diff options
Diffstat (limited to 'include')
| -rw-r--r-- | include/qpdf/QPDFObjectHandle.hh | 5 | ||||
| -rw-r--r-- | include/qpdf/QPDFPageObjectHelper.hh | 41 |
2 files changed, 45 insertions, 1 deletions
diff --git a/include/qpdf/QPDFObjectHandle.hh b/include/qpdf/QPDFObjectHandle.hh index e383e274..2a5d0392 100644 --- a/include/qpdf/QPDFObjectHandle.hh +++ b/include/qpdf/QPDFObjectHandle.hh @@ -1150,6 +1150,11 @@ class QPDFObjectHandle QPDF_DLL bool isFormXObject(); + // Indicate if this is an image. If exclude_imagemask is true, + // don't count image masks as images. + QPDF_DLL + bool isImage(bool exclude_imagemask=true); + private: QPDFObjectHandle(QPDF*, int objid, int generation); QPDFObjectHandle(QPDFObject*); diff --git a/include/qpdf/QPDFPageObjectHelper.hh b/include/qpdf/QPDFPageObjectHelper.hh index b25de1fe..93745446 100644 --- a/include/qpdf/QPDFPageObjectHelper.hh +++ b/include/qpdf/QPDFPageObjectHelper.hh @@ -72,11 +72,42 @@ class QPDFPageObjectHelper: public QPDFObjectHelper QPDFObjectHandle getMediaBox(bool copy_if_shared = false); + // Iterate through XObjects, possibly recursing into form + // XObjects. This works with pages or form XObjects. Call action + // on each XObject for which selector, if specified, returns true. + // With no selector, calls action for every object. In addition to + // the object being passed to action, the containing XObject + // dictionary and key are passed in. Remember that the XObject + // dictionary may be shared, and the object may appear in multiple + // XObject dictionaries. + QPDF_DLL + void forEachXObject( + bool recursive, + std::function<void(QPDFObjectHandle& obj, + QPDFObjectHandle& xobj_dict, + std::string const& key)> action, + std::function<bool(QPDFObjectHandle)> selector=nullptr); + // Only call action for images + QPDF_DLL + void forEachImage( + bool recursive, + std::function<void(QPDFObjectHandle& obj, + QPDFObjectHandle& xobj_dict, + std::string const& key)> action); + // Only call action for form XObjects + QPDF_DLL + void forEachFormXObject( + bool recursive, + std::function<void(QPDFObjectHandle& obj, + QPDFObjectHandle& xobj_dict, + std::string const& key)> action); + // Returns an empty map if there are no images or no resources. // Prior to qpdf 8.4.0, this function did not support inherited // resources, but it does now. Return value is a map from XObject // name to the image object, which is always a stream. Works with - // form XObjects as well as pages. + // form XObjects as well as pages. This method does not recurse + // into nested form XObjects. For that, use forEachImage. QPDF_DLL std::map<std::string, QPDFObjectHandle> getImages(); @@ -84,6 +115,14 @@ class QPDFPageObjectHelper: public QPDFObjectHelper QPDF_DLL std::map<std::string, QPDFObjectHandle> getPageImages(); + // Returns an empty map if there are no form XObjects or no + // resources. Otherwise, returns a map of keys to form XObjects + // directly referenced from this page or form XObjects. This does + // not recurse into nested form XObjects. For that, use + // forEachFormXObject. + QPDF_DLL + std::map<std::string, QPDFObjectHandle> getFormXObjects(); + // Convert each inline image to an external (normal) image if the // size is at least the specified number of bytes. QPDF_DLL |