60 lines
2 KiB
C
60 lines
2 KiB
C
// This file is part of the CircuitPython project: https://circuitpython.org
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//
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// SPDX-FileCopyrightText: Copyright (c) 2018 Scott Shawcroft for Adafruit Industries
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//
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// SPDX-License-Identifier: MIT
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#include "shared-bindings/fontio/BuiltinFont.h"
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#include "shared-bindings/fontio/Glyph.h"
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#include "py/objnamedtuple.h"
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mp_obj_t common_hal_fontio_builtinfont_get_bitmap(const fontio_builtinfont_t *self) {
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return MP_OBJ_FROM_PTR(self->bitmap);
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}
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mp_obj_t common_hal_fontio_builtinfont_get_bounding_box(const fontio_builtinfont_t *self) {
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// Stack allocation is ok because tuple copies the values out.
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mp_obj_t items[2];
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items[0] = MP_OBJ_NEW_SMALL_INT(self->width);
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items[1] = MP_OBJ_NEW_SMALL_INT(self->height);
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return mp_obj_new_tuple(2, items);
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}
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uint8_t fontio_builtinfont_get_glyph_index(const fontio_builtinfont_t *self, mp_uint_t codepoint) {
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if (codepoint >= 0x20 && codepoint <= 0x7e) {
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return codepoint - 0x20;
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}
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// Do a linear search of the mapping for unicode.
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const byte *j = self->unicode_characters;
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uint8_t k = 0;
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while (j < self->unicode_characters + self->unicode_characters_len) {
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unichar potential_c = utf8_get_char(j);
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j = utf8_next_char(j);
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if (codepoint == potential_c) {
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return 0x7f - 0x20 + k;
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}
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k++;
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}
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return 0xff;
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}
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mp_obj_t common_hal_fontio_builtinfont_get_glyph(const fontio_builtinfont_t *self, mp_uint_t codepoint) {
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uint8_t glyph_index = fontio_builtinfont_get_glyph_index(self, codepoint);
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if (glyph_index == 0xff) {
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return mp_const_none;
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}
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mp_obj_t field_values[8] = {
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MP_OBJ_FROM_PTR(self->bitmap),
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MP_OBJ_NEW_SMALL_INT(glyph_index),
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MP_OBJ_NEW_SMALL_INT(self->width),
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MP_OBJ_NEW_SMALL_INT(self->height),
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MP_OBJ_NEW_SMALL_INT(0),
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MP_OBJ_NEW_SMALL_INT(0),
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MP_OBJ_NEW_SMALL_INT(self->width),
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MP_OBJ_NEW_SMALL_INT(0)
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};
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return namedtuple_make_new((const mp_obj_type_t *)&fontio_glyph_type, 8, 0, field_values);
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}
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