/* * This file is part of the Micro Python project, http://micropython.org/ * * The MIT License (MIT) * * Copyright (c) 2017 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/displayio/Palette.h" #include #include "lib/utils/context_manager_helpers.h" #include "py/binary.h" #include "py/objproperty.h" #include "py/runtime.h" #include "shared-bindings/microcontroller/Pin.h" #include "shared-bindings/util.h" #include "supervisor/shared/translate.h" //| .. currentmodule:: displayio //| //| :class:`Palette` -- Stores a mapping from bitmap pixel values to display colors //| =============================================================================== //| //| Manage updating a display over SPI four wire protocol in the background while Python code runs. //| It doesn't handle display initialization. //| //| .. warning:: This will be changed before 4.0.0. Consider it very experimental. //| //| .. class:: Palette(color_count) //| //| Create a Palette object to store a set number of colors. //| //| :param int color_count: The number of colors in the Palette // TODO(tannewt): Add support for other color formats. // TODO(tannewt): Add support for 8-bit alpha blending. //| STATIC mp_obj_t displayio_palette_make_new(const mp_obj_type_t *type, size_t n_args, size_t n_kw, const mp_obj_t *pos_args) { mp_arg_check_num(n_args, n_kw, 1, 1, true); mp_map_t kw_args; mp_map_init_fixed_table(&kw_args, n_kw, pos_args + n_args); enum { ARG_color_count }; static const mp_arg_t allowed_args[] = { { MP_QSTR_color_count, MP_ARG_INT | MP_ARG_REQUIRED }, }; mp_arg_val_t args[MP_ARRAY_SIZE(allowed_args)]; mp_arg_parse_all(n_args, pos_args, &kw_args, MP_ARRAY_SIZE(allowed_args), allowed_args, args); displayio_palette_t *self = m_new_obj(displayio_palette_t); self->base.type = &displayio_palette_type; common_hal_displayio_palette_construct(self, args[ARG_color_count].u_int); return MP_OBJ_FROM_PTR(self); } STATIC mp_obj_t palette_subscr(mp_obj_t self_in, mp_obj_t index_in, mp_obj_t value) { if (value == MP_OBJ_NULL) { // delete item return MP_OBJ_NULL; // op not supported } else { displayio_palette_t *self = MP_OBJ_TO_PTR(self_in); if (MP_OBJ_IS_TYPE(index_in, &mp_type_slice)) { return MP_OBJ_NULL; // Slicing not supported. Use a duplicate Palette to swap multiple colors atomically. } else { if (value == MP_OBJ_SENTINEL) { return MP_OBJ_NULL; // index read is not supported } else { size_t index = mp_get_index(&displayio_palette_type, self->max_value, index_in, false); uint32_t color; mp_int_t int_value; mp_buffer_info_t bufinfo; if (mp_get_buffer(value, &bufinfo, MP_BUFFER_READ)) { if (bufinfo.typecode != 'b' && bufinfo.typecode != 'B' && bufinfo.typecode != BYTEARRAY_TYPECODE) { mp_raise_ValueError(translate("color buffer must be a bytearray or array of type 'b' or 'B'")); } uint8_t* buf = bufinfo.buf; if (bufinfo.len == 3 || bufinfo.len == 4) { color = buf[0] << 16 | buf[1] << 8 | buf[2]; } else { mp_raise_ValueError(translate("color buffer must be 3 bytes (RGB) or 4 bytes (RGBA)")); } } else if (mp_obj_get_int_maybe(value, &int_value)) { if (int_value < 0 || int_value > 0xffffff) { mp_raise_TypeError(translate("color must be between 0x000000 and 0xffffff")); } color = int_value; } else { mp_raise_TypeError(translate("color buffer must be a buffer or int")); } common_hal_displayio_palette_set_color(self, index, color); return mp_const_none; } } } } //| .. method:: make_transparent(value) //| STATIC mp_obj_t displayio_palette_obj_make_transparent(mp_obj_t self_in, mp_obj_t value_obj) { displayio_palette_t *self = MP_OBJ_TO_PTR(self_in); mp_int_t value; if (!mp_obj_get_int_maybe(value_obj, &value)) { mp_raise_ValueError(translate("value should be an int")); } common_hal_displayio_palette_make_transparent(self, value); return mp_const_none; } MP_DEFINE_CONST_FUN_OBJ_2(displayio_palette_make_transparent_obj, displayio_palette_obj_make_transparent); //| .. method:: make_opaque(value) //| STATIC mp_obj_t displayio_palette_obj_make_opaque(mp_obj_t self_in, mp_obj_t value_obj) { displayio_palette_t *self = MP_OBJ_TO_PTR(self_in); mp_int_t value; if (!mp_obj_get_int_maybe(value_obj, &value)) { mp_raise_ValueError(translate("value should be an int")); } common_hal_displayio_palette_make_opaque(self, value); return mp_const_none; } MP_DEFINE_CONST_FUN_OBJ_2(displayio_palette_make_opaque_obj, displayio_palette_obj_make_opaque); STATIC const mp_rom_map_elem_t displayio_palette_locals_dict_table[] = { { MP_ROM_QSTR(MP_QSTR_make_transparent), MP_ROM_PTR(&displayio_palette_make_transparent_obj) }, { MP_ROM_QSTR(MP_QSTR_make_opaque), MP_ROM_PTR(&displayio_palette_make_opaque_obj) }, }; STATIC MP_DEFINE_CONST_DICT(displayio_palette_locals_dict, displayio_palette_locals_dict_table); const mp_obj_type_t displayio_palette_type = { { &mp_type_type }, .name = MP_QSTR_Palette, .make_new = displayio_palette_make_new, .subscr = palette_subscr, .locals_dict = (mp_obj_dict_t*)&displayio_palette_locals_dict, };