From 0b05111db80469d3f556209bfd856af1fda9b142 Mon Sep 17 00:00:00 2001
From: Jay Berkenbilt <ejb@ql.org>
Date: Tue, 19 Jun 2018 09:26:41 -0400
Subject: Implement helper class for interactive forms

---
 libqpdf/QPDFAnnotationObjectHelper.cc | 75 +++++++++++++++++++++++++++++++++++
 1 file changed, 75 insertions(+)
 create mode 100644 libqpdf/QPDFAnnotationObjectHelper.cc

(limited to 'libqpdf/QPDFAnnotationObjectHelper.cc')

diff --git a/libqpdf/QPDFAnnotationObjectHelper.cc b/libqpdf/QPDFAnnotationObjectHelper.cc
new file mode 100644
index 00000000..ee1d8180
--- /dev/null
+++ b/libqpdf/QPDFAnnotationObjectHelper.cc
@@ -0,0 +1,75 @@
+#include <qpdf/QPDFAnnotationObjectHelper.hh>
+#include <qpdf/QTC.hh>
+
+QPDFAnnotationObjectHelper::Members::~Members()
+{
+}
+
+QPDFAnnotationObjectHelper::Members::Members()
+{
+}
+
+QPDFAnnotationObjectHelper::QPDFAnnotationObjectHelper(QPDFObjectHandle oh) :
+    QPDFObjectHelper(oh)
+{
+}
+
+std::string
+QPDFAnnotationObjectHelper::getSubtype()
+{
+    return this->oh.getKey("/Subtype").getName();
+}
+
+QPDFObjectHandle::Rectangle
+QPDFAnnotationObjectHelper::getRect()
+{
+    return this->oh.getKey("/Rect").getArrayAsRectangle();
+}
+
+QPDFObjectHandle
+QPDFAnnotationObjectHelper::getAppearanceDictionary()
+{
+    return this->oh.getKey("/AP");
+}
+
+std::string
+QPDFAnnotationObjectHelper::getAppearanceState()
+{
+    if (this->oh.getKey("/AS").isName())
+    {
+        QTC::TC("qpdf", "QPDFAnnotationObjectHelper AS present");
+        return this->oh.getKey("/AS").getName();
+    }
+    QTC::TC("qpdf", "QPDFAnnotationObjectHelper AS absent");
+    return "";
+}
+
+QPDFObjectHandle
+QPDFAnnotationObjectHelper::getAppearanceStream(
+    std::string const& which,
+    std::string const& state)
+{
+    QPDFObjectHandle ap = getAppearanceDictionary();
+    std::string desired_state = state.empty() ? getAppearanceState() : state;
+    if (ap.isDictionary())
+    {
+        QPDFObjectHandle ap_sub = ap.getKey(which);
+        if (ap_sub.isStream() && desired_state.empty())
+        {
+            QTC::TC("qpdf", "QPDFAnnotationObjectHelper AP stream");
+            return ap_sub;
+        }
+        if (ap_sub.isDictionary() && (! desired_state.empty()))
+        {
+            QTC::TC("qpdf", "QPDFAnnotationObjectHelper AP dictionary");
+            QPDFObjectHandle ap_sub_val = ap_sub.getKey(desired_state);
+            if (ap_sub_val.isStream())
+            {
+                QTC::TC("qpdf", "QPDFAnnotationObjectHelper AN sub stream");
+                return ap_sub_val;
+            }
+        }
+    }
+    QTC::TC("qpdf", "QPDFAnnotationObjectHelper AN null");
+    return QPDFObjectHandle::newNull();
+}
-- 
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