22rw darkmode rendering

SteamShutdown/ColorUtils.cs

@@ -0,0 +1,41 @@
+using Microsoft.Win32;
+using System;
+using System.Drawing;
+
+namespace SteamShutdown
+{
+    public static class ColorUtils
+    {
+        public static bool SystemUsesLightTheme()
+        {
+            int sult = (Int32)Registry.GetValue(@"HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Themes\Personalize", "AppsUseLightTheme", null);
+            return sult == 1;
+        }
+
+        public static Color GetAccentColor()
+        {
+            const String DWM_KEY = @"Software\Microsoft\Windows\DWM";
+            using (RegistryKey dwmKey = Registry.CurrentUser.OpenSubKey(DWM_KEY, RegistryKeyPermissionCheck.ReadSubTree))
+            {
+                const String KEY_EX_MSG = "The \"HKCU\\" + DWM_KEY + "\" registry key does not exist.";
+                if (dwmKey is null) throw new InvalidOperationException(KEY_EX_MSG);
+
+                Object accentColorObj = dwmKey.GetValue("AccentColor");
+                if (accentColorObj is Int32 accentColorDword)
+                {
+                    return ParseDWordColor(accentColorDword);
+                }
+                else
+                {
+                    const String VALUE_EX_MSG = "The \"HKCU\\" + DWM_KEY + "\\AccentColor\" registry key value could not be parsed as an ABGR color.";
+                    throw new InvalidOperationException(VALUE_EX_MSG);
+                }
+            }
+        }
+
+        private static Color ParseDWordColor(Int32 color)
+        {
+            return Color.FromArgb((color >> 24) & 0xFF, (color >> 0) & 0xFF, (color >> 8) & 0xFF, (color >> 16) & 0xFF);
+        }
+    }
+}

SteamShutdown/CustomApplicationContext.cs

@@ -1,4 +1,4 @@
-using SteamShutdown.Actions;
+using SteamShutdown.Actions;
 using System;
 using System.Linq;
 using System.Reflection;
@@ -171,6 +171,10 @@ private void InitializeContext()
             };
             NotifyIcon.MouseUp += NotifyIcon_MouseUp;
             NotifyIcon.ContextMenuStrip.Opening += ContextMenuStrip_Opening;
+	    NotifyIcon.ContextMenuStrip.RenderMode = ToolStripRenderMode.Professional;
+	    if(!ColorUtils.SystemUsesLightTheme())
+                NotifyIcon.ContextMenuStrip.Renderer = new DarkRenderer(ColorUtils.GetAccentColor());
+
             NotifyIcon.ShowBalloonTip(2000, "Hello", "You find me in the taskbar.", ToolTipIcon.Info);
         }
 

SteamShutdown/DarkRenderer.cs

@@ -0,0 +1,111 @@
+using System.Drawing;
+using System.Drawing.Drawing2D;
+using System.Windows.Forms;
+
+namespace SteamShutdown
+{
+    internal class DarkColorTable : ProfessionalColorTable
+    {
+        private Color _backColor = Color.FromArgb(43, 43, 43),
+                      _itemSelectedColor = Color.FromArgb(65, 65, 65),
+                      _borderColor = Color.FromArgb(128, 128, 128),
+                      _separatorColor = Color.FromArgb(128, 128, 128),
+                      _btnPressedColor = Color.FromArgb(110, 160, 230);
+
+        //Border color
+        public override Color ToolStripBorder => _borderColor;
+        public override Color MenuBorder => _borderColor;
+
+        //Background color
+        public override Color ToolStripDropDownBackground => _backColor;
+        public override Color MenuStripGradientBegin => _backColor;
+        public override Color MenuStripGradientEnd => _backColor;
+        public override Color CheckBackground => _backColor;
+        public override Color CheckSelectedBackground => _backColor;
+        public override Color CheckPressedBackground => _backColor;
+        public override Color ImageMarginGradientBegin => _backColor;
+        public override Color ImageMarginGradientMiddle => _backColor;
+        public override Color ImageMarginGradientEnd => _backColor;
+
+        //Seperator color
+        public override Color SeparatorDark => _separatorColor;
+        public override Color SeparatorLight => _separatorColor;
+
+        //MenuItem selected color
+        public override Color MenuItemSelected => _itemSelectedColor;
+        public override Color MenuItemBorder => _itemSelectedColor;
+
+        //Item pressed color
+        public override Color ButtonPressedBorder => _btnPressedColor;
+        public override Color ButtonPressedGradientBegin => _btnPressedColor;
+        public override Color ButtonPressedGradientMiddle => _btnPressedColor;
+        public override Color ButtonPressedGradientEnd => _btnPressedColor;
+
+        //StatusStrip color
+        public override Color StatusStripGradientBegin => _backColor;
+        public override Color StatusStripGradientEnd => _backColor;
+    }
+
+    public class DarkRenderer : ToolStripProfessionalRenderer
+    {
+        private Color _accentColor;
+
+        public DarkRenderer(Color accentColor) : base(new DarkColorTable())
+        {
+            _accentColor = accentColor;
+        }
+
+        //Make sure the text is rendered with white text color
+        protected override void OnRenderItemText(ToolStripItemTextRenderEventArgs e)
+        {
+            e.TextColor = Color.White;
+            base.OnRenderItemText(e);
+        }
+
+        //Rendering the arrow for the actions submenu
+        protected override void OnRenderArrow(ToolStripArrowRenderEventArgs e)
+        {
+            e.Graphics.SmoothingMode = SmoothingMode.AntiAlias;
+
+            //Rectangle for the arrows bounding box, a smaller box for a cleaner menu look
+            var r = new Rectangle(e.ArrowRectangle.Location, e.ArrowRectangle.Size);
+            r.Inflate(-3, -6);
+
+            //The arrow consists of two lines, defined by 3 points
+            e.Graphics.DrawLines(Pens.White, new Point[3] {
+                new Point(r.Left, r.Top),
+                new Point(r.Right, r.Top + r.Height /2),
+                new Point(r.Left, r.Top+ r.Height)
+            });
+        }
+
+        //Rendering the checkmark and its surrounding box
+        protected override void OnRenderItemCheck(ToolStripItemImageRenderEventArgs e)
+        {
+            if (e != null)
+            {
+                e.Graphics.SmoothingMode = SmoothingMode.AntiAlias;
+
+                var rectImage = new Rectangle(e.ImageRectangle.Location, e.ImageRectangle.Size);
+                rectImage.X += 4;
+                //rectImage.Inflate(-1, -1);
+
+                using (var p = new Pen(_accentColor, 1))
+                    e.Graphics.DrawRectangle(p, rectImage);
+
+                rectImage.Width -= 6;
+                rectImage.Height -= 8;
+
+                rectImage.X += 3;
+                rectImage.Y += 4;
+
+                using (var p = new Pen(Color.White, 1))
+                {
+                    e.Graphics.DrawLines(p, new Point[] { new Point(rectImage.Left, rectImage.Bottom - (int)(rectImage.Height / 2)), new Point(rectImage.Left + (int)(rectImage.Width / 3), rectImage.Bottom), new Point(rectImage.Right, rectImage.Top) });
+                }
+            }
+            else
+                base.OnRenderItemCheck(e);
+        }
+    }
+}