1 /* PSPP - a program for statistical analysis.
2 Copyright (C) 2012 Free Software Foundation, Inc.
4 This program is free software: you can redistribute it and/or modify
5 it under the terms of the GNU General Public License as published by
6 the Free Software Foundation, either version 3 of the License, or
7 (at your option) any later version.
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details.
14 You should have received a copy of the GNU General Public License
15 along with this program. If not, see <http://www.gnu.org/licenses/>. */
17 #ifndef OUTPUT_CHARTS_SL_PLOT_H
18 #define OUTPUT_CHARTS_SL_PLOT_H 1
20 #include "output/chart.h"
29 struct spreadlevel_plot_chart
33 /* Calculated parameters */
34 double y_lower, y_upper;
35 double x_lower, x_upper;
43 struct chart *spreadlevel_plot_create (const char *label, double slp);
45 void spreadlevel_plot_add (struct chart *, double spread, double level);
49 /* This boilerplate for spreadlevel_plot_chart, a subclass of chart, was
50 autogenerated by mk-class-boilerplate. */
53 #include "libpspp/cast.h"
55 extern const struct chart_class spreadlevel_plot_chart_class;
57 /* Returns true if SUPER is a spreadlevel_plot_chart, otherwise false. */
59 is_spreadlevel_plot_chart (const struct chart *super)
61 return super->class == &spreadlevel_plot_chart_class;
64 /* Returns SUPER converted to spreadlevel_plot_chart. SUPER must be a spreadlevel_plot_chart, as
65 reported by is_spreadlevel_plot_chart. */
66 static inline struct spreadlevel_plot_chart *
67 to_spreadlevel_plot_chart (const struct chart *super)
69 assert (is_spreadlevel_plot_chart (super));
70 return UP_CAST (super, struct spreadlevel_plot_chart, chart);
73 /* Returns INSTANCE converted to chart. */
74 static inline struct chart *
75 spreadlevel_plot_chart_super (const struct spreadlevel_plot_chart *instance)
77 return CONST_CAST (struct chart *, &instance->chart);
80 /* Increments INSTANCE's reference count and returns INSTANCE. */
81 static inline struct spreadlevel_plot_chart *
82 spreadlevel_plot_chart_ref (const struct spreadlevel_plot_chart *instance)
84 return to_spreadlevel_plot_chart (chart_ref (&instance->chart));
87 /* Decrements INSTANCE's reference count, then destroys INSTANCE if
88 the reference count is now zero. */
90 spreadlevel_plot_chart_unref (struct spreadlevel_plot_chart *instance)
92 chart_unref (&instance->chart);
95 /* Returns true if INSTANCE's reference count is greater than 1,
98 spreadlevel_plot_chart_is_shared (const struct spreadlevel_plot_chart *instance)
100 return chart_is_shared (&instance->chart);
104 spreadlevel_plot_chart_submit (struct spreadlevel_plot_chart *instance)
106 chart_submit (&instance->chart);