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[X11] Check before monitoring /dev/input

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This avoids a crash on non-Linux systems that do not support /dev/input.
This commit is contained in:
thefiddler 2014-06-15 14:29:07 +02:00
parent 40f1668989
commit c657b3d11e
1 changed files with 19 additions and 23 deletions
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42
Source/OpenTK/Platform/X11/X11Joystick.cs
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@ -42,14 +42,14 @@ namespace OpenTK.Platform.X11
public JoystickState State;
}
// Note: despite what the name says, this class is Linux-specific.
sealed class X11Joystick : IJoystickDriver2
{
#region Fields
readonly object sync = new object();
readonly FileSystemWatcher watcher = new FileSystemWatcher(JoystickPath);
readonly FileSystemWatcher watcher_legacy = new FileSystemWatcher(JoystickPathLegacy);
readonly FileSystemWatcher watcher = new FileSystemWatcher();
readonly Dictionary<int, int> index_to_stick = new Dictionary<int, int>();
List<JoystickDevice<X11JoyDetails>> sticks = new List<JoystickDevice<X11JoyDetails>>();
@ -62,43 +62,38 @@ namespace OpenTK.Platform.X11
public X11Joystick()
{
watcher.Created += JoystickAdded;
watcher.Deleted += JoystickRemoved;
watcher.EnableRaisingEvents = true;
string path =
Directory.Exists(JoystickPath) ? JoystickPath :
Directory.Exists(JoystickPathLegacy) ? JoystickPathLegacy :
String.Empty;
watcher_legacy.Created += JoystickAdded;
watcher_legacy.Deleted += JoystickRemoved;
watcher_legacy.EnableRaisingEvents = true;
if (!String.IsNullOrEmpty(path))
{
watcher.Path = path;
OpenJoysticks();
watcher.Created += JoystickAdded;
watcher.Deleted += JoystickRemoved;
watcher.EnableRaisingEvents = true;
OpenJoysticks(path);
}
}
#endregion
#region Private Members
void OpenJoysticks()
void OpenJoysticks(string path)
{
lock (sync)
{
foreach (string file in Directory.GetFiles(JoystickPath))
foreach (string file in Directory.GetFiles(path))
{
JoystickDevice<X11JoyDetails> stick = OpenJoystick(file);
if (stick != null)
{
//stick.Description = String.Format("USB Joystick {0} ({1} axes, {2} buttons, {3}{0})",
//number, stick.Axis.Count, stick.Button.Count, JoystickPath);
sticks.Add(stick);
}
}
foreach (string file in Directory.GetFiles(JoystickPathLegacy))
{
JoystickDevice<X11JoyDetails> stick = OpenJoystick(file);
if (stick != null)
{
//stick.Description = String.Format("USB Joystick {0} ({1} axes, {2} buttons, {3}{0})",
//number, stick.Axis.Count, stick.Button.Count, JoystickPathLegacy);
//number, stick.Axis.Count, stick.Button.Count, path);
sticks.Add(stick);
}
}
@ -447,6 +442,7 @@ namespace OpenTK.Platform.X11
{
}
watcher.Dispose();
foreach (JoystickDevice<X11JoyDetails> js in sticks)
{
CloseJoystick(js);