using System;
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using UIKit;
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using System.IO;
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using Foundation;
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using CoreGraphics;
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using Shared.IO;
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namespace Shared
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{
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/// <summary>
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/// 位置布局
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/// </summary>
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public class HorizontalSeekBar : View
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{
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MySlide currentRealView;
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/// <summary>
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/// 构造函数
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/// </summary>
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public HorizontalSeekBar()
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{
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currentRealView = new MySlide(this) { };
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uiView = currentRealView;
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}
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/// <summary>
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/// 进度变化事件
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/// </summary>
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public Action<View, int> ProgressChanged;
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int max = 100;
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/// <summary>
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/// 最大值
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/// </summary>
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/// <value>The max.</value>
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public int Max
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{
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get
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{
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return max;
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}
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set
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{
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max = value;
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if (!IsCanRefresh)
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{
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return;
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}
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currentRealView.MaxValue = value;
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}
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}
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bool isCanScrolled = true;
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/// <summary>
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/// 是否允许滑动滑块
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/// </summary>
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/// <value><c>true</c> if is can scrolled; otherwise, <c>false</c>.</value>
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public bool IsCanScrolled
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{
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get
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{
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return isCanScrolled;
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}
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set
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{
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isCanScrolled = value;
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if (!IsCanRefresh)
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{
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return;
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}
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currentRealView.UserInteractionEnabled = value;
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if (value)
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{
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//currentRealView.ThumbTintColor = UIColor.White;
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}
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else
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{
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//currentRealView.ThumbTintColor = UIColor.Clear;
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}
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}
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}
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//2019-08-29 改100毫秒
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public int DelayTime = 100;
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//防止跳动，延时显示状态
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DateTime delayDateTime = DateTime.MinValue;
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int progress;
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/// <summary>
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/// 当前进度
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/// </summary>
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/// <value>The progress.</value>
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public int Progress
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{
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get
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{
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return (int)currentRealView.Value;
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}
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set
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{
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progress = value;
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if (!IsCanRefresh)
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{
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return;
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}
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//发送命令后3000毫秒内不更新状态，防止跳动
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if ((DateTime.Now - delayDateTime).TotalMilliseconds < DelayTime)
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{
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return;
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}
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currentRealView.Value = value;
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}
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}
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public int SleepTime = 0;
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uint progressColor = 0xFFEB642C;
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/// <summary>
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/// 进度颜色
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/// </summary>
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/// <value>The color of the progress.</value>
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public uint ProgressColor
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{
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get
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{
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return progressColor;
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}
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set
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{
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progressColor = value;
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int r = (byte)(progressColor / 256 / 256 % 256);
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int g = (byte)(progressColor / 256 % 256);
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int b = (byte)(progressColor % 256);
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int a = (byte)(progressColor / 256 / 256 / 256 % 256);
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currentRealView.MinimumTrackTintColor = UIKit.UIColor.FromRGBA(r, g, b, a);
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}
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}
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uint backgroundColor = 0xFFFFFFFF;
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/// <summary>
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/// 底部颜色
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/// </summary>
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/// <value>The color of the background.</value>
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public new uint BackgroundColor
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{
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get
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{
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return backgroundColor;
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}
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set
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{
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backgroundColor = value;
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int r = (byte)(backgroundColor / 256 / 256 % 256);
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int g = (byte)(backgroundColor / 256 % 256);
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int b = (byte)(backgroundColor % 256);
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int a = (byte)(backgroundColor / 256 / 256 / 256 % 256);
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currentRealView.MaximumTrackTintColor = UIKit.UIColor.FromRGBA(r, g, b, a);
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}
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}
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uint thumbColor = 0xFFFFFFFF;
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/// <summary>
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/// 滑块颜色
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/// </summary>
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/// <value>The color of the background.</value>
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public uint ThumbColor
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{
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get
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{
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return thumbColor;
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}
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set
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{
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thumbColor = value;
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int r = (byte)(thumbColor / 256 / 256 % 256);
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int g = (byte)(thumbColor / 256 % 256);
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int b = (byte)(thumbColor % 256);
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int a = (byte)(thumbColor / 256 / 256 / 256 % 256);
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currentRealView.SetThumbImage(createImageWithColor(UIColor.FromRGBA(r, g, b, a)), UIControlState.Normal);
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}
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}
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/// <summary>
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/// 是否可以滑动
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/// </summary>
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public bool IsCanMove = true;
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public DateTime dateTime = DateTime.MinValue;
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internal override bool TouchEvent(EventActions eventAction, CGPoint point)
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{
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if (!IsCanMove)
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{
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return true;
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}
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delayDateTime = DateTime.Now;
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switch (eventAction)
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{
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case EventActions.Down:
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dateTime = DateTime.MinValue;
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setValue((float)point.X);
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break;
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case EventActions.Move:
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if (dateTime == DateTime.MinValue)
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{
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dateTime = DateTime.Now;
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}
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setValue((float)point.X);
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break;
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case EventActions.Up:
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dateTime = DateTime.MinValue;
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setValue((float)point.X);
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break;
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case EventActions.Cancel:
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dateTime = DateTime.MinValue;
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setValue((float)point.X);
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break;
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}
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return base.TouchEvent(eventAction, point);
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}
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float beforeValue = -1;
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void setValue(float x)
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{
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if (x < 0)
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{
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x = 0;
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}
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if (Width - ThumbRadius < x)
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{
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x = Width - ThumbRadius;
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}
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currentRealView.Value = (x / (Width - ThumbRadius) * max);
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if (beforeValue != currentRealView.Value)
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{
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//点击下或者弹起或者滑动时间500毫秒的时候，就触发事件
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if (ProgressChanged != null
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&& SleepTime < (DateTime.Now - dateTime).TotalMilliseconds)
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{
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beforeValue = currentRealView.Value;
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dateTime = DateTime.MinValue;
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delayDateTime = DateTime.Now;
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ProgressChanged(this, (int)currentRealView.Value);
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}
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}
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}
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int thumbRadius = 9;// 12;
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public int ThumbRadius
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{
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get
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{
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return thumbRadius;
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}
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set
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{
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thumbRadius = value;
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int r = (byte)(thumbColor / 256 / 256 % 256);
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int g = (byte)(thumbColor / 256 % 256);
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int b = (byte)(thumbColor % 256);
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int a = (byte)(thumbColor / 256 / 256 / 256 % 256);
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currentRealView.SetThumbImage(createImageWithColor(UIColor.FromRGBA(r, g, b, a)), UIControlState.Normal);
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}
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}
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/// <summary>
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/// 刷新当前视图
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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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Max = max;
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ProgressColor = progressColor;
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Progress = progress;
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IsCanScrolled = isCanScrolled;
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ThumbRadius = thumbRadius;
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}
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UIImage createImageWithColor(UIColor color)
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{
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//设置长宽
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CGRect rect = new CGRect(0.0f, 0.0f, ThumbRadius * 2, ThumbRadius * 2);
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UIGraphics.BeginImageContext(rect.Size);
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var context = UIGraphics.GetCurrentContext();
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context.SetFillColor(color.CGColor);
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context.FillRect(rect);
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UIImage resultImage = UIGraphics.GetImageFromCurrentImageContext();
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UIGraphics.EndImageContext();
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// 开始一个Image的上下文
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UIGraphics.BeginImageContextWithOptions(resultImage.Size, false, 0.0f);
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// 添加圆角
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UIBezierPath.FromRoundedRect(rect, ThumbRadius).AddClip();
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// 绘制图片
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resultImage.Draw(rect);
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// 接受绘制成功的图片
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resultImage = UIGraphics.GetImageFromCurrentImageContext();
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UIGraphics.EndImageContext();
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return resultImage;
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}
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class MySlide : UISlider
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{
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[Weak] View view;
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public MySlide(View view) {
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this.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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view?.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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view?.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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view?.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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view?.TouchEvent(EventActions.Cancel, (touches.AnyObject as UITouch).LocationInView(this));
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}
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}
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}
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}
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