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LibPDF: Allow the page rotation to be inherited

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This commit is contained in:
Julian Offenhäuser 2023-03-24 22:15:17 +01:00 • committed by Andrew Kaster
parent b90a794d78
commit 95a804bc4e
Notes: sideshowbarker 2024-07-17 18:38:54 +09:00
2 changed files with 15 additions and 2 deletions
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16
Userland/Libraries/LibPDF/Document.cpp
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@ -158,8 +158,9 @@ PDFErrorOr<Page> Document::get_page(u32 index)
user_unit = raw_page_object->get_value(CommonNames::UserUnit).to_float();
int rotate = 0;
if (raw_page_object->contains(CommonNames::Rotate)) {
rotate = raw_page_object->get_value(CommonNames::Rotate).get<int>();
auto maybe_rotate = TRY(get_inheritable_value(CommonNames::Rotate, raw_page_object));
if (maybe_rotate.has_value()) {
rotate = maybe_rotate.value().to_int();
VERIFY(rotate % 90 == 0);
}
@ -339,6 +340,17 @@ PDFErrorOr<Optional<NonnullRefPtr<Object>>> Document::get_inheritable_object(Dep
return TRY(object->get_object(this, name));
}
PDFErrorOr<Optional<Value>> Document::get_inheritable_value(DeprecatedFlyString const& name, NonnullRefPtr<DictObject> object)
{
if (!object->contains(name)) {
if (!object->contains(CommonNames::Parent))
return { OptionalNone() };
auto parent = TRY(object->get_dict(this, CommonNames::Parent));
return get_inheritable_value(name, parent);
}
return object->get(name);
}
PDFErrorOr<Destination> Document::create_destination_from_dictionary_entry(NonnullRefPtr<Object> const& entry, HashMap<u32, u32> const& page_number_by_index_ref)
{
if (entry->is<ArrayObject>()) {

1
Userland/Libraries/LibPDF/Document.h
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@ -144,6 +144,7 @@ private:
PDFErrorOr<Destination> create_destination_from_dictionary_entry(NonnullRefPtr<Object> const& entry, HashMap<u32, u32> const& page_number_by_index_ref);
PDFErrorOr<Optional<NonnullRefPtr<Object>>> get_inheritable_object(DeprecatedFlyString const& name, NonnullRefPtr<DictObject>);
PDFErrorOr<Optional<Value>> get_inheritable_value(DeprecatedFlyString const& name, NonnullRefPtr<DictObject>);
PDFErrorOr<NonnullRefPtr<Object>> find_in_name_tree(NonnullRefPtr<DictObject> root, DeprecatedFlyString name);
PDFErrorOr<NonnullRefPtr<Object>> find_in_name_tree_nodes(NonnullRefPtr<ArrayObject> siblings, DeprecatedFlyString name);