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Adjust graphic state according to the PDF 2.0 specification

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This commit is contained in:
Jakub Melka
2020-08-09 17:10:42 +02:00
parent 8262654b0e
commit c033de6917
4 changed files with 319 additions and 51 deletions
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55
PdfForQtLib/sources/pdfutils.h
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@ -527,6 +527,61 @@ private:
QString m_errorMessage;
};
template<typename Enum>
class PDFFlags
{
public:
using Integer = typename std::underlying_type<Enum>::type;
constexpr inline PDFFlags() noexcept = default;
constexpr inline PDFFlags(Integer flags) noexcept : m_flags(flags) { }
constexpr inline PDFFlags(Enum flag) noexcept : m_flags(flag) { }
constexpr inline PDFFlags& operator|=(Integer flags) { m_flags |= flags; return *this; }
constexpr inline PDFFlags& operator|=(PDFFlags flags) { m_flags |= flags.m_flags; return *this; }
constexpr inline PDFFlags& operator|=(Enum flag) { m_flags |= flag; return *this; }
constexpr inline PDFFlags& operator&=(Integer flags) { m_flags &= flags; return *this; }
constexpr inline PDFFlags& operator&=(PDFFlags flags) { m_flags &= flags.m_flags; return *this; }
constexpr inline PDFFlags& operator&=(Enum flag) { m_flags &= flag; return *this; }
constexpr inline PDFFlags& operator^=(Integer flags) { m_flags ^= flags; return *this; }
constexpr inline PDFFlags& operator^=(PDFFlags flags) { m_flags ^= flags.m_flags; return *this; }
constexpr inline PDFFlags& operator^=(Enum flag) { m_flags ^= flag; return *this; }
constexpr inline operator Integer() const { return m_flags; }
constexpr inline PDFFlags operator|(Integer flags) const { return PDFFlags(m_flags | flags); }
constexpr inline PDFFlags operator|(PDFFlags flags) const { return PDFFlags(m_flags | flags.m_flags); }
constexpr inline PDFFlags operator|(Enum flag) const { return PDFFlags(m_flags | flag); }
constexpr inline PDFFlags operator&(Integer flags) const { return PDFFlags(m_flags & flags); }
constexpr inline PDFFlags operator&(PDFFlags flags) const { return PDFFlags(m_flags & flags.m_flags); }
constexpr inline PDFFlags operator&(Enum flag) const { return PDFFlags(m_flags & flag); }
constexpr inline PDFFlags operator^(Integer flags) const { return PDFFlags(m_flags ^ flags); }
constexpr inline PDFFlags operator^(PDFFlags flags) const { return PDFFlags(m_flags ^ flags.m_flags); }
constexpr inline PDFFlags operator^(Enum flag) const { return PDFFlags(m_flags ^ flag); }
constexpr inline PDFFlags operator~() const { return PDFFlags(~m_flags); }
// Explicit bool operator to disallow implicit conversion
constexpr inline explicit operator bool() const { return m_flags != 0; }
constexpr inline bool operator!() const { return m_flags == 0; }
constexpr inline bool testFlag(Enum flag) const { return (m_flags & flag) == flag; }
constexpr inline PDFFlags& setFlag(Enum flag, bool on = true)
{
if (on)
{
m_flags |= Integer(flag);
}
else
{
m_flags &= ~Integer(flag);
}
return *this;
}
private:
Integer m_flags = Integer();
};
/// Set of closed intervals
class PDFClosedIntervalSet
{