#include <config.h>
-#include <output/cairo.h>
-
-#include <libpspp/assertion.h>
-#include <libpspp/cast.h>
-#include <libpspp/start-date.h>
-#include <libpspp/str.h>
-#include <libpspp/string-map.h>
-#include <libpspp/version.h>
-#include <output/cairo-chart.h>
-#include <output/chart-item-provider.h>
-#include <output/charts/boxplot.h>
-#include <output/charts/np-plot.h>
-#include <output/charts/piechart.h>
-#include <output/charts/plot-hist.h>
-#include <output/charts/roc-chart.h>
-#include <output/charts/scree.h>
-#include <output/driver-provider.h>
-#include <output/options.h>
-#include <output/render.h>
-#include <output/tab.h>
-#include <output/table-item.h>
-#include <output/table.h>
-#include <output/text-item.h>
+#include "output/cairo.h"
+
+#include "libpspp/assertion.h"
+#include "libpspp/cast.h"
+#include "libpspp/message.h"
+#include "libpspp/start-date.h"
+#include "libpspp/str.h"
+#include "libpspp/string-map.h"
+#include "libpspp/version.h"
+#include "output/cairo-chart.h"
+#include "output/chart-item-provider.h"
+#include "output/charts/boxplot.h"
+#include "output/charts/np-plot.h"
+#include "output/charts/piechart.h"
+#include "output/charts/plot-hist.h"
+#include "output/charts/roc-chart.h"
+#include "output/charts/scree.h"
+#include "output/driver-provider.h"
+#include "output/message-item.h"
+#include "output/options.h"
+#include "output/render.h"
+#include "output/tab.h"
+#include "output/table-item.h"
+#include "output/table.h"
+#include "output/text-item.h"
#include <cairo/cairo-pdf.h>
#include <cairo/cairo-ps.h>
#include <pango/pangocairo.h>
#include <stdlib.h>
-#include "error.h"
-#include "intprops.h"
-#include "minmax.h"
-#include "xalloc.h"
+#include "gl/error.h"
+#include "gl/intprops.h"
+#include "gl/minmax.h"
+#include "gl/xalloc.h"
#include "gettext.h"
#define _(msgid) gettext (msgid)
/* A font for use with Cairo. */
struct xr_font
{
- char *string;
PangoFontDescription *desc;
PangoLayout *layout;
- PangoFontMetrics *metrics;
+ };
+
+/* 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 *);
};
/* Cairo output driver. */
struct output_driver driver;
/* User parameters. */
- bool headers; /* Draw headers at top of page? */
-
struct xr_font fonts[XR_N_FONTS];
- int font_height; /* In XR units. */
int width; /* Page width minus margins. */
int length; /* Page length minus margins and header. */
int line_space; /* Space between lines. */
int line_width; /* Width of lines. */
- enum xr_output_type file_type; /* Type of output file. */
-
/* Internal state. */
struct render_params *params;
+ int char_width, char_height;
+ char *command_name;
char *title;
char *subtitle;
cairo_t *cairo;
int page_number; /* Current page number. */
int y;
+ struct xr_render_fsm *fsm;
};
static const struct output_driver_class cairo_driver_class;
-static void xr_show_page (struct xr_driver *);
-static void draw_headers (struct xr_driver *);
-
-static bool load_font (struct xr_driver *, struct xr_font *);
-static void free_font (struct xr_font *);
+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]);
static void xr_draw_cell (void *, const struct table_cell *,
int bb[TABLE_N_AXES][2],
int clip[TABLE_N_AXES][2]);
+
+static struct xr_render_fsm *xr_render_output_item (
+ struct xr_driver *, const struct output_item *);
\f
-/* Driver initialization. */
+/* Output driver basics. */
static struct xr_driver *
xr_driver_cast (struct output_driver *driver)
return driver_option_get (d, options, key, default_value);
}
+static PangoFontDescription *
+parse_font (struct output_driver *d, struct string_map *options,
+ const char *key, const char *default_value,
+ int default_points)
+{
+ PangoFontDescription *desc;
+ char *string;
+
+ /* Parse KEY as a font description. */
+ string = parse_string (opt (d, options, key, default_value));
+ desc = pango_font_description_from_string (string);
+ if (desc == NULL)
+ {
+ error (0, 0, _("`%s': bad font specification"), string);
+
+ /* Fall back to DEFAULT_VALUE, which had better be a valid font
+ description. */
+ desc = pango_font_description_from_string (default_value);
+ assert (desc != NULL);
+ }
+ free (string);
+
+ /* If the font description didn't include an explicit font size, then set it
+ to DEFAULT_POINTS. */
+ if (!(pango_font_description_get_set_fields (desc) & PANGO_FONT_MASK_SIZE))
+ pango_font_description_set_size (desc,
+ default_points / 1000.0 * PANGO_SCALE);
+
+ return desc;
+}
+
static struct xr_driver *
xr_allocate (const char *name, int device_type, struct string_map *o)
{
+ int paper_width, paper_length;
struct output_driver *d;
struct xr_driver *xr;
+ int font_points;
xr = xzalloc (sizeof *xr);
d = &xr->driver;
output_driver_init (d, &cairo_driver_class, name, device_type);
- xr->headers = true;
- xr->font_height = XR_POINT * 10;
- xr->fonts[XR_FONT_FIXED].string
- = parse_string (opt (d, o, "fixed-font", "monospace"));
- xr->fonts[XR_FONT_PROPORTIONAL].string
- = parse_string (opt (d, o, "prop-font", "serif"));
- xr->fonts[XR_FONT_EMPHASIS].string
- = parse_string (opt (d, o, "emph-font", "serif italic"));
+
+ font_points = parse_int (opt (d, o, "font-size", "10000"),
+ 1000, 1000000);
+ xr->fonts[XR_FONT_FIXED].desc = parse_font (d, o, "fixed-font", "monospace",
+ font_points);
+ xr->fonts[XR_FONT_PROPORTIONAL].desc = parse_font (d, o, "prop-font",
+ "serif", font_points);
+ xr->fonts[XR_FONT_EMPHASIS].desc = parse_font (d, o, "emph-font",
+ "serif italic", font_points);
+
xr->line_gutter = XR_POINT;
xr->line_space = XR_POINT;
xr->line_width = XR_POINT / 2;
- xr->page_number = 1;
+ xr->page_number = 0;
+
+ parse_paper_size (opt (d, o, "paper-size", ""), &paper_width, &paper_length);
+ xr->left_margin = parse_dimension (opt (d, o, "left-margin", ".5in"));
+ xr->right_margin = parse_dimension (opt (d, o, "right-margin", ".5in"));
+ xr->top_margin = parse_dimension (opt (d, o, "top-margin", ".5in"));
+ xr->bottom_margin = parse_dimension (opt (d, o, "bottom-margin", ".5in"));
+
+ xr->width = paper_width - xr->left_margin - xr->right_margin;
+ xr->length = paper_length - xr->top_margin - xr->bottom_margin;
return xr;
}
+static bool
+xr_is_72dpi (cairo_t *cr)
+{
+ cairo_surface_type_t type;
+ cairo_surface_t *surface;
+
+ surface = cairo_get_target (cr);
+ type = cairo_surface_get_type (surface);
+ return type == CAIRO_SURFACE_TYPE_PDF || type == CAIRO_SURFACE_TYPE_PS;
+}
+
static bool
xr_set_cairo (struct xr_driver *xr, cairo_t *cairo)
{
+ PangoContext *context;
+ PangoFontMap *map;
int i;
xr->cairo = cairo;
cairo_set_line_width (xr->cairo, xr_to_pt (xr->line_width));
+ map = pango_cairo_font_map_get_default ();
+ context = pango_cairo_font_map_create_context (PANGO_CAIRO_FONT_MAP (map));
+ if (xr_is_72dpi (cairo))
+ {
+ /* Pango seems to always scale fonts according to the DPI specified
+ in the font map, even if the surface has a real DPI. The default
+ DPI is 96, so on a 72 DPI device fonts end up being 96/72 = 133%
+ of their desired size. We deal with this by fixing the resolution
+ here. Presumably there is a better solution, but what? */
+ pango_cairo_context_set_resolution (context, 72.0);
+ }
+
+ xr->char_width = 0;
+ xr->char_height = 0;
for (i = 0; i < XR_N_FONTS; i++)
- if (!load_font (xr, &xr->fonts[i]))
- return false;
+ {
+ struct xr_font *font = &xr->fonts[i];
+ int char_width, char_height;
+
+ font->layout = pango_layout_new (context);
+ pango_layout_set_font_description (font->layout, font->desc);
+
+ pango_layout_set_text (font->layout, "0", 1);
+ pango_layout_get_size (font->layout, &char_width, &char_height);
+ xr->char_width = MAX (xr->char_width, char_width);
+ xr->char_height = MAX (xr->char_height, char_height);
+ }
+
+ g_object_unref (G_OBJECT (context));
if (xr->params == NULL)
{
xr->params->aux = xr;
xr->params->size[H] = xr->width;
xr->params->size[V] = xr->length;
- xr->params->font_size[H] = xr->font_height / 2; /* XXX */
- xr->params->font_size[V] = xr->font_height;
+ xr->params->font_size[H] = xr->char_width;
+ xr->params->font_size[V] = xr->char_height;
single_width = 2 * xr->line_gutter + xr->line_width;
double_width = 2 * xr->line_gutter + xr->line_space + 2 * xr->line_width;
cairo_surface_t *surface;
cairo_status_t status;
double width_pt, length_pt;
- int paper_width, paper_length;
xr = xr_allocate (file_name, device_type, o);
d = &xr->driver;
- xr->headers = parse_boolean (opt (d, o, "headers", "true"));
-
- xr->file_type = file_type;
-
- parse_paper_size (opt (d, o, "paper-size", ""), &paper_width, &paper_length);
- xr->left_margin = parse_dimension (opt (d, o, "left-margin", ".5in"));
- xr->right_margin = parse_dimension (opt (d, o, "right-margin", ".5in"));
- xr->top_margin = parse_dimension (opt (d, o, "top-margin", ".5in"));
- xr->bottom_margin = parse_dimension (opt (d, o, "bottom-margin", ".5in"));
-
- if (xr->headers)
- xr->top_margin += 3 * xr->font_height;
- xr->width = paper_width - xr->left_margin - xr->right_margin;
- xr->length = paper_length - xr->top_margin - xr->bottom_margin;
-
- width_pt = paper_width / 1000.0;
- length_pt = paper_length / 1000.0;
- if (xr->file_type == XR_PDF)
+ width_pt = (xr->width + xr->left_margin + xr->right_margin) / 1000.0;
+ length_pt = (xr->length + xr->top_margin + xr->bottom_margin) / 1000.0;
+ if (file_type == XR_PDF)
surface = cairo_pdf_surface_create (file_name, width_pt, length_pt);
- else if (xr->file_type == XR_PS)
+ else if (file_type == XR_PS)
surface = cairo_ps_surface_create (file_name, width_pt, length_pt);
- else if (xr->file_type == XR_SVG)
+ else if (file_type == XR_SVG)
surface = cairo_svg_surface_create (file_name, width_pt, length_pt);
else
NOT_REACHED ();
status = cairo_surface_status (surface);
if (status != CAIRO_STATUS_SUCCESS)
{
- error (0, 0, _("opening output file \"%s\": %s"),
+ error (0, 0, _("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);
- cairo_translate (xr->cairo,
- xr_to_pt (xr->left_margin),
- xr_to_pt (xr->top_margin));
-
if (!xr_set_cairo (xr, xr->cairo))
goto error;
- if (xr->width / (xr->font_height / 2) < MIN_WIDTH)
+ cairo_save (xr->cairo);
+ xr_driver_next_page (xr, xr->cairo);
+
+ if (xr->width / xr->char_width < MIN_WIDTH)
{
error (0, 0, _("The defined page is not wide enough to hold at least %d "
"characters in the default font. In fact, there's only "
"room for %d characters."),
MIN_WIDTH,
- xr->width / (xr->font_height / 2));
+ xr->width / xr->char_width);
goto error;
}
- if (xr->length / xr->font_height < MIN_LENGTH)
+ if (xr->length / xr->char_height < MIN_LENGTH)
{
- error (0, 0, _("The defined page is not long "
- "enough to hold margins and headers, plus least %d "
- "lines of the default fonts. In fact, there's only "
+ error (0, 0, _("The defined page is not long enough to hold at least %d "
+ "lines in the default font. In fact, there's only "
"room for %d lines."),
MIN_LENGTH,
- xr->length / xr->font_height);
+ xr->length / xr->char_height);
goto error;
}
struct xr_driver *xr = xr_driver_cast (driver);
size_t i;
+ xr_driver_destroy_fsm (xr);
+
if (xr->cairo != NULL)
{
cairo_status_t status;
- if (xr->y > 0)
- xr_show_page (xr);
-
cairo_surface_finish (cairo_get_target (xr->cairo));
status = cairo_status (xr->cairo);
if (status != CAIRO_STATUS_SUCCESS)
cairo_destroy (xr->cairo);
}
+ free (xr->command_name);
for (i = 0; i < XR_N_FONTS; i++)
- free_font (&xr->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);
}
xr_submit (struct output_driver *driver, const struct output_item *output_item)
{
struct xr_driver *xr = xr_driver_cast (driver);
- if (is_table_item (output_item))
+
+ xr_driver_output_item (xr, output_item);
+ while (xr_driver_need_new_page (xr))
{
- struct table_item *table_item = to_table_item (output_item);
- struct render_break x_break;
- struct render_page *page;
- int caption_height;
+ cairo_restore (xr->cairo);
+ cairo_show_page (xr->cairo);
+ cairo_save (xr->cairo);
+ xr_driver_next_page (xr, xr->cairo);
+ }
+}
+\f
+/* Functions for rendering a series of output items to a series of Cairo
+ contexts, with pagination.
- if (xr->y > 0)
- xr->y += xr->font_height;
+ Used by PSPPIRE for printing, and by the basic Cairo output driver above as
+ its underlying implementation.
- page = xr_render_table_item (xr, table_item, &caption_height);
- xr->params->size[V] = xr->length - caption_height;
- for (render_break_init (&x_break, page, H);
- render_break_has_next (&x_break); )
- {
- struct render_page *x_slice;
- struct render_break y_break;
+ See the big comment in cairo.h for intended usage. */
- x_slice = render_break_next (&x_break, xr->width);
- for (render_break_init (&y_break, x_slice, V);
- render_break_has_next (&y_break); )
- {
- int space = xr->length - xr->y;
- struct render_page *y_slice;
-
- /* XXX doesn't allow for caption or space between segments */
- if (render_break_next_size (&y_break) > space)
- {
- assert (xr->y > 0);
- xr_show_page (xr);
- continue;
- }
-
- y_slice = render_break_next (&y_break, space);
- if (caption_height)
- {
- struct table_cell cell;
- int bb[TABLE_N_AXES][2];
-
- xr_init_caption_cell (table_item_get_caption (table_item),
- &cell);
- bb[H][0] = 0;
- bb[H][1] = xr->width;
- bb[V][0] = 0;
- bb[V][1] = caption_height;
- xr_draw_cell (xr, &cell, bb, bb);
- xr->y += caption_height;
- caption_height = 0;
- }
-
- render_page_draw (y_slice);
- xr->y += render_page_get_size (y_slice, V);
- render_page_unref (y_slice);
- }
- render_break_destroy (&y_break);
- }
- render_break_destroy (&x_break);
- }
- else if (is_chart_item (output_item))
- {
- if (xr->y > 0)
- xr_show_page (xr);
- xr_draw_chart (to_chart_item (output_item), xr->cairo, 0.0, 0.0,
- xr_to_pt (xr->width), xr_to_pt (xr->length));
- xr_show_page (xr);
- }
- else if (is_text_item (output_item))
- {
- const struct text_item *text_item = to_text_item (output_item);
- enum text_item_type type = text_item_get_type (text_item);
- const char *text = text_item_get_text (text_item);
+/* Gives new page CAIRO to XR for output. CAIRO may be null to skip actually
+ rendering the page (which might be useful to find out how many pages an
+ output document has without actually rendering it). */
+void
+xr_driver_next_page (struct xr_driver *xr, cairo_t *cairo)
+{
+ if (cairo != NULL)
+ cairo_translate (cairo,
+ xr_to_pt (xr->left_margin),
+ xr_to_pt (xr->top_margin));
- switch (type)
- {
- 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->font_height;
- break;
-
- case TEXT_ITEM_EJECT_PAGE:
- if (xr->y > 0)
- xr_show_page (xr);
- break;
-
- default:
- {
- struct table_item *item;
-
- item = table_item_create (table_from_string (TAB_LEFT, text),
- NULL);
- xr_submit (&xr->driver, &item->output_item);
- table_item_unref (item);
- }
- break;
- }
+ xr->page_number++;
+ xr->cairo = cairo;
+ xr->y = 0;
+ 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_show_page (struct xr_driver *xr)
+xr_driver_destroy_fsm (struct xr_driver *xr)
{
- if (xr->headers)
+ if (xr->fsm != NULL)
{
- xr->y = 0;
- draw_headers (xr);
+ xr->fsm->destroy (xr->fsm);
+ xr->fsm = NULL;
}
- cairo_show_page (xr->cairo);
+}
- xr->page_number++;
- xr->y = 0;
+static void
+xr_driver_run_fsm (struct xr_driver *xr)
+{
+ if (xr->fsm != NULL && !xr->fsm->render (xr->fsm, xr))
+ xr_driver_destroy_fsm (xr);
}
\f
static void
xr_layout_cell (xr, cell, bb, clip, PANGO_WRAP_WORD, &w, &h);
}
\f
-/* Writes STRING at location (X,Y) trimmed to the given MAX_WIDTH
- and with the given cell OPTIONS for XR. */
-static int
-draw_text (struct xr_driver *xr, const char *string, int x, int y,
- int max_width, unsigned int options)
-{
- struct table_cell cell;
- int bb[TABLE_N_AXES][2];
- int w, h;
-
- cell.contents = string;
- cell.options = options;
- bb[H][0] = x;
- bb[V][0] = y;
- bb[H][1] = x + max_width;
- bb[V][1] = xr->font_height;
- xr_layout_cell (xr, &cell, bb, bb, PANGO_WRAP_WORD_CHAR, &w, &h);
- return w;
-}
-
-/* Writes LEFT left-justified and RIGHT right-justified within
- (X0...X1) at Y. LEFT or RIGHT or both may be null. */
-static void
-draw_header_line (struct xr_driver *xr, const char *left, const char *right,
- int x0, int x1, int y)
-{
- int right_width = 0;
- if (right != NULL)
- right_width = (draw_text (xr, right, x0, y, x1 - x0, TAB_RIGHT)
- + xr->font_height / 2);
- if (left != NULL)
- draw_text (xr, left, x0, y, x1 - x0 - right_width, TAB_LEFT);
-}
-
-/* Draw top of page headers for XR. */
-static void
-draw_headers (struct xr_driver *xr)
-{
- char *r1, *r2;
- int x0, x1;
- int y;
-
- y = -3 * xr->font_height;
- x0 = xr->font_height / 2;
- x1 = xr->width - xr->font_height / 2;
-
- /* Draw box. */
- cairo_rectangle (xr->cairo, 0, xr_to_pt (y), xr_to_pt (xr->width),
- xr_to_pt (2 * (xr->font_height
- + xr->line_width + xr->line_gutter)));
- cairo_save (xr->cairo);
- cairo_set_source_rgb (xr->cairo, 0.9, 0.9, 0.9);
- cairo_fill_preserve (xr->cairo);
- cairo_restore (xr->cairo);
- cairo_stroke (xr->cairo);
-
- y += xr->line_width + xr->line_gutter;
-
- r1 = xasprintf (_("%s - Page %d"), get_start_date (), xr->page_number);
- r2 = xasprintf ("%s - %s", version, host_system);
-
- draw_header_line (xr, xr->title, r1, x0, x1, y);
- y += xr->font_height;
-
- draw_header_line (xr, xr->subtitle, r2, x0, x1, y);
-
- free (r1);
- free (r2);
-}
-\f
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],
}
}
\f
-/* Attempts to load FONT, initializing its other members based on
- its 'string' member and the information in DRIVER. Returns true
- if successful, otherwise false. */
-static bool
-load_font (struct xr_driver *xr, struct xr_font *font)
-{
- PangoContext *context;
- PangoLanguage *language;
-
- font->desc = pango_font_description_from_string (font->string);
- if (font->desc == NULL)
- {
- error (0, 0, _("\"%s\": bad font specification"), font->string);
- return false;
- }
- pango_font_description_set_absolute_size (font->desc, xr->font_height);
-
- font->layout = pango_cairo_create_layout (xr->cairo);
- pango_layout_set_font_description (font->layout, font->desc);
-
- language = pango_language_get_default ();
- context = pango_layout_get_context (font->layout);
- font->metrics = pango_context_get_metrics (context, font->desc, language);
-
- return true;
-}
-
-/* Frees FONT. */
-static void
-free_font (struct xr_font *font)
-{
- free (font->string);
- if (font->desc != NULL)
- pango_font_description_free (font->desc);
- pango_font_metrics_unref (font->metrics);
- if (font->layout != NULL)
- g_object_unref (font->layout);
-}
-
struct output_driver_factory pdf_driver_factory = { "pdf", xr_pdf_create };
struct output_driver_factory ps_driver_factory = { "ps", xr_ps_create };
struct output_driver_factory svg_driver_factory = { "svg", xr_svg_create };
#define CHART_HEIGHT 375
struct xr_driver *
-xr_create_driver (cairo_t *cairo)
+xr_driver_create (cairo_t *cairo, struct string_map *options)
{
- struct xr_driver *xr;
- struct string_map map;
-
- string_map_init (&map);
- xr = xr_allocate ("cairo", 0, &map);
- string_map_destroy (&map);
-
- xr->width = INT_MAX / 8;
- xr->length = INT_MAX / 8;
+ struct xr_driver *xr = xr_allocate ("cairo", 0, options);
if (!xr_set_cairo (xr, cairo))
{
output_driver_destroy (&xr->driver);
return xr;
}
+/* Destroy XR, which should have been created with xr_driver_create(). Any
+ cairo_t added to XR is not destroyed, because it is owned by the client. */
+void
+xr_driver_destroy (struct xr_driver *xr)
+{
+ if (xr != NULL)
+ {
+ xr->cairo = NULL;
+ output_driver_destroy (&xr->driver);
+ }
+}
+
+static struct xr_rendering *
+xr_rendering_create_text (struct xr_driver *xr, const char *text, cairo_t *cr)
+{
+ struct table_item *table_item;
+ struct xr_rendering *r;
+
+ table_item = table_item_create (table_from_string (0, text), NULL);
+ r = xr_rendering_create (xr, &table_item->output_item, cr);
+ table_item_unref (table_item);
+
+ return r;
+}
+
struct xr_rendering *
xr_rendering_create (struct xr_driver *xr, const struct output_item *item,
cairo_t *cr)
struct xr_rendering *r = NULL;
if (is_text_item (item))
+ r = xr_rendering_create_text (xr, text_item_get_text (to_text_item (item)),
+ cr);
+ else if (is_message_item (item))
{
- const struct text_item *text_item = to_text_item (item);
- const char *text = text_item_get_text (text_item);
- struct table_item *table_item;
-
- table_item = table_item_create (table_from_string (TAB_LEFT, text),
- NULL);
- r = xr_rendering_create (xr, &table_item->output_item, cr);
- table_item_unref (table_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))
{
}
}
+/* Draws onto CR at least the region of R that is enclosed in (X,Y)-(X+W,Y+H),
+ and possibly some additional parts. */
void
-xr_rendering_draw (struct xr_rendering *r, cairo_t *cr)
+xr_rendering_draw (struct xr_rendering *r, cairo_t *cr,
+ int x, int y, int w, int h)
{
if (r->chart == NULL)
{
xr_set_cairo (xr, cr);
xr->y = 0;
- render_page_draw (r->page);
+ render_page_draw_region (r->page,
+ x * 1024, y * 1024, w * 1024, h * 1024);
}
else
xr_draw_chart (r->chart, cr, 0, 0, CHART_WIDTH, CHART_HEIGHT);
status = cairo_surface_write_to_png (surface, file_name);
if (status != CAIRO_STATUS_SUCCESS)
- error (0, 0, _("writing output file \"%s\": %s"),
+ error (0, 0, _("error writing output file `%s': %s"),
file_name, cairo_status_to_string (status));
cairo_destroy (cr);
return file_name;
}
+\f
+struct xr_table_state
+ {
+ struct xr_render_fsm fsm;
+ struct table_item *table_item;
+ struct render_break x_break;
+ struct render_break y_break;
+ int caption_height;
+ };
+
+static bool
+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);
+
+ for (;;)
+ {
+ struct render_page *y_slice;
+ int space;
+
+ while (!render_break_has_next (&ts->y_break))
+ {
+ struct render_page *x_slice;
+
+ render_break_destroy (&ts->y_break);
+ if (!render_break_has_next (&ts->x_break))
+ return false;
+
+ x_slice = render_break_next (&ts->x_break, xr->width);
+ render_break_init (&ts->y_break, x_slice, V);
+ }
+
+ space = xr->length - xr->y;
+ if (render_break_next_size (&ts->y_break) > space)
+ {
+ assert (xr->y > 0);
+ return true;
+ }
+
+ y_slice = render_break_next (&ts->y_break, space);
+ if (ts->caption_height)
+ {
+ if (xr->cairo)
+ {
+ struct table_cell cell;
+ int bb[TABLE_N_AXES][2];
+
+ xr_init_caption_cell (table_item_get_caption (ts->table_item),
+ &cell);
+ bb[H][0] = 0;
+ bb[H][1] = xr->width;
+ bb[V][0] = 0;
+ bb[V][1] = ts->caption_height;
+ xr_draw_cell (xr, &cell, bb, bb);
+ }
+ xr->y += ts->caption_height;
+ ts->caption_height = 0;
+ }
+
+ if (xr->cairo)
+ render_page_draw (y_slice);
+ xr->y += render_page_get_size (y_slice, V);
+ render_page_unref (y_slice);
+ }
+}
+
+static void
+xr_table_destroy (struct xr_render_fsm *fsm)
+{
+ struct xr_table_state *ts = UP_CAST (fsm, struct xr_table_state, fsm);
+
+ table_item_unref (ts->table_item);
+ render_break_destroy (&ts->x_break);
+ render_break_destroy (&ts->y_break);
+ 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;
+ struct render_page *page;
+
+ ts = xmalloc (sizeof *ts);
+ ts->fsm.render = xr_table_render;
+ ts->fsm.destroy = xr_table_destroy;
+ ts->table_item = table_item_ref (table_item);
+
+ if (xr->y > 0)
+ xr->y += xr->char_height;
+
+ page = xr_render_table_item (xr, table_item, &ts->caption_height);
+ xr->params->size[V] = xr->length - ts->caption_height;
+
+ render_break_init (&ts->x_break, page, H);
+ render_break_init_empty (&ts->y_break);
+
+ return &ts->fsm;
+}
+\f
+struct xr_chart_state
+ {
+ struct xr_render_fsm fsm;
+ struct chart_item *chart_item;
+ };
+
+static bool
+xr_chart_render (struct xr_render_fsm *fsm, struct xr_driver *xr)
+{
+ struct xr_chart_state *cs = UP_CAST (fsm, struct xr_chart_state, fsm);
+
+ if (xr->y > 0)
+ return true;
+
+ if (xr->cairo != NULL)
+ xr_draw_chart (cs->chart_item, xr->cairo, 0.0, 0.0,
+ xr_to_pt (xr->width), xr_to_pt (xr->length));
+ xr->y = xr->length;
+
+ return false;
+}
+
+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;
+}
+\f
+static bool
+xr_eject_render (struct xr_render_fsm *fsm UNUSED, struct xr_driver *xr)
+{
+ return xr->y > 0;
+}
+
+static void
+xr_eject_destroy (struct xr_render_fsm *fsm UNUSED)
+{
+ /* Nothing to do. */
+}
+
+static struct xr_render_fsm *
+xr_render_eject (void)
+{
+ static struct xr_render_fsm eject_renderer =
+ {
+ xr_eject_render,
+ xr_eject_destroy
+ };
+
+ return &eject_renderer;
+}
+\f
+static struct xr_render_fsm *
+xr_create_text_renderer (struct xr_driver *xr, const char *text)
+{
+ struct table_item *table_item;
+ struct xr_render_fsm *fsm;
+
+ table_item = table_item_create (table_from_string (TAB_LEFT, text), NULL);
+ fsm = xr_render_table (xr, table_item);
+ table_item_unref (table_item);
+
+ return fsm;
+}
+
+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);
+
+ switch (type)
+ {
+ 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);
+ }
+
+ return NULL;
+}
+
+static struct xr_render_fsm *
+xr_render_message (struct xr_driver *xr,
+ const struct message_item *message_item)
+{
+ const struct msg *msg = message_item_get_msg (message_item);
+ struct xr_render_fsm *fsm;
+ char *s;
+
+ s = msg_to_string (msg, xr->command_name);
+ fsm = xr_create_text_renderer (xr, s);
+ free (s);
+
+ return fsm;
+}
+
+static struct xr_render_fsm *
+xr_render_output_item (struct xr_driver *xr,
+ const struct output_item *output_item)
+{
+ if (is_table_item (output_item))
+ return xr_render_table (xr, to_table_item (output_item));
+ else if (is_chart_item (output_item))
+ return xr_render_chart (to_chart_item (output_item));
+ else if (is_text_item (output_item))
+ return xr_render_text (xr, to_text_item (output_item));
+ else if (is_message_item (output_item))
+ return xr_render_message (xr, to_message_item (output_item));
+ else
+ return NULL;
+}
projects / pspp / blobdiff