/* PSPP - a program for statistical analysis.
- Copyright (C) 2004, 2009, 2010, 2011, 2014, 2015 Free Software Foundation, Inc.
+ Copyright (C) 2004, 2009, 2010, 2011, 2014, 2015,
+ 2020 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/cairo-chart.h"
-#include "math/decimal.h"
#include "math/chart-geometry.h"
-#include <assert.h>
+#include <cairo/cairo-ps.h>
#include <cairo/cairo.h>
#include <pango/pango.h>
#include <pango/pangocairo.h>
#include <string.h>
#include "libpspp/assertion.h"
+#include "libpspp/message.h"
#include "math/chart-geometry.h"
-#include "output/cairo.h"
#include "output/chart-item.h"
+#include "output/charts/barchart.h"
+#include "output/charts/boxplot.h"
+#include "output/charts/np-plot.h"
+#include "output/charts/piechart.h"
+#include "output/charts/plot-hist.h"
+#include "output/charts/roc-chart.h"
+#include "output/charts/scatterplot.h"
+#include "output/charts/scree.h"
+#include "output/charts/spreadlevel-plot.h"
+#include "output/table.h"
#include "gl/xalloc.h"
#include "gl/xvasprintf.h"
{
/* Set default chart geometry. */
geom->axis[SCALE_ORDINATE].data_max = 0.900 * length;
- geom->axis[SCALE_ORDINATE].data_min = 0.120 * length;
+ geom->axis[SCALE_ORDINATE].data_min = 0.200 * length;
geom->axis[SCALE_ABSCISSA].data_min = 0.150 * width;
geom->axis[SCALE_ABSCISSA].data_max = 0.800 * width;
}
#endif
-/*
- These colours come from:
+/*
+ These colours come from:
http://tango.freedesktop.org/static/cvs/tango-art-tools/palettes/Tango-Palette.gpl */
const struct xrchart_colour data_colour[XRCHART_N_COLOURS] =
{
layout = pango_cairo_create_layout (cr);
pango_layout_set_font_description (layout, desc);
- pango_layout_set_text (layout, string, -1);
+ pango_layout_set_markup (layout, string, -1);
if (horz_justify != 'l')
{
int width_pango;
if (orientation == SCALE_ABSCISSA)
{
- if ( rotated)
+ if (rotated)
xrchart_label_rotate (cr, 'l', 'c', geom->font_size, s, -G_PI_4);
else
xrchart_label (cr, 'c', 't', geom->font_size, s);
}
else if (orientation == SCALE_ORDINATE)
{
- if (fabs (position) < DBL_EPSILON)
- cairo_rel_move_to (cr, 0, 10);
xrchart_label (cr, 'r', 'c', geom->font_size, s);
}
}
cairo_restore (cr);
}
+static void
+xrchart_text_extents (cairo_t *cr, const struct xrchart_geometry *geom,
+ const char *utf8,
+ double *width, double *height)
+{
+ PangoFontDescription *desc;
+ PangoLayout *layout;
+ int width_pango;
+ int height_pango;
+ desc = pango_font_description_from_string ("Sans");
+ if (desc == NULL)
+ return;
+ pango_font_description_set_absolute_size (desc, geom->font_size * PANGO_SCALE);
+ layout = pango_cairo_create_layout (cr);
+ pango_layout_set_font_description (layout, desc);
+ pango_layout_set_markup (layout, utf8, -1);
+ pango_layout_get_size (layout, &width_pango, &height_pango);
+ *width = (double) width_pango / PANGO_SCALE;
+ *height = (double) height_pango / PANGO_SCALE;
+ g_object_unref (layout);
+ pango_font_description_free (desc);
+}
-static void
+static bool
xrchart_write_scale (cairo_t *cr, struct xrchart_geometry *geom,
double smin, double smax, enum tick_orientation orient)
{
int s;
int ticks;
- struct decimal dinterval;
- struct decimal dlower;
- struct decimal dupper;
+ double interval;
+ double lower;
+ double upper;
+ double tickscale;
+ char *tick_format_string;
+ bool tickoversize = false;
- chart_get_scale (smax, smin, &dlower, &dinterval, &ticks);
+ if (smax == smin)
+ return false;
- dupper = dinterval;
- decimal_int_multiply (&dupper, ticks);
- decimal_add (&dupper, &dlower);
+ chart_get_scale (smax, smin, &lower, &interval, &ticks);
- double tick_interval = decimal_to_double (&dinterval);
-
- geom->axis[orient].max = decimal_to_double (&dupper);
- geom->axis[orient].min = decimal_to_double (&dlower);
-
- geom->axis[orient].scale = (fabs (geom->axis[orient].data_max - geom->axis[orient].data_min)
- / fabs (geom->axis[orient].max - geom->axis[orient].min));
-
- struct decimal pos = dlower;
+ tick_format_string = chart_get_ticks_format (lower, interval, ticks, &tickscale);
- for (s = 0 ; s < ticks; ++s)
+ upper = lower + interval * (ticks+1);
+
+ geom->axis[orient].max = upper;
+ geom->axis[orient].min = lower;
+
+ struct xrchart_axis *axis = &geom->axis[orient];
+ geom->axis[orient].scale = (fabs ((double) axis->data_max - axis->data_min)
+ / fabs (axis->max - axis->min));
+
+ if (orient == SCALE_ABSCISSA)
{
- char *str = decimal_to_string (&pos);
- draw_tick (cr, geom, orient, false,
- s * tick_interval * geom->axis[orient].scale,
- "%s", str);
- free (str);
-
- decimal_add (&pos, &dinterval);
+ char *test_text;
+ double lower_txt_width, upper_txt_width, unused, width;
+ test_text = xasprintf(tick_format_string, upper*tickscale);
+ xrchart_text_extents (cr, geom, test_text, &upper_txt_width, &unused);
+ free(test_text);
+ test_text = xasprintf(tick_format_string, lower*tickscale);
+ xrchart_text_extents (cr, geom, test_text, &lower_txt_width, &unused);
+ free(test_text);
+ width = MAX(lower_txt_width, upper_txt_width);
+ tickoversize = width > 0.9 *
+ ((double)(geom->axis[SCALE_ABSCISSA].data_max - geom->axis[SCALE_ABSCISSA].data_min))/(ticks+1);
}
+
+ double pos = lower;
+
+ for (s = 0 ; s <= ticks; ++s)
+ {
+ draw_tick (cr, geom, orient, tickoversize,
+ s * interval * geom->axis[orient].scale,
+ tick_format_string, pos*tickscale);
+ pos += interval;
+ }
+ free(tick_format_string);
+
+ return true;
}
/* Set the scale for the ordinate */
-void
+bool
xrchart_write_yscale (cairo_t *cr, struct xrchart_geometry *geom,
double smin, double smax)
{
- xrchart_write_scale (cr, geom, smin, smax, SCALE_ORDINATE);
+ return xrchart_write_scale (cr, geom, smin, smax, SCALE_ORDINATE);
}
/* Set the scale for the abscissa */
-void
+bool
xrchart_write_xscale (cairo_t *cr, struct xrchart_geometry *geom,
double smin, double smax)
{
- xrchart_write_scale (cr, geom, smin, smax, SCALE_ABSCISSA);
+ return xrchart_write_scale (cr, geom, smin, smax, SCALE_ABSCISSA);
}
const int swatch = 20;
const int legend_top = geom->axis[SCALE_ORDINATE].data_max;
const int legend_bottom = legend_top -
- (vstep * geom->n_datasets + 2 * ypad );
+ (vstep * geom->n_datasets + 2 * ypad);
cairo_save (cr);
legend_bottom - legend_top);
cairo_stroke (cr);
- for (i = 0 ; i < geom->n_datasets ; ++i )
+ for (i = 0 ; i < geom->n_datasets ; ++i)
{
const int ypos = legend_top - vstep * (i + 1);
const int xpos = geom->legend_left + xpad;
double x1, y1;
double x2, y2;
- if ( lim_dim == XRCHART_DIM_Y )
+ if (lim_dim == XRCHART_DIM_Y)
{
- x1 = ( limit1 - intercept ) / slope;
- x2 = ( limit2 - intercept ) / slope;
+ x1 = (limit1 - intercept) / slope;
+ x2 = (limit2 - intercept) / slope;
y1 = limit1;
y2 = limit2;
}
cairo_line_to (cr, x2, y2);
cairo_stroke (cr);
}
-
+\f
void
-xrchart_text_extents (cairo_t *cr, const struct xrchart_geometry *geom,
- const char *utf8,
- double *width, double *height)
+xr_draw_chart (const struct chart_item *chart_item, cairo_t *cr,
+ double width, double height)
{
- PangoFontDescription *desc;
- PangoLayout *layout;
- int width_pango;
- int height_pango;
+ struct xrchart_geometry geom;
- desc = pango_font_description_from_string ("Sans");
- if (desc == NULL)
- return;
- pango_font_description_set_absolute_size (desc, geom->font_size * PANGO_SCALE);
- layout = pango_cairo_create_layout (cr);
- pango_layout_set_font_description (layout, desc);
- pango_layout_set_text (layout, utf8, -1);
- pango_layout_get_size (layout, &width_pango, &height_pango);
- *width = (double) width_pango / PANGO_SCALE;
- *height = (double) height_pango / PANGO_SCALE;
- g_object_unref (layout);
- pango_font_description_free (desc);
+ cairo_save (cr);
+ cairo_translate (cr, 0, height);
+ cairo_scale (cr, 1.0, -1.0);
+ xrchart_geometry_init (cr, &geom, width, height);
+ if (is_boxplot (chart_item))
+ xrchart_draw_boxplot (chart_item, cr, &geom);
+ else if (is_histogram_chart (chart_item))
+ xrchart_draw_histogram (chart_item, cr, &geom);
+ else if (is_np_plot_chart (chart_item))
+ xrchart_draw_np_plot (chart_item, cr, &geom);
+ else if (is_piechart (chart_item))
+ xrchart_draw_piechart (chart_item, cr, &geom);
+ else if (is_barchart (chart_item))
+ xrchart_draw_barchart (chart_item, cr, &geom);
+ else if (is_roc_chart (chart_item))
+ xrchart_draw_roc (chart_item, cr, &geom);
+ else if (is_scree (chart_item))
+ xrchart_draw_scree (chart_item, cr, &geom);
+ else if (is_spreadlevel_plot_chart (chart_item))
+ xrchart_draw_spreadlevel (chart_item, cr, &geom);
+ else if (is_scatterplot_chart (chart_item))
+ xrchart_draw_scatterplot (chart_item, cr, &geom);
+ else
+ NOT_REACHED ();
+ xrchart_geometry_free (cr, &geom);
+
+ cairo_restore (cr);
+}
+
+cairo_surface_t *
+xr_draw_image_chart (const struct chart_item *item,
+ const struct cell_color *fg,
+ const struct cell_color *bg)
+{
+ const int width = 640;
+ const int length = 480;
+
+ cairo_surface_t *surface = cairo_image_surface_create (
+ CAIRO_FORMAT_RGB24, width, length);
+ cairo_t *cr = cairo_create (surface);
+
+ cairo_set_source_rgb (cr, bg->r / 255.0, bg->g / 255.0, bg->b / 255.0);
+ cairo_paint (cr);
+
+ cairo_set_source_rgb (cr, fg->r / 255.0, fg->g / 255.0, fg->b / 255.0);
+ xr_draw_chart (item, cr, width, length);
+
+ cairo_destroy (cr);
+
+ return surface;
}
+
+char *
+xr_write_png_image (cairo_surface_t *surface,
+ const char *file_name_template, int number)
+{
+ const char *number_pos = strchr (file_name_template, '#');
+ char *file_name;
+ if (number_pos != NULL)
+ file_name = xasprintf ("%.*s%d%s.png",
+ (int) (number_pos - file_name_template),
+ file_name_template, number, number_pos + 1);
+ else
+ file_name = xasprintf ("%s.png", file_name_template);
+
+ cairo_status_t status = cairo_surface_write_to_png (surface, file_name);
+ if (status != CAIRO_STATUS_SUCCESS)
+ msg (ME, _("error writing output file `%s': %s"),
+ file_name, cairo_status_to_string (status));
+
+ return file_name;
+}
+
+char *
+xr_draw_png_chart (const struct chart_item *item,
+ const char *file_name_template, int number,
+ const struct cell_color *fg,
+ const struct cell_color *bg)
+{
+ cairo_surface_t *surface = xr_draw_image_chart (item, fg, bg);
+ char *file_name = xr_write_png_image (surface, file_name_template, number);
+ cairo_surface_destroy (surface);
+ return file_name;
+}
+
+char *
+xr_draw_eps_chart (const struct chart_item *item,
+ const char *file_name_template, int number,
+ const struct cell_color *fg,
+ const struct cell_color *bg)
+{
+ const int width = 640;
+ const int length = 480;
+
+ cairo_surface_t *surface;
+ 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.eps", (int) (number_pos - file_name_template),
+ file_name_template, number, number_pos + 1);
+ else
+ file_name = xasprintf ("%s.eps", file_name_template);
+
+ surface = cairo_ps_surface_create (file_name, width, length);
+ cairo_ps_surface_set_eps (surface, true);
+ cr = cairo_create (surface);
+
+ cairo_set_source_rgb (cr, bg->r / 255.0, bg->g / 255.0, bg->b / 255.0);
+ cairo_paint (cr);
+
+ cairo_set_source_rgb (cr, fg->r / 255.0, fg->g / 255.0, fg->b / 255.0);
+
+ xr_draw_chart (item, cr, width, length);
+
+ cairo_destroy (cr);
+ cairo_surface_destroy (surface);
+
+ return file_name;
+}
+
projects / pspp / blobdiff