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LibPDF: Read /Flags off font descriptors

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This commit is contained in:
Nico Weber 2024-02-21 14:21:59 -05:00 • committed by Andreas Kling
parent a61f09a010
commit 207717982c
3 changed files with 23 additions and 1 deletions
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1
Userland/Libraries/LibPDF/CommonNames.h
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@ -86,6 +86,7 @@
X(FitH) \
X(FitR) \
X(FitV) \
X(Flags) \
X(FlateDecode) \
X(Font) \
X(FontDescriptor) \

8
Userland/Libraries/LibPDF/Fonts/PDFFont.cpp
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@ -55,8 +55,14 @@ PDFErrorOr<NonnullRefPtr<PDFFont>> PDFFont::create(Document* document, NonnullRe
return font.release_nonnull();
}
PDFErrorOr<void> PDFFont::initialize(Document*, NonnullRefPtr<DictObject> const&, float)
PDFErrorOr<void> PDFFont::initialize(Document* document, NonnullRefPtr<DictObject> const& dict, float)
{
if (dict->contains(CommonNames::FontDescriptor)) {
auto descriptor = TRY(dict->get_dict(document, CommonNames::FontDescriptor));
if (descriptor->contains(CommonNames::Flags))
m_flags = descriptor->get_value(CommonNames::Flags).to_int();
}
return {};
}

15
Userland/Libraries/LibPDF/Fonts/PDFFont.h
View file

@ -30,9 +30,24 @@ public:
virtual void set_font_size(float font_size) = 0;
virtual PDFErrorOr<Gfx::FloatPoint> draw_string(Gfx::Painter&, Gfx::FloatPoint, ByteString const&, Renderer const&) = 0;
// TABLE 5.20 Font flags
bool is_fixed_pitch() const { return m_flags & (1 << (1 - 1)); }
bool is_serif() const { return m_flags & (1 << (2 - 1)); }
bool is_symbolic() const { return m_flags & (1 << (3 - 1)); }
bool is_script() const { return m_flags & (1 << (4 - 1)); }
// Note: No bit position 5.
bool is_nonsymbolic() const { return m_flags & (1 << (6 - 1)); }
bool is_italic() const { return m_flags & (1 << (7 - 1)); }
// Note: Big jump in bit positions.
bool is_all_cap() const { return m_flags & (1 << (17 - 1)); }
bool is_small_cap() const { return m_flags & (1 << (18 - 1)); }
bool is_force_bold() const { return m_flags & (1 << (19 - 1)); }
protected:
virtual PDFErrorOr<void> initialize(Document* document, NonnullRefPtr<DictObject> const& dict, float font_size);
static PDFErrorOr<NonnullRefPtr<Gfx::Font>> replacement_for(StringView name, float font_size);
unsigned m_flags { 0 };
};
}