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| author | Robin Watts <robin.watts@artifex.com> | 2015-10-01 19:39:59 +0100 |
|---|---|---|
| committer | Robin Watts <robin.watts@artifex.com> | 2015-10-02 15:53:20 +0100 |
| commit | f810f1dba5da32f00cd11142eaa31b1a736d1aa0 (patch) | |
| tree | 6f98e6ca286c09e79bf6a1ebd555977d099fb0b9 /source/tools/pdfposter.c | |
| parent | 1acaaf2b40614401378aa697de47093be9f390fe (diff) | |
| download | mupdf-f810f1dba5da32f00cd11142eaa31b1a736d1aa0.tar.xz | |
Bug 696078: Improve box handling in poster tool.
The poster tool worked by rewriting the mediabox, but left the
other boxes (crop, bleed, trim, art) unchanged. This could
cause problems with viewers that didn't intersect such boxes.
This update makes the poster tool write intersected boxes for
all boxes.
Diffstat (limited to 'source/tools/pdfposter.c')
| -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); |