mirror of
https://github.com/LadybirdBrowser/ladybird.git
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128 lines
3.3 KiB
C++
128 lines
3.3 KiB
C++
/*
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* Copyright (c) 2020, Stephan Unverwerth <s.unverwerth@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/MappedFile.h>
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#include <AK/RefCounted.h>
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#include <AK/RefPtr.h>
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#include <AK/String.h>
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#include <AK/Types.h>
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#include <LibGfx/Bitmap.h>
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#include <LibGfx/Size.h>
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namespace Gfx {
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// FIXME: Make a MutableGlyphBitmap buddy class for FontEditor instead?
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class GlyphBitmap {
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public:
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GlyphBitmap() = default;
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GlyphBitmap(const unsigned* rows, IntSize size)
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: m_rows(rows)
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, m_size(size)
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{
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}
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const unsigned* rows() const { return m_rows; }
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unsigned row(unsigned index) const { return m_rows[index]; }
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bool bit_at(int x, int y) const { return row(y) & (1 << x); }
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void set_bit_at(int x, int y, bool b)
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{
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auto& mutable_row = const_cast<unsigned*>(m_rows)[y];
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if (b)
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mutable_row |= 1 << x;
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else
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mutable_row &= ~(1 << x);
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}
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IntSize size() const { return m_size; }
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int width() const { return m_size.width(); }
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int height() const { return m_size.height(); }
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private:
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const unsigned* m_rows { nullptr };
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IntSize m_size { 0, 0 };
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};
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class Glyph {
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public:
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Glyph(const GlyphBitmap& glyph_bitmap, int left_bearing, int advance, int ascent)
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: m_glyph_bitmap(glyph_bitmap)
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, m_left_bearing(left_bearing)
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, m_advance(advance)
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, m_ascent(ascent)
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{
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}
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Glyph(RefPtr<Bitmap> bitmap, int left_bearing, int advance, int ascent)
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: m_bitmap(bitmap)
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, m_left_bearing(left_bearing)
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, m_advance(advance)
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, m_ascent(ascent)
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{
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}
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bool is_glyph_bitmap() const { return !m_bitmap; }
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GlyphBitmap glyph_bitmap() const { return m_glyph_bitmap; }
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RefPtr<Bitmap> bitmap() const { return m_bitmap; }
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int left_bearing() const { return m_left_bearing; }
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int advance() const { return m_advance; }
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int ascent() const { return m_ascent; }
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private:
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GlyphBitmap m_glyph_bitmap;
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RefPtr<Bitmap> m_bitmap;
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int m_left_bearing;
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int m_advance;
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int m_ascent;
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};
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class Font : public RefCounted<Font> {
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public:
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virtual NonnullRefPtr<Font> clone() const = 0;
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virtual ~Font() {};
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virtual u8 presentation_size() const = 0;
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virtual u16 weight() const = 0;
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virtual Glyph glyph(u32 code_point) const = 0;
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virtual bool contains_glyph(u32 code_point) const = 0;
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virtual u8 glyph_width(size_t ch) const = 0;
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virtual int glyph_or_emoji_width(u32 code_point) const = 0;
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virtual u8 glyph_height() const = 0;
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virtual int x_height() const = 0;
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virtual u8 min_glyph_width() const = 0;
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virtual u8 max_glyph_width() const = 0;
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virtual u8 glyph_fixed_width() const = 0;
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virtual u8 baseline() const = 0;
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virtual u8 mean_line() const = 0;
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virtual int width(const StringView&) const = 0;
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virtual int width(const Utf8View&) const = 0;
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virtual int width(const Utf32View&) const = 0;
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virtual String name() const = 0;
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virtual bool is_fixed_width() const = 0;
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virtual u8 glyph_spacing() const = 0;
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virtual size_t glyph_count() const = 0;
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virtual String family() const = 0;
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virtual String variant() const = 0;
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virtual String qualified_name() const = 0;
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virtual const Font& bold_variant() const = 0;
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};
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}
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