/* 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 <config.h>
#include <output/chart.h>
+#include <output/chart-provider.h>
#include <assert.h>
+#include <cairo/cairo.h>
#include <errno.h>
#include <float.h>
#include <math.h>
#include <stdlib.h>
#include <string.h>
-#include <plot.h>
-
#include <libpspp/str.h>
#include <output/manager.h>
#include <output/output.h>
extern struct som_table_class tab_table_class;
-struct chart *
-chart_create(void)
+void
+chart_init (struct chart *chart, const struct chart_class *class)
{
- 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);
+ chart->class = class;
+ chart->ref_cnt = 1;
+}
- return chart;
+void
+chart_geometry_init (cairo_t *cr, struct chart_geometry *geom,
+ double width, double length)
+{
+ /* Set default chartetry. */
+ geom->data_top = 0.900 * length;
+ geom->data_right = 0.800 * width;
+ geom->data_bottom = 0.120 * length;
+ geom->data_left = 0.150 * width;
+ geom->abscissa_top = 0.070 * length;
+ geom->ordinate_right = 0.120 * width;
+ geom->title_bottom = 0.920 * length;
+ geom->legend_left = 0.810 * width;
+ geom->legend_right = width;
+ geom->font_size = 15.0;
+ geom->in_path = false;
+ geom->dataset = NULL;
+ geom->n_datasets = 0;
+
+ geom->fill_colour.red = 255;
+ geom->fill_colour.green = 0;
+ geom->fill_colour.blue = 0;
+
+ cairo_set_line_width (cr, 1.0);
+
+ cairo_rectangle (cr, geom->data_left, geom->data_bottom,
+ geom->data_right - geom->data_left,
+ geom->data_top - geom->data_bottom);
+ cairo_stroke (cr);
}
void
-chart_submit(struct chart *chart)
+chart_geometry_free (cairo_t *cr UNUSED, struct chart_geometry *geom)
{
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 */
- {
- fprintf (stderr, "Couldn't close Plotter\n");
- }
-
- pl_deletepl_r(chart->lp);
+ for (i = 0 ; i < geom->n_datasets; ++i)
+ free (geom->dataset[i]);
+ free (geom->dataset);
+}
- pl_deleteplparams(chart->pl_params);
+void
+chart_draw (const struct chart *chart, cairo_t *cr,
+ struct chart_geometry *geom)
+{
+ chart->class->draw (chart, cr, geom);
+}
- d = outp_drivers (NULL);
- d->class->finalise_chart(d, chart);
+char *
+chart_draw_png (const struct chart *chart, const char *file_name_template,
+ int number)
+{
+ const int width = 640;
+ const int length = 480;
+
+ struct chart_geometry geom;
+ cairo_surface_t *surface;
+ cairo_status_t status;
+ const char *number_pos;
+ char *file_name;
+ cairo_t *cr;
+
+ number_pos = strchr (file_name_template, '#');
+ if (number_pos != NULL)
+ file_name = xasprintf ("%.*s%d%s", (int) (number_pos - file_name_template),
+ file_name_template, number, number_pos + 1);
+ else
+ file_name = xstrdup (file_name_template);
+
+ surface = cairo_image_surface_create (CAIRO_FORMAT_RGB24, width, length);
+ cr = cairo_create (surface);
+
+ cairo_translate (cr, 0.0, length);
+ cairo_scale (cr, 1.0, -1.0);
+
+ cairo_save (cr);
+ cairo_set_source_rgb (cr, 1.0, 1.0, 1.0);
+ cairo_rectangle (cr, 0, 0, width, length);
+ cairo_fill (cr);
+ cairo_restore (cr);
+
+ cairo_set_source_rgb (cr, 0.0, 0.0, 0.0);
+
+ chart_geometry_init (cr, &geom, width, length);
+ chart_draw (chart, cr, &geom);
+ chart_geometry_free (cr, &geom);
+
+ status = cairo_surface_write_to_png (surface, file_name);
+ if (status != CAIRO_STATUS_SUCCESS)
+ error (0, 0, _("writing output file \"%s\": %s"),
+ file_name, cairo_status_to_string (status));
+
+ cairo_destroy (cr);
+ cairo_surface_destroy (surface);
+
+ return file_name;
+}
- for (i = 0 ; i < chart->n_datasets; ++i)
- free (chart->dataset[i]);
- free (chart->dataset);
- free(chart);
+struct chart *
+chart_ref (const struct chart *chart_)
+{
+ struct chart *chart = CONST_CAST (struct chart *, chart_);
+ chart->ref_cnt++;
+ return chart;
}
void
-chart_init_separate (struct chart *ch, const char *type,
- const char *file_name_tmpl, int number)
+chart_unref (struct chart *chart)
{
- 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)
+ if (chart != NULL)
{
- error (0, errno, _("creating \"%s\""), ch->file_name);
- free (ch->file_name);
- ch->file_name = NULL;
- return;
+ assert (chart->ref_cnt > 0);
+ if (--chart->ref_cnt == 0)
+ chart->class->destroy (chart);
}
-
- ch->pl_params = pl_newplparams ();
- ch->lp = pl_newpl_r (type, 0, fp, stderr, ch->pl_params);
}
void
-chart_finalise_separate (struct chart *ch)
+chart_submit (struct chart *chart)
{
- free (ch->file_name);
+#ifdef HAVE_CAIRO
+ struct outp_driver *d;
+
+ for (d = outp_drivers (NULL); d; d = outp_drivers (d))
+ if (d->class->output_chart != NULL)
+ d->class->output_chart (d, chart);
+#endif
+
+ chart_unref (chart);
}
projects / pspp-builds.git / blobdiff