[gnumeric] GUI: Make function marker size themable.

[Morten Welinder <mortenw src gnome org>]

commit 6252a9de6a718eeba8e20cb6651eb1d628c8c215
Author: Morten Welinder <terra gnome org>
Date:   Mon Mar 25 14:04:38 2013 -0400

    GUI: Make function marker size themable.

 src/gnumeric.css |    1 +
 src/item-grid.c  |   17 ++++++++++++-----
 2 files changed, 13 insertions(+), 5 deletions(-)
---
diff --git a/src/gnumeric.css b/src/gnumeric.css
index 8ca91b8..3e4f99f 100644
--- a/src/gnumeric.css
+++ b/src/gnumeric.css
@@ -8,6 +8,7 @@ ItemGrid {
 ItemGrid function-marker {
   color: green;
   border-color: #555555;
+  border-radius: 10px;  /* Cheesy overload of property. */
 }
 
 /* This is the divider between panes when an area is frozen.  */
diff --git a/src/item-grid.c b/src/item-grid.c
index 206f08e..6218369 100644
--- a/src/item-grid.c
+++ b/src/item-grid.c
@@ -83,6 +83,7 @@ struct _ItemGrid {
        /* Style: */
        GdkRGBA function_marker_color;
        GdkRGBA function_marker_border_color;
+       int function_marker_size;
 
        GdkRGBA pane_divider_color;
        int pane_divider_width;
@@ -103,13 +104,18 @@ ig_reload_style (ItemGrid *ig)
        GocItem *item = GOC_ITEM (ig);
        GtkStyleContext *context = goc_item_get_style_context (item);
        GtkBorder border;
+       GtkStateFlags state = GTK_STATE_FLAG_NORMAL;
 
        gtk_style_context_save (context);
        gtk_style_context_add_region (context, "function-marker", 0);
        gtk_style_context_get_color (context, GTK_STATE_FLAG_NORMAL,
                                     &ig->function_marker_color);
-       gtk_style_context_get_border_color (context, GTK_STATE_FLAG_NORMAL,
+       gtk_style_context_get_border_color (context, state,
                                            &ig->function_marker_border_color);
+       gtk_style_context_get (context, state,
+                              "border-radius",
+                              &ig->function_marker_size,
+                              NULL);
        gtk_style_context_restore (context);
 
        gtk_style_context_save (context);
@@ -236,6 +242,7 @@ draw_function_marker (ItemGrid *ig,
                      GnmCell const *cell, cairo_t *cr,
                      double x, double y, double w, double h, int const dir)
 {
+       int size = ig->function_marker_size;
        if (cell == NULL || !gnm_cell_has_expr (cell))
                return;
 
@@ -246,12 +253,12 @@ draw_function_marker (ItemGrid *ig,
        cairo_new_path (cr);
        if (dir > 0) {
                cairo_move_to (cr, x, y);
-               cairo_line_to (cr, x + 10., y);
-               cairo_arc (cr, x, y, 10., 0., M_PI / 2.);
+               cairo_line_to (cr, x + size, y);
+               cairo_arc (cr, x, y, size, 0., M_PI / 2.);
        } else {
                cairo_move_to (cr, x + w, y);
-               cairo_line_to (cr, x + w, y + 10.);
-               cairo_arc (cr, x + w, y, 10., M_PI/2., M_PI);
+               cairo_line_to (cr, x + w, y + size);
+               cairo_arc (cr, x + w, y, size, M_PI/2., M_PI);
        }
        cairo_close_path (cr);
        gdk_cairo_set_source_rgba (cr, &ig->function_marker_color);