diff options
-rw-r--r-- | mupdf/mupdf.h | 5 | ||||
-rw-r--r-- | mupdf/pdf_interpret.c | 42 |
2 files changed, 42 insertions, 5 deletions
diff --git a/mupdf/mupdf.h b/mupdf/mupdf.h index f82bf9bb..4184a59f 100644 --- a/mupdf/mupdf.h +++ b/mupdf/mupdf.h @@ -598,6 +598,10 @@ struct pdf_csi_s fz_device *dev; pdf_xref *xref; + /* usage mode for optional content groups */ + char *target; /* "View", "Print", "Export" */ + + /* interpreter stack */ fz_obj *obj; char name[256]; unsigned char string[256]; @@ -646,6 +650,7 @@ void pdf_gsave(pdf_csi *csi); void pdf_grestore(pdf_csi *csi); fz_error pdf_runcsibuffer(pdf_csi *csi, fz_obj *rdb, fz_buffer *contents); fz_error pdf_runxobject(pdf_csi *csi, fz_obj *resources, pdf_xobject *xobj, fz_matrix transform); +fz_error pdf_runpagewithtarget(pdf_xref *xref, pdf_page *page, fz_device *dev, fz_matrix ctm, char *target); fz_error pdf_runpage(pdf_xref *xref, pdf_page *page, fz_device *dev, fz_matrix ctm); fz_error pdf_runglyph(pdf_xref *xref, fz_obj *resources, fz_buffer *contents, fz_device *dev, fz_matrix ctm); diff --git a/mupdf/pdf_interpret.c b/mupdf/pdf_interpret.c index 6de24e74..dbeeb997 100644 --- a/mupdf/pdf_interpret.c +++ b/mupdf/pdf_interpret.c @@ -2,13 +2,14 @@ #include "mupdf.h" static pdf_csi * -pdf_newcsi(pdf_xref *xref, fz_device *dev, fz_matrix ctm) +pdf_newcsi(pdf_xref *xref, fz_device *dev, fz_matrix ctm, char *target) { pdf_csi *csi; csi = fz_malloc(sizeof(pdf_csi)); csi->xref = xref; csi->dev = dev; + csi->target = target; csi->top = 0; csi->obj = nil; @@ -154,6 +155,25 @@ pdf_freecsi(pdf_csi *csi) fz_free(csi); } +static int +pdf_ishiddenocg(pdf_csi *csi, fz_obj *xobj) +{ + char target_state[16]; + fz_obj *obj; + + fz_strlcpy(target_state, csi->target, sizeof target_state); + fz_strlcat(target_state, "State", sizeof target_state); + + obj = fz_dictgets(xobj, "OC"); + obj = fz_dictgets(obj, "OCGs"); + if (fz_isarray(obj)) + obj = fz_arrayget(obj, 0); + obj = fz_dictgets(obj, "Usage"); + obj = fz_dictgets(obj, csi->target); + obj = fz_dictgets(obj, target_state); + return !strcmp(fz_toname(obj), "OFF"); +} + fz_error pdf_runxobject(pdf_csi *csi, fz_obj *resources, pdf_xobject *xobj, fz_matrix transform) { @@ -547,6 +567,9 @@ static fz_error pdf_run_Do(pdf_csi *csi, fz_obj *rdb) if (!fz_isname(subtype)) return fz_throw("no XObject subtype specified"); + if (pdf_ishiddenocg(csi, obj)) + return fz_okay; + if (!strcmp(fz_toname(subtype), "Form") && fz_dictgets(obj, "Subtype2")) subtype = fz_dictgets(obj, "Subtype2"); @@ -1377,7 +1400,7 @@ pdf_runcsibuffer(pdf_csi *csi, fz_obj *rdb, fz_buffer *contents) } fz_error -pdf_runpage(pdf_xref *xref, pdf_page *page, fz_device *dev, fz_matrix ctm) +pdf_runpagewithtarget(pdf_xref *xref, pdf_page *page, fz_device *dev, fz_matrix ctm, char *target) { pdf_csi *csi; fz_error error; @@ -1389,7 +1412,7 @@ pdf_runpage(pdf_xref *xref, pdf_page *page, fz_device *dev, fz_matrix ctm) fz_transformrect(ctm, page->mediabox), 0, 0, FZ_BNORMAL, 1); - csi = pdf_newcsi(xref, dev, ctm); + csi = pdf_newcsi(xref, dev, ctm, target); error = pdf_runcsibuffer(csi, page->resources, page->contents); pdf_freecsi(csi); if (error) @@ -1407,7 +1430,10 @@ pdf_runpage(pdf_xref *xref, pdf_page *page, fz_device *dev, fz_matrix ctm) if (flags & (1 << 5)) /* NoView */ continue; - csi = pdf_newcsi(xref, dev, ctm); + if (pdf_ishiddenocg(csi, annot->obj)) + continue; + + csi = pdf_newcsi(xref, dev, ctm, target); error = pdf_runxobject(csi, page->resources, annot->ap, annot->matrix); pdf_freecsi(csi); if (error) @@ -1421,9 +1447,15 @@ pdf_runpage(pdf_xref *xref, pdf_page *page, fz_device *dev, fz_matrix ctm) } fz_error +pdf_runpage(pdf_xref *xref, pdf_page *page, fz_device *dev, fz_matrix ctm) +{ + return pdf_runpagewithtarget(xref, page, dev, ctm, "View"); +} + +fz_error pdf_runglyph(pdf_xref *xref, fz_obj *resources, fz_buffer *contents, fz_device *dev, fz_matrix ctm) { - pdf_csi *csi = pdf_newcsi(xref, dev, ctm); + pdf_csi *csi = pdf_newcsi(xref, dev, ctm, "View"); fz_error error = pdf_runcsibuffer(csi, resources, contents); pdf_freecsi(csi); if (error) |