#include <output/chart-provider.h>
#include <assert.h>
+#include <cairo/cairo.h>
#include <errno.h>
#include <float.h>
#include <math.h>
-#include <plot.h>
#include <stdarg.h>
#include <stdio.h>
#include <stdlib.h>
}
void
-chart_geometry_init (plPlotter *lp, struct chart_geometry *geom)
+chart_geometry_init (cairo_t *cr, struct chart_geometry *geom,
+ double width, double length)
{
- /* Start output page. */
- pl_openpl_r (lp);
-
- /* Set coordinate system. */
- pl_fspace_r (lp, 0.0, 0.0, 1000.0, 1000.0);
-
- /* Set line thickness. */
- pl_flinewidth_r (lp, 0.25);
- pl_pencolorname_r (lp, "black");
-
- /* Erase graphics display. */
- pl_erase_r (lp);
-
- pl_filltype_r (lp, 0);
- pl_savestate_r(lp);
-
/* Set default chartetry. */
- geom->data_top = 900;
- geom->data_right = 800;
- geom->data_bottom = 120;
- geom->data_left = 150;
- geom->abscissa_top = 70;
- geom->ordinate_right = 120;
- geom->title_bottom = 920;
- geom->legend_left = 810;
- geom->legend_right = 1000;
- geom->font_size = 0;
- strcpy (geom->fill_colour, "red");
-
- /* Get default font size */
- if (!geom->font_size)
- geom->font_size = pl_fontsize_r (lp, -1);
-
- /* Draw the data area */
- pl_box_r (lp,
- geom->data_left, geom->data_bottom,
- geom->data_right, geom->data_top);
+ 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->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_geometry_free (plPlotter *lp)
+chart_geometry_free (cairo_t *cr UNUSED)
{
- if (pl_closepl_r (lp) < 0)
- fprintf (stderr, "Couldn't close Plotter\n");
}
void
-chart_draw (const struct chart *chart, plPlotter *lp)
+chart_draw (const struct chart *chart, cairo_t *cr,
+ struct chart_geometry *geom)
{
- chart->class->draw (chart, lp);
+ chart->class->draw (chart, cr, geom);
+}
+
+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);
+
+ 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;
}
+
struct chart *
chart_ref (const struct chart *chart_)
{
void
chart_unref (struct chart *chart)
{
- assert (chart->ref_cnt > 0);
- if (--chart->ref_cnt == 0)
- chart->class->destroy (chart);
+ if (chart != NULL)
+ {
+ assert (chart->ref_cnt > 0);
+ if (--chart->ref_cnt == 0)
+ chart->class->destroy (chart);
+ }
}
void
chart_submit (struct chart *chart)
{
+#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);
}
-
-bool
-chart_create_file (const char *type, const char *file_name_tmpl, int number,
- plPlotterParams *params, char **file_namep, plPlotter **lpp)
-{
- char *file_name = NULL;
- FILE *fp = NULL;
- int number_pos;
- plPlotter *lp;
-
- number_pos = strchr (file_name_tmpl, '#') - file_name_tmpl;
- file_name = xasprintf ("%.*s%d%s", number_pos, file_name_tmpl,
- number, file_name_tmpl + number_pos + 1);
-
- fp = fopen (file_name, "wb");
- if (fp == NULL)
- {
- error (0, errno, _("creating \"%s\""), file_name);
- goto error;
- }
-
- if (params != NULL)
- lp = pl_newpl_r (type, 0, fp, stderr, params);
- else
- {
- params = pl_newplparams ();
- lp = pl_newpl_r (type, 0, fp, stderr, params);
- pl_deleteplparams (params);
- }
- if (lp == NULL)
- goto error;
-
- *file_namep = file_name;
- *lpp = lp;
- return true;
-
-error:
- if (fp != NULL)
- {
- fclose (fp);
- if (file_name != NULL)
- unlink (file_name);
- }
- free (file_name);
- *file_namep = NULL;
- *lpp = NULL;
- return false;
-}