fz_shade *
pdf_load_shading(pdf_document *xref, pdf_obj *dict)
{
fz_matrix mat;
pdf_obj *obj;
fz_context *ctx = xref->ctx;
fz_shade *shade;
if ((shade = pdf_find_item(ctx, fz_free_shade_imp, dict)))
{
return shade;
}
/* Type 2 pattern dictionary */
if (pdf_dict_gets(dict, "PatternType"))
{
obj = pdf_dict_gets(dict, "Matrix");
if (obj)
mat = pdf_to_matrix(ctx, obj);
else
mat = fz_identity;
obj = pdf_dict_gets(dict, "ExtGState");
if (obj)
{
if (pdf_dict_gets(obj, "CA") || pdf_dict_gets(obj, "ca"))
{
fz_warn(ctx, "shading with alpha not supported");
}
}
obj = pdf_dict_gets(dict, "Shading");
if (!obj)
fz_throw(ctx, "syntaxerror: missing shading dictionary");
shade = pdf_load_shading_dict(xref, obj, mat);
/* RJW: "cannot load shading dictionary (%d %d R)", pdf_to_num(obj), pdf_to_gen(obj) */
}
/* Naked shading dictionary */
else
{
shade = pdf_load_shading_dict(xref, dict, fz_identity);
/* RJW: "cannot load shading dictionary (%d %d R)", pdf_to_num(dict), pdf_to_gen(dict) */
}
pdf_store_item(ctx, dict, shade, fz_shade_size(shade));
return shade;
}
fz_shade *
pdf_load_shading(fz_context *ctx, pdf_document *doc, pdf_obj *dict)
{
fz_matrix mat;
pdf_obj *obj;
fz_shade *shade;
if ((shade = pdf_find_item(ctx, fz_drop_shade_imp, dict)) != NULL)
{
return shade;
}
/* Type 2 pattern dictionary */
if (pdf_dict_gets(ctx, dict, "PatternType"))
{
obj = pdf_dict_gets(ctx, dict, "Matrix");
if (obj)
pdf_to_matrix(ctx, obj, &mat);
else
mat = fz_identity;
obj = pdf_dict_gets(ctx, dict, "ExtGState");
if (obj)
{
if (pdf_dict_gets(ctx, obj, "CA") || pdf_dict_gets(ctx, obj, "ca"))
{
fz_warn(ctx, "shading with alpha not supported");
}
}
obj = pdf_dict_gets(ctx, dict, "Shading");
if (!obj)
fz_throw(ctx, FZ_ERROR_GENERIC, "syntaxerror: missing shading dictionary");
shade = pdf_load_shading_dict(ctx, doc, obj, &mat);
}
/* Naked shading dictionary */
else
{
shade = pdf_load_shading_dict(ctx, doc, dict, &fz_identity);
}
pdf_store_item(ctx, dict, shade, fz_shade_size(shade));
return shade;
}
fz_shade *
pdf_load_shading(fz_context *ctx, pdf_document *doc, pdf_obj *dict)
{
fz_matrix mat;
pdf_obj *obj;
fz_shade *shade;
if ((shade = pdf_find_item(ctx, fz_drop_shade_imp, dict)) != NULL)
{
return shade;
}
/* Type 2 pattern dictionary */
if (pdf_dict_get(ctx, dict, PDF_NAME(PatternType)))
{
obj = pdf_dict_get(ctx, dict, PDF_NAME(Matrix));
if (obj)
pdf_to_matrix(ctx, obj, &mat);
else
mat = fz_identity;
obj = pdf_dict_get(ctx, dict, PDF_NAME(ExtGState));
if (obj)
{
if (pdf_dict_get(ctx, obj, PDF_NAME(CA)) || pdf_dict_get(ctx, obj, PDF_NAME(ca)))
{
fz_warn(ctx, "shading with alpha not supported");
}
}
obj = pdf_dict_get(ctx, dict, PDF_NAME(Shading));
if (!obj)
fz_throw(ctx, FZ_ERROR_SYNTAX, "missing shading dictionary");
shade = pdf_load_shading_dict(ctx, doc, obj, &mat);
}
/* Naked shading dictionary */
else
{
shade = pdf_load_shading_dict(ctx, doc, dict, &fz_identity);
}
pdf_store_item(ctx, dict, shade, fz_shade_size(ctx, shade));
return shade;
}
