diff options
| -rw-r--r-- | include/mupdf/pdf/annot.h | 3 | ||||
| -rw-r--r-- | source/pdf/pdf-annot-edit.c | 44 |
2 files changed, 47 insertions, 0 deletions
diff --git a/include/mupdf/pdf/annot.h b/include/mupdf/pdf/annot.h index 4b012ed7..1fb0ab0e 100644 --- a/include/mupdf/pdf/annot.h +++ b/include/mupdf/pdf/annot.h @@ -165,7 +165,10 @@ void pdf_set_annot_rect(fz_context *ctx, pdf_annot *annot, const fz_rect *rect); void pdf_set_annot_border(fz_context *ctx, pdf_annot *annot, float width); void pdf_set_annot_color(fz_context *ctx, pdf_annot *annot, int n, const float color[4]); void pdf_set_annot_interior_color(fz_context *ctx, pdf_annot *annot, int n, const float color[4]); + void pdf_set_annot_quad_points(fz_context *ctx, pdf_annot *annot, int n, const float *v); +void pdf_clear_annot_quad_points(fz_context *ctx, pdf_annot *annot); +void pdf_add_annot_quad_point(fz_context *ctx, pdf_annot *annot, fz_rect bbox); void pdf_set_annot_ink_list(fz_context *ctx, pdf_annot *annot, int n, const int *count, const float *v); void pdf_clear_annot_ink_list(fz_context *ctx, pdf_annot *annot); 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, |