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#pragma once
#include <SharedGraphics/Rect.h>
#include <AK/Retainable.h>
#include <AK/RetainPtr.h>
#include <AK/AKString.h>
#include <AK/MappedFile.h>
#include <AK/Types.h>
// FIXME: Make a MutableGlyphBitmap buddy class for FontEditor instead?
class GlyphBitmap {
friend class Font;
public:
const unsigned* rows() const { return m_rows; }
unsigned row(unsigned index) const { return m_rows[index]; }
bool bit_at(int x, int y) const { return row(y) & (1 << x); }
void set_bit_at(int x, int y, bool b)
{
auto& mutable_row = const_cast<unsigned*>(m_rows)[y];
if (b)
mutable_row |= 1 << x;
else
mutable_row &= ~(1 << x);
}
Size size() const { return m_size; }
int width() const { return m_size.width(); }
int height() const { return m_size.height(); }
private:
GlyphBitmap(const unsigned* rows, Size size)
: m_rows(rows)
, m_size(size)
{
}
const unsigned* m_rows { nullptr };
Size m_size;
};
class Font : public Retainable<Font> {
public:
static Font& default_font();
static Font& default_bold_font();
static Font& default_fixed_width_font();
RetainPtr<Font> clone() const;
static RetainPtr<Font> load_from_file(const String& path);
bool write_to_file(const String& path);
~Font();
GlyphBitmap glyph_bitmap(char ch) const { return GlyphBitmap(&m_rows[(byte)ch * m_glyph_height], { glyph_width(ch), m_glyph_height }); }
byte glyph_width(char ch) const { return m_fixed_width ? m_glyph_width : m_glyph_widths[(byte)ch]; }
byte glyph_height() const { return m_glyph_height; }
byte min_glyph_width() const { return m_min_glyph_width; }
byte max_glyph_width() const { return m_max_glyph_width; }
byte glyph_spacing() const { return m_fixed_width ? 0 : 1; }
int width(const String& string) const;
int width(const char*, int) const;
String name() const { return m_name; }
void set_name(const String& name) { m_name = name; }
bool is_fixed_width() const { return m_fixed_width; }
void set_fixed_width(bool b) { m_fixed_width = b; }
void set_glyph_width(char ch, byte width)
{
ASSERT(m_glyph_widths);
m_glyph_widths[(byte)ch] = width;
}
private:
Font(const String& name, unsigned* rows, byte* widths, bool is_fixed_width, byte glyph_width, byte glyph_height);
static RetainPtr<Font> load_from_memory(const byte*);
String m_name;
unsigned* m_rows { nullptr };
byte* m_glyph_widths { nullptr };
MappedFile m_mapped_file;
byte m_glyph_width { 0 };
byte m_glyph_height { 0 };
byte m_min_glyph_width { 0 };
byte m_max_glyph_width { 0 };
bool m_fixed_width { false };
};
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