[nautilus/wip/antoniof/gtk4-pre-switch-regressions: 51/54] icon-info: Stop using gtk_icon_theme_choose_icon_for_scale()




commit 30d4cf41348673c4aec7cd2e7b1068c04152c3c1
Author: António Fernandes <antoniof gnome org>
Date:   Wed Dec 22 21:09:07 2021 +0000

    icon-info: Stop using gtk_icon_theme_choose_icon_for_scale()
    
    This non-GIcon API is gone in GTK 4.
    
    The forward-compatible way is to lookup by GIcon. Actually, we already
    have a GIcon anyway, and we are going the long way of getting its icon
    names to pass to the non-GIcon API.
    
    So, just use gtk_icon_theme_lookup_by_gicon_for_scale(). Also, remove
    a lot of now-redundant code. This is going to help switching to GTK 4.

 src/nautilus-icon-info.c | 70 ++++++++++++++----------------------------------
 1 file changed, 20 insertions(+), 50 deletions(-)
---
diff --git a/src/nautilus-icon-info.c b/src/nautilus-icon-info.c
index c4586da3d..48b18fd0e 100644
--- a/src/nautilus-icon-info.c
+++ b/src/nautilus-icon-info.c
@@ -336,6 +336,8 @@ nautilus_icon_info_lookup (GIcon *icon,
                            int    scale)
 {
     NautilusIconInfo *icon_info;
+    g_autoptr (GtkIconInfo) gtkicon_info = NULL;
+    GtkIconTheme *icon_theme;
 
     if (G_IS_LOADABLE_ICON (icon))
     {
@@ -384,13 +386,19 @@ nautilus_icon_info_lookup (GIcon *icon,
 
         return g_object_ref (icon_info);
     }
-    else if (G_IS_THEMED_ICON (icon))
+
+    icon_theme = gtk_icon_theme_get_default ();
+    gtkicon_info = gtk_icon_theme_lookup_by_gicon_for_scale (icon_theme, icon,
+                                                             size, scale, 0);
+    if (gtkicon_info == NULL)
+    {
+        return nautilus_icon_info_new_for_pixbuf (NULL, scale);
+    }
+
+    if (G_IS_THEMED_ICON (icon))
     {
-        const char * const *names;
         ThemedIconKey lookup_key;
         ThemedIconKey *key;
-        GtkIconTheme *icon_theme;
-        GtkIconInfo *gtkicon_info;
         const char *filename;
 
         if (themed_icon_cache == NULL)
@@ -402,17 +410,6 @@ nautilus_icon_info_lookup (GIcon *icon,
                                        (GDestroyNotify) g_object_unref);
         }
 
-        names = g_themed_icon_get_names (G_THEMED_ICON (icon));
-
-        icon_theme = gtk_icon_theme_get_default ();
-        gtkicon_info = gtk_icon_theme_choose_icon_for_scale (icon_theme, (const char **) names,
-                                                             size, scale, GTK_ICON_LOOKUP_FORCE_SIZE);
-
-        if (gtkicon_info == NULL)
-        {
-            return nautilus_icon_info_new_for_pixbuf (NULL, scale);
-        }
-
         filename = gtk_icon_info_get_filename (gtkicon_info);
         if (filename == NULL)
         {
@@ -425,49 +422,22 @@ nautilus_icon_info_lookup (GIcon *icon,
         lookup_key.size = size;
 
         icon_info = g_hash_table_lookup (themed_icon_cache, &lookup_key);
-        if (icon_info)
+        if (!icon_info)
         {
-            g_object_unref (gtkicon_info);
-            return g_object_ref (icon_info);
-        }
+            icon_info = nautilus_icon_info_new_for_icon_info (gtkicon_info, scale);
 
-        icon_info = nautilus_icon_info_new_for_icon_info (gtkicon_info, scale);
-
-        key = themed_icon_key_new (filename, scale, size);
-        g_hash_table_insert (themed_icon_cache, key, icon_info);
-
-        g_object_unref (gtkicon_info);
+            key = themed_icon_key_new (filename, scale, size);
+            g_hash_table_insert (themed_icon_cache, key, icon_info);
+        }
 
         return g_object_ref (icon_info);
     }
     else
     {
-        GdkPixbuf *pixbuf;
-        GtkIconInfo *gtk_icon_info;
-
-        gtk_icon_info = gtk_icon_theme_lookup_by_gicon_for_scale (gtk_icon_theme_get_default (),
-                                                                  icon,
-                                                                  size,
-                                                                  scale,
-                                                                  GTK_ICON_LOOKUP_FORCE_SIZE);
-        if (gtk_icon_info != NULL)
-        {
-            pixbuf = gtk_icon_info_load_icon (gtk_icon_info, NULL);
-            g_object_unref (gtk_icon_info);
-        }
-        else
-        {
-            pixbuf = NULL;
-        }
-
-        icon_info = nautilus_icon_info_new_for_pixbuf (pixbuf, scale);
-
-        if (pixbuf != NULL)
-        {
-            g_object_unref (pixbuf);
-        }
+        g_autoptr (GdkPixbuf) pixbuf = NULL;
 
-        return icon_info;
+        pixbuf = gtk_icon_info_load_icon (gtkicon_info, NULL);
+        return nautilus_icon_info_new_for_pixbuf (pixbuf, scale);
     }
 }
 


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