Rewrite PSPP output engine.

[pspp-builds.git] / src / output / charts / piechart.h

diff --git a/src/output/charts/piechart.h b/src/output/charts/piechart.h
index 39a0c2d5d28e7c05766b93e62a4f0d91b6f4e292..312a45ee08ce759f84e9c02e2991ca9acd3163f0 100644 (file)
--- a/src/output/charts/piechart.h
+++ b/src/output/charts/piechart.h
@@ -18,14 +18,82 @@
 #define PIECHART_H
 
 #include <libpspp/str.h>
+#include <output/chart-item.h>
 
-struct slice {
-  struct string label;
-  double magnitude;
-};
+struct piechart
+  {
+    struct chart_item chart_item;
+    struct slice *slices;
+    int n_slices;
+  };
 
-struct chart *piechart_create (const char *title,
-                               const struct slice *, int n_slices);
+struct slice
+  {
+    struct string label;
+    double magnitude;
+  };
 
-#endif
+struct chart_item *piechart_create (const char *title,
+                                    const struct slice *, int n_slices);
+\f
+/* This boilerplate for piechart, a subclass of chart_item, was
+   autogenerated by mk-class-boilerplate. */
 
+#include <assert.h>
+#include <libpspp/cast.h>
+
+extern const struct chart_item_class piechart_class;
+
+/* Returns true if SUPER is a piechart, otherwise false. */
+static inline bool
+is_piechart (const struct chart_item *super)
+{
+  return super->class == &piechart_class;
+}
+
+/* Returns SUPER converted to piechart.  SUPER must be a piechart, as
+   reported by is_piechart. */
+static inline struct piechart *
+to_piechart (const struct chart_item *super)
+{
+  assert (is_piechart (super));
+  return UP_CAST (super, struct piechart, chart_item);
+}
+
+/* Returns INSTANCE converted to chart_item. */
+static inline struct chart_item *
+piechart_super (const struct piechart *instance)
+{
+  return CONST_CAST (struct chart_item *, &instance->chart_item);
+}
+
+/* Increments INSTANCE's reference count and returns INSTANCE. */
+static inline struct piechart *
+piechart_ref (const struct piechart *instance)
+{
+  return to_piechart (chart_item_ref (&instance->chart_item));
+}
+
+/* Decrements INSTANCE's reference count, then destroys INSTANCE if
+   the reference count is now zero. */
+static inline void
+piechart_unref (struct piechart *instance)
+{
+  chart_item_unref (&instance->chart_item);
+}
+
+/* Returns true if INSTANCE's reference count is greater than 1,
+   false otherwise. */
+static inline bool
+piechart_is_shared (const struct piechart *instance)
+{
+  return chart_item_is_shared (&instance->chart_item);
+}
+
+static inline void
+piechart_submit (struct piechart *instance)
+{
+  chart_item_submit (&instance->chart_item);
+}
+\f
+#endif /* output/charts/piechart.h */