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LibPDF: Add very basic support for Adobe Type 1 font rendering

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Previously we would draw all text, no matter what font type, as
Liberation Serif, which results in things like ugly character spacing.

We now have partial support for drawing Type 1 glyphs, which are part of
a PostScript font program. We completely ignore hinting for now, which
results in ugly looking characters at low resolutions, but gain support
for a large number of typefaces, including most of the default fonts
used in TeX.
This commit is contained in:
Julian Offenhäuser 2022-08-25 11:06:21 +02:00 • committed by Andreas Kling
parent e6f29302a7
commit b14f0950a5
9 changed files with 752 additions and 16 deletions
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2
Userland/Libraries/LibPDF/Encoding.h
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@ -632,6 +632,7 @@ struct CharDescriptor {
class Encoding : public RefCounted<Encoding> {
public:
static PDFErrorOr<NonnullRefPtr<Encoding>> create(HashMap<u16, CharDescriptor> descriptors);
static PDFErrorOr<NonnullRefPtr<Encoding>> from_object(Document*, NonnullRefPtr<Object> const&);
static NonnullRefPtr<Encoding> standard_encoding();
@ -642,6 +643,7 @@ public:
static NonnullRefPtr<Encoding> zapf_encoding();
HashMap<u16, CharDescriptor> const& descriptors() const { return m_descriptors; }
HashMap<String, u16> const& name_mapping() const { return m_name_mapping; }
CharDescriptor const& get_char_code_descriptor(u16 char_code) const;