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| author | Tor Andersson <tor.andersson@artifex.com> | 2018-02-25 22:23:31 +0100 |
|---|---|---|
| committer | Tor Andersson <tor.andersson@artifex.com> | 2018-02-27 14:08:28 +0100 |
| commit | 51d84cb3b67ab17f2eae1530044d531320e6a5fa (patch) | |
| tree | b988c88f560598edce60fd481e050f5e85df6bfb /source/pdf | |
| parent | 4e490cbc7472da69e481146c8bf932027623f33c (diff) | |
| download | mupdf-51d84cb3b67ab17f2eae1530044d531320e6a5fa.tar.xz | |
Add annotation QuadPoints creation functions.
Diffstat (limited to 'source/pdf')
| -rw-r--r-- | source/pdf/pdf-annot-edit.c | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/source/pdf/pdf-annot-edit.c b/source/pdf/pdf-annot-edit.c index 5b12fc40..1138e72d 100644 --- a/source/pdf/pdf-annot-edit.c +++ b/source/pdf/pdf-annot-edit.c @@ -839,6 +839,50 @@ pdf_set_annot_quad_points(fz_context *ctx, pdf_annot *annot, int n, const float pdf_dirty_annot(ctx, annot); } +void +pdf_clear_annot_quad_points(fz_context *ctx, pdf_annot *annot) +{ + check_allowed_subtypes(ctx, annot, PDF_NAME_QuadPoints, quad_point_subtypes); + pdf_dict_del(ctx, annot->obj, PDF_NAME_QuadPoints); + pdf_dirty_annot(ctx, annot); +} + +void +pdf_add_annot_quad_point(fz_context *ctx, pdf_annot *annot, fz_rect bbox) +{ + pdf_document *doc = annot->page->doc; + fz_matrix page_ctm, inv_page_ctm; + pdf_obj *quad_points; + + check_allowed_subtypes(ctx, annot, PDF_NAME_QuadPoints, quad_point_subtypes); + + pdf_page_transform(ctx, annot->page, NULL, &page_ctm); + fz_invert_matrix(&inv_page_ctm, &page_ctm); + + quad_points = pdf_dict_get(ctx, annot->obj, PDF_NAME_QuadPoints); + if (!pdf_is_array(ctx, quad_points)) + { + quad_points = pdf_new_array(ctx, doc, 8); + pdf_dict_put_drop(ctx, annot->obj, PDF_NAME_QuadPoints, quad_points); + } + + /* Contrary to the specification, the points within a QuadPoint are NOT ordered + * in a counterclockwise fashion. Experiments with Adobe's implementation + * indicates a cross-wise ordering is intended: ul, ur, ll, lr. + */ + fz_transform_rect(&bbox, &inv_page_ctm); + pdf_array_push_real(ctx, quad_points, bbox.x0); /* ul */ + pdf_array_push_real(ctx, quad_points, bbox.y1); + pdf_array_push_real(ctx, quad_points, bbox.x1); /* ur */ + pdf_array_push_real(ctx, quad_points, bbox.y1); + pdf_array_push_real(ctx, quad_points, bbox.x0); /* ll */ + pdf_array_push_real(ctx, quad_points, bbox.y0); + pdf_array_push_real(ctx, quad_points, bbox.x1); /* lr */ + pdf_array_push_real(ctx, quad_points, bbox.y0); + + pdf_dirty_annot(ctx, annot); +} + static pdf_obj *ink_list_subtypes[] = { PDF_NAME_Ink, NULL, |