SunnyUI/SunnyUI/Controls/UIContextMenuStrip.cs

/******************************************************************************
 * SunnyUI 开源控件库、工具类库、扩展类库、多页面开发框架。
 * CopyRight (C) 2012-2023 ShenYongHua(沈永华).
 * QQ群：56829229 QQ：17612584 EMail：SunnyUI@QQ.Com
 *
 * Blog:   https://www.cnblogs.com/yhuse
 * Gitee:  https://gitee.com/yhuse/SunnyUI
 * GitHub: https://github.com/yhuse/SunnyUI
 *
 * SunnyUI.dll can be used for free under the GPL-3.0 license.
 * If you use this code, please keep this note.
 * 如果您使用此代码，请保留此说明。
 ******************************************************************************
 * 文件名称: UIContextMenuStrip.cs
 * 文件说明: 上下文菜单
 * 当前版本: V3.1
 * 创建日期: 2020-01-01
 *
 * 2020-01-01: V2.2.0 增加文件说明
 * 2020-04-25: V2.2.4 更新主题配置类
 * 2022-03-19: V3.1.1 重构主题配色
 * 2023-10-17: V3.5.1 修正文字显示垂直居中
 * 2023-10-17: V3.5.1 当右键菜单未绑定ImageList，并且ImageIndex>0时，将ImageIndex绑定为Symbol绘制
******************************************************************************/

using System.ComponentModel;
using System.Drawing;
using System.Windows.Forms;

namespace Sunny.UI
{
    public sealed class UIContextMenuStrip : ContextMenuStrip, IStyleInterface, IZoomScale
    {
        private ContextMenuColorTable ColorTable = new ContextMenuColorTable();

        public UIContextMenuStrip()
        {
            Font = UIStyles.Font();
            RenderMode = ToolStripRenderMode.Professional;
            Renderer = new UIToolStripRenderer(ColorTable);
            Version = UIGlobal.Version;

            ColorTable.SetStyleColor(UIStyles.Blue);
            BackColor = UIStyles.Blue.ContextMenuColor;
        }

        /// <summary>
        /// 禁止控件跟随窗体缩放
        /// </summary>
        [DefaultValue(false), Category("SunnyUI"), Description("禁止控件跟随窗体缩放")]
        public bool ZoomScaleDisabled { get; set; }

        /// <summary>
        /// 控件缩放前在其容器里的位置
        /// </summary>
        [Browsable(false), DefaultValue(typeof(Rectangle), "0, 0, 0, 0")]
        public Rectangle ZoomScaleRect { get; set; }

        /// <summary>
        /// 设置控件缩放比例
        /// </summary>
        /// <param name="scale">缩放比例</param>
        public void SetZoomScale(float scale)
        {

        }

        private float DefaultFontSize = -1;

        public void SetDPIScale()
        {
            if (!UIDPIScale.NeedSetDPIFont()) return;
            if (DefaultFontSize < 0) DefaultFontSize = this.Font.Size;
            this.SetDPIScaleFont(DefaultFontSize);
        }

        protected override void OnOpening(CancelEventArgs e)
        {
            base.OnOpening(e);
            SetDPIScale();
        }

        /// <summary>
        /// 自定义主题风格
        /// </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; }

        /// <summary>
        /// Tag字符串
        /// </summary>
        [DefaultValue(null)]
        [Description("获取或设置包含有关控件的数据的对象字符串"), Category("SunnyUI")]
        public string TagString { get; set; }

        public void SetStyle(UIStyle style)
        {
            if (!style.IsCustom())
            {
                SetStyleColor(style.Colors());
                Invalidate();
            }

            _style = style;
        }

        public void SetStyleColor(UIBaseStyle uiColor)
        {
            ColorTable.SetStyleColor(uiColor);
            BackColor = uiColor.ContextMenuColor;
            ForeColor = uiColor.ContextMenuForeColor;
        }

        public string Version { get; }

        private UIStyle _style = UIStyle.Blue;

        /// <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 CalcHeight()
        {
            if (Items.Count > 0 && !AutoSize)
            {
                int height = 0;
                foreach (ToolStripItem item in Items)
                {
                    height += item.Height;
                }

                Height = height + 4;
            }
        }
    }

    internal class UIToolStripRenderer : ToolStripProfessionalRenderer
    {
        public UIToolStripRenderer() { }

        public UIToolStripRenderer(ProfessionalColorTable professionalColorTable) : base(professionalColorTable) { }

        protected override void OnRenderItemText(ToolStripItemTextRenderEventArgs e)
        {
            //调整文本区域的位置和大小以实现垂直居中
            Rectangle textRect = new Rectangle(e.TextRectangle.Left, e.Item.ContentRectangle.Top, e.TextRectangle.Width, e.Item.ContentRectangle.Height);

            //设置文本绘制格式
            TextFormatFlags flags = TextFormatFlags.VerticalCenter | TextFormatFlags.SingleLine;

            //绘制文本
            TextRenderer.DrawText(e.Graphics, e.Text, e.TextFont, textRect, e.TextColor, flags);

            //当右键菜单未绑定ImageList，并且ImageIndex>0时，将ImageIndex绑定为Symbol绘制
            ToolStripItem item = e.Item;
            while (item.Owner is not ContextMenuStrip)
            {
                if (item.Owner is ToolStripDropDownMenu)
                    item = item.OwnerItem;
            }

            ContextMenuStrip ownerContextMenu = item.Owner as ContextMenuStrip;
            if (ownerContextMenu.ImageList != null) return;
            if (e.Item.ImageIndex <= 0) return;
            if (e.Item.Image != null) return;
            Rectangle imageRect = new Rectangle(0, e.Item.ContentRectangle.Top, e.TextRectangle.Left, e.Item.ContentRectangle.Height);
            e.Graphics.DrawFontImage(e.Item.ImageIndex, 24, e.TextColor, imageRect);
        }
    }

    internal class ContextMenuColorTable : ProfessionalColorTable
    {
        private UIBaseStyle StyleColor = UIStyles.GetStyleColor(UIStyle.Blue);

        public void SetStyleColor(UIBaseStyle color)
        {
            StyleColor = color;
        }

        public override Color MenuItemSelected => StyleColor.ContextMenuSelectedColor;

        public override Color MenuItemPressedGradientBegin => StyleColor.ButtonFillPressColor;

        public override Color MenuItemPressedGradientMiddle => StyleColor.ButtonFillPressColor;

        public override Color MenuItemPressedGradientEnd => StyleColor.ButtonFillPressColor;

        public override Color MenuBorder => StyleColor.ButtonRectColor;

        public override Color MenuItemBorder => StyleColor.PrimaryColor;

        public override Color ImageMarginGradientBegin => StyleColor.ContextMenuColor;

        public override Color ImageMarginGradientEnd => StyleColor.ContextMenuColor;

        public override Color ImageMarginGradientMiddle => StyleColor.ContextMenuColor;
    }
}