1 files changed, 22 insertions, 0 deletions

diff --git a/src/macterm.c b/src/macterm.c
index 9a2d6e2a35d..c86ad0ffde3 100644
--- a/src/macterm.c
+++ b/src/macterm.c
@@ -8338,6 +8338,25 @@ x_find_ccl_program (fontp)
 }
 
 #if USE_MAC_FONT_PANEL
+/* The first call to font panel functions (FPIsFontPanelVisible,
+   SetFontInfoForSelection) is slow.  This variable is used for
+   deferring such a call as much as possible.  */
+static int font_panel_shown_p = 0;
+
+int
+mac_font_panel_visible_p ()
+{
+  return font_panel_shown_p && FPIsFontPanelVisible ();
+}
+
+OSStatus
+mac_show_hide_font_panel ()
+{
+  font_panel_shown_p = 1;
+
+  return FPShowHideFontPanel ();
+}
+
 OSStatus
 mac_set_font_info_for_selection (f, face_id, c)
      struct frame *f;
@@ -8347,6 +8366,9 @@ mac_set_font_info_for_selection (f, face_id, c)
   EventTargetRef target = NULL;
   XFontStruct *font = NULL;
 
+  if (!mac_font_panel_visible_p ())
+    return noErr;
+
   if (f)
     {
       target = GetWindowEventTarget (FRAME_MAC_WINDOW (f));