// This file is part of the CircuitPython project: https://circuitpython.org
//
// SPDX-FileCopyrightText: Copyright (c) 2018 Scott Shawcroft for Adafruit Industries
//
// SPDX-License-Identifier: MIT

#include "shared-bindings/fontio/BuiltinFont.h"


#include "shared-bindings/fontio/Glyph.h"

#include "py/objnamedtuple.h"

mp_obj_t common_hal_fontio_builtinfont_get_bitmap(const fontio_builtinfont_t *self) {
    return MP_OBJ_FROM_PTR(self->bitmap);
}

mp_obj_t common_hal_fontio_builtinfont_get_bounding_box(const fontio_builtinfont_t *self) {
    mp_obj_t *items = m_new(mp_obj_t, 2);
    items[0] = MP_OBJ_NEW_SMALL_INT(self->width);
    items[1] = MP_OBJ_NEW_SMALL_INT(self->height);
    return mp_obj_new_tuple(2, items);
}

uint8_t fontio_builtinfont_get_glyph_index(const fontio_builtinfont_t *self, mp_uint_t codepoint) {
    if (codepoint >= 0x20 && codepoint <= 0x7e) {
        return codepoint - 0x20;
    }
    // Do a linear search of the mapping for unicode.
    const byte *j = self->unicode_characters;
    uint8_t k = 0;
    while (j < self->unicode_characters + self->unicode_characters_len) {
        unichar potential_c = utf8_get_char(j);
        j = utf8_next_char(j);
        if (codepoint == potential_c) {
            return 0x7f - 0x20 + k;
        }
        k++;
    }
    return 0xff;
}

mp_obj_t common_hal_fontio_builtinfont_get_glyph(const fontio_builtinfont_t *self, mp_uint_t codepoint) {
    uint8_t glyph_index = fontio_builtinfont_get_glyph_index(self, codepoint);
    if (glyph_index == 0xff) {
        return mp_const_none;
    }
    mp_obj_t field_values[8] = {
        MP_OBJ_FROM_PTR(self->bitmap),
        MP_OBJ_NEW_SMALL_INT(glyph_index),
        MP_OBJ_NEW_SMALL_INT(self->width),
        MP_OBJ_NEW_SMALL_INT(self->height),
        MP_OBJ_NEW_SMALL_INT(0),
        MP_OBJ_NEW_SMALL_INT(0),
        MP_OBJ_NEW_SMALL_INT(self->width),
        MP_OBJ_NEW_SMALL_INT(0)
    };
    return namedtuple_make_new((const mp_obj_type_t *)&fontio_glyph_type, 8, 0, field_values);
}