polybar/include/cairo/utils.hpp

71 lines
1.5 KiB
C++

#pragma once
#include <cairo/cairo-ft.h>
#include <list>
#include "common.hpp"
POLYBAR_NS
namespace cairo {
namespace utils {
/**
* \brief RAII wrapper used acquire cairo_device_t
*/
class device_lock {
public:
explicit device_lock(cairo_device_t* device);
~device_lock();
operator bool() const;
operator cairo_device_t*() const;
private:
cairo_device_t* m_device{nullptr};
};
/**
* \brief RAII wrapper used to access the underlying
* FT_Face of a scaled font face
*/
class ft_face_lock {
public:
explicit ft_face_lock(cairo_scaled_font_t* font);
~ft_face_lock();
operator FT_Face() const;
private:
cairo_scaled_font_t* m_font;
FT_Face m_face;
};
/**
* \brief Unicode character containing converted codepoint
* and details on where its position in the source string
*/
struct unicode_character {
explicit unicode_character();
unsigned long codepoint;
int offset;
int length;
};
using unicode_charlist = std::list<unicode_character>;
/**
* \see <cairo/cairo.h>
*/
cairo_operator_t str2operator(const string& mode, cairo_operator_t fallback);
/**
* \brief Create a UCS-4 codepoint from a utf-8 encoded string
*/
bool utf8_to_ucs4(const unsigned char* src, unicode_charlist& result_list);
/**
* \brief Convert a UCS-4 codepoint to a utf-8 encoded string
*/
size_t ucs4_to_utf8(char* utf8, unsigned int ucs);
}
}
POLYBAR_NS_END