Opentk/Source/OpenTK/Platform/Windows/WinFactory.cs

#region License
//
// The Open Toolkit Library License
//
// Copyright (c) 2006 - 2009 the Open Toolkit library.
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights to 
// use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
// the Software, and to permit persons to whom the Software is furnished to do
// so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in all
// copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
// OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
// HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
// WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
// OTHER DEALINGS IN THE SOFTWARE.
//
#endregion

using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.Text;

namespace OpenTK.Platform.Windows
{
    using Graphics;
    using OpenTK.Input;

    class WinFactory : IPlatformFactory 
    {
        readonly object SyncRoot = new object();
        IInputDriver2 inputDriver;

        public WinFactory()
        {
            if (System.Environment.OSVersion.Version.Major >= 6)
            {
                // Enable high-dpi support
                // Only available on Windows Vista and higher
                bool result = Functions.SetProcessDPIAware();
                Debug.Print("SetProcessDPIAware() returned {0}", result);
            }
        }

        #region IPlatformFactory Members

        public virtual INativeWindow CreateNativeWindow(int x, int y, int width, int height, string title, GraphicsMode mode, GameWindowFlags options, DisplayDevice device)
        {
            return new WinGLNative(x, y, width, height, title, options, device);
        }

        public virtual IDisplayDeviceDriver CreateDisplayDeviceDriver()
        {
            return new WinDisplayDeviceDriver();
        }

        public virtual IGraphicsContext CreateGLContext(GraphicsMode mode, IWindowInfo window, IGraphicsContext shareContext, bool directRendering, int major, int minor, GraphicsContextFlags flags)
        {
            return new WinGLContext(mode, (WinWindowInfo)window, shareContext, major, minor, flags);
        }

        public virtual IGraphicsContext CreateGLContext(ContextHandle handle, IWindowInfo window, IGraphicsContext shareContext, bool directRendering, int major, int minor, GraphicsContextFlags flags)
        {
            return new WinGLContext(handle, (WinWindowInfo)window, shareContext, major, minor, flags);
        }

        public virtual GraphicsContext.GetCurrentContextDelegate CreateGetCurrentGraphicsContext()
        {
            return (GraphicsContext.GetCurrentContextDelegate)delegate
            {
                return new ContextHandle(Wgl.GetCurrentContext());
            };
        }

        public virtual IGraphicsMode CreateGraphicsMode()
        {
            return new WinGraphicsMode();
        }

        public virtual OpenTK.Input.IKeyboardDriver2 CreateKeyboardDriver()
        {
            return InputDriver.KeyboardDriver;
        }

        public virtual OpenTK.Input.IMouseDriver2 CreateMouseDriver()
        {
            return InputDriver.MouseDriver;
        }

        public virtual OpenTK.Input.IGamePadDriver CreateGamePadDriver()
        {
            return InputDriver.GamePadDriver;
        }
        
        #endregion

        IInputDriver2 InputDriver
        {
            get
            {
                lock (SyncRoot)
                {
                    if (inputDriver == null)
                    {
                        // If Windows version is NT5 or higher, we are able to use raw input.
                        if (System.Environment.OSVersion.Version.Major > 5 ||
                            (System.Environment.OSVersion.Version.Major == 5 && 
                            System.Environment.OSVersion.Version.Minor > 0))
                            inputDriver = new WinRawInput();
                        else
                            inputDriver = new WMInput();
                    }
                    return inputDriver;
                }
            }
        }
    }
}