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using System;
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using System.Collections.Generic;
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using System.ComponentModel;
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using System.Drawing;
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using System.Data;
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using System.Linq;
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using System.Text;
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using System.Windows.Forms;
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using POSV.Entity;
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using System.Diagnostics;
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using POSV.Utils;
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using DevComponents.DotNetBar.Metro;
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using DevComponents.DotNetBar;
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namespace POSV.Component
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{
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[ToolboxItem(true)]
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public partial class ProductXControl : BaseUserControl
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{
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/// <summary>
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/// 商品控件默认宽度
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/// </summary>
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public const int PRODUCT_DEFAULT_WIDTH = 104;
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/// <summary>
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/// 商品控件默认高度
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/// </summary>
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public const int PRODUCT_DEFAULT_HEIGHT = 76;
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/// <summary>
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/// 数据源
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/// </summary>
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private List<ProductExt> _dataSource = null;
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/// <summary>
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/// 显示价格类型
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/// </summary>
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private PriceTypeEnum _priceType = PriceTypeEnum.零售价;
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//这样可以加快多次创建item速度，否则每次要耗时2毫秒
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private Image _defaultImage = global::POSV.Properties.Resources.圆角矩形_2x;
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public ProductXControl()
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{
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InitializeComponent();
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this.itemPanel.ResizeItemsToFit = false;
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this.itemPanel.BackgroundStyle.Class = "MetroTileGroupTitle";//很关键
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}
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protected override void OnLoad(EventArgs e)
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{
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base.OnLoad(e);
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if (this.DesignMode) return;
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ReCalSize();
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this.Resize += OnResize;
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}
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private void OnResize(object sender, EventArgs e)
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{
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switch (this.FindForm().WindowState)
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{
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case FormWindowState.Normal:
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case FormWindowState.Maximized:
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{
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ReCalSize();
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}
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break;
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}
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}
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private void ReCalSize()
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{
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//计算能显示的列数
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var _width = this.ItemWidth + this.ItemSpace - 1;
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if (_width != 0)
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{
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this.Columns = ((this.Width - this.Padding.Left - this.Padding.Right) / _width);
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}
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//根据行数，重新规划高度
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var _height = this.ItemHeight + this.ItemSpace - 1;
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if (_height != 0)
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{
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this.Rows = ((this.Height - this.Padding.Top - this.Padding.Bottom) / _height);
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}
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this.ItemHeight = (this.Height - this.Padding.Top - this.Padding.Bottom) / this.Rows - this.ItemSpace;
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BindDataSource(this._dataSource, this._priceType);
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}
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public void BindDataSource(List<ProductExt> dataSource, PriceTypeEnum priceType)
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{
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try
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{
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if (dataSource == null)
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{
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this._dataSource = new List<ProductExt>();
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}
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//加入分页，避免污染源数据，新建集合
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List<ProductExt> list = new List<ProductExt>();
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list.AddRange(dataSource);
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this._dataSource = list;
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this._priceType = priceType;
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//可以考虑更优化的分摊机制？张莹
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int deltaX = this.Width - this.Padding.Left - this.Padding.Right - (this.ItemWidth + this.ItemSpace) * this.Columns - this.ItemSpace;
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int deltaY = this.Height - this.Padding.Top - this.Padding.Bottom - (this.ItemHeight + this.ItemSpace) * this.Rows - this.ItemSpace;
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this.TotalCount = this._dataSource.Count;
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this.PageSize = this.Columns * this.Rows;
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//清空历史数据
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this.itemPanel.Items.Clear();
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//复制新的数据源，进行分页运算
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var merge = ProductXMerge.Merge(this.Rows, this.Columns, this._dataSource, false);
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var pager = ListPager(merge);
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ItemContainer mainContainer = new ItemContainer();
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mainContainer.Name = "productContainer";
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mainContainer.MultiLine = (this.Rows > 1);
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mainContainer.ItemSpacing = this.ItemSpace;
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mainContainer.LayoutOrientation = eOrientation.Horizontal;
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for (int i=0;i < pager.Count;i++)
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{
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ProductExt entity = pager[i];
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MetroTileItem item = new MetroTileItem();
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item.TileStyle.PaddingLeft = item.TileStyle.PaddingRight = 0;
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item.EnableMarkup = true;
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item.OptionGroup = "product";
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item.TileStyle.BorderWidth = 0;
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item.TileStyle.BackColor = Color.Transparent;
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item.TileStyle.BackColor2 = Color.Transparent;
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item.TileStyle.BorderColor = Color.Transparent;
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item.TileStyle.BorderColor2 = Color.Transparent;
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//判断商品背景
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item.TileStyle.BackgroundImage = _defaultImage;
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item.TileStyle.BackgroundImagePosition = eStyleBackgroundImage.Stretch;
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item.TitleTextAlignment = ContentAlignment.MiddleCenter;
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item.Checked = false;
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//将宽度进行补偿
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int _width = this.ItemWidth + (this.Columns > 0 ? (deltaX / this.Columns) : 0);
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int _offsetWidth = this.Columns > 0 ? (deltaX % this.Columns) : 0;
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//if (i % _offsetWidth == 0)
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//{
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// _width += _offset;
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//}
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//将高度误差补入第一行
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int _height = this.ItemHeight + deltaY;
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//if (this.Columns - mainContainer.SubItems.Count > 0)
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//{
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// _height += deltaY;
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//}
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//显示大小
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item.TileSize = new Size(_width, _height);
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//显示编码后，调整呈现位置
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item.TileStyle.TextAlignment = DevComponents.DotNetBar.eStyleTextAlignment.Center;
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item.TileStyle.TextLineAlignment = DevComponents.DotNetBar.eStyleTextAlignment.Near;
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item.TitleTextAlignment = System.Drawing.ContentAlignment.BottomRight;
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var price = decimal.Zero;
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switch (this._priceType)
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{
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case PriceTypeEnum.零售价:
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{
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price = entity.Price;
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}
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break;
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case PriceTypeEnum.最低售价:
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{
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price = entity.MinPrice;
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}
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break;
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case PriceTypeEnum.外送价:
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{
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price = entity.OtherPrice;
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}
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break;
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case PriceTypeEnum.会员价:
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{
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price = entity.MemberPrice;
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}
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break;
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}
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//品名
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item.TileStyle.TextColor = ColorTranslator.FromHtml("#444444");
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//售价
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item.TitleTextColor = ColorTranslator.FromHtml("#F45B63");
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//绑定商品Tag属性
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item.Tag = ObjectUtils.Copy(entity);
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switch (entity.Name)
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{
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case Constant.PREV_PAGER:
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{
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item.TileStyle.BackgroundImage = _defaultImage;
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item.Image = global::POSV.Properties.Resources.上一页_2x;
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item.ImageTextAlignment = ContentAlignment.MiddleCenter;
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item.Text = string.Empty;
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}
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break;
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case Constant.NEXT_PAGER:
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{
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item.TileStyle.BackgroundImage = _defaultImage;
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item.Image = global::POSV.Properties.Resources.下一页_2x;
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item.ImageTextAlignment = ContentAlignment.MiddleCenter;
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item.Text = string.Empty;
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}
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break;
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default:
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{
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//显示编码后，调整呈现位置
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item.TitleText = string.Format("¥{0}", price.ToString());
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//绑定商品名称到Text属性
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item.Text = entity.Name;
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}
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break;
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}
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item.MouseDown -= OnProductMouseDown;
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item.MouseDown += OnProductMouseDown;
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mainContainer.SubItems.Add(item);
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}
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this.itemPanel.Items.Insert(0, mainContainer);
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this.itemPanel.Invalidate();
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}
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catch (Exception ex)
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{
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LOGGER.Error(ex, "构建商品控件内容异常");
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}
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}
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private void OnProductMouseDown(object sender, MouseEventArgs e)
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{
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if (e.Button == MouseButtons.Left)
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{
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MetroTileItem item = (MetroTileItem)sender;
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var product = item.Tag as ProductExt;
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switch (product.Name)
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{
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case Constant.PREV_PAGER:
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{
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this.PageNumber = product.Pager;
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this.BindDataSource(this._dataSource, this._priceType);
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}
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break;
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case Constant.NEXT_PAGER:
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{
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this.PageNumber = product.Pager;
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this.BindDataSource(this._dataSource, this._priceType);
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}
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break;
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default:
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{
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OnProductXClick(new ProductXEventArgs((ProductExt)item.Tag));
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}
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break;
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}
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}
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}
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public event ProductXEventHandler ProductXClick;
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protected virtual void OnProductXClick(ProductXEventArgs e)
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{
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ProductXClick?.Invoke(this, e);
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}
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/// <summary>
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/// 分页List数据
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/// </summary>
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/// <param name="data"></param>
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/// <returns></returns>
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public List<T> ListPager<T>(List<T> data)
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{
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var result = new List<T>();
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result.AddRange(data.Skip((this.PageNumber - 1) * this.PageSize).Take(this.PageSize));
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return result;
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}
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private MetroTileItem _selectedItem = null;
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public MetroTileItem SelectedItem
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{
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get { return this._selectedItem; }
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private set { this._selectedItem = value; }
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}
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/// <summary>
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/// 每页数量
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/// </summary>
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public int PageSize { get; private set; }
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/// <summary>
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/// 总页数
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/// </summary>
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public int PageCount => this.PageSize <= 0 ? 0 : ((TotalCount + this.PageSize - 1) / this.PageSize);
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/// <summary>
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/// 当前页码
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/// </summary>
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public int PageNumber { get; set; }
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/// <summary>
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/// 总数量
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/// </summary>
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public int TotalCount { get; private set; }
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private int _columns = 1;
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/// <summary>
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/// 显示的列数
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/// </summary>
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public int Columns
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{
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get
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{
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return _columns;
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}
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set
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{
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_columns = (value < 0 ? 1 : value);
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}
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}
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private int _rows = 1;
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/// <summary>
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/// 显示行数
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/// </summary>
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public int Rows
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{
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get
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{
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return _rows;
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}
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set
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{
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_rows = (value < 0 ? 1 : value);
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}
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}
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public int ItemHeight { get; set; } = PRODUCT_DEFAULT_HEIGHT;
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public int ItemWidth { get; set; } = PRODUCT_DEFAULT_WIDTH;
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/// <summary>
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/// 控件间距
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/// </summary>
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public int ItemSpace { get; set; } = 2;
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}
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/// <summary>
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/// 价格类型
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/// </summary>
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public enum PriceTypeEnum
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{
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零售价,
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会员价,
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进价,
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最低售价,
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配送价,
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批发价,
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外送价
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}
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public delegate void ProductXEventHandler(object sender, ProductXEventArgs e);
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public class ProductXEventArgs : EventArgs
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{
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public ProductExt Product;
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public ProductXEventArgs(ProductExt data)
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{
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this.Product = data;
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}
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}
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public class ProductXMerge
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{
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private static NLog.Logger logger = NLog.LogManager.GetCurrentClassLogger();
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public static List<ProductExt> Merge(int rows, int cols, List<ProductExt> dataSource, bool touchEnabled)
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{
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Stopwatch sw = Stopwatch.StartNew();
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//启用触摸屏，不分页
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if (touchEnabled)
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{
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return dataSource;
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}
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//移除可能存在的分页标识
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dataSource.RemoveAll(x => Constant.PREV_PAGER.Equals(x.Name) || Constant.NEXT_PAGER.Equals(x.Name));
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int pageSize = rows * cols;
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int totalCount = dataSource.Count;
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//启用分页
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int pageCount = ((totalCount - 1) + (pageSize - 2) - 1) / (pageSize - 2);
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if (pageCount > 1)
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{
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int offset = 0;
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for (int page = 1; page <= pageCount; page++)
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{
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if (page == 1)
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{
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offset = page * pageSize - 1;
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var entity = new ProductExt();
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entity.Id = IdWorkerUtils.Instance.NextId();
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entity.Name = Constant.NEXT_PAGER;
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entity.Pager = (page + 1);
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dataSource.Insert(offset, entity);
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}
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else if (page < pageCount)
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{
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offset = page * pageSize - 2;
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var entity = new ProductExt();
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entity.Id = IdWorkerUtils.Instance.NextId();
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entity.Name = Constant.PREV_PAGER;
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entity.Pager = (page - 1);
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dataSource.Insert(offset, entity);
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offset++;
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entity = new ProductExt();
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entity.Id = IdWorkerUtils.Instance.NextId();
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entity.Name = Constant.NEXT_PAGER;
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entity.Pager = (page + 1);
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dataSource.Insert(offset, entity);
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}
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else
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{
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var entity = new ProductExt();
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entity.Id = IdWorkerUtils.Instance.NextId();
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entity.Name = Constant.PREV_PAGER;
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entity.Pager = (page - 1);
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dataSource.Add(entity);
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}
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}
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}
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logger.Info("商品控件插入分页控件，耗时<{0}>", sw.ElapsedMilliseconds);
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return dataSource;
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}
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}
|
|
|
}
|