Added CreateGraphicsContext and CreateWindowInfo code.
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kanato
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c084833d48
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1 changed files with 126 additions and 0 deletions
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@ -212,6 +212,132 @@ namespace OpenTK.Platform
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}
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#endregion
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#region --- Creating an Graphics Context ---
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#region --- CreateWindowInfo ---
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/// <summary>
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/// Creates GraphicsContext and IWindowInfo objects for a WinForms control.
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/// </summary>
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/// <param name="cntrl"></param>
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/// <param name="context"></param>
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/// <param name="info"></param>
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/// <param name="mode"></param>
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public static void CreateGraphicsContext(Graphics.GraphicsMode mode, Control cntrl, out Graphics.GraphicsContext context, out IWindowInfo info)
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{
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CreateGraphicsContext(mode, cntrl.Handle, out context, out info);
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}
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/// <summary>
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/// Creates GraphicsContext and IWindowInfo objects for a WinForms control.
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/// </summary>
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/// <param name="cntrlHandle"></param>
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/// <param name="context"></param>
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/// <param name="info"></param>
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/// <param name="mode"></param>
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public static void CreateGraphicsContext(Graphics.GraphicsMode mode, IntPtr cntrlHandle, out Graphics.GraphicsContext context, out IWindowInfo info)
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{
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info = CreateWindowInfo(mode, cntrlHandle);
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context = new Graphics.GraphicsContext(mode, info);
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context.MakeCurrent(info);
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(context as OpenTK.Graphics.IGraphicsContextInternal).LoadAll();
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}
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/// <summary>
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/// Creates an object which implements the IWindowInfo interface for the platform
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/// currently running on. This will create a handle for the control, so it is not
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/// recommended that this be called in the constructor of a custom control.
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/// </summary>
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/// <param name="cntrl"></param>
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/// <returns></returns>
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public static IWindowInfo CreateWindowInfo(Graphics.GraphicsMode mode, Control cntrl)
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{
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return CreateWindowInfo(mode, cntrl.Handle);
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}
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/// <summary>
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/// Creates an object which implements the IWindowInfo interface for the platform
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/// currently running on.
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/// </summary>
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/// <param name="controlHandle">The handle to the control, obtained from Control.Handle.</param>
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/// <returns></returns>
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public static IWindowInfo CreateWindowInfo(Graphics.GraphicsMode mode, IntPtr controlHandle)
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{
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if (Configuration.RunningOnWindows) return CreateWinWindowInfo(controlHandle);
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else if (Configuration.RunningOnX11) return CreateX11WindowInfo(mode, controlHandle);
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else if (Configuration.RunningOnOSX) return CreateOSXWindowInfo(controlHandle);
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else
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throw new PlatformNotSupportedException("Refer to http://www.opentk.com for more information.");
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}
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#endregion
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#region --- X11 Platform-specific implementation ---
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private static IWindowInfo CreateX11WindowInfo(Graphics.GraphicsMode mode, IntPtr controlHandle)
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{
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Platform.X11.X11WindowInfo window = new OpenTK.Platform.X11.X11WindowInfo();
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Type xplatui = Type.GetType("System.Windows.Forms.XplatUIX11, System.Windows.Forms");
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if (xplatui == null) throw new PlatformNotSupportedException(
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"System.Windows.Forms.XplatUIX11 missing. Unsupported platform or Mono runtime version, aborting.");
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window.WindowHandle = controlHandle;
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// get the required handles from the X11 API.
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window.Display = (IntPtr)GetStaticFieldValue(xplatui, "DisplayHandle");
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window.RootWindow = (IntPtr)GetStaticFieldValue(xplatui, "RootWindow");
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window.Screen = (int)GetStaticFieldValue(xplatui, "ScreenNo");
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// get the X11 Visual info for the display.
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Platform.X11.XVisualInfo info = new Platform.X11.XVisualInfo();
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info.visualid = mode.Index;
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int dummy;
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window.VisualInfo = (Platform.X11.XVisualInfo)Marshal.PtrToStructure(
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Platform.X11.Functions.XGetVisualInfo(window.Display, Platform.X11.XVisualInfoMask.ID,
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ref info, out dummy), typeof(Platform.X11.XVisualInfo));
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// set the X11 colormap.
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SetStaticFieldValue(xplatui, "CustomVisual", window.VisualInfo.visual);
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SetStaticFieldValue(xplatui, "CustomColormap",
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Platform.X11.Functions.XCreateColormap(window.Display, window.RootWindow, window.VisualInfo.visual, 0));
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return window;
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}
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#endregion
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#region --- Windows Platform-specific implementation ---
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private static IWindowInfo CreateWinWindowInfo(IntPtr controlHandle)
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{
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return new OpenTK.Platform.Windows.WinWindowInfo(controlHandle, null);
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}
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#endregion
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#region --- Mac OS X Platform-specific implementation ---
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private static IWindowInfo CreateOSXWindowInfo(IntPtr controlHandle)
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{
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throw new PlatformNotSupportedException("Refer to http://www.opentk.com for more information.");
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}
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#endregion
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#region --- Utility functions for reading/writing non-public static fields through reflection ---
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private static object GetStaticFieldValue(Type type, string fieldName)
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{
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return type.GetField(fieldName,
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System.Reflection.BindingFlags.Static | System.Reflection.BindingFlags.NonPublic).GetValue(null);
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}
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private static void SetStaticFieldValue(Type type, string fieldName, object value)
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{
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type.GetField(fieldName,
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System.Reflection.BindingFlags.Static | System.Reflection.BindingFlags.NonPublic).SetValue(null, value);
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}
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#endregion
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#endregion
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}
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}
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