Use gtk+ builtin paper list to identify the document's paper size. Fixes

2007-05-08  Carlos Garcia Campos  <carlosgc@gnome.org>
	* configure.ac:
	* properties/ev-properties-view.c: (ev_regular_paper_size):
	Use gtk+ builtin paper list to identify the document's paper size.
	Fixes bug #382438. 

svn path=/trunk/; revision=2438

3 files changed, 118 insertions, 0 deletions

diff --git a/ChangeLog b/ChangeLog
index fc08568..9171b20 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,11 @@
+2007-05-08  Carlos Garcia Campos  <carlosgc@gnome.org>
+
+	* configure.ac:
+	* properties/ev-properties-view.c: (ev_regular_paper_size):
+
+	Use gtk+ builtin paper list to identify the document's paper size.
+	Fixes bug #382438. 
+
 2007-05-04  Carlos Garcia Campos  <carlosgc@gnome.org>
 
 	* configure.ac:
diff --git a/configure.ac b/configure.ac
index f6b37be..3af9939 100644
--- a/configure.ac
+++ b/configure.ac
@@ -443,6 +443,11 @@ if test "x$enable_impress" = "xyes"; then
 fi
 AC_SUBST(EVINCE_MIME_TYPES)
 
+evince_save_LIBS=$LIBS
+LIBS="$LIBS $FRONTEND_LIBS"
+AC_CHECK_FUNCS(gtk_paper_size_get_paper_sizes)
+LIBS=$evince_save_LIBS
+
 AC_CONFIG_FILES([
 backend/Makefile
 backend/comics/Makefile
diff --git a/properties/ev-properties-view.c b/properties/ev-properties-view.c
index 2c2d8f0..0df238a 100644
--- a/properties/ev-properties-view.c
+++ b/properties/ev-properties-view.c
@@ -193,6 +193,110 @@ set_property (GladeXML *xml, Property property, const char *text)
 	g_free (valid_text);
 }
 
+#if HAVE_GTK_PAPER_SIZE_GET_PAPER_SIZES
+static GtkUnit
+get_default_user_units (void)
+{
+	/* Translate to the default units to use for presenting
+	 * lengths to the user. Translate to default:inch if you
+	 * want inches, otherwise translate to default:mm.
+	 * Do *not* translate it to "predefinito:mm", if it
+	 * it isn't default:mm or default:inch it will not work
+	 */
+	gchar *e = _("default:mm");
+
+#ifdef HAVE__NL_MEASUREMENT_MEASUREMENT
+	gchar *imperial = NULL;
+	
+	imperial = nl_langinfo (_NL_MEASUREMENT_MEASUREMENT);
+	if (imperial && imperial[0] == 2)
+		return GTK_UNIT_INCH;  /* imperial */
+	if (imperial && imperial[0] == 1)
+		return GTK_UNIT_MM;  /* metric */
+#endif
+
+	if (strcmp (e, "default:inch") == 0)
+		return GTK_UNIT_INCH;
+	else if (strcmp (e, "default:mm") == 0)
+		g_warning ("Whoever translated default:mm did so wrongly.\n");
+				
+	return GTK_UNIT_MM;
+}
+
+static gdouble
+get_tolerance (gdouble size)
+{
+	if (size < 150.0f)
+		return 1.5f;
+	else if (size >= 150.0f && size <= 600.0f)
+		return 2.0f;
+	else
+		return 3.0f;
+}
+
+static char *
+ev_regular_paper_size (const EvDocumentInfo *info)
+{
+	GList *paper_sizes, *l;
+	gchar *exact_size;
+	gchar *str = NULL;
+	GtkUnit units;
+
+	units = get_default_user_units ();
+
+	if (units == GTK_UNIT_MM) {
+		exact_size = g_strdup_printf(_("%.0f x %.0f mm"),
+					     info->paper_width,
+					     info->paper_height);
+	} else {
+		exact_size = g_strdup_printf (_("%.2f x %.2f inch"),
+					      info->paper_width  / 25.4f,
+					      info->paper_height / 25.4f);
+	}
+
+	paper_sizes = gtk_paper_size_get_paper_sizes (FALSE);
+	
+	for (l = paper_sizes; l && l->data; l = g_list_next (l)) {
+		GtkPaperSize *size = (GtkPaperSize *) l->data;
+		gdouble paper_width;
+		gdouble paper_height;
+		gdouble width_tolerance;
+		gdouble height_tolerance;
+
+		paper_width = gtk_paper_size_get_width (size, GTK_UNIT_MM);
+		paper_height = gtk_paper_size_get_height (size, GTK_UNIT_MM);
+
+		width_tolerance = get_tolerance (paper_width);
+		height_tolerance = get_tolerance (paper_height);
+
+		if (ABS (info->paper_height - paper_height) <= height_tolerance &&
+		    ABS (info->paper_width  - paper_width) <= width_tolerance) {
+			/* Note to translators: first placeholder is the paper name (eg.
+			 * A4), second placeholder is the paper size (eg. 297x210 mm) */
+			str = g_strdup_printf (_("%s, Portrait (%s)"),
+					       gtk_paper_size_get_display_name (size),
+					       exact_size);
+		} else if (ABS (info->paper_width  - paper_height) <= height_tolerance &&
+			   ABS (info->paper_height - paper_width) <= width_tolerance) {
+			/* Note to translators: first placeholder is the paper name (eg.
+			 * A4), second placeholder is the paper size (eg. 297x210 mm) */
+			str = g_strdup_printf ( _("%s, Landscape (%s)"),
+						gtk_paper_size_get_display_name (size),
+						exact_size);
+		}
+	}
+
+	g_list_foreach (paper_sizes, (GFunc) gtk_paper_size_free, NULL);
+	g_list_free (paper_sizes);
+
+	if (str != NULL) {
+		g_free (exact_size);
+		return str;
+	}
+	
+	return exact_size;
+}
+#else
 /*
  * All values are in mm. 
  * Source: http://en.wikipedia.org/wiki/Paper_size
@@ -326,6 +430,7 @@ ev_regular_paper_size (const EvDocumentInfo *info)
 	} else
 		return exact_size;
 }
+#endif /* HAVE_GTK_PAPER_SIZE_GET_PAPER_SIZES */
 
 void
 ev_properties_view_set_info (EvPropertiesView *properties, const EvDocumentInfo *info)