using System;
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using System.Collections.Generic;
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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 System.Drawing;
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using System.ComponentModel;
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using static DPumpHydr.WinFrmUI.WenSkin.Controls.WenButton;
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namespace DPumpHydr.WinFrmUI.WenSkin.Controls
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{
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public class WenPaging : WenControl, ISupportInitialize
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{
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public WenPaging() : base()
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{
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int width = 414;
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int height = 32;
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int buttonWidth = 68;
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this.Size = new Size(width, height);
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WenButton bePageButton = new WenButton()
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{
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Location = new Point(1, 1),
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Size = new Size(buttonWidth, height - 2),
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Text = "上一页",
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};
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bePageButton.Click += (s, e) =>
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{
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if (PageIndex > 1)
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{
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OnPagingButtonClick(new PagingButtonClickEventArgs(PageIndex - 1));
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}
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};
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WenButton nextPageButton = new WenButton()
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{
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Location = new Point(width - buttonWidth - 1, 1),
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Size = new Size(buttonWidth, height - 2),
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Text = "下一页",
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Anchor = AnchorStyles.Right | AnchorStyles.Top
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};
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nextPageButton.Click += (s, e) =>
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{
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if (PageIndex < MaxPageCout)
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{
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OnPagingButtonClick(new PagingButtonClickEventArgs(PageIndex + 1));
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}
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};
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flow = new FlowLayoutPanel()
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{
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Location = new Point(1 + buttonWidth + 1, 1),
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Size = new Size(width - buttonWidth * 2 - 2, height - 2),
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Anchor = AnchorStyles.Left | AnchorStyles.Right | AnchorStyles.Top | AnchorStyles.Bottom,
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};
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this.Controls.Add(bePageButton);
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this.Controls.Add(nextPageButton);
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this.Controls.Add(flow);
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}
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#region 私有属性
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private readonly FlowLayoutPanel flow;
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private int pageIndex = 1;
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//private int maxPageButtonCount = 6;
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private readonly int pageButtonWidth = 38;
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private int maxPageCout = 1;
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private Color selectedPageColor = Color.FromArgb(63, 63, 70);
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#endregion
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#region 公有属性
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[Category("Wen"), Description("获取当前页数"), DefaultValue(1)]
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public int PageIndex { get => pageIndex; set { pageIndex = value; RefreshButton(); } }
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[Category("Wen"), Description("获取或设置最大页数"), DefaultValue(1)]
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public int MaxPageCout { get => maxPageCout; set { maxPageCout = value; RefreshButton(); } }
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[Category("Wen"), Description("是否自动调节控件宽度"), DefaultValue(false)]
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public bool AutoSizeWidth { get; set; }
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[Category("Wen"), Description("是否自动调节控件宽度"), DefaultValue(typeof(Color), "63,63,70")]
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public Color SelectedPageColor { get => selectedPageColor; set { selectedPageColor = value;this.Invalidate(); } }
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#endregion
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#region 按钮刷新
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private void RefreshButton()
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{
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flow.Controls.Clear();
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//先绑定第一页
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WenButton wenButtonOne = new WenButton("1")
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{
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Width = pageButtonWidth,
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Margin = new Padding(1, 0, 0, 0),
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};
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if (PageIndex == 1)
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{
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wenButtonOne.BackColor = SelectedPageColor;
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}
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wenButtonOne.Click += (s, e) =>
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{
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OnPagingButtonClick(new PagingButtonClickEventArgs(1));
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};
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flow.Controls.Add(wenButtonOne);
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if (maxPageCout < 2)
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return;
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int startIndex = 2;
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int endIndex = maxPageCout - 1;
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if (PageIndex - 2 > 1 && PageIndex + 2 < maxPageCout)
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{
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endIndex = PageIndex + 2;
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startIndex = PageIndex - 2;
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}
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else if (PageIndex - 2 < 2 && 7 - 1 < maxPageCout)
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{
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startIndex = 2;
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endIndex = 7 - 1;
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}
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else if (PageIndex - 2 < 1 && 7 - 1 > maxPageCout)
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{
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startIndex = 2;
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endIndex = maxPageCout - 1;
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}
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else if (PageIndex + 2 >= maxPageCout && maxPageCout - (7 - 2) > 1)
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{
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startIndex = maxPageCout - (7 - 2);
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endIndex = maxPageCout - 1;
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}
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for (int i = startIndex; i <= endIndex; i++)
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{
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int index = i;
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WenButton wenButton = new WenButton((i).ToString())
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{
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Width = pageButtonWidth,
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Margin = new Padding(1, 0, 0, 0),
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};
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if (PageIndex == i)
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{
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wenButton.BackColor = SelectedPageColor;
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}
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wenButton.Click += (s, e) =>
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{
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OnPagingButtonClick(new PagingButtonClickEventArgs(index));
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};
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flow.Controls.Add(wenButton);
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}
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//绑定最后一页
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WenButton wenButtonLast = new WenButton(maxPageCout.ToString())
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{
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Width = pageButtonWidth,
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Margin = new Padding(1, 0, 0, 0),
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};
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if (PageIndex == maxPageCout)
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{
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wenButtonLast.BackColor = SelectedPageColor;
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}
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wenButtonLast.Click += (s, e) =>
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{
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OnPagingButtonClick(new PagingButtonClickEventArgs(maxPageCout));
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};
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flow.Controls.Add(wenButtonLast);
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if (AutoSizeWidth)
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{
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this.Width = 70 * 2 + flow.Controls.Count * (pageButtonWidth + 1) + 1;
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}
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}
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#endregion
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#region 重绘
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protected override void WenOnPaint(Graphics g, Rectangle rec, PaintEventArgs e)
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{
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base.WenOnPaint(g, rec, e);
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g.DrawRectangle(Pens.Gray, 0, 0, Width - 1, Height - 1);
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}
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#endregion
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public void BeginInit()
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{
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}
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public void EndInit()
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{
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RefreshButton();
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}
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#region 委托
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public delegate void PagingButtonClickEventHandler(object sender, PagingButtonClickEventArgs e);
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[Category("Wen"), Description("按钮点击事件")]
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public event PagingButtonClickEventHandler PagingButtonClick;
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public class PagingButtonClickEventArgs : EventArgs
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{
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private readonly int pageIndex;
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public PagingButtonClickEventArgs(int pageIndex)
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{
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this.pageIndex = pageIndex;
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}
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public int PageIndex => pageIndex;
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}
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protected virtual void OnPagingButtonClick(PagingButtonClickEventArgs e)
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{
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PageIndex = e.PageIndex;
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PagingButtonClick?.Invoke(this, e);
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}
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#endregion
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}
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}
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