Ability to specify overlay via interface API

 * CaptureInterface.DrawOverlay added
 * D3D9 image supports scale and rotation
 * D3D9 image load from memory support added

Fixes #36, #10

Capture/Capture.csproj

@@ -112,6 +112,7 @@
     <Compile Include="Hook\Hook.cs" />
     <Compile Include="Hook\HookManager.cs" />
     <Compile Include="Hook\TextDisplay.cs" />
+    <Compile Include="Interface\DrawOverlayEventArgs.cs" />
     <Compile Include="Interface\ScreenshotExtensions.cs" />
     <Compile Include="Interface\CaptureConfig.cs" />
     <Compile Include="EntryPoint.cs" />

Capture/Hook/BaseDXHook.cs

@@ -27,9 +27,12 @@ public BaseDXHook(CaptureInterface ssInterface)
 
             Interface.ScreenshotRequested += InterfaceEventProxy.ScreenshotRequestedProxyHandler;
             Interface.DisplayText += InterfaceEventProxy.DisplayTextProxyHandler;
+            Interface.DrawOverlay += InterfaceEventProxy.DrawOverlayProxyHandler;
             InterfaceEventProxy.ScreenshotRequested += new ScreenshotRequestedEvent(InterfaceEventProxy_ScreenshotRequested);
             InterfaceEventProxy.DisplayText += new DisplayTextEvent(InterfaceEventProxy_DisplayText);
+            InterfaceEventProxy.DrawOverlay += InterfaceEventProxy_DrawOverlay;
         }
+
         ~BaseDXHook()
         {
             Dispose(false);
@@ -50,6 +53,14 @@ protected virtual void InterfaceEventProxy_ScreenshotRequested(ScreenshotRequest
             this.Request = request;
         }
 
+        private void InterfaceEventProxy_DrawOverlay(DrawOverlayEventArgs args)
+        {
+            Overlays = new List<Common.IOverlay>();
+            if (args.Overlay != null)
+                Overlays.Add(args.Overlay);
+            IsOverlayUpdatePending = true;
+        }
+
         protected Stopwatch Timer { get; set; }
 
         /// <summary>
@@ -59,6 +70,10 @@ protected virtual void InterfaceEventProxy_ScreenshotRequested(ScreenshotRequest
 
         protected TextDisplay TextDisplay { get; set; }
 
+        protected List<Common.IOverlay> Overlays { get; set; }
+
+        protected bool IsOverlayUpdatePending { get; set; }
+
         int _processId = 0;
         protected int ProcessId
         {
@@ -394,6 +409,7 @@ protected override void Dispose(bool disposeManagedResources)
                         // Remove the event handlers
                         Interface.ScreenshotRequested -= InterfaceEventProxy.ScreenshotRequestedProxyHandler;
                         Interface.DisplayText -= InterfaceEventProxy.DisplayTextProxyHandler;
+                        Interface.DrawOverlay -= InterfaceEventProxy_DrawOverlay;
                     }
                     catch (RemotingException) { } // Ignore remoting exceptions (host process may have been closed)
                 }

Capture/Hook/Common/Element.cs

@@ -8,7 +8,7 @@
 namespace Capture.Hook.Common
 {
     [Serializable]
-    public abstract class Element: MarshalByRefObject, IOverlayElement, IDisposable
+    public abstract class Element: IOverlayElement, IDisposable
     {
         public virtual bool Hidden { get; set; }
 
@@ -41,7 +41,6 @@ protected virtual void Dispose(bool disposing)
         {
             if (disposing)
             {
-                Disconnect();
             }
         }
 
@@ -50,22 +49,5 @@ protected void SafeDispose(IDisposable disposableObj)
             if (disposableObj != null)
                 disposableObj.Dispose();
         }
-
-        /// <summary>
-        /// Disconnects the remoting channel(s) of this object and all nested objects.
-        /// </summary>
-        private void Disconnect()
-        {
-            RemotingServices.Disconnect(this);
-        }
-
-        [SecurityPermissionAttribute(SecurityAction.Demand, Flags = SecurityPermissionFlag.Infrastructure)]
-        public override object InitializeLifetimeService()
-        {
-            // Returning null designates an infinite non-expiring lease.
-            // We must therefore ensure that RemotingServices.Disconnect() is called when
-            // it's no longer needed otherwise there will be a memory leak.
-            return null;
-        }
     }
 }

Capture/Hook/Common/FramesPerSecond.cs

@@ -5,6 +5,7 @@
 
 namespace Capture.Hook.Common
 {
+    [Serializable]
     public class FramesPerSecond: TextElement
     {
         string _fpsFormat = "{0:N0} fps";

Capture/Hook/Common/IOverlay.cs

@@ -6,7 +6,7 @@
 
 namespace Capture.Hook.Common
 {
-    internal interface IOverlay: IOverlayElement
+    public interface IOverlay: IOverlayElement
     {
         List<IOverlayElement> Elements { get; set; }
     }

Capture/Hook/Common/ImageElement.cs

@@ -1,21 +1,41 @@
-using System;
+using Capture.Interface;
+using System;
 using System.Collections.Generic;
 using System.Linq;
 using System.Text;
 
 namespace Capture.Hook.Common
 {
+    [Serializable]
     public class ImageElement: Element
     {
-        public virtual System.Drawing.Bitmap Bitmap { get; set; }
-
+        /// <summary>
+        /// The image file bytes
+        /// </summary>
+        public virtual byte[] Image { get; set; }
+
+        System.Drawing.Bitmap _bitmap = null;
+        internal virtual System.Drawing.Bitmap Bitmap {
+            get
+            {
+                if (_bitmap == null && Image != null)
+                {
+                    _bitmap = Image.ToBitmap();
+                    _ownsBitmap = true;
+                }
+
+                return _bitmap;
+            }
+            set { _bitmap = value; }
+        }
+
         /// <summary>
         /// This value is multiplied with the source color (e.g. White will result in same color as source image)
         /// </summary>
         /// <remarks>
         /// Defaults to <see cref="System.Drawing.Color.White"/>.
         /// </remarks>
-        public virtual System.Drawing.Color Tint { get; set; }
+        public virtual System.Drawing.Color Tint { get; set; } = System.Drawing.Color.White;
 
         /// <summary>
         /// The location of where to render this image element
@@ -24,12 +44,14 @@ public class ImageElement: Element
 
         public float Angle { get; set; }
 
-        public float Scale { get; set; }
+        public float Scale { get; set; } = 1.0f;
 
         public string Filename { get; set; }
 
         bool _ownsBitmap = false;
 
+        public ImageElement() { }
+
         public ImageElement(string filename):
             this(new System.Drawing.Bitmap(filename), true)
         {

Capture/Hook/Common/Overlay.cs

@@ -5,6 +5,7 @@
 
 namespace Capture.Hook.Common
 {
+    [Serializable]
     public class Overlay: IOverlay
     {
         List<IOverlayElement> _elements = new List<IOverlayElement>();

Capture/Hook/Common/TextElement.cs

@@ -5,13 +5,16 @@
 
 namespace Capture.Hook.Common
 {
+    [Serializable]
     public class TextElement: Element
     {
         public virtual string Text { get; set; }
-        public virtual System.Drawing.Font Font { get; set; }
-        public virtual System.Drawing.Color Color { get; set; }
+        public virtual System.Drawing.Font Font { get; set; } = System.Drawing.SystemFonts.DefaultFont;
+        public virtual System.Drawing.Color Color { get; set; } = System.Drawing.Color.Black;
         public virtual System.Drawing.Point Location { get; set; }
-        public virtual bool AntiAliased { get; set; }
+        public virtual bool AntiAliased { get; set; } = false;
+
+        public TextElement() { }
 
         public TextElement(System.Drawing.Font font)
         {

Capture/Hook/DX11/DXOverlayEngine.cs

@@ -38,7 +38,8 @@ public DXOverlayEngine()
 
         private void EnsureInitiliased()
         {
-            Debug.Assert(_initialised);
+            if (!_initialised)
+                throw new InvalidOperationException("DXOverlayEngine must be initialised.");
         }
 
         public bool Initialise(SharpDX.DXGI.SwapChain swapChain)
@@ -48,7 +49,6 @@ public bool Initialise(SharpDX.DXGI.SwapChain swapChain)
 
         public bool Initialise(Device device, Texture2D renderTarget)
         {
-            Debug.Assert(!_initialised);
             if (_initialising)
                 return false;
 
@@ -82,7 +82,7 @@ public bool Initialise(Device device, Texture2D renderTarget)
                     return false;
 
                 // Initialise any resources required for overlay elements
-                IntialiseElementResources();
+                InitialiseElementResources();
 
                 _initialised = true;
                 return true;
@@ -93,7 +93,7 @@ public bool Initialise(Device device, Texture2D renderTarget)
             }
         }
 
-        private void IntialiseElementResources()
+        void InitialiseElementResources()
         {
             foreach (var overlay in Overlays)
             {
@@ -135,6 +135,9 @@ public void Draw()
 
             foreach (var overlay in Overlays)
             {
+                if (overlay.Hidden)
+                    continue;
+
                 foreach (var element in overlay.Elements)
                 {
                     if (element.Hidden)
@@ -175,7 +178,7 @@ DXFont GetFontForTextElement(TextElement element)
         {
             DXFont result = null;
 
-            string fontKey = String.Format("{0}{1}{2}", element.Font.Name, element.Font.Size, element.Font.Style, element.AntiAliased);
+            string fontKey = String.Format("{0}{1}{2}{3}", element.Font.Name, element.Font.Size, element.Font.Style, element.AntiAliased);
 
             if (!_fontCache.TryGetValue(fontKey, out result))
             {

Capture/Hook/DX9/DXOverlayEngine.cs

@@ -4,6 +4,7 @@
 using System;
 using System.Collections.Generic;
 using System.Diagnostics;
+using System.IO;
 using System.Linq;
 using System.Runtime.InteropServices;
 using System.Text;
@@ -114,9 +115,17 @@ public void Draw()
                     }
                     else if (imageElement != null)
                     {
+                        //Apply the scaling of the imageElement
+                        var rotation = Matrix.RotationZ(imageElement.Angle);
+                        var scaling = Matrix.Scaling(imageElement.Scale);
+                        _sprite.Transform = rotation * scaling;
+
                         Texture image = GetImageForImageElement(imageElement);
                         if (image != null)
                             _sprite.Draw(image, new SharpDX.ColorBGRA(imageElement.Tint.R, imageElement.Tint.G, imageElement.Tint.B, imageElement.Tint.A), null, null, new Vector3(imageElement.Location.X, imageElement.Location.Y, 0));
+
+                        //Reset the transform for other elements
+                        _sprite.Transform = Matrix.Identity;
                     }
                 }
             }
@@ -149,7 +158,7 @@ Font GetFontForTextElement(TextElement element)
         {
             Font result = null;
 
-            string fontKey = String.Format("{0}{1}{2}", element.Font.Name, element.Font.Size, element.Font.Style, element.AntiAliased);
+            string fontKey = String.Format("{0}{1}{2}{3}", element.Font.Name, element.Font.Size, element.Font.Style, element.AntiAliased);
 
             if (!_fontCache.TryGetValue(fontKey, out result))
             {
@@ -178,6 +187,17 @@ Texture GetImageForImageElement(ImageElement element)
                     _imageCache[element] = result;
                 }
             }
+            else if (!_imageCache.TryGetValue(element, out result) && element.Bitmap != null)
+            {
+                using (var ms = new MemoryStream())
+                {
+                    element.Bitmap.Save(ms, System.Drawing.Imaging.ImageFormat.Png);
+                    ms.Seek(0, SeekOrigin.Begin);
+                    result = ToDispose(Texture.FromStream(Device, ms));
+                }
+
+                _imageCache[element] = result;
+            }
             return result;
         }
 

Capture/Hook/DXHookD3D11.cs

@@ -11,6 +11,7 @@
 using System.IO;
 using Capture.Interface;
 using SharpDX.Direct3D;
+using Capture.Hook.Common;
 
 namespace Capture.Hook
 {
@@ -508,30 +509,26 @@ int PresentHook(IntPtr swapChainPtr, int syncInterval, SharpDX.DXGI.PresentFlags
                 #endregion
 
                 #region Draw overlay (after screenshot so we don't capture overlay as well)
-                if (this.Config.ShowOverlay)
+                var displayOverlays = Overlays;
+                if (this.Config.ShowOverlay && displayOverlays != null)
                 {
                     // Initialise Overlay Engine
-                    if (_swapChainPointer != swapChain.NativePointer || _overlayEngine == null)
+                    if (_swapChainPointer != swapChain.NativePointer || _overlayEngine == null
+                        || IsOverlayUpdatePending)
                     {
                         if (_overlayEngine != null)
                             _overlayEngine.Dispose();
 
                         _overlayEngine = new DX11.DXOverlayEngine();
-                        _overlayEngine.Overlays.Add(new Capture.Hook.Common.Overlay
-                        {
-                            Elements =
-                            {
-                                //new Capture.Hook.Common.TextElement(new System.Drawing.Font("Times New Roman", 22)) { Text = "Test", Location = new System.Drawing.Point(200, 200), Color = System.Drawing.Color.Yellow, AntiAliased = false},
-                                new Capture.Hook.Common.FramesPerSecond(new System.Drawing.Font("Arial", 16)) { Location = new System.Drawing.Point(5,5), Color = System.Drawing.Color.Red, AntiAliased = true },
-                                //new Capture.Hook.Common.ImageElement(@"C:\Temp\test.bmp") { Location = new System.Drawing.Point(20, 20) }
-                            }
-                        });
+                        _overlayEngine.Overlays.AddRange((IEnumerable<IOverlay>)displayOverlays);
                         _overlayEngine.Initialise(swapChain);
 
                         _swapChainPointer = swapChain.NativePointer;
+
+                        IsOverlayUpdatePending = false;
                     }
                     // Draw Overlay(s)
-                    else if (_overlayEngine != null)
+                    if (_overlayEngine != null)
                     {
                         foreach (var overlay in _overlayEngine.Overlays)
                             overlay.Frame();