tools/Makefile.am added a very basic GimpUnit implementation.

2005-04-28  Sven Neumann  <sven@gimp.org>

	* tools/Makefile.am
	* tools/units.[ch]: added a very basic GimpUnit implementation.

	* tools/shooter.c
	* tools/widgets.c: initialize the units and enable GimpUnitMenu.

devel-docs/tools/units.c

@@ -0,0 +1,102 @@
+
+#include "config.h"
+
+#include <glib-object.h>
+
+#include "libgimpbase/gimpbase.h"
+#include "libgimpbase/gimpbase-private.h"
+
+#include "units.h"
+
+
+typedef struct
+{
+  gdouble      factor;
+  gint         digits;
+  const gchar *identifier;
+  const gchar *symbol;
+  const gchar *abbreviation;
+  const gchar *singular;
+  const gchar *plural;
+} GimpUnitDef;
+
+static const GimpUnitDef unit_defs[] =
+{
+  {  0.0, 0, "pixels",      "px", "px", "pixel",      "pixels"      },
+  {  1.0, 2, "inches",      "''", "in", "inch",       "inches"      },
+  { 25.4, 1, "millimeters", "mm", "mm", "millimeter", "millimeters" }
+};
+
+
+static gint
+units_get_number_of_units (void)
+{
+  return G_N_ELEMENTS (unit_defs);
+}
+
+static gint
+units_get_number_of_built_in_units (void)
+{
+  return G_N_ELEMENTS (unit_defs);
+}
+
+static gdouble
+units_unit_get_factor (GimpUnit unit)
+{
+  return unit_defs[unit].factor;
+}
+
+static gint
+units_unit_get_digits (GimpUnit unit)
+{
+  return unit_defs[unit].digits;
+}
+
+static const gchar *
+units_unit_get_identifier (GimpUnit unit)
+{
+  return unit_defs[unit].identifier;
+}
+
+static const gchar *
+units_unit_get_symbol (GimpUnit unit)
+{
+  return unit_defs[unit].symbol;
+}
+
+static const gchar *
+units_unit_get_abbreviation (GimpUnit unit)
+{
+  return unit_defs[unit].abbreviation;
+}
+
+static const gchar *
+units_unit_get_singular (GimpUnit unit)
+{
+  return unit_defs[unit].singular;
+}
+
+static const gchar *
+units_unit_get_plural (GimpUnit unit)
+{
+  return unit_defs[unit].plural;
+}
+
+void
+units_init (void)
+{
+  GimpUnitVTable vtable;
+
+  vtable.unit_get_number_of_units          = units_get_number_of_units;
+  vtable.unit_get_number_of_built_in_units = units_get_number_of_built_in_units;
+  vtable.unit_new                          = NULL;
+  vtable.unit_get_factor                   = units_unit_get_factor;
+  vtable.unit_get_digits                   = units_unit_get_digits;
+  vtable.unit_get_identifier               = units_unit_get_identifier;
+  vtable.unit_get_symbol                   = units_unit_get_symbol;
+  vtable.unit_get_abbreviation             = units_unit_get_abbreviation;
+  vtable.unit_get_singular                 = units_unit_get_singular;
+  vtable.unit_get_plural                   = units_unit_get_plural;
+
+  gimp_base_init (&vtable);
+}