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https://github.com/RGBCube/serenity
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53 lines
2 KiB
C++
53 lines
2 KiB
C++
/*
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* Copyright (c) 2022, Matthew Olsson <mattco@serenityos.org>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#pragma once
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#include <AK/HashMap.h>
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#include <AK/Tuple.h>
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#include <LibGfx/Font/OpenType/Font.h>
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#include <LibGfx/Forward.h>
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#include <LibPDF/Document.h>
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#include <LibPDF/Encoding.h>
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namespace PDF {
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class Renderer;
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// PDF files don't need most of the data in OpenType fonts, and even contain invalid data for
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// these tables in some cases. Skip reading these tables.
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constexpr u32 pdf_skipped_opentype_tables = OpenType::FontOptions::SkipTables::Name | OpenType::FontOptions::SkipTables::Hmtx | OpenType::FontOptions::SkipTables::OS2;
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class PDFFont : public RefCounted<PDFFont> {
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public:
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static PDFErrorOr<NonnullRefPtr<PDFFont>> create(Document*, NonnullRefPtr<DictObject> const&, float font_size);
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virtual ~PDFFont() = default;
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virtual void set_font_size(float font_size) = 0;
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virtual PDFErrorOr<Gfx::FloatPoint> draw_string(Gfx::Painter&, Gfx::FloatPoint, ByteString const&, Renderer const&) = 0;
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// TABLE 5.20 Font flags
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bool is_fixed_pitch() const { return m_flags & (1 << (1 - 1)); }
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bool is_serif() const { return m_flags & (1 << (2 - 1)); }
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bool is_symbolic() const { return m_flags & (1 << (3 - 1)); }
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bool is_script() const { return m_flags & (1 << (4 - 1)); }
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// Note: No bit position 5.
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bool is_nonsymbolic() const { return m_flags & (1 << (6 - 1)); }
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bool is_italic() const { return m_flags & (1 << (7 - 1)); }
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// Note: Big jump in bit positions.
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bool is_all_cap() const { return m_flags & (1 << (17 - 1)); }
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bool is_small_cap() const { return m_flags & (1 << (18 - 1)); }
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bool is_force_bold() const { return m_flags & (1 << (19 - 1)); }
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protected:
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virtual PDFErrorOr<void> initialize(Document* document, NonnullRefPtr<DictObject> const& dict, float font_size);
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static PDFErrorOr<NonnullRefPtr<Gfx::Font>> replacement_for(StringView name, float font_size);
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unsigned m_flags { 0 };
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};
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}
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