X-Git-Url: https://pintos-os.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=src%2Foutput%2Fcairo.c;h=e5ac93bcf0635a63d5c0d094fd39dbc62f647cc1;hb=29917c4f5908454803e663d2ad78bca4bc35e805;hp=c7b14ff68c6baf496f5e1d961402d30f8b014142;hpb=75ac1e869e551495c403cf94a3a24dd0dfee98ef;p=pspp diff --git a/src/output/cairo.c b/src/output/cairo.c index c7b14ff68c..e5ac93bcf0 100644 --- a/src/output/cairo.c +++ b/src/output/cairo.c @@ -16,55 +16,30 @@ #include -#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/chart-item-provider.h" -#include "output/charts/boxplot.h" -#include "output/charts/np-plot.h" -#include "output/charts/piechart.h" -#include "output/charts/barchart.h" -#include "output/charts/plot-hist.h" -#include "output/charts/roc-chart.h" -#include "output/charts/spreadlevel-plot.h" -#include "output/charts/scree.h" -#include "output/charts/scatterplot.h" +#include "output/cairo-fsm.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-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 #include #include + #include #include #include #include -#include -#include -#include #include -#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" @@ -85,51 +60,13 @@ xr_to_pt (int x) return x / (double) XR_POINT; } -/* Conversion from 1/96" units ("pixels") to Cairo/Pango units. */ -static int -px_to_xr (int x) -{ - return x * (PANGO_SCALE * 72 / 96); -} - -/* 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 - }; - -/* 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 - { - PangoFontDescription *desc; - PangoLayout *layout; - }; - -/* An output item whose rendering is in progress. */ -struct xr_render_fsm - { - /* 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 *); - - /* Destroys the output item. */ - void (*destroy) (struct xr_render_fsm *); + XR_SVG, + XR_PNG }; /* Cairo output driver. */ @@ -137,62 +74,51 @@ struct xr_driver { struct output_driver driver; - /* User parameters. */ - struct xr_font fonts[XR_N_FONTS]; + enum xr_output_type output_type; + struct xr_fsm_style *fsm_style; + struct xr_page_style *page_style; + struct xr_pager *pager; + bool trim; - int width; /* Page width minus margins. */ - int length; /* Page length minus margins and header. */ + /* This is the surface where we're currently drawing. It is always + nonnull. - int left_margin; /* Left margin in inch/(72 * XR_POINT). */ - int right_margin; /* Right margin in inch/(72 * XR_POINT). */ - int top_margin; /* Top margin in inch/(72 * XR_POINT). */ - int bottom_margin; /* Bottom margin in inch/(72 * XR_POINT). */ + 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. - int min_break[TABLE_N_AXES]; /* Min cell size to break across pages. */ - int object_spacing; /* Space between output objects. */ + If 'trim' is false: - 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 */ + - For output to a PDF or PostScript file, it is the same pointer as + 'dest_surface'. - int initial_page_number; + - For output to a PNG file, it is an image surface. - struct page_heading headings[2]; /* Top and bottom headings. */ - int headings_height[2]; + - For output to an SVG file, it is a recording surface. + */ + cairo_surface_t *drawing_surface; - /* Internal state. */ - struct render_params *params; - double font_scale; - int char_width, char_height; - cairo_t *cairo; - cairo_surface_t *surface; - int page_number; /* Current page number. */ - int y; - struct xr_render_fsm *fsm; + /* - 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 *); - -static void xr_draw_line (void *, int bb[TABLE_N_AXES][2], - enum render_line_style styles[TABLE_N_AXES][2], - struct cell_color colors[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 color_idx, - int bb[TABLE_N_AXES][2], int valign_offset, - int spill[TABLE_N_AXES][2], - int clip[TABLE_N_AXES][2]); -static int xr_adjust_break (void *, const struct table_cell *, - int width, int height); - -static struct xr_render_fsm *xr_render_output_item ( - struct xr_driver *, const struct output_item *); /* Output driver basics. */ @@ -257,316 +183,134 @@ parse_font_option (struct output_driver *d, struct string_map *options, 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(). */ - int left_margin, right_margin; - int top_margin, bottom_margin; - int paper_width, paper_length; - int font_size; - int min_break[TABLE_N_AXES]; + 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.; - int i; + 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; - 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); - } - - font_size = parse_int (opt (d, o, "font-size", "10000"), 1000, 1000000); - xr->fonts[XR_FONT_FIXED].desc = parse_font_option - (d, o, "fixed-font", "monospace", font_size, false, false); - xr->fonts[XR_FONT_PROPORTIONAL].desc = parse_font_option ( - d, o, "prop-font", "sans serif", font_size, false, false); - xr->fonts[XR_FONT_EMPHASIS].desc = parse_font_option ( - d, o, "emph-font", "sans serif", font_size, false, true); + int margins[TABLE_N_AXES][2]; + 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; - 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. */ - parse_paper_size (opt (d, o, "paper-size", ""), &paper_width, &paper_length); - left_margin = parse_dimension (opt (d, o, "left-margin", ".5in")); - right_margin = parse_dimension (opt (d, o, "right-margin", ".5in")); - top_margin = parse_dimension (opt (d, o, "top-margin", ".5in")); - bottom_margin = parse_dimension (opt (d, o, "bottom-margin", ".5in")); + 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; + for (int a = 0; a < TABLE_N_AXES; a++) + if (min_break[a] <= 0) + min_break[a] = size[a] / 2; - int object_spacing = (parse_dimension (opt (d, o, "object-spacing", NULL)) - * scale); - - /* Convert to inch/(XR_POINT * 72). */ - xr->left_margin = left_margin * scale; - xr->right_margin = right_margin * scale; - xr->top_margin = top_margin * scale; - xr->bottom_margin = bottom_margin * scale; - xr->width = (paper_width - left_margin - right_margin) * scale; - xr->length = (paper_length - top_margin - bottom_margin) * scale; - xr->min_break[H] = min_break[H] >= 0 ? min_break[H] : xr->width / 2; - xr->min_break[V] = min_break[V] >= 0 ? min_break[V] : xr->length / 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, - double font_scale) -{ - struct xr_driver *xr = xzalloc (sizeof *xr); - struct output_driver *d = &xr->driver; - - output_driver_init (d, &cairo_driver_class, name, device_type); - - /* This is a nasty kluge for an issue that does not make sense. On any - surface other than a screen (e.g. for output to PDF or PS or SVG), the - fonts are way too big by default. A "9-point" font seems to appear about - 16 points tall. We use a scale factor for these surfaces to help, but the - underlying issue is a mystery. */ - xr->font_scale = font_scale; - - 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); -} + 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); -static int -xr_to_pango (int xr) -{ - return (XR_POINT != PANGO_SCALE - ? ceil (xr * (1. / XR_POINT * PANGO_SCALE)) - : xr); -} - -static void -xr_measure_fonts (cairo_t *cairo, const struct xr_font 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++) - { - PangoLayout *layout = pango_cairo_create_layout (cairo); - pango_layout_set_font_description (layout, fonts[i].desc); + struct cell_color fg = parse_color (opt (d, o, "foreground-color", "black")); - pango_layout_set_text (layout, "0", 1); + bool systemcolors = parse_boolean (opt (d, o, "systemcolors", "false")); - 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)); - } -} + int object_spacing + = parse_dimension (opt (d, o, "object-spacing", NULL)) * scale; + if (object_spacing <= 0) + object_spacing = XR_POINT * 12; -static int -get_layout_height (PangoLayout *layout) -{ - int w, h; - pango_layout_get_size (layout, &w, &h); - return h; -} + const char *default_resolution = (output_type == XR_PNG ? "96" : "72"); + int font_resolution = parse_int (opt (d, o, "font-resolution", + default_resolution), 10, 1000); -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) -{ - PangoLayout *layout = pango_cairo_create_layout (cairo); - pango_layout_set_font_description (layout, font); + xr->trim = parse_boolean (opt (d, o, "trim", "false")); - 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); - } + /* 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"))); - y += pango_to_xr (get_layout_height (layout)); - } + xr->page_style = xmalloc (sizeof *xr->page_style); + *xr->page_style = (struct xr_page_style) { + .ref_cnt = 1, - g_object_unref (G_OBJECT (layout)); + .margins = { + [H] = { margins[H][0], margins[H][1], }, + [V] = { margins[V][0], margins[V][1], }, + }, - return y; -} - -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); - - /* If the top heading is nonempty, add some space below it. */ - if (h && i == 0) - h += object_spacing; - - if (height) - height[i] = h; - total += h; - } - cairo_destroy (cairo); - return total; -} - -static bool -xr_check_fonts (cairo_surface_t *surface, - const struct xr_font 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; -} - -static void -xr_set_cairo (struct xr_driver *xr, cairo_t *cairo) -{ - xr->cairo = cairo; - - cairo_set_line_width (xr->cairo, xr_to_pt (XR_LINE_WIDTH)); - - xr_measure_fonts (xr->cairo, xr->fonts, &xr->char_width, &xr->char_height); - - for (int i = 0; i < XR_N_FONTS; i++) - { - struct xr_font *font = &xr->fonts[i]; - font->layout = pango_cairo_create_layout (cairo); - pango_layout_set_font_description (font->layout, font->desc); - } - - if (xr->params == NULL) - { - 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->adjust_break = xr_adjust_break; - 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; - - int lw = XR_LINE_WIDTH; - int ls = XR_LINE_SPACE; - for (int i = 0; i < TABLE_N_AXES; i++) - { - xr->params->line_widths[i][RENDER_LINE_NONE] = 0; - xr->params->line_widths[i][RENDER_LINE_SINGLE] = lw; - xr->params->line_widths[i][RENDER_LINE_DASHED] = lw; - xr->params->line_widths[i][RENDER_LINE_THICK] = lw * 2; - xr->params->line_widths[i][RENDER_LINE_THIN] = lw / 2; - xr->params->line_widths[i][RENDER_LINE_DOUBLE] = 2 * lw + ls; - } + .initial_page_number = 1, + .include_outline = include_outline, + }; - for (int i = 0; i < TABLE_N_AXES; i++) - xr->params->min_break[i] = xr->min_break[i]; - xr->params->supports_margins = true; - xr->params->rtl = render_direction_rtl (); - } + 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, 72.0 / 128.0); - double width_pt = xr_to_pt (xr->width + xr->left_margin + xr->right_margin); - double length_pt = xr_to_pt (xr->length + xr->top_margin + xr->bottom_margin); - if (file_type == XR_PDF) - xr->surface = cairo_pdf_surface_create (file_name, width_pt, length_pt); - else if (file_type == XR_PS) - xr->surface = cairo_ps_surface_create (file_name, width_pt, length_pt); - else if (file_type == XR_SVG) - xr->surface = cairo_svg_surface_create (file_name, width_pt, length_pt); - else - NOT_REACHED (); - - cairo_status_t status = cairo_surface_status (xr->surface); - if (status != CAIRO_STATUS_SUCCESS) - { - msg (ME, _("error opening output file `%s': %s"), - file_name, cairo_status_to_string (status)); - goto error; + struct xr_driver *xr = xr_allocate (file_name, device_type, output_type, o); + + 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->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) + { + 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->width, xr->length)) - 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; @@ -598,954 +342,290 @@ xr_svg_create (struct file_handle *fh, enum settings_output_devices device_type, return xr_create (fh, device_type, o, XR_SVG); } -static void -xr_destroy (struct output_driver *driver) -{ - struct xr_driver *xr = xr_driver_cast (driver); - size_t i; - - xr_driver_destroy_fsm (xr); - - if (xr->cairo != NULL) - { - 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); - - cairo_destroy (xr->cairo); - } - - 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); - } - - free (xr->params); - free (xr); -} - -static void -xr_flush (struct output_driver *driver) -{ - struct xr_driver *xr = xr_driver_cast (driver); - - cairo_surface_flush (cairo_get_target (xr->cairo)); -} - -static void -xr_update_page_setup (struct output_driver *driver, - const struct page_setup *ps) +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); - - xr->initial_page_number = ps->initial_page_number; - xr->object_spacing = ps->object_spacing * 72 * XR_POINT; - - if (xr->cairo) - return; - - int usable[TABLE_N_AXES]; - for (int i = 0; i < 2; i++) - usable[i] = (ps->paper[i] - - (ps->margins[i][0] + ps->margins[i][1])) * 72 * XR_POINT; - - int headings_height[2]; - usable[V] -= xr_measure_headings ( - xr->surface, xr->fonts[XR_FONT_PROPORTIONAL].desc, ps->headings, - usable[H], xr->object_spacing, headings_height); - - enum table_axis h = ps->orientation == PAGE_LANDSCAPE; - enum table_axis v = !h; - if (!xr_check_fonts (xr->surface, xr->fonts, usable[h], usable[v])) - return; - - 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]; - } - xr->width = usable[h]; - xr->length = usable[v]; - xr->left_margin = ps->margins[h][0] * 72 * XR_POINT; - xr->right_margin = ps->margins[h][1] * 72 * XR_POINT; - xr->top_margin = ps->margins[v][0] * 72 * XR_POINT; - xr->bottom_margin = ps->margins[v][1] * 72 * XR_POINT; - cairo_pdf_surface_set_size (xr->surface, - ps->paper[h] * 72.0, ps->paper[v] * 72.0); + return xr_create (fh, device_type, o, XR_PNG); } static void -xr_submit (struct output_driver *driver, const struct output_item *output_item) +xr_set_surface_size (cairo_surface_t *surface, enum xr_output_type output_type, + double width, double height) { - struct xr_driver *xr = xr_driver_cast (driver); - - if (is_page_setup_item (output_item)) + switch (output_type) { - xr_update_page_setup (driver, - to_page_setup_item (output_item)->page_setup); - return; - } - - 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_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); - } -} - -/* 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. + case XR_PDF: + cairo_pdf_surface_set_size (surface, width, height); + break; - See the big comment in cairo.h for intended usage. */ + case XR_PS: + cairo_ps_surface_set_size (surface, width, height); + break; -/* Gives new page CAIRO to XR for output. */ -void -xr_driver_next_page (struct xr_driver *xr, cairo_t *cairo) -{ - 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->width, xr->length); - cairo_fill (cairo); - cairo_restore (cairo); + case XR_SVG: + case XR_PNG: + NOT_REACHED (); } - cairo_translate (cairo, - xr_to_pt (xr->left_margin), - xr_to_pt (xr->top_margin + xr->headings_height[0])); - - xr->page_number++; - xr->cairo = cairo; - xr->y = 0; - - xr_render_page_heading (xr->cairo, xr->fonts[XR_FONT_PROPORTIONAL].desc, - &xr->headings[0], xr->page_number, xr->width, true, - -xr->headings_height[0]); - xr_render_page_heading (xr->cairo, xr->fonts[XR_FONT_PROPORTIONAL].desc, - &xr->headings[1], xr->page_number, xr->width, true, - xr->length); - - xr_driver_run_fsm (xr); -} - -/* 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_render_output_item (xr, output_item); - xr_driver_run_fsm (xr); -} - -/* 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; -} - -/* 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; } static void -xr_driver_destroy_fsm (struct xr_driver *xr) +xr_copy_surface (cairo_surface_t *dst, cairo_surface_t *src, + double x, double y) { - if (xr->fsm != NULL) - { - xr->fsm->destroy (xr->fsm); - xr->fsm = NULL; - } + cairo_t *cr = cairo_create (dst); + cairo_set_source_surface (cr, src, x, y); + cairo_paint (cr); + cairo_destroy (cr); } static void -xr_driver_run_fsm (struct xr_driver *xr) +clear_rectangle (cairo_surface_t *surface, + double x0, double y0, double x1, double y1) { - if (xr->fsm != NULL && !xr->fsm->render (xr->fsm, xr)) - xr_driver_destroy_fsm (xr); + 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_layout_cell (struct xr_driver *, const struct table_cell *, - int bb[TABLE_N_AXES][2], int clip[TABLE_N_AXES][2], - int *width, int *height, int *brk); static void -set_source_rgba (cairo_t *cairo, const struct cell_color *color) +xr_report_error (cairo_status_t status, const char *file_name) { - cairo_set_source_rgba (cairo, - color->r / 255., color->g / 255., color->b / 255., - color->alpha / 255.); + if (status != CAIRO_STATUS_SUCCESS) + fprintf (stderr, "%s: %s\n", file_name, cairo_status_to_string (status)); } static void -dump_line (struct xr_driver *xr, int x0, int y0, int x1, int y1, int style, - const struct cell_color *color) +xr_finish_page (struct xr_driver *xr) { - cairo_new_path (xr->cairo); - if (!xr->systemcolors) - set_source_rgba (xr->cairo, color); - cairo_set_line_width ( - xr->cairo, - xr_to_pt (style == RENDER_LINE_THICK ? XR_LINE_WIDTH * 2 - : style == RENDER_LINE_THIN ? XR_LINE_WIDTH / 2 - : XR_LINE_WIDTH)); - 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); -} + xr_pager_finish_page (xr->pager); -static void UNUSED -dump_rectangle (struct xr_driver *xr, int x0, int y0, int x1, int y1) -{ - cairo_new_path (xr->cairo); - cairo_set_line_width (xr->cairo, xr_to_pt (XR_LINE_WIDTH)); - cairo_close_path (xr->cairo); - cairo_stroke (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 (y0 + xr->y)); - cairo_line_to (xr->cairo, xr_to_pt (x1), xr_to_pt (y1 + xr->y)); - cairo_line_to (xr->cairo, xr_to_pt (x0), xr_to_pt (y1 + xr->y)); -} + /* For 'trim' true: -static void -fill_rectangle (struct xr_driver *xr, int x0, int y0, int x1, int y1) -{ - cairo_new_path (xr->cairo); - cairo_set_line_width (xr->cairo, xr_to_pt (XR_LINE_WIDTH)); - cairo_rectangle (xr->cairo, - xr_to_pt (x0), xr_to_pt (y0 + xr->y), - xr_to_pt (x1 - x0), xr_to_pt (y1 - y0)); - cairo_fill (xr->cairo); -} + - If the destination is PDF or PostScript, set the dest surface size, copy + ink extent, show_page. -/* Draws a horizontal line X0...X2 at Y if LEFT says so, - shortening it to X0...X1 if SHORTEN is true. - 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 xr_driver *xr, int x0, int x1, int x2, int x3, int y, - enum render_line_style left, enum render_line_style right, - const struct cell_color *left_color, - const struct cell_color *right_color, - bool shorten) -{ - if (left != RENDER_LINE_NONE && right != RENDER_LINE_NONE && !shorten - && cell_color_equal (left_color, right_color)) - dump_line (xr, x0, y, x3, y, left, left_color); - else - { - if (left != RENDER_LINE_NONE) - dump_line (xr, x0, y, shorten ? x1 : x2, y, left, left_color); - if (right != RENDER_LINE_NONE) - dump_line (xr, shorten ? x2 : x1, y, x3, y, right, right_color); - } -} - -/* Draws a vertical line Y0...Y2 at X if TOP says so, - shortening it to Y0...Y1 if SHORTEN is true. - 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 xr_driver *xr, int y0, int y1, int y2, int y3, int x, - enum render_line_style top, enum render_line_style bottom, - const struct cell_color *top_color, - const struct cell_color *bottom_color, - bool shorten) -{ - if (top != RENDER_LINE_NONE && bottom != RENDER_LINE_NONE && !shorten - && cell_color_equal (top_color, bottom_color)) - dump_line (xr, x, y0, x, y3, top, top_color); - else - { - if (top != RENDER_LINE_NONE) - dump_line (xr, x, y0, x, shorten ? y1 : y2, top, top_color); - if (bottom != RENDER_LINE_NONE) - dump_line (xr, x, shorten ? y2 : y1, x, y3, bottom, bottom_color); - } -} + - If the destination is PNG, create image surface, copy ink extent, + cairo_surface_write_to_png(), destroy image surface. -static void -xr_draw_line (void *xr_, int bb[TABLE_N_AXES][2], - enum render_line_style styles[TABLE_N_AXES][2], - struct cell_color colors[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 bottom = styles[H][1]; - - int start_side = render_direction_rtl(); - int end_side = !start_side; - const int start_of_line = styles[V][start_side]; - const int end_of_line = styles[V][end_side]; - const struct cell_color *top_color = &colors[H][0]; - const struct cell_color *bottom_color = &colors[H][1]; - const struct cell_color *start_color = &colors[V][start_side]; - const struct cell_color *end_color = &colors[V][end_side]; - - /* The algorithm here is somewhat subtle, to allow it to handle - all the kinds of intersections that we need. - - Three additional ordinates are assigned along the x axis. The - first is xc, midway between x0 and x3. The others are x1 and - x2; for a single vertical line these are equal to xc, and for - a double vertical line they are the ordinates of the left and - right half of the double line. - - yc, y1, and y2 are assigned similarly along the y axis. - - The following diagram shows the coordinate system and output - for double top and bottom lines, single left line, and no - right line: - - x0 x1 xc x2 x3 - y0 ________________________ - | # # | - | # # | - | # # | - | # # | - | # # | - y1 = y2 = yc |######### # | - | # # | - | # # | - | # # | - | # # | - y3 |________#_____#_______| - */ - struct xr_driver *xr = xr_; - - /* Offset from center of each line in a pair of double lines. */ - 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 == RENDER_LINE_DOUBLE || bottom == RENDER_LINE_DOUBLE; - bool double_horz = start_of_line == RENDER_LINE_DOUBLE || end_of_line == RENDER_LINE_DOUBLE; - - /* When horizontal lines are doubled, - the left-side line along y1 normally runs from x0 to x2, - and the right-side line along y1 from x3 to x1. - If the top-side line is also doubled, we shorten the y1 lines, - so that the left-side line runs only to x1, - and the right-side line only to x2. - Otherwise, the horizontal line at y = y1 below would cut off - the intersection, which looks ugly: - x0 x1 x2 x3 - y0 ________________________ - | # # | - | # # | - | # # | - | # # | - y1 |######### ########| - | | - | | - y2 |######################| - | | - | | - y3 |______________________| - It is more of a judgment call when the horizontal line is - single. We actually choose to cut off the line anyhow, as - shown in the first diagram above. - */ - 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 = start_of_line == RENDER_LINE_DOUBLE; - bool shorten_x2_lines = end_of_line == 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 y1 = yc - vert_line_ofs; - int y2 = yc + vert_line_ofs; - - if (!double_horz) - horz_line (xr, x0, x1, x2, x3, yc, start_of_line, end_of_line, - start_color, end_color, shorten_yc_line); - else - { - horz_line (xr, x0, x1, x2, x3, y1, start_of_line, end_of_line, - start_color, end_color, shorten_y1_lines); - horz_line (xr, x0, x1, x2, x3, y2, start_of_line, end_of_line, - start_color, end_color, shorten_y2_lines); - } - - if (!double_vert) - vert_line (xr, y0, y1, y2, y3, xc, top, bottom, top_color, bottom_color, - shorten_xc_line); - else - { - vert_line (xr, y0, y1, y2, y3, x1, top, bottom, top_color, bottom_color, - shorten_x1_lines); - vert_line (xr, y0, y1, y2, y3, x2, top, bottom, top_color, bottom_color, - shorten_x2_lines); - } -} + - If the destination is SVG, create svg surface, copy ink extent, close. -static void -xr_measure_cell_width (void *xr_, const struct table_cell *cell, - int *min_width, int *max_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, max_width, &h, NULL); - - bb[H][1] = 1; - xr_layout_cell (xr, cell, bb, clip, min_width, &h, NULL); - - if (*min_width > 0) - *min_width += px_to_xr (cell->style->cell_style.margin[H][0] - + cell->style->cell_style.margin[H][1]); - if (*max_width > 0) - *max_width += px_to_xr (cell->style->cell_style.margin[H][0] - + cell->style->cell_style.margin[H][1]); -} + then destroy drawing_surface and make a new one. -static int -xr_measure_cell_height (void *xr_, const struct table_cell *cell, int width) -{ - 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 - px_to_xr (cell->style->cell_style.margin[H][0] - + cell->style->cell_style.margin[H][1]); - 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, &w, &h, NULL); - h += px_to_xr (cell->style->cell_style.margin[V][0] - + cell->style->cell_style.margin[V][1]); - return h; -} + For 'trim' false: -static void xr_clip (struct xr_driver *, int clip[TABLE_N_AXES][2]); + - If the destination is PDF or PostScript, show_page. -static void -xr_draw_cell (void *xr_, const struct table_cell *cell, int color_idx, - int bb[TABLE_N_AXES][2], int valign_offset, - int spill[TABLE_N_AXES][2], - int clip[TABLE_N_AXES][2]) -{ - struct xr_driver *xr = xr_; - int w, h, brk; + - If the destination is PNG, cairo_surface_write_to_png(), destroy image + surface, create new image surface. - if (!xr->transparent) - { - cairo_save (xr->cairo); - int bg_clip[TABLE_N_AXES][2]; - for (int axis = 0; axis < TABLE_N_AXES; axis++) - { - bg_clip[axis][0] = clip[axis][0]; - if (bb[axis][0] == clip[axis][0]) - bg_clip[axis][0] -= spill[axis][0]; - - bg_clip[axis][1] = clip[axis][1]; - if (bb[axis][1] == clip[axis][1]) - bg_clip[axis][1] += spill[axis][1]; - } - xr_clip (xr, bg_clip); - set_source_rgba (xr->cairo, &cell->style->font_style.bg[color_idx]); - fill_rectangle (xr, - bb[H][0] - spill[H][0], - bb[V][0] - spill[V][0], - bb[H][1] + spill[H][1], - bb[V][1] + spill[V][1]); - cairo_restore (xr->cairo); - } - cairo_save (xr->cairo); - if (!xr->systemcolors) - set_source_rgba (xr->cairo, &cell->style->font_style.fg[color_idx]); + - If the destination is SVG, create svg surface, copy whole thing, close. - bb[V][0] += valign_offset; + */ + 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)); - for (int axis = 0; axis < TABLE_N_AXES; axis++) - { - bb[axis][0] += px_to_xr (cell->style->cell_style.margin[axis][0]); - bb[axis][1] -= px_to_xr (cell->style->cell_style.margin[axis][1]); - } - if (bb[H][0] < bb[H][1] && bb[V][0] < bb[V][1]) - xr_layout_cell (xr, cell, bb, clip, &w, &h, &brk); - cairo_restore (xr->cairo); -} + 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; + } -static int -xr_adjust_break (void *xr_, const struct table_cell *cell, - int width, int height) -{ - struct xr_driver *xr = xr_; - int bb[TABLE_N_AXES][2]; - int clip[TABLE_N_AXES][2]; - int w, h, brk; - - if (xr_measure_cell_height (xr_, cell, width) < height) - return -1; - - bb[H][0] = 0; - bb[H][1] = width - px_to_xr (cell->style->cell_style.margin[H][0] - + cell->style->cell_style.margin[H][1]); - if (bb[H][1] <= 0) - return 0; - bb[V][0] = 0; - bb[V][1] = height - px_to_xr (cell->style->cell_style.margin[V][0] - + cell->style->cell_style.margin[V][1]); - clip[H][0] = clip[H][1] = clip[V][0] = clip[V][1] = 0; - xr_layout_cell (xr, cell, bb, clip, &w, &h, &brk); - return brk; -} - -static void -xr_clip (struct xr_driver *xr, int clip[TABLE_N_AXES][2]) -{ - if (clip[H][1] != INT_MAX || clip[V][1] != INT_MAX) - { - 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); + 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; - cairo_rectangle (xr->cairo, x0, y0, x1 - x0, y1 - y0); - cairo_clip (xr->cairo); - } -} + 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; -static void -add_attr (PangoAttrList *list, PangoAttribute *attr, - guint start_index, guint end_index) -{ - attr->start_index = start_index; - attr->end_index = end_index; - pango_attr_list_insert (list, attr); -} + 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; + } -static void -markup_escape (struct string *out, unsigned int options, - const char *in, size_t len) -{ - if (!(options & TAB_MARKUP)) - { - ds_put_substring (out, ss_buffer (in, len == -1 ? strlen (in) : len)); - return; + /* 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] }); } - - while (len-- > 0) + else { - int c = *in++; - switch (c) + switch (xr->output_type) { - case 0: - return; - case '&': - ds_put_cstr (out, "&"); - break; - case '<': - ds_put_cstr (out, "<"); + case XR_PDF: + case XR_PS: + cairo_surface_show_page (xr->dest_surface); break; - case '>': - ds_put_cstr (out, ">"); + + 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; - default: - ds_put_byte (out, c); + + 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; } } -} -static int -get_layout_dimension (PangoLayout *layout, enum table_axis axis) -{ - int size[TABLE_N_AXES]; - pango_layout_get_size (layout, &size[H], &size[V]); - return size[axis]; + if (file_name != xr->driver.name) + free (file_name); } -static int -xr_layout_cell_text (struct xr_driver *xr, const struct table_cell *cell, - int bb[TABLE_N_AXES][2], int clip[TABLE_N_AXES][2], - int *widthp, int *brk) +static void +xr_destroy (struct output_driver *driver) { - const struct font_style *font_style = &cell->style->font_style; - const struct cell_style *cell_style = &cell->style->cell_style; - unsigned int options = cell->options; - - enum table_axis X = options & TAB_ROTATE ? V : H; - enum table_axis Y = !X; - int R = options & TAB_ROTATE ? 0 : 1; - - struct xr_font *font = (options & TAB_FIX ? &xr->fonts[XR_FONT_FIXED] - : &xr->fonts[XR_FONT_PROPORTIONAL]); - struct xr_font local_font; - if (font_style->typeface) - { - PangoFontDescription *desc = parse_font ( - font_style->typeface, - font_style->size ? font_style->size * 1000 * xr->font_scale : 10000, - font_style->bold, font_style->italic); - if (desc) - { - PangoLayout *layout = pango_cairo_create_layout (xr->cairo); - pango_layout_set_font_description (layout, desc); - - local_font.desc = desc; - local_font.layout = layout; - font = &local_font; - } - } - - const char *text = cell->text; - enum table_halign halign = table_halign_interpret ( - cell_style->halign, cell->options & TAB_NUMERIC); - if (cell_style->halign == TABLE_HALIGN_DECIMAL && !(options & TAB_ROTATE)) - { - int margin_adjustment = -px_to_xr (cell_style->decimal_offset); - - const char *decimal = strrchr (text, cell_style->decimal_char); - if (decimal) - { - pango_layout_set_text (font->layout, decimal, strlen (decimal)); - pango_layout_set_width (font->layout, -1); - margin_adjustment += get_layout_dimension (font->layout, H); - } - - if (margin_adjustment < 0) - bb[H][1] += margin_adjustment; - } - - struct string tmp = DS_EMPTY_INITIALIZER; - PangoAttrList *attrs = NULL; - - /* Deal with an oddity of the Unicode line-breaking algorithm (or perhaps in - Pango's implementation of it): it will break after a period or a comma - that precedes a digit, e.g. in ".000" it will break after the period. - This code looks for such a situation and inserts a U+2060 WORD JOINER - to prevent the break. + struct xr_driver *xr = xr_driver_cast (driver); - This isn't necessary when the decimal point is between two digits - (e.g. "0.000" won't be broken) or when the display width is not limited so - that word wrapping won't happen. + if (xr->pager) + xr_finish_page (xr); - It isn't necessary to look for more than one period or comma, as would - happen with grouping like 1,234,567.89 or 1.234.567,89 because if groups - are present then there will always be a digit on both sides of every - period and comma. */ - if (options & TAB_MARKUP) - { - PangoAttrList *new_attrs; - char *new_text; - if (pango_parse_markup (text, -1, 0, &new_attrs, &new_text, NULL, NULL)) - { - attrs = new_attrs; - tmp.ss = ss_cstr (new_text); - tmp.capacity = tmp.ss.length; - } - else - { - /* XXX should we report the error? */ - ds_put_cstr (&tmp, text); - } - } - else if (options & TAB_ROTATE || bb[H][1] != INT_MAX) - { - const char *decimal = text + strcspn (text, ".,"); - if (decimal[0] - && c_isdigit (decimal[1]) - && (decimal == text || !c_isdigit (decimal[-1]))) - { - ds_extend (&tmp, strlen (text) + 16); - markup_escape (&tmp, options, text, decimal - text + 1); - ds_put_unichar (&tmp, 0x2060 /* U+2060 WORD JOINER */); - markup_escape (&tmp, options, decimal + 1, -1); - } - } + xr_pager_destroy (xr->pager); - if (font_style->underline) + if (xr->drawing_surface && xr->drawing_surface != xr->dest_surface) + cairo_surface_destroy (xr->drawing_surface); + if (xr->dest_surface) { - if (!attrs) - attrs = pango_attr_list_new (); - pango_attr_list_insert (attrs, pango_attr_underline_new ( - PANGO_UNDERLINE_SINGLE)); + 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); } - if (cell->n_footnotes || cell->n_subscripts || cell->superscript) - { - /* If we haven't already put TEXT into tmp, do it now. */ - if (ds_is_empty (&tmp)) - { - ds_extend (&tmp, strlen (text) + 16); - markup_escape (&tmp, options, text, -1); - } + xr_page_style_unref (xr->page_style); + xr_fsm_style_unref (xr->fsm_style); + free (xr); +} - size_t subscript_ofs = ds_length (&tmp); - for (size_t i = 0; i < cell->n_subscripts; i++) - { - if (i) - ds_put_byte (&tmp, ','); - ds_put_cstr (&tmp, cell->subscripts[i]); - } +static void +xr_update_page_setup (struct output_driver *driver, + const struct page_setup *setup) +{ + struct xr_driver *xr = xr_driver_cast (driver); - size_t superscript_ofs = ds_length (&tmp); - if (cell->superscript) - ds_put_cstr (&tmp, cell->superscript); + const double scale = 72 * XR_POINT; - size_t footnote_ofs = ds_length (&tmp); - for (size_t i = 0; i < cell->n_footnotes; i++) - { - if (i) - ds_put_byte (&tmp, ','); - ds_put_cstr (&tmp, cell->footnotes[i]->marker); - } + int swap = setup->orientation == PAGE_LANDSCAPE; + enum table_axis h = H ^ swap; + enum table_axis v = V ^ swap; - /* Allow footnote markers to occupy the right margin. That way, numbers - in the column are still aligned. */ - if (cell->n_footnotes && halign == TABLE_HALIGN_RIGHT) - { - /* Measure the width of the footnote marker, so we know how much we - need to make room for. */ - pango_layout_set_text (font->layout, ds_cstr (&tmp) + footnote_ofs, - ds_length (&tmp) - footnote_ofs); - - PangoAttrList *fn_attrs = pango_attr_list_new (); - pango_attr_list_insert ( - fn_attrs, pango_attr_scale_new (PANGO_SCALE_SMALL)); - pango_attr_list_insert (fn_attrs, pango_attr_rise_new (3000)); - pango_layout_set_attributes (font->layout, fn_attrs); - pango_attr_list_unref (fn_attrs); - int footnote_width = get_layout_dimension (font->layout, X); - - /* Bound the adjustment by the width of the right margin. */ - int right_margin = px_to_xr (cell_style->margin[X][R]); - int footnote_adjustment = MIN (footnote_width, right_margin); - - /* Adjust the bounding box. */ - if (options & TAB_ROTATE) - footnote_adjustment = -footnote_adjustment; - bb[X][R] += footnote_adjustment; - - /* Clean up. */ - pango_layout_set_attributes (font->layout, NULL); - } + 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, - /* Set attributes. */ - if (!attrs) - attrs = pango_attr_list_new (); - add_attr (attrs, pango_attr_font_desc_new (font->desc), subscript_ofs, - PANGO_ATTR_INDEX_TO_TEXT_END); - add_attr (attrs, pango_attr_scale_new (PANGO_SCALE_SMALL), - subscript_ofs, PANGO_ATTR_INDEX_TO_TEXT_END); - if (cell->n_subscripts) - add_attr (attrs, pango_attr_rise_new (-3000), subscript_ofs, - superscript_ofs - subscript_ofs); - if (cell->superscript || cell->n_footnotes) - add_attr (attrs, pango_attr_rise_new (3000), superscript_ofs, - PANGO_ATTR_INDEX_TO_TEXT_END); - } + .margins = { + [H] = { setup->margins[h][0] * scale, setup->margins[h][1] * scale }, + [V] = { setup->margins[v][0] * scale, setup->margins[v][1] * scale }, + }, - /* Set the attributes, if any. */ - if (attrs) - { - pango_layout_set_attributes (font->layout, attrs); - pango_attr_list_unref (attrs); - } + .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); - /* Set the text. */ - if (ds_is_empty (&tmp)) - pango_layout_set_text (font->layout, text, -1); - else - pango_layout_set_text (font->layout, ds_cstr (&tmp), ds_length (&tmp)); - ds_destroy (&tmp); - - pango_layout_set_alignment (font->layout, - (halign == TABLE_HALIGN_RIGHT ? PANGO_ALIGN_RIGHT - : halign == TABLE_HALIGN_LEFT ? PANGO_ALIGN_LEFT - : PANGO_ALIGN_CENTER)); - pango_layout_set_width ( - font->layout, - bb[X][1] == INT_MAX ? -1 : xr_to_pango (bb[X][1] - bb[X][0])); - pango_layout_set_wrap (font->layout, PANGO_WRAP_WORD); - - if (clip[H][0] != clip[H][1]) - { - cairo_save (xr->cairo); - if (!(options & TAB_ROTATE)) - xr_clip (xr, clip); - if (options & TAB_ROTATE) - { - cairo_translate (xr->cairo, - xr_to_pt (bb[H][0]), - xr_to_pt (bb[V][1] + xr->y)); - cairo_rotate (xr->cairo, -M_PI_2); - } - else - 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); - - /* If enabled, this draws a blue rectangle around the extents of each - line of text, which can be rather useful for debugging layout - issues. */ - if (0) - { - PangoLayoutIter *iter; - iter = pango_layout_get_iter (font->layout); - do - { - PangoRectangle extents; - - pango_layout_iter_get_line_extents (iter, &extents, NULL); - cairo_save (xr->cairo); - cairo_set_source_rgb (xr->cairo, 1, 0, 0); - dump_rectangle (xr, - pango_to_xr (extents.x), - pango_to_xr (extents.y) - xr->y, - pango_to_xr (extents.x + extents.width), - pango_to_xr (extents.y + extents.height) - xr->y); - cairo_restore (xr->cairo); - } - while (pango_layout_iter_next_line (iter)); - pango_layout_iter_free (iter); - } + xr_set_surface_size (xr->dest_surface, xr->output_type, + setup->paper[H] * 72.0, setup->paper[V] * 72.0); +} - cairo_restore (xr->cairo); - } +static void +xr_submit (struct output_driver *driver, const struct output_item *item) +{ + struct xr_driver *xr = xr_driver_cast (driver); - int size[TABLE_N_AXES]; - pango_layout_get_size (font->layout, &size[H], &size[V]); - int w = pango_to_xr (size[X]); - int h = pango_to_xr (size[Y]); - if (w > *widthp) - *widthp = w; - if (bb[V][0] + h >= bb[V][1] && !(options & TAB_ROTATE)) + if (item->type == OUTPUT_ITEM_PAGE_SETUP) { - PangoLayoutIter *iter; - int best = 0; - - /* Choose a breakpoint between lines instead of in the middle of one. */ - iter = pango_layout_get_iter (font->layout); - do - { - PangoRectangle extents; - int y0, y1; - int bottom; - - pango_layout_iter_get_line_extents (iter, NULL, &extents); - pango_layout_iter_get_line_yrange (iter, &y0, &y1); - extents.x = pango_to_xr (extents.x); - extents.y = pango_to_xr (y0); - extents.width = pango_to_xr (extents.width); - extents.height = pango_to_xr (y1 - y0); - bottom = bb[V][0] + extents.y + extents.height; - if (bottom < bb[V][1]) - { - if (brk && clip[H][0] != clip[H][1]) - best = bottom; - if (brk) - *brk = bottom; - } - else - break; - } - while (pango_layout_iter_next_line (iter)); - pango_layout_iter_free (iter); - - /* If enabled, draws a green line across the chosen breakpoint, which can - be useful for debugging issues with breaking. */ - if (0) - { - if (best) - dump_line (xr, -xr->left_margin, best, - xr->width + xr->right_margin, best, - RENDER_LINE_SINGLE, - &(struct cell_color) CELL_COLOR (0, 255, 0)); - } + if (!xr->pager) + xr_update_page_setup (driver, item->page_setup); + return; } - pango_layout_set_attributes (font->layout, NULL); - - if (font == &local_font) + if (!xr->pager) { - g_object_unref (G_OBJECT (font->layout)); - pango_font_description_free (font->desc); + xr->pager = xr_pager_create (xr->page_style, xr->fsm_style); + xr_pager_add_page (xr->pager, cairo_create (xr->drawing_surface)); } - return h; -} - -static void -xr_layout_cell (struct xr_driver *xr, const struct table_cell *cell, - int bb[TABLE_N_AXES][2], int clip[TABLE_N_AXES][2], - int *width, int *height, int *brk) -{ - *width = 0; - *height = 0; - - /* If enabled, draws a blue rectangle around the cell extents, which can be - useful for debugging layout. */ - if (0) + xr_pager_add_item (xr->pager, item); + while (xr_pager_needs_new_page (xr->pager)) { - if (clip[H][0] != clip[H][1]) - { - cairo_save (xr->cairo); - cairo_set_source_rgb (xr->cairo, 0, 0, 1); - dump_rectangle (xr, bb[H][0], bb[V][0], bb[H][1], bb[V][1]); - cairo_restore (xr->cairo); - } + xr_finish_page (xr); + xr_pager_add_page (xr->pager, cairo_create (xr->drawing_surface)); } - - if (brk) - *brk = bb[V][0]; - *height = xr_layout_cell_text (xr, cell, bb, clip, width, brk); } struct output_driver_factory pdf_driver_factory = @@ -1554,468 +634,13 @@ struct output_driver_factory ps_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, + NULL, }; - -/* GUI rendering helpers. */ - -struct xr_rendering - { - struct output_item *item; - - /* Table items. */ - struct render_pager *p; - struct xr_driver *xr; - }; - -#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, 1.0); - 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); - } -} - -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 (text), NULL, 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); - char *s = msg_to_string (message_item_get_msg (message_item)); - 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->p = render_pager_create (xr->params, to_table_item (item)); - } - else if (is_chart_item (item)) - { - r = xzalloc (sizeof *r); - r->item = output_item_ref (item); - } - else if (is_group_open_item (item)) - r = xr_rendering_create_text (xr, to_group_open_item (item)->command_name, - cr); - - return r; -} - -void -xr_rendering_destroy (struct xr_rendering *r) -{ - if (r) - { - output_item_unref (r->item); - render_pager_destroy (r->p); - free (r); - } -} - -void -xr_rendering_measure (const struct xr_rendering *r, int *wp, int *hp) -{ - int w, h; - - if (is_table_item (r->item)) - { - w = render_pager_get_size (r->p, H) / XR_POINT; - h = render_pager_get_size (r->p, V) / XR_POINT; - } - else - { - w = CHART_WIDTH; - h = CHART_HEIGHT; - } - - if (wp) - *wp = w; - if (hp) - *hp = h; -} - -static void xr_draw_chart (const struct chart_item *, cairo_t *, - double x, double y, double width, double height); - -/* Draws onto CR */ -void -xr_rendering_draw (struct xr_rendering *r, cairo_t *cr, - int x0, int y0, int x1, int y1) -{ - if (is_table_item (r->item)) - { - struct xr_driver *xr = r->xr; - - xr_set_cairo (xr, cr); - - render_pager_draw_region (r->p, x0 * XR_POINT, y0 * XR_POINT, - (x1 - x0) * XR_POINT, (y1 - y0) * XR_POINT); - } - else - xr_draw_chart (to_chart_item (r->item), cr, - 0, 0, CHART_WIDTH, CHART_HEIGHT); -} - -static 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_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); -} - -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) -{ - 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.png", (int) (number_pos - file_name_template), - file_name_template, number, number_pos + 1); - else - file_name = xasprintf ("%s.png", file_name_template); - - surface = cairo_image_surface_create (CAIRO_FORMAT_RGB24, width, length); - 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, 0.0, 0.0, width, length); - - 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)); - - cairo_destroy (cr); - 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, 0.0, 0.0, width, length); - - cairo_destroy (cr); - cairo_surface_destroy (surface); - - return file_name; -} - - - -struct xr_table_state - { - struct xr_render_fsm fsm; - struct render_pager *p; - }; - -static bool -xr_table_render (struct xr_render_fsm *fsm, struct xr_driver *xr) -{ - struct xr_table_state *ts = UP_CAST (fsm, struct xr_table_state, fsm); - - while (render_pager_has_next (ts->p)) - { - int used; - - used = render_pager_draw_next (ts->p, xr->length - xr->y); - if (!used) - { - assert (xr->y > 0); - return true; - } - else - xr->y += used; - } - return false; -} - -static void -xr_table_destroy (struct xr_render_fsm *fsm) -{ - struct xr_table_state *ts = UP_CAST (fsm, struct xr_table_state, fsm); - - render_pager_destroy (ts->p); - free (ts); -} - -static struct xr_render_fsm * -xr_render_table (struct xr_driver *xr, struct table_item *table_item) -{ - struct xr_table_state *ts; - - ts = xmalloc (sizeof *ts); - ts->fsm.render = xr_table_render; - ts->fsm.destroy = xr_table_destroy; - - if (xr->y > 0) - xr->y += xr->char_height; - - ts->p = render_pager_create (xr->params, table_item); - table_item_unref (table_item); - - return &ts->fsm; -} - -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); - - const int chart_height = 0.8 * (xr->length < xr->width ? xr->length : xr->width); - - if (xr->y > xr->length - chart_height) - return true; - - if (xr->cairo != NULL) - { - xr_draw_chart (cs->chart_item, xr->cairo, - 0.0, - xr_to_pt (xr->y), - xr_to_pt (xr->width), - xr_to_pt (chart_height)); - } - xr->y += chart_height; - - return false; -} - -static void -xr_chart_destroy (struct xr_render_fsm *fsm) -{ - struct xr_chart_state *cs = UP_CAST (fsm, struct xr_chart_state, fsm); - - chart_item_unref (cs->chart_item); - free (cs); -} - -static struct xr_render_fsm * -xr_render_chart (const struct chart_item *chart_item) -{ - 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; -} - -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 - }; - - return &eject_renderer; -} - -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); - - switch (type) - { - case TEXT_ITEM_PAGE_TITLE: - break; - - case TEXT_ITEM_EJECT_PAGE: - if (xr->y > 0) - return xr_render_eject (); - break; - - default: - return xr_render_table ( - xr, text_item_to_table_item (text_item_ref (text_item))); - } - - return NULL; -} - -static struct xr_render_fsm * -xr_render_message (struct xr_driver *xr, - const struct message_item *message_item) -{ - char *s = msg_to_string (message_item_get_msg (message_item)); - struct text_item *item = text_item_create (TEXT_ITEM_LOG, s); - free (s); - return xr_render_table (xr, text_item_to_table_item (item)); -} - -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, table_item_ref (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; -} - -bool -xr_draw_svg_file (struct xr_rendering *r, - const char *filename) -{ - int width, height; - g_assert (r); - xr_rendering_measure (r, &width, &height); - cairo_surface_t *surface = cairo_svg_surface_create (filename, width, height); - if (!surface) - { - g_error ("Could not create cairo svg surface with file %s", filename); - return FALSE; - } - cairo_t *cr = cairo_create (surface); - xr_rendering_draw (r, cr, 0, 0, width, height); - cairo_destroy (cr); - cairo_surface_destroy (surface); - return TRUE; -}