private void UpdateFrameExtents(XlibDispatchProvider dispatchProvider, IntPtr display, nuint window)
{
if (dispatchProvider.GetAtomIsSupported(_NET_FRAME_EXTENTS))
{
nuint actualType;
int actualFormat;
nuint itemCount;
nuint bytesRemaining;
nint *cardinals;
_ = XGetWindowProperty(
display,
window,
dispatchProvider.GetAtom(_NET_FRAME_EXTENTS),
0,
4,
False,
XA_CARDINAL,
&actualType,
&actualFormat,
&itemCount,
&bytesRemaining,
(byte **)&cardinals
);
if ((actualType == XA_CARDINAL) && (actualFormat == 32) && (itemCount == 4) && (bytesRemaining == 0))
{
// The cardinals given are left, right, top and bottom; respectively
// Using these, we construct a rectangle that specifies the adjustments
// made to a given client rectangle to compute the non-client size and
// location.
_frameExtents = new Rectangle(
-cardinals[0],
-cardinals[2],
cardinals[1] + cardinals[0],
cardinals[3] + cardinals[2]
);
}
else
{
_frameExtents = default;
}
}
else
{
throw new NotImplementedException();
}
}
private void HandleXPropertyWmHints(XPropertyEvent *xproperty, XlibDispatchProvider dispatchProvider)
{
XWMHints *wmHints = null;
try
{
wmHints = XGetWMHints(xproperty->display, xproperty->window);
_isEnabled = (wmHints != null) &&
((wmHints->flags * InputHint) != 0) &&
(wmHints->input != False);
}
finally
{
if (wmHints != null)
{
_ = XFree(wmHints);
}
}
}
private void UpdateWindowTitle(XlibDispatchProvider dispatchProvider, IntPtr display, nuint window)
{
if (dispatchProvider.GetAtomIsSupported(_NET_WM_NAME))
{
nuint actualType;
int actualFormat;
nuint itemCount;
nuint bytesRemaining;
sbyte *wmName;
_ = XGetWindowProperty(
display,
window,
dispatchProvider.GetAtom(_NET_WM_NAME),
0,
nint.MaxValue,
False,
dispatchProvider.GetAtom(UTF8_STRING),
&actualType,
&actualFormat,
&itemCount,
&bytesRemaining,
(byte **)&wmName
);
if ((actualType == dispatchProvider.GetAtom(UTF8_STRING)) && (actualFormat == 8) && (bytesRemaining == 0))
{
_title = GetUtf8Span(wmName, checked ((int)itemCount)).GetString() ?? string.Empty;
}
else
{
_title = string.Empty;
}
}
else
{
throw new NotImplementedException();
}
}
private void UpdateWindowState(XlibDispatchProvider dispatchProvider, IntPtr display, nuint window)
{
if (dispatchProvider.GetAtomIsSupported(_NET_WM_STATE))
{
nuint actualType;
int actualFormat;
nuint itemCount;
nuint bytesRemaining;
nuint *netWmState;
_ = XGetWindowProperty(
display,
window,
dispatchProvider.GetAtom(_NET_WM_STATE),
0,
nint.MaxValue,
False,
XA_ATOM,
&actualType,
&actualFormat,
&itemCount,
&bytesRemaining,
(byte **)&netWmState
);
if ((actualType == XA_ATOM) && (actualFormat == 32) && (bytesRemaining == 0))
{
var foundNetWmStateFocused = false;
var foundNetWmStateHidden = false;
var foundNetWmStateMaximizedHorz = false;
var foundNetWmStateMaximizedVert = false;
for (nuint i = 0; i < itemCount; i++)
{
if (netWmState[i] == dispatchProvider.GetAtom(_NET_WM_STATE_FOCUSED))
{
foundNetWmStateFocused = true;
}
else if (netWmState[i] == dispatchProvider.GetAtom(_NET_WM_STATE_HIDDEN))
{
foundNetWmStateHidden = true;
}
else if (netWmState[i] == dispatchProvider.GetAtom(_NET_WM_STATE_MAXIMIZED_HORZ))
{
foundNetWmStateMaximizedHorz = true;
}
else if (netWmState[i] == dispatchProvider.GetAtom(_NET_WM_STATE_MAXIMIZED_VERT))
{
foundNetWmStateMaximizedVert = true;
}
}
_isActive = foundNetWmStateFocused;
if (foundNetWmStateHidden)
{
_windowState = WindowState.Minimized;
}
else if (foundNetWmStateMaximizedHorz && foundNetWmStateMaximizedVert)
{
_windowState = WindowState.Maximized;
}
else
{
_windowState = WindowState.Normal;
}
}
else
{
_isActive = false;
_windowState = WindowState.Hidden;
}
}
else
{
throw new NotImplementedException();
}
}
private void HandleXPropertyWmState(XPropertyEvent *xproperty, XlibDispatchProvider dispatchProvider) => UpdateWindowState(dispatchProvider, xproperty->display, xproperty->window);
private void HandleXPropertyNetWmName(XPropertyEvent *xproperty, XlibDispatchProvider dispatchProvider) => UpdateWindowTitle(dispatchProvider, xproperty->display, xproperty->window);
private void HandleXPropertyNetFrameExtents(XPropertyEvent *xproperty, XlibDispatchProvider dispatchProvider) => UpdateFrameExtents(dispatchProvider, xproperty->display, xproperty->window);
private static XlibWindow RemoveWindow(Dictionary <nuint, XlibWindow> windows, IntPtr display, nuint windowHandle, XlibDispatchProvider dispatchProvider)
{
_ = windows.Remove(windowHandle, out var window);
AssertNotNull(window);
if (windows.Count == 0)
{
dispatchProvider.DispatcherForCurrentThread.OnExitRequested();
}
return(window);
}
internal XlibDispatcher(XlibDispatchProvider dispatchProvider, Thread parentThread)
: base(dispatchProvider, parentThread)
{
}