using System;
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using UIKit;
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using CoreGraphics;
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using Shared.IO;
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using Foundation;
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namespace Shared
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{
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/// <summary>
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/// 位置布局，已经全面检查
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/// </summary>
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public class VerticalScrolViewLayout : ViewGroup
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{
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/// <summary>
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/// 构造函数
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/// </summary>
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public VerticalScrolViewLayout()
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{
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viewGroup = new MyUIScrolView(this);
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realViewGroup = viewGroup;
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(viewGroup as MyUIScrolView).Scrolled += (sender, e) =>
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{
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if (ScrolledEventHandler != null)
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{
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ScrolledEventHandler(this, new MouseEventArgs { X = (float)(sender as MyUIScrolView).ContentOffset.X, Y = (float)(sender as MyUIScrolView).ContentOffset.Y });
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}
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};
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}
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/// <summary>
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/// 增加控件
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/// </summary>
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/// <param name="view">子控件</param>
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public override void AddChidren(View view)
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{
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base.AddChidren(view);
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ReLocation();
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}
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/// <summary>
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/// 重新排位置及设备内容大小
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/// </summary>
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public virtual void ReLocation()
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{
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if (0 == viewList.Count)
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{
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return;
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}
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var frame1 = viewList[0].RealView.Frame;
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frame1.Y = 0;
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viewList[0].RealView.Frame = frame1;
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for (int i = 1; i < viewList.Count; i++)
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{
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var frame = viewList[i].RealView.Frame;
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frame.Y = viewList[i - 1].RealView.Frame.Bottom;
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viewList[i].RealView.Frame = frame;
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}
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(realViewGroup as MyUIScrolView).ContentSize = new CoreGraphics.CGSize(0, viewList[viewList.Count - 1].Bottom <= Height ? Height + 1 : viewList[viewList.Count - 1].Bottom);
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}
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/// <summary>
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/// 移除所有的视图
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/// </summary>
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public override void RemoveAll()
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{
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base.RemoveAll();
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ReLocation();
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}
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/// <summary>
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/// 移除当前视图
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/// </summary>
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/// <param name="view">当前视图</param>
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public override void Remove(View view)
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{
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base.Remove(view);
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ReLocation();
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}
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/// <summary>
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/// 移除指定索引
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/// </summary>
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/// <param name="index">索引</param>
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public override void RemoveAt(int index)
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{
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base.RemoveAt(index);
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ReLocation();
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}
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/// <summary>
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/// 是否允许滑动
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/// </summary>
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/// <value><c>true</c> if scroll enabled; otherwise, <c>false</c>.</value>
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public bool ScrollEnabled
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{
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get
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{
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return (viewGroup as MyUIScrolView).ScrollEnabled;
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}
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set
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{
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(viewGroup as MyUIScrolView).ScrollEnabled = value;
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}
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}
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/// <summary>
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/// 是否正在滑动
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/// </summary>
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/// <value><c>true</c> if decelerating; otherwise, <c>false</c>.</value>
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public bool Decelerating
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{
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get
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{
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return (viewGroup as MyUIScrolView).Decelerating;
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}
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}
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/// <summary>
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/// 滑动事件
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/// </summary>
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public event EventHandler<MouseEventArgs> ScrolledEventHandler;
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}
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/// <summary>
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/// 垂直方向滚动视图
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/// </summary>
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class MyUIScrolView : UIScrollView
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{
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View _view;
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/// <summary>
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/// 构造函数
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/// </summary>
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/// <param name="view">对外的实际视图</param>
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public MyUIScrolView(View view)
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{
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_view = view;
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}
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/// <summary>
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/// 点击开始
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/// </summary>
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/// <param name="touches">Touches.</param>
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/// <param name="evt">Evt.</param>
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public override void TouchesBegan(NSSet touches, UIEvent evt)
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{
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//base.TouchesBegan(touches, evt);
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if (_view == null)
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return;
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var touch = touches.AnyObject as UITouch;
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_view.TouchEvent(EventActions.Down, touch.LocationInView(this));
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}
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/// <summary>
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/// 移动
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/// </summary>
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/// <param name="touches">Touches.</param>
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/// <param name="evt">Evt.</param>
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public override void TouchesMoved(NSSet touches, UIEvent evt)
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{
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//base.TouchesMoved(touches, evt);
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if (_view == null)
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return;
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var touch = touches.AnyObject as UITouch;
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_view.TouchEvent(EventActions.Move, touch.LocationInView(this));
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}
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/// <summary>
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/// 点击弹起
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/// </summary>
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/// <param name="touches">Touches.</param>
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/// <param name="evt">Evt.</param>
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public override void TouchesEnded(NSSet touches, UIEvent evt)
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{
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//base.TouchesEnded(touches, evt);
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if (_view == null)
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return;
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var touch = touches.AnyObject as UITouch;
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_view.TouchEvent(EventActions.Up, touch.LocationInView(this));
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}
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/// <summary>
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/// 框架默认加了两个UIImageView ，这样可以去掉默认添加
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/// </summary>
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/// <param name="view">View.</param>
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public override void AddSubview(UIView view)
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{
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if (view.GetType() == typeof(UIImageView) && view.Tag != int.MinValue)
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{
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return;
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}
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base.AddSubview(view);
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}
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}
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}
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