Add keyboard shortcut to tooltip text where possible.

[ardour.git] / gtk2_ardour / gtk-custom-hruler.c

diff --git a/gtk2_ardour/gtk-custom-hruler.c b/gtk2_ardour/gtk-custom-hruler.c
index 840b17ece38dbbabdbb3c4ccb6000cbf03815be7..61a34a7c418a61bc7feffec1a16f3fdef3b27e64 100644 (file)
--- a/gtk2_ardour/gtk-custom-hruler.c
+++ b/gtk2_ardour/gtk-custom-hruler.c
@@ -21,7 +21,7 @@
  * Modified by the GTK+ Team and others 1997-1999.  See the AUTHORS
  * file for a list of people on the GTK+ Team.  See the ChangeLog
  * files for a list of changes.  These files are distributed with
- * GTK+ at ftp://ftp.gtk.org/pub/gtk/. 
+ * GTK+ at ftp://ftp.gtk.org/pub/gtk/.
  */
 
 /* modified by andreas meyer <hexx3000@gmx.de> */
@@ -44,24 +44,30 @@ static gint gtk_custom_hruler_motion_notify (GtkWidget * widget, GdkEventMotion
 static void gtk_custom_hruler_draw_ticks (GtkCustomRuler * ruler);
 static void gtk_custom_hruler_draw_pos (GtkCustomRuler * ruler);
 
-guint gtk_custom_hruler_get_type (void)
+GType gtk_custom_hruler_get_type (void)
 {
-       static guint custom_hruler_type = 0;
-
-       if (!custom_hruler_type) {
-               static const GtkTypeInfo custom_hruler_info = {
-                       "GtkCustomHRuler",
-                       sizeof (GtkCustomHRuler),
-                       sizeof (GtkCustomHRulerClass),
-                       (GtkClassInitFunc) gtk_custom_hruler_class_init,
-                       (GtkObjectInitFunc) gtk_custom_hruler_init,
-                       /* reserved_1 */ NULL,
-                       /* reserved_2 */ NULL,
-                       (GtkClassInitFunc) NULL,
-               };
-               custom_hruler_type = gtk_type_unique (gtk_custom_ruler_get_type (), &custom_hruler_info);
+       static GType hruler_type = 0;
+
+       if (!hruler_type) {
+               static const GTypeInfo hruler_info =
+                       {
+                               sizeof (GtkCustomHRulerClass),
+                               NULL,           /* base_init */
+                               NULL,           /* base_finalize */
+                               (GClassInitFunc) gtk_custom_hruler_class_init,
+                               NULL,           /* class_finalize */
+                               NULL,           /* class_data */
+                               sizeof (GtkCustomHRuler),
+                               0,              /* n_preallocs */
+                               (GInstanceInitFunc) gtk_custom_hruler_init,
+                               NULL /* value_table */
+                       };
+
+               hruler_type = g_type_register_static (gtk_custom_ruler_get_type(), "GtkCustomHRuler",
+                                                     &hruler_info, 0);
        }
-       return custom_hruler_type;
+
+       return hruler_type;
 }
 
 static void
@@ -127,11 +133,15 @@ gtk_custom_hruler_draw_ticks (GtkCustomRuler * ruler)
 {
        GtkWidget *widget;
        GdkGC *gc, *bg_gc;
-       GdkFont *font;
        gint i;
        GtkCustomRulerMark *marks;
+       gint xthickness;
+       gint ythickness;
        gint nmarks;
        gint max_chars;
+       gint digit_offset;
+       PangoLayout *layout;
+       PangoRectangle logical_rect, ink_rect;
 
        g_return_if_fail (ruler != NULL);
        g_return_if_fail (GTK_IS_CUSTOM_HRULER (ruler));
@@ -143,22 +153,29 @@ gtk_custom_hruler_draw_ticks (GtkCustomRuler * ruler)
 
        gc = widget->style->fg_gc[GTK_STATE_NORMAL];
        bg_gc = widget->style->bg_gc[GTK_STATE_NORMAL];
-       font = gtk_style_get_font(widget->style);
+
+       layout = gtk_widget_create_pango_layout (widget, "012456789");
+       pango_layout_get_extents (layout, &ink_rect, &logical_rect);
+
+       digit_offset = ink_rect.y;
+
+       xthickness = widget->style->xthickness;
+       ythickness = widget->style->ythickness;
 
        gtk_paint_box (widget->style, ruler->backing_store,
                       GTK_STATE_NORMAL, GTK_SHADOW_NONE,
                       NULL, widget, "custom_hruler", 0, 0, widget->allocation.width, widget->allocation.height);
 
-       gdk_draw_line (ruler->backing_store, gc, 0, widget->allocation.height - 1, 
+       gdk_draw_line (ruler->backing_store, gc, 0, widget->allocation.height - 1,
                       widget->allocation.width, widget->allocation.height - 1);
 
        if ((ruler->upper - ruler->lower) == 0) {
                return;
        }
-       
+
        /* we have to assume a fixed width font here */
 
-       max_chars = widget->allocation.width / gdk_string_width (font, "8");
+       max_chars = widget->allocation.width / 12; // XXX FIX ME: pixel with of the char `8'
 
        nmarks = ruler->metric->get_marks (&marks, ruler->lower, ruler->upper, max_chars);
 
@@ -181,13 +198,27 @@ gtk_custom_hruler_draw_ticks (GtkCustomRuler * ruler)
                        break;
                }
 
-               gdk_draw_string (ruler->backing_store, font, gc, pos + 2, font->ascent - 1, marks[i].label);
+               pango_layout_set_text (layout, marks[i].label, -1);
+               pango_layout_get_extents (layout, &logical_rect, NULL);
+
+               gtk_paint_layout (widget->style,
+                                 ruler->backing_store,
+                                 GTK_WIDGET_STATE (widget),
+                                 FALSE,
+                                 NULL,
+                                 widget,
+                                 "hruler",
+                                 pos + 2, ythickness + PANGO_PIXELS (logical_rect.y - digit_offset),
+                                 layout);
+
                g_free (marks[i].label);
        }
-       
+
        if (nmarks) {
                g_free (marks);
        }
+
+       g_object_unref (layout);
 }
 
 static void
@@ -223,7 +254,7 @@ gtk_custom_hruler_draw_pos (GtkCustomRuler * ruler)
                                gdk_draw_pixmap (ruler->widget.window,
                                                 ruler->non_gr_exp_gc,
                                                 ruler->backing_store, ruler->xsrc, ruler->ysrc, ruler->xsrc, ruler->ysrc, bs_width, bs_height);
-                       
+
                        increment = (gfloat) width / (ruler->upper - ruler->lower);
                        x = ROUND ((ruler->position - ruler->lower) * increment) + (xthickness - bs_width) / 2 - 1;
                        y = (height + bs_height) / 2 + ythickness;