/* PSPP - a program for statistical analysis.
- Copyright (C) 2004 Free Software Foundation, Inc.
+ Copyright (C) 2004, 2009 Free Software Foundation, Inc.
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
#include "xalloc.h"
-const char *const data_colour[] = {
- "brown",
- "red",
- "orange",
- "yellow",
- "green",
- "blue",
- "violet",
- "grey",
- "pink"
-};
+const char *const data_colour[N_CHART_COLOURS] =
+ {
+ "brown",
+ "red",
+ "orange",
+ "yellow",
+ "green",
+ "blue",
+ "violet",
+ "grey",
+ "pink"
+ };
pl_restorestate_r(ch->lp);
}
+
+
+void
+chart_write_legend (struct chart *ch)
+{
+ int i;
+ const int vstep = ch->font_size * 2;
+ const int xpad = 10;
+ const int ypad = 10;
+ const int swatch = 20;
+ const int legend_top = ch->data_top;
+ const int legend_bottom = legend_top -
+ (vstep * ch->n_datasets + 2 * ypad );
+
+ if ( ! ch )
+ return ;
+
+ pl_savestate_r (ch->lp);
+
+ pl_box_r (ch->lp, ch->legend_left, legend_top,
+ ch->legend_right - xpad, legend_bottom);
+
+ for (i = 0 ; i < ch->n_datasets ; ++i )
+ {
+ const int ypos = vstep * (i + 1);
+ const int xpos = ch->legend_left + xpad;
+ pl_move_r (ch->lp, xpos, legend_top - ypos);
+
+ pl_savestate_r(ch->lp);
+ pl_fillcolorname_r (ch->lp, data_colour [ i % N_CHART_COLOURS]);
+
+ pl_pentype_r (ch->lp, 1);
+ pl_filltype_r (ch->lp, 1);
+ pl_boxrel_r (ch->lp, 0, 0, swatch, swatch);
+
+
+ pl_moverel_r (ch->lp, swatch, 0);
+ pl_alabel_r (ch->lp, 0, 0, ch->dataset[i]);
+
+ pl_restorestate_r (ch->lp);
+ }
+
+ pl_restorestate_r (ch->lp);
+}