57 lines
No EOL
1.9 KiB
C++
57 lines
No EOL
1.9 KiB
C++
#ifndef _customfont__hpp__included__
|
|
#define _customfont__hpp__included__
|
|
|
|
#include <vector>
|
|
#include <cstdint>
|
|
#include <cstdlib>
|
|
#include <iostream>
|
|
#include <stdexcept>
|
|
#include <map>
|
|
#include "framebuffer.hpp"
|
|
|
|
class ligature_key
|
|
{
|
|
public:
|
|
ligature_key(const std::vector<uint32_t>& key) throw(std::bad_alloc);
|
|
const std::vector<uint32_t>& get() const throw() { return ikey; }
|
|
size_t length() const throw() { return ikey.size(); }
|
|
bool operator<(const ligature_key& key) const throw();
|
|
bool operator<=(const ligature_key& key) const throw() { return !(key < *this); }
|
|
bool operator==(const ligature_key& key) const throw();
|
|
bool operator!=(const ligature_key& key) const throw() { return !(key == *this); }
|
|
bool operator>=(const ligature_key& key) const throw() { return !(*this < key); }
|
|
bool operator>(const ligature_key& key) const throw() { return key < *this; }
|
|
private:
|
|
std::vector<uint32_t> ikey;
|
|
};
|
|
|
|
struct font_glyph_data
|
|
{
|
|
font_glyph_data();
|
|
font_glyph_data(std::istream& s);
|
|
unsigned width;
|
|
unsigned height;
|
|
unsigned stride;
|
|
std::vector<uint32_t> glyph; //Bitpacked, element breaks between rows.
|
|
void render(framebuffer<false>& fb, int32_t x, int32_t y, premultiplied_color fg, premultiplied_color bg,
|
|
premultiplied_color hl) const;
|
|
void render(framebuffer<true>& fb, int32_t x, int32_t y, premultiplied_color fg, premultiplied_color bg,
|
|
premultiplied_color hl) const;
|
|
};
|
|
|
|
struct custom_font
|
|
{
|
|
public:
|
|
custom_font();
|
|
custom_font(const std::string& file);
|
|
void add(const ligature_key& key, const font_glyph_data& glyph) throw(std::bad_alloc);
|
|
ligature_key best_ligature_match(const std::vector<uint32_t>& codepoints, size_t start) const
|
|
throw(std::bad_alloc);
|
|
const font_glyph_data& lookup_glyph(const ligature_key& key) const throw();
|
|
unsigned get_rowadvance() const throw() { return rowadvance; }
|
|
private:
|
|
std::map<ligature_key, font_glyph_data> glyphs;
|
|
unsigned rowadvance;
|
|
};
|
|
|
|
#endif |