[PATCH 3/4] gdi32: Update default font AA parameters on system parameters update.

[Paul Gofman]

Wine-Bug: https://bugs.winehq.org/show_bug.cgi?id=45857
Signed-off-by: Paul Gofman <pgofman at codeweavers.com>
---
 dlls/gdi32/font.c | 33 +++++++++++++++++++++++++++++++++
 1 file changed, 33 insertions(+)

diff --git a/dlls/gdi32/font.c b/dlls/gdi32/font.c
index cb170c0b862..9a860f103a4 100644
--- a/dlls/gdi32/font.c
+++ b/dlls/gdi32/font.c
@@ -42,6 +42,8 @@ WINE_DEFAULT_DEBUG_CHANNEL(font);
 
 static HKEY wine_fonts_key;
 static HKEY wine_fonts_cache_key;
+static HKEY volatile_parameters_key;
+static HANDLE volatile_parameters_changed_event;
 
 struct font_physdev
 {
@@ -97,6 +99,8 @@ static struct font_gamma_ramp font_gamma_ramp;
 static void add_face_to_cache( struct gdi_font_face *face );
 static void remove_face_from_cache( struct gdi_font_face *face );
 
+static void update_font_options(void);
+
 static inline WCHAR facename_tolower( WCHAR c )
 {
     if (c >= 'A' && c <= 'Z') return c - 'A' + 'a';
@@ -3739,6 +3743,8 @@ static HFONT CDECL font_SelectFont( PHYSDEV dev, HFONT hfont, UINT *aa_flags )
             *aa_flags = font->aa_flags;
             if (!*aa_flags)
             {
+                update_font_options();
+
                 if (lf.lfQuality == CLEARTYPE_QUALITY || lf.lfQuality == CLEARTYPE_NATURAL_QUALITY)
                     *aa_flags = subpixel_orientation;
                 else
@@ -3919,6 +3925,9 @@ static void init_font_options(void)
         antialias_fakes = (wcschr(L"yYtT1", buffer[0]) != NULL);
     }
 
+    font_smoothing = 0;
+    subpixel_orientation = 0;
+
     if (!RegOpenKeyW( HKEY_CURRENT_USER, L"Control Panel\\Desktop", &key ))
     {
         RegOpenKeyW( HKEY_CURRENT_USER, L"Software\\Wine\\Temporary System Parameters\\Control Panel\\Desktop",
@@ -3965,6 +3974,30 @@ static void init_font_options(void)
     TRACE("gamma %d\n", font_gamma_ramp.gamma);
 }
 
+static void update_font_options(void)
+{
+    EnterCriticalSection( &font_cs );
+    if (!volatile_parameters_key)
+    {
+        if (RegOpenKeyW( HKEY_CURRENT_USER, L"Software\\Wine\\Temporary System Parameters\\Control Panel\\Desktop",
+                &volatile_parameters_key ))
+            goto done;
+        volatile_parameters_changed_event = CreateEventA( NULL, FALSE, TRUE, NULL );
+    }
+    if (WaitForSingleObject( volatile_parameters_changed_event, 0 ) == WAIT_OBJECT_0)
+    {
+        if (RegNotifyChangeKeyValue( volatile_parameters_key, FALSE,
+                REG_NOTIFY_CHANGE_NAME | REG_NOTIFY_CHANGE_LAST_SET | REG_NOTIFY_THREAD_AGNOSTIC,
+                volatile_parameters_changed_event, TRUE))
+            ERR("Error registering registry change notification.\n");
+
+        init_font_options();
+    }
+
+done:
+    LeaveCriticalSection( &font_cs );
+}
+
 
 static void FONT_LogFontAToW( const LOGFONTA *fontA, LPLOGFONTW fontW )
 {
-- 
2.28.0