widgets, themes: Fix bug with selection...

background color. Resolves #9983.

We now check the parent widget's color
first to prevent issues with the selection
altering the background color of the
icon until the view is refreshed.
As a result, we can now define the
selected color of an icon, fixing a
regression from 2.10.

app/widgets/gimpcontainericonview.c

@@ -132,6 +132,8 @@ gimp_container_icon_view_class_init (GimpContainerIconViewClass *klass)
 
   widget_class->unmap       = gimp_container_icon_view_unmap;
   widget_class->popup_menu  = gimp_container_icon_view_popup_menu;
+
+  gtk_widget_class_set_css_name (widget_class, "GimpContainerIconView");
 }
 
 static void

app/widgets/gimpviewrenderer.c

@@ -1182,11 +1182,27 @@ gimp_view_render_temp_buf_to_surface (GimpViewRenderer *renderer,
         GtkStyleContext *style;
         GdkRGBA         *color = NULL;
 
-        style = gtk_widget_get_style_context (widget);
+        /* Try to get the parent's color first to prevent issues with
+         * changes in preselected backgrounds. If not set though, go for
+         * the current's widget's color instead */
+        style = gtk_widget_get_style_context (gtk_widget_get_parent (widget));
         gtk_style_context_get (style, gtk_style_context_get_state (style),
                                GTK_STYLE_PROPERTY_BACKGROUND_COLOR, &color,
                                NULL);
 
+        if (color             &&
+            color->red   == 0 &&
+            color->green == 0 &&
+            color->blue  == 0)
+          {
+            gdk_rgba_free (color);
+
+            style = gtk_widget_get_style_context (widget);
+            gtk_style_context_get (style, gtk_style_context_get_state (style),
+                                   GTK_STYLE_PROPERTY_BACKGROUND_COLOR, &color,
+                                   NULL);
+          }
+
         if (color)
           {
             cairo_set_source_rgb (cr, color->red, color->green, color->blue);

themes/Default/common-dark.css

@@ -10,11 +10,6 @@
 
 @import url("common.css");
 
-/* Highlight icons in Grid View when hovered over */
-iconview:hover {
-  background-color: @fg-color;
-}
-
 /*
  * Paned separator handles
  */

themes/Default/common-light.css

@@ -10,11 +10,6 @@
 
 @import url("common.css");
 
-/* Highlight icons in Grid View when hovered over */
-iconview:hover {
-  background-color: @strong-border-color;
-}
-
 /*
  * Paned separator handles
  */

themes/Default/common.css

@@ -437,6 +437,20 @@ paned menu separator {
     padding: 0px;
 }
 
+
+/* Highlight icons in Grid View when hovered over */
+iconview:hover {
+  border: 2px solid @dimmed-fg-color;
+}
+
+iconview:selected {
+  border: 2px solid @fg-color;
+}
+
+GimpContainerIconView scrolledwindow {
+  background-color: @extreme-bg-color;
+}
+
 .view button {
   background-color: @bg-color;
   border-color: @border-color;