// method: draw all the pages to appropriate recording surfaces and then get ink extents
void evenodd_cropboxes(PopplerDocument *document, cairo_rectangle_t *odd_page_crop_box, cairo_rectangle_t *even_page_crop_box) {
GError *error = NULL;
int num_document_pages = poppler_document_get_n_pages(document);
cairo_surface_t *odd_pages = cairo_recording_surface_create(CAIRO_CONTENT_COLOR_ALPHA, NULL);
cairo_surface_t *even_pages = cairo_recording_surface_create(CAIRO_CONTENT_COLOR_ALPHA, NULL);
int page_num;
for (page_num = 0; page_num < num_document_pages; page_num++) {
cairo_surface_t *surface = odd_pages;
if (page_num % 2 == 1) {
surface = even_pages;
}
cairo_t *cr = cairo_create(surface);
PopplerPage *page = poppler_document_get_page(document, page_num);
if (page == NULL) {
printf("%s:%d: %s\n", __FILE__, __LINE__, error->message);
exit(1);
}
poppler_page_render_for_printing(page, cr);
g_object_unref(page);
exit_if_cairo_status_not_success(cr, __FILE__, __LINE__);
cairo_destroy(cr);
}
cairo_recording_surface_ink_extents(odd_pages,
&odd_page_crop_box->x,
&odd_page_crop_box->y,
&odd_page_crop_box->width,
&odd_page_crop_box->height);
cairo_recording_surface_ink_extents(even_pages,
&even_page_crop_box->x,
&even_page_crop_box->y,
&even_page_crop_box->width,
&even_page_crop_box->height);
// use to check extent and crop box handling
// write_surface_to_file_showing_crop_box("odd.pdf", odd_pages, odd_page_crop_box);
// write_surface_to_file_showing_crop_box("even.pdf", even_pages, even_page_crop_box);
// cleanup surfaces used to get crop boxes
cairo_surface_destroy(odd_pages);
exit_if_cairo_surface_status_not_success(odd_pages, __FILE__, __LINE__);
cairo_surface_destroy(even_pages);
exit_if_cairo_surface_status_not_success(even_pages, __FILE__, __LINE__);
}
static cairo_test_status_t
test_cairo_recording_surface_ink_extents (cairo_surface_t *surface)
{
double x, y, w, h;
cairo_recording_surface_ink_extents (surface, &x, &y, &w, &h);
return x == 0 && y == 0 && w == 0 && h == 0 ? CAIRO_TEST_SUCCESS : CAIRO_TEST_ERROR;
}
static int
recording_surface_ink_extents (lua_State *L) {
double x0, y0, width, height;
cairo_surface_t **obj = luaL_checkudata(L, 1, OOCAIRO_MT_NAME_SURFACE);
cairo_recording_surface_ink_extents(*obj, &x0, &y0, &width, &height);
lua_pushnumber(L, x0);
lua_pushnumber(L, y0);
lua_pushnumber(L, width);
lua_pushnumber(L, height);
return 4;
}
void add_per_page_cropboxes(PopplerDocument *document, struct pages_t *pages) {
GError *error = NULL;
int num_document_pages = poppler_document_get_n_pages(document);
int page_num;
for (page_num = 0; page_num < pages->npages; page_num++) {
int document_page_num = pages->pages[page_num].num;
printf("document_page_num: %d\n", document_page_num);
if (document_page_num >= num_document_pages) {
printf("ERROR: The document does not have page %d, it only has %d pages\n", document_page_num, num_document_pages);
exit(2);
}
cairo_surface_t *surface = cairo_recording_surface_create(CAIRO_CONTENT_COLOR_ALPHA, NULL);
cairo_t *cr = cairo_create(surface);
PopplerPage *page = poppler_document_get_page(document, document_page_num);
if (page == NULL) {
printf("%s:%d: %s\n", __FILE__, __LINE__, error->message);
exit(1);
}
poppler_page_render_for_printing(page, cr);
g_object_unref(page);
exit_if_cairo_status_not_success(cr, __FILE__, __LINE__);
cairo_destroy(cr);
cairo_rectangle_t *crop_box = malloc(sizeof(cairo_rectangle_t));
cairo_recording_surface_ink_extents(surface,
&crop_box->x,
&crop_box->y,
&crop_box->width,
&crop_box->height);
// use to check extent and crop box handling
// write_surface_to_file_showing_crop_box("per_page.pdf", surface, crop_box);
// cleanup surfaces used to get crop boxes
cairo_surface_destroy(surface);
exit_if_cairo_surface_status_not_success(surface, __FILE__, __LINE__);
pages->pages[page_num].crop_box = crop_box;
}
}
static cairo_rectangle_t *
ar_card_theme_kde_get_card_extents (ArCardThemeKDE *theme,
int card_id,
const char *node)
{
ArSvg *svg;
cairo_rectangle_t *card_extents;
cairo_rectangle_t rect;
cairo_surface_t *surface;
cairo_t *cr;
card_extents = &theme->card_extents[card_id];
/* Is it initalised yet? */
if (card_extents->width != 0. && card_extents->height != 0.)
return card_extents;
svg = ((ArCardThemePreimage *) theme)->cards_svg;
surface = cairo_recording_surface_create (CAIRO_CONTENT_ALPHA, NULL);
cr = cairo_create (surface);
cairo_set_tolerance (cr, 1.);
ar_profilestart ("getting ink extents for node %s", node);
rsvg_handle_render_cairo_sub (RSVG_HANDLE (svg), cr, node);
ar_profileend ("getting ink extents for node %s", node);
cairo_destroy (cr);
cairo_recording_surface_ink_extents (surface, &rect.x, &rect.y, &rect.width, &rect.height);
cairo_surface_destroy (surface);
ar_debug_print (AR_DEBUG_CARD_THEME,
"card %s %.3f x%.3f at (%.3f | %.3f)\n",
node,
card_extents->width, card_extents->height,
card_extents->x, card_extents->y);
*card_extents = rect;
/* Sanity check; necessary? */
if (rect.width == 0. || rect.height == 0.)
return NULL;
return card_extents;
}
