diff options
| -rw-r--r-- | source/tools/pdfposter.c | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/source/tools/pdfposter.c b/source/tools/pdfposter.c index 1fa077c2..9a58909e 100644 --- a/source/tools/pdfposter.c +++ b/source/tools/pdfposter.c @@ -17,6 +17,38 @@ static void usage(void) exit(1); } +static void +intersect_box(fz_context *ctx, pdf_document *doc, pdf_obj *page, pdf_obj *box_name, const fz_rect *mb) +{ + pdf_obj *box = pdf_dict_get(ctx, page, box_name); + pdf_obj *newbox; + fz_rect old_rect; + + if (box == NULL) + return; + + old_rect.x0 = pdf_to_real(ctx, pdf_array_get(ctx, box, 0)); + old_rect.y0 = pdf_to_real(ctx, pdf_array_get(ctx, box, 1)); + old_rect.x1 = pdf_to_real(ctx, pdf_array_get(ctx, box, 2)); + old_rect.y1 = pdf_to_real(ctx, pdf_array_get(ctx, box, 3)); + + if (old_rect.x0 < mb->x0) + old_rect.x0 = mb->x0; + if (old_rect.y0 < mb->y0) + old_rect.y0 = mb->y0; + if (old_rect.x1 > mb->x1) + old_rect.x1 = mb->x1; + if (old_rect.y1 > mb->y1) + old_rect.y1 = mb->y1; + + newbox = pdf_new_array(ctx, doc, 4); + pdf_array_push(ctx, newbox, pdf_new_real(ctx, doc, old_rect.x0)); + pdf_array_push(ctx, newbox, pdf_new_real(ctx, doc, old_rect.y0)); + pdf_array_push(ctx, newbox, pdf_new_real(ctx, doc, old_rect.x1)); + pdf_array_push(ctx, newbox, pdf_new_real(ctx, doc, old_rect.y1)); + pdf_dict_put(ctx, page, box_name, newbox); +} + /* * Recreate page tree with our posterised pages in. */ @@ -98,6 +130,11 @@ static void decimatepages(fz_context *ctx, pdf_document *doc) pdf_dict_put(ctx, newpageobj, PDF_NAME_Parent, parent); pdf_dict_put(ctx, newpageobj, PDF_NAME_MediaBox, newmediabox); + intersect_box(ctx, doc, newpageobj, PDF_NAME_CropBox, &mb); + intersect_box(ctx, doc, newpageobj, PDF_NAME_BleedBox, &mb); + intersect_box(ctx, doc, newpageobj, PDF_NAME_TrimBox, &mb); + intersect_box(ctx, doc, newpageobj, PDF_NAME_ArtBox, &mb); + /* Store page object in new kids array */ pdf_array_push(ctx, kids, newpageref); |