Add QPDFPageDocumentHelper and QPDFPageObjectHelper

This is the beginning of higher-level API support using helper
classes. The goal is to be able to add more helpers without continuing
to pollute QPDF's and QPDFObjectHandle's public interfaces.

3 files changed, 127 insertions, 0 deletions

diff --git a/libqpdf/QPDFPageDocumentHelper.cc b/libqpdf/QPDFPageDocumentHelper.cc
new file mode 100644
index 00000000..64f83db4
--- /dev/null
+++ b/libqpdf/QPDFPageDocumentHelper.cc
@@ -0,0 +1,53 @@
+#include <qpdf/QPDFPageDocumentHelper.hh>
+
+QPDFPageDocumentHelper::Members::~Members()
+{
+}
+
+QPDFPageDocumentHelper::Members::Members()
+{
+}
+
+QPDFPageDocumentHelper::QPDFPageDocumentHelper(QPDF& qpdf) :
+    QPDFDocumentHelper(qpdf)
+{
+}
+
+std::vector<QPDFPageObjectHelper>
+QPDFPageDocumentHelper::getAllPages()
+{
+    std::vector<QPDFObjectHandle> const& pages_v = this->qpdf.getAllPages();
+    std::vector<QPDFPageObjectHelper> pages;
+    for (std::vector<QPDFObjectHandle>::const_iterator iter = pages_v.begin();
+         iter != pages_v.end(); ++iter)
+    {
+        pages.push_back(QPDFPageObjectHelper(*iter));
+    }
+    return pages;
+}
+
+void
+QPDFPageDocumentHelper::pushInheritedAttributesToPage()
+{
+    this->qpdf.pushInheritedAttributesToPage();
+}
+
+void
+QPDFPageDocumentHelper::addPage(QPDFPageObjectHelper newpage, bool first)
+{
+    this->qpdf.addPage(newpage.getObjectHandle(), first);
+}
+
+void
+QPDFPageDocumentHelper::addPageAt(QPDFPageObjectHelper newpage, bool before,
+                                  QPDFPageObjectHelper refpage)
+{
+    this->qpdf.addPageAt(newpage.getObjectHandle(), before,
+                         refpage.getObjectHandle());
+}
+
+void
+QPDFPageDocumentHelper::removePage(QPDFPageObjectHelper page)
+{
+    this->qpdf.removePage(page.getObjectHandle());
+}
diff --git a/libqpdf/QPDFPageObjectHelper.cc b/libqpdf/QPDFPageObjectHelper.cc
new file mode 100644
index 00000000..b16d8751
--- /dev/null
+++ b/libqpdf/QPDFPageObjectHelper.cc
@@ -0,0 +1,72 @@
+#include <qpdf/QPDFPageObjectHelper.hh>
+
+QPDFPageObjectHelper::Members::~Members()
+{
+}
+
+QPDFPageObjectHelper::Members::Members()
+{
+}
+
+QPDFPageObjectHelper::QPDFPageObjectHelper(QPDFObjectHandle oh) :
+    QPDFObjectHelper(oh)
+{
+}
+
+std::map<std::string, QPDFObjectHandle>
+QPDFPageObjectHelper::getPageImages()
+{
+    return this->oh.getPageImages();
+}
+
+std::vector<QPDFObjectHandle>
+QPDFPageObjectHelper::getPageContents()
+{
+    return this->oh.getPageContents();
+}
+
+void
+QPDFPageObjectHelper::addPageContents(QPDFObjectHandle contents, bool first)
+{
+    this->oh.addPageContents(contents, first);
+}
+
+void
+QPDFPageObjectHelper::rotatePage(int angle, bool relative)
+{
+    this->oh.rotatePage(angle, relative);
+}
+
+void
+QPDFPageObjectHelper::coalesceContentStreams()
+{
+    this->oh.coalesceContentStreams();
+}
+
+void
+QPDFPageObjectHelper::parsePageContents(
+    QPDFObjectHandle::ParserCallbacks* callbacks)
+{
+    this->oh.parsePageContents(callbacks);
+}
+
+void
+QPDFPageObjectHelper::filterPageContents(
+    QPDFObjectHandle::TokenFilter* filter,
+    Pipeline* next)
+{
+    this->oh.filterPageContents(filter, next);
+}
+
+void
+QPDFPageObjectHelper::pipePageContents(Pipeline* p)
+{
+    this->oh.pipePageContents(p);
+}
+
+void
+QPDFPageObjectHelper::addContentTokenFilter(
+    PointerHolder<QPDFObjectHandle::TokenFilter> token_filter)
+{
+    this->oh.addContentTokenFilter(token_filter);
+}
diff --git a/libqpdf/build.mk b/libqpdf/build.mk
index 11895623..07cfc81e 100644
--- a/libqpdf/build.mk
+++ b/libqpdf/build.mk
@@ -39,6 +39,8 @@ SRCS_libqpdf = \
 	libqpdf/QPDFObjGen.cc \
 	libqpdf/QPDFObject.cc \
 	libqpdf/QPDFObjectHandle.cc \
+	libqpdf/QPDFPageDocumentHelper.cc \
+	libqpdf/QPDFPageObjectHelper.cc \
 	libqpdf/QPDFTokenizer.cc \
 	libqpdf/QPDFWriter.cc \
 	libqpdf/QPDFXRefEntry.cc \