using System;
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using Android.Content;
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using Android.Views;
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using Android.Support.V4.View;
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using Android.Widget;
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using Android.Support.V4.Widget;
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namespace Shared
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{
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/// <summary>
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/// 右滑抽屉View
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/// </summary>
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public class UIDrawerLayout : ViewGroup
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{
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AndroidDrawerLayout androidDrawerLayout;
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/// <summary>
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/// 宽度设置或读取
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/// </summary>
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/// <value>The width.</value>
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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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{
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return;
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}
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var layoutParameters = androidDrawerLayout.LayoutParameters;
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layoutParameters.Width = Width;
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androidDrawerLayout.LayoutParameters = layoutParameters;
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}
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}
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/// <summary>
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/// 视图高度
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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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{
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return;
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}
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var layoutParameters = androidDrawerLayout.LayoutParameters;
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layoutParameters.Height = Height;
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androidDrawerLayout.LayoutParameters = layoutParameters;
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}
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}
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LinearLayout leftLinarLayout;
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Android.Widget.FrameLayout mainLinarLayout;
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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 UIDrawerLayout()
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{
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//viewGroup = new Android.Widget.FrameLayout(Application.Activity);
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androidDrawerLayout = new AndroidDrawerLayout(Application.Activity, this) { };
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viewGroup = androidDrawerLayout;
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leftLinarLayout = new LinearLayout(Application.Activity) { Alpha = 1.0f };
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mainLinarLayout = new Android.Widget.FrameLayout(Application.Activity) { Alpha = 1.0f };
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//viewGroup.AddView(androidDrawerLayout, new DrawerLayout.LayoutParams(DrawerLayout.LayoutParams.MatchParent, DrawerLayout.LayoutParams.MatchParent));
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realViewGroup = mainLinarLayout;
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DrawerLayout.LayoutParams lp = new DrawerLayout.LayoutParams(DrawerLayout.LayoutParams.MatchParent, DrawerLayout.LayoutParams.MatchParent);
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androidDrawerLayout.AddView(mainLinarLayout, lp);
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DrawerLayout.LayoutParams lp2 = new DrawerLayout.LayoutParams(Application.CurrentWidth, DrawerLayout.LayoutParams.MatchParent);
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lp2.Gravity = GravityCompat.Start;
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androidDrawerLayout.AddView(leftLinarLayout, lp2);
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}
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/// <summary>
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/// 是否锁定右滑功能， 锁定后右滑弹出菜单失效
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/// </summary>
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bool _IsDrawerLockMode;
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public bool IsDrawerLockMode
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{
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get
{
return _IsDrawerLockMode;
}
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set
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{
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_IsDrawerLockMode = value;
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if (_IsDrawerLockMode)
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{
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androidDrawerLayout.SetDrawerLockMode(DrawerLayout.LockModeLockedClosed);
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}
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else
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{
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androidDrawerLayout.SetDrawerLockMode(DrawerLayout.LockModeUnlocked);
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}
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}
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}
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/// <summary>
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/// 打开抽屉view
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/// </summary>
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public void OpenLeftMenu()
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{
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if (!androidDrawerLayout.IsDrawerOpen(GravityCompat.Start))
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{
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androidDrawerLayout.OpenDrawer(GravityCompat.Start);
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}
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//Shared.HDLUtils.WriteLine("DrawerLayout:OpenLeftMenu");
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}
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/// <summary>
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/// 关闭抽屉view
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/// </summary>
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public void CloseLeftMenu()
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{
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if (androidDrawerLayout.IsDrawerOpen(GravityCompat.Start))
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{
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androidDrawerLayout.CloseDrawer(GravityCompat.Start);
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}
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//Shared.HDLUtils.WriteLine("DrawerLayout:CloseLeftMenu");
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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(View view)
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{
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view.Parent = this;
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if (view.AndroidView.Parent != null)
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{
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(view.AndroidView.Parent as Android.Views.ViewGroup)?.RemoveView(view.AndroidView);
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}
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leftLinarLayout.AddView(view.AndroidView, new Android.Views.ViewGroup.LayoutParams(leftLinarLayout.LayoutParameters.Width, leftLinarLayout.LayoutParameters.Height));
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//view.Width = leftLinarLayout.LayoutParameters.Width;
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//view.Height = leftLinarLayout.LayoutParameters.Height;
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//view.Refresh();
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}
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/// <summary>
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/// RemoveLeftView
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/// </summary>
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public void LeftViewRemoveAllViews()
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{
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if (leftLinarLayout == null) return;
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leftLinarLayout.RemoveAllViews();
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}
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class AndroidDrawerLayout : DrawerLayout
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{
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View _view;
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int mTouchSlop
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{
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get
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{
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var configuration = ViewConfiguration.Get(Context);
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//最小的滑动距离
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return configuration.ScaledTouchSlop;
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}
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}
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public AndroidDrawerLayout(Context context, View view)
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: base(context)
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{
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_view = view;
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}
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//float mLastX, mLastY;
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////internal bool isShowLeft;
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////internal bool isShowRight;
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//public Action RightToLeftAction;
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//public Action LeftToRightAction;
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//bool isActioned;
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//bool action(MotionEvent e)
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//{
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// switch (e.Action)
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// {
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// case MotionEventActions.Down:
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// //记录点击的最新X坐标
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// mLastX = e.RawX;
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// mLastY = e.RawY;
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// Parent?.RequestDisallowInterceptTouchEvent(true);
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// break;
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// case MotionEventActions.Move:
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// var x = e.RawX;
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// var y = e.RawY;
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// var deltaX = x - mLastX;
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// var deltaY = y - mLastY;
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// if (Math.Abs(deltaY) < Math.Abs(deltaX))
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// {
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// if (!isActioned)
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// {
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// //RightToLeftAction
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// if (deltaX < -mTouchSlop)
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// {
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// if (x / this.Width >= 0.5)
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// {
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// isActioned = true;
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// //parentDelay(true);
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// Shared.HDLUtils.WriteLine("DrawerLayout:DispatchTouchEvent:RightToLeft");
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// RightToLeftAction?.Invoke();
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// }
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// }
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// //LeftToRightAction
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// if (mTouchSlop < deltaX)
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// {
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// if (x / this.Width <= 0.5)
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// {
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// isActioned = true;
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// //parentDelay(true);
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// Shared.HDLUtils.WriteLine("DrawerLayout:DispatchTouchEvent:LeftToRight");
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// LeftToRightAction?.Invoke();
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// }
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// }
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// }
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// return true;
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// }
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// else
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// {
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// //上下滑动时，允许父控件的拦截
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// if (4 < Math.Abs(deltaY))
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// {
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// Parent?.RequestDisallowInterceptTouchEvent(false);
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// }
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// }
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// break;
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// }
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// return false;
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//}
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///// <summary>
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///// 执行OnInterceptTouchEvent和OnTouchEvent
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///// </summary>
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///// <returns><c>true</c>事件已经处理<c>false</c>事件没有处理</returns>
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///// <param name="e">E.</param>
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//public override bool DispatchTouchEvent(MotionEvent e)
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//{
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// //Shared.HDLUtils.WriteLine($"{GetType()} Height->{Height} Width->{Width} DispatchTouchEvent->{e.Action}");
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// if (e.Action == MotionEventActions.Down)
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// {
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// isActioned = false;
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// //还原允许拦截事件
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// RequestDisallowInterceptTouchEvent(false);
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// }
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// return base.DispatchTouchEvent(e);
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//}
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//public override bool OnInterceptTouchEvent(MotionEvent e)
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//{
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// //Shared.HDLUtils.WriteLine($"{GetType()} Height->{Height} Width->{Width} OnInterceptTouchEvent->{e.Action}");
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// if (disallowIntercept)
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// {
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// return false;
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// }
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// if (action(e))
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// {
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// return true;
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// }
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// return base.OnInterceptTouchEvent(e);
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//}
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///// <summary>
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///// 重写点击事件
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///// </summary>
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///// <returns><c>true</c>, if touch event was oned, <c>false</c> otherwise.</returns>
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///// <param name="e">E.</param>
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//public override bool OnTouchEvent(MotionEvent e)
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//{
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// //Shared.HDLUtils.WriteLine($"{GetType()} Height->{Height} Width->{Width} OnTouchEvent->{e.Action}");
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// if (!isActioned)
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// {
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// _view.TouchEvent(e);
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// }
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// action(e);
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// return true;
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//}
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//bool disallowIntercept;
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//public override void RequestDisallowInterceptTouchEvent(bool disallowIntercept)
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//{
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// this.disallowIntercept = disallowIntercept;
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// //Shared.HDLUtils.WriteLine($"{GetType()} Height->{Height} RequestDisallowInterceptTouchEvent->{disallowIntercept}");
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// base.RequestDisallowInterceptTouchEvent(disallowIntercept);
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// Parent?.RequestDisallowInterceptTouchEvent(disallowIntercept);
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//}
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}
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}
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}
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