193 lines
7.8 KiB
C
193 lines
7.8 KiB
C
/*
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* This file is part of the Micro Python project, http://micropython.org/
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*
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* The MIT License (MIT)
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*
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* Copyright (c) 2017 Scott Shawcroft for Adafruit Industries
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#include "shared-bindings/displayio/Palette.h"
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#include <stdint.h>
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#include "lib/utils/context_manager_helpers.h"
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#include "py/binary.h"
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#include "py/objproperty.h"
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#include "py/runtime.h"
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#include "shared-bindings/microcontroller/Pin.h"
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#include "shared-bindings/util.h"
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#include "supervisor/shared/translate.h"
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//| class Palette:
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//| """Map a pixel palette_index to a full color. Colors are transformed to the display's format internally to
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//| save memory."""
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//|
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//| def __init__(self, color_count: int):
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//| """Create a Palette object to store a set number of colors.
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//|
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//| :param int color_count: The number of colors in the Palette"""
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//| ...
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//|
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// TODO(tannewt): Add support for other color formats.
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// TODO(tannewt): Add support for 8-bit alpha blending.
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//|
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STATIC mp_obj_t displayio_palette_make_new(const mp_obj_type_t *type, size_t n_args, const mp_obj_t *pos_args, mp_map_t *kw_args) {
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enum { ARG_color_count };
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static const mp_arg_t allowed_args[] = {
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{ MP_QSTR_color_count, MP_ARG_REQUIRED | MP_ARG_INT },
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};
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mp_arg_val_t args[MP_ARRAY_SIZE(allowed_args)];
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mp_arg_parse_all(n_args, pos_args, kw_args, MP_ARRAY_SIZE(allowed_args), allowed_args, args);
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displayio_palette_t *self = m_new_obj(displayio_palette_t);
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self->base.type = &displayio_palette_type;
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common_hal_displayio_palette_construct(self, args[ARG_color_count].u_int);
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return MP_OBJ_FROM_PTR(self);
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}
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//| def __len__(self, ) -> Any:
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//| """Returns the number of colors in a Palette"""
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//| ...
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//|
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STATIC mp_obj_t group_unary_op(mp_unary_op_t op, mp_obj_t self_in) {
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displayio_palette_t *self = MP_OBJ_TO_PTR(self_in);
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switch (op) {
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case MP_UNARY_OP_BOOL: return mp_const_true;
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case MP_UNARY_OP_LEN:
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return MP_OBJ_NEW_SMALL_INT(common_hal_displayio_palette_get_len(self));
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default: return MP_OBJ_NULL; // op not supported
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}
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}
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//| def __setitem__(self, index: Any, value: Any) -> Any:
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//| """Sets the pixel color at the given index. The index should be an integer in the range 0 to color_count-1.
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//|
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//| The value argument represents a color, and can be from 0x000000 to 0xFFFFFF (to represent an RGB value).
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//| Value can be an int, bytes (3 bytes (RGB) or 4 bytes (RGB + pad byte)), bytearray,
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//| or a tuple or list of 3 integers.
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//|
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//| This allows you to::
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//|
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//| palette[0] = 0xFFFFFF # set using an integer
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//| palette[1] = b'\xff\xff\x00' # set using 3 bytes
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//| palette[2] = b'\xff\xff\x00\x00' # set using 4 bytes
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//| palette[3] = bytearray(b'\x00\x00\xFF') # set using a bytearay of 3 or 4 bytes
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//| palette[4] = (10, 20, 30) # set using a tuple of 3 integers"""
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//| ...
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//|
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STATIC mp_obj_t palette_subscr(mp_obj_t self_in, mp_obj_t index_in, mp_obj_t value) {
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if (value == MP_OBJ_NULL) {
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// delete item
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return MP_OBJ_NULL; // op not supported
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}
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// Slicing not supported. Use a duplicate Palette to swap multiple colors atomically.
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if (MP_OBJ_IS_TYPE(index_in, &mp_type_slice)) {
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return MP_OBJ_NULL;
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}
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displayio_palette_t *self = MP_OBJ_TO_PTR(self_in);
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size_t index = mp_get_index(&displayio_palette_type, self->color_count, index_in, false);
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// index read
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if (value == MP_OBJ_SENTINEL) {
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return MP_OBJ_NEW_SMALL_INT(common_hal_displayio_palette_get_color(self, index));
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}
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// Convert a tuple or list to a bytearray.
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if (MP_OBJ_IS_TYPE(value, &mp_type_tuple) ||
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MP_OBJ_IS_TYPE(value, &mp_type_list)) {
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value = mp_type_bytes.make_new(&mp_type_bytes, 1, &value, NULL);
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}
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uint32_t color;
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mp_int_t int_value;
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mp_buffer_info_t bufinfo;
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if (mp_get_buffer(value, &bufinfo, MP_BUFFER_READ)) {
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if (bufinfo.typecode != 'b' && bufinfo.typecode != 'B' && bufinfo.typecode != BYTEARRAY_TYPECODE) {
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mp_raise_ValueError(translate("color buffer must be a bytearray or array of type 'b' or 'B'"));
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}
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uint8_t* buf = bufinfo.buf;
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if (bufinfo.len == 3 || bufinfo.len == 4) {
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color = buf[0] << 16 | buf[1] << 8 | buf[2];
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} else {
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mp_raise_ValueError(translate("color buffer must be 3 bytes (RGB) or 4 bytes (RGB + pad byte)"));
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}
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} else if (mp_obj_get_int_maybe(value, &int_value)) {
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if (int_value < 0 || int_value > 0xffffff) {
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mp_raise_TypeError(translate("color must be between 0x000000 and 0xffffff"));
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}
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color = int_value;
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} else {
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mp_raise_TypeError(translate("color buffer must be a buffer, tuple, list, or int"));
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}
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common_hal_displayio_palette_set_color(self, index, color);
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return mp_const_none;
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}
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//| def make_transparent(self, palette_index: Any) -> Any: ...
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//|
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STATIC mp_obj_t displayio_palette_obj_make_transparent(mp_obj_t self_in, mp_obj_t palette_index_obj) {
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displayio_palette_t *self = MP_OBJ_TO_PTR(self_in);
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mp_int_t palette_index;
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if (!mp_obj_get_int_maybe(palette_index_obj, &palette_index)) {
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mp_raise_ValueError(translate("palette_index should be an int"));
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}
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common_hal_displayio_palette_make_transparent(self, palette_index);
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return mp_const_none;
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}
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MP_DEFINE_CONST_FUN_OBJ_2(displayio_palette_make_transparent_obj, displayio_palette_obj_make_transparent);
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//| def make_opaque(self, palette_index: Any) -> Any: ...
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//|
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STATIC mp_obj_t displayio_palette_obj_make_opaque(mp_obj_t self_in, mp_obj_t palette_index_obj) {
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displayio_palette_t *self = MP_OBJ_TO_PTR(self_in);
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mp_int_t palette_index;
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if (!mp_obj_get_int_maybe(palette_index_obj, &palette_index)) {
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mp_raise_ValueError(translate("palette_index should be an int"));
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}
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common_hal_displayio_palette_make_opaque(self, palette_index);
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return mp_const_none;
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}
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MP_DEFINE_CONST_FUN_OBJ_2(displayio_palette_make_opaque_obj, displayio_palette_obj_make_opaque);
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STATIC const mp_rom_map_elem_t displayio_palette_locals_dict_table[] = {
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{ MP_ROM_QSTR(MP_QSTR_make_transparent), MP_ROM_PTR(&displayio_palette_make_transparent_obj) },
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{ MP_ROM_QSTR(MP_QSTR_make_opaque), MP_ROM_PTR(&displayio_palette_make_opaque_obj) },
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};
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STATIC MP_DEFINE_CONST_DICT(displayio_palette_locals_dict, displayio_palette_locals_dict_table);
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const mp_obj_type_t displayio_palette_type = {
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{ &mp_type_type },
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.name = MP_QSTR_Palette,
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.make_new = displayio_palette_make_new,
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.subscr = palette_subscr,
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.unary_op = group_unary_op,
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.getiter = mp_obj_new_generic_iterator,
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.locals_dict = (mp_obj_dict_t*)&displayio_palette_locals_dict,
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};
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