907 lines
29 KiB
C#
907 lines
29 KiB
C#
/******************************************************************************
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* SunnyUI 开源控件库、工具类库、扩展类库、多页面开发框架。
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* CopyRight (C) 2012-2023 ShenYongHua(沈永华).
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* QQ群：56829229 QQ：17612584 EMail：SunnyUI@QQ.Com
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*
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* Blog: https://www.cnblogs.com/yhuse
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* Gitee: https://gitee.com/yhuse/SunnyUI
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* GitHub: https://github.com/yhuse/SunnyUI
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*
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* SunnyUI.dll can be used for free under the GPL-3.0 license.
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* If you use this code, please keep this note.
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* 如果您使用此代码，请保留此说明。
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******************************************************************************
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* 文件名称: UIImageListBox.cs
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* 文件说明: 图片列表框
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* 当前版本: V3.1
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* 创建日期: 2020-01-01
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*
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* 2020-01-01: V2.2.0 增加文件说明
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* 2020-04-25: V2.2.4 更新主题配置类
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* 2020-05-21: V2.2.5 增加鼠标滑过高亮
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* 2021-08-07: V3.0.5 从文件载入图片，并且解除占用
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* 2022-03-19: V3.1.1 重构主题配色
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* 2022-08-30: V3.2.3 增加了一些事件
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* 2022-09-05: V3.2.3 修复Click，DoubleClick事件
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* 2022-11-03: V3.2.6 增加了可设置垂直滚动条宽度的属性
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* 2023-05-13: V3.3.6 重构DrawString函数
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******************************************************************************/
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using System;
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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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using System.IO;
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using System.Windows.Forms;
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namespace Sunny.UI
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{
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[DefaultEvent("ItemClick")]
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public sealed partial class UIImageListBox : UIPanel, IToolTip
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{
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private readonly ImageListBox listbox = new ImageListBox();
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private readonly UIScrollBar bar = new UIScrollBar();
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public UIImageListBox()
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{
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SetStyleFlags(true, false);
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ShowText = false;
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Padding = new Padding(2);
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bar.ValueChanged += Bar_ValueChanged;
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bar.Width = SystemInformation.VerticalScrollBarWidth + 2;
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bar.Parent = this;
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bar.Dock = DockStyle.None;
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bar.Style = UIStyle.Custom;
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bar.Visible = false;
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listbox.Parent = this;
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listbox.Dock = DockStyle.Fill;
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listbox.Show();
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listbox.Bar = bar;
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listbox.SelectedIndexChanged += Listbox_SelectedIndexChanged;
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listbox.SelectedValueChanged += Listbox_SelectedValueChanged;
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listbox.Click += Listbox_Click;
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listbox.DoubleClick += Listbox_DoubleClick;
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listbox.BeforeDrawItem += Listbox_BeforeDrawItem;
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listbox.MouseDown += Listbox_MouseDown;
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listbox.MouseUp += Listbox_MouseUp;
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listbox.MouseMove += Listbox_MouseMove;
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listbox.MouseClick += Listbox_MouseClick;
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listbox.MouseDoubleClick += Listbox_MouseDoubleClick;
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listbox.KeyPress += Listbox_KeyPress;
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listbox.KeyDown += Listbox_KeyDown;
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listbox.KeyUp += Listbox_KeyUp;
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listbox.MouseEnter += Listbox_MouseEnter;
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listbox.MouseLeave += Listbox_MouseLeave;
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listbox.DrawItem += Listbox_DrawItem;
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}
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protected override void Dispose(bool disposing)
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{
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base.Dispose(disposing);
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bar?.Dispose();
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listbox?.Dispose();
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}
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private int scrollBarWidth = 0;
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[DefaultValue(0), Category("SunnyUI"), Description("垂直滚动条宽度，最小为原生滚动条宽度")]
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public int ScrollBarWidth
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{
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get => scrollBarWidth;
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set
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{
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scrollBarWidth = value;
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SetScrollInfo();
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}
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}
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private int scrollBarHandleWidth = 6;
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[DefaultValue(6), Category("SunnyUI"), Description("垂直滚动条滑块宽度，最小为原生滚动条宽度")]
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public int ScrollBarHandleWidth
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{
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get => scrollBarHandleWidth;
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set
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{
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scrollBarHandleWidth = value;
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if (bar != null) bar.FillWidth = value;
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}
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}
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public event DrawItemEventHandler DrawItem;
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public new event EventHandler MouseLeave;
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public new event EventHandler MouseEnter;
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public new event KeyPressEventHandler KeyPress;
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public new event KeyEventHandler KeyDown;
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public new event KeyEventHandler KeyUp;
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public new event MouseEventHandler MouseClick;
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public new event MouseEventHandler MouseDoubleClick;
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protected override void OnContextMenuStripChanged(EventArgs e)
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{
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base.OnContextMenuStripChanged(e);
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if (listbox != null) listbox.ContextMenuStrip = ContextMenuStrip;
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}
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private void Listbox_MouseDoubleClick(object sender, MouseEventArgs e)
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{
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MouseDoubleClick?.Invoke(this, e);
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}
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private void Listbox_DrawItem(object sender, DrawItemEventArgs e)
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{
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DrawItem?.Invoke(sender, e);
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}
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private void Listbox_MouseLeave(object sender, EventArgs e)
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{
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MouseLeave?.Invoke(this, e);
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}
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private void Listbox_MouseEnter(object sender, EventArgs e)
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{
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MouseEnter?.Invoke(this, e);
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}
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private void Listbox_MouseClick(object sender, MouseEventArgs e)
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{
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MouseClick?.Invoke(this, e);
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}
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private void Listbox_KeyUp(object sender, KeyEventArgs e)
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{
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KeyUp?.Invoke(this, e);
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}
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private void Listbox_KeyDown(object sender, KeyEventArgs e)
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{
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KeyDown?.Invoke(this, e);
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}
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private void Listbox_KeyPress(object sender, KeyPressEventArgs e)
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{
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KeyPress?.Invoke(this, e);
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}
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/// <summary>
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/// 需要额外设置ToolTip的控件
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/// </summary>
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/// <returns>控件</returns>
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public Control ExToolTipControl()
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{
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return listbox;
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}
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public int IndexFromPoint(Point p)
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{
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return listbox.IndexFromPoint(p);
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}
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public int IndexFromPoint(int x, int y)
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{
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return listbox.IndexFromPoint(x, y);
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}
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protected override void AfterSetFillColor(Color color)
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{
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base.AfterSetFillColor(color);
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if (listbox != null)
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{
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listbox.BackColor = color;
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}
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}
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private void Listbox_MouseMove(object sender, MouseEventArgs e)
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{
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MouseMove?.Invoke(this, e);
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}
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private void Listbox_MouseUp(object sender, MouseEventArgs e)
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{
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MouseUp?.Invoke(this, e);
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}
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private void Listbox_MouseDown(object sender, MouseEventArgs e)
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{
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MouseDown?.Invoke(this, e);
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}
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public new event MouseEventHandler MouseDown;
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public new event MouseEventHandler MouseUp;
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public new event MouseEventHandler MouseMove;
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/// <summary>
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/// 重载字体变更
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/// </summary>
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/// <param name="e">参数</param>
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protected override void OnFontChanged(EventArgs e)
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{
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base.OnFontChanged(e);
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if (DefaultFontSize < 0 && listbox != null) listbox.Font = this.Font;
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}
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/// <summary>
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/// 重载控件尺寸变更
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/// </summary>
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/// <param name="e">参数</param>
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protected override void OnSizeChanged(EventArgs e)
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{
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base.OnSizeChanged(e);
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SetScrollInfo();
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}
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private void SetScrollInfo()
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{
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bar.Top = 2;
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bar.Height = Height - 4;
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int barWidth = Math.Max(ScrollBarInfo.VerticalScrollBarWidth(), ScrollBarWidth);
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bar.Width = barWidth + 1;
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bar.Left = Width - barWidth - 2;
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}
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private void Listbox_BeforeDrawItem(object sender, ListBox.ObjectCollection items, DrawItemEventArgs e)
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{
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if (Items.Count != LastCount)
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{
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listbox.SetScrollInfo();
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LastCount = Items.Count;
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ItemsCountChange?.Invoke(this, EventArgs.Empty);
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}
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}
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private void Listbox_DoubleClick(object sender, EventArgs e)
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{
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DoubleClick?.Invoke(this, e);
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}
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private void Listbox_Click(object sender, EventArgs e)
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{
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Click?.Invoke(this, e);
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}
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[Browsable(false)]
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public int Count => Items.Count;
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public new event EventHandler Click;
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public new event EventHandler DoubleClick;
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public event EventHandler ItemsCountChange;
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public event EventHandler SelectedIndexChanged;
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public event EventHandler SelectedValueChanged;
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private void Listbox_SelectedValueChanged(object sender, EventArgs e)
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{
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SelectedValueChanged?.Invoke(this, e);
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Text = listbox.SelectedItem?.ToString();
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}
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private void Listbox_SelectedIndexChanged(object sender, EventArgs e)
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{
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SelectedIndexChanged?.Invoke(this, e);
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}
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[DefaultValue(100)]
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[Description("列表项高度"), Category("SunnyUI")]
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public int ItemHeight
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{
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get => listbox.ItemHeight;
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set => listbox.ItemHeight = value;
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}
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[DefaultValue(4)]
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[Description("图片文字间间隔"), Category("SunnyUI")]
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public int ImageInterval
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{
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get => listbox.ImageInterval;
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set => listbox.ImageInterval = value;
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}
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[DefaultValue(true)]
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[Description("显示说明文字"), Category("SunnyUI")]
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public bool ShowDescription
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{
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get => listbox.ShowDescription;
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set => listbox.ShowDescription = value;
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}
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/// <summary>
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/// 设置主题样式
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/// </summary>
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/// <param name="uiColor">主题样式</param>
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public override void SetStyleColor(UIBaseStyle uiColor)
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{
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base.SetStyleColor(uiColor);
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if (bar != null)
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{
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bar.ForeColor = uiColor.ListBarForeColor;
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bar.HoverColor = uiColor.ButtonFillHoverColor;
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bar.PressColor = uiColor.ButtonFillPressColor;
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bar.FillColor = uiColor.ListBarFillColor;
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}
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hoverColor = uiColor.ListItemHoverColor;
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if (listbox != null)
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{
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listbox.HoverColor = hoverColor;
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listbox.SetStyleColor(uiColor);
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listbox.BackColor = uiColor.ListBackColor;
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listbox.ForeColor = uiColor.ListForeColor;
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}
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fillColor = uiColor.ListBackColor;
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}
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private int LastCount;
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private int lastBarValue = -1;
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private void Bar_ValueChanged(object sender, EventArgs e)
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{
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if (listbox != null)
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{
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if (bar.Value != lastBarValue)
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{
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ScrollBarInfo.SetScrollValue(listbox.Handle, bar.Value);
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lastBarValue = bar.Value;
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}
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}
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}
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protected override void OnRadiusChanged(int value)
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{
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base.OnRadiusChanged(value);
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Padding = new Padding(Math.Max(2, value / 2));
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}
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[DesignerSerializationVisibility(DesignerSerializationVisibility.Content)]
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[Localizable(true)]
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[Editor("System.Windows.Forms.Design.ListControlStringCollectionEditor, System.Design, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a", typeof(UITypeEditor))]
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[MergableProperty(false)]
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[Browsable(false)]
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[Description("列表项"), Category("SunnyUI")]
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public ListBox.ObjectCollection Items => listbox.Items;
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/// <summary>
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/// 增加图片
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/// </summary>
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/// <param name="record">图片对象</param>
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public void AddImage(ImageListItem record)
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{
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Items.Add(record);
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}
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/// <summary>
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/// 增加图片
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/// </summary>
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/// <param name="imagePath">图片路径</param>
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/// <param name="description">图片描述</param>
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public void AddImage(string imagePath, string description = "")
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{
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AddImage(new ImageListItem(imagePath, description));
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}
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/// <summary>
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/// 增加图片
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/// </summary>
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/// <param name="image">图片</param>
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/// <param name="description">图片描述</param>
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public void AddImage(Bitmap image, string description = "")
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{
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AddImage(new ImageListItem(image, description));
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}
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public void SelectedFirst()
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{
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listbox.SelectedFirst();
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}
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[DefaultValue(typeof(Color), "80, 160, 255")]
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[Description("选中项背景颜色"), Category("SunnyUI")]
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public Color ItemSelectBackColor
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{
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get => listbox.ItemSelectBackColor;
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set => listbox.ItemSelectBackColor = value;
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}
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[DefaultValue(typeof(Color), "243, 249, 255")]
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[Description("选中项字体颜色"), Category("SunnyUI")]
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public Color ItemSelectForeColor
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{
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get => listbox.ItemSelectForeColor;
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set => listbox.ItemSelectForeColor = value;
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}
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[Browsable(false)]
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[DefaultValue(-1)]
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public int SelectedIndex
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{
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get => listbox.SelectedIndex;
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set => listbox.SelectedIndex = value;
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}
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[Browsable(false)]
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[DefaultValue(null)]
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public ImageListItem SelectedItem
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{
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get => listbox.SelectedItem as ImageListItem;
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set => listbox.SelectedItem = value;
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}
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[Browsable(false)]
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[DefaultValue(null)]
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public object SelectedValue
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{
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get => listbox.SelectedValue;
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set => listbox.SelectedValue = value;
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}
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private Color hoverColor = Color.FromArgb(155, 200, 255);
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[DefaultValue(typeof(Color), "220, 236, 255")]
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[Description("鼠标移上颜色"), Category("SunnyUI")]
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public Color HoverColor
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{
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get => hoverColor;
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set
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{
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hoverColor = value;
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listbox.HoverColor = hoverColor;
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_style = UIStyle.Custom;
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}
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}
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[ToolboxItem(false)]
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private sealed class ImageListBox : ListBox, IStyleInterface
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{
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private UIScrollBar bar;
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/// <summary>
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/// Tag字符串
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/// </summary>
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[DefaultValue(null)]
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[Description("获取或设置包含有关控件的数据的对象字符串"), Category("SunnyUI")]
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public string TagString { get; set; }
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public UIScrollBar Bar
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{
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get => bar;
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set
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{
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bar = value;
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SetScrollInfo();
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}
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}
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private float DefaultFontSize = -1;
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public void SetDPIScale()
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{
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if (!UIDPIScale.NeedSetDPIFont()) return;
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if (DefaultFontSize < 0) DefaultFontSize = this.Font.Size;
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this.SetDPIScaleFont(DefaultFontSize);
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}
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//protected override void WndProc(ref Message m)
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//{
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// if (IsDisposed || Disposing) return;
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// if (IsHandleCreated)
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// {
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// if (m.Msg == Win32.User.WM_ERASEBKGND)
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// {
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// m.Result = IntPtr.Zero;
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// return;
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// }
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// }
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//
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// base.WndProc(ref m);
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//}
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public ImageListBox()
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{
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SetStyle(ControlStyles.AllPaintingInWmPaint, true);
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SetStyle(ControlStyles.DoubleBuffer, true);
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UpdateStyles();
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BorderStyle = BorderStyle.None;
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ForeColor = UIFontColor.Primary;
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IntegralHeight = false;
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ItemHeight = 100;
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DrawMode = DrawMode.OwnerDrawFixed;
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Version = UIGlobal.Version;
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SetScrollInfo();
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}
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/// <summary>
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/// 重载控件尺寸变更
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/// </summary>
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/// <param name="e">参数</param>
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protected override void OnSizeChanged(EventArgs e)
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{
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if (Bar != null && Bar.Visible)
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{
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if (Bar.Value != 0)
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{
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ScrollBarInfo.SetScrollValue(Handle, Bar.Value);
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}
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}
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//SetScrollInfo();
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}
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public void SetScrollInfo()
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{
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if (Bar == null)
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{
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return;
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}
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var si = ScrollBarInfo.GetInfo(Handle);
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if (si.ScrollMax > 0)
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{
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Bar.Maximum = si.ScrollMax;
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Bar.Visible = si.ScrollMax > 0 && si.nMax > 0 && si.nPage > 0;
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Bar.Value = si.nPos;
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}
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else
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{
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Bar.Visible = false;
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}
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}
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protected override void OnMeasureItem(MeasureItemEventArgs e)
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{
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e.ItemHeight += ItemHeight;
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}
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/// <summary>
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/// 自定义主题风格
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/// </summary>
|
||
[DefaultValue(false)]
|
||
[Description("获取或设置可以自定义主题风格"), Category("SunnyUI")]
|
||
public bool StyleCustomMode { get; set; }
|
||
|
||
public string Version { get; }
|
||
|
||
private UIStyle _style = UIStyle.Blue;
|
||
private Color _itemSelectBackColor = UIColor.Blue;
|
||
private Color _itemSelectForeColor = Color.White;
|
||
private int imageInterval = 4;
|
||
private bool showDescription = true;
|
||
|
||
[Browsable(false)]
|
||
public int Count => Items.Count;
|
||
|
||
public void SelectedFirst()
|
||
{
|
||
if (Count > 0 && SelectedIndex < 0)
|
||
{
|
||
SelectedIndex = 0;
|
||
}
|
||
}
|
||
|
||
protected override void OnMouseWheel(MouseEventArgs e)
|
||
{
|
||
base.OnMouseWheel(e);
|
||
|
||
if (Bar != null && Bar.Visible)
|
||
{
|
||
var si = ScrollBarInfo.GetInfo(Handle);
|
||
int temp = Math.Abs(e.Delta / 120);
|
||
if (e.Delta > 10)
|
||
{
|
||
int nposnum = si.nPos - temp * SystemInformation.MouseWheelScrollLines;
|
||
ScrollBarInfo.SetScrollValue(Handle, nposnum >= si.nMin ? nposnum : 0);
|
||
}
|
||
else if (e.Delta < -10)
|
||
{
|
||
int nposnum = si.nPos + temp * SystemInformation.MouseWheelScrollLines;
|
||
ScrollBarInfo.SetScrollValue(Handle, nposnum <= si.ScrollMax ? nposnum : si.ScrollMax);
|
||
}
|
||
}
|
||
|
||
SetScrollInfo();
|
||
}
|
||
|
||
[DefaultValue(4)]
|
||
public int ImageInterval
|
||
{
|
||
get => imageInterval;
|
||
set
|
||
{
|
||
if (imageInterval != value)
|
||
{
|
||
imageInterval = value;
|
||
Invalidate();
|
||
}
|
||
}
|
||
}
|
||
|
||
[DefaultValue(true)]
|
||
public bool ShowDescription
|
||
{
|
||
get => showDescription;
|
||
set
|
||
{
|
||
if (showDescription != value)
|
||
{
|
||
showDescription = value;
|
||
Invalidate();
|
||
}
|
||
}
|
||
}
|
||
|
||
/// <summary>
|
||
/// 主题样式
|
||
/// </summary>
|
||
[DefaultValue(UIStyle.Blue), Description("主题样式"), Category("SunnyUI")]
|
||
public UIStyle Style
|
||
{
|
||
get => _style;
|
||
set => SetStyle(value);
|
||
}
|
||
|
||
public void SetStyle(UIStyle style)
|
||
{
|
||
if (!style.IsCustom())
|
||
{
|
||
SetStyleColor(style.Colors());
|
||
Invalidate();
|
||
}
|
||
|
||
_style = style;
|
||
}
|
||
|
||
public void SetStyleColor(UIBaseStyle uiColor)
|
||
{
|
||
ItemSelectBackColor = uiColor.ListItemSelectBackColor;
|
||
ItemSelectForeColor = uiColor.ListItemSelectForeColor;
|
||
}
|
||
|
||
[Category("SunnyUI"), Description("The border color used to paint the control.")]
|
||
public Color ItemSelectBackColor
|
||
{
|
||
get => _itemSelectBackColor;
|
||
set
|
||
{
|
||
if (_itemSelectBackColor != value)
|
||
{
|
||
_itemSelectBackColor = value;
|
||
_style = UIStyle.Custom;
|
||
if (DesignMode)
|
||
Invalidate();
|
||
}
|
||
}
|
||
}
|
||
|
||
[Category("SunnyUI"), Description("The border color used to paint the control.")]
|
||
public Color ItemSelectForeColor
|
||
{
|
||
get => _itemSelectForeColor;
|
||
set
|
||
{
|
||
if (_itemSelectForeColor != value)
|
||
{
|
||
_itemSelectForeColor = value;
|
||
_style = UIStyle.Custom;
|
||
if (DesignMode)
|
||
Invalidate();
|
||
}
|
||
}
|
||
}
|
||
|
||
/// <summary>
|
||
/// 增加图片
|
||
/// </summary>
|
||
/// <param name="record">图片对象</param>
|
||
public void AddImage(ImageListItem record)
|
||
{
|
||
Items.Add(record);
|
||
}
|
||
|
||
/// <summary>
|
||
/// 增加图片
|
||
/// </summary>
|
||
/// <param name="imagePath">图片路径</param>
|
||
/// <param name="description">图片描述</param>
|
||
public void AddImage(string imagePath, string description = "")
|
||
{
|
||
AddImage(new ImageListItem(imagePath, description));
|
||
}
|
||
|
||
public void AddImage(Bitmap image, string description = "")
|
||
{
|
||
AddImage(new ImageListItem(image, description));
|
||
}
|
||
|
||
public delegate void OnBeforeDrawItem(object sender, ObjectCollection items, DrawItemEventArgs e);
|
||
|
||
public event OnBeforeDrawItem BeforeDrawItem;
|
||
|
||
protected override void OnDrawItem(DrawItemEventArgs e)
|
||
{
|
||
base.OnDrawItem(e);
|
||
BeforeDrawItem?.Invoke(this, Items, e);
|
||
if (Items.Count == 0)
|
||
{
|
||
return;
|
||
}
|
||
|
||
bool otherState = e.State == DrawItemState.Grayed || e.State == DrawItemState.HotLight;
|
||
if (!otherState)
|
||
{
|
||
e.DrawBackground();
|
||
}
|
||
|
||
if (e.Index < 0 || e.Index >= Items.Count)
|
||
{
|
||
return;
|
||
}
|
||
|
||
bool isSelected = (e.State & DrawItemState.Selected) == DrawItemState.Selected;
|
||
Color backColor = isSelected ? ItemSelectBackColor : BackColor;
|
||
Color foreColor = isSelected ? ItemSelectForeColor : ForeColor;
|
||
Rectangle rect = new Rectangle(e.Bounds.X, e.Bounds.Y, e.Bounds.Width - 1, e.Bounds.Height - 1);
|
||
|
||
if (!otherState)
|
||
{
|
||
e.Graphics.FillRectangle(BackColor, e.Bounds);
|
||
e.Graphics.FillRectangle(backColor, rect);
|
||
}
|
||
else
|
||
{
|
||
if (e.State == DrawItemState.Grayed)
|
||
{
|
||
backColor = BackColor;
|
||
foreColor = ForeColor;
|
||
}
|
||
|
||
if (e.State == DrawItemState.HotLight)
|
||
{
|
||
backColor = HoverColor;
|
||
foreColor = ForeColor;
|
||
}
|
||
|
||
e.Graphics.FillRectangle(BackColor, e.Bounds);
|
||
e.Graphics.FillRectangle(backColor, rect);
|
||
}
|
||
|
||
Graphics g = e.Graphics;
|
||
Matrix oldTransform = g.Transform;
|
||
Matrix newTransform = oldTransform.Clone();
|
||
newTransform.Translate(e.Bounds.X, e.Bounds.Y);
|
||
g.Transform = newTransform;
|
||
ImageListItem item = (ImageListItem)Items[e.Index];
|
||
Size sf = TextRenderer.MeasureText("ImageListBox", Font);
|
||
int thumbnailSize = ShowDescription ? ((int)(ItemHeight - ImageInterval - sf.Height)) : (ItemHeight - ImageInterval * 2);
|
||
|
||
if (item.Image != null)
|
||
{
|
||
if (item.Image.Width <= thumbnailSize && item.Image.Height <= thumbnailSize)
|
||
{
|
||
g.DrawImage(item.Image, new Rectangle(ImageInterval, ImageInterval, item.Image.Width, item.Image.Height));
|
||
}
|
||
else
|
||
{
|
||
float scale = thumbnailSize * 1.0f / item.Image.Height;
|
||
g.DrawImage(item.Image, new Rectangle(ImageInterval, ImageInterval, (int)(item.Image.Width * scale), (int)(item.Image.Height * scale)));
|
||
}
|
||
}
|
||
|
||
if (ShowDescription && !string.IsNullOrEmpty(item.Description))
|
||
{
|
||
g.DrawString(item.Description, e.Font, foreColor, new Rectangle(ImageInterval, e.Bounds.Y + thumbnailSize, e.Bounds.Width, e.Bounds.Height), ContentAlignment.TopLeft);
|
||
}
|
||
|
||
g.Transform = oldTransform;
|
||
}
|
||
|
||
private Color hoverColor = Color.FromArgb(155, 200, 255);
|
||
|
||
[DefaultValue(typeof(Color), "155, 200, 255")]
|
||
public Color HoverColor
|
||
{
|
||
get => hoverColor;
|
||
set
|
||
{
|
||
hoverColor = value;
|
||
_style = UIStyle.Custom;
|
||
}
|
||
}
|
||
|
||
private int lastIndex = -1;
|
||
private int mouseIndex = -1;
|
||
|
||
[Browsable(false)]
|
||
public int MouseIndex
|
||
{
|
||
get => mouseIndex;
|
||
set
|
||
{
|
||
if (mouseIndex != value)
|
||
{
|
||
if (lastIndex >= 0 && lastIndex != SelectedIndex)
|
||
{
|
||
OnDrawItem(new DrawItemEventArgs(this.CreateGraphics(), Font, GetItemRectangle(lastIndex), lastIndex, DrawItemState.Grayed));
|
||
}
|
||
|
||
mouseIndex = value;
|
||
if (mouseIndex >= 0 && mouseIndex != SelectedIndex)
|
||
{
|
||
OnDrawItem(new DrawItemEventArgs(this.CreateGraphics(), Font, GetItemRectangle(value), value, DrawItemState.HotLight));
|
||
}
|
||
|
||
lastIndex = mouseIndex;
|
||
}
|
||
}
|
||
}
|
||
|
||
/// <summary>
|
||
/// 重载鼠标移动事件
|
||
/// </summary>
|
||
/// <param name="e">鼠标参数</param>
|
||
protected override void OnMouseMove(MouseEventArgs e)
|
||
{
|
||
base.OnMouseMove(e);
|
||
MouseIndex = IndexFromPoint(e.Location);
|
||
}
|
||
|
||
/// <summary>
|
||
/// 重载鼠标离开事件
|
||
/// </summary>
|
||
/// <param name="e">鼠标参数</param>
|
||
protected override void OnMouseLeave(EventArgs e)
|
||
{
|
||
base.OnMouseLeave(e);
|
||
MouseIndex = -1;
|
||
}
|
||
}
|
||
|
||
public class ImageListItem : IDisposable
|
||
{
|
||
public string ImagePath { get; private set; }
|
||
|
||
public string Description { get; set; }
|
||
|
||
public Image Image { get; private set; }
|
||
|
||
public ImageListItem(string imagePath, string description = "")
|
||
{
|
||
if (File.Exists(imagePath))
|
||
{
|
||
ImagePath = imagePath;
|
||
Image = ImageEx.FromFile(imagePath);
|
||
}
|
||
|
||
Description = description;
|
||
}
|
||
|
||
public ImageListItem(Bitmap image, string description = "")
|
||
{
|
||
ImagePath = "";
|
||
Image = new Bitmap(image);
|
||
Description = description;
|
||
}
|
||
|
||
public override string ToString()
|
||
{
|
||
return Description + ", " + ImagePath;
|
||
}
|
||
|
||
/// <summary>
|
||
/// 析构函数
|
||
/// </summary>
|
||
public void Dispose()
|
||
{
|
||
Image?.Dispose();
|
||
}
|
||
}
|
||
}
|
||
} |