// COPYRIGHT (C) Tom. ALL RIGHTS RESERVED.
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// THE AntdUI PROJECT IS AN WINFORM LIBRARY LICENSED UNDER THE Apache-2.0 License.
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// LICENSED UNDER THE Apache License, VERSION 2.0 (THE "License")
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// YOU MAY NOT USE THIS FILE EXCEPT IN COMPLIANCE WITH THE License.
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// YOU MAY OBTAIN A COPY OF THE LICENSE AT
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING, SOFTWARE
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// DISTRIBUTED UNDER THE LICENSE IS DISTRIBUTED ON AN "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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// SEE THE LICENSE FOR THE SPECIFIC LANGUAGE GOVERNING PERMISSIONS AND
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// LIMITATIONS UNDER THE License.
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// GITEE: https://gitee.com/antdui/AntdUI
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// GITHUB: https://github.com/AntdUI/AntdUI
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// CSDN: https://blog.csdn.net/v_132
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// QQ: 17379620
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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.Drawing.Design;
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using System.Windows.Forms;
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namespace AntdUI
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{
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/// <summary>
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/// Pagination 分页
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/// </summary>
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/// <remarks>采用分页的形式分隔长列表，每次只加载一个页面。</remarks>
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[Description("Pagination 分页")]
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[ToolboxItem(true)]
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[DefaultProperty("Current")]
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[DefaultEvent("ValueChanged")]
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public class Pagination : IControl
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{
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#region 属性
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int current = 1;
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/// <summary>
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/// 当前页数
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/// </summary>
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[Description("当前页数"), Category("数据"), DefaultValue(1)]
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public int Current
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{
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get => current;
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set
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{
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if (value < 1) value = 1;
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else if (value > PageTotal) value = PageTotal;
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if (current == value) return;
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current = value;
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ValueChanged?.Invoke(this, new PagePageEventArgs(current, total, pageSize, PageTotal));
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ButtonLayout();
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Invalidate();
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}
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}
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int total = 0;
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/// <summary>
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/// 数据总数
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/// </summary>
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[Description("数据总数"), Category("数据"), DefaultValue(0)]
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public int Total
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{
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get => total;
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set
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{
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if (total == value) return;
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total = value;
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ButtonLayout();
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Invalidate();
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}
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}
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int pageSize = 10;
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/// <summary>
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/// 每页条数
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/// </summary>
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[Description("每页条数"), Category("数据"), DefaultValue(10)]
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public int PageSize
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{
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get => pageSize;
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set
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{
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if (pageSize == value) return;
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pageSize = value;
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if (Math.Ceiling(total * 1.0 / pageSize) < current) current = (int)Math.Ceiling(total * 1.0 / pageSize);
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ValueChanged?.Invoke(this, new PagePageEventArgs(current, total, pageSize, PageTotal));
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if (input_SizeChanger != null)
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{
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string tips = Localization.Provider?.GetLocalizedString("ItemsPerPage") ?? "条/页";
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input_SizeChanger.Clear();
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input_SizeChanger.PlaceholderText = value.ToString() + " " + tips;
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}
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ButtonLayout();
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Invalidate();
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}
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}
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/// <summary>
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/// 最大显示总页数
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/// </summary>
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[Description("最大显示总页数"), Category("行为"), DefaultValue(0)]
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public int MaxPageTotal { get; set; } = 0;
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/// <summary>
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/// 总页数
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/// </summary>
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[Description("总页数"), Category("数据")]
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public int PageTotal { get; private set; } = 1;
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int _gap = 8;
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/// <summary>
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/// 间距
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/// </summary>
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[Description("间距"), Category("外观"), DefaultValue(8)]
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public int Gap
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{
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get => _gap;
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set
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{
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if (_gap == value) return;
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_gap = value;
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ButtonLayout();
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Invalidate();
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}
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}
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/// <summary>
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/// Value 属性值更改时发生
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/// </summary>
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[Description("Value 属性值更改时发生"), Category("行为")]
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public event PageValueEventHandler? ValueChanged;
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/// <summary>
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/// 显示数据总量
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/// </summary>
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[Description("用于显示数据总量"), Category("行为")]
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public event PageValueRtEventHandler? ShowTotalChanged;
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bool showSizeChanger = false;
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/// <summary>
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/// 是否展示 PageSize 切换器
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/// </summary>
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[Description("是否展示 PageSize 切换器"), Category("行为"), DefaultValue(false)]
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public bool ShowSizeChanger
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{
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get => showSizeChanger;
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set
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{
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if (showSizeChanger == value) return;
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showSizeChanger = value;
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if (!value) InputSizeChangerDispose();
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ButtonLayout();
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Invalidate();
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}
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}
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int[]? pageSizeOptions = null;
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/// <summary>
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/// 指定每页可以显示多少条
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/// </summary>
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[Description("指定每页可以显示多少条"), Category("行为"), DefaultValue(null)]
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public int[]? PageSizeOptions
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{
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get => pageSizeOptions;
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set
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{
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if (pageSizeOptions == value) return;
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pageSizeOptions = value;
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InputSizeChangerDispose();
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if (showSizeChanger)
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{
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ButtonLayout();
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Invalidate();
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}
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}
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}
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int sizeChangerWidth = 0;
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[Description("SizeChanger 宽度"), Category("行为"), DefaultValue(0)]
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public int SizeChangerWidth
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{
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get => sizeChangerWidth;
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set
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{
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if (sizeChangerWidth == value) return;
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sizeChangerWidth = value;
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if (showSizeChanger)
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{
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InputSizeChangerDispose();
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ButtonLayout();
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Invalidate();
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}
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}
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}
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int pyr = 0;
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public override Rectangle DisplayRectangle
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{
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get => ClientRectangle.PaddingRect(Padding, 0, 0, pyr, 0, borderWidth * Config.Dpi);
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}
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Color? fill;
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/// <summary>
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/// 颜色
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/// </summary>
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[Description("颜色"), Category("外观"), DefaultValue(null)]
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[Editor(typeof(Design.ColorEditor), typeof(UITypeEditor))]
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public Color? Fill
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{
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get => fill;
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set
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{
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fill = value;
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if (input_SizeChanger != null) input_SizeChanger.BorderColor = value;
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Invalidate();
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}
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}
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int radius = 6;
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/// <summary>
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/// 圆角
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/// </summary>
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[Description("圆角"), Category("外观"), DefaultValue(6)]
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public int Radius
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{
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get => radius;
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set
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{
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if (radius == value) return;
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radius = value;
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Invalidate();
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}
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}
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float borderWidth = 1F;
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/// <summary>
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/// 边框宽度
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/// </summary>
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[Description("边框宽度"), Category("边框"), DefaultValue(1F)]
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public float BorderWidth
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{
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get => borderWidth;
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set
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{
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if (borderWidth == value) return;
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borderWidth = value;
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Invalidate();
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}
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}
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RightToLeft rightToLeft = RightToLeft.No;
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[Description("反向"), Category("外观"), DefaultValue(RightToLeft.No)]
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public override RightToLeft RightToLeft
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{
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get => rightToLeft;
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set
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{
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if (rightToLeft == value) return;
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rightToLeft = value;
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ButtonLayout();
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Invalidate();
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}
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}
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string? textdesc;
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[Description("主动显示内容"), Category("外观"), DefaultValue(null)]
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public string? TextDesc
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{
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get => textdesc;
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set
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{
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if (textdesc == value) return;
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textdesc = value;
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ButtonLayout();
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Invalidate();
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}
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}
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#endregion
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#region 渲染
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readonly StringFormat s_f = Helper.SF_NoWrap();
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protected override void OnPaint(PaintEventArgs e)
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{
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if (buttons.Length < 2) return;
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var g = e.Graphics.High();
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float border = borderWidth * Config.Dpi, _radius = radius * Config.Dpi;
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if (Enabled)
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{
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Color fore = Style.Db.Text, color = fill ?? Style.Db.Primary;
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using (var brush_hover = new SolidBrush(Style.Db.FillSecondary))
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{
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#region 渲染上下
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var btn_previous = buttons[0];
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if (btn_previous.hover)
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{
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using (var path_previous = btn_previous.rect.RoundPath(_radius))
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{
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g.FillPath(brush_hover, path_previous);
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}
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}
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using (var pen_arrow = new Pen(btn_previous.enabled ? fore : Style.Db.TextQuaternary, border))
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{
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g.DrawLines(pen_arrow, TAlignMini.Left.TriangleLines(btn_previous.rect));
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}
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var btn_next = buttons[1];
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if (btn_next.hover)
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{
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using (var path_next = btn_next.rect.RoundPath(_radius))
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{
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g.FillPath(brush_hover, path_next);
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}
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}
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using (var pen_arrow = new Pen(btn_next.enabled ? fore : Style.Db.TextQuaternary, border))
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{
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g.DrawLines(pen_arrow, TAlignMini.Right.TriangleLines(btn_next.rect));
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}
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#endregion
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using (var brush = new SolidBrush(fore))
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{
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if (showTotal != null) g.DrawStr(showTotal, Font, brush, rect_text, s_f);
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for (int i = 2; i < buttons.Length; i++)
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{
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var btn = buttons[i];
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if (btn.hover)
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{
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using (var path = btn.rect.RoundPath(_radius))
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{
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g.FillPath(brush_hover, path);
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}
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}
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if (btn.prog > 0)
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{
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using (var brush_prog = new SolidBrush(Style.Db.TextQuaternary))
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{
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g.DrawStr("•••", Font, brush_prog, btn.rect, s_f);
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}
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}
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else
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{
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if (current == btn.num)
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{
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using (var path = btn.rect.RoundPath(_radius))
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{
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using (var pen = new Pen(color, border))
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{
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g.DrawPath(pen, path);
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}
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}
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}
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g.DrawStr(btn.key, Font, brush, btn.rect, s_f);
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}
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}
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}
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}
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}
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else
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{
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#region 渲染上下
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var btn_previous = buttons[0];
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using (var pen_arrow = new Pen(Style.Db.TextQuaternary, border))
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{
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g.DrawLines(pen_arrow, TAlignMini.Left.TriangleLines(btn_previous.rect));
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}
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var btn_next = buttons[1];
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using (var pen_arrow = new Pen(Style.Db.TextQuaternary, border))
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{
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g.DrawLines(pen_arrow, TAlignMini.Right.TriangleLines(btn_next.rect));
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}
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#endregion
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using (var brush = new SolidBrush(Style.Db.TextQuaternary))
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{
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if (showTotal != null) g.DrawStr(showTotal, Font, brush, rect_text, s_f);
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for (int i = 2; i < buttons.Length; i++)
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{
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var btn = buttons[i];
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if (btn.prog > 0)
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{
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g.DrawStr("•••", Font, brush, btn.rect, s_f);
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}
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else
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{
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if (current == btn.num)
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{
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using (var path = btn.rect.RoundPath(_radius))
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{
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using (var brush_2 = new SolidBrush(Style.Db.Fill))
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{
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g.FillPath(brush_2, path);
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}
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}
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}
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g.DrawStr(btn.key, Font, brush, btn.rect, s_f);
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}
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}
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}
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}
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}
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#endregion
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#region 鼠标
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protected override void OnMouseMove(MouseEventArgs e)
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{
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if (buttons.Length > 0)
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{
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int count = 0, count_no = 0, count_hand = 0;
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for (int i = 0; i < buttons.Length; i++)
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{
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var btn = buttons[i];
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var hover = false;
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if (btn.enabled) hover = btn.rect.Contains(e.Location);
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else if ((i == 0 || i == 1) && btn.rect.Contains(e.Location))
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{
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count_no++;
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}
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if (btn.hover != hover)
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{
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btn.hover = hover;
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count++;
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}
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if (btn.hover) count_hand++;
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}
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if (count_no > 0) SetCursor(CursorType.No);
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else SetCursor(count_hand > 0);
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if (count > 0) Invalidate();
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}
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base.OnMouseMove(e);
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}
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protected override void OnMouseLeave(EventArgs e)
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{
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SetCursor(false);
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if (buttons.Length > 0)
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{
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int count = 0;
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foreach (var btn in buttons)
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{
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if (btn.hover)
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{
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btn.hover = false;
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count++;
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}
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}
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if (count > 0) Invalidate();
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}
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base.OnMouseLeave(e);
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}
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protected override void OnMouseDown(MouseEventArgs e)
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{
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if (buttons.Length > 0)
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{
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for (int i = 0; i < buttons.Length; i++)
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{
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var btn = buttons[i];
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if (btn.enabled && btn.rect.Contains(e.Location))
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{
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if (i == 0) Current = current - 1;
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else if (i == 1) Current = current + 1;
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else if (btn.prog > 0)
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{
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if (btn.prog == 2) Current = current - 5;
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else Current = current + 5;
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}
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else Current = btn.num;
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Focus();
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return;
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}
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}
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}
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base.OnMouseDown(e);
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}
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#endregion
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#region 布局
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protected override void OnSizeChanged(EventArgs e)
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{
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ButtonLayout();
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base.OnSizeChanged(e);
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}
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ButtonLoad[] buttons = new ButtonLoad[0];
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internal string? showTotal = null;
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internal Rectangle rect_text;
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Input? input_SizeChanger = null;
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void InputSizeChangerDispose()
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{
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if (InvokeRequired)
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{
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Invoke(new Action(InputSizeChangerDispose));
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return;
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}
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input_SizeChanger?.Dispose();
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input_SizeChanger = null;
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}
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void ButtonLayout()
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{
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var rect = ClientRectangle.PaddingRect(Padding, borderWidth * Config.Dpi);
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if (showSizeChanger)
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{
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int wsize = (int)(4 * Config.Dpi);
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rect.Y += wsize;
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rect.Height -= wsize * 2;
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}
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bool sizeChanger = ShowSizeChanger;
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int t_Width = rect.Width, _SizeChangerWidth = 0;
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if (t_Width > 1)
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{
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if (sizeChanger)
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{
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_SizeChangerWidth = InitSizeChanger(rect);
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t_Width -= _SizeChangerWidth;
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}
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int gap = (int)(_gap * Config.Dpi);
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int total_button = t_Width / (rect.Height + gap);//总共多少按钮
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if (total_button < 3)
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{
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buttons = new ButtonLoad[0];
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return;
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}
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int total_page = (int)Math.Ceiling((total * 1.0) / pageSize);//总页数
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if (total_page == 0) total_page = 1;
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if (textdesc == null) showTotal = ShowTotalChanged?.Invoke(this, new PagePageEventArgs(current, total, pageSize, total_page));
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else showTotal = textdesc;
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int pyrn = Helper.GDI(g =>
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{
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var dir = new Dictionary<int, int>();
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int min = 100, max_size = rect.Height;
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for (int i = 0; i <= total_page; i++)
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{
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if (i == min)
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{
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min = min * 10;
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var size_font = g.MeasureString((i + 1).ToString(), Font).Size();
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if (size_font.Width > rect.Height)
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{
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max_size = size_font.Width;
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dir.Add(i.ToString().Length, size_font.Width);
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}
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}
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}
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int x = 0;
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if (showTotal != null)
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{
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var size_font = g.MeasureString(showTotal, Font);
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x = (int)Math.Ceiling(size_font.Width);
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rect_text = new Rectangle(rect.X, rect.Y, x, rect.Height);
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}
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total_button = (int)Math.Floor((t_Width - x) / ((max_size * 1.0) + gap));//总共多少按钮
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if (total_button < 3)
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{
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buttons = new ButtonLoad[0];
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return 0;
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}
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if (MaxPageTotal > 0 && total_button > MaxPageTotal + 2) total_button = MaxPageTotal + 2;
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int total_page_button = total_button - 2;
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PageTotal = total_page;
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bool has_previous = current > 1, has_next = total_page > current;//是否还有下一页
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var _buttons = new List<ButtonLoad>(total_button) {
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new ButtonLoad(new Rectangle(x + rect.X, rect.Y, rect.Height, rect.Height),has_previous)
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};
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int n_x = _buttons[0].rect.Right + gap;
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if (total_page > total_page_button)
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{
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//大于
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int _tol = total_page_button;
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int center_page_button = (int)Math.Ceiling(total_page_button / 2F);
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if (current <= center_page_button)
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{
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for (int i = 0; i < _tol - 2; i++) n_x += AddButs(ref _buttons, dir, new ButtonLoad(i + 1, new Rectangle(n_x, rect.Y, rect.Height, rect.Height), true)) + gap;
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n_x += AddButs(ref _buttons, dir, new ButtonLoad(_tol - 2, new Rectangle(n_x, rect.Y, rect.Height, rect.Height), true, 1)) + gap;
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//添加最后一页
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n_x += AddButs(ref _buttons, dir, new ButtonLoad(total_page, new Rectangle(n_x, rect.Y, rect.Height, rect.Height), true));
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}
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else if (current > total_page - center_page_button)
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{
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n_x += AddButs(ref _buttons, dir, new ButtonLoad(1, new Rectangle(n_x, rect.Y, rect.Height, rect.Height), true)) + gap;
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int last_i = total_page - (_tol - 3);
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n_x += AddButs(ref _buttons, dir, new ButtonLoad(last_i, new Rectangle(n_x, rect.Y, rect.Height, rect.Height), true, 2)) + gap;
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for (int i = 0; i < _tol - 2; i++) n_x += AddButs(ref _buttons, dir, new ButtonLoad(last_i + i, new Rectangle(n_x, rect.Y, rect.Height, rect.Height), true)) + gap;
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}
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else
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{
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int last_i = total_page - (_tol - 3);
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#region 前
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n_x += AddButs(ref _buttons, dir, new ButtonLoad(1, new Rectangle(n_x, rect.Y, rect.Height, rect.Height), true)) + gap;
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n_x += AddButs(ref _buttons, dir, new ButtonLoad(1, new Rectangle(n_x, rect.Y, rect.Height, rect.Height), true, 2)) + gap;
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#endregion
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int center_len = (_tol - 4);
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var start = current - center_len / 2;
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for (int i = 0; i < center_len; i++) n_x += AddButs(ref _buttons, dir, new ButtonLoad(start + i, new Rectangle(n_x, rect.Y, rect.Height, rect.Height), true)) + gap;
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#region 后
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n_x += AddButs(ref _buttons, dir, new ButtonLoad(last_i, new Rectangle(n_x, rect.Y, rect.Height, rect.Height), true, 1)) + gap;
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n_x += AddButs(ref _buttons, dir, new ButtonLoad(total_page, new Rectangle(n_x, rect.Y, rect.Height, rect.Height), true));
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#endregion
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}
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}
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else
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{
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//不够
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for (int i = 0; i < total_page; i++) n_x += AddButs(ref _buttons, dir, new ButtonLoad(i + 1, new Rectangle(n_x, rect.Y, rect.Height, rect.Height), true)) + gap;
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}
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_buttons.Insert(1, new ButtonLoad(new Rectangle(_buttons[_buttons.Count - 1].rect.Right + gap, rect.Y, rect.Height, rect.Height), has_next));
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int valr = 0;
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if (RightToLeft == RightToLeft.Yes)
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{
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var py = rect.Right - _buttons[1].rect.Right;
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if (sizeChanger) py -= _SizeChangerWidth;
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foreach (var btn in _buttons) btn._rect.Offset(py, 0);
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rect_text.Offset(py, 0);
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}
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else if (sizeChanger) valr = rect.Right - _buttons[1].rect.Right - _SizeChangerWidth;
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buttons = _buttons.ToArray();
|
return valr;
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});
|
if (pyr == pyrn) return;
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pyr = pyrn;
|
if (InvokeRequired) Invoke(new Action(() => { OnSizeChanged(EventArgs.Empty); }));
|
else OnSizeChanged(EventArgs.Empty);
|
}
|
}
|
int InitSizeChanger(Rectangle rect)
|
{
|
if (input_SizeChanger == null)
|
{
|
string tips = Localization.Provider?.GetLocalizedString("ItemsPerPage") ?? "条/页";
|
var placeholder = pageSize.ToString() + " " + tips;
|
bool r = rightToLeft == RightToLeft.Yes;
|
int width = GetSizeChangerWidth(placeholder);
|
if (pageSizeOptions == null || pageSizeOptions.Length == 0)
|
{
|
var input = new Input
|
{
|
PlaceholderText = placeholder,
|
Size = new Size(width, rect.Height),
|
Dock = DockStyle.Right,
|
Font = Font,
|
BorderColor = fill
|
};
|
input_SizeChanger = input;
|
}
|
else
|
{
|
var input = new Select
|
{
|
PlaceholderText = placeholder,
|
ListAutoWidth = true,
|
DropDownArrow = true,
|
Placement = TAlignFrom.Top,
|
Size = new Size(width, rect.Height),
|
Dock = DockStyle.Right,
|
Font = Font,
|
BorderColor = fill
|
};
|
foreach (var it in pageSizeOptions) input.Items.Add(it);
|
input.SelectedValue = pageSize;
|
input.Text = "";
|
input.SelectedValueChanged += (a, b) =>
|
{
|
if (b.Value is int pageSize) PageSize = pageSize;
|
};
|
input_SizeChanger = input;
|
}
|
if (InvokeRequired)
|
{
|
Invoke(new Action(() =>
|
{
|
Controls.Add(input_SizeChanger);
|
}));
|
}
|
else Controls.Add(input_SizeChanger);
|
input_SizeChanger.KeyPress += Input_SizeChanger_KeyPress;
|
return width;
|
}
|
else
|
{
|
if (sizeChangerWidth <= 0)
|
{
|
string tips = Localization.Provider?.GetLocalizedString("ItemsPerPage") ?? "条/页";
|
var placeholder = pageSize.ToString() + " " + tips;
|
int width = GetSizeChangerWidth(placeholder);
|
if (InvokeRequired)
|
{
|
Invoke(new Action(() =>
|
{
|
input_SizeChanger.Width = width;
|
}));
|
}
|
else input_SizeChanger.Width = width;
|
return width;
|
}
|
return input_SizeChanger.Width;
|
}
|
}
|
|
int GetSizeChangerWidth(string placeholder)
|
{
|
if (sizeChangerWidth > 0) return (int)(sizeChangerWidth * Config.Dpi);
|
int wsize = (int)(4 * Config.Dpi) * 2;
|
if (pageSizeOptions == null || pageSizeOptions.Length == 0)
|
{
|
return Helper.GDI(g =>
|
{
|
var size = g.MeasureString(placeholder, Font).Size();
|
return size.Width + wsize + (int)Math.Ceiling(size.Height * 0.6F);
|
});
|
}
|
else
|
{
|
return Helper.GDI(g =>
|
{
|
var size = g.MeasureString(placeholder, Font).Size();
|
return size.Width + wsize + (int)Math.Ceiling(size.Height * 1.32F);
|
});
|
}
|
}
|
|
protected override void OnFontChanged(EventArgs e)
|
{
|
base.OnForeColorChanged(e);
|
if (input_SizeChanger != null) input_SizeChanger.Font = Font;
|
}
|
|
int AddButs(ref List<ButtonLoad> buttons, Dictionary<int, int> dir, ButtonLoad button)
|
{
|
if (button.key.Length > 1)
|
{
|
if (dir.TryGetValue(button.key.Length, out var it))
|
{
|
button._rect.Width = it;
|
}
|
}
|
buttons.Add(button);
|
return button.rect.Width;
|
}
|
private void Input_SizeChanger_KeyPress(object? sender, KeyPressEventArgs e)
|
{
|
if (e.KeyChar == 13 && sender is Input input)
|
{
|
e.Handled = true;
|
if (int.TryParse(input.Text, out var num)) PageSize = num;
|
}
|
}
|
|
class ButtonLoad
|
{
|
public ButtonLoad(Rectangle _rect, bool enable)
|
{
|
rect = _rect;
|
key = "";
|
enabled = enable;
|
}
|
|
public ButtonLoad(int _num, Rectangle _rect, bool enable)
|
{
|
num = _num;
|
rect = _rect;
|
key = _num.ToString();
|
enabled = enable;
|
}
|
public ButtonLoad(int _num, Rectangle _rect, bool enable, int p)
|
{
|
num = _num;
|
rect = _rect;
|
key = _num.ToString();
|
enabled = enable;
|
prog = p;
|
}
|
internal Rectangle _rect;
|
public Rectangle rect
|
{
|
get => _rect;
|
set => _rect = value;
|
}
|
|
public string key { get; set; }
|
public int num { get; set; }
|
public bool enabled { get; set; }
|
public int prog { get; set; }
|
public bool hover { get; set; }
|
}
|
|
#endregion
|
|
public bool ProcessCmdKey(Keys keyData)
|
{
|
if (keyData == Keys.Left)
|
{
|
var val = current - 1;
|
if (val < 1 || val > PageTotal) return false;
|
Current = val;
|
return true;
|
}
|
else if (keyData == Keys.Right)
|
{
|
var val = current + 1;
|
if (val < 1 || val > PageTotal) return false;
|
Current = val;
|
return true;
|
}
|
return false;
|
}
|
}
|
}
|
