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ToUnicode map also in Type3 fonts

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Jakub Melka
2020-08-21 16:37:57 +02:00
parent b1beca8ef9
commit 9c260bb75a
2 changed files with 65 additions and 40 deletions
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75
PdfForQtLib/sources/pdffont.h
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@ -61,7 +61,7 @@ struct TextSequenceItem
inline explicit TextSequenceItem() = default;
inline explicit TextSequenceItem(const QPainterPath* glyph, QChar character, PDFReal advance) : glyph(glyph), character(character), advance(advance) { }
inline explicit TextSequenceItem(PDFReal advance) : character(), advance(advance) { }
inline explicit TextSequenceItem(const QByteArray* characterContentStream, double advance) : characterContentStream(characterContentStream), advance(advance) { }
inline explicit TextSequenceItem(const QByteArray* characterContentStream, QChar character, PDFReal advance) : characterContentStream(characterContentStream), character(character), advance(advance) { }
inline bool isContentStream() const { return characterContentStream; }
inline bool isCharacter() const { return glyph; }
@ -354,39 +354,6 @@ public:
virtual FontType getFontType() const override;
};
class PDFType3Font : public PDFFont
{
public:
explicit PDFType3Font(FontDescriptor fontDescriptor,
int firstCharacterIndex,
int lastCharacterIndex,
QMatrix fontMatrix,
std::map<int, QByteArray>&& characterContentStreams,
std::vector<double>&& widths,
const PDFObject& resources);
virtual FontType getFontType() const override;
virtual void dumpFontToTreeItem(QTreeWidgetItem*item) const override;
/// Returns width of the character. If character doesn't exist, then zero is returned.
double getWidth(int characterIndex) const;
/// Return content stream for the character. If character doesn't exist, then nullptr
/// is returned.
const QByteArray* getContentStream(int characterIndex) const;
const QMatrix& getFontMatrix() const { return m_fontMatrix; }
const PDFObject& getResources() const { return m_resources; }
private:
int m_firstCharacterIndex;
int m_lastCharacterIndex;
QMatrix m_fontMatrix;
std::map<int, QByteArray> m_characterContentStreams;
std::vector<double> m_widths;
PDFObject m_resources;
};
/// Font cache which caches both fonts, and realized fonts. Cache has individual limit
/// for fonts, and realized fonts.
class PDFFontCache
@ -542,6 +509,46 @@ private:
bool m_vertical = false;
};
class PDFType3Font : public PDFFont
{
public:
explicit PDFType3Font(FontDescriptor fontDescriptor,
int firstCharacterIndex,
int lastCharacterIndex,
QMatrix fontMatrix,
std::map<int, QByteArray>&& characterContentStreams,
std::vector<double>&& widths,
const PDFObject& resources,
PDFFontCMap toUnicode);
virtual FontType getFontType() const override;
virtual void dumpFontToTreeItem(QTreeWidgetItem*item) const override;
/// Returns width of the character. If character doesn't exist, then zero is returned.
double getWidth(int characterIndex) const;
/// Return content stream for the character. If character doesn't exist, then nullptr
/// is returned.
const QByteArray* getContentStream(int characterIndex) const;
const QMatrix& getFontMatrix() const { return m_fontMatrix; }
const PDFObject& getResources() const { return m_resources; }
const PDFFontCMap& getToUnicode() const { return m_toUnicode; }
/// Returns unicode character for given character index. If unicode mapping is not
/// present, empty (null) character is returned.
QChar getUnicode(int characterIndex) const { return m_toUnicode.getToUnicode(characterIndex); }
private:
int m_firstCharacterIndex;
int m_lastCharacterIndex;
QMatrix m_fontMatrix;
std::map<int, QByteArray> m_characterContentStreams;
std::vector<double> m_widths;
PDFObject m_resources;
PDFFontCMap m_toUnicode;
};
/// Composite font (CID-keyed font)
class PDFType0Font : public PDFFont
{