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AcroForms implementation (data structures start)

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Jakub Melka
2020-04-18 19:01:49 +02:00
parent 9b71031ec3
commit 247c2c98f7
15 changed files with 724 additions and 105 deletions
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29
PdfForQtLib/sources/pdfdocument.h
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@ -28,6 +28,8 @@
#include <QMatrix>
#include <QDateTime>
#include <optional>
namespace pdf
{
class PDFDocument;
@ -138,12 +140,12 @@ public:
/// Reads a name from the object, if it is possible. If object is not a name,
/// then empty byte array is returned.
/// \param object Object, can be an indirect reference to object (it is dereferenced)
QByteArray readName(const PDFObject& object);
QByteArray readName(const PDFObject& object) const;
/// Reads a string from the object, if it is possible. If object is not a string,
/// then empty byte array is returned.
/// \param object Object, can be an indirect reference to object (it is dereferenced)
QByteArray readString(const PDFObject& object);
QByteArray readString(const PDFObject& object) const;
/// Reads an integer from the object, if it is possible.
/// \param object Object, can be an indirect reference to object (it is dereferenced)
@ -239,15 +241,15 @@ public:
/// Tries to read matrix from the dictionary. If matrix entry is not present, default value is returned.
/// If it is present and invalid, exception is thrown.
QMatrix readMatrixFromDictionary(const PDFDictionary* dictionary, const char* key, QMatrix defaultValue);
QMatrix readMatrixFromDictionary(const PDFDictionary* dictionary, const char* key, QMatrix defaultValue) const;
/// Tries to read array of real values from dictionary. If entry dictionary doesn't exist,
/// or error occurs, default value is returned.
std::vector<PDFReal> readNumberArrayFromDictionary(const PDFDictionary* dictionary, const char* key, std::vector<PDFReal> defaultValue = std::vector<PDFReal>());
std::vector<PDFReal> readNumberArrayFromDictionary(const PDFDictionary* dictionary, const char* key, std::vector<PDFReal> defaultValue = std::vector<PDFReal>()) const;
/// Tries to read array of integer values from dictionary. If entry dictionary doesn't exist,
/// or error occurs, empty array is returned.
std::vector<PDFInteger> readIntegerArrayFromDictionary(const PDFDictionary* dictionary, const char* key);
std::vector<PDFInteger> readIntegerArrayFromDictionary(const PDFDictionary* dictionary, const char* key) const;
/// Reads number from dictionary. If dictionary entry doesn't exist, or error occurs, default value is returned.
/// \param dictionary Dictionary containing desired data
@ -275,7 +277,7 @@ public:
/// Tries to read array of references from dictionary. If entry dictionary doesn't exist,
/// or error occurs, empty array is returned.
std::vector<PDFObjectReference> readReferenceArrayFromDictionary(const PDFDictionary* dictionary, const char* key);
std::vector<PDFObjectReference> readReferenceArrayFromDictionary(const PDFDictionary* dictionary, const char* key) const;
/// Reads number array from dictionary. Reads all values. If some value is not
/// real number (or integer number), default value is returned. Default value is also returned,
@ -324,12 +326,12 @@ public:
/// Reads a name from dictionary. If dictionary entry doesn't exist, or error occurs, empty byte array is returned.
/// \param dictionary Dictionary containing desired data
/// \param key Entry key
QByteArray readNameFromDictionary(const PDFDictionary* dictionary, const char* key);
QByteArray readNameFromDictionary(const PDFDictionary* dictionary, const char* key) const;
/// Reads a string from dictionary. If dictionary entry doesn't exist, or error occurs, empty byte array is returned.
/// \param dictionary Dictionary containing desired data
/// \param key Entry key
QByteArray readStringFromDictionary(const PDFDictionary* dictionary, const char* key);
QByteArray readStringFromDictionary(const PDFDictionary* dictionary, const char* key) const;
/// Reads string array from dictionary. Reads all values. If error occurs,
/// then empty array is returned.
@ -361,6 +363,17 @@ public:
return result;
}
/// Reads optional string from dictionary. If key is not in dictionary,
/// then empty optional is returned.
/// \param dictionary Dictionary containing desired data
/// \param key Entry key
std::optional<QByteArray> readOptionalStringFromDictionary(const PDFDictionary* dictionary, const char* key) const;
/// Reads optionalinteger from dictionary. If dictionary entry doesn't exist, or error occurs, empty optional is returned.
/// \param dictionary Dictionary containing desired data
/// \param key Entry key
std::optional<PDFInteger> readOptionalIntegerFromDictionary(const PDFDictionary* dictionary, const char* key) const;
private:
const PDFObjectStorage* m_storage;
};