1 /* PSPP - a program for statistical analysis.
2 Copyright (C) 2004, 2009 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/>. */
20 #include <cairo/cairo.h>
30 #include <math/chart-geometry.h>
31 #include <output/chart.h>
32 #include <output/chart-provider.h>
34 #include <libpspp/compiler.h>
35 #include <libpspp/str.h>
36 #include <output/manager.h>
37 #include <output/output.h>
39 #define N_CHART_COLOURS 9
40 extern const struct chart_colour data_colour[];
48 struct chart_geometry;
53 MARKER_CIRCLE, /* Hollow circle. */
54 MARKER_ASTERISK, /* Asterisk (*). */
55 MARKER_SQUARE /* Hollow square. */
58 void chart_draw_marker (cairo_t *, double x, double y, enum marker_type,
61 void chart_label (cairo_t *, int horz_justify, int vert_justify,
62 double font_size, const char *);
64 /* Draw a tick mark at position
65 If label is non zero, then print it at the tick mark
67 void draw_tick(cairo_t *, const struct chart_geometry *,
68 enum tick_orientation orientation,
70 const char *label, ...)
74 /* Write the title on a chart*/
75 void chart_write_title(cairo_t *, const struct chart_geometry *,
76 const char *title, ...)
80 /* Set the scale for the abscissa */
81 void chart_write_xscale(cairo_t *, struct chart_geometry *,
82 double min, double max, int ticks);
85 /* Set the scale for the ordinate */
86 void chart_write_yscale(cairo_t *, struct chart_geometry *,
87 double smin, double smax, int ticks);
89 void chart_write_xlabel(cairo_t *, const struct chart_geometry *,
92 /* Write the ordinate label */
93 void chart_write_ylabel(cairo_t *, const struct chart_geometry *,