X11: Use cursor themes

This changes to getting cursors by name from the cursor theme, which makes the
cursor match the ones used in modern desktop environments.  As far as I can
tell, there is no real standard for names, these ones seem to work for me in
GNOME, KDE, and Xfce.

I am not sure about the compatibility concerns here, but X11 without Xcursor
themes strikes me as either too esoteric or too ancient to worry about,
especially since cursor switching isn't critical functionality anyway.

1 files changed, 1 insertions, 3 deletions

diff --git a/src/x11.h b/src/x11.h
index f85b227..720dbeb 100644
--- a/src/x11.h
+++ b/src/x11.h
@@ -56,9 +56,7 @@ struct PuglInternalsImpl {
   PuglEvent    pendingConfigure;
   PuglEvent    pendingExpose;
   int          screen;
-#ifdef HAVE_XCURSOR
-  unsigned cursorShape;
-#endif
+  const char*  cursorName;
 };
 
 PUGL_WARN_UNUSED_RESULT