[goffice] css: move css to central place

[Morten Welinder <mortenw src gnome org>]

commit 68eb6050afdf11c2cd8d5b6bb89dd0b12e493c64
Author: Morten Welinder <terra gnome org>
Date:   Sat Dec 2 19:38:41 2017 -0500

    css: move css to central place

 goffice/Makefile.am           |    1 +
 goffice/goffice.c             |    1 +
 goffice/gtk/go-rotation-sel.c |   18 +-----------------
 goffice/gtk/goffice-gtk.c     |   26 ++++++++++++++++++++++++++
 goffice/gtk/goffice-gtk.h     |    5 +++++
 goffice/gtk/goffice.css       |   13 +++++++++++++
 6 files changed, 47 insertions(+), 17 deletions(-)
---
diff --git a/goffice/Makefile.am b/goffice/Makefile.am
index 0fce905..bcff801 100644
--- a/goffice/Makefile.am
+++ b/goffice/Makefile.am
@@ -616,6 +616,7 @@ embedded_stuff_compress = \
        utils/go-style-prefs.ui
 
 embedded_stuff_raw = \
+       gtk/goffice.css                         \
        utils/svg-patterns.xml                  \
        utils/unknown_image.png                 \
        graph/bar-none.png                      \
diff --git a/goffice/goffice.c b/goffice/goffice.c
index 5d2b450..a30cee8 100644
--- a/goffice/goffice.c
+++ b/goffice/goffice.c
@@ -264,6 +264,7 @@ libgoffice_shutdown (void)
        _go_fonts_shutdown ();
        _go_conf_shutdown ();
 #ifdef GOFFICE_WITH_GTK
+       _go_gtk_shutdown ();
        _goc_plugin_services_shutdown ();
 #endif
        _gog_plugin_services_shutdown ();
diff --git a/goffice/gtk/go-rotation-sel.c b/goffice/gtk/go-rotation-sel.c
index 4387554..3537d38 100644
--- a/goffice/gtk/go-rotation-sel.c
+++ b/goffice/gtk/go-rotation-sel.c
@@ -42,10 +42,7 @@ struct _GORotationSel {
 typedef struct {
        GtkGridClass parent_class;
        void (* rotation_changed) (GORotationSel *grs, int angle);
-
-       GtkCssProvider *css_canvas;
 } GORotationSelClass;
-#define GO_ROTATION_SEL_GET_CLASS(obj)    (G_TYPE_INSTANCE_GET_CLASS ((obj), GO_TYPE_ROTATION_SEL, 
GORotationSelClass))
 
 enum {
        ROTATION_CHANGED,
@@ -238,10 +235,7 @@ grs_init (GORotationSel *grs)
        w = go_gtk_builder_get_widget (grs->gui, "toplevel");
        gtk_grid_attach (GTK_GRID (grs), w, 0, 0, 1, 1);
 
-       gtk_style_context_add_provider
-               (gtk_widget_get_style_context (GTK_WIDGET (grs->rotate_canvas)),
-                GTK_STYLE_PROVIDER (GO_ROTATION_SEL_GET_CLASS (grs)->css_canvas),
-                GTK_STYLE_PROVIDER_PRIORITY_FALLBACK);
+       _go_gtk_widget_add_css_provider (GTK_WIDGET (grs->rotate_canvas));
 
        gtk_widget_show_all (GTK_WIDGET (grs));
 }
@@ -262,7 +256,6 @@ grs_finalize (GObject *obj)
 static void
 grs_class_init (GObjectClass *klass)
 {
-       GORotationSelClass *gors_class = (GORotationSelClass *) klass;
        klass->finalize = grs_finalize;
 
        grs_parent_class = g_type_class_peek (gtk_box_get_type ());
@@ -272,15 +265,6 @@ grs_class_init (GObjectClass *klass)
                NULL, NULL,
                g_cclosure_marshal_VOID__INT,
                G_TYPE_NONE, 1, G_TYPE_INT);
-
-       gors_class->css_canvas = gtk_css_provider_new ();
-       gtk_css_provider_load_from_data
-               (gors_class->css_canvas,
-                "GORotationSel GocCanvas {\n"
-                "  background-image: none;\n"
-                "  background-color: white;\n"
-                "}\n",
-                -1, NULL);
 }
 
 GSF_CLASS (GORotationSel, go_rotation_sel,
diff --git a/goffice/gtk/goffice-gtk.c b/goffice/gtk/goffice-gtk.c
index 8ed1085..91ce5b1 100644
--- a/goffice/gtk/goffice-gtk.c
+++ b/goffice/gtk/goffice-gtk.c
@@ -1633,3 +1633,29 @@ go_gtk_widget_render_icon_pixbuf (GtkWidget   *widget,
 
        return res;
 }
+
+static GtkCssProvider *css_provider;
+
+void
+_go_gtk_widget_add_css_provider (GtkWidget *w)
+{
+       g_return_if_fail (GTK_IS_WIDGET (w));
+
+       if (!css_provider) {
+               const char *data = go_rsm_lookup ("go:gtk/goffice.css", NULL);
+               css_provider = gtk_css_provider_new ();
+               gtk_css_provider_load_from_data (css_provider, data, -1, NULL);
+       }
+
+       // NOTE: This applies to *just* this widget.
+       gtk_style_context_add_provider
+               (gtk_widget_get_style_context (w),
+                GTK_STYLE_PROVIDER (css_provider),
+                GTK_STYLE_PROVIDER_PRIORITY_FALLBACK);
+}
+
+void
+_go_gtk_shutdown (void)
+{
+       g_clear_object (&css_provider);
+}
diff --git a/goffice/gtk/goffice-gtk.h b/goffice/gtk/goffice-gtk.h
index 33d2e24..52ca7e6 100644
--- a/goffice/gtk/goffice-gtk.h
+++ b/goffice/gtk/goffice-gtk.h
@@ -56,6 +56,11 @@
 
 G_BEGIN_DECLS
 
+void       _go_gtk_shutdown (void);
+
+// Add goffice-specific css provider
+void       _go_gtk_widget_add_css_provider (GtkWidget *w);
+
 void      go_gtk_editable_enters (GtkWindow *window, GtkWidget *w);
 
 GtkBuilder *go_gtk_builder_load_internal (char const *uifile,
diff --git a/goffice/gtk/goffice.css b/goffice/gtk/goffice.css
new file mode 100644
index 0000000..c54011d
--- /dev/null
+++ b/goffice/gtk/goffice.css
@@ -0,0 +1,13 @@
+/*
+ * css bindings for goffice.
+ *
+ * These are loaded with "fallback" priority, i.e., everything else will
+ * override them.
+ */
+
+/* ------------------------------------------------------------------------- */
+
+GORotationSel GocCanvas {
+  background-image: none;
+  background-color: blue;
+}