Sunji-posv-net/pos/POSV.Template/Component/SpecControl.cs

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Drawing;
using System.Data;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using DevComponents.DotNetBar.Metro;
using DevComponents.DotNetBar;
using POSV.Entity;
using POSV.Utils;
using POSV.Bean;
using POSV.MessageEvent;

namespace POSV.Template.Component
{
    [ToolboxItem(true)]
    public partial class SpecControl : BaseUserControl
    {
        /// <summary>
        /// 数据源
        /// </summary>
        private List<ProductSpec> _dataSource = null;

        public SpecControl()
        {
            InitializeComponent();

            this.BackColor = Color.Transparent;

            //订购界面变更通知事件
            MsgEvent.RemoveListener(Constant.SPEC_CHANGED_NOTIFY, this.SpecChangedEventNotify);
            MsgEvent.Receive(Constant.SPEC_CHANGED_NOTIFY, this.SpecChangedEventNotify);
        }


        protected override void OnLoad(EventArgs e)
        {
            base.OnLoad(e);

            if (this.DesignMode) return;

            var productJsonTemplate = Global.Instance.GlobalConfigStringValue(ConfigConstant.SPEC_JSON_TEMPLATE);
            if (string.IsNullOrEmpty(productJsonTemplate))
            {
                productJsonTemplate = JsonUtils.Serialize(new ProductSpecItem());
            }

            this.RefreshUi(JsonUtils.Deserialize<ProductSpecItem>(productJsonTemplate));

            //当前页码
            this.PageNumber = 1;
        }

        protected void SpecChangedEventNotify(object sender, MsgEventArgs args)
        {
            if (args.Data is ProductSpecItem)
            {
                var data = args.Data as ProductSpecItem;

                Global.Instance.ReloadConfig(ConfigConstant.SPECMAKE_GROUP);

                this.RefreshUi(data);

                this.BindDataSource(this._dataSource);
            }
        }

        public void RefreshUi(ProductSpecItem item)
        {

            this.FontSize = item.SpecFont;

            this.ItemHeight = item.ItemHeight;
            this.ItemWidth = item.ItemWidth;

            this.Cols = item.Cols;

            this.BackColor1 = item.BackColor1;
            this.BackColor2 = item.BackColor2;
            this.TextColor = item.TxtColor;

            UpdateTemplate();
        }

        private void UpdateTemplate()
        {

        }

        private MetroTileItem GetItemTemplate()
        {
            MetroTileItem template = new MetroTileItem();

            template.TileStyle.PaddingLeft = template.TileStyle.PaddingRight = -2;

            template.EnableMarkup = true;
            template.OptionGroup = "Spec";

            template.TileStyle.Font = this.itemPanel1.Font;

            this.itemPanel1.ResizeItemsToFit = false;
            this.itemPanel1.BackgroundStyle.Class = "MetroTileGroupTitle";//很关键

            template.TileStyle.TextAlignment = DevComponents.DotNetBar.eStyleTextAlignment.Center;
            template.TileStyle.TextLineAlignment = DevComponents.DotNetBar.eStyleTextAlignment.Far;

            if (this.ShowPrice)
            {
                template.TitleTextAlignment = System.Drawing.ContentAlignment.TopCenter;
            }
            template.TileStyle.TextColor = ColorTranslator.FromHtml(this.TextColor);
            template.TitleTextColor = ColorTranslator.FromHtml(this.TextColor);

            template.TileStyle.BackColor = ColorTranslator.FromHtml(this.BackColor1);
            template.TileStyle.BackColor2 = ColorTranslator.FromHtml(this.BackColor2);
            template.TileStyle.BorderColor = ColorTranslator.FromHtml(this.BackColor1);
            template.TileStyle.BorderColor2 = ColorTranslator.FromHtml(this.BackColor2);
            template.TileStyle.BorderWidth = 1;

            //显示大小
            template.TileSize = new Size(this.ItemWidth, this.Height);

            //圆角
            template.TileStyle.CornerType = eCornerType.Rounded;

            template.MouseDown += OnItemMouseDown;


            return template;
        }

        private void OnItemMouseDown(object sender, MouseEventArgs e)
        {
            if (e.Button == MouseButtons.Left)
            {
                MetroTileItem item = (MetroTileItem)sender;

                var productSpec = item.Tag as ProductSpec;

                this.OnProductSpecCheckedChanged(new ProductSpecEventArgs(productSpec));
            }
        }


        public event ProductSpecEventHandler ProductSpecCheckedChanged;
        protected virtual void OnProductSpecCheckedChanged(ProductSpecEventArgs e)
        {
            ProductSpecCheckedChanged?.Invoke(this, e);
        }

        public void BindDataSource(List<ProductSpec> dataSource)
        {
            this._dataSource = dataSource;

            if (this._dataSource == null)
            {
                this._dataSource = new List<ProductSpec>();
            }

            if(this._dataSource.Count == 1)
            {
                //清空历史数据
                this.itemPanel1.Items.Clear();
                this.itemPanel1.Invalidate();
                return;
            }

            //总数量
            this.TotalCount = dataSource.Count;

            //每页的显示数量
            if(this.Width == 0)
            {
                this.PageSize = this.Cols;
            }
            else
            {
                this.PageSize = this.Width / this.ItemWidth;
            }

            //清空历史数据
            this.itemPanel1.Items.Clear();

            this.itemPanel1.Font = this.GetSystemFont(this._fontSize);

            var pager = ListPager(dataSource);

            ItemContainer ic = new ItemContainer();

            ic.MultiLine = true;
            ic.ItemSpacing = 0;
            ic.LayoutOrientation = eOrientation.Horizontal;

            foreach (ProductSpec entity in pager)
            {
                MetroTileItem item = this.GetItemTemplate();
                item.Checked = false;

                //绑定品类ID到Tag属性
                item.Tag = entity;

                item.TitleText = entity.Name;
                if (this.ShowPrice)
                {
                    if (entity.Price != 0)
                    {
                        item.Text = StringUtils.FormatDataNoDigit(entity.Price);
                    }
                }
                ic.SubItems.Add(item);
            }

            this.itemPanel1.Items.Add(ic);
            this.itemPanel1.Invalidate();

        }

        /// <summary>
        /// 分页List数据
        /// </summary>
        /// <param name="data"></param>
        /// <returns></returns>
        public List<ProductSpec> ListPager(List<ProductSpec> data)
        {
            var result = new List<ProductSpec>();

            result.AddRange(data.Skip((this.PageNumber - 1) * this.PageSize).Take(this.PageSize));

            return result;
        }

        private int _itemHeight = 70;
        /// <summary>
        ///品类显示的高度
        /// </summary>
        public int ItemHeight
        {
            get { return _itemHeight; }
            set
            {
                _itemHeight = (value <= 0 ? 70 : value);
            }
        }

        private int _itemWidth = 70;
        /// <summary>
        ///规格显示的宽度
        /// </summary>
        public int ItemWidth
        {
            get
            {
                if(_itemWidth == 0)
                {
                    return this.Width / this.Cols;
                }
                return _itemWidth;
            }
            set
            {
                _itemWidth = (value < 0 ? 70 : value);
            }
        }

        private SystemFont _fontSize = SystemFont.默认;
        /// <summary>
        /// 字体大小
        /// </summary>
        public SystemFont FontSize
        {
            get { return this._fontSize; }
            set { this._fontSize = value; }
        }

        private string _backColor1 = ColorTranslator.ToHtml(Color.DimGray);
        /// <summary>
        /// 品类显示颜色
        /// </summary>
        public string BackColor1
        {
            get { return this._backColor1; }
            set { this._backColor1 = value; }
        }


        private string _backColor2 = ColorTranslator.ToHtml(Color.DimGray);
        /// <summary>
        /// 品类显示颜色
        /// </summary>
        public string BackColor2
        {
            get { return this._backColor2; }
            set { this._backColor2 = value; }
        }

        private string _textColor = ColorTranslator.ToHtml(Color.White);
        /// <summary>
        /// 品类显示颜色
        /// </summary>
        public string TextColor
        {
            get { return this._textColor; }
            set { this._textColor = value; }
        }

        /// <summary>
        /// 每页的大小
        /// </summary>
        public int PageSize { get; private set; }

        /// <summary>
        /// 总页数
        /// </summary>
        public int PageCount => this.PageSize <= 0 ? 0 : ((this.TotalCount + this.PageSize - 1) / this.PageSize);

        /// <summary>
        /// 当前页码
        /// </summary>
        public int PageNumber { get; set; }

        /// <summary>
        /// 总数量
        /// </summary>
        public int TotalCount { get; private set; }

        /// <summary>
        ///规格默认列数
        /// </summary>
        public int Cols { get; private set; }


        //是否有上一页
        public bool HasPreviousPage
        {
            get { return PageNumber > 1; }
        }

        //是否有下一页
        public bool HasNextPage
        {
            get { return PageNumber < this.PageCount; }
        }

        /// <summary>
        /// 显示零售价
        /// </summary>
        private bool _showPrice = true;
        public bool ShowPrice
        {
            get
            {
                return _showPrice;
            }
            set
            {
                _showPrice = value;
            }
        }
    }

    public delegate void ProductSpecEventHandler(object sender, ProductSpecEventArgs e);

    public class ProductSpecEventArgs : EventArgs
    {
        public ProductSpec ProductSpec;
        public ProductSpecEventArgs(ProductSpec data)
        {
            this.ProductSpec = data;
        }
    }
}