// 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.Drawing.Drawing2D;
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namespace AntdUI
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{
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/// <summary>
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/// Select 选择器
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/// </summary>
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/// <remarks>下拉选择器。</remarks>
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[Description("Select 选择器")]
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[ToolboxItem(true)]
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[DefaultEvent("SelectedIndexChanged")]
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public class Select : Input, SubLayeredForm
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{
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#region 属性
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protected override bool BanInput => _list;
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bool _list = false;
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/// <summary>
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/// 是否列表样式
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/// </summary>
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[Description("是否列表样式"), Category("外观"), DefaultValue(false)]
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public bool List
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{
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get => _list;
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set
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{
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if (_list == value) return;
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_list = value;
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ReadShowCaret = value;
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if (value) ShowCaret = false;
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}
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}
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/// <summary>
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/// 菜单弹出位置
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/// </summary>
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[Description("菜单弹出位置"), Category("行为"), DefaultValue(TAlignFrom.BL)]
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public TAlignFrom Placement { get; set; } = TAlignFrom.BL;
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/// <summary>
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/// 是否列表自动宽度
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/// </summary>
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[Description("是否列表自动宽度"), Category("行为"), DefaultValue(false)]
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public bool ListAutoWidth { get; set; } = false;
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/// <summary>
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/// 列表最多显示条数
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/// </summary>
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[Description("列表最多显示条数"), Category("行为"), DefaultValue(4)]
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public int MaxCount { get; set; } = 4;
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/// <summary>
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/// 下拉箭头是否显示
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/// </summary>
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[Description("下拉箭头是否显示"), Category("外观"), DefaultValue(false)]
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public bool DropDownArrow { get; set; } = false;
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/// <summary>
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/// 点击到最里层（无节点才能点击）
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/// </summary>
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[Description("点击到最里层（无节点才能点击）"), Category("行为"), DefaultValue(false)]
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public bool ClickEnd { get; set; } = false;
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/// <summary>
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/// 焦点时展开下拉
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/// </summary>
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[Description("焦点时展开下拉"), Category("行为"), DefaultValue(true)]
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public bool FocusExpandDropdown { get; set; } = true;
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/// <summary>
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/// 点击切换下拉
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/// </summary>
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[Description("点击切换下拉"), Category("行为"), DefaultValue(true)]
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public bool ClickSwitchDropdown { get; set; } = true;
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#region 数据
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BaseCollection? items;
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/// <summary>
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/// 数据
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/// </summary>
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[DesignerSerializationVisibility(DesignerSerializationVisibility.Content)]
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[Editor("System.Windows.Forms.Design.ListControlStringCollectionEditor", typeof(UITypeEditor))]
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[Description("集合"), Category("数据")]
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public BaseCollection Items
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{
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get
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{
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items ??= new BaseCollection();
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return items;
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}
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set => items = value;
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}
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#region 操作值
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/// <summary>
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/// 选中序号
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/// </summary>
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[Description("选中序号"), Category("数据"), DefaultValue(-1)]
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public int SelectedIndex
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{
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get => selectedIndex;
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set
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{
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if (selectedIndex == value) return;
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if (items == null || items.Count == 0 || value == -1) ChangeValueNULL();
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else
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{
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var obj = items[value];
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if (obj == null) return;
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ChangeValue(value, obj);
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}
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if (_list) Invalidate();
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}
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}
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/// <summary>
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/// 选中值
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/// </summary>
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[Browsable(false)]
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[Description("选中值"), Category("数据"), DefaultValue(null)]
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public object? SelectedValue
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{
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get => selectedValue;
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set
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{
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if (selectedValue == value) return;
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if (value == null || items == null || items.Count == 0) ChangeValueNULL();
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else SetChangeValue(items, value);
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if (_list) Invalidate();
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}
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}
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int selectedIndexX = -1;
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int selectedIndex = -1;
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object? selectedValue = null;
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void ChangeValueNULL()
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{
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Text = "";
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selectedValue = null;
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selectedIndex = -1;
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SelectedValueChanged?.Invoke(this, new ObjectNEventArgs(selectedValue));
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SelectedIndexChanged?.Invoke(this, new IntEventArgs(selectedIndex));
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}
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void ChangeValue(int value, object? obj)
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{
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selectedIndex = value;
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if (obj is SelectItem it)
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{
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selectedValue = it.Tag;
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Text = it.Text;
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}
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else
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{
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selectedValue = obj;
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if (obj == null) Text = "";
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else Text = obj.ToString() ?? "";
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}
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SelectedValueChanged?.Invoke(this, new ObjectNEventArgs(selectedValue));
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SelectedIndexChanged?.Invoke(this, new IntEventArgs(selectedIndex));
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}
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void SetChangeValue(BaseCollection items, object val)
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{
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for (var i = 0; i < items.Count; i++)
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{
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var item = items[i];
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if (val.Equals(item))
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{
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ChangeValue(i, item);
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return;
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}
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else if (item is SelectItem it && it.Tag.Equals(val))
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{
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ChangeValue(i, item);
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return;
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}
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else if (item is GroupSelectItem group && group.Sub != null && group.Sub.Count > 0)
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{
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foreach (var sub in group.Sub)
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{
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if (val.Equals(sub))
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{
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ChangeValue(i, sub);
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return;
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}
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else if (sub is SelectItem it2 && it2.Tag.Equals(val))
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{
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ChangeValue(i, sub);
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return;
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}
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}
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}
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}
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ChangeValue(items.IndexOf(val), val);
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}
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void ChangeValue(int x, int y, object obj)
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{
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selectedIndexX = x;
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selectedIndex = y;
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if (obj is SelectItem it)
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{
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selectedValue = it.Tag;
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Text = it.Text;
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}
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else
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{
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selectedValue = obj;
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Text = obj.ToString() ?? "";
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}
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SelectedValueChanged?.Invoke(this, new ObjectNEventArgs(selectedValue));
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SelectedIndexsChanged?.Invoke(this, new IntXYEventArgs(selectedIndexX, selectedIndex));
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}
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internal void DropDownChange(int i)
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{
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selectedIndexX = 0;
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if (items == null || items.Count == 0) ChangeValueNULL();
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else ChangeValue(i, items[i]);
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TextFocus = false;
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select_x = 0;
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subForm = null;
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}
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internal bool DropDownChange()
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{
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return SelectedIndexsChanged == null;
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}
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internal void DropDownChange(int x, int y, object value)
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{
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ChangeValue(x, y, value);
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TextFocus = false;
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select_x = 0;
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subForm = null;
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}
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#endregion
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/// <summary>
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/// SelectedIndex 属性值更改时发生
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/// </summary>
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[Description("SelectedIndex 属性值更改时发生"), Category("行为")]
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public event IntEventHandler? SelectedIndexChanged = null;
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/// <summary>
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/// 多层树结构更改时发生
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/// </summary>
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[Description("多层树结构更改时发生"), Category("行为")]
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public event IntXYEventHandler? SelectedIndexsChanged = null;
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/// <summary>
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/// SelectedValue 属性值更改时发生
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/// </summary>
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[Description("SelectedValue 属性值更改时发生"), Category("行为")]
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public event ObjectNEventHandler? SelectedValueChanged = null;
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public delegate IList<object>? FilterEventHandler(object sender, string value);
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/// <summary>
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/// 控制筛选 Text更改时发生
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/// </summary>
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[Description("控制筛选 Text更改时发生"), Category("行为")]
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public event FilterEventHandler? FilterChanged = null;
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string filtertext = "";
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protected override void OnTextChanged(EventArgs e)
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{
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base.OnTextChanged(e);
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if (HasFocus)
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{
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filtertext = Text;
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if (FilterChanged == null)
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{
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TextFocus = true;
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if (textFocus) subForm?.TextChange(Text);
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}
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else
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{
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string temp = filtertext;
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ITask.Run(() =>
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{
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var list = FilterChanged(this, temp);
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if (filtertext == temp)
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{
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Items.Clear();
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if (list == null || list.Count == 0) subForm?.IClose();
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else
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{
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Items.AddRange(list);
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if (subForm == null) ShowLayeredForm(list);
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else subForm.TextChange(Text, list);
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}
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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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#endregion
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#region 渲染
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#region 自带图标
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bool showicon = true;
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/// <summary>
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/// 是否显示图标
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/// </summary>
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[Description("是否显示图标"), Category("外观"), DefaultValue(true)]
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public bool ShowIcon
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{
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get => showicon;
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set
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{
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if (showicon == value) return;
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showicon = value;
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CalculateRect();
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Invalidate();
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}
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}
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public override bool HasSuffix
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{
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get => showicon;
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}
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protected override void PaintRIcon(Graphics g, Rectangle rect_r)
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{
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if (showicon)
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{
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using (var pen = new Pen(Style.Db.TextQuaternary, 2F))
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{
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pen.StartCap = pen.EndCap = LineCap.Round;
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g.DrawLines(pen, rect_r.TriangleLines(ArrowProg));
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}
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}
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}
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#endregion
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#endregion
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#region 动画
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LayeredFormSelectDown? subForm = null;
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public ILayeredForm? SubForm() => subForm;
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ITask? ThreadExpand = null;
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float ArrowProg = -1F;
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bool expand = false;
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bool Expand
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{
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get => expand;
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set
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{
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if (expand == value) return;
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expand = value;
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if (Config.Animation)
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{
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ThreadExpand?.Dispose();
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var t = Animation.TotalFrames(10, 100);
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if (value)
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{
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ThreadExpand = new ITask((i) =>
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{
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ArrowProg = Animation.Animate(i, t, 2F, AnimationType.Ball) - 1F;
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Invalidate();
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return true;
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}, 10, t, () =>
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{
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ArrowProg = 1;
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Invalidate();
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});
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}
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else
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{
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ThreadExpand = new ITask((i) =>
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{
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ArrowProg = -(Animation.Animate(i, t, 2F, AnimationType.Ball) - 1F);
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Invalidate();
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return true;
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}, 10, t, () =>
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{
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ArrowProg = -1;
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Invalidate();
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});
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}
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}
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else ArrowProg = value ? 1F : -1F;
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}
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}
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internal int select_x = 0;
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#endregion
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#region 焦点
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bool textFocus = false;
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bool TextFocus
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{
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get => textFocus;
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set
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{
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if (textFocus != value)
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{
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textFocus = value;
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subForm?.IClose();
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}
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if (value)
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{
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if (!ReadOnly && items != null && items.Count > 0)
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{
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if (subForm == null)
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{
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var objs = new List<object>(items.Count);
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foreach (var it in items) objs.Add(it);
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ShowLayeredForm(objs);
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}
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}
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else { textFocus = false; return; }
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}
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else filtertext = "";
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}
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}
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void ShowLayeredForm(IList<object> list)
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{
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if (InvokeRequired)
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{
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BeginInvoke(new Action(() => { ShowLayeredForm(list); }));
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return;
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}
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Expand = true;
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subForm = new LayeredFormSelectDown(this, list, filtertext);
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subForm.Disposed += (a, b) =>
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{
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select_x = 0;
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subForm = null;
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Expand = false;
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TextFocus = false;
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};
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subForm.Show(this);
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}
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protected override void OnGotFocus(EventArgs e)
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{
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base.OnGotFocus(e);
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if (ReadShowCaret) return;
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if (FocusExpandDropdown) TextFocus = true;
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}
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protected override void OnLostFocus(EventArgs e)
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{
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base.OnLostFocus(e);
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TextFocus = false;
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}
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#endregion
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#region 鼠标
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protected override void OnClearValue()
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{
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if (selectedIndex > -1 || selectedValue != null || !isempty)
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{
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ChangeValueNULL();
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Invalidate();
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}
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}
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protected override void OnFocusClick(bool SetFocus)
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{
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if (_list) TextFocus = !textFocus;
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else if (ClickSwitchDropdown)
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{
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if (SetFocus) return;
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TextFocus = !textFocus;
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}
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else
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{
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if (HasFocus)
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{
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if (textFocus) return;
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TextFocus = !textFocus;
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}
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else Focus();
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}
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}
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#endregion
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}
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public class DividerSelectItem : ISelectItem
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{
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}
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public class SelectItem : ISelectItem
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{
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public SelectItem(int online, Image? ico, string text, object tag) : this(text, tag)
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{
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Online = online;
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Icon = ico;
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}
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public SelectItem(int online, Image? ico, object tag) : this(tag)
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{
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Online = online;
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Icon = ico;
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}
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public SelectItem(Image? ico, string text, object tag) : this(text, tag)
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{
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Icon = ico;
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}
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public SelectItem(Image? ico, string text) : this(text)
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{
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Icon = ico;
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}
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public SelectItem(Image? ico, object tag) : this(tag)
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{
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Icon = ico;
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}
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public SelectItem(int online, string text, object tag) : this(text, tag)
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{
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Online = online;
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}
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public SelectItem(int online, object tag) : this(tag)
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{
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Online = online;
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}
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public SelectItem(object tag)
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{
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Text = tag.ToString() ?? string.Empty;
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Tag = tag;
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}
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public SelectItem(string text, object tag)
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{
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Text = text;
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Tag = tag;
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}
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/// <summary>
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/// 在线状态
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/// </summary>
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public int? Online { get; set; }
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/// <summary>
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/// 在线自定义颜色
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/// </summary>
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public Color? OnlineCustom { get; set; }
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public Image? Icon { get; set; }
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public string? IconSvg { get; set; }
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public string Text { get; set; }
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/// <summary>
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/// 是否启用
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/// </summary>
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public bool Enable { get; set; } = true;
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/// <summary>
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/// 子文本
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/// </summary>
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public string? SubText { get; set; }
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/// <summary>
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/// 子选项
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/// </summary>
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public IList<object>? Sub { get; set; }
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public object Tag { get; set; }
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#region 标签
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/// <summary>
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/// 标签文字颜色
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/// </summary>
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public Color? TagFore { get; set; }
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/// <summary>
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/// 标签背景颜色
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/// </summary>
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public Color? TagBack { get; set; }
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/// <summary>
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/// 标签背景渐变色
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/// </summary>
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public string? TagBackExtend { get; set; }
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#endregion
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public override string ToString() => Text;
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}
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public class GroupSelectItem : ISelectItem
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{
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public GroupSelectItem(string title)
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{
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Title = title;
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}
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public string Title { get; set; }
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/// <summary>
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/// 子选项
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/// </summary>
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public IList<object>? Sub { get; set; }
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public object? Tag { get; set; }
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public override string ToString()
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{
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return Title;
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}
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}
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public class ISelectItem { }
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internal class ObjectItem
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{
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public ObjectItem(object _val, int _i, Rectangle rect, Rectangle rect_text)
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{
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Show = true;
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Val = _val;
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Text = _val.ToString() ?? string.Empty;
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PY = Pinyin.GetPinyin(Text).ToLower();
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PYS = Pinyin.GetInitials(Text).ToLower();
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ID = _i;
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SetRect(rect, rect_text);
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}
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public ObjectItem(GroupSelectItem _val, int _i, Rectangle rect, Rectangle rect_text)
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{
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Show = Group = true;
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Val = _val;
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Text = _val.Title;
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PY = Pinyin.GetPinyin(Text).ToLower();
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PYS = Pinyin.GetInitials(Text).ToLower();
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ID = _i;
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SetRect(rect, rect_text);
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}
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public ObjectItem(SelectItem _val, int _i, Rectangle rect, Rectangle rect_text, int gap_x, int gap_x2, int gap_y, int gap_y2)
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{
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Sub = _val.Sub;
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if (Sub != null && Sub.Count > 0) has_sub = true;
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Show = true;
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Val = _val;
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Online = _val.Online;
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OnlineCustom = _val.OnlineCustom;
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Icon = _val.Icon;
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IconSvg = _val.IconSvg;
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Text = _val.Text;
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SubText = _val.SubText;
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Enable = _val.Enable;
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PY = Pinyin.GetPinyin(_val.Text + _val.SubText).ToLower();
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PYS = Pinyin.GetInitials(_val.Text + _val.SubText).ToLower();
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ID = _i;
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SetRect(rect, rect_text, gap_x, gap_x2, gap_y, gap_y2);
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}
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public ObjectItem(Rectangle rect)
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{
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ID = -1;
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Rect = rect;
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Show = true;
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}
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public object Val { get; set; }
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/// <summary>
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/// 是否启用
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/// </summary>
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public bool Enable { get; set; } = true;
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/// <summary>
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/// 子选项
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/// </summary>
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public IList<object>? Sub { get; set; }
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internal bool has_sub { get; set; }
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/// <summary>
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/// 在线状态
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/// </summary>
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public int? Online { get; set; }
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/// <summary>
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/// 在线自定义颜色
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/// </summary>
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public Color? OnlineCustom { get; set; }
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public Image? Icon { get; set; }
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public string? IconSvg { get; set; }
|
|
/// <summary>
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/// 是否包含图标
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/// </summary>
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public bool HasIcon
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{
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get => IconSvg != null || Icon != null;
|
}
|
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public Rectangle RectIcon { get; set; }
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public Rectangle RectOnline { get; set; }
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string PY { get; set; }
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string PYS { get; set; }
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public string? SubText { get; set; }
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public string Text { get; set; }
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public bool Contains(string val)
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{
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return Text.Contains(val) || PY.Contains(val) || PYS.Contains(val);
|
}
|
|
public int ID { get; set; }
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|
public bool Hover { get; set; }
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public bool Show { get; set; }
|
internal bool Group { get; set; }
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internal bool NoIndex { get; set; }
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|
internal bool ShowAndID => ID == -1 || !Show;
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|
internal Rectangle arr_rect { get; set; }
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|
public Rectangle Rect { get; set; }
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|
internal void SetRect(Rectangle rect, Rectangle rect_text, int gap_x, int gap_x2, int gap_y, int gap_y2)
|
{
|
Rect = rect;
|
if (Val is SelectItem)
|
{
|
if (Online > -1 || HasIcon)
|
{
|
if (Online > -1 && HasIcon)
|
{
|
RectOnline = new Rectangle(rect_text.X - gap_y / 2, rect_text.Y + (rect_text.Height - gap_y) / 2, gap_y, gap_y);
|
RectIcon = new Rectangle(rect_text.X + gap_y2, rect_text.Y, rect_text.Height, rect_text.Height);
|
RectText = new Rectangle(rect_text.X + gap_y + gap_y2 + rect_text.Height, rect_text.Y, rect_text.Width - rect_text.Height - gap_y - gap_y2, rect_text.Height);
|
}
|
else if (Online > -1)
|
{
|
RectOnline = new Rectangle(rect_text.X - gap_y / 2, rect_text.Y + (rect_text.Height - gap_y) / 2, gap_y, gap_y);
|
RectText = new Rectangle(rect_text.X + gap_y2, rect_text.Y, rect_text.Width - gap_y2, rect_text.Height);
|
}
|
else
|
{
|
RectIcon = new Rectangle(rect.X + gap_x / 2, rect_text.Y, rect_text.Height, rect_text.Height);
|
RectText = new Rectangle(rect_text.X + rect_text.Height, rect_text.Y, rect_text.Width - rect_text.Height, rect_text.Height);
|
}
|
}
|
else RectText = rect_text;
|
arr_rect = new Rectangle(Rect.Right - Rect.Height - gap_y, Rect.Y, Rect.Height, Rect.Height);
|
}
|
else RectText = rect_text;
|
}
|
|
internal void SetRect(Rectangle rect, Rectangle rect_text)
|
{
|
Rect = rect;
|
RectText = rect_text;
|
}
|
|
internal bool SetHover(bool val)
|
{
|
bool change = false;
|
if (val)
|
{
|
if (!Hover) change = true;
|
Hover = true;
|
}
|
else
|
{
|
if (Hover) change = true;
|
Hover = false;
|
}
|
return change;
|
}
|
internal bool Contains(Point point, int x, int y, out bool change)
|
{
|
if (ID > -1 && Rect.Contains(point.X + x, point.Y + y))
|
{
|
change = SetHover(true);
|
return true;
|
}
|
else
|
{
|
change = SetHover(false);
|
return false;
|
}
|
}
|
|
public RectangleF RectText { get; set; }
|
}
|
}
|
