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Build this->all_pages while traversing with pushInheritedAttributesToPage

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This commit is contained in:
Tobias Hoffmann 2012-06-22 18:11:25 +02:00 committed by Jay Berkenbilt
parent e2dedde4bd
commit 39bbaa86e3
3 changed files with 13 additions and 8 deletions
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1
include/qpdf/QPDF.hh
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@ -913,6 +913,7 @@ class QPDF
void pushInheritedAttributesToPageInternal(
QPDFObjectHandle,
std::map<std::string, std::vector<QPDFObjectHandle> >&,
std::vector<QPDFObjectHandle>& all_pages,
bool allow_changes, bool warn_skipped_keys);
void updateObjectMaps(ObjUser const& ou, QPDFObjectHandle oh);
void updateObjectMapsInternal(ObjUser const& ou, QPDFObjectHandle oh,

10
libqpdf/QPDF_optimization.cc
View File

@ -166,9 +166,8 @@ QPDF::optimize(std::map<int, int> const& object_stream_data,
}
// Traverse pages tree pushing all inherited resources down to the
// page level.
// page level. This also initializes this->all_pages.
pushInheritedAttributesToPage(allow_changes, false);
getAllPages();
// Traverse pages
int n = this->all_pages.size();
@ -236,9 +235,10 @@ QPDF::pushInheritedAttributesToPage(bool allow_changes, bool warn_skipped_keys)
// key_ancestors is a mapping of page attribute keys to a stack of
// Pages nodes that contain values for them.
std::map<std::string, std::vector<QPDFObjectHandle> > key_ancestors;
this->all_pages.clear();
pushInheritedAttributesToPageInternal(
this->trailer.getKey("/Root").getKey("/Pages"),
key_ancestors, allow_changes, warn_skipped_keys);
key_ancestors, this->all_pages, allow_changes, warn_skipped_keys);
assert(key_ancestors.empty());
}
@ -246,6 +246,7 @@ void
QPDF::pushInheritedAttributesToPageInternal(
QPDFObjectHandle cur_pages,
std::map<std::string, std::vector<QPDFObjectHandle> >& key_ancestors,
std::vector<QPDFObjectHandle>& pages,
bool allow_changes, bool warn_skipped_keys)
{
// Extract the underlying dictionary object
@ -336,7 +337,7 @@ QPDF::pushInheritedAttributesToPageInternal(
for (int i = 0; i < n; ++i)
{
pushInheritedAttributesToPageInternal(
kids.getArrayItem(i), key_ancestors,
kids.getArrayItem(i), key_ancestors, pages,
allow_changes, warn_skipped_keys);
}
@ -385,6 +386,7 @@ QPDF::pushInheritedAttributesToPageInternal(
QTC::TC("qpdf", "QPDF opt page resource hides ancestor");
}
}
pages.push_back(cur_pages);
}
else
{

10
libqpdf/QPDF_pages.cc
View File

@ -43,6 +43,8 @@
std::vector<QPDFObjectHandle> const&
QPDF::getAllPages()
{
// Note that pushInheritedAttributesToPage may also be used to
// initialize this->all_pages.
if (this->all_pages.empty())
{
getAllPagesInternal(getRoot().getKey("/Pages"), this->all_pages);
@ -101,9 +103,9 @@ QPDF::flattenPagesTree()
return;
}
// Push inherited objects down to the /Page level
// Push inherited objects down to the /Page level. As a side
// effect this->all_pages will also be generated.
pushInheritedAttributesToPage(true, true);
getAllPages();
QPDFObjectHandle pages = getRoot().getKey("/Pages");
@ -228,14 +230,14 @@ QPDF::addPageAt(QPDFObjectHandle newpage, bool before,
void
QPDF::addPage(QPDFObjectHandle newpage, bool first)
{
getAllPages();
if (first)
{
insertPage(newpage, 0);
}
else
{
insertPage(newpage, (int)this->all_pages.size());
insertPage(newpage,
getRoot().getKey("/Pages").getKey("/Count").getIntValue());
}
}