/* PSPP - a program for statistical analysis.
- Copyright (C) 2004 Free Software Foundation, Inc.
+ Copyright (C) 2004, 2009, 2011 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 <config.h>
-#include <output/chart.h>
-
#include <assert.h>
-#include <errno.h>
-#include <float.h>
-#include <math.h>
-#include <stdarg.h>
-#include <stdio.h>
#include <stdlib.h>
-#include <string.h>
-
-#include <plot.h>
-#include <libpspp/str.h>
-#include <output/manager.h>
-#include <output/output.h>
+#include "libpspp/cast.h"
+#include "libpspp/compiler.h"
+#include "libpspp/str.h"
+#include "output/chart-provider.h"
+#include "output/output-item.h"
-#include "error.h"
-#include "xalloc.h"
+#include "gl/xalloc.h"
#include "gettext.h"
#define _(msgid) gettext (msgid)
-extern struct som_table_class tab_table_class;
-
struct chart *
-chart_create(void)
+chart_ref (const struct chart *chart_)
{
- struct chart *chart;
- struct outp_driver *d;
-
- d = outp_drivers (NULL);
- if (d == NULL)
- return NULL;
-
- chart = xmalloc (sizeof *chart);
- chart->lp = NULL;
- d->class->initialise_chart(d, chart);
- if (!chart->lp)
- {
- free (chart);
- return NULL;
- }
-
- if (pl_openpl_r (chart->lp) < 0) /* open Plotter */
- return NULL;
-
- pl_fspace_r (chart->lp, 0.0, 0.0, 1000.0, 1000.0); /* set coordinate system */
- pl_flinewidth_r (chart->lp, 0.25); /* set line thickness */
- pl_pencolorname_r (chart->lp, "black");
-
- pl_erase_r (chart->lp); /* erase graphics display */
- pl_filltype_r(chart->lp,0);
-
- pl_savestate_r(chart->lp);
-
- /* Set default chartetry */
- chart->data_top = 900;
- chart->data_right = 800;
- chart->data_bottom = 120;
- chart->data_left = 150;
- chart->abscissa_top = 70;
- chart->ordinate_right = 120;
- chart->title_bottom = 920;
- chart->legend_left = 810;
- chart->legend_right = 1000;
- chart->font_size = 0;
- chart->in_path = false;
- chart->dataset = NULL;
- chart->n_datasets = 0;
- strcpy(chart->fill_colour,"red");
-
- /* Get default font size */
- if ( !chart->font_size)
- chart->font_size = pl_fontsize_r(chart->lp, -1);
-
- /* Draw the data area */
- pl_box_r(chart->lp,
- chart->data_left, chart->data_bottom,
- chart->data_right, chart->data_top);
-
+ struct chart *chart = CONST_CAST (struct chart *, chart_);
+ assert (chart->ref_cnt > 0);
+ chart->ref_cnt++;
return chart;
}
void
-chart_submit(struct chart *chart)
+chart_unref (struct chart *chart)
{
- int i;
- struct som_entity s;
- struct outp_driver *d;
-
- if ( ! chart )
- return ;
-
- pl_restorestate_r(chart->lp);
-
- s.class = &tab_table_class;
- s.ext = chart;
- s.type = SOM_CHART;
- som_submit (&s);
-
- if (pl_closepl_r (chart->lp) < 0) /* close Plotter */
+ if (chart)
{
- fprintf (stderr, "Couldn't close Plotter\n");
+ assert (chart->ref_cnt > 0);
+ if (!--chart->ref_cnt)
+ {
+ char *title = chart->title;
+ chart->class->destroy (chart);
+ free (title);
+ }
}
+}
- pl_deletepl_r(chart->lp);
-
- pl_deleteplparams(chart->pl_params);
+bool
+chart_is_shared (const struct chart *chart)
+{
+ assert (chart->ref_cnt > 0);
+ return chart->ref_cnt > 1;
+}
- d = outp_drivers (NULL);
- d->class->finalise_chart(d, chart);
+/* Initializes CHART as a chart of the specified CLASS. The new chart
+ initially has the specified TITLE, which may be NULL if no title is yet
+ available. The caller retains ownership of TITLE.
- for (i = 0 ; i < chart->n_datasets; ++i)
- free (chart->dataset[i]);
- free (chart->dataset);
+ A chart is abstract, that is, a plain chart is not useful on its own. Thus,
+ this function is normally called from the initialization function of some
+ subclass of chart. */
+void
+chart_init (struct chart *chart, const struct chart_class *class,
+ const char *title)
+{
+ *chart = (struct chart) {
+ .ref_cnt = 1,
+ .class = class,
+ .title = xstrdup_if_nonnull (title),
+ };
+}
- free(chart);
+/* Returns CHART's title, which is a null pointer if no title has been set. */
+const char *
+chart_get_title (const struct chart *chart)
+{
+ return chart->title;
}
+/* Sets CHART's title to TITLE, replacing any previous title. Specify NULL for
+ TITLE to clear any title from CHART. The caller retains ownership of
+ TITLE.
+
+ This function may only be used on a chart that is unshared. */
void
-chart_init_separate (struct chart *ch, const char *type,
- const char *file_name_tmpl, int number)
+chart_set_title (struct chart *chart, const char *title)
{
- FILE *fp;
- int number_pos;
-
- number_pos = strchr (file_name_tmpl, '#') - file_name_tmpl;
- ch->file_name = xasprintf ("%.*s%d%s",
- number_pos, file_name_tmpl,
- number,
- file_name_tmpl + number_pos + 1);
- fp = fopen (ch->file_name, "wb");
- if (fp == NULL)
- {
- error (0, errno, _("creating \"%s\""), ch->file_name);
- free (ch->file_name);
- ch->file_name = NULL;
- return;
- }
-
- ch->pl_params = pl_newplparams ();
- ch->lp = pl_newpl_r (type, 0, fp, stderr, ch->pl_params);
+ assert (!chart_is_shared (chart));
+ free (chart->title);
+ chart->title = xstrdup_if_nonnull (title);
}
+/* Submits CHART to the configured output drivers, and transfers ownership to
+ the output subsystem. */
void
-chart_finalise_separate (struct chart *ch)
+chart_submit (struct chart *chart)
{
- free (ch->file_name);
+ if (chart)
+ output_item_submit (chart_item_create (chart));
}
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