public unsafe void SetCursor(ICursor cursor)
{
if (_currentCursor == cursor)
{
// Nothing has to be done!
return;
}
if (cursor == null)
{
_currentCursor = null;
GLFW.SetCursor(_glfwWindow, null);
return;
}
if (!(cursor is CursorImpl impl) || impl.Owner != this)
{
throw new ArgumentException("Cursor is not created by this clyde instance.");
}
if (impl.Cursor == null)
{
throw new ObjectDisposedException(nameof(cursor));
}
_currentCursor = impl;
GLFW.SetCursor(_glfwWindow, impl.Cursor);
}
public ICursorImpl GetCursor(StandardCursorType cursorType)
{
if (!Cache.TryGetValue(cursorType, out var rv))
{
rv = new CursorImpl(
UnmanagedMethods.LoadCursor(IntPtr.Zero, new IntPtr(CursorTypeMapping[cursorType])),
false);
Cache.Add(cursorType, rv);
}
return(rv);
}
private unsafe void FlushCursorDisposeQueue()
{
while (_cursorDisposeQueue.TryDequeue(out var cursor))
{
var ptr = (Cursor *)cursor;
if (_currentCursor != null && ptr == _currentCursor.Cursor)
{
// Currently active cursor getting disposed.
_currentCursor = null;
}
GLFW.DestroyCursor(ptr);
}
}
private void InitCursors()
{
unsafe void AddStandardCursor(StandardCursorShape standardShape, CursorShape shape)
{
var ptr = GLFW.CreateStandardCursor(shape);
var impl = new CursorImpl(this, ptr, true);
_standardCursors.Add(standardShape, impl);
}
AddStandardCursor(StandardCursorShape.Arrow, CursorShape.Arrow);
AddStandardCursor(StandardCursorShape.IBeam, CursorShape.IBeam);
AddStandardCursor(StandardCursorShape.Crosshair, CursorShape.Crosshair);
AddStandardCursor(StandardCursorShape.Hand, CursorShape.Hand);
AddStandardCursor(StandardCursorShape.HResize, CursorShape.HResize);
AddStandardCursor(StandardCursorShape.VResize, CursorShape.VResize);
}
