#include <config.h>
-#include "output/cairo.h"
-
#include "libpspp/assertion.h"
#include "libpspp/cast.h"
-#include "libpspp/hash-functions.h"
#include "libpspp/message.h"
-#include "libpspp/pool.h"
-#include "libpspp/start-date.h"
#include "libpspp/str.h"
#include "libpspp/string-map.h"
-#include "libpspp/version.h"
#include "data/file-handle-def.h"
-#include "output/cairo-chart.h"
#include "output/cairo-fsm.h"
-#include "output/chart-item-provider.h"
+#include "output/cairo-pager.h"
#include "output/driver-provider.h"
-#include "output/group-item.h"
-#include "output/message-item.h"
#include "output/options.h"
-#include "output/page-eject-item.h"
-#include "output/page-setup-item.h"
-#include "output/render.h"
-#include "output/table-item.h"
+#include "output/output-item.h"
#include "output/table.h"
-#include "output/text-item.h"
#include <cairo/cairo-pdf.h>
#include <cairo/cairo-ps.h>
#include <inttypes.h>
#include <math.h>
#include <pango/pango-font.h>
-#include <pango/pango-layout.h>
-#include <pango/pango.h>
-#include <pango/pangocairo.h>
#include <stdlib.h>
-#include "gl/c-ctype.h"
#include "gl/c-strcase.h"
-#include "gl/intprops.h"
-#include "gl/minmax.h"
#include "gl/xalloc.h"
#include "gettext.h"
return x / (double) XR_POINT;
}
-/* Dimensions for drawing lines in tables. */
-#define XR_LINE_WIDTH (XR_POINT / 2) /* Width of an ordinary line. */
-#define XR_LINE_SPACE XR_POINT /* Space between double lines. */
-
/* Output types. */
enum xr_output_type
{
XR_PDF,
XR_PS,
- XR_SVG
+ XR_SVG,
+ XR_PNG
};
/* Cairo output driver. */
{
struct output_driver driver;
- /* User parameters. */
- PangoFontDescription *fonts[XR_N_FONTS];
-
- /* Measurements all in inch/(72 * XR_POINT). */
- int size[TABLE_N_AXES]; /* Page size with margins subtracted. */
- int margins[TABLE_N_AXES][2]; /* Margins. */
- int min_break[TABLE_N_AXES]; /* Min cell size to break across pages. */
- int object_spacing; /* Space between output objects. */
-
- struct cell_color bg; /* Background color */
- struct cell_color fg; /* Foreground color */
- bool transparent; /* true -> do not render background */
- bool systemcolors; /* true -> do not change colors */
-
- int initial_page_number;
-
- struct page_heading headings[2]; /* Top and bottom headings. */
- int headings_height[2];
-
- /* Internal state. */
- struct xr_fsm_style *style;
- int char_width, char_height;
- cairo_t *cairo;
- cairo_surface_t *surface;
- int page_number; /* Current page number. */
- int y;
- struct xr_fsm *fsm;
+ enum xr_output_type output_type;
+ struct xr_fsm_style *fsm_style;
+ struct xr_page_style *page_style;
+ struct xr_pager *pager;
+ bool trim;
+
+ /* This is the surface where we're currently drawing. It is always
+ nonnull.
+
+ If 'trim' is true, this is a special Cairo "recording surface" that we
+ are using to save output temporarily just to find out the bounding box,
+ then later replay it into the destination surface.
+
+ If 'trim' is false:
+
+ - For output to a PDF or PostScript file, it is the same pointer as
+ 'dest_surface'.
+
+ - For output to a PNG file, it is an image surface.
+
+ - For output to an SVG file, it is a recording surface.
+ */
+ cairo_surface_t *drawing_surface;
+
+ /* - For output to a PDF or PostScript file, this is the surface for the
+ PDF or PostScript file where the output is ultimately going.
+
+ - For output to a PNG file, this is NULL, because Cairo has very
+ limited support for PNG. Cairo can't open a PNG file for writing as
+ a surface, it can only save an existing surface to a PNG file.
+
+ - For output to a SVG file, this is NULL, because Cairo does not
+ permit resizing the SVG page size after creating the file, whereas
+ this driver needs to do that sometimes. Also, SVG is not multi-page
+ (according to https://wiki.inkscape.org/wiki/index.php/Multipage).
+ */
+ cairo_surface_t *dest_surface;
+
+ /* Used only in file names, for PNG and SVG output where we can only write
+ one page per file. */
+ int page_number;
};
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 *);
\f
/* Output driver basics. */
return desc;
}
-static void
-apply_options (struct xr_driver *xr, struct string_map *o)
+static struct xr_driver *
+xr_allocate (const char *name, int device_type,
+ enum xr_output_type output_type, struct string_map *o)
{
+ struct xr_driver *xr = xzalloc (sizeof *xr);
struct output_driver *d = &xr->driver;
- /* In inch/72000 units used by parse_paper_size() and parse_dimension(). */
+ output_driver_init (d, &cairo_driver_class, name, device_type);
+ xr->output_type = output_type;
/* Scale factor from inch/72000 to inch/(72 * XR_POINT). */
const double scale = XR_POINT / 1000.;
- for (int i = 0; i < XR_N_FONTS; i++)
- if (xr->fonts[i] != NULL)
- pango_font_description_free (xr->fonts[i]);
-
- int font_size = parse_int (opt (d, o, "font-size", "10000"), 1000, 1000000);
- xr->fonts[XR_FONT_FIXED] = parse_font_option
- (d, o, "fixed-font", "monospace", font_size, false, false);
- xr->fonts[XR_FONT_PROPORTIONAL] = parse_font_option (
- d, o, "prop-font", "sans serif", font_size, false, false);
-
- xr->fg = parse_color (opt (d, o, "foreground-color", "#000000000000"));
- xr->bg = parse_color (opt (d, o, "background-color", "#FFFFFFFFFFFF"));
-
- xr->transparent = parse_boolean (opt (d, o, "transparent", "false"));
- xr->systemcolors = parse_boolean (opt (d, o, "systemcolors", "false"));
-
- /* Get dimensions. */
int paper[TABLE_N_AXES];
parse_paper_size (opt (d, o, "paper-size", ""), &paper[H], &paper[V]);
+ for (int a = 0; a < TABLE_N_AXES; a++)
+ paper[a] *= scale;
int margins[TABLE_N_AXES][2];
- margins[H][0] = parse_dimension (opt (d, o, "left-margin", ".5in"));
- margins[H][1] = parse_dimension (opt (d, o, "right-margin", ".5in"));
- margins[V][0] = parse_dimension (opt (d, o, "top-margin", ".5in"));
- margins[V][1] = parse_dimension (opt (d, o, "bottom-margin", ".5in"));
+ margins[H][0] = parse_dimension (opt (d, o, "left-margin", ".5in")) * scale;
+ margins[H][1] = parse_dimension (opt (d, o, "right-margin", ".5in")) * scale;
+ margins[V][0] = parse_dimension (opt (d, o, "top-margin", ".5in")) * scale;
+ margins[V][1] = parse_dimension (opt (d, o, "bottom-margin", ".5in")) * scale;
+
+ int size[TABLE_N_AXES];
+ for (int a = 0; a < TABLE_N_AXES; a++)
+ size[a] = paper[a] - margins[a][0] - margins[a][1];
int min_break[TABLE_N_AXES];
min_break[H] = parse_dimension (opt (d, o, "min-hbreak", NULL)) * scale;
min_break[V] = parse_dimension (opt (d, o, "min-vbreak", NULL)) * scale;
-
- int object_spacing = (parse_dimension (opt (d, o, "object-spacing", NULL))
- * scale);
-
- /* Convert to inch/(XR_POINT * 72). */
for (int a = 0; a < TABLE_N_AXES; a++)
- {
- for (int i = 0; i < 2; i++)
- xr->margins[a][i] = margins[a][i] * scale;
- xr->size[a] = (paper[a] - margins[a][0] - margins[a][1]) * scale;
- xr->min_break[a] = min_break[a] >= 0 ? min_break[a] : xr->size[a] / 2;
- }
- xr->object_spacing = object_spacing >= 0 ? object_spacing : XR_POINT * 12;
-
- /* There are no headings so headings_height can stay 0. */
-}
-
-static struct xr_driver *
-xr_allocate (const char *name, int device_type, struct string_map *o)
-{
- struct xr_driver *xr = xzalloc (sizeof *xr);
- struct output_driver *d = &xr->driver;
-
- output_driver_init (d, &cairo_driver_class, name, device_type);
-
- apply_options (xr, o);
-
- return xr;
-}
-
-static int
-pango_to_xr (int pango)
-{
- return (XR_POINT != PANGO_SCALE
- ? ceil (pango * (1. * XR_POINT / PANGO_SCALE))
- : pango);
-}
-
-static int
-xr_to_pango (int xr)
-{
- return (XR_POINT != PANGO_SCALE
- ? ceil (xr * (1. / XR_POINT * PANGO_SCALE))
- : xr);
-}
+ if (min_break[a] <= 0)
+ min_break[a] = size[a] / 2;
-static void
-xr_measure_fonts (cairo_t *cairo, PangoFontDescription *fonts[XR_N_FONTS],
- int *char_width, int *char_height)
-{
- *char_width = 0;
- *char_height = 0;
- for (int i = 0; i < XR_N_FONTS; i++)
- {
- PangoContext *context = pango_cairo_create_context (cairo);
- pango_cairo_context_set_resolution (context, 72.0);
- PangoLayout *layout = pango_layout_new (context);
- g_object_unref (context);
- pango_layout_set_font_description (layout, fonts[i]);
-
- pango_layout_set_text (layout, "0", 1);
-
- int cw, ch;
- pango_layout_get_size (layout, &cw, &ch);
- *char_width = MAX (*char_width, pango_to_xr (cw));
- *char_height = MAX (*char_height, pango_to_xr (ch));
-
- g_object_unref (G_OBJECT (layout));
- }
-}
-
-static int
-get_layout_height (PangoLayout *layout)
-{
- int w, h;
- pango_layout_get_size (layout, &w, &h);
- return h;
-}
-
-static int
-xr_render_page_heading (cairo_t *cairo, const PangoFontDescription *font,
- const struct page_heading *ph, int page_number,
- int width, bool draw, int base_y)
-{
- PangoContext *context = pango_cairo_create_context (cairo);
- pango_cairo_context_set_resolution (context, 72.0);
- PangoLayout *layout = pango_layout_new (context);
- g_object_unref (context);
-
- pango_layout_set_font_description (layout, font);
-
- int y = 0;
- for (size_t i = 0; i < ph->n; i++)
- {
- const struct page_paragraph *pp = &ph->paragraphs[i];
-
- char *markup = output_driver_substitute_heading_vars (pp->markup,
- page_number);
- pango_layout_set_markup (layout, markup, -1);
- free (markup);
-
- pango_layout_set_alignment (
- layout,
- (pp->halign == TABLE_HALIGN_LEFT ? PANGO_ALIGN_LEFT
- : pp->halign == TABLE_HALIGN_CENTER ? PANGO_ALIGN_CENTER
- : pp->halign == TABLE_HALIGN_MIXED ? PANGO_ALIGN_LEFT
- : PANGO_ALIGN_RIGHT));
- pango_layout_set_width (layout, xr_to_pango (width));
- if (draw)
- {
- cairo_save (cairo);
- cairo_translate (cairo, 0, xr_to_pt (y + base_y));
- pango_cairo_show_layout (cairo, layout);
- cairo_restore (cairo);
- }
-
- y += pango_to_xr (get_layout_height (layout));
- }
+ int font_size = parse_int (opt (d, o, "font-size", "10000"), 1000, 1000000);
+ PangoFontDescription *font = parse_font_option (
+ d, o, "prop-font", "Sans Serif", font_size, false, false);
- g_object_unref (G_OBJECT (layout));
+ struct cell_color fg = parse_color (opt (d, o, "foreground-color", "black"));
- return y;
-}
+ bool systemcolors = parse_boolean (opt (d, o, "systemcolors", "false"));
-static int
-xr_measure_headings (cairo_surface_t *surface,
- const PangoFontDescription *font,
- const struct page_heading headings[2],
- int width, int object_spacing, int height[2])
-{
- cairo_t *cairo = cairo_create (surface);
- int total = 0;
- for (int i = 0; i < 2; i++)
- {
- int h = xr_render_page_heading (cairo, font, &headings[i], -1,
- width, false, 0);
+ int object_spacing
+ = parse_dimension (opt (d, o, "object-spacing", NULL)) * scale;
+ if (object_spacing <= 0)
+ object_spacing = XR_POINT * 12;
- /* If the top heading is nonempty, add some space below it. */
- if (h && i == 0)
- h += object_spacing;
+ const char *default_resolution = (output_type == XR_PNG ? "96" : "72");
+ int font_resolution = parse_int (opt (d, o, "font-resolution",
+ default_resolution), 10, 1000);
- if (height)
- height[i] = h;
- total += h;
- }
- cairo_destroy (cairo);
- return total;
-}
+ xr->trim = parse_boolean (opt (d, o, "trim", "false"));
-static bool
-xr_check_fonts (cairo_surface_t *surface,
- PangoFontDescription *fonts[XR_N_FONTS],
- int usable_width, int usable_length)
-{
- cairo_t *cairo = cairo_create (surface);
- int char_width, char_height;
- xr_measure_fonts (cairo, fonts, &char_width, &char_height);
- cairo_destroy (cairo);
-
- bool ok = true;
- enum { MIN_WIDTH = 3, MIN_LENGTH = 3 };
- if (usable_width / char_width < MIN_WIDTH)
- {
- msg (ME, _("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, usable_width / char_width);
- ok = false;
- }
- if (usable_length / char_height < MIN_LENGTH)
- {
- msg (ME, _("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, usable_length / char_height);
- ok = false;
- }
- return ok;
-}
+ /* Cairo 1.16.0 has a bug that causes crashes if outlines are enabled at the
+ same time as trimming:
+ https://lists.cairographics.org/archives/cairo/2020-December/029151.html
+ For now, just disable the outline if trimming is enabled. */
+ bool include_outline
+ = (output_type == XR_PDF
+ && parse_boolean (opt (d, o, "outline", xr->trim ? "false" : "true")));
-static void
-xr_set_cairo (struct xr_driver *xr, cairo_t *cairo)
-{
- xr->cairo = cairo;
+ xr->page_style = xmalloc (sizeof *xr->page_style);
+ *xr->page_style = (struct xr_page_style) {
+ .ref_cnt = 1,
- cairo_set_line_width (xr->cairo, xr_to_pt (XR_LINE_WIDTH));
+ .margins = {
+ [H] = { margins[H][0], margins[H][1], },
+ [V] = { margins[V][0], margins[V][1], },
+ },
- xr_measure_fonts (xr->cairo, xr->fonts, &xr->char_width, &xr->char_height);
+ .initial_page_number = 1,
+ .include_outline = include_outline,
+ };
- if (xr->style == NULL)
- {
- xr->style = xmalloc (sizeof *xr->style);
- *xr->style = (struct xr_fsm_style) {
- .ref_cnt = 1,
- .size = { [H] = xr->size[H], [V] = xr->size[V] },
- .min_break = { [H] = xr->min_break[H], [V] = xr->min_break[V] },
- .use_system_colors = xr->systemcolors,
- .transparent = xr->transparent,
- .font_resolution = 72.0,
- };
-
- for (size_t i = 0; i < XR_N_FONTS; i++)
- xr->style->fonts[i] = pango_font_description_copy (xr->fonts[i]);
- }
+ xr->fsm_style = xmalloc (sizeof *xr->fsm_style);
+ *xr->fsm_style = (struct xr_fsm_style) {
+ .ref_cnt = 1,
+ .size = { [H] = size[H], [V] = size[V] },
+ .min_break = { [H] = min_break[H], [V] = min_break[V] },
+ .font = font,
+ .fg = fg,
+ .use_system_colors = systemcolors,
+ .object_spacing = object_spacing,
+ .font_resolution = font_resolution,
+ };
- if (!xr->systemcolors)
- cairo_set_source_rgb (xr->cairo,
- xr->fg.r / 255.0, xr->fg.g / 255.0, xr->fg.b / 255.0);
+ return xr;
}
static struct output_driver *
xr_create (struct file_handle *fh, enum settings_output_devices device_type,
- struct string_map *o, enum xr_output_type file_type)
+ struct string_map *o, enum xr_output_type output_type)
{
const char *file_name = fh_get_file_name (fh);
- struct xr_driver *xr = xr_allocate (file_name, device_type, o);
+ struct xr_driver *xr = xr_allocate (file_name, device_type, output_type, o);
- double paper_pt[TABLE_N_AXES];
+ double paper[TABLE_N_AXES];
for (int a = 0; a < TABLE_N_AXES; a++)
- paper_pt[a] = xr_to_pt (xr->size[a]
- + xr->margins[a][0] + xr->margins[a][1]);
- if (file_type == XR_PDF)
- xr->surface = cairo_pdf_surface_create (file_name,
- paper_pt[H], paper_pt[V]);
- else if (file_type == XR_PS)
- xr->surface = cairo_ps_surface_create (file_name, paper_pt[H], paper_pt[V]);
- else if (file_type == XR_SVG)
- xr->surface = cairo_svg_surface_create (file_name,
- paper_pt[H], paper_pt[V]);
- else
- NOT_REACHED ();
-
- cairo_status_t status = cairo_surface_status (xr->surface);
- if (status != CAIRO_STATUS_SUCCESS)
+ paper[a] = xr_to_pt (xr_page_style_paper_size (xr->page_style,
+ xr->fsm_style, a));
+
+ xr->dest_surface
+ = (output_type == XR_PDF
+ ? cairo_pdf_surface_create (file_name, paper[H], paper[V])
+ : output_type == XR_PS
+ ? cairo_ps_surface_create (file_name, paper[H], paper[V])
+ : NULL);
+ if (xr->dest_surface)
{
- msg (ME, _("error opening output file `%s': %s"),
- file_name, cairo_status_to_string (status));
- goto error;
+ cairo_status_t status = cairo_surface_status (xr->dest_surface);
+ if (status != CAIRO_STATUS_SUCCESS)
+ {
+ msg (ME, _("error opening output file `%s': %s"),
+ file_name, cairo_status_to_string (status));
+ goto error;
+ }
}
- if (!xr_check_fonts (xr->surface, xr->fonts, xr->size[H], xr->size[V]))
- goto error;
+ xr->drawing_surface
+ = (xr->trim || output_type == XR_SVG
+ ? cairo_recording_surface_create (CAIRO_CONTENT_COLOR_ALPHA,
+ &(cairo_rectangle_t) {
+ .width = paper[H],
+ .height = paper[V] })
+ : output_type == XR_PNG
+ ? cairo_image_surface_create (CAIRO_FORMAT_ARGB32, paper[H], paper[V])
+ : xr->dest_surface);
fh_unref (fh);
return &xr->driver;
return xr_create (fh, device_type, o, XR_SVG);
}
-static void
-xr_destroy (struct output_driver *driver)
+static struct output_driver *
+xr_png_create (struct file_handle *fh, enum settings_output_devices device_type,
+ struct string_map *o)
{
- struct xr_driver *xr = xr_driver_cast (driver);
- size_t i;
-
- xr_driver_destroy_fsm (xr);
+ return xr_create (fh, device_type, o, XR_PNG);
+}
- if (xr->cairo != NULL)
+static void
+xr_set_surface_size (cairo_surface_t *surface, enum xr_output_type output_type,
+ double width, double height)
+{
+ switch (output_type)
{
- cairo_surface_finish (xr->surface);
- cairo_status_t status = cairo_status (xr->cairo);
- if (status != CAIRO_STATUS_SUCCESS)
- fprintf (stderr, _("error drawing output for %s driver: %s"),
- output_driver_get_name (driver),
- cairo_status_to_string (status));
- cairo_surface_destroy (xr->surface);
+ case XR_PDF:
+ cairo_pdf_surface_set_size (surface, width, height);
+ break;
- cairo_destroy (xr->cairo);
+ case XR_PS:
+ cairo_ps_surface_set_size (surface, width, height);
+ break;
+
+ case XR_SVG:
+ case XR_PNG:
+ NOT_REACHED ();
}
+}
- for (i = 0; i < XR_N_FONTS; i++)
- if (xr->fonts[i] != NULL)
- pango_font_description_free (xr->fonts[i]);
+static void
+xr_copy_surface (cairo_surface_t *dst, cairo_surface_t *src,
+ double x, double y)
+{
+ cairo_t *cr = cairo_create (dst);
+ cairo_set_source_surface (cr, src, x, y);
+ cairo_paint (cr);
+ cairo_destroy (cr);
+}
- xr_fsm_style_unref (xr->style);
- free (xr);
+static void
+clear_rectangle (cairo_surface_t *surface,
+ double x0, double y0, double x1, double y1)
+{
+ cairo_t *cr = cairo_create (surface);
+ cairo_set_source_rgb (cr, 1, 1, 1);
+ cairo_new_path (cr);
+ cairo_rectangle (cr, x0, y0, x1 - x0, y1 - y0);
+ cairo_fill (cr);
+ cairo_destroy (cr);
}
static void
-xr_flush (struct output_driver *driver)
+xr_report_error (cairo_status_t status, const char *file_name)
{
- struct xr_driver *xr = xr_driver_cast (driver);
-
- cairo_surface_flush (cairo_get_target (xr->cairo));
+ if (status != CAIRO_STATUS_SUCCESS)
+ fprintf (stderr, "%s: %s\n", file_name, cairo_status_to_string (status));
}
static void
-xr_update_page_setup (struct output_driver *driver,
- const struct page_setup *ps)
+xr_finish_page (struct xr_driver *xr)
{
- struct xr_driver *xr = xr_driver_cast (driver);
+ xr_pager_finish_page (xr->pager);
- xr->initial_page_number = ps->initial_page_number;
- xr->object_spacing = ps->object_spacing * 72 * XR_POINT;
+ /* For 'trim' true:
- if (xr->cairo)
- return;
+ - If the destination is PDF or PostScript, set the dest surface size, copy
+ ink extent, show_page.
- int size[TABLE_N_AXES];
- for (int a = 0; a < TABLE_N_AXES; a++)
- {
- double total_margin = ps->margins[a][0] + ps->margins[a][1];
- size[a] = (ps->paper[a] - total_margin) * 72 * XR_POINT;
- }
+ - If the destination is PNG, create image surface, copy ink extent,
+ cairo_surface_write_to_png(), destroy image surface.
- int headings_height[2];
- size[V] -= xr_measure_headings (
- xr->surface, xr->fonts[XR_FONT_PROPORTIONAL], ps->headings,
- size[H], xr->object_spacing, headings_height);
+ - If the destination is SVG, create svg surface, copy ink extent, close.
- int swap = ps->orientation == PAGE_LANDSCAPE;
- enum table_axis h = H ^ swap;
- enum table_axis v = V ^ swap;
- if (!xr_check_fonts (xr->surface, xr->fonts, size[h], size[v]))
- return;
+ then destroy drawing_surface and make a new one.
- for (int i = 0; i < 2; i++)
- {
- page_heading_uninit (&xr->headings[i]);
- page_heading_copy (&xr->headings[i], &ps->headings[i]);
- xr->headings_height[i] = headings_height[i];
- }
+ For 'trim' false:
+
+ - If the destination is PDF or PostScript, show_page.
+ - If the destination is PNG, cairo_surface_write_to_png(), destroy image
+ surface, create new image surface.
+
+ - If the destination is SVG, create svg surface, copy whole thing, close.
+
+ */
+ double paper[TABLE_N_AXES];
for (int a = 0; a < TABLE_N_AXES; a++)
+ paper[a] = xr_to_pt (xr_page_style_paper_size (
+ xr->page_style, xr->fsm_style, a));
+
+ xr->page_number++;
+ char *file_name = (xr->page_number > 1
+ ? xasprintf ("%s-%d", xr->driver.name, xr->page_number)
+ : xr->driver.name);
+
+ if (xr->trim)
+ {
+ /* Get the bounding box for the drawing surface. */
+ double ofs[TABLE_N_AXES], size[TABLE_N_AXES];
+ cairo_recording_surface_ink_extents (xr->drawing_surface,
+ &ofs[H], &ofs[V],
+ &size[H], &size[V]);
+ const int (*margins)[2] = xr->page_style->margins;
+ for (int a = 0; a < TABLE_N_AXES; a++)
+ {
+ double scale = XR_POINT;
+ size[a] += (margins[a][0] + margins[a][1]) / scale;
+ ofs[a] = -ofs[a] + margins[a][0] / scale;
+ }
+
+ switch (xr->output_type)
+ {
+ case XR_PDF:
+ case XR_PS:
+ xr_set_surface_size (xr->dest_surface, xr->output_type,
+ size[H], size[V]);
+ xr_copy_surface (xr->dest_surface, xr->drawing_surface,
+ ofs[H], ofs[V]);
+ cairo_surface_show_page (xr->dest_surface);
+ break;
+
+ case XR_SVG:
+ {
+ cairo_surface_t *svg = cairo_svg_surface_create (
+ file_name, size[H], size[V]);
+ xr_copy_surface (svg, xr->drawing_surface, ofs[H], ofs[V]);
+ xr_report_error (cairo_surface_status (svg), file_name);
+ cairo_surface_destroy (svg);
+ }
+ break;
+
+ case XR_PNG:
+ {
+ cairo_surface_t *png = cairo_image_surface_create (
+ CAIRO_FORMAT_ARGB32, size[H], size[V]);
+ clear_rectangle (png, 0, 0, size[H], size[V]);
+ xr_copy_surface (png, xr->drawing_surface, ofs[H], ofs[V]);
+ xr_report_error (cairo_surface_write_to_png (png, file_name),
+ file_name);
+ cairo_surface_destroy (png);
+ }
+ break;
+ }
+
+ /* Destroy the recording surface and create a fresh one of the same
+ size. */
+ cairo_surface_destroy (xr->drawing_surface);
+ xr->drawing_surface = cairo_recording_surface_create (
+ CAIRO_CONTENT_COLOR_ALPHA,
+ &(cairo_rectangle_t) { .width = paper[H], .height = paper[V] });
+ }
+ else
{
- xr->size[a] = size[a ^ swap];
- for (int i = 0; i < 2; i++)
- xr->margins[a][i] = ps->margins[a ^ swap][i] * 72 * XR_POINT;
+ switch (xr->output_type)
+ {
+ case XR_PDF:
+ case XR_PS:
+ cairo_surface_show_page (xr->dest_surface);
+ break;
+
+ case XR_SVG:
+ {
+ cairo_surface_t *svg = cairo_svg_surface_create (
+ file_name, paper[H], paper[V]);
+ xr_copy_surface (svg, xr->drawing_surface, 0.0, 0.0);
+ xr_report_error (cairo_surface_status (svg), file_name);
+ cairo_surface_destroy (svg);
+ }
+ break;
+
+ case XR_PNG:
+ xr_report_error (cairo_surface_write_to_png (xr->drawing_surface,
+ file_name), file_name);
+ cairo_surface_destroy (xr->drawing_surface);
+ xr->drawing_surface = cairo_image_surface_create (
+ CAIRO_FORMAT_ARGB32, paper[H], paper[V]);
+ break;
+ }
}
- cairo_pdf_surface_set_size (xr->surface,
- ps->paper[h] * 72.0, ps->paper[v] * 72.0);
+
+ if (file_name != xr->driver.name)
+ free (file_name);
}
static void
-xr_submit (struct output_driver *driver, const struct output_item *output_item)
+xr_destroy (struct output_driver *driver)
{
struct xr_driver *xr = xr_driver_cast (driver);
- if (is_page_setup_item (output_item))
- {
- xr_update_page_setup (driver,
- to_page_setup_item (output_item)->page_setup);
- return;
- }
+ if (xr->pager)
+ xr_finish_page (xr);
- if (!xr->cairo)
- {
- xr->page_number = xr->initial_page_number - 1;
- xr_set_cairo (xr, cairo_create (xr->surface));
- cairo_save (xr->cairo);
- xr_driver_next_page (xr, xr->cairo);
- }
+ xr_pager_destroy (xr->pager);
- xr_driver_output_item (xr, output_item);
- while (xr_driver_need_new_page (xr))
+ if (xr->drawing_surface && xr->drawing_surface != xr->dest_surface)
+ cairo_surface_destroy (xr->drawing_surface);
+ if (xr->dest_surface)
{
- cairo_restore (xr->cairo);
- cairo_show_page (xr->cairo);
- cairo_save (xr->cairo);
- xr_driver_next_page (xr, xr->cairo);
+ cairo_surface_finish (xr->dest_surface);
+ cairo_status_t status = cairo_surface_status (xr->dest_surface);
+ if (status != CAIRO_STATUS_SUCCESS)
+ fprintf (stderr, _("error drawing output for %s driver: %s\n"),
+ output_driver_get_name (driver),
+ cairo_status_to_string (status));
+ cairo_surface_destroy (xr->dest_surface);
}
-}
-\f
-/* Functions for rendering a series of output items to a series of Cairo
- contexts, with pagination.
- Used by PSPPIRE for printing, and by the basic Cairo output driver above as
- its underlying implementation.
-
- See the big comment in cairo.h for intended usage. */
+ xr_page_style_unref (xr->page_style);
+ xr_fsm_style_unref (xr->fsm_style);
+ free (xr);
+}
-/* Gives new page CAIRO to XR for output. */
-void
-xr_driver_next_page (struct xr_driver *xr, cairo_t *cairo)
+static void
+xr_update_page_setup (struct output_driver *driver,
+ const struct page_setup *setup)
{
- if (!xr->transparent)
- {
- cairo_save (cairo);
- cairo_set_source_rgb (cairo,
- xr->bg.r / 255.0, xr->bg.g / 255.0, xr->bg.b / 255.0);
- cairo_rectangle (cairo, 0, 0, xr->size[H], xr->size[V]);
- cairo_fill (cairo);
- cairo_restore (cairo);
- }
- cairo_translate (cairo,
- xr_to_pt (xr->margins[H][0]),
- xr_to_pt (xr->margins[V][0] + xr->headings_height[0]));
+ struct xr_driver *xr = xr_driver_cast (driver);
- xr->page_number++;
- xr->cairo = cairo;
- xr->y = 0;
+ const double scale = 72 * XR_POINT;
- xr_render_page_heading (xr->cairo, xr->fonts[XR_FONT_PROPORTIONAL],
- &xr->headings[0], xr->page_number, xr->size[H], true,
- -xr->headings_height[0]);
- xr_render_page_heading (xr->cairo, xr->fonts[XR_FONT_PROPORTIONAL],
- &xr->headings[1], xr->page_number, xr->size[H], true,
- xr->size[V]);
+ int swap = setup->orientation == PAGE_LANDSCAPE;
+ enum table_axis h = H ^ swap;
+ enum table_axis v = V ^ swap;
- xr_driver_run_fsm (xr);
-}
+ struct xr_page_style *old_ps = xr->page_style;
+ xr->page_style = xmalloc (sizeof *xr->page_style);
+ *xr->page_style = (struct xr_page_style) {
+ .ref_cnt = 1,
-/* 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)
-{
- assert (xr->fsm == NULL);
- xr->fsm = xr_fsm_create (output_item, xr->style, xr->cairo);
- xr_driver_run_fsm (xr);
-}
+ .margins = {
+ [H] = { setup->margins[h][0] * scale, setup->margins[h][1] * scale },
+ [V] = { setup->margins[v][0] * scale, setup->margins[v][1] * scale },
+ },
-/* 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)
-{
- return xr->fsm != NULL;
-}
+ .initial_page_number = setup->initial_page_number,
+ .include_outline = old_ps->include_outline,
+ };
+ for (size_t i = 0; i < 2; i++)
+ page_heading_copy (&xr->page_style->headings[i], &setup->headings[i]);
+ xr_page_style_unref (old_ps);
+
+ struct xr_fsm_style *old_fs = xr->fsm_style;
+ xr->fsm_style = xmalloc (sizeof *xr->fsm_style);
+ *xr->fsm_style = (struct xr_fsm_style) {
+ .ref_cnt = 1,
+ .size = { [H] = setup->paper[H] * scale, [V] = setup->paper[V] * scale },
+ .min_break = {
+ [H] = setup->paper[H] * scale / 2,
+ [V] = setup->paper[V] * scale / 2,
+ },
+ .font = pango_font_description_copy (old_fs->font),
+ .fg = old_fs->fg,
+ .use_system_colors = old_fs->use_system_colors,
+ .object_spacing = setup->object_spacing * 72 * XR_POINT,
+ .font_resolution = old_fs->font_resolution,
+ };
+ xr_fsm_style_unref (old_fs);
-/* 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;
+ xr_set_surface_size (xr->dest_surface, xr->output_type,
+ setup->paper[H] * 72.0, setup->paper[V] * 72.0);
}
static void
-xr_driver_destroy_fsm (struct xr_driver *xr)
+xr_submit (struct output_driver *driver, const struct output_item *item)
{
- xr_fsm_destroy (xr->fsm);
- xr->fsm = NULL;
+ struct xr_driver *xr = xr_driver_cast (driver);
+
+ if (!xr->pager)
+ {
+ xr->pager = xr_pager_create (xr->page_style, xr->fsm_style);
+ xr_pager_add_page (xr->pager, cairo_create (xr->drawing_surface));
+ }
+
+ xr_pager_add_item (xr->pager, item);
+ while (xr_pager_needs_new_page (xr->pager))
+ {
+ xr_finish_page (xr);
+ xr_pager_add_page (xr->pager, cairo_create (xr->drawing_surface));
+ }
}
static void
-xr_driver_run_fsm (struct xr_driver *xr)
+xr_setup (struct output_driver *driver, const struct page_setup *ps)
{
- if (xr->fsm != NULL)
- {
- cairo_save (xr->cairo);
- cairo_translate (xr->cairo, 0, xr_to_pt (xr->y));
- int used = xr_fsm_draw_slice (xr->fsm, xr->cairo, xr->size[V] - xr->y);
- xr->y += used;
- cairo_restore (xr->cairo);
-
- if (xr_fsm_is_empty (xr->fsm))
- xr_driver_destroy_fsm (xr);
- }
+ struct xr_driver *xr = xr_driver_cast (driver);
+
+ if (!xr->pager)
+ xr_update_page_setup (driver, ps);
}
\f
struct output_driver_factory pdf_driver_factory =
{ "ps", "pspp.ps", xr_ps_create };
struct output_driver_factory svg_driver_factory =
{ "svg", "pspp.svg", xr_svg_create };
+struct output_driver_factory png_driver_factory =
+ { "png", "pspp.png", xr_png_create };
static const struct output_driver_class cairo_driver_class =
{
- "cairo",
- xr_destroy,
- xr_submit,
- xr_flush,
+ .name = "cairo",
+ .destroy = xr_destroy,
+ .submit = xr_submit,
+ .setup = xr_setup,
+ .handles_groups = true,
};
-\f
-struct xr_driver *
-xr_driver_create (cairo_t *cairo, struct string_map *options)
-{
- struct xr_driver *xr = xr_allocate ("cairo", 0, options);
- xr_set_cairo (xr, cairo);
- 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);
- }
-}
projects / pspp / blobdiff