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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/// 在滑动事件下，可显示隐藏些自定义视图
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/// </summary>
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public class RowLayout : ViewGroup
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{
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/// <summary>
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/// OpenMenuAction
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/// </summary>
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public Action OpenMenuAction;
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/// <summary>
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/// 右边的视图列表
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/// </summary>
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internal System.Collections.Generic.List<Button> leftView = new System.Collections.Generic.List<Button>();
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/// <summary>
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/// 右边的视图列表
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/// </summary>
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internal System.Collections.Generic.List<Button> rigthView = new System.Collections.Generic.List<Button>();
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/// <summary>
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/// 下面那边张
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/// </summary>
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UIView lineUIView = new UIView();
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/// <summary>
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/// 重新刷新控件
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/// </summary>
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public override void Refresh()
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{
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base.Refresh();
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LineColor = lineColor;
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}
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/// <summary>
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/// 控件宽度
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/// </summary>
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public override int Width
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{
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get
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{
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return base.Width;
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}
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set
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{
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base.Width = value;
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if (!IsCanRefresh)
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return;
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var frame4 = lineUIView.Frame;
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frame4.Width = base.Width;
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lineUIView.Frame = frame4;
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}
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}
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/// <summary>
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/// 子视图的宽度
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/// </summary>
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public int SubViewWidth = 70;
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/// <summary>
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/// 控件的高度
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/// </summary>
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/// <value>The height.</value>
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public override int Height
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{
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get
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{
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return base.Height;
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}
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set
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{
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base.Height = value;
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if (!IsCanRefresh)
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return;
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{
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var frame = realViewGroup.Frame;
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frame.Height = Height;
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realViewGroup.Frame = frame;
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}
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var frame4 = lineUIView.Frame;
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frame4.Y = base.Height - frame4.Height;
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lineUIView.Frame = frame4;
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}
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}
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uint lineColor = 0x80818181;
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/// <summary>
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/// 背景颜色
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/// </summary>
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/// <value>The color of the background.</value>
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public virtual uint LineColor
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{
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get
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{
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return lineColor;
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}
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set
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{
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lineColor = value;
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if (!IsCanRefresh)
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{
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return;
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}
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byte r, g, b, a;
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r = (byte)(lineColor / 256 / 256 % 256);
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g = (byte)(lineColor / 256 % 256);
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b = (byte)(lineColor % 256);
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a = (byte)(lineColor / 256 / 256 / 256 % 256);
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lineUIView.BackgroundColor = UIKit.UIColor.FromRGBA(r, g, b, a);
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}
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}
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/// <summary>
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/// 是否正打开
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/// </summary>
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//public bool IsOpening;
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public bool IsShowLeft;
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public bool IsShowRight;
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/// <summary>
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/// 关闭其他RowLayout 显示的View
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/// </summary>
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private void HideOtherRowLayout()
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{
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try
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{
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if (this.Parent != null)
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{
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foreach (View mView in Parent.viewList)
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{
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if (mView is RowLayout && mView != this)
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{
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if ((mView as RowLayout).IsShowRight || (mView as RowLayout).IsShowLeft)
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{
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(mView as RowLayout).HideMenu();
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}
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}
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}
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}
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}
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catch
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{
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}
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}
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/// <summary>
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/// 关闭显示的View
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/// </summary>
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public void HideMenu()
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{
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if (IsShowLeft)
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{
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HideLeftMenu();
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}
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if (IsShowRight)
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{
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HideRightMenu();
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}
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}
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public void OpenLeftMenu()
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{
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HideOtherRowLayout();
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if (IsShowRight)
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{
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HideRightMenu();
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return;
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}
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if (leftView.Count == 0)
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return;
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IsShowLeft = true;
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(viewGroup as UIScrollView).SetContentOffset(new CGPoint(leftView[0].RealView.Frame.X, 0), true);
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OpenMenuAction?.Invoke();
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}
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public void HideLeftMenu()
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{
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IsShowLeft = false;
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HideAllMenuView();
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}
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public void OpenRightMenu()
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{
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HideOtherRowLayout();
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if (IsShowLeft)
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{
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HideLeftMenu();
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return;
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}
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if (rigthView.Count == 0)
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return;
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IsShowRight = true;
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var rigthViewX = realViewGroup.Frame.X + GetAllRightViewWidth();
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(viewGroup as UIScrollView).SetContentOffset(new CGPoint(rigthViewX, 0), true);
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OpenMenuAction?.Invoke();
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}
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public void HideRightMenu()
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{
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IsShowRight = false;
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HideAllMenuView();
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}
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void RestMenuView() {
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if (IsShowRight)
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{
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OpenRightMenu();
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}
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else if (IsShowLeft)
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{
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OpenLeftMenu();
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}
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else {
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HideAllMenuView();
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}
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}
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void HideAllMenuView()
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{
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(viewGroup as UIScrollView).SetContentOffset(new CGPoint(realViewGroup.Frame.X, 0), true);
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}
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/// <summary>
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/// 是否使用同样的SubViewWidth宽
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/// </summary>
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bool isUseSameSubViewWidth = true;
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public bool IsUseSameSubViewWidth
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{
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get
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{
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return isUseSameSubViewWidth;
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}
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set
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{
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isUseSameSubViewWidth = value;
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}
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}
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/// <summary>
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/// 获取当前leftView的总宽
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/// </summary>
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/// <returns></returns>
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int GetAllLeftViewWidth() {
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int mWidth = 0;
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foreach (var mView in leftView)
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{
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mWidth += mView.Width;
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}
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return mWidth;
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}
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/// <summary>
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/// 获取当前rigthView的总宽
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/// </summary>
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/// <returns></returns>
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int GetAllRightViewWidth()
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{
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int mWidth = 0;
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foreach (var mView in rigthView)
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{
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mWidth += mView.Width;
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}
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return mWidth;
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}
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/// <summary>
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/// 增加左边视图
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/// </summary>
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/// <param name="view">View.</param>
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public void AddLeftView(Button view)
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{
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if (null == view)
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{
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return;
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}
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var mSubViewWidth = isUseSameSubViewWidth ? SubViewWidth : view.Width;
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view.X = GetAllLeftViewWidth();
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view.Y = 0;
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view.Width = mSubViewWidth;
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view.Height = Height;
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viewGroup.AddSubview(view.RealView);
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view.Parent = this;
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view.Refresh();
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leftView.Add(view);
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var frame = realViewGroup.Frame;
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frame.X += mSubViewWidth;
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realViewGroup.Frame = frame;
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foreach (var right in rigthView)
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{
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right.X += mSubViewWidth;
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}
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RefreshContentSize();
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}
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void RefreshContentSize() {
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var menuWidth = GetAllLeftViewWidth() + GetAllRightViewWidth();
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(viewGroup as UIScrollView).ContentSize = new CoreGraphics.CGSize(menuWidth + realViewGroup.Frame.Width, 0);
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(viewGroup as UIScrollView).SetContentOffset(new CGPoint(realViewGroup.Frame.X, 0), false);
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}
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internal override void removeChildParent()
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{
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foreach (var tempView in leftView)
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{
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tempView.Parent = null;
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}
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foreach (var tempView in rigthView)
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{
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tempView.Parent = null;
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}
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base.removeChildParent();
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}
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/// <summary>
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/// 增加右边视图
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/// </summary>
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/// <param name="view">View.</param>
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public void AddRightView(Button view)
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{
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if (null == view)
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{
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return;
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}
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var mSubViewWidth = isUseSameSubViewWidth ? SubViewWidth : view.Width;
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view.X =(int)realViewGroup.Frame.Right + GetAllRightViewWidth();
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view.Y = 0;
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view.Width = mSubViewWidth;
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view.Height = Height;
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viewGroup.AddSubview(view.RealView);
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view.Parent = this;
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view.Refresh();
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rigthView.Add(view);
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RefreshContentSize();
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}
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nfloat beforeXScrollX;
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nfloat moveX;
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/// <summary>
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/// 在滑动事件下，可显示隐藏些自定义视图
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/// </summary>
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public RowLayout()
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{
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viewGroup = new UIScrollView { Bounces = false };
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realViewGroup = new MyRowLayout(this) { };
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viewGroup.AddSubview(realViewGroup);
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viewGroup.Layer.MasksToBounds = true;
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lineUIView.BackgroundColor = new UIColor(0x81 / 255.0f, 0x81 / 255.0f, 0x81 / 255.0f, 0.8f);
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var lineUIViewFrame = lineUIView.Frame;
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lineUIViewFrame.Height = 1.0f;
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lineUIView.Frame = lineUIViewFrame;
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viewGroup.AddSubview(lineUIView);
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(viewGroup as UIScrollView).ShowsHorizontalScrollIndicator = false;//隐藏水平滚动条
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(viewGroup as UIScrollView).Scrolled += (s, e) =>
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{
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moveX = (viewGroup as UIScrollView).ContentOffset.X - beforeXScrollX;
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};
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(viewGroup as UIScrollView).DraggingStarted += (sender, e) =>
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{
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beforeXScrollX = (viewGroup as UIScrollView).ContentOffset.X;
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};
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(viewGroup as UIScrollView). DecelerationStarted += (s, e) =>
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{
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GetMovePageIndex();
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};
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(viewGroup as UIScrollView).DraggingEnded += (s, e) =>
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{
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if (!e.Decelerate)
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{
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GetMovePageIndex();
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}
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};
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}
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void GetMovePageIndex(){
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if (20 < Math.Abs(moveX))
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{
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if (moveX < 0)
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{
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OpenLeftMenu();
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}
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else if (moveX > 0)
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{
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OpenRightMenu();
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}
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}
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else
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{
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RestMenuView();
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}
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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 MyRowLayout : UIView
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{
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[Weak] internal RowLayout rowLayout;
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public MyRowLayout(RowLayout rowLayout)
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{
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this.rowLayout = rowLayout;
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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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rowLayout?.TouchEvent(EventActions.Down, (touches.AnyObject as UITouch).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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rowLayout?.TouchEvent(EventActions.Move, (touches.AnyObject as UITouch).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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rowLayout?.TouchEvent(EventActions.Up, (touches.AnyObject as UITouch).LocationInView(this));
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}
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public override void TouchesCancelled(NSSet touches, UIEvent evt)
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{
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rowLayout?.TouchEvent(EventActions.Cancel, (touches.AnyObject as UITouch).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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}
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