mirror of
https://github.com/LadybirdBrowser/ladybird.git
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94ca55cefd
As suggested by Joshua, this commit adds the 2-clause BSD license as a comment block to the top of every source file. For the first pass, I've just added myself for simplicity. I encourage everyone to add themselves as copyright holders of any file they've added or modified in some significant way. If I've added myself in error somewhere, feel free to replace it with the appropriate copyright holder instead. Going forward, all new source files should include a license header.
129 lines
4.2 KiB
C++
129 lines
4.2 KiB
C++
/*
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* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice, this
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* list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#pragma once
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#include <AK/String.h>
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#include <AK/MappedFile.h>
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#include <AK/RefPtr.h>
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#include <AK/RefCounted.h>
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#include <AK/Types.h>
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#include <LibDraw/Rect.h>
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#include <AK/Utf8View.h>
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// FIXME: Make a MutableGlyphBitmap buddy class for FontEditor instead?
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class GlyphBitmap {
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friend class Font;
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public:
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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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Size 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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GlyphBitmap(const unsigned* rows, Size 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* m_rows { nullptr };
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Size m_size;
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};
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class Font : public RefCounted<Font> {
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public:
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static Font& default_font();
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static Font& default_bold_font();
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static Font& default_fixed_width_font();
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static Font& default_bold_fixed_width_font();
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RefPtr<Font> clone() const;
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static RefPtr<Font> load_from_file(const StringView& path);
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bool write_to_file(const StringView& path);
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~Font();
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GlyphBitmap glyph_bitmap(char ch) const { return GlyphBitmap(&m_rows[(u8)ch * m_glyph_height], { glyph_width(ch), m_glyph_height }); }
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u8 glyph_width(char ch) const { return m_fixed_width ? m_glyph_width : m_glyph_widths[(u8)ch]; }
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int glyph_or_emoji_width(u32 codepoint) const;
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u8 glyph_height() const { return m_glyph_height; }
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u8 min_glyph_width() const { return m_min_glyph_width; }
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u8 max_glyph_width() const { return m_max_glyph_width; }
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int width(const StringView&) const;
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int width(const Utf8View&) const;
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String name() const { return m_name; }
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void set_name(const StringView& name) { m_name = name; }
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bool is_fixed_width() const { return m_fixed_width; }
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void set_fixed_width(bool b) { m_fixed_width = b; }
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u8 glyph_spacing() const { return m_glyph_spacing; }
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void set_glyph_spacing(u8 spacing) { m_glyph_spacing = spacing; }
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void set_glyph_width(char ch, u8 width)
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{
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ASSERT(m_glyph_widths);
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m_glyph_widths[(u8)ch] = width;
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}
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private:
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Font(const StringView& name, unsigned* rows, u8* widths, bool is_fixed_width, u8 glyph_width, u8 glyph_height, u8 glyph_spacing);
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static RefPtr<Font> load_from_memory(const u8*);
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String m_name;
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unsigned* m_rows { nullptr };
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u8* m_glyph_widths { nullptr };
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MappedFile m_mapped_file;
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u8 m_glyph_width { 0 };
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u8 m_glyph_height { 0 };
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u8 m_min_glyph_width { 0 };
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u8 m_max_glyph_width { 0 };
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u8 m_glyph_spacing { 0 };
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bool m_fixed_width { false };
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};
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