using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Controls;

namespace HistoryDLL
{
    /// <summary>
    /// 該歷史牆主要用於 n * 1 (n 最大為 3) 的螢幕
    /// 解析度為(1920 * 1080), (3840 * 1080), (5760 * 1080)
    /// 這部分將以上述解析度加上單位事件的寬度進行計算
    /// 得到各個常數項的值
    /// </summary>
    public partial class CyclicScroller : UserControl
    {
        private int MainEventHeight = 610;
        private int MainEventWidth = 460;
        private int YearEventHeight = 77;
        //螢幕解析度 (寬)
        private int ResolutionValueHeight = 0;
        private int ResolutionValueWidth = 0;
        //透過電視牆的寬度~及所設定的MainEventWidth, 取得該 scrollviewer 會有幾個 children
        private int ChildrenCount = 0;
        //除了 ChildrenCount 外在移動判斷上需再加上四, 以供在無限Scroll的時候判斷位置用
        private int TotalShowChildren = 0;
        //兩旁黑邊"沒出現"的範圍
        private int NoneUseRange = 0;
        private int FadeRate;

        private void SetSpecValue()
        {
            //設定 Scrollviewer 的高度~
            uxMyScroll.Height = MainEventHeight;

            ChildrenCount = GetChildrenCount();
            TotalShowChildren = ChildrenCount + 4;
            NoneUseRange = GetNoneUseRange();
            FadeRate = MainEventWidth / 2;
        }

        //兩旁黑邊"沒出現"的範圍
        private int GetNoneUseRange()
        {
            int result = 0;
            int buffer = 0;
            //一個螢幕的話可容納的個數
            if (CurrentMonitorCount.ncm == MonitorFlag.Monitor1_1)
            {
                //解析度1920 * 1080
                ResolutionValueWidth = 1920;
                ResolutionValueHeight = 1080;
            }
            else if (CurrentMonitorCount.ncm == MonitorFlag.Monitor2_1)
            {
                //解析度3840 * 1080
                ResolutionValueWidth = 3840;
                ResolutionValueHeight = 1080;
            }
            else if (CurrentMonitorCount.ncm == MonitorFlag.Monitor3_1)
            {
                //解析度5760 * 1080
                ResolutionValueWidth = 5760;
                ResolutionValueHeight = 1080;
            }
            else if (CurrentMonitorCount.ncm == MonitorFlag.Monitor4_1)
            {
                //解析度7680 * 1080
                ResolutionValueWidth = 7680;
                ResolutionValueHeight = 1080;
            }
            else if (CurrentMonitorCount.ncm == MonitorFlag.Monitor5_1)
            {
                //解析度9600 * 1080
                ResolutionValueWidth = 9600;
                ResolutionValueHeight = 1080;
            }
            else if (CurrentMonitorCount.ncm == MonitorFlag.Monitor6_1)
            {
                //解析度11520 * 1080
                ResolutionValueWidth = 11520;
                ResolutionValueHeight = 1080;
            }

            if (GlobalFunction.isSolutionUsing4K)
            {
                ResolutionValueHeight *= 2;
            }

            buffer = (ResolutionValueWidth - MainEventWidth) / MainEventWidth;
            result = MainEventWidth - (ResolutionValueWidth - (MainEventWidth * buffer)) / 2;


            return result;
        }

        /// <summary>
        /// 透過電視牆的寬度~及所設定的MainEventWidth, 取得該 scrollviewer 會有幾個 children
        /// </summary>
        /// <returns></returns>
        private int GetChildrenCount()
        {
            int result = 0;
            //一個螢幕的話可容納的個數
            if (CurrentMonitorCount.ncm == MonitorFlag.Monitor1_1)
            {
                //解析度1920 * 1080
                result = 1920 / MainEventWidth + 1;
            }
            else if (CurrentMonitorCount.ncm == MonitorFlag.Monitor2_1)
            {
                //解析度3840 * 1080
                result = 3840 / MainEventWidth + 1;
            }
            else if (CurrentMonitorCount.ncm == MonitorFlag.Monitor3_1)
            {
                //解析度5760 * 1080
                result = 5760 / MainEventWidth + 1;
            }
            else if (CurrentMonitorCount.ncm == MonitorFlag.Monitor4_1)
            {
                //解析度7680 * 1080
                result = 7680 / MainEventWidth + 1;
            }
            else if (CurrentMonitorCount.ncm == MonitorFlag.Monitor5_1)
            {
                //解析度9600 * 1080
                result = 9600 / MainEventWidth + 1;
            }
            else if (CurrentMonitorCount.ncm == MonitorFlag.Monitor6_1)
            {
                //解析度11520 * 1080
                result = 11520 / MainEventWidth + 1;
            }
            return result;
        }
    }
}
