Add gtkprintutils.[hc]

2006-04-23  Matthias Clasen  <mclasen@redhat.com>

	* gtk/Makefile.am: Add gtkprintutils.[hc]

	* gtk/gtkprintutils.[hc]: New files, move the unit conversion
	functions here.

	* gtk/gtkpagesetupunixdialog.c:
	* gtk/gtkprintsettings.c:
	* gtk/gtkpagesetup.c:
	* gtk/gtkpapersize.c: Replace all static copies of to_mm/from_mm
	by the copies in gtkprintutils.c.

	* gtk/gtkpagesetup.[hc]: Use g types, add documentation.

1 files changed, 62 insertions, 0 deletions

diff --git a/gtk/gtkprintutils.c b/gtk/gtkprintutils.c
new file mode 100644
index 0000000000..dced6e8a4d
--- /dev/null
+++ b/gtk/gtkprintutils.c
@@ -0,0 +1,62 @@
+/* GTK - The GIMP Toolkit
+ * gtkpapersize.c: Paper Size
+ * Copyright (C) 2006, Red Hat, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ */
+
+#include "config.h"
+#include "gtkprintutils.h"
+
+gdouble
+_gtk_print_convert_to_mm (gdouble len, 
+			  GtkUnit unit)
+{
+  switch (unit)
+    {
+    case GTK_UNIT_MM:
+      return len;
+    case GTK_UNIT_INCH:
+      return len * MM_PER_INCH;
+    default:
+    case GTK_UNIT_PIXEL:
+      g_warning ("Unsupported unit");
+      /* Fall through */
+    case GTK_UNIT_POINTS:
+      return len * (MM_PER_INCH / POINTS_PER_INCH);
+      break;
+    }
+}
+
+gdouble
+_gtk_print_convert_from_mm (gdouble len, 
+			    GtkUnit unit)
+{
+  switch (unit)
+    {
+    case GTK_UNIT_MM:
+      return len;
+    case GTK_UNIT_INCH:
+      return len / MM_PER_INCH;
+    default:
+    case GTK_UNIT_PIXEL:
+      g_warning ("Unsupported unit");
+      /* Fall through */
+    case GTK_UNIT_POINTS:
+      return len / (MM_PER_INCH / POINTS_PER_INCH);
+      break;
+    }
+}