circuitpython/shared-module/fontio/BuiltinFont.c

80 lines
3.0 KiB
C

/*
* This file is part of the Micro Python project, http://micropython.org/
*
* The MIT License (MIT)
*
* Copyright (c) 2018 Scott Shawcroft for Adafruit Industries
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#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, field_values, NULL);
}