// 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 多选器
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/// </summary>
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/// <remarks>下拉多选器。</remarks>
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[Description("Select 多选器")]
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[ToolboxItem(true)]
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[DefaultEvent("SelectedValueChanged")]
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public class SelectMultiple : 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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bool canDelete = true;
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/// <summary>
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/// 是否可以删除
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/// </summary>
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[Description("是否可以删除"), Category("交互"), DefaultValue(true)]
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public bool CanDelete
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{
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get => canDelete;
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set
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{
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if (canDelete == value) return;
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canDelete = value;
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CalculateRect();
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Invalidate();
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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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/// 最大选中数量
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/// </summary>
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[Description("最大选中数量"), Category("行为"), DefaultValue(0)]
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public int MaxChoiceCount { get; set; }
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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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/// 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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#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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protected override bool HasValue => selectedValue.Length > 0;
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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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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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selectedValue = value;
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if (value == null || items == null || items.Count == 0)
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{
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ClearSelect();
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SelectedValueChanged?.Invoke(this, new ObjectsEventArgs(selectedValue));
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return;
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}
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CalculateRect();
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Invalidate();
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SelectedValueChanged?.Invoke(this, new ObjectsEventArgs(selectedValue));
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}
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}
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protected override bool ShowPlaceholder => selectedValue.Length == 0;
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/// <summary>
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/// 全选项目
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/// </summary>
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public void SelectAllItems()
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{
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if (items == null) return;
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var selecteds = new List<object>(items.Count);
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foreach (object it in items)
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{
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if (it is DividerSelectItem) { }
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else selecteds.Add(it);
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}
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selectedValue = selecteds.ToArray();
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CalculateRect();
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SetCaretPostion();
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if (subForm == null) return;
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subForm.selectedValue = selecteds;
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subForm.Print();
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}
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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 ObjectsEventHandler? SelectedValueChanged = 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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TextFocus = true;
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if (textFocus) subForm?.TextChange(Text);
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}
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}
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object[] selectedValue = new object[0];
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/// <summary>
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/// 清空选中
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/// </summary>
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public void ClearSelect()
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{
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Text = "";
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selectedValue = new object[0];
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CalculateRect();
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SetCaretPostion();
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Invalidate();
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if (subForm == null) return;
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subForm.selectedValue = new List<object>(0);
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subForm.Print();
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}
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protected override void IBackSpaceKey()
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{
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if (selectedValue.Length > 0)
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{
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var tmp = new List<object>(selectedValue.Length);
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tmp.AddRange(selectedValue);
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tmp.RemoveAt(tmp.Count - 1);
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SelectedValue = tmp.ToArray();
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if (subForm == null) return;
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subForm.selectedValue = new List<object>(selectedValue.Length);
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subForm.selectedValue.AddRange(selectedValue);
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subForm.Print();
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}
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}
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#endregion
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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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Rectangle[] rect_lefts = new Rectangle[0];
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Rectangle[] rect_left_txts = new Rectangle[0];
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Rectangle[] rect_left_dels = new Rectangle[0];
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SelectItem?[] style_left = new SelectItem?[0];
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protected override bool HasLeft() => selectedValue.Length > 0;
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protected override int UseLeft(Rectangle rect_read, bool delgap)
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{
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if (selectedValue.Length > 0)
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{
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var style_dir = new Dictionary<object, SelectItem>(selectedValue.Length);
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var enable_dir = new List<object>(selectedValue.Length);
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if (items != null && items.Count > 0)
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{
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foreach (var it in items)
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{
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if (it is SelectItem item)
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{
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style_dir.Add(item.Tag, item);
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if (!item.Enable) enable_dir.Add(item.Tag);
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}
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}
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}
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return Helper.GDI(g =>
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{
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int height = g.MeasureString(Config.NullText, Font).Size().Height, del_icon = (int)(height * 0.4);
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var _style_left = new List<SelectItem?>(selectedValue.Length);
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List<Rectangle> _rect_left = new List<Rectangle>(selectedValue.Length), _rect_left_txt = new List<Rectangle>(selectedValue.Length), _rect_left_del = new List<Rectangle>(selectedValue.Length);
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int y = (rect_read.Height - height) / 2, use = delgap ? 0 : y, gap = (int)(2 * Config.Dpi);
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for (int i = 0; i < selectedValue.Length; i++)
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{
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var it = selectedValue[i];
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string? showtext;
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SelectItem? style = null;
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if (style_dir.TryGetValue(it, out var find)) { style = find; showtext = find.Text; }
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else showtext = it.ToString();
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var size = g.MeasureString(showtext, Font).Size();
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var size2 = g.MeasureString("+" + (selectedValue.Length - i), Font).Size();
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int use_base = use + size.Width + height + gap;
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if (use_base + (size2.Width + gap) > rect_read.Width)
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{
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//超出
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_rect_left_txt.Add(new Rectangle(rect_read.X + use, rect_read.Y + y, size2.Width, height));
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style_left = _style_left.ToArray();
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rect_left_txts = _rect_left_txt.ToArray();
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rect_left_dels = _rect_left_del.ToArray();
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rect_lefts = _rect_left.ToArray();
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if (_rect_left_txt.Count == 1) return size2.Width + gap;
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return use + size2.Width + gap;
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}
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_style_left.Add(style);
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if (enable_dir.Contains(it) || !canDelete)
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{
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var rect = new Rectangle(rect_read.X + use, rect_read.Y + y, size.Width, height);
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_rect_left_txt.Add(rect);
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_rect_left_del.Add(new Rectangle(-10, -10, 0, 0));
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_rect_left.Add(rect);
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use += size.Width + gap;
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}
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else
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{
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var rect = new Rectangle(rect_read.X + use, rect_read.Y + y, size.Width, height);
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_rect_left_txt.Add(rect);
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int gapdelxy = (height - del_icon) / 2;
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_rect_left_del.Add(new Rectangle(rect.Right + gapdelxy / 2, rect.Y + gapdelxy, del_icon, del_icon));
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rect.Width += height;
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_rect_left.Add(rect);
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use += size.Width + height + gap;
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}
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}
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style_left = _style_left.ToArray();
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rect_left_txts = _rect_left_txt.ToArray();
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rect_left_dels = _rect_left_del.ToArray();
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rect_lefts = _rect_left.ToArray();
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return use - (delgap ? 0 : gap);
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});
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}
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return 0;
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}
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protected override void PaintOtherBor(Graphics g, RectangleF rect_read, float radius, Color back, Color borderColor, Color borderActive)
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{
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if (selectedValue.Length > 0 && style_left.Length == rect_lefts.Length)
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{
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using (var brush = new SolidBrush(Style.Db.TagDefaultColor))
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{
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if (rect_lefts.Length > 0)
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{
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for (int i = 0; i < rect_lefts.Length; i++)
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{
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var it = selectedValue[i];
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var style = style_left[i];
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using (var path = rect_lefts[i].RoundPath(radius))
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{
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if (style == null)
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{
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using (var brushbg = new SolidBrush(Style.Db.TagDefaultBg))
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{
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g.FillPath(brushbg, path);
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}
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var rect_del = rect_left_dels[i];
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if (rect_del.Width > 0 && rect_del.Height > 0) g.PaintIconClose(rect_del, Style.Db.TagDefaultColor);
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g.DrawStr(it.ToString(), Font, brush, rect_left_txts[i], sf_center);
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}
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else
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{
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using (var brushbg = style.TagBackExtend.BrushEx(rect_lefts[i], style.TagBack ?? Style.Db.TagDefaultBg))
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{
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g.FillPath(brushbg, path);
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}
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if (style.TagFore.HasValue)
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{
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var rect_del = rect_left_dels[i];
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if (rect_del.Width > 0 && rect_del.Height > 0) g.PaintIconClose(rect_del, style.TagFore.Value);
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using (var brushf = new SolidBrush(style.TagFore.Value))
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{
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g.DrawStr(style.Text, Font, brushf, rect_left_txts[i], sf_center);
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}
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}
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else
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{
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var rect_del = rect_left_dels[i];
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if (rect_del.Width > 0 && rect_del.Height > 0) g.PaintIconClose(rect_del, Style.Db.TagDefaultColor);
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g.DrawStr(style.Text, Font, brush, rect_left_txts[i], sf_center);
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}
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}
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}
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}
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}
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if (rect_lefts.Length != selectedValue.Length)
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{
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g.DrawStr("+" + (selectedValue.Length - rect_lefts.Length), Font, brush, rect_left_txts[rect_left_txts.Length - 1], sf_center);
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}
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}
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}
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}
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int select_del = -1;
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protected override bool IMouseDown(Point e)
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{
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select_del = -1;
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if (selectedValue.Length > 0 && rect_left_dels.Length > 0)
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{
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int len = selectedValue.Length > rect_left_dels.Length ? rect_left_dels.Length : selectedValue.Length;
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for (int i = 0; i < len; i++)
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{
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if (rect_left_dels[i].Contains(e)) { select_del = i; return true; }
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}
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}
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return false;
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}
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protected override bool IMouseMove(Point e)
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{
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if (selectedValue.Length > 0 && rect_left_dels.Length > 0)
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{
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int len = selectedValue.Length > rect_left_dels.Length ? rect_left_dels.Length : selectedValue.Length;
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for (int i = 0; i < len; i++)
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{
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if (rect_left_dels[i].Contains(e)) return true;
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}
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}
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return false;
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}
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protected override bool IMouseUp(Point e)
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{
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if (select_del > -1)
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{
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if (rect_left_dels[select_del].Contains(e))
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{
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var tmp = new List<object>(selectedValue.Length);
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tmp.AddRange(selectedValue);
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tmp.RemoveAt(select_del);
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SelectedValue = tmp.ToArray();
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if (subForm == null) return true;
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subForm.selectedValue = new List<object>(selectedValue.Length);
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subForm.selectedValue.AddRange(selectedValue);
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subForm.Print();
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}
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select_del = -1;
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return true;
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}
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select_del = -1;
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return false;
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}
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#endregion
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#region 动画
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LayeredFormSelectMultiple? 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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#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) return;
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textFocus = value;
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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)
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{
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objs.Add(it);
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}
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Expand = true;
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subForm = new LayeredFormSelectMultiple(this, ReadRectangle, objs, filtertext);
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subForm.Disposed += (a, b) =>
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{
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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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}
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else
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{
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subForm?.IClose();
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textFocus = false;
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}
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}
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else
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{
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subForm?.IClose();
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filtertext = "";
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}
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}
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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 (selectedValue.Length > 0) ClearSelect();
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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
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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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}
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#endregion
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}
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}
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