From dad09c9e7c1ff68a157836b636f13f25d27e050a Mon Sep 17 00:00:00 2001
From: Michael <Michael@some.where>
Date: Sun, 2 Jul 2017 13:31:39 -0400
Subject: Render text onscreen

---
 ShiftOS.Frontend/GraphicsSubsystem/UIManager.cs | 82 +++++++++++++++++++++++++
 1 file changed, 82 insertions(+)
 create mode 100644 ShiftOS.Frontend/GraphicsSubsystem/UIManager.cs

(limited to 'ShiftOS.Frontend/GraphicsSubsystem')

diff --git a/ShiftOS.Frontend/GraphicsSubsystem/UIManager.cs b/ShiftOS.Frontend/GraphicsSubsystem/UIManager.cs
new file mode 100644
index 0000000..fdd5f99
--- /dev/null
+++ b/ShiftOS.Frontend/GraphicsSubsystem/UIManager.cs
@@ -0,0 +1,82 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Runtime.InteropServices;
+using System.Text;
+using System.Threading.Tasks;
+using Microsoft.Xna.Framework;
+using Microsoft.Xna.Framework.Graphics;
+using Microsoft.Xna.Framework.Input;
+using ShiftOS.Engine;
+using ShiftOS.Frontend.Desktop;
+
+namespace ShiftOS.Frontend.GraphicsSubsystem
+{
+    public static class UIManager
+    {
+        private static List<GUI.Control> topLevels = new List<GUI.Control>();
+
+        public static void DrawControls(GraphicsDevice graphics, SpriteBatch batch)
+        {
+            foreach (var ctrl in topLevels)
+            {
+                using(var bmp = new System.Drawing.Bitmap(ctrl.Width, ctrl.Height))
+                {
+                    var gfx = System.Drawing.Graphics.FromImage(bmp);
+                    ctrl.Paint(gfx);
+                    //get the bits of the bitmap
+                    var data = bmp.LockBits(new System.Drawing.Rectangle(0, 0, bmp.Width, bmp.Height), System.Drawing.Imaging.ImageLockMode.ReadOnly, System.Drawing.Imaging.PixelFormat.Format32bppArgb);
+                    byte[] rgb = new byte[Math.Abs(data.Stride) * data.Height];
+                    Marshal.Copy(data.Scan0, rgb, 0, rgb.Length);
+                    bmp.UnlockBits(data);
+                    var tex2 = new Texture2D(graphics, bmp.Width, bmp.Height);
+                    tex2.SetData<byte>(rgb);
+                    batch.Draw(tex2, new Rectangle(ctrl.X, ctrl.Y, ctrl.Width, ctrl.Height), Color.White);
+                }
+            }
+        }
+
+        public static void AddTopLevel(GUI.Control ctrl)
+        {
+            if (!topLevels.Contains(ctrl))
+                topLevels.Add(ctrl);
+        }
+
+        public static void ProcessMouseState(MouseState state)
+        {
+            foreach(var ctrl in topLevels)
+            {
+                if (ctrl.ProcessMouseState(state) == true)
+                    break;
+            }
+        }
+
+
+
+        public static void DrawBackgroundLayer(GraphicsDevice graphics, SpriteBatch batch, int width, int height)
+        {
+            if (SkinEngine.LoadedSkin == null)
+                SkinEngine.Init();
+            graphics.Clear(SkinEngine.LoadedSkin.DesktopColor.ToMonoColor());
+            var desktopbg = SkinEngine.GetImage("desktopbackground");
+            if(desktopbg != null)
+            {
+                var tex2 = new Texture2D(graphics, desktopbg.Width, desktopbg.Height);
+                tex2.SetData<byte>(SkinEngine.LoadedSkin.DesktopBackgroundImage);
+                batch.Draw(tex2, new Rectangle(0, 0, width, height), Color.White);
+            }
+        }
+
+        public static Color ToMonoColor(this System.Drawing.Color color)
+        {
+            return new Color(color.R, color.G, color.B, color.A);
+        }
+
+        internal static void StopHandling(GUI.Control ctrl)
+        {
+            if (topLevels.Contains(ctrl))
+                topLevels.Remove(ctrl);
+            ctrl = null;
+        }
+    }
+}
-- 
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