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Added timer callback to WM_ENTERSIZEMOVE messages to avoid stalling the rendering during the modal size/move loop (which occurs when the user clicks the window bar or borders). Still need to find a way to notify the frontend (GameWindow) to process queued up UpdateFrame/RenderFrame events.

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This commit is contained in:
the_fiddler 2009-10-07 13:07:36 +00:00
parent eaac78008b
commit a6984a7a48
1 changed files with 27 additions and 0 deletions
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27
Source/OpenTK/Platform/Windows/WinGLNative.cs
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@ -50,6 +50,13 @@ namespace OpenTK.Platform.Windows
readonly IntPtr Instance = Marshal.GetHINSTANCE(typeof(WinGLNative).Module); readonly IntPtr Instance = Marshal.GetHINSTANCE(typeof(WinGLNative).Module);
readonly IntPtr ClassName = Marshal.StringToHGlobalAuto("OpenTK.INativeWindow" + WindowCount++.ToString()); readonly IntPtr ClassName = Marshal.StringToHGlobalAuto("OpenTK.INativeWindow" + WindowCount++.ToString());
readonly WindowProcedure WindowProcedureDelegate; readonly WindowProcedure WindowProcedureDelegate;
readonly UIntPtr ModalLoopTimerId = new UIntPtr(1);
readonly uint ModalLoopTimerPeriod = 1;
UIntPtr timer_handle;
readonly Functions.TimerProc ModalLoopCallback = delegate(IntPtr handle, WindowMessage msg, UIntPtr eventId, int time)
{
// Todo: find a way to notify the frontend that it should process queued up UpdateFrame/RenderFrame events.
};
bool class_registered; bool class_registered;
bool disposed; bool disposed;
@ -131,6 +138,26 @@ namespace OpenTK.Platform.Windows
case WindowMessage.ACTIVATE: case WindowMessage.ACTIVATE:
break; break;
case WindowMessage.ENTERSIZEMOVE:
// Entering the modal size/move loop: we don't want rendering to
// stop during this time, so we register a timer callback to continue
// processing from time to time.
timer_handle = Functions.SetTimer(handle, ModalLoopTimerId, ModalLoopTimerPeriod, ModalLoopCallback);
if (timer_handle == UIntPtr.Zero)
Debug.Print("[Warning] Failed to set modal loop timer callback ({0}:{1}->{2}).",
GetType().Name, handle, Marshal.GetLastWin32Error());
break;
case WindowMessage.EXITSIZEMOVE:
// ExitingmModal size/move loop: the timer callback is no longer
// necessary.
if (!Functions.KillTimer(handle, timer_handle))
Debug.Print("[Warning] Failed to kill modal loop timer callback ({0}:{1}->{2}).",
GetType().Name, handle, Marshal.GetLastWin32Error());
timer_handle = UIntPtr.Zero;
break;
case WindowMessage.NCCALCSIZE: case WindowMessage.NCCALCSIZE:
// Need to update the client rectangle, because it has the wrong size on Vista with Aero enabled. // Need to update the client rectangle, because it has the wrong size on Vista with Aero enabled.
//if (m.WParam == new IntPtr(1)) //if (m.WParam == new IntPtr(1))