-/* PSPP - computes sample statistics.
- Copyright (C) 2004 Free Software Foundation, Inc.
- Written by John Darrington <john@darrington.wattle.id.au>
+/* PSPP - a program for statistical analysis.
+ 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 the Free Software Foundation; either version 2 of the
- License, or (at your option) any later version.
+ 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
+ the Free Software Foundation, either version 3 of the License, or
+ (at your option) any later version.
- This program is distributed in the hope that it will be useful, but
- WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- General Public License for more details.
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software
- Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
- 02110-1301, USA. */
+ along with this program. If not, see <http://www.gnu.org/licenses/>. */
#include <config.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <plot.h>
-#include <stdarg.h>
-#include <string.h>
-#include <float.h>
+
#include <assert.h>
-#include <math.h>
+#include <stdlib.h>
+
+#include "libpspp/cast.h"
+#include "libpspp/compiler.h"
+#include "libpspp/str.h"
+#include "output/chart-provider.h"
+#include "output/output-item.h"
-#include "chart.h"
-#include "str.h"
-#include "alloc.h"
-#include "manager.h"
-#include "output.h"
+#include "gl/xalloc.h"
-extern struct som_table_class tab_table_class;
+#include "gettext.h"
+#define _(msgid) gettext (msgid)
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);
- 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;
- 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)
{
- struct som_entity s;
- struct outp_driver *d;
+ if (chart)
+ {
+ assert (chart->ref_cnt > 0);
+ if (!--chart->ref_cnt)
+ {
+ char *title = chart->title;
+ chart->class->destroy (chart);
+ free (title);
+ }
+ }
+}
- if ( ! chart )
- return ;
+bool
+chart_is_shared (const struct chart *chart)
+{
+ assert (chart->ref_cnt > 0);
+ return chart->ref_cnt > 1;
+}
- pl_restorestate_r(chart->lp);
+/* 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.
- s.class = &tab_table_class;
- s.ext = chart;
- s.type = SOM_CHART;
- som_submit (&s);
-
- if (pl_closepl_r (chart->lp) < 0) /* close Plotter */
- {
- fprintf (stderr, "Couldn't close Plotter\n");
- }
+ 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),
+ };
+}
- pl_deletepl_r(chart->lp);
+/* 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;
+}
- pl_deleteplparams(chart->pl_params);
+/* 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.
- d = outp_drivers (NULL);
- d->class->finalise_chart(d, chart);
- free(chart);
+ This function may only be used on a chart that is unshared. */
+void
+chart_set_title (struct chart *chart, const char *title)
+{
+ 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_submit (struct chart *chart)
+{
+ if (chart)
+ output_item_submit (chart_item_create (chart));
+}
projects / pspp / blobdiff