[gthumb] use different css for different versions of gtk+

[Paolo Bacchilega <paobac src gnome org>]

commit 8633276e30a85fa8f1491d32acc8bc6ead108ad4
Author: Paolo Bacchilega <paobac src gnome org>
Date:   Sun Mar 29 22:23:11 2015 +0200

    use different css for different versions of gtk+

 gthumb/gth-window.c                |   27 +++++++++++++++++++--------
 gthumb/gthumb.gresource.xml        |    2 ++
 gthumb/resources/Makefile.am       |    2 ++
 gthumb/resources/gthumb-gtk312.css |    7 +++++++
 gthumb/resources/gthumb-gtk314.css |    7 +++++++
 gthumb/resources/gthumb.css        |    8 --------
 6 files changed, 37 insertions(+), 16 deletions(-)
---
diff --git a/gthumb/gth-window.c b/gthumb/gth-window.c
index a63f5f9..ef8a8c6 100644
--- a/gthumb/gth-window.c
+++ b/gthumb/gth-window.c
@@ -252,21 +252,17 @@ gth_window_real_set_current_page (GthWindow *window,
 
 
 static void
-gth_window_realize (GtkWidget *widget)
+_gth_window_add_css_provider (GtkWidget  *widget,
+                             const char *path)
 {
-       GdkScreen      *screen;
        GBytes         *bytes;
        gconstpointer   css_data;
        gsize           css_data_size;
        GtkCssProvider *css_provider;
        GError         *error = NULL;
 
-       GTK_WIDGET_CLASS (gth_window_parent_class)->realize (widget);
-
-       screen = gtk_widget_get_screen (widget);
-       gtk_icon_theme_append_search_path (gtk_icon_theme_get_for_screen (screen), GTHUMB_ICON_DIR);
 
-       bytes = g_resources_lookup_data ("/org/gnome/gThumb/resources/gthumb.css", 0, &error);
+       bytes = g_resources_lookup_data (path, 0, &error);
        if (bytes == NULL) {
                g_warning ("%s", error->message);
                g_error_free (error);
@@ -279,7 +275,7 @@ gth_window_realize (GtkWidget *widget)
                g_warning ("%s", error->message);
                g_error_free (error);
        }
-       gtk_style_context_add_provider_for_screen (screen,
+       gtk_style_context_add_provider_for_screen (gtk_widget_get_screen (widget),
                                                   GTK_STYLE_PROVIDER (css_provider),
                                                   GTK_STYLE_PROVIDER_PRIORITY_APPLICATION);
 
@@ -289,6 +285,21 @@ gth_window_realize (GtkWidget *widget)
 
 
 static void
+gth_window_realize (GtkWidget *widget)
+{
+       GTK_WIDGET_CLASS (gth_window_parent_class)->realize (widget);
+
+       gtk_icon_theme_append_search_path (gtk_icon_theme_get_for_screen (gtk_widget_get_screen (widget)), 
GTHUMB_ICON_DIR);
+
+       _gth_window_add_css_provider (widget, "/org/gnome/gThumb/resources/gthumb.css");
+       if ((gtk_major_version >= 3) && (gtk_minor_version >= 14))
+               _gth_window_add_css_provider (widget, "/org/gnome/gThumb/resources/gthumb-gtk314.css");
+       else if ((gtk_major_version >= 3) && (gtk_minor_version >= 10))
+               _gth_window_add_css_provider (widget, "/org/gnome/gThumb/resources/gthumb-gtk312.css");
+}
+
+
+static void
 gth_window_class_init (GthWindowClass *klass)
 {
        GObjectClass   *gobject_class;
diff --git a/gthumb/gthumb.gresource.xml b/gthumb/gthumb.gresource.xml
index 78a7c4d..5d508e1 100644
--- a/gthumb/gthumb.gresource.xml
+++ b/gthumb/gthumb.gresource.xml
@@ -7,6 +7,8 @@
     <file compressed="true">resources/folder-menu.ui</file>
     <file compressed="true">resources/gears-menu.ui</file>
     <file compressed="true">resources/gthumb.css</file>
+    <file compressed="true">resources/gthumb-gtk312.css</file>
+    <file compressed="true">resources/gthumb-gtk314.css</file>
     <file compressed="true">resources/history-menu.ui</file>
   </gresource>
 </gresources>
diff --git a/gthumb/resources/Makefile.am b/gthumb/resources/Makefile.am
index a9037db..58b771d 100644
--- a/gthumb/resources/Makefile.am
+++ b/gthumb/resources/Makefile.am
@@ -5,6 +5,8 @@ EXTRA_DIST =                    \
        folder-menu.ui          \
        gears-menu.ui           \
        gthumb.css              \
+       gthumb-gtk312.css       \
+       gthumb-gtk314.css       \
        history-menu.ui
 
 -include $(top_srcdir)/git.mk
\ No newline at end of file
diff --git a/gthumb/resources/gthumb-gtk312.css b/gthumb/resources/gthumb-gtk312.css
new file mode 100644
index 0000000..6a51363
--- /dev/null
+++ b/gthumb/resources/gthumb-gtk312.css
@@ -0,0 +1,7 @@
+/* -- preview button in the filter grid -- */
+
+GtkButton.filter-preview:active {
+       background-image: none;
+       background-color: @theme_selected_bg_color;
+       color: @theme_selected_fg_color;
+}
diff --git a/gthumb/resources/gthumb-gtk314.css b/gthumb/resources/gthumb-gtk314.css
new file mode 100644
index 0000000..b797a5a
--- /dev/null
+++ b/gthumb/resources/gthumb-gtk314.css
@@ -0,0 +1,7 @@
+/* -- preview button in the filter grid -- */
+
+GtkButton.filter-preview:checked {
+       background-image: none;
+       background-color: @theme_selected_bg_color;
+       color: @theme_selected_fg_color;
+}
diff --git a/gthumb/resources/gthumb.css b/gthumb/resources/gthumb.css
index f6876c6..8e799ff 100644
--- a/gthumb/resources/gthumb.css
+++ b/gthumb/resources/gthumb.css
@@ -138,14 +138,6 @@ GtkLabel.extension-description {
        background-color: #000;
 }
 
-/* -- preview button in the filter grid -- */
-
-GtkButton.filter-preview:checked {
-       background-image: none;
-       background-color: @theme_unfocused_selected_bg_color;
-       color: @theme_unfocused_selected_fg_color;
-}
-
 /* -- header-bar inside the toolbox -- */
 
 GthToolbox .header-bar {