[gtk/icon-fallback] filechooser: Check that icons exist

[Matthias Clasen <matthiasc src gnome org>]

commit 23cb72875d0b4fe684ddbab8e623988a2a803254
Author: Matthias Clasen <mclasen redhat com>
Date:   Fri Mar 26 13:15:19 2021 -0400

    filechooser: Check that icons exist
    
    Otherwise we end up showing missing-image in the
    file chooser, and thats sad.

 gtk/gtkfilechooserutils.c  | 9 +++++----
 gtk/gtkfilechooserutils.h  | 8 +++++---
 gtk/gtkfilechooserwidget.c | 8 +++++++-
 3 files changed, 17 insertions(+), 8 deletions(-)
---
diff --git a/gtk/gtkfilechooserutils.c b/gtk/gtkfilechooserutils.c
index de3ffa15d5..af319303a0 100644
--- a/gtk/gtkfilechooserutils.c
+++ b/gtk/gtkfilechooserutils.c
@@ -447,9 +447,10 @@ _gtk_file_consider_as_remote (GFile *file)
 }
 
 GIcon *
-_gtk_file_info_get_icon (GFileInfo *info,
-                         int        icon_size,
-                         int        scale)
+_gtk_file_info_get_icon (GFileInfo    *info,
+                         int           icon_size,
+                         int           scale,
+                         GtkIconTheme *icon_theme)
 {
   GIcon *icon;
   GdkPixbuf *pixbuf;
@@ -468,7 +469,7 @@ _gtk_file_info_get_icon (GFileInfo *info,
     }
 
   icon = g_file_info_get_icon (info);
-  if (icon)
+  if (icon && gtk_icon_theme_has_gicon (icon_theme, icon))
     return g_object_ref (icon);
 
   /* Use general fallback for all files without icon */
diff --git a/gtk/gtkfilechooserutils.h b/gtk/gtkfilechooserutils.h
index 46625b6c86..9481704ad9 100644
--- a/gtk/gtkfilechooserutils.h
+++ b/gtk/gtkfilechooserutils.h
@@ -21,6 +21,7 @@
 #define __GTK_FILE_CHOOSER_UTILS_H__
 
 #include "gtkfilechooserprivate.h"
+#include "gtkicontheme.h"
 
 G_BEGIN_DECLS
 
@@ -52,9 +53,10 @@ char * _gtk_file_chooser_label_for_file (GFile *file);
 gboolean        _gtk_file_info_consider_as_directory (GFileInfo *info);
 gboolean        _gtk_file_has_native_path (GFile *file);
 gboolean        _gtk_file_consider_as_remote (GFile *file);
-GIcon *               _gtk_file_info_get_icon    (GFileInfo *info,
-                                                  int        icon_size,
-                                                  int        scale);
+GIcon *         _gtk_file_info_get_icon    (GFileInfo    *info,
+                                            int           icon_size,
+                                            int           scale,
+                                            GtkIconTheme *icon_theme);
 
 G_END_DECLS
 
diff --git a/gtk/gtkfilechooserwidget.c b/gtk/gtkfilechooserwidget.c
index f6a58f3218..6f612c1c63 100644
--- a/gtk/gtkfilechooserwidget.c
+++ b/gtk/gtkfilechooserwidget.c
@@ -4448,7 +4448,13 @@ file_system_model_set (GtkFileSystemModel *model,
         {
           if (g_file_info_has_attribute (info, G_FILE_ATTRIBUTE_STANDARD_ICON))
             {
-              g_value_take_object (value, _gtk_file_info_get_icon (info, ICON_SIZE, 
gtk_widget_get_scale_factor (GTK_WIDGET (impl))));
+              int scale;
+              GtkIconTheme *icon_theme;
+
+              scale = gtk_widget_get_scale_factor (GTK_WIDGET (impl));
+              icon_theme = gtk_icon_theme_get_for_display (gtk_widget_get_display (GTK_WIDGET (impl)));
+
+              g_value_take_object (value, _gtk_file_info_get_icon (info, ICON_SIZE, scale, icon_theme));
             }
           else
             {