touches, UIEvent evt)
        {
            view?.TouchEvent(EventActions.Move, (touches.AnyObject as UITouch).LocationInView(this));
        }
 
        /// <summary>
        /// 点击弹起
        /// </summary>
        /// <param name="touches">Touches.</param>
        /// <param name="evt">Evt.</param>
        public override void TouchesEnded(NSSet touches, UIEvent evt)
        {
            view?.TouchEvent(EventActions.Up, (touches.AnyObject as UITouch).LocationInView(this));
        }
 
        public override void TouchesCancelled(NSSet touches, UIEvent evt)
        {
            view?.TouchEvent(EventActions.Cancel, (touches.AnyObject as UITouch).LocationInView(this));
        }
    }
}