diff options
Diffstat (limited to 'pdf/pdf_pattern.c')
-rw-r--r-- | pdf/pdf_pattern.c | 89 |
1 files changed, 89 insertions, 0 deletions
diff --git a/pdf/pdf_pattern.c b/pdf/pdf_pattern.c new file mode 100644 index 00000000..7d3a38d1 --- /dev/null +++ b/pdf/pdf_pattern.c @@ -0,0 +1,89 @@ +#include "fitz.h" +#include "mupdf.h" + +fz_error +pdf_loadpattern(pdf_pattern **patp, pdf_xref *xref, fz_obj *dict) +{ + fz_error error; + pdf_pattern *pat; + fz_obj *obj; + + if ((*patp = pdf_finditem(xref->store, pdf_droppattern, dict))) + { + pdf_keeppattern(*patp); + return fz_okay; + } + + pdf_logrsrc("load pattern (%d %d R) {\n", fz_tonum(dict), fz_togen(dict)); + + pat = fz_malloc(sizeof(pdf_pattern)); + pat->refs = 1; + pat->resources = nil; + pat->contents = nil; + + /* Store pattern now, to avoid possible recursion if objects refer back to this one */ + pdf_storeitem(xref->store, pdf_keeppattern, pdf_droppattern, dict, pat); + + pat->ismask = fz_toint(fz_dictgets(dict, "PaintType")) == 2; + pat->xstep = fz_toreal(fz_dictgets(dict, "XStep")); + pat->ystep = fz_toreal(fz_dictgets(dict, "YStep")); + + pdf_logrsrc("mask %d\n", pat->ismask); + pdf_logrsrc("xstep %g\n", pat->xstep); + pdf_logrsrc("ystep %g\n", pat->ystep); + + obj = fz_dictgets(dict, "BBox"); + pat->bbox = pdf_torect(obj); + + pdf_logrsrc("bbox [%g %g %g %g]\n", + pat->bbox.x0, pat->bbox.y0, + pat->bbox.x1, pat->bbox.y1); + + obj = fz_dictgets(dict, "Matrix"); + if (obj) + pat->matrix = pdf_tomatrix(obj); + else + pat->matrix = fz_identity; + + pdf_logrsrc("matrix [%g %g %g %g %g %g]\n", + pat->matrix.a, pat->matrix.b, + pat->matrix.c, pat->matrix.d, + pat->matrix.e, pat->matrix.f); + + pat->resources = fz_dictgets(dict, "Resources"); + if (pat->resources) + fz_keepobj(pat->resources); + + error = pdf_loadstream(&pat->contents, xref, fz_tonum(dict), fz_togen(dict)); + if (error) + { + pdf_removeitem(xref->store, pdf_droppattern, dict); + pdf_droppattern(pat); + return fz_rethrow(error, "cannot load pattern stream (%d %d R)", fz_tonum(dict), fz_togen(dict)); + } + + pdf_logrsrc("}\n"); + + *patp = pat; + return fz_okay; +} + +pdf_pattern * +pdf_keeppattern(pdf_pattern *pat) +{ + pat->refs ++; + return pat; +} + +void +pdf_droppattern(pdf_pattern *pat) +{ + if (pat && --pat->refs == 0) + { + if (pat->resources) + fz_dropobj(pat->resources); + if (pat->contents) + fz_dropbuffer(pat->contents); + fz_free(pat); + } +} |