/* PSPP - a program for statistical analysis.
- Copyright (C) 2009 Free Software Foundation, Inc.
+ Copyright (C) 2009, 2010, 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/cairo.h>
-
-#include <libpspp/assertion.h>
-#include <libpspp/start-date.h>
-#include <libpspp/version.h>
-#include <output/afm.h>
-#include <output/chart-provider.h>
-#include <output/manager.h>
-#include <output/output.h>
+#include "output/cairo.h"
+
+#include "libpspp/assertion.h"
+#include "libpspp/cast.h"
+#include "libpspp/message.h"
+#include "libpspp/start-date.h"
+#include "libpspp/str.h"
+#include "libpspp/string-map.h"
+#include "libpspp/version.h"
+#include "output/cairo-chart.h"
+#include "output/chart-item-provider.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/scree.h"
+#include "output/driver-provider.h"
+#include "output/message-item.h"
+#include "output/options.h"
+#include "output/render.h"
+#include "output/tab.h"
+#include "output/table-item.h"
+#include "output/table.h"
+#include "output/text-item.h"
#include <cairo/cairo-pdf.h>
#include <cairo/cairo-ps.h>
#include <pango/pangocairo.h>
#include <stdlib.h>
-#include "error.h"
-#include "intprops.h"
-#include "minmax.h"
-#include "xalloc.h"
+#include "gl/error.h"
+#include "gl/intprops.h"
+#include "gl/minmax.h"
+#include "gl/xalloc.h"
#include "gettext.h"
#define _(msgid) gettext (msgid)
-/* Cairo driver options: (defaults listed first)
-
- output-file="pspp.pdf"
- output-type=pdf|ps|png|svg
- paper-size=letter (see "papersize" file)
- orientation=portrait|landscape
- headers=on|off
-
- left-margin=0.5in
- right-margin=0.5in
- top-margin=0.5in
- bottom-margin=0.5in
-
- prop-font=serif
- emph-font=serif italic
- fixed-font=monospace
- font-size=10000
-
- line-gutter=1pt
- line-spacing=1pt
- line-width=0.5pt
- */
+/* This file uses TABLE_HORZ and TABLE_VERT enough to warrant abbreviating. */
+#define H TABLE_HORZ
+#define V TABLE_VERT
/* Measurements as we present to the rest of PSPP. */
#define XR_POINT PANGO_SCALE
return x / (double) XR_POINT;
}
-static int
-pt_to_xr (double x)
-{
- return x * XR_POINT + 0.5;
-}
-
/* Output types. */
enum xr_output_type
{
XR_SVG
};
+/* Cairo fonts. */
+enum xr_font_type
+ {
+ XR_FONT_PROPORTIONAL,
+ XR_FONT_EMPHASIS,
+ XR_FONT_FIXED,
+ XR_N_FONTS
+ };
+
/* A font for use with Cairo. */
struct xr_font
{
- char *string;
PangoFontDescription *desc;
PangoLayout *layout;
- PangoFontMetrics *metrics;
};
-/* Cairo output driver extension record. */
-struct xr_driver_ext
+/* An output item whose rendering is in progress. */
+struct xr_render_fsm
{
- cairo_t *cairo;
- struct xr_font fonts[OUTP_FONT_CNT];
-
- bool draw_headers; /* Draw headers at top of page? */
- int page_number; /* Current page number. */
+ /* Renders as much of itself as it can on the current page. Returns true
+ if rendering is complete, false if the output item needs another
+ page. */
+ bool (*render) (struct xr_render_fsm *, struct xr_driver *);
- int line_gutter; /* Space around lines. */
- int line_space; /* Space between lines. */
- int line_width; /* Width of lines. */
+ /* Destroys the output item. */
+ void (*destroy) (struct xr_render_fsm *);
};
-struct xr_driver_options
+/* Cairo output driver. */
+struct xr_driver
{
- struct outp_driver *driver;
+ struct output_driver driver;
- char *file_name; /* Output file name. */
- enum xr_output_type file_type; /* Type of output file. */
+ /* User parameters. */
+ struct xr_font fonts[XR_N_FONTS];
+ int width; /* Page width minus margins. */
+ int length; /* Page length minus margins and header. */
- bool portrait; /* Portrait mode? */
+ int left_margin; /* Left margin in XR units. */
+ int right_margin; /* Right margin in XR units. */
+ int top_margin; /* Top margin in XR units. */
+ int bottom_margin; /* Bottom margin in XR units. */
+
+ int line_gutter; /* Space around lines. */
+ int line_space; /* Space between lines. */
+ int line_width; /* Width of lines. */
- int paper_width; /* Width of paper before dropping margins. */
- int paper_length; /* Length of paper before dropping margins. */
- int left_margin; /* Left margin in XR units. */
- int right_margin; /* Right margin in XR units. */
- int top_margin; /* Top margin in XR units. */
- int bottom_margin; /* Bottom margin in XR units. */
+ /* Internal state. */
+ struct render_params *params;
+ int char_width, char_height;
+ char *command_name;
+ char *title;
+ char *subtitle;
+ cairo_t *cairo;
+ int page_number; /* Current page number. */
+ int y;
+ struct xr_render_fsm *fsm;
};
-static bool handle_option (void *options, const char *key,
- const struct string *val);
-static void draw_headers (struct outp_driver *this);
+static const struct output_driver_class cairo_driver_class;
+
+static void xr_driver_destroy_fsm (struct xr_driver *);
+static void xr_driver_run_fsm (struct xr_driver *);
-static bool load_font (struct outp_driver *this, struct xr_font *);
-static void free_font (struct xr_font *);
-static int text_width (struct outp_driver *, const char *, enum outp_font);
+static void xr_draw_line (void *, int bb[TABLE_N_AXES][2],
+ enum render_line_style styles[TABLE_N_AXES][2]);
+static void xr_measure_cell_width (void *, const struct table_cell *,
+ int *min, int *max);
+static int xr_measure_cell_height (void *, const struct table_cell *,
+ int width);
+static void xr_draw_cell (void *, const struct table_cell *,
+ int bb[TABLE_N_AXES][2],
+ int clip[TABLE_N_AXES][2]);
+
+static struct xr_render_fsm *xr_render_output_item (
+ struct xr_driver *, const struct output_item *);
\f
-/* Driver initialization. */
+/* Output driver basics. */
-static struct outp_driver *
-xr_allocate (const char *name, int types)
+static struct xr_driver *
+xr_driver_cast (struct output_driver *driver)
{
- struct outp_driver *this;
- struct xr_driver_ext *x;
- size_t i;
+ assert (driver->class == &cairo_driver_class);
+ return UP_CAST (driver, struct xr_driver, driver);
+}
+
+static struct driver_option *
+opt (struct output_driver *d, struct string_map *options, const char *key,
+ const char *default_value)
+{
+ return driver_option_get (d, options, key, default_value);
+}
+
+static PangoFontDescription *
+parse_font (struct output_driver *d, struct string_map *options,
+ const char *key, const char *default_value,
+ int default_points)
+{
+ PangoFontDescription *desc;
+ char *string;
- this = outp_allocate_driver (&cairo_class, name, types);
- this->width = this->length = 0;
- this->font_height = XR_POINT * 10;
- this->ext = x = xzalloc (sizeof *x);
- x->cairo = NULL;
- x->fonts[OUTP_FIXED].string = xstrdup ("monospace");
- x->fonts[OUTP_PROPORTIONAL].string = xstrdup ("serif");
- x->fonts[OUTP_EMPHASIS].string = xstrdup ("serif italic");
- for (i = 0; i < OUTP_FONT_CNT; i++)
+ /* Parse KEY as a font description. */
+ string = parse_string (opt (d, options, key, default_value));
+ desc = pango_font_description_from_string (string);
+ if (desc == NULL)
{
- struct xr_font *font = &x->fonts[i];
- font->desc = NULL;
- font->metrics = NULL;
- font->layout = NULL;
+ error (0, 0, _("`%s': bad font specification"), string);
+
+ /* Fall back to DEFAULT_VALUE, which had better be a valid font
+ description. */
+ desc = pango_font_description_from_string (default_value);
+ assert (desc != NULL);
}
- x->draw_headers = true;
- x->page_number = 0;
- x->line_gutter = XR_POINT;
- x->line_space = XR_POINT;
- x->line_width = XR_POINT / 2;
+ free (string);
+
+ /* If the font description didn't include an explicit font size, then set it
+ to DEFAULT_POINTS. */
+ if (!(pango_font_description_get_set_fields (desc) & PANGO_FONT_MASK_SIZE))
+ pango_font_description_set_size (desc,
+ default_points / 1000.0 * PANGO_SCALE);
+
+ return desc;
+}
+
+static struct xr_driver *
+xr_allocate (const char *name, int device_type, struct string_map *o)
+{
+ int paper_width, paper_length;
+ struct output_driver *d;
+ struct xr_driver *xr;
+ int font_points;
+
+ xr = xzalloc (sizeof *xr);
+ d = &xr->driver;
+ output_driver_init (d, &cairo_driver_class, name, device_type);
+
+ font_points = parse_int (opt (d, o, "font-size", "10000"),
+ 1000, 1000000);
+ xr->fonts[XR_FONT_FIXED].desc = parse_font (d, o, "fixed-font", "monospace",
+ font_points);
+ xr->fonts[XR_FONT_PROPORTIONAL].desc = parse_font (d, o, "prop-font",
+ "serif", font_points);
+ xr->fonts[XR_FONT_EMPHASIS].desc = parse_font (d, o, "emph-font",
+ "serif italic", font_points);
+
+ xr->line_gutter = XR_POINT;
+ xr->line_space = XR_POINT;
+ xr->line_width = XR_POINT / 2;
+ xr->page_number = 0;
+
+ parse_paper_size (opt (d, o, "paper-size", ""), &paper_width, &paper_length);
+ xr->left_margin = parse_dimension (opt (d, o, "left-margin", ".5in"));
+ xr->right_margin = parse_dimension (opt (d, o, "right-margin", ".5in"));
+ xr->top_margin = parse_dimension (opt (d, o, "top-margin", ".5in"));
+ xr->bottom_margin = parse_dimension (opt (d, o, "bottom-margin", ".5in"));
+
+ xr->width = paper_width - xr->left_margin - xr->right_margin;
+ xr->length = paper_length - xr->top_margin - xr->bottom_margin;
+
+ return xr;
+}
- return this;
+static bool
+xr_is_72dpi (cairo_t *cr)
+{
+ cairo_surface_type_t type;
+ cairo_surface_t *surface;
+
+ surface = cairo_get_target (cr);
+ type = cairo_surface_get_type (surface);
+ return type == CAIRO_SURFACE_TYPE_PDF || type == CAIRO_SURFACE_TYPE_PS;
}
static bool
-xr_set_cairo (struct outp_driver *this, cairo_t *cairo)
+xr_set_cairo (struct xr_driver *xr, cairo_t *cairo)
{
- struct xr_driver_ext *x = this->ext;
+ PangoContext *context;
+ PangoFontMap *map;
int i;
- x->cairo = cairo;
+ xr->cairo = cairo;
- cairo_set_line_width (x->cairo, xr_to_pt (x->line_width));
+ cairo_set_line_width (xr->cairo, xr_to_pt (xr->line_width));
- for (i = 0; i < OUTP_FONT_CNT; i++)
- if (!load_font (this, &x->fonts[i]))
- return false;
+ map = pango_cairo_font_map_get_default ();
+ context = pango_cairo_font_map_create_context (PANGO_CAIRO_FONT_MAP (map));
+ if (xr_is_72dpi (cairo))
+ {
+ /* Pango seems to always scale fonts according to the DPI specified
+ in the font map, even if the surface has a real DPI. The default
+ DPI is 96, so on a 72 DPI device fonts end up being 96/72 = 133%
+ of their desired size. We deal with this by fixing the resolution
+ here. Presumably there is a better solution, but what? */
+ pango_cairo_context_set_resolution (context, 72.0);
+ }
- this->fixed_width = text_width (this, "0", OUTP_FIXED);
- this->prop_em_width = text_width (this, "0", OUTP_PROPORTIONAL);
+ xr->char_width = 0;
+ xr->char_height = 0;
+ for (i = 0; i < XR_N_FONTS; i++)
+ {
+ struct xr_font *font = &xr->fonts[i];
+ int char_width, char_height;
- this->horiz_line_width[OUTP_L_NONE] = 0;
- this->horiz_line_width[OUTP_L_SINGLE] = 2 * x->line_gutter + x->line_width;
- this->horiz_line_width[OUTP_L_DOUBLE] = (2 * x->line_gutter + x->line_space
- + 2 * x->line_width);
- memcpy (this->vert_line_width, this->horiz_line_width,
- sizeof this->vert_line_width);
+ font->layout = pango_layout_new (context);
+ pango_layout_set_font_description (font->layout, font->desc);
- return true;
-}
+ pango_layout_set_text (font->layout, "0", 1);
+ pango_layout_get_size (font->layout, &char_width, &char_height);
+ xr->char_width = MAX (xr->char_width, char_width);
+ xr->char_height = MAX (xr->char_height, char_height);
+ }
-struct outp_driver *
-xr_create_driver (cairo_t *cairo)
-{
- struct outp_driver *this;
+ g_object_unref (G_OBJECT (context));
- this = xr_allocate ("cairo", 0);
- this->width = INT_MAX / 8;
- this->length = INT_MAX / 8;
- if (!xr_set_cairo (this, cairo))
+ if (xr->params == NULL)
{
- this->class->close_driver (this);
- outp_free_driver (this);
- return NULL;
+ int single_width, double_width;
+
+ xr->params = xmalloc (sizeof *xr->params);
+ xr->params->draw_line = xr_draw_line;
+ xr->params->measure_cell_width = xr_measure_cell_width;
+ xr->params->measure_cell_height = xr_measure_cell_height;
+ xr->params->draw_cell = xr_draw_cell;
+ xr->params->aux = xr;
+ xr->params->size[H] = xr->width;
+ xr->params->size[V] = xr->length;
+ xr->params->font_size[H] = xr->char_width;
+ xr->params->font_size[V] = xr->char_height;
+
+ single_width = 2 * xr->line_gutter + xr->line_width;
+ double_width = 2 * xr->line_gutter + xr->line_space + 2 * xr->line_width;
+ for (i = 0; i < TABLE_N_AXES; i++)
+ {
+ xr->params->line_widths[i][RENDER_LINE_NONE] = 0;
+ xr->params->line_widths[i][RENDER_LINE_SINGLE] = single_width;
+ xr->params->line_widths[i][RENDER_LINE_DOUBLE] = double_width;
+ }
}
- return this;
+
+ return true;
}
-static bool
-xr_open_driver (const char *name, int types, struct substring option_string)
+static struct output_driver *
+xr_create (const char *file_name, enum settings_output_devices device_type,
+ struct string_map *o, enum xr_output_type file_type)
{
- struct outp_driver *this;
- struct xr_driver_ext *x;
- struct xr_driver_options options;
+ enum { MIN_WIDTH = 3, MIN_LENGTH = 3 };
+ struct output_driver *d;
+ struct xr_driver *xr;
cairo_surface_t *surface;
cairo_status_t status;
double width_pt, length_pt;
- this = xr_allocate (name, types);
- x = this->ext;
-
- options.driver = this;
- options.file_name = xstrdup ("pspp.pdf");
- options.file_type = XR_PDF;
- options.portrait = true;
- outp_get_paper_size ("", &options.paper_width, &options.paper_length);
- options.left_margin = XR_INCH / 2;
- options.right_margin = XR_INCH / 2;
- options.top_margin = XR_INCH / 2;
- options.bottom_margin = XR_INCH / 2;
-
- outp_parse_options (this->name, option_string, handle_option, &options);
-
- width_pt = options.paper_width / 1000.0;
- length_pt = options.paper_length / 1000.0;
- if (options.portrait)
- {
- this->width = pt_to_xr (width_pt);
- this->length = pt_to_xr (length_pt);
- }
- else
- {
- this->width = pt_to_xr (width_pt);
- this->length = pt_to_xr (length_pt);
- }
- if (x->draw_headers)
- options.top_margin += 3 * this->font_height;
- this->width -= options.left_margin + options.right_margin;
- this->length -= options.top_margin + options.bottom_margin;
-
- if (options.file_type == XR_PDF)
- surface = cairo_pdf_surface_create (options.file_name,
- width_pt, length_pt);
- else if (options.file_type == XR_PS)
- surface = cairo_ps_surface_create (options.file_name, width_pt, length_pt);
- else if (options.file_type == XR_SVG)
- surface = cairo_svg_surface_create (options.file_name,
- width_pt, length_pt);
+ xr = xr_allocate (file_name, device_type, o);
+ d = &xr->driver;
+
+ width_pt = (xr->width + xr->left_margin + xr->right_margin) / 1000.0;
+ length_pt = (xr->length + xr->top_margin + xr->bottom_margin) / 1000.0;
+ if (file_type == XR_PDF)
+ surface = cairo_pdf_surface_create (file_name, width_pt, length_pt);
+ else if (file_type == XR_PS)
+ surface = cairo_ps_surface_create (file_name, width_pt, length_pt);
+ else if (file_type == XR_SVG)
+ surface = cairo_svg_surface_create (file_name, width_pt, length_pt);
else
NOT_REACHED ();
status = cairo_surface_status (surface);
if (status != CAIRO_STATUS_SUCCESS)
{
- error (0, 0, _("opening output file \"%s\": %s"),
- options.file_name, cairo_status_to_string (status));
+ error (0, 0, _("error opening output file `%s': %s"),
+ file_name, cairo_status_to_string (status));
cairo_surface_destroy (surface);
goto error;
}
- x->cairo = cairo_create (surface);
+ xr->cairo = cairo_create (surface);
cairo_surface_destroy (surface);
- cairo_translate (x->cairo,
- xr_to_pt (options.left_margin),
- xr_to_pt (options.top_margin));
+ if (!xr_set_cairo (xr, xr->cairo))
+ goto error;
+
+ cairo_save (xr->cairo);
+ xr_driver_next_page (xr, xr->cairo);
- if (this->length / this->font_height < 15)
+ if (xr->width / xr->char_width < MIN_WIDTH)
{
- error (0, 0, _("The defined page is not long "
- "enough to hold margins and headers, plus least 15 "
- "lines of the default fonts. In fact, there's only "
- "room for %d lines."),
- this->length / this->font_height);
+ error (0, 0, _("The defined page is not wide enough to hold at least %d "
+ "characters in the default font. In fact, there's only "
+ "room for %d characters."),
+ MIN_WIDTH,
+ xr->width / xr->char_width);
goto error;
}
- if (!xr_set_cairo (this, x->cairo))
- goto error;
+ if (xr->length / xr->char_height < MIN_LENGTH)
+ {
+ error (0, 0, _("The defined page is not long enough to hold at least %d "
+ "lines in the default font. In fact, there's only "
+ "room for %d lines."),
+ MIN_LENGTH,
+ xr->length / xr->char_height);
+ goto error;
+ }
- outp_register_driver (this);
- free (options.file_name);
- return true;
+ return &xr->driver;
error:
- this->class->close_driver (this);
- outp_free_driver (this);
- free (options.file_name);
- return false;
+ output_driver_destroy (&xr->driver);
+ return NULL;
}
-static bool
-xr_close_driver (struct outp_driver *this)
+static struct output_driver *
+xr_pdf_create (const char *file_name, enum settings_output_devices device_type,
+ struct string_map *o)
+{
+ return xr_create (file_name, device_type, o, XR_PDF);
+}
+
+static struct output_driver *
+xr_ps_create (const char *file_name, enum settings_output_devices device_type,
+ struct string_map *o)
{
- struct xr_driver_ext *x = this->ext;
- bool ok = true;
+ return xr_create (file_name, device_type, o, XR_PS);
+}
+
+static struct output_driver *
+xr_svg_create (const char *file_name, enum settings_output_devices device_type,
+ struct string_map *o)
+{
+ return xr_create (file_name, device_type, o, XR_SVG);
+}
+
+static void
+xr_destroy (struct output_driver *driver)
+{
+ struct xr_driver *xr = xr_driver_cast (driver);
size_t i;
- if (x->cairo != NULL)
+ xr_driver_destroy_fsm (xr);
+
+ if (xr->cairo != NULL)
{
cairo_status_t status;
- cairo_surface_finish (cairo_get_target (x->cairo));
- status = cairo_status (x->cairo);
+ cairo_surface_finish (cairo_get_target (xr->cairo));
+ status = cairo_status (xr->cairo);
if (status != CAIRO_STATUS_SUCCESS)
- error (0, 0, _("error writing output file for %s driver: %s"),
- this->name, cairo_status_to_string (status));
- cairo_destroy (x->cairo);
+ error (0, 0, _("error drawing output for %s driver: %s"),
+ output_driver_get_name (driver),
+ cairo_status_to_string (status));
+ cairo_destroy (xr->cairo);
}
- for (i = 0; i < OUTP_FONT_CNT; i++)
- free_font (&x->fonts[i]);
- free (x);
+ free (xr->command_name);
+ for (i = 0; i < XR_N_FONTS; i++)
+ {
+ struct xr_font *font = &xr->fonts[i];
+
+ if (font->desc != NULL)
+ pango_font_description_free (font->desc);
+ if (font->layout != NULL)
+ g_object_unref (font->layout);
+ }
- return ok;
+ free (xr->params);
+ free (xr);
}
-/* Generic option types. */
-enum
+static void
+xr_flush (struct output_driver *driver)
{
- output_file_arg,
- output_type_arg,
- paper_size_arg,
- orientation_arg,
- line_style_arg,
- boolean_arg,
- dimension_arg,
- string_arg,
- nonneg_int_arg
-};
+ struct xr_driver *xr = xr_driver_cast (driver);
-/* All the options that the Cairo driver supports. */
-static const struct outp_option option_tab[] =
-{
- {"output-file", output_file_arg,0},
- {"output-type", output_type_arg,0},
- {"paper-size", paper_size_arg, 0},
- {"orientation", orientation_arg,0},
-
- {"headers", boolean_arg, 1},
-
- {"prop-font", string_arg, OUTP_PROPORTIONAL},
- {"emph-font", string_arg, OUTP_EMPHASIS},
- {"fixed-font", string_arg, OUTP_FIXED},
-
- {"left-margin", dimension_arg, 0},
- {"right-margin", dimension_arg, 1},
- {"top-margin", dimension_arg, 2},
- {"bottom-margin", dimension_arg, 3},
- {"font-size", dimension_arg, 4},
- {"line-width", dimension_arg, 5},
- {"line-gutter", dimension_arg, 6},
- {"line-width", dimension_arg, 7},
- {NULL, 0, 0},
-};
+ cairo_surface_flush (cairo_get_target (xr->cairo));
+}
-static bool
-handle_option (void *options_, const char *key, const struct string *val)
+static void
+xr_init_caption_cell (const char *caption, struct table_cell *cell)
+{
+ cell->contents = caption;
+ cell->options = TAB_LEFT;
+ cell->destructor = NULL;
+}
+
+static struct render_page *
+xr_render_table_item (struct xr_driver *xr, const struct table_item *item,
+ int *caption_widthp, int *caption_heightp)
{
- struct xr_driver_options *options = options_;
- struct outp_driver *this = options->driver;
- struct xr_driver_ext *x = this->ext;
- int subcat;
- char *value = ds_cstr (val);
+ const char *caption = table_item_get_caption (item);
- switch (outp_match_keyword (key, option_tab, &subcat))
+ if (caption != NULL)
{
- case -1:
- error (0, 0,
- _("unknown configuration parameter `%s' for %s device "
- "driver"), key, this->class->name);
- break;
- case output_file_arg:
- free (options->file_name);
- options->file_name = xstrdup (value);
- break;
- case output_type_arg:
- if (!strcmp (value, "pdf"))
- options->file_type = XR_PDF;
- else if (!strcmp (value, "ps"))
- options->file_type = XR_PS;
- else if (!strcmp (value, "svg"))
- options->file_type = XR_SVG;
- else
- {
- error (0, 0, _("unknown Cairo output type \"%s\""), value);
- return false;
- }
- break;
- case paper_size_arg:
- outp_get_paper_size (value,
- &options->paper_width, &options->paper_length);
- break;
- case orientation_arg:
- if (!strcmp (value, "portrait"))
- options->portrait = true;
- else if (!strcmp (value, "landscape"))
- options->portrait = false;
- else
- error (0, 0, _("unknown orientation `%s' (valid orientations are "
- "`portrait' and `landscape')"), value);
- break;
- case boolean_arg:
- if (!strcmp (value, "on") || !strcmp (value, "true")
- || !strcmp (value, "yes") || atoi (value))
- x->draw_headers = true;
- else if (!strcmp (value, "off") || !strcmp (value, "false")
- || !strcmp (value, "no") || !strcmp (value, "0"))
- x->draw_headers = false;
- else
- {
- error (0, 0, _("boolean value expected for %s"), key);
- return false;
- }
- break;
- case dimension_arg:
- {
- int dimension = outp_evaluate_dimension (value);
-
- if (dimension <= 0)
- break;
- switch (subcat)
- {
- case 0:
- options->left_margin = dimension;
- break;
- case 1:
- options->right_margin = dimension;
- break;
- case 2:
- options->top_margin = dimension;
- break;
- case 3:
- options->bottom_margin = dimension;
- break;
- case 4:
- this->font_height = dimension;
- break;
- case 5:
- x->line_width = dimension;
- break;
- case 6:
- x->line_gutter = dimension;
- break;
- case 7:
- x->line_width = dimension;
- break;
- default:
- NOT_REACHED ();
- }
- }
- break;
- case string_arg:
- free (x->fonts[subcat].string);
- x->fonts[subcat].string = ds_xstrdup (val);
- break;
- default:
- NOT_REACHED ();
+ /* XXX doesn't do well with very large captions */
+ int min_width, max_width;
+ struct table_cell cell;
+
+ xr_init_caption_cell (caption, &cell);
+
+ xr_measure_cell_width (xr, &cell, &min_width, &max_width);
+ *caption_widthp = MIN (max_width, xr->width);
+ *caption_heightp = xr_measure_cell_height (xr, &cell, *caption_widthp);
}
+ else
+ *caption_heightp = 0;
- return true;
+ return render_page_create (xr->params, table_item_get_table (item));
}
-\f
-/* Basic file operations. */
static void
-xr_open_page (struct outp_driver *this)
+xr_submit (struct output_driver *driver, const struct output_item *output_item)
{
- struct xr_driver_ext *x = this->ext;
+ struct xr_driver *xr = xr_driver_cast (driver);
+
+ xr_driver_output_item (xr, output_item);
+ while (xr_driver_need_new_page (xr))
+ {
+ cairo_restore (xr->cairo);
+ cairo_show_page (xr->cairo);
+ cairo_save (xr->cairo);
+ xr_driver_next_page (xr, xr->cairo);
+ }
+}
+\f
+/* Functions for rendering a series of output items to a series of Cairo
+ contexts, with pagination.
- x->page_number++;
+ Used by PSPPIRE for printing, and by the basic Cairo output driver above as
+ its underlying implementation.
- if (x->draw_headers)
- draw_headers (this);
+ See the big comment in cairo.h for intended usage. */
+
+/* Gives new page CAIRO to XR for output. CAIRO may be null to skip actually
+ rendering the page (which might be useful to find out how many pages an
+ output document has without actually rendering it). */
+void
+xr_driver_next_page (struct xr_driver *xr, cairo_t *cairo)
+{
+ if (cairo != NULL)
+ cairo_translate (cairo,
+ xr_to_pt (xr->left_margin),
+ xr_to_pt (xr->top_margin));
+
+ xr->page_number++;
+ xr->cairo = cairo;
+ xr->y = 0;
+ xr_driver_run_fsm (xr);
}
-static void
-xr_close_page (struct outp_driver *this)
+/* Start rendering OUTPUT_ITEM to XR. Only valid if XR is not in the middle of
+ rendering a previous output item, that is, only if xr_driver_need_new_page()
+ returns false. */
+void
+xr_driver_output_item (struct xr_driver *xr,
+ const struct output_item *output_item)
{
- struct xr_driver_ext *x = this->ext;
- cairo_show_page (x->cairo);
+ assert (xr->fsm == NULL);
+ xr->fsm = xr_render_output_item (xr, output_item);
+ xr_driver_run_fsm (xr);
}
-static void
-xr_output_chart (struct outp_driver *this, const struct chart *chart)
+/* Returns true if XR is in the middle of rendering an output item and needs a
+ new page to be appended using xr_driver_next_page() to make progress,
+ otherwise false. */
+bool
+xr_driver_need_new_page (const struct xr_driver *xr)
{
- struct xr_driver_ext *x = this->ext;
- struct chart_geometry geom;
+ return xr->fsm != NULL;
+}
- outp_eject_page (this);
- outp_open_page (this);
+/* Returns true if the current page doesn't have any content yet. */
+bool
+xr_driver_is_page_blank (const struct xr_driver *xr)
+{
+ return xr->y == 0;
+}
- cairo_save (x->cairo);
- cairo_translate (x->cairo, 0.0, xr_to_pt (this->length));
- cairo_scale (x->cairo, 1.0, -1.0);
- chart_geometry_init (x->cairo, &geom,
- xr_to_pt (this->width), xr_to_pt (this->length));
- chart_draw (chart, x->cairo, &geom);
- chart_geometry_free (x->cairo, &geom);
- cairo_restore (x->cairo);
+static void
+xr_driver_destroy_fsm (struct xr_driver *xr)
+{
+ if (xr->fsm != NULL)
+ {
+ xr->fsm->destroy (xr->fsm);
+ xr->fsm = NULL;
+ }
+}
- outp_close_page (this);
+static void
+xr_driver_run_fsm (struct xr_driver *xr)
+{
+ if (xr->fsm != NULL && !xr->fsm->render (xr->fsm, xr))
+ xr_driver_destroy_fsm (xr);
}
\f
-/* Draws a line from (x0,y0) to (x1,y1). */
static void
-dump_line (struct outp_driver *this, int x0, int y0, int x1, int y1)
+xr_layout_cell (struct xr_driver *, const struct table_cell *,
+ int bb[TABLE_N_AXES][2], int clip[TABLE_N_AXES][2],
+ PangoWrapMode, int *width, int *height);
+
+static void
+dump_line (struct xr_driver *xr, int x0, int y0, int x1, int y1)
{
- struct xr_driver_ext *x = this->ext;
- cairo_new_path (x->cairo);
- cairo_move_to (x->cairo, xr_to_pt (x0), xr_to_pt (y0));
- cairo_line_to (x->cairo, xr_to_pt (x1), xr_to_pt (y1));
- cairo_stroke (x->cairo);
+ cairo_new_path (xr->cairo);
+ cairo_move_to (xr->cairo, xr_to_pt (x0), xr_to_pt (y0 + xr->y));
+ cairo_line_to (xr->cairo, xr_to_pt (x1), xr_to_pt (y1 + xr->y));
+ cairo_stroke (xr->cairo);
}
/* Draws a horizontal line X0...X2 at Y if LEFT says so,
Draws a horizontal line X1...X3 at Y if RIGHT says so,
shortening it to X2...X3 if SHORTEN is true. */
static void
-horz_line (struct outp_driver *this,
- int x0, int x1, int x2, int x3, int y,
- enum outp_line_style left, enum outp_line_style right,
+horz_line (struct xr_driver *xr, int x0, int x1, int x2, int x3, int y,
+ enum render_line_style left, enum render_line_style right,
bool shorten)
{
- if (left != OUTP_L_NONE && right != OUTP_L_NONE && !shorten)
- dump_line (this, x0, y, x3, y);
+ if (left != RENDER_LINE_NONE && right != RENDER_LINE_NONE && !shorten)
+ dump_line (xr, x0, y, x3, y);
else
{
- if (left != OUTP_L_NONE)
- dump_line (this, x0, y, shorten ? x1 : x2, y);
- if (right != OUTP_L_NONE)
- dump_line (this, shorten ? x2 : x1, y, x3, y);
+ if (left != RENDER_LINE_NONE)
+ dump_line (xr, x0, y, shorten ? x1 : x2, y);
+ if (right != RENDER_LINE_NONE)
+ dump_line (xr, shorten ? x2 : x1, y, x3, y);
}
}
Draws a vertical line Y1...Y3 at X if BOTTOM says so,
shortening it to Y2...Y3 if SHORTEN is true. */
static void
-vert_line (struct outp_driver *this,
- int y0, int y1, int y2, int y3, int x,
- enum outp_line_style top, enum outp_line_style bottom,
+vert_line (struct xr_driver *xr, int y0, int y1, int y2, int y3, int x,
+ enum render_line_style top, enum render_line_style bottom,
bool shorten)
{
- if (top != OUTP_L_NONE && bottom != OUTP_L_NONE && !shorten)
- dump_line (this, x, y0, x, y3);
+ if (top != RENDER_LINE_NONE && bottom != RENDER_LINE_NONE && !shorten)
+ dump_line (xr, x, y0, x, y3);
else
{
- if (top != OUTP_L_NONE)
- dump_line (this, x, y0, x, shorten ? y1 : y2);
- if (bottom != OUTP_L_NONE)
- dump_line (this, x, shorten ? y2 : y1, x, y3);
+ if (top != RENDER_LINE_NONE)
+ dump_line (xr, x, y0, x, shorten ? y1 : y2);
+ if (bottom != RENDER_LINE_NONE)
+ dump_line (xr, x, shorten ? y2 : y1, x, y3);
}
}
-/* Draws a generalized intersection of lines in the rectangle
- (X0,Y0)-(X3,Y3). The line coming from the top to the center
- is of style TOP, from left to center of style LEFT, from
- bottom to center of style BOTTOM, and from right to center of
- style RIGHT. */
static void
-xr_line (struct outp_driver *this,
- int x0, int y0, int x3, int y3,
- enum outp_line_style top, enum outp_line_style left,
- enum outp_line_style bottom, enum outp_line_style right)
+xr_draw_line (void *xr_, int bb[TABLE_N_AXES][2],
+ enum render_line_style styles[TABLE_N_AXES][2])
{
+ const int x0 = bb[H][0];
+ const int y0 = bb[V][0];
+ const int x3 = bb[H][1];
+ const int y3 = bb[V][1];
+ const int top = styles[H][0];
+ const int left = styles[V][0];
+ const int bottom = styles[H][1];
+ const int right = styles[V][1];
+
/* The algorithm here is somewhat subtle, to allow it to handle
all the kinds of intersections that we need.
| # # |
y3 |________#_____#_______|
*/
- struct xr_driver_ext *ext = this->ext;
+ struct xr_driver *xr = xr_;
/* Offset from center of each line in a pair of double lines. */
- int double_line_ofs = (ext->line_space + ext->line_width) / 2;
+ int double_line_ofs = (xr->line_space + xr->line_width) / 2;
/* Are the lines along each axis single or double?
(It doesn't make sense to have different kinds of line on the
same axis, so we don't try to gracefully handle that case.) */
- bool double_vert = top == OUTP_L_DOUBLE || bottom == OUTP_L_DOUBLE;
- bool double_horz = left == OUTP_L_DOUBLE || right == OUTP_L_DOUBLE;
+ bool double_vert = top == RENDER_LINE_DOUBLE || bottom == RENDER_LINE_DOUBLE;
+ bool double_horz = left == RENDER_LINE_DOUBLE || right == RENDER_LINE_DOUBLE;
/* When horizontal lines are doubled,
the left-side line along y1 normally runs from x0 to x2,
single. We actually choose to cut off the line anyhow, as
shown in the first diagram above.
*/
- bool shorten_y1_lines = top == OUTP_L_DOUBLE;
- bool shorten_y2_lines = bottom == OUTP_L_DOUBLE;
+ bool shorten_y1_lines = top == RENDER_LINE_DOUBLE;
+ bool shorten_y2_lines = bottom == RENDER_LINE_DOUBLE;
bool shorten_yc_line = shorten_y1_lines && shorten_y2_lines;
int horz_line_ofs = double_vert ? double_line_ofs : 0;
int xc = (x0 + x3) / 2;
int x1 = xc - horz_line_ofs;
int x2 = xc + horz_line_ofs;
- bool shorten_x1_lines = left == OUTP_L_DOUBLE;
- bool shorten_x2_lines = right == OUTP_L_DOUBLE;
+ bool shorten_x1_lines = left == RENDER_LINE_DOUBLE;
+ bool shorten_x2_lines = right == RENDER_LINE_DOUBLE;
bool shorten_xc_line = shorten_x1_lines && shorten_x2_lines;
int vert_line_ofs = double_horz ? double_line_ofs : 0;
int yc = (y0 + y3) / 2;
int y2 = yc + vert_line_ofs;
if (!double_horz)
- horz_line (this, x0, x1, x2, x3, yc, left, right, shorten_yc_line);
+ horz_line (xr, x0, x1, x2, x3, yc, left, right, shorten_yc_line);
else
{
- horz_line (this, x0, x1, x2, x3, y1, left, right, shorten_y1_lines);
- horz_line (this, x0, x1, x2, x3, y2, left, right, shorten_y2_lines);
+ horz_line (xr, x0, x1, x2, x3, y1, left, right, shorten_y1_lines);
+ horz_line (xr, x0, x1, x2, x3, y2, left, right, shorten_y2_lines);
}
if (!double_vert)
- vert_line (this, y0, y1, y2, y3, xc, top, bottom, shorten_xc_line);
+ vert_line (xr, y0, y1, y2, y3, xc, top, bottom, shorten_xc_line);
else
{
- vert_line (this, y0, y1, y2, y3, x1, top, bottom, shorten_x1_lines);
- vert_line (this, y0, y1, y2, y3, x2, top, bottom, shorten_x2_lines);
+ vert_line (xr, y0, y1, y2, y3, x1, top, bottom, shorten_x1_lines);
+ vert_line (xr, y0, y1, y2, y3, x2, top, bottom, shorten_x2_lines);
}
}
-/* Writes STRING at location (X,Y) trimmed to the given MAX_WIDTH
- and with the given JUSTIFICATION for THIS driver. */
-static int
-draw_text (struct outp_driver *this,
- const char *string, int x, int y, int max_width,
- enum outp_justification justification)
-{
- struct outp_text text;
- int width;
-
- text.font = OUTP_PROPORTIONAL;
- text.justification = justification;
- text.string = ss_cstr (string);
- text.h = max_width;
- text.v = this->font_height;
- text.x = x;
- text.y = y;
- this->class->text_metrics (this, &text, &width, NULL);
- this->class->text_draw (this, &text);
- return width;
-}
-
-/* Writes STRING at location (X,Y) trimmed to the given MAX_WIDTH
- and with the given JUSTIFICATION for THIS driver. */
-static int
-text_width (struct outp_driver *this, const char *string, enum outp_font font)
+static void
+xr_measure_cell_width (void *xr_, const struct table_cell *cell,
+ int *min_width, int *max_width)
{
- struct outp_text text;
- int width;
-
- text.font = font;
- text.justification = OUTP_LEFT;
- text.string = ss_cstr (string);
- text.h = INT_MAX;
- text.v = this->font_height;
- text.x = 0;
- text.y = 0;
- this->class->text_metrics (this, &text, &width, NULL);
- return width;
+ struct xr_driver *xr = xr_;
+ int bb[TABLE_N_AXES][2];
+ int clip[TABLE_N_AXES][2];
+ int h;
+
+ bb[H][0] = 0;
+ bb[H][1] = INT_MAX;
+ bb[V][0] = 0;
+ bb[V][1] = INT_MAX;
+ clip[H][0] = clip[H][1] = clip[V][0] = clip[V][1] = 0;
+ xr_layout_cell (xr, cell, bb, clip, PANGO_WRAP_WORD, max_width, &h);
+
+ bb[H][1] = 1;
+ xr_layout_cell (xr, cell, bb, clip, PANGO_WRAP_WORD, min_width, &h);
}
-/* Writes LEFT left-justified and RIGHT right-justified within
- (X0...X1) at Y. LEFT or RIGHT or both may be null. */
-static void
-draw_header_line (struct outp_driver *this,
- const char *left, const char *right,
- int x0, int x1, int y)
+static int
+xr_measure_cell_height (void *xr_, const struct table_cell *cell, int width)
{
- int right_width = 0;
- if (right != NULL)
- right_width = (draw_text (this, right, x0, y, x1 - x0, OUTP_RIGHT)
- + this->prop_em_width);
- if (left != NULL)
- draw_text (this, left, x0, y, x1 - x0 - right_width, OUTP_LEFT);
+ struct xr_driver *xr = xr_;
+ int bb[TABLE_N_AXES][2];
+ int clip[TABLE_N_AXES][2];
+ int w, h;
+
+ bb[H][0] = 0;
+ bb[H][1] = width;
+ bb[V][0] = 0;
+ bb[V][1] = INT_MAX;
+ clip[H][0] = clip[H][1] = clip[V][0] = clip[V][1] = 0;
+ xr_layout_cell (xr, cell, bb, clip, PANGO_WRAP_WORD, &w, &h);
+ return h;
}
-/* Draw top of page headers for THIS driver. */
static void
-draw_headers (struct outp_driver *this)
+xr_draw_cell (void *xr_, const struct table_cell *cell,
+ int bb[TABLE_N_AXES][2], int clip[TABLE_N_AXES][2])
{
- struct xr_driver_ext *ext = this->ext;
- char *r1, *r2;
- int x0, x1;
- int y;
-
- y = -3 * this->font_height;
- x0 = this->prop_em_width;
- x1 = this->width - this->prop_em_width;
-
- /* Draw box. */
- cairo_rectangle (ext->cairo, 0, xr_to_pt (y), xr_to_pt (this->width),
- xr_to_pt (2 * (this->font_height
- + ext->line_width + ext->line_gutter)));
- cairo_save (ext->cairo);
- cairo_set_source_rgb (ext->cairo, 0.9, 0.9, 0.9);
- cairo_fill_preserve (ext->cairo);
- cairo_restore (ext->cairo);
- cairo_stroke (ext->cairo);
-
- y += ext->line_width + ext->line_gutter;
-
- r1 = xasprintf (_("%s - Page %d"), get_start_date (), ext->page_number);
- r2 = xasprintf ("%s - %s", version, host_system);
+ struct xr_driver *xr = xr_;
+ int w, h;
- draw_header_line (this, outp_title, r1, x0, x1, y);
- y += this->font_height;
-
- draw_header_line (this, outp_subtitle, r2, x0, x1, y);
-
- free (r1);
- free (r2);
+ xr_layout_cell (xr, cell, bb, clip, PANGO_WRAP_WORD, &w, &h);
}
\f
-/* Format TEXT on THIS driver.
- If DRAW is nonzero, draw the text.
- The width of the widest line is stored into *WIDTH, if WIDTH
- is nonnull.
- The total height of the text written is stored into *HEIGHT,
- if HEIGHT is nonnull. */
static void
-text (struct outp_driver *this, const struct outp_text *text, bool draw,
- int *width, int *height)
+xr_layout_cell (struct xr_driver *xr, const struct table_cell *cell,
+ int bb[TABLE_N_AXES][2], int clip[TABLE_N_AXES][2],
+ PangoWrapMode wrap, int *width, int *height)
{
- struct xr_driver_ext *ext = this->ext;
- struct xr_font *font = &ext->fonts[text->font];
+ struct xr_font *font;
+
+ font = (cell->options & TAB_FIX ? &xr->fonts[XR_FONT_FIXED]
+ : cell->options & TAB_EMPH ? &xr->fonts[XR_FONT_EMPHASIS]
+ : &xr->fonts[XR_FONT_PROPORTIONAL]);
+
+ pango_layout_set_text (font->layout, cell->contents, -1);
- pango_layout_set_text (font->layout,
- text->string.string, text->string.length);
pango_layout_set_alignment (
font->layout,
- (text->justification == OUTP_RIGHT ? PANGO_ALIGN_RIGHT
- : text->justification == OUTP_LEFT ? PANGO_ALIGN_LEFT
+ ((cell->options & TAB_ALIGNMENT) == TAB_RIGHT ? PANGO_ALIGN_RIGHT
+ : (cell->options & TAB_ALIGNMENT) == TAB_LEFT ? PANGO_ALIGN_LEFT
: PANGO_ALIGN_CENTER));
- pango_layout_set_width (font->layout, text->h == INT_MAX ? -1 : text->h);
- pango_layout_set_wrap (font->layout, PANGO_WRAP_WORD_CHAR);
- /* XXX need to limit number of lines to those that fit in text->v. */
+ pango_layout_set_width (font->layout,
+ bb[H][1] == INT_MAX ? -1 : bb[H][1] - bb[H][0]);
+ pango_layout_set_wrap (font->layout, wrap);
- if (draw)
+ if (clip[H][0] != clip[H][1])
{
- int x = text->x;
- if (text->justification != OUTP_LEFT && text->h != INT_MAX)
+ cairo_save (xr->cairo);
+
+ if (clip[H][1] != INT_MAX || clip[V][1] != INT_MAX)
{
- int w, h, excess;
- pango_layout_get_size (font->layout, &w, &h);
- excess = text->h - w;
- if (excess > 0)
- {
- if (text->justification == OUTP_CENTER)
- x += excess / 2;
- else
- x += excess;
- }
+ double x0 = xr_to_pt (clip[H][0]);
+ double y0 = xr_to_pt (clip[V][0] + xr->y);
+ double x1 = xr_to_pt (clip[H][1]);
+ double y1 = xr_to_pt (clip[V][1] + xr->y);
+
+ cairo_rectangle (xr->cairo, x0, y0, x1 - x0, y1 - y0);
+ cairo_clip (xr->cairo);
}
- cairo_save (ext->cairo);
- cairo_translate (ext->cairo, xr_to_pt (text->x), xr_to_pt (text->y));
- pango_cairo_show_layout (ext->cairo, font->layout);
- cairo_restore (ext->cairo);
+
+ cairo_translate (xr->cairo,
+ xr_to_pt (bb[H][0]),
+ xr_to_pt (bb[V][0] + xr->y));
+ pango_cairo_show_layout (xr->cairo, font->layout);
+ cairo_restore (xr->cairo);
}
if (width != NULL || height != NULL)
{
int w, h;
+
pango_layout_get_size (font->layout, &w, &h);
if (width != NULL)
*width = w;
}
static void
-xr_text_metrics (struct outp_driver *this, const struct outp_text *t,
- int *width, int *height)
+xr_draw_title (struct xr_driver *xr, const char *title,
+ int title_width, int title_height)
{
- text (this, t, false, width, height);
+ struct table_cell cell;
+ int bb[TABLE_N_AXES][2];
+
+ xr_init_caption_cell (title, &cell);
+ bb[H][0] = 0;
+ bb[H][1] = title_width;
+ bb[V][0] = 0;
+ bb[V][1] = title_height;
+ xr_draw_cell (xr, &cell, bb, bb);
}
+\f
+struct output_driver_factory pdf_driver_factory = { "pdf", xr_pdf_create };
+struct output_driver_factory ps_driver_factory = { "ps", xr_ps_create };
+struct output_driver_factory svg_driver_factory = { "svg", xr_svg_create };
-static void
-xr_text_draw (struct outp_driver *this, const struct outp_text *t)
+static const struct output_driver_class cairo_driver_class =
{
- text (this, t, true, NULL, NULL);
+ "cairo",
+ xr_destroy,
+ xr_submit,
+ xr_flush,
+};
+\f
+/* GUI rendering helpers. */
+
+struct xr_rendering
+ {
+ struct output_item *item;
+
+ /* Table items. */
+ struct render_page *page;
+ struct xr_driver *xr;
+ int title_width;
+ int title_height;
+ };
+
+#define CHART_WIDTH 500
+#define CHART_HEIGHT 375
+
+struct xr_driver *
+xr_driver_create (cairo_t *cairo, struct string_map *options)
+{
+ struct xr_driver *xr = xr_allocate ("cairo", 0, options);
+ if (!xr_set_cairo (xr, cairo))
+ {
+ output_driver_destroy (&xr->driver);
+ return NULL;
+ }
+ return xr;
+}
+
+/* Destroy XR, which should have been created with xr_driver_create(). Any
+ cairo_t added to XR is not destroyed, because it is owned by the client. */
+void
+xr_driver_destroy (struct xr_driver *xr)
+{
+ if (xr != NULL)
+ {
+ xr->cairo = NULL;
+ output_driver_destroy (&xr->driver);
+ }
+}
+
+static struct xr_rendering *
+xr_rendering_create_text (struct xr_driver *xr, const char *text, cairo_t *cr)
+{
+ struct table_item *table_item;
+ struct xr_rendering *r;
+
+ table_item = table_item_create (table_from_string (0, text), NULL);
+ r = xr_rendering_create (xr, &table_item->output_item, cr);
+ table_item_unref (table_item);
+
+ return r;
+}
+
+struct xr_rendering *
+xr_rendering_create (struct xr_driver *xr, const struct output_item *item,
+ cairo_t *cr)
+{
+ struct xr_rendering *r = NULL;
+
+ if (is_text_item (item))
+ r = xr_rendering_create_text (xr, text_item_get_text (to_text_item (item)),
+ cr);
+ else if (is_message_item (item))
+ {
+ const struct message_item *message_item = to_message_item (item);
+ const struct msg *msg = message_item_get_msg (message_item);
+ char *s = msg_to_string (msg, NULL);
+ r = xr_rendering_create_text (xr, s, cr);
+ free (s);
+ }
+ else if (is_table_item (item))
+ {
+ r = xzalloc (sizeof *r);
+ r->item = output_item_ref (item);
+ r->xr = xr;
+ xr_set_cairo (xr, cr);
+ r->page = xr_render_table_item (xr, to_table_item (item),
+ &r->title_width, &r->title_height);
+ }
+ else if (is_chart_item (item))
+ {
+ r = xzalloc (sizeof *r);
+ r->item = output_item_ref (item);
+ }
+
+ return r;
+}
+
+void
+xr_rendering_measure (struct xr_rendering *r, int *w, int *h)
+{
+ if (is_table_item (r->item))
+ {
+ int w0 = render_page_get_size (r->page, H);
+ int w1 = r->title_width;
+ *w = MAX (w0, w1) / 1024;
+ *h = (render_page_get_size (r->page, V) + r->title_height) / 1024;
+ }
+ else
+ {
+ *w = CHART_WIDTH;
+ *h = CHART_HEIGHT;
+ }
+}
+
+/* Draws onto CR at least the region of R that is enclosed in (X,Y)-(X+W,Y+H),
+ and possibly some additional parts. */
+void
+xr_rendering_draw (struct xr_rendering *r, cairo_t *cr,
+ int x, int y, int w, int h)
+{
+ if (is_table_item (r->item))
+ {
+ struct xr_driver *xr = r->xr;
+
+ xr_set_cairo (xr, cr);
+
+ if (r->title_height > 0)
+ {
+ xr->y = 0;
+ xr_draw_title (xr, table_item_get_caption (to_table_item (r->item)),
+ r->title_width, r->title_height);
+ }
+
+ xr->y = r->title_height;
+ render_page_draw_region (r->page, x * 1024, (y * 1024) - r->title_height,
+ w * 1024, h * 1024);
+ }
+ else
+ xr_draw_chart (to_chart_item (r->item), cr,
+ 0, 0, CHART_WIDTH, CHART_HEIGHT);
+}
+
+void
+xr_draw_chart (const struct chart_item *chart_item, cairo_t *cr,
+ double x, double y, double width, double height)
+{
+ struct xrchart_geometry geom;
+
+ cairo_save (cr);
+ cairo_translate (cr, x, y + 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_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
+ NOT_REACHED ();
+ xrchart_geometry_free (cr, &geom);
+
+ cairo_restore (cr);
+}
+
+char *
+xr_draw_png_chart (const struct chart_item *item,
+ const char *file_name_template, int number)
+{
+ const int width = 640;
+ const int length = 480;
+
+ 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_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);
+
+ xr_draw_chart (item, cr, 0.0, 0.0, width, length);
+
+ status = cairo_surface_write_to_png (surface, file_name);
+ if (status != CAIRO_STATUS_SUCCESS)
+ error (0, 0, _("error writing output file `%s': %s"),
+ file_name, cairo_status_to_string (status));
+
+ cairo_destroy (cr);
+ cairo_surface_destroy (surface);
+
+ return file_name;
}
\f
-/* Attempts to load FONT, initializing its other members based on
- its 'string' member and the information in THIS. Returns true
- if successful, otherwise false. */
+struct xr_table_state
+ {
+ struct xr_render_fsm fsm;
+ struct table_item *table_item;
+ struct render_break x_break;
+ struct render_break y_break;
+ int caption_height;
+ };
+
static bool
-load_font (struct outp_driver *this, struct xr_font *font)
+xr_table_render (struct xr_render_fsm *fsm, struct xr_driver *xr)
{
- struct xr_driver_ext *x = this->ext;
- PangoContext *context;
- PangoLanguage *language;
+ struct xr_table_state *ts = UP_CAST (fsm, struct xr_table_state, fsm);
- font->desc = pango_font_description_from_string (font->string);
- if (font->desc == NULL)
+ for (;;)
{
- error (0, 0, _("\"%s\": bad font specification"), font->string);
- return false;
+ struct render_page *y_slice;
+ int space;
+
+ while (!render_break_has_next (&ts->y_break))
+ {
+ struct render_page *x_slice;
+
+ render_break_destroy (&ts->y_break);
+ if (!render_break_has_next (&ts->x_break))
+ return false;
+
+ x_slice = render_break_next (&ts->x_break, xr->width);
+ render_break_init (&ts->y_break, x_slice, V);
+ }
+
+ space = xr->length - xr->y;
+ if (render_break_next_size (&ts->y_break) > space)
+ {
+ assert (xr->y > 0);
+ return true;
+ }
+
+ y_slice = render_break_next (&ts->y_break, space);
+ if (ts->caption_height)
+ {
+ if (xr->cairo)
+ xr_draw_title (xr, table_item_get_caption (ts->table_item),
+ xr->width, ts->caption_height);
+
+ xr->y += ts->caption_height;
+ ts->caption_height = 0;
+ }
+
+ if (xr->cairo)
+ render_page_draw (y_slice);
+ xr->y += render_page_get_size (y_slice, V);
+ render_page_unref (y_slice);
}
- pango_font_description_set_absolute_size (font->desc, this->font_height);
+}
+
+static void
+xr_table_destroy (struct xr_render_fsm *fsm)
+{
+ struct xr_table_state *ts = UP_CAST (fsm, struct xr_table_state, fsm);
- font->layout = pango_cairo_create_layout (x->cairo);
- pango_layout_set_font_description (font->layout, font->desc);
+ table_item_unref (ts->table_item);
+ render_break_destroy (&ts->x_break);
+ render_break_destroy (&ts->y_break);
+ free (ts);
+}
- language = pango_language_get_default ();
- context = pango_layout_get_context (font->layout);
- font->metrics = pango_context_get_metrics (context, font->desc, language);
+static struct xr_render_fsm *
+xr_render_table (struct xr_driver *xr, const struct table_item *table_item)
+{
+ struct xr_table_state *ts;
+ struct render_page *page;
+ int caption_width;
- return true;
+ ts = xmalloc (sizeof *ts);
+ ts->fsm.render = xr_table_render;
+ ts->fsm.destroy = xr_table_destroy;
+ ts->table_item = table_item_ref (table_item);
+
+ if (xr->y > 0)
+ xr->y += xr->char_height;
+
+ page = xr_render_table_item (xr, table_item,
+ &caption_width, &ts->caption_height);
+ xr->params->size[V] = xr->length - ts->caption_height;
+
+ render_break_init (&ts->x_break, page, H);
+ render_break_init_empty (&ts->y_break);
+
+ return &ts->fsm;
+}
+\f
+struct xr_chart_state
+ {
+ struct xr_render_fsm fsm;
+ struct chart_item *chart_item;
+ };
+
+static bool
+xr_chart_render (struct xr_render_fsm *fsm, struct xr_driver *xr)
+{
+ struct xr_chart_state *cs = UP_CAST (fsm, struct xr_chart_state, fsm);
+
+ if (xr->y > 0)
+ return true;
+
+ if (xr->cairo != NULL)
+ xr_draw_chart (cs->chart_item, xr->cairo, 0.0, 0.0,
+ xr_to_pt (xr->width), xr_to_pt (xr->length));
+ xr->y = xr->length;
+
+ return false;
}
-/* Frees FONT. */
static void
-free_font (struct xr_font *font)
+xr_chart_destroy (struct xr_render_fsm *fsm)
{
- free (font->string);
- if (font->desc != NULL)
- pango_font_description_free (font->desc);
- pango_font_metrics_unref (font->metrics);
- g_object_unref (font->layout);
+ struct xr_chart_state *cs = UP_CAST (fsm, struct xr_chart_state, fsm);
+
+ chart_item_unref (cs->chart_item);
+ free (cs);
}
-/* Cairo driver class. */
-const struct outp_class cairo_class =
+static struct xr_render_fsm *
+xr_render_chart (const struct chart_item *chart_item)
{
- "cairo",
- 0,
+ struct xr_chart_state *cs;
+
+ cs = xmalloc (sizeof *cs);
+ cs->fsm.render = xr_chart_render;
+ cs->fsm.destroy = xr_chart_destroy;
+ cs->chart_item = chart_item_ref (chart_item);
+
+ return &cs->fsm;
+}
+\f
+static bool
+xr_eject_render (struct xr_render_fsm *fsm UNUSED, struct xr_driver *xr)
+{
+ return xr->y > 0;
+}
+
+static void
+xr_eject_destroy (struct xr_render_fsm *fsm UNUSED)
+{
+ /* Nothing to do. */
+}
+
+static struct xr_render_fsm *
+xr_render_eject (void)
+{
+ static struct xr_render_fsm eject_renderer =
+ {
+ xr_eject_render,
+ xr_eject_destroy
+ };
- xr_open_driver,
- xr_close_driver,
+ return &eject_renderer;
+}
+\f
+static struct xr_render_fsm *
+xr_create_text_renderer (struct xr_driver *xr, const char *text)
+{
+ struct table_item *table_item;
+ struct xr_render_fsm *fsm;
- xr_open_page,
- xr_close_page,
- NULL,
+ table_item = table_item_create (table_from_string (TAB_LEFT, text), NULL);
+ fsm = xr_render_table (xr, table_item);
+ table_item_unref (table_item);
+
+ return fsm;
+}
- xr_output_chart,
+static struct xr_render_fsm *
+xr_render_text (struct xr_driver *xr, const struct text_item *text_item)
+{
+ enum text_item_type type = text_item_get_type (text_item);
+ const char *text = text_item_get_text (text_item);
- NULL,
+ switch (type)
+ {
+ case TEXT_ITEM_TITLE:
+ free (xr->title);
+ xr->title = xstrdup (text);
+ break;
- xr_line,
- xr_text_metrics,
- xr_text_draw,
-};
+ case TEXT_ITEM_SUBTITLE:
+ free (xr->subtitle);
+ xr->subtitle = xstrdup (text);
+ break;
+
+ case TEXT_ITEM_COMMAND_CLOSE:
+ break;
+
+ case TEXT_ITEM_BLANK_LINE:
+ if (xr->y > 0)
+ xr->y += xr->char_height;
+ break;
+
+ case TEXT_ITEM_EJECT_PAGE:
+ if (xr->y > 0)
+ return xr_render_eject ();
+ break;
+
+ default:
+ return xr_create_text_renderer (xr, text);
+ }
+
+ return NULL;
+}
+
+static struct xr_render_fsm *
+xr_render_message (struct xr_driver *xr,
+ const struct message_item *message_item)
+{
+ const struct msg *msg = message_item_get_msg (message_item);
+ struct xr_render_fsm *fsm;
+ char *s;
+
+ s = msg_to_string (msg, xr->command_name);
+ fsm = xr_create_text_renderer (xr, s);
+ free (s);
+
+ return fsm;
+}
+
+static struct xr_render_fsm *
+xr_render_output_item (struct xr_driver *xr,
+ const struct output_item *output_item)
+{
+ if (is_table_item (output_item))
+ return xr_render_table (xr, to_table_item (output_item));
+ else if (is_chart_item (output_item))
+ return xr_render_chart (to_chart_item (output_item));
+ else if (is_text_item (output_item))
+ return xr_render_text (xr, to_text_item (output_item));
+ else if (is_message_item (output_item))
+ return xr_render_message (xr, to_message_item (output_item));
+ else
+ return NULL;
+}
projects / pspp-builds.git / blobdiff