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-rw-r--r--libqpdf/QPDFPageObjectHelper.cc189
1 files changed, 63 insertions, 126 deletions
diff --git a/libqpdf/QPDFPageObjectHelper.cc b/libqpdf/QPDFPageObjectHelper.cc
index f884b071..a34ed28f 100644
--- a/libqpdf/QPDFPageObjectHelper.cc
+++ b/libqpdf/QPDFPageObjectHelper.cc
@@ -32,11 +32,9 @@ void
ContentProvider::provideStreamData(QPDFObjGen const&, Pipeline* p)
{
Pl_Concatenate concat("concatenate", p);
- std::string description =
- "contents from page object " + from_page.getObjGen().unparse(' ');
+ std::string description = "contents from page object " + from_page.getObjGen().unparse(' ');
std::string all_description;
- from_page.getKey("/Contents")
- .pipeContentStreams(&concat, description, all_description);
+ from_page.getKey("/Contents").pipeContentStreams(&concat, description, all_description);
concat.manualFinish();
}
@@ -61,8 +59,7 @@ namespace
};
} // namespace
-InlineImageTracker::InlineImageTracker(
- QPDF* qpdf, size_t min_size, QPDFObjectHandle resources) :
+InlineImageTracker::InlineImageTracker(QPDF* qpdf, size_t min_size, QPDFObjectHandle resources) :
qpdf(qpdf),
min_size(min_size),
resources(resources),
@@ -117,15 +114,12 @@ InlineImageTracker::convertIIDict(QPDFObjectHandle odict)
// /ColorSpace dictionary. We need to look it up
// and use its value as the color space for the
// image.
- QPDFObjectHandle colorspace =
- resources.getKey("/ColorSpace");
+ QPDFObjectHandle colorspace = resources.getKey("/ColorSpace");
if (colorspace.isDictionary() && colorspace.hasKey(name)) {
- QTC::TC(
- "qpdf", "QPDFPageObjectHelper colorspace lookup");
+ QTC::TC("qpdf", "QPDFPageObjectHelper colorspace lookup");
value = colorspace.getKey(name);
} else {
- resources.warnIfPossible(
- "unable to resolve colorspace " + name);
+ resources.warnIfPossible("unable to resolve colorspace " + name);
}
name.clear();
}
@@ -185,20 +179,15 @@ InlineImageTracker::handleToken(QPDFTokenizer::Token const& token)
std::string image_data(token.getValue());
size_t len = image_data.length();
if (len >= this->min_size) {
- QTC::TC(
- "qpdf", "QPDFPageObjectHelper externalize inline image");
+ QTC::TC("qpdf", "QPDFPageObjectHelper externalize inline image");
Pl_Buffer b("image_data");
b.writeString(image_data);
b.finish();
- QPDFObjectHandle dict =
- convertIIDict(QPDFObjectHandle::parse(dict_str));
- dict.replaceKey(
- "/Length",
- QPDFObjectHandle::newInteger(QIntC::to_longlong(len)));
- std::string name =
- resources.getUniqueResourceName("/IIm", this->min_suffix);
- QPDFObjectHandle image = QPDFObjectHandle::newStream(
- this->qpdf, b.getBufferSharedPointer());
+ QPDFObjectHandle dict = convertIIDict(QPDFObjectHandle::parse(dict_str));
+ dict.replaceKey("/Length", QPDFObjectHandle::newInteger(QIntC::to_longlong(len)));
+ std::string name = resources.getUniqueResourceName("/IIm", this->min_suffix);
+ QPDFObjectHandle image =
+ QPDFObjectHandle::newStream(this->qpdf, b.getBufferSharedPointer());
image.replaceDict(dict);
resources.getKey("/XObject").replaceKey(name, image);
write(name);
@@ -252,8 +241,7 @@ QPDFPageObjectHelper::getAttribute(
auto result = dict.getKey(name);
if (!is_form_xobject && result.isNull() &&
- (name == "/MediaBox" || name == "/CropBox" || name == "/Resources" ||
- name == "/Rotate")) {
+ (name == "/MediaBox" || name == "/CropBox" || name == "/Resources" || name == "/Rotate")) {
QPDFObjectHandle node = dict;
QPDFObjGen::set seen{};
while (seen.add(node) && node.hasKey("/Parent")) {
@@ -267,10 +255,7 @@ QPDFPageObjectHelper::getAttribute(
}
}
if (copy_if_shared && (inherited || result.isIndirect())) {
- QTC::TC(
- "qpdf",
- "QPDFPageObjectHelper copy shared attribute",
- is_form_xobject ? 0 : 1);
+ QTC::TC("qpdf", "QPDFPageObjectHelper copy shared attribute", is_form_xobject ? 0 : 1);
result = dict.replaceKeyAndGetNew(name, result.shallowCopy());
}
if (result.isNull() && get_fallback) {
@@ -279,8 +264,7 @@ QPDFPageObjectHelper::getAttribute(
QTC::TC("qpdf", "QPDFPageObjectHelper copied fallback");
result = dict.replaceKeyAndGetNew(name, result.shallowCopy());
} else {
- QTC::TC(
- "qpdf", "QPDFPageObjectHelper used fallback without copying");
+ QTC::TC("qpdf", "QPDFPageObjectHelper used fallback without copying");
}
}
return result;
@@ -341,25 +325,21 @@ QPDFPageObjectHelper::getBleedBox(bool copy_if_shared, bool copy_if_fallback)
void
QPDFPageObjectHelper::forEachXObject(
bool recursive,
- std::function<void(
- QPDFObjectHandle& obj,
- QPDFObjectHandle& xobj_dict,
- std::string const& key)> action,
+ std::function<void(QPDFObjectHandle& obj, QPDFObjectHandle& xobj_dict, std::string const& key)>
+ action,
std::function<bool(QPDFObjectHandle)> selector)
{
QTC::TC(
"qpdf",
"QPDFPageObjectHelper::forEachXObject",
- recursive ? (this->oh.isFormXObject() ? 0 : 1)
- : (this->oh.isFormXObject() ? 2 : 3));
+ recursive ? (this->oh.isFormXObject() ? 0 : 1) : (this->oh.isFormXObject() ? 2 : 3));
QPDFObjGen::set seen;
std::list<QPDFPageObjectHelper> queue;
queue.push_back(*this);
while (!queue.empty()) {
auto& ph = queue.front();
if (seen.add(ph)) {
- auto xobj_dict =
- ph.getAttribute("/Resources", false).getKeyIfDict("/XObject");
+ auto xobj_dict = ph.getAttribute("/Resources", false).getKeyIfDict("/XObject");
if (xobj_dict.isDictionary()) {
for (auto const& key: xobj_dict.getKeys()) {
QPDFObjectHandle obj = xobj_dict.getKey(key);
@@ -379,26 +359,19 @@ QPDFPageObjectHelper::forEachXObject(
void
QPDFPageObjectHelper::forEachImage(
bool recursive,
- std::function<void(
- QPDFObjectHandle& obj,
- QPDFObjectHandle& xobj_dict,
- std::string const& key)> action)
+ std::function<void(QPDFObjectHandle& obj, QPDFObjectHandle& xobj_dict, std::string const& key)>
+ action)
{
- forEachXObject(
- recursive, action, [](QPDFObjectHandle obj) { return obj.isImage(); });
+ forEachXObject(recursive, action, [](QPDFObjectHandle obj) { return obj.isImage(); });
}
void
QPDFPageObjectHelper::forEachFormXObject(
bool recursive,
- std::function<void(
- QPDFObjectHandle& obj,
- QPDFObjectHandle& xobj_dict,
- std::string const& key)> action)
+ std::function<void(QPDFObjectHandle& obj, QPDFObjectHandle& xobj_dict, std::string const& key)>
+ action)
{
- forEachXObject(recursive, action, [](QPDFObjectHandle obj) {
- return obj.isFormXObject();
- });
+ forEachXObject(recursive, action, [](QPDFObjectHandle obj) { return obj.isFormXObject(); });
}
std::map<std::string, QPDFObjectHandle>
@@ -412,9 +385,7 @@ QPDFPageObjectHelper::getImages()
{
std::map<std::string, QPDFObjectHandle> result;
forEachImage(
- false,
- [&result](
- QPDFObjectHandle& obj, QPDFObjectHandle&, std::string const& key) {
+ false, [&result](QPDFObjectHandle& obj, QPDFObjectHandle&, std::string const& key) {
result[key] = obj;
});
return result;
@@ -425,9 +396,7 @@ QPDFPageObjectHelper::getFormXObjects()
{
std::map<std::string, QPDFObjectHandle> result;
forEachFormXObject(
- false,
- [&result](
- QPDFObjectHandle& obj, QPDFObjectHandle&, std::string const& key) {
+ false, [&result](QPDFObjectHandle& obj, QPDFObjectHandle&, std::string const& key) {
result[key] = obj;
});
return result;
@@ -462,18 +431,14 @@ QPDFPageObjectHelper::externalizeInlineImages(size_t min_size, bool shallow)
} else {
this->oh.replaceKey(
"/Contents",
- QPDFObjectHandle::newStream(
- &this->oh.getQPDF(), b.getBufferSharedPointer()));
+ QPDFObjectHandle::newStream(&this->oh.getQPDF(), b.getBufferSharedPointer()));
}
}
} else {
externalizeInlineImages(min_size, true);
forEachFormXObject(
- true,
- [min_size](
- QPDFObjectHandle& obj, QPDFObjectHandle&, std::string const&) {
- QPDFPageObjectHelper(obj).externalizeInlineImages(
- min_size, true);
+ true, [min_size](QPDFObjectHandle& obj, QPDFObjectHandle&, std::string const&) {
+ QPDFPageObjectHelper(obj).externalizeInlineImages(min_size, true);
});
}
}
@@ -520,15 +485,13 @@ QPDFPageObjectHelper::coalesceContentStreams()
}
void
-QPDFPageObjectHelper::parsePageContents(
- QPDFObjectHandle::ParserCallbacks* callbacks)
+QPDFPageObjectHelper::parsePageContents(QPDFObjectHandle::ParserCallbacks* callbacks)
{
parseContents(callbacks);
}
void
-QPDFPageObjectHelper::parseContents(
- QPDFObjectHandle::ParserCallbacks* callbacks)
+QPDFPageObjectHelper::parseContents(QPDFObjectHandle::ParserCallbacks* callbacks)
{
if (this->oh.isFormXObject()) {
this->oh.parseAsContents(callbacks);
@@ -538,15 +501,13 @@ QPDFPageObjectHelper::parseContents(
}
void
-QPDFPageObjectHelper::filterPageContents(
- QPDFObjectHandle::TokenFilter* filter, Pipeline* next)
+QPDFPageObjectHelper::filterPageContents(QPDFObjectHandle::TokenFilter* filter, Pipeline* next)
{
return filterContents(filter, next);
}
void
-QPDFPageObjectHelper::filterContents(
- QPDFObjectHandle::TokenFilter* filter, Pipeline* next)
+QPDFPageObjectHelper::filterContents(QPDFObjectHandle::TokenFilter* filter, Pipeline* next)
{
if (this->oh.isFormXObject()) {
this->oh.filterAsContents(filter, next);
@@ -598,10 +559,9 @@ QPDFPageObjectHelper::removeUnreferencedResourcesHelper(
ph.parseContents(&rf);
size_t after_nw = (q ? q->numWarnings() : 0);
if (after_nw > before_nw) {
- ph.oh.warnIfPossible(
- "Bad token found while scanning content stream; "
- "not attempting to remove unreferenced objects from"
- " this object");
+ ph.oh.warnIfPossible("Bad token found while scanning content stream; "
+ "not attempting to remove unreferenced objects from"
+ " this object");
return false;
}
} catch (std::exception& e) {
@@ -699,10 +659,8 @@ QPDFPageObjectHelper::removeUnreferencedResources()
bool any_failures = false;
forEachFormXObject(
true,
- [&any_failures, &unresolved](
- QPDFObjectHandle& obj, QPDFObjectHandle&, std::string const&) {
- if (!removeUnreferencedResourcesHelper(
- QPDFPageObjectHelper(obj), unresolved)) {
+ [&any_failures, &unresolved](QPDFObjectHandle& obj, QPDFObjectHandle&, std::string const&) {
+ if (!removeUnreferencedResourcesHelper(QPDFPageObjectHelper(obj), unresolved)) {
any_failures = true;
}
});
@@ -714,8 +672,8 @@ QPDFPageObjectHelper::removeUnreferencedResources()
QPDFPageObjectHelper
QPDFPageObjectHelper::shallowCopyPage()
{
- QPDF& qpdf = this->oh.getQPDF(
- "QPDFPageObjectHelper::shallowCopyPage called with a direct object");
+ QPDF& qpdf =
+ this->oh.getQPDF("QPDFPageObjectHelper::shallowCopyPage called with a direct object");
QPDFObjectHandle new_page = this->oh.shallowCopy();
return QPDFPageObjectHelper(qpdf.makeIndirectObject(new_page));
}
@@ -734,10 +692,8 @@ QPDFPageObjectHelper::getMatrixForTransformations(bool invert)
QPDFObjectHandle::Rectangle rect = bbox.getArrayAsRectangle();
double width = rect.urx - rect.llx;
double height = rect.ury - rect.lly;
- double scale =
- (scale_obj.isNumber() ? scale_obj.getNumericValue() : 1.0);
- int rotate =
- (rotate_obj.isInteger() ? rotate_obj.getIntValueAsInt() : 0);
+ double scale = (scale_obj.isNumber() ? scale_obj.getNumericValue() : 1.0);
+ int rotate = (rotate_obj.isInteger() ? rotate_obj.getIntValueAsInt() : 0);
if (invert) {
if (scale == 0.0) {
return matrix;
@@ -749,16 +705,13 @@ QPDFPageObjectHelper::getMatrixForTransformations(bool invert)
// Ignore invalid rotation angle
switch (rotate) {
case 90:
- matrix =
- QPDFObjectHandle::Matrix(0, -scale, scale, 0, 0, width * scale);
+ matrix = QPDFObjectHandle::Matrix(0, -scale, scale, 0, 0, width * scale);
break;
case 180:
- matrix = QPDFObjectHandle::Matrix(
- -scale, 0, 0, -scale, width * scale, height * scale);
+ matrix = QPDFObjectHandle::Matrix(-scale, 0, 0, -scale, width * scale, height * scale);
break;
case 270:
- matrix = QPDFObjectHandle::Matrix(
- 0, scale, -scale, 0, height * scale, 0);
+ matrix = QPDFObjectHandle::Matrix(0, scale, -scale, 0, height * scale, 0);
break;
default:
matrix = QPDFObjectHandle::Matrix(scale, 0, 0, scale, 0, 0);
@@ -778,8 +731,7 @@ QPDFPageObjectHelper::getFormXObjectForPage(bool handle_transformations)
QPDFObjectHandle newdict = result.getDict();
newdict.replaceKey("/Type", QPDFObjectHandle::newName("/XObject"));
newdict.replaceKey("/Subtype", QPDFObjectHandle::newName("/Form"));
- newdict.replaceKey(
- "/Resources", getAttribute("/Resources", false).shallowCopy());
+ newdict.replaceKey("/Resources", getAttribute("/Resources", false).shallowCopy());
newdict.replaceKey("/Group", getAttribute("/Group", false).shallowCopy());
QPDFObjectHandle bbox = getTrimBox(false).shallowCopy();
if (!bbox.isRectangle()) {
@@ -787,17 +739,13 @@ QPDFPageObjectHelper::getFormXObjectForPage(bool handle_transformations)
" XObject created from page will not work");
}
newdict.replaceKey("/BBox", bbox);
- auto provider = std::shared_ptr<QPDFObjectHandle::StreamDataProvider>(
- new ContentProvider(this->oh));
- result.replaceStreamData(
- provider, QPDFObjectHandle::newNull(), QPDFObjectHandle::newNull());
+ auto provider =
+ std::shared_ptr<QPDFObjectHandle::StreamDataProvider>(new ContentProvider(this->oh));
+ result.replaceStreamData(provider, QPDFObjectHandle::newNull(), QPDFObjectHandle::newNull());
QPDFObjectHandle rotate_obj = getAttribute("/Rotate", false);
QPDFObjectHandle scale_obj = getAttribute("/UserUnit", false);
- if (handle_transformations &&
- (!(rotate_obj.isNull() && scale_obj.isNull()))) {
- newdict.replaceKey(
- "/Matrix",
- QPDFObjectHandle::newArray(getMatrixForTransformations()));
+ if (handle_transformations && (!(rotate_obj.isNull() && scale_obj.isNull()))) {
+ newdict.replaceKey("/Matrix", QPDFObjectHandle::newArray(getMatrixForTransformations()));
}
return result;
@@ -921,8 +869,7 @@ QPDFPageObjectHelper::placeFormXObject(
bool allow_expand)
{
QPDFMatrix cm;
- return placeFormXObject(
- fo, name, rect, cm, invert_transformations, allow_shrink, allow_expand);
+ return placeFormXObject(fo, name, rect, cm, invert_transformations, allow_shrink, allow_expand);
}
std::string
@@ -943,8 +890,8 @@ QPDFPageObjectHelper::placeFormXObject(
void
QPDFPageObjectHelper::flattenRotation(QPDFAcroFormDocumentHelper* afdh)
{
- QPDF& qpdf = this->oh.getQPDF(
- "QPDFPageObjectHelper::flattenRotation called with a direct object");
+ QPDF& qpdf =
+ this->oh.getQPDF("QPDFPageObjectHelper::flattenRotation called with a direct object");
auto rotate_oh = this->oh.getKey("/Rotate");
int rotate = 0;
if (rotate_oh.isInteger()) {
@@ -1013,8 +960,7 @@ QPDFPageObjectHelper::flattenRotation(QPDFAcroFormDocumentHelper* afdh)
break;
}
- this->oh.replaceKey(
- boxkey, QPDFObjectHandle::newFromRectangle(new_rect));
+ this->oh.replaceKey(boxkey, QPDFObjectHandle::newFromRectangle(new_rect));
}
// When we rotate the page, pivot about the point 0, 0 and then
@@ -1066,8 +1012,7 @@ QPDFPageObjectHelper::flattenRotation(QPDFAcroFormDocumentHelper* afdh)
afdhph = std::make_shared<QPDFAcroFormDocumentHelper>(qpdf);
afdh = afdhph.get();
}
- afdh->transformAnnotations(
- annots, new_annots, new_fields, old_fields, cm);
+ afdh->transformAnnotations(annots, new_annots, new_fields, old_fields, cm);
afdh->removeFormFields(old_fields);
for (auto const& f: new_fields) {
afdh->addFormField(QPDFFormFieldObjectHelper(f));
@@ -1090,8 +1035,8 @@ QPDFPageObjectHelper::copyAnnotations(
QPDF& from_qpdf = from_page.getObjectHandle().getQPDF(
"QPDFPageObjectHelper::copyAnnotations: from page is a direct object");
- QPDF& this_qpdf = this->oh.getQPDF(
- "QPDFPageObjectHelper::copyAnnotations: this page is a direct object");
+ QPDF& this_qpdf =
+ this->oh.getQPDF("QPDFPageObjectHelper::copyAnnotations: this page is a direct object");
std::vector<QPDFObjectHandle> new_annots;
std::vector<QPDFObjectHandle> new_fields;
@@ -1106,9 +1051,8 @@ QPDFPageObjectHelper::copyAnnotations(
from_afdh = afdh;
} else if (from_afdh) {
if (from_afdh->getQPDF().getUniqueId() != from_qpdf.getUniqueId()) {
- throw std::logic_error(
- "QPDFAcroFormDocumentHelper::copyAnnotations: from_afdh"
- " is not from the same QPDF as from_page");
+ throw std::logic_error("QPDFAcroFormDocumentHelper::copyAnnotations: from_afdh"
+ " is not from the same QPDF as from_page");
}
} else {
from_afdhph = std::make_shared<QPDFAcroFormDocumentHelper>(from_qpdf);
@@ -1116,18 +1060,11 @@ QPDFPageObjectHelper::copyAnnotations(
}
afdh->transformAnnotations(
- old_annots,
- new_annots,
- new_fields,
- old_fields,
- cm,
- &from_qpdf,
- from_afdh);
+ old_annots, new_annots, new_fields, old_fields, cm, &from_qpdf, from_afdh);
afdh->addAndRenameFormFields(new_fields);
auto annots = this->oh.getKey("/Annots");
if (!annots.isArray()) {
- annots = this->oh.replaceKeyAndGetNew(
- "/Annots", QPDFObjectHandle::newArray());
+ annots = this->oh.replaceKeyAndGetNew("/Annots", QPDFObjectHandle::newArray());
}
for (auto const& annot: new_annots) {
annots.appendItem(annot);
generated by cgit v1.2.3-54-g00ecf (git 2.45.2) at 2024-07-03 15:11:48 +0200