cyf
66 lines
2.6 KiB
C#
66 lines
2.6 KiB
C#
using System.ComponentModel;
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using System.Drawing;
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using System.Drawing.Drawing2D;
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using System.Windows.Forms;
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using System.Windows.Forms.Design;
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namespace Lskj.Control.ImageLibrary
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{
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/// <summary>
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/// ImageCarousel控件设计模式行为
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/// </summary>
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[Description("ImageCarousel控件设计模式行为")]
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public class ImageCarouselExtDesigner : ControlDesigner
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{
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protected override void OnPaintAdornments(PaintEventArgs pe)
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{
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base.OnPaintAdornments(pe);
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this.DrawTipText(pe.Graphics);
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this.DrawBorder(pe.Graphics);
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}
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/// <summary>
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/// 绘制虚线边框
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/// </summary>
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/// <param name="graphics"></param>
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private void DrawBorder(Graphics graphics)
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{
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ImageCarouselExt control = (ImageCarouselExt)this.Control;
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Rectangle clientRectangle = control.ClientRectangle;
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Pen pen = new Pen((double)control.BackColor.GetBrightness() >= 0.5 ? ControlPaint.Dark(control.BackColor) : ControlPaint.Light(control.BackColor));
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pen.DashStyle = DashStyle.Dash;
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--clientRectangle.Width;
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--clientRectangle.Height;
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graphics.DrawRectangle(pen, clientRectangle);
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#region
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RectangleF rectf = control.GetDisplayRectangle();
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pen.DashStyle = DashStyle.Solid;
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pen.Color = Color.OliveDrab;
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graphics.DrawRectangle(pen, rectf.X, rectf.Y, rectf.Width, rectf.Height);
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#endregion
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pen.Dispose();
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}
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/// <summary>
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/// 绘制提示文本
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/// </summary>
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/// <param name="graphics"></param>
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private void DrawTipText(Graphics graphics)
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{
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ImageCarouselExt _control = (ImageCarouselExt)this.Control;
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System.Windows.Forms.Control control = this.Control;
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if (_control.Images.Count < 1)
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{
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string text = "请添加图片";
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SizeF text_size = graphics.MeasureString(text, _control.Font);
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SolidBrush text_sb = new SolidBrush((double)control.BackColor.GetBrightness() >= 0.5 ? ControlPaint.Dark(control.BackColor) : ControlPaint.Light(control.BackColor));
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graphics.DrawString(text, _control.Font, text_sb, new RectangleF(control.ClientRectangle.X + (control.ClientRectangle.Width - text_size.Width) / 2f, control.ClientRectangle.Y + (control.ClientRectangle.Height - text_size.Height) / 2f, text_size.Width, text_size.Height));
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text_sb.Dispose();
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}
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}
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}
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}
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