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* XI2Mouse.cs:

Browse source 
* X11Factory.cs: Detect whether XInput2 is not supported without
  throwing an exception.
This commit is contained in:
the_fiddler 2010-10-22 07:41:56 +00:00
parent eeefbd1a9c
commit 4d2759eb78
2 changed files with 35 additions and 23 deletions
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13
Source/OpenTK/Platform/X11/X11Factory.cs
View file

@ -85,15 +85,10 @@ namespace OpenTK.Platform.X11
public virtual OpenTK.Input.IMouseDriver CreateMouseDriver()
{
try
{
// Only supported on xorg 1.7 or higher.
return new XI2Mouse(null);
}
catch (NotSupportedException) { }
// Should always be supported.
return new X11Mouse(null);
if (XI2Mouse.IsSupported(IntPtr.Zero))
return new XI2Mouse(null); // Requires xorg 1.7 or higher.
else
return new X11Mouse(null); // Always supported.
}
#endregion

45
Source/OpenTK/Platform/X11/XI2Mouse.cs
View file

@ -41,7 +41,7 @@ namespace OpenTK.Platform.X11
Dictionary<int, int> rawids = new Dictionary<int, int>(); // maps raw ids to mouse ids
int first_mouse;
readonly X11WindowInfo window;
readonly int XIOpCode;
static int XIOpCode;
static readonly Functions.EventPredicate PredicateImpl = IsEventValid;
readonly IntPtr Predicate = Marshal.GetFunctionPointerForDelegate(PredicateImpl);
@ -65,25 +65,40 @@ namespace OpenTK.Platform.X11
}
}
using (new XLock(window.Display))
{
int major, ev, error;
if (Functions.XQueryExtension(window.Display, "XInputExtension", out major, out ev, out error) == 0)
{
Debug.WriteLine("XInput2 not supported.");
throw new NotSupportedException();
}
XIOpCode = major;
if (!IsSupported(window.Display))
throw new NotSupportedException("XInput2 not supported.");
using (XIEventMask mask = new XIEventMask(1, XIEventMasks.RawButtonPressMask |
using (XIEventMask mask = new XIEventMask(1, XIEventMasks.RawButtonPressMask |
XIEventMasks.RawButtonReleaseMask | XIEventMasks.RawMotionMask))
{
Functions.XISelectEvents(window.Display, window.WindowHandle, mask);
}
{
Functions.XISelectEvents(window.Display, window.WindowHandle, mask);
}
Debug.WriteLine("Using XI2Mouse.");
}
// Checks whether XInput2 is supported on the specified display.
// If a display is not specified, the default display is used.
internal static bool IsSupported(IntPtr display)
{
if (display == IntPtr.Zero)
display = API.DefaultDisplay;
using (new XLock(display))
{
int major, ev, error;
if (Functions.XQueryExtension(display, "XInputExtension", out major, out ev, out error) == 0)
{
return false;
}
XIOpCode = major;
}
return true;
}
#region IMouseDriver Members
// Todo: remove this
public IList<MouseDevice> Mouse { get { throw new NotSupportedException(); } }
@ -105,6 +120,8 @@ namespace OpenTK.Platform.X11
return new MouseState();
}
#endregion
void ProcessEvents()
{
while (true)