基线 SVN r240

SVN-Revision: r240
2025-02-06 06:46:06 +00:00
commit ab56a9bcf7
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+using System.ComponentModel;
+using System.Drawing;
+using System.Drawing.Drawing2D;
+using System.Windows.Forms;
+using System.Windows.Forms.Design;
+
+namespace Lskj.Control.ImageLibrary
+{
+    /// <summary>
+    /// ImageCarousel控件设计模式行为
+    /// </summary>
+    [Description("ImageCarousel控件设计模式行为")]
+    public class ImageCarouselExtDesigner : ControlDesigner
+    {
+        protected override void OnPaintAdornments(PaintEventArgs pe)
+        {
+            base.OnPaintAdornments(pe);
+            this.DrawTipText(pe.Graphics);
+            this.DrawBorder(pe.Graphics);
+        }
+
+        /// <summary>
+        /// 绘制虚线边框
+        /// </summary>
+        /// <param name="graphics"></param>
+        private void DrawBorder(Graphics graphics)
+        {
+            ImageCarouselExt control = (ImageCarouselExt)this.Control;
+            Rectangle clientRectangle = control.ClientRectangle;
+            Pen pen = new Pen((double)control.BackColor.GetBrightness() >= 0.5 ? ControlPaint.Dark(control.BackColor) : ControlPaint.Light(control.BackColor));
+            pen.DashStyle = DashStyle.Dash;
+            --clientRectangle.Width;
+            --clientRectangle.Height;
+            graphics.DrawRectangle(pen, clientRectangle);
+
+            #region
+            RectangleF rectf = control.GetDisplayRectangle();
+            pen.DashStyle = DashStyle.Solid;
+            pen.Color = Color.OliveDrab;
+            graphics.DrawRectangle(pen, rectf.X, rectf.Y, rectf.Width, rectf.Height);
+            #endregion
+
+            pen.Dispose();
+        }
+
+        /// <summary>
+        /// 绘制提示文本
+        /// </summary>
+        /// <param name="graphics"></param>
+        private void DrawTipText(Graphics graphics)
+        {
+            ImageCarouselExt _control = (ImageCarouselExt)this.Control;
+            System.Windows.Forms.Control control = this.Control;
+            if (_control.Images.Count < 1)
+            {
+                string text = "请添加图片";
+                SizeF text_size = graphics.MeasureString(text, _control.Font);
+                SolidBrush text_sb = new SolidBrush((double)control.BackColor.GetBrightness() >= 0.5 ? ControlPaint.Dark(control.BackColor) : ControlPaint.Light(control.BackColor));
+                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));
+                text_sb.Dispose();
+            }
+        }
+
+    }
+}