DotNet 4.8.1 build of DotNetBar

PROMS/DotNetBar Source Code/DevComponents.DotNetBar.Layout/Helpers.cs

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+using System;
+using System.Collections.Generic;
+using System.Text;
+using System.Drawing;
+using System.Windows.Forms;
+using System.Runtime.InteropServices;
+
+namespace DevComponents.DotNetBar.Layout
+{
+    internal static class Helpers
+    {
+        public static Size Max(Size s1, Size s2)
+        {
+            return new Size(Math.Max(s1.Width, s2.Width), Math.Max(s1.Height, s2.Height));
+        }
+        public static Rectangle Deflate(Rectangle r, System.Windows.Forms.Padding padding)
+        {
+            r.X += padding.Left;
+            r.Width -= padding.Horizontal;
+            r.Y += padding.Top;
+            r.Height -= padding.Vertical;
+
+            return r;
+        }
+        public static Rectangle Deflate(Rectangle r, DevComponents.DotNetBar.Padding padding)
+        {
+            r.X += padding.Left;
+            r.Width -= padding.Horizontal;
+            r.Y += padding.Top;
+            r.Height -= padding.Vertical;
+
+            return r;
+        }
+
+        public static int GetTextBaseline(Control ctrl, ContentAlignment alignment)
+        {
+            return GetTextBaseline(ctrl, ctrl.Font, alignment);
+        }
+
+        public static int GetTextBaseline(Control ctrl, Font font, ContentAlignment alignment)
+        {
+            Rectangle clientRect = ctrl.ClientRectangle;
+            int ascent = 0;
+            int height = 0;
+            using (Graphics g = ctrl.CreateGraphics())
+            {
+                IntPtr hdc = g.GetHdc();
+                IntPtr hFont = font.ToHfont();
+                try
+                {
+                    IntPtr oldObject = WinApi.SelectObject(hdc, hFont);
+                    WinApi.TEXTMETRIC tm = new WinApi.TEXTMETRIC();
+                    WinApi.GetTextMetrics(new HandleRef(ctrl, hdc), tm);
+                    ascent = tm.tmAscent + 1;
+                    height = tm.tmHeight;
+                    WinApi.SelectObject(hdc, oldObject);
+                }
+                finally
+                {
+                    WinApi.DeleteObject(hFont);
+                    g.ReleaseHdc(hdc);
+                }
+            }
+            if ((alignment & (ContentAlignment.TopRight | ContentAlignment.TopCenter | ContentAlignment.TopLeft)) != (ContentAlignment)0)
+            {
+                return (clientRect.Top + ascent);
+            }
+            if ((alignment & (ContentAlignment.MiddleRight | ContentAlignment.MiddleCenter | ContentAlignment.MiddleLeft)) != (ContentAlignment)0)
+            {
+                return (((clientRect.Top + (clientRect.Height / 2)) - (height / 2)) + ascent);
+            }
+            return ((clientRect.Bottom - height) + ascent);
+        }
+        public static bool IsEmpty(System.Windows.Forms.Padding p)
+        {
+            return p.Left == 0 && p.Right == 0 && p.Top == 0 && p.Bottom == 0;
+        }
+    }
+}