X-Git-Url: https://pintos-os.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=src%2Foutput%2Fcairo.c;h=e5ac93bcf0635a63d5c0d094fd39dbc62f647cc1;hb=29917c4f5908454803e663d2ad78bca4bc35e805;hp=43788cecf5fde9ddd8e141cadc21e37008f4db0d;hpb=5d626fa11b736925983b615d4e3fba000a0ce75b;p=pspp diff --git a/src/output/cairo.c b/src/output/cairo.c index 43788cecf5..e5ac93bcf0 100644 --- a/src/output/cairo.c +++ b/src/output/cairo.c @@ -16,51 +16,30 @@ #include -#include "output/cairo.h" - #include "libpspp/assertion.h" #include "libpspp/cast.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/message-item.h" #include "output/options.h" -#include "output/render.h" -#include "output/tab.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-strcase.h" -#include "gl/intprops.h" -#include "gl/minmax.h" #include "gl/xalloc.h" #include "gettext.h" @@ -70,7 +49,8 @@ #define H TABLE_HORZ #define V TABLE_VERT -/* The unit used for internal measurements is inch/(72 * XR_POINT). */ +/* The unit used for internal measurements is inch/(72 * XR_POINT). + (Thus, XR_POINT units represent one point.) */ #define XR_POINT PANGO_SCALE /* Conversions to and from points. */ @@ -80,107 +60,65 @@ 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); -} - /* Output types. */ enum xr_output_type { XR_PDF, XR_PS, - XR_SVG + XR_SVG, + XR_PNG }; -/* Cairo fonts. */ -enum xr_font_type +/* Cairo output driver. */ +struct xr_driver { - XR_FONT_PROPORTIONAL, - XR_FONT_EMPHASIS, - XR_FONT_FIXED, - XR_N_FONTS - }; + struct output_driver driver; -/* A font for use with Cairo. */ -struct xr_font - { - PangoFontDescription *desc; - PangoLayout *layout; - }; + enum xr_output_type output_type; + struct xr_fsm_style *fsm_style; + struct xr_page_style *page_style; + struct xr_pager *pager; + bool trim; -/* 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 *); + /* This is the surface where we're currently drawing. It is always + nonnull. - /* Destroys the output item. */ - void (*destroy) (struct xr_render_fsm *); - }; + 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. -/* Cairo output driver. */ -struct xr_driver - { - struct output_driver driver; + If 'trim' is false: - /* User parameters. */ - struct xr_font fonts[XR_N_FONTS]; + - For output to a PDF or PostScript file, it is the same pointer as + 'dest_surface'. - int width; /* Page width minus margins. */ - int length; /* Page length minus margins and header. */ + - For output to a PNG file, it is an image surface. - 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). */ + - For output to an SVG file, it is a recording surface. + */ + cairo_surface_t *drawing_surface; - int line_space; /* Space between lines. */ - int line_width; /* Width of lines. */ + /* - For output to a PDF or PostScript file, this is the surface for the + PDF or PostScript file where the output is ultimately going. - int min_break[TABLE_N_AXES]; /* Min cell size to break across pages. */ + - 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. - struct xr_color bg; /* Background color */ - struct xr_color fg; /* Foreground color */ + - 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; - /* Internal state. */ - struct render_params *params; - int char_width, char_height; - char *command_name; - char *title; - char *subtitle; - cairo_t *cairo; - int page_number; /* Current page number. */ - int x, y; - struct xr_render_fsm *fsm; - int nest; + /* 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 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. */ @@ -198,37 +136,6 @@ opt (struct output_driver *d, struct string_map *options, const char *key, return driver_option_get (d, options, key, default_value); } -/* Parse color information specified by KEY into {RED,GREEN,BLUE}. - Currently, the input string must be of the form "#RRRRGGGGBBBB" - Future implementations might allow things like "yellow" and - "sky-blue-ultra-brown" -*/ -void -parse_color (struct output_driver *d, struct string_map *options, - const char *key, const char *default_value, - struct xr_color *color) -{ - int red, green, blue; - char *string = parse_string (opt (d, options, key, default_value)); - - if (3 != sscanf (string, "#%04x%04x%04x", &red, &green, &blue)) - { - /* If the parsed option string fails, then try the default value */ - if ( 3 != sscanf (default_value, "#%04x%04x%04x", &red, &green, &blue)) - { - /* ... and if that fails set everything to zero */ - red = green = blue = 0; - } - } - - free (string); - - /* Convert 16 bit ints to float */ - color->red = red / (double) 0xFFFF; - color->green = green / (double) 0xFFFF; - color->blue = blue / (double) 0xFFFF; -} - static PangoFontDescription * parse_font (const char *font, int default_size, bool bold, bool italic) { @@ -276,221 +183,140 @@ 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]; + 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; - 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); - - xr->line_space = XR_POINT; - xr->line_width = XR_POINT / 2; - xr->page_number = 0; - - parse_color (d, o, "background-color", "#FFFFFFFFFFFF", &xr->bg); - parse_color (d, o, "foreground-color", "#000000000000", &xr->fg); - - /* 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; - /* 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; -} - -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); -} + 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); -} + struct cell_color fg = parse_color (opt (d, o, "foreground-color", "black")); -static bool -xr_set_cairo (struct xr_driver *xr, cairo_t *cairo) -{ - int i; + bool systemcolors = parse_boolean (opt (d, o, "systemcolors", "false")); - xr->cairo = cairo; + int object_spacing + = parse_dimension (opt (d, o, "object-spacing", NULL)) * scale; + if (object_spacing <= 0) + object_spacing = XR_POINT * 12; - cairo_set_line_width (xr->cairo, xr_to_pt (xr->line_width)); + const char *default_resolution = (output_type == XR_PNG ? "96" : "72"); + int font_resolution = parse_int (opt (d, o, "font-resolution", + default_resolution), 10, 1000); - xr->char_width = 0; - xr->char_height = 0; - for (i = 0; i < XR_N_FONTS; i++) - { - struct xr_font *font = &xr->fonts[i]; - int char_width, char_height; + xr->trim = parse_boolean (opt (d, o, "trim", "false")); - font->layout = pango_cairo_create_layout (cairo); - pango_layout_set_font_description (font->layout, font->desc); + /* 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"))); - pango_layout_set_text (font->layout, "0", 1); - pango_layout_get_size (font->layout, &char_width, &char_height); - xr->char_width = MAX (xr->char_width, pango_to_xr (char_width)); - xr->char_height = MAX (xr->char_height, pango_to_xr (char_height)); - } + xr->page_style = xmalloc (sizeof *xr->page_style); + *xr->page_style = (struct xr_page_style) { + .ref_cnt = 1, - 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 (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; - } + .margins = { + [H] = { margins[H][0], margins[H][1], }, + [V] = { margins[V][0], margins[V][1], }, + }, - for (i = 0; i < TABLE_N_AXES; i++) - xr->params->min_break[i] = xr->min_break[i]; - xr->params->supports_margins = true; - } + .initial_page_number = 1, + .include_outline = include_outline, + }; - cairo_set_source_rgb (xr->cairo, xr->fg.red, xr->fg.green, xr->fg.blue); + 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, + }; - return true; + return xr; } static struct output_driver * -xr_create (const char *file_name, enum settings_output_devices device_type, - struct string_map *o, enum xr_output_type file_type) -{ - enum { MIN_WIDTH = 3, MIN_LENGTH = 3 }; - struct xr_driver *xr; - cairo_surface_t *surface; - cairo_status_t status; - double width_pt, length_pt; - - xr = xr_allocate (file_name, device_type, o); - - width_pt = xr_to_pt (xr->width + xr->left_margin + xr->right_margin); - length_pt = xr_to_pt (xr->length + xr->top_margin + xr->bottom_margin); - if (file_type == XR_PDF) - surface = cairo_pdf_surface_create (file_name, width_pt, length_pt); - else if (file_type == XR_PS) - surface = cairo_ps_surface_create (file_name, width_pt, length_pt); - else if (file_type == XR_SVG) - surface = cairo_svg_surface_create (file_name, width_pt, length_pt); - else - NOT_REACHED (); - - status = cairo_surface_status (surface); - if (status != CAIRO_STATUS_SUCCESS) - { - msg (ME, _("error opening output file `%s': %s"), - file_name, cairo_status_to_string (status)); - cairo_surface_destroy (surface); - goto error; - } - - xr->cairo = cairo_create (surface); - cairo_surface_destroy (surface); - - if (!xr_set_cairo (xr, xr->cairo)) - goto error; - - cairo_save (xr->cairo); - xr_driver_next_page (xr, xr->cairo); - - if (xr->width / xr->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, - xr->width / xr->char_width); - goto error; +xr_create (struct file_handle *fh, enum settings_output_devices device_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, 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->length / xr->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, - xr->length / xr->char_height); - 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; error: + fh_unref (fh); output_driver_destroy (&xr->driver); return NULL; } @@ -499,1227 +325,322 @@ static struct output_driver * xr_pdf_create (struct file_handle *fh, enum settings_output_devices device_type, struct string_map *o) { - struct output_driver *od = xr_create (fh_get_file_name (fh), device_type, o, XR_PDF); - fh_unref (fh); - return od ; + return xr_create (fh, device_type, o, XR_PDF); } static struct output_driver * xr_ps_create (struct file_handle *fh, enum settings_output_devices device_type, struct string_map *o) { - struct output_driver *od = xr_create (fh_get_file_name (fh), device_type, o, XR_PS); - fh_unref (fh); - return od ; + return xr_create (fh, device_type, o, XR_PS); } static struct output_driver * xr_svg_create (struct file_handle *fh, enum settings_output_devices device_type, struct string_map *o) { - struct output_driver *od = xr_create (fh_get_file_name (fh), device_type, o, XR_SVG); - fh_unref (fh); - return od ; -} - -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_status_t status; - - cairo_surface_finish (cairo_get_target (xr->cairo)); - status = cairo_status (xr->cairo); - if (status != CAIRO_STATUS_SUCCESS) - msg (ME, _("error drawing output for %s driver: %s"), - output_driver_get_name (driver), - cairo_status_to_string (status)); - cairo_destroy (xr->cairo); - } - - for (i = 0; i < 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_submit (struct output_driver *driver, const struct output_item *output_item) -{ - struct xr_driver *xr = xr_driver_cast (driver); - - xr_driver_output_item (xr, output_item); - while (xr_driver_need_new_page (xr)) - { - cairo_restore (xr->cairo); - cairo_show_page (xr->cairo); - cairo_save (xr->cairo); - xr_driver_next_page (xr, xr->cairo); - } -} - -/* 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. */ - -/* Gives new page CAIRO to XR for output. */ -void -xr_driver_next_page (struct xr_driver *xr, cairo_t *cairo) -{ - cairo_save (cairo); - cairo_set_source_rgb (cairo, xr->bg.red, xr->bg.green, xr->bg.blue); - cairo_rectangle (cairo, 0, 0, xr->width, xr->length); - cairo_fill (cairo); - cairo_restore (cairo); - - cairo_translate (cairo, - xr_to_pt (xr->left_margin), - xr_to_pt (xr->top_margin)); - - xr->page_number++; - xr->cairo = cairo; - xr->x = xr->y = 0; - xr_driver_run_fsm (xr); + return xr_create (fh, device_type, o, XR_SVG); } -/* 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) +static struct output_driver * +xr_png_create (struct file_handle *fh, enum settings_output_devices device_type, + struct string_map *o) { - return xr->y == 0; + return xr_create (fh, device_type, o, XR_PNG); } static void -xr_driver_destroy_fsm (struct xr_driver *xr) +xr_set_surface_size (cairo_surface_t *surface, enum xr_output_type output_type, + double width, double height) { - if (xr->fsm != NULL) + switch (output_type) { - xr->fsm->destroy (xr->fsm); - xr->fsm = NULL; - } -} - -static void -xr_driver_run_fsm (struct xr_driver *xr) -{ - if (xr->fsm != NULL && !xr->fsm->render (xr->fsm, xr)) - xr_driver_destroy_fsm (xr); -} - -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 -dump_line (struct xr_driver *xr, int x0, int y0, int x1, int y1, int style, - const struct cell_color *color) -{ - cairo_new_path (xr->cairo); - cairo_set_source_rgb (xr->cairo, - color->r / 255.0, color->g / 255.0, color->b / 255.0); - 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->x), xr_to_pt (y0 + xr->y)); - cairo_line_to (xr->cairo, xr_to_pt (x1 + xr->x), xr_to_pt (y1 + xr->y)); - cairo_stroke (xr->cairo); -} - -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_move_to (xr->cairo, xr_to_pt (x0 + xr->x), xr_to_pt (y0 + xr->y)); - cairo_line_to (xr->cairo, xr_to_pt (x1 + xr->x), xr_to_pt (y0 + xr->y)); - cairo_line_to (xr->cairo, xr_to_pt (x1 + xr->x), xr_to_pt (y1 + xr->y)); - cairo_line_to (xr->cairo, xr_to_pt (x0 + xr->x), xr_to_pt (y1 + xr->y)); - cairo_close_path (xr->cairo); - cairo_stroke (xr->cairo); -} + case XR_PDF: + cairo_pdf_surface_set_size (surface, width, height); + break; -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->x), xr_to_pt (y0 + xr->y), - xr_to_pt (x1 - x0), xr_to_pt (y1 - y0)); - cairo_fill (xr->cairo); -} + case XR_PS: + cairo_ps_surface_set_size (surface, width, height); + break; -/* 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); + case XR_SVG: + case XR_PNG: + NOT_REACHED (); } } -/* 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) +xr_copy_surface (cairo_surface_t *dst, cairo_surface_t *src, + double x, double y) { - 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); - } + cairo_t *cr = cairo_create (dst); + cairo_set_source_surface (cr, src, x, y); + cairo_paint (cr); + cairo_destroy (cr); } 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); - } +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_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->margin[H][0] - + cell->style->margin[H][1]); - if (*max_width > 0) - *max_width += px_to_xr (cell->style->margin[H][0] - + cell->style->margin[H][1]); -} - -static int -xr_measure_cell_height (void *xr_, const struct table_cell *cell, int width) +xr_report_error (cairo_status_t status, const char *file_name) { - 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->margin[H][0] - + 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->margin[V][0] + cell->style->margin[V][1]); - return h; + if (status != CAIRO_STATUS_SUCCESS) + fprintf (stderr, "%s: %s\n", file_name, cairo_status_to_string (status)); } -static void xr_clip (struct xr_driver *, int clip[TABLE_N_AXES][2]); - static void -xr_draw_cell (void *xr_, const struct table_cell *cell, int color_idx, - int bb[TABLE_N_AXES][2], - int spill[TABLE_N_AXES][2], - int clip[TABLE_N_AXES][2]) +xr_finish_page (struct xr_driver *xr) { - struct xr_driver *xr = xr_; - int w, h, brk; + xr_pager_finish_page (xr->pager); - 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]; + /* For 'trim' true: - 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); - cairo_set_source_rgb (xr->cairo, - cell->style->bg[color_idx].r / 255., - cell->style->bg[color_idx].g / 255., - cell->style->bg[color_idx].b / 255.); - 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); - cairo_set_source_rgb (xr->cairo, - cell->style->fg[color_idx].r / 255., - cell->style->fg[color_idx].g / 255., - cell->style->fg[color_idx].b / 255.); - - for (int axis = 0; axis < TABLE_N_AXES; axis++) - { - bb[axis][0] += px_to_xr (cell->style->margin[axis][0]); - bb[axis][1] -= px_to_xr (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); -} + - If the destination is PDF or PostScript, set the dest surface size, copy + ink extent, show_page. -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->margin[H][0] - + 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->margin[V][0] - + 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] + xr->x); - double y0 = xr_to_pt (clip[V][0] + xr->y); - double x1 = xr_to_pt (clip[H][1] + xr->x); - double y1 = xr_to_pt (clip[V][1] + xr->y); + - If the destination is PNG, create image surface, copy ink extent, + cairo_surface_write_to_png(), destroy image surface. - cairo_rectangle (xr->cairo, x0, y0, x1 - x0, y1 - y0); - cairo_clip (xr->cairo); - } -} + - If the destination is SVG, create svg surface, copy ink extent, close. -static void -add_attr_with_start (PangoAttrList *list, PangoAttribute *attr, guint start_index) -{ - attr->start_index = start_index; - pango_attr_list_insert (list, attr); -} - -static int -xr_layout_cell_text (struct xr_driver *xr, - const struct cell_contents *contents, - const struct cell_style *style, - int bb[TABLE_N_AXES][2], int clip[TABLE_N_AXES][2], - int *widthp, int *brk) -{ - unsigned int options = contents->options; - size_t length; - int w, h; - - struct xr_font *font = (options & TAB_FIX ? &xr->fonts[XR_FONT_FIXED] - : options & TAB_EMPH ? &xr->fonts[XR_FONT_EMPHASIS] - : &xr->fonts[XR_FONT_PROPORTIONAL]); - struct xr_font local_font; - if (style->font) - { - PangoFontDescription *desc = parse_font ( - style->font, - style->font_size ? style->font_size * 1000 * 72 / 128 : 10000, - style->bold, style->italic); - if (desc) - { - PangoLayout *layout = pango_cairo_create_layout (xr->cairo); - pango_layout_set_font_description (layout, desc); + then destroy drawing_surface and make a new one. - local_font.desc = desc; - local_font.layout = layout; - font = &local_font; - } - } + For 'trim' false: - int footnote_adjustment; - if (contents->n_footnotes == 0) - footnote_adjustment = 0; - else if (contents->n_footnotes == 1 && (options & TAB_HALIGN) == TAB_RIGHT) - { - PangoAttrList *attrs; + - If the destination is PDF or PostScript, show_page. - const char *marker = contents->footnotes[0]->marker; - pango_layout_set_text (font->layout, marker, strlen (marker)); + - If the destination is PNG, cairo_surface_write_to_png(), destroy image + surface, create new image surface. - attrs = pango_attr_list_new (); - pango_attr_list_insert (attrs, pango_attr_rise_new (7000)); - pango_layout_set_attributes (font->layout, attrs); - pango_attr_list_unref (attrs); + - If the destination is SVG, create svg surface, copy whole thing, close. - pango_layout_get_size (font->layout, &w, &h); - footnote_adjustment = MIN (w, px_to_xr (style->margin[H][1])); - } - else - footnote_adjustment = px_to_xr (style->margin[H][1]); + */ + 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)); - length = strlen (contents->text); - if (footnote_adjustment) - { - PangoAttrList *attrs; - struct string s; - - bb[H][1] += footnote_adjustment; - - ds_init_empty (&s); - ds_extend (&s, length + contents->n_footnotes * 10); - ds_put_cstr (&s, contents->text); - cell_contents_format_footnote_markers (contents, &s); - pango_layout_set_text (font->layout, ds_cstr (&s), ds_length (&s)); - ds_destroy (&s); - - attrs = pango_attr_list_new (); - if (style->underline) - pango_attr_list_insert (attrs, pango_attr_underline_new ( - PANGO_UNDERLINE_SINGLE)); - add_attr_with_start (attrs, pango_attr_rise_new (7000), length); - add_attr_with_start ( - attrs, pango_attr_font_desc_new (font->desc), length); - pango_layout_set_attributes (font->layout, attrs); - pango_attr_list_unref (attrs); - } - else - { - pango_layout_set_text (font->layout, contents->text, -1); - - if (style->underline) + 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++) { - PangoAttrList *attrs = pango_attr_list_new (); - pango_attr_list_insert (attrs, pango_attr_underline_new ( - PANGO_UNDERLINE_SINGLE)); - pango_layout_set_attributes (font->layout, attrs); - pango_attr_list_unref (attrs); + double scale = XR_POINT; + size[a] += (margins[a][0] + margins[a][1]) / scale; + ofs[a] = -ofs[a] + margins[a][0] / scale; } - } - pango_layout_set_alignment ( - font->layout, - ((options & TAB_HALIGN) == TAB_RIGHT ? PANGO_ALIGN_RIGHT - : (options & TAB_HALIGN) == TAB_LEFT ? PANGO_ALIGN_LEFT - : PANGO_ALIGN_CENTER)); - pango_layout_set_width ( - font->layout, - bb[H][1] == INT_MAX ? -1 : xr_to_pango (bb[H][1] - bb[H][0])); - pango_layout_set_wrap (font->layout, PANGO_WRAP_WORD); - - if (clip[H][0] != clip[H][1]) - { - cairo_save (xr->cairo); - xr_clip (xr, clip); - cairo_translate (xr->cairo, - xr_to_pt (bb[H][0] + xr->x), - 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) + switch (xr->output_type) { - 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) - xr->x, - pango_to_xr (extents.y) - xr->y, - pango_to_xr (extents.x + extents.width) - xr->x, - 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); + 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; } - cairo_restore (xr->cairo); + /* 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] }); } - - pango_layout_get_size (font->layout, &w, &h); - w = pango_to_xr (w); - h = pango_to_xr (h); - if (w > *widthp) - *widthp = w; - if (bb[V][0] + h >= bb[V][1]) + else { - PangoLayoutIter *iter; - int best UNUSED = 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) + switch (xr->output_type) { - if (best && !xr->nest) - dump_line (xr, -xr->left_margin, best, - xr->width + xr->right_margin, best, - RENDER_LINE_SINGLE, &CELL_COLOR (0, 255, 0)); + 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; } } - pango_layout_set_attributes (font->layout, NULL); - - if (font == &local_font) - { - g_object_unref (G_OBJECT (font->layout)); - pango_font_description_free (font->desc); - } - - return bb[V][0] + h; + if (file_name != xr->driver.name) + free (file_name); } 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) -{ - int bb[TABLE_N_AXES][2]; - size_t i; - - *width = 0; - *height = 0; - if (brk) - *brk = 0; - - memcpy (bb, bb_, sizeof bb); - - /* If enabled, draws a blue rectangle around the cell extents, which can be - useful for debugging layout. */ - if (0) - { - if (clip[H][0] != clip[H][1]) - { - int offset = (xr->nest) * XR_POINT; - - cairo_save (xr->cairo); - cairo_set_source_rgb (xr->cairo, 0, 0, 1); - dump_rectangle (xr, - bb[H][0] + offset, bb[V][0] + offset, - bb[H][1] - offset, bb[V][1] - offset); - cairo_restore (xr->cairo); - } - } - - for (i = 0; i < cell->n_contents && bb[V][0] < bb[V][1]; i++) - { - const struct cell_contents *contents = &cell->contents[i]; - - if (brk) - *brk = bb[V][0]; - if (i > 0) - { - bb[V][0] += xr->char_height / 2; - if (bb[V][0] >= bb[V][1]) - break; - if (brk) - *brk = bb[V][0]; - } - - bb[V][0] = xr_layout_cell_text (xr, contents, cell->style, bb, clip, - width, brk); - } - *height = bb[V][0] - bb_[V][0]; -} - -struct output_driver_factory pdf_driver_factory = - { "pdf", "pspp.pdf", xr_pdf_create }; -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 }; - -static const struct output_driver_class cairo_driver_class = -{ - "cairo", - xr_destroy, - xr_submit, - xr_flush, -}; - -/* 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); - if (!xr_set_cairo (xr, cairo)) - { - output_driver_destroy (&xr->driver); - return NULL; - } - return xr; -} - -/* Destroy XR, which should have been created with xr_driver_create(). Any - cairo_t added to XR is not destroyed, because it is owned by the client. */ -void -xr_driver_destroy (struct xr_driver *xr) -{ - if (xr != NULL) - { - xr->cairo = NULL; - output_driver_destroy (&xr->driver); - } -} - -static struct xr_rendering * -xr_rendering_create_text (struct xr_driver *xr, const char *text, cairo_t *cr) -{ - struct table_item *table_item; - struct xr_rendering *r; - - table_item = table_item_create (table_from_string (TAB_LEFT, text), - NULL, NULL); - r = xr_rendering_create (xr, &table_item->output_item, cr); - table_item_unref (table_item); - - return r; -} - -void -xr_rendering_apply_options (struct xr_rendering *xr, struct string_map *o) -{ - if (is_table_item (xr->item)) - apply_options (xr->xr, o); -} - -struct xr_rendering * -xr_rendering_create (struct xr_driver *xr, const struct output_item *item, - cairo_t *cr) +xr_destroy (struct output_driver *driver) { - struct xr_rendering *r = NULL; + struct xr_driver *xr = xr_driver_cast (driver); - if (is_text_item (item)) - r = xr_rendering_create_text (xr, text_item_get_text (to_text_item (item)), - cr); - else if (is_message_item (item)) - { - const struct message_item *message_item = to_message_item (item); - const struct msg *msg = message_item_get_msg (message_item); - char *s = msg_to_string (msg, NULL); - r = xr_rendering_create_text (xr, s, cr); - free (s); - } - else if (is_table_item (item)) - { - r = xzalloc (sizeof *r); - r->item = output_item_ref (item); - r->xr = xr; - xr_set_cairo (xr, cr); - r->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); - } + if (xr->pager) + xr_finish_page (xr); - return r; -} + xr_pager_destroy (xr->pager); -void -xr_rendering_destroy (struct xr_rendering *r) -{ - if (r) + if (xr->drawing_surface && xr->drawing_surface != xr->dest_surface) + cairo_surface_destroy (xr->drawing_surface); + if (xr->dest_surface) { - output_item_unref (r->item); - render_pager_destroy (r->p); - free (r); - } -} - -void -xr_rendering_measure (struct xr_rendering *r, int *w, int *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; + 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); } -} - -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_all (struct xr_rendering *r, cairo_t *cr) -{ - if (is_table_item (r->item)) - { - struct xr_driver *xr = r->xr; - - xr_set_cairo (xr, cr); - - render_pager_draw (r->p); - } - else - xr_draw_chart (to_chart_item (r->item), cr, - 0, 0, CHART_WIDTH, CHART_HEIGHT); + xr_page_style_unref (xr->page_style); + xr_fsm_style_unref (xr->fsm_style); + free (xr); } static void -xr_draw_chart (const struct chart_item *chart_item, cairo_t *cr, - double x, double y, double width, double height) +xr_update_page_setup (struct output_driver *driver, + const struct page_setup *setup) { - 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 xr_color *fg, - const struct xr_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", (int) (number_pos - file_name_template), - file_name_template, number, number_pos + 1); - else - file_name = xstrdup (file_name_template); - - surface = cairo_image_surface_create (CAIRO_FORMAT_RGB24, width, length); - cr = cairo_create (surface); - - cairo_set_source_rgb (cr, bg->red, bg->green, bg->blue); - cairo_paint (cr); + struct xr_driver *xr = xr_driver_cast (driver); - cairo_set_source_rgb (cr, fg->red, fg->green, fg->blue); + const double scale = 72 * XR_POINT; - xr_draw_chart (item, cr, 0.0, 0.0, width, length); + int swap = setup->orientation == PAGE_LANDSCAPE; + enum table_axis h = H ^ swap; + enum table_axis v = V ^ swap; - 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)); + 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, - cairo_destroy (cr); - cairo_surface_destroy (surface); + .margins = { + [H] = { setup->margins[h][0] * scale, setup->margins[h][1] * scale }, + [V] = { setup->margins[v][0] * scale, setup->margins[v][1] * scale }, + }, - return file_name; -} - -struct xr_table_state - { - struct xr_render_fsm fsm; - struct table_item *table_item; - struct render_pager *p; + .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); -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; + xr_set_surface_size (xr->dest_surface, xr->output_type, + setup->paper[H] * 72.0, setup->paper[V] * 72.0); } static void -xr_table_destroy (struct xr_render_fsm *fsm) +xr_submit (struct output_driver *driver, const struct output_item *item) { - struct xr_table_state *ts = UP_CAST (fsm, struct xr_table_state, fsm); - - table_item_unref (ts->table_item); - render_pager_destroy (ts->p); - free (ts); -} - -static struct xr_render_fsm * -xr_render_table (struct xr_driver *xr, const 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; - ts->table_item = table_item_ref (table_item); - - if (xr->y > 0) - xr->y += xr->char_height; - - ts->p = render_pager_create (xr->params, 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; + struct xr_driver *xr = xr_driver_cast (driver); - if (xr->cairo != NULL) + if (item->type == OUTPUT_ITEM_PAGE_SETUP) { - 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)); + if (!xr->pager) + xr_update_page_setup (driver, item->page_setup); + return; } - 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 = + if (!xr->pager) { - xr_eject_render, - xr_eject_destroy - }; - - return &eject_renderer; -} - -static struct xr_render_fsm * -xr_create_text_renderer (struct xr_driver *xr, const struct text_item *item) -{ - struct tab_table *tab = tab_create (1, 1); - - struct cell_style *style = pool_alloc (tab->container, sizeof *style); - *style = (struct cell_style) CELL_STYLE_INITIALIZER; - if (item->font) - style->font = pool_strdup (tab->container, item->font); - style->font_size = item->font_size; - style->bold = item->bold; - style->italic = item->italic; - style->underline = item->underline; - tab->styles[0] = style; - - tab_text (tab, 0, 0, TAB_LEFT, text_item_get_text (item)); - struct table_item *table_item = table_item_create (&tab->table, NULL, NULL); - struct xr_render_fsm *fsm = xr_render_table (xr, table_item); - table_item_unref (table_item); - - return fsm; -} - -static struct xr_render_fsm * -xr_render_text (struct xr_driver *xr, const struct text_item *text_item) -{ - enum text_item_type type = text_item_get_type (text_item); - const char *text = text_item_get_text (text_item); + xr->pager = xr_pager_create (xr->page_style, xr->fsm_style); + xr_pager_add_page (xr->pager, cairo_create (xr->drawing_surface)); + } - switch (type) + xr_pager_add_item (xr->pager, item); + while (xr_pager_needs_new_page (xr->pager)) { - case TEXT_ITEM_TITLE: - free (xr->title); - xr->title = xstrdup (text); - break; - - case TEXT_ITEM_SUBTITLE: - free (xr->subtitle); - xr->subtitle = xstrdup (text); - break; - - case TEXT_ITEM_COMMAND_CLOSE: - break; - - case TEXT_ITEM_BLANK_LINE: - if (xr->y > 0) - xr->y += xr->char_height; - break; - - case TEXT_ITEM_EJECT_PAGE: - if (xr->y > 0) - return xr_render_eject (); - break; - - default: - return xr_create_text_renderer (xr, text_item); + xr_finish_page (xr); + xr_pager_add_page (xr->pager, cairo_create (xr->drawing_surface)); } - - return NULL; -} - -static struct xr_render_fsm * -xr_render_message (struct xr_driver *xr, - const struct message_item *message_item) -{ - const struct msg *msg = message_item_get_msg (message_item); - char *s = msg_to_string (msg, message_item->command_name); - struct text_item *item = text_item_create (TEXT_ITEM_PARAGRAPH, s); - free (s); - struct xr_render_fsm *fsm = xr_create_text_renderer (xr, item); - text_item_unref (item); - - return fsm; } + +struct output_driver_factory pdf_driver_factory = + { "pdf", "pspp.pdf", xr_pdf_create }; +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 struct xr_render_fsm * -xr_render_output_item (struct xr_driver *xr, - const struct output_item *output_item) +static const struct output_driver_class cairo_driver_class = { - if (is_table_item (output_item)) - return xr_render_table (xr, to_table_item (output_item)); - else if (is_chart_item (output_item)) - return xr_render_chart (to_chart_item (output_item)); - else if (is_text_item (output_item)) - return xr_render_text (xr, to_text_item (output_item)); - else if (is_message_item (output_item)) - return xr_render_message (xr, to_message_item (output_item)); - else - return NULL; -} + "cairo", + xr_destroy, + xr_submit, + NULL, +};