bug#55463: [PATCH] Fix font options compilation with gsettings disabled

[Pieter van Prooijen <pieter.van.prooijen@teloden.nl>]

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Hi, 

I've reverted the change in the comment, here's the patch without that
change.

Kind Regards,

Pieter

On Tue, 2022-05-17 at 09:05 +0800, Po Lu wrote:
> Pieter van Prooijen <pieter.van.prooijen@teloden.nl> writes:
> 
> > Hello All,
> > 
> > This is a small patch to make the recent gsettings font rendering
> > changes compile when pgtk is configured but gsettings is not.
> 
> Thanks.
> 
> > -/* Return the cairo font options, updated from the gsettings font
> > -   config entries.  The caller should call
> > cairo_font_options_destroy
> > -   on the result.  */
> > +/* Return the cairo font options, optionally updated from the
> > gsettings
> > +   font config entries.  The caller should call
> > +   cairo_font_options_destroy on the result.  */
> 
> I think this change is extraneous.  That comment doesn't have to be
> so
> detailed, since building Emacs without GSettings support is a rather
> oddball configuration, and it obviously cannot be used without
> support
> being built-in.
> 
> Otherwise, LGTM.


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From 3548e6dbc5e820a48f0ed4885a912ead39f9bf94 Mon Sep 17 00:00:00 2001
From: Pieter van Prooijen <pieter.van.prooijen@teloden.nl>
Date: Mon, 16 May 2022 15:20:27 +0200
Subject: [PATCH] Fix font options compilation with gsettings disabled

* src/xsettings.c (xsettings_get_font_options): Return a font_options
even if gsettings is not enabled.
---
 src/xsettings.c | 17 +++++++++++------
 1 file changed, 11 insertions(+), 6 deletions(-)

diff --git a/src/xsettings.c b/src/xsettings.c
index 2e33ef958a..45341d8ebd 100644
--- a/src/xsettings.c
+++ b/src/xsettings.c
@@ -206,6 +206,11 @@ #define XSETTINGS_TOOL_BAR_STYLE  "Gtk/ToolbarStyle"
   unsigned seen;
 };
 
+#ifdef HAVE_PGTK
+/* The cairo font_options as obtained using gsettings.  */
+static cairo_font_options_t *font_options;
+#endif
+
 #ifdef HAVE_GSETTINGS
 #define GSETTINGS_SCHEMA         "org.gnome.desktop.interface"
 #define GSETTINGS_TOOL_BAR_STYLE "toolbar-style"
@@ -225,11 +230,6 @@ #define GSETTINGS_FONT_HINTING       "font-hinting"
 
 static GSettings *gsettings_client;
 
-#ifdef HAVE_PGTK
-
-/* The cairo font_options as obtained using gsettings.  */
-static cairo_font_options_t *font_options;
-
 static bool
 xg_settings_key_valid_p (GSettings *settings, const char *key)
 {
@@ -253,6 +253,7 @@ xg_settings_key_valid_p (GSettings *settings, const char *key)
 #endif
 }
 
+#ifdef HAVE_PGTK
 /* Store an event for re-rendering of the fonts.  */
 static void
 store_font_options_changed (void)
@@ -1206,7 +1207,11 @@ xsettings_get_system_normal_font (void)
 cairo_font_options_t *
 xsettings_get_font_options (void)
 {
-  return cairo_font_options_copy (font_options);
+  if (font_options != NULL)
+    return cairo_font_options_copy (font_options);
+  else
+    /* GSettings is not configured.  */
+    return cairo_font_options_create ();
 }
 #endif
 
-- 
2.34.1