232 lines
10 KiB
C
232 lines
10 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 "shared/runtime/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/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, *, dither: bool = False) -> None:
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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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//| :param bool dither: When true, dither the RGB color before converting to the display's color space
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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, size_t n_kw, const mp_obj_t *all_args) {
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enum { ARG_color_count, ARG_dither };
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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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{ MP_QSTR_dither, MP_ARG_KW_ONLY | MP_ARG_BOOL, {.u_bool = false} },
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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_kw_array(n_args, n_kw, all_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, mp_arg_validate_int_range(args[ARG_color_count].u_int, 1, 32767, MP_QSTR_color_count), args[ARG_dither].u_bool);
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return MP_OBJ_FROM_PTR(self);
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}
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//| dither: bool
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//| """When `True` the Palette dithers the output color by adding random
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//| noise when truncating to display bitdepth"""
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STATIC mp_obj_t displayio_palette_obj_get_dither(mp_obj_t self_in) {
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displayio_palette_t *self = MP_OBJ_TO_PTR(self_in);
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return mp_obj_new_bool(common_hal_displayio_palette_get_dither(self));
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}
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MP_DEFINE_CONST_FUN_OBJ_1(displayio_palette_get_dither_obj, displayio_palette_obj_get_dither);
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STATIC mp_obj_t displayio_palette_obj_set_dither(mp_obj_t self_in, mp_obj_t dither) {
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displayio_palette_t *self = MP_OBJ_TO_PTR(self_in);
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common_hal_displayio_palette_set_dither(self, mp_obj_is_true(dither));
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return mp_const_none;
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}
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MP_DEFINE_CONST_FUN_OBJ_2(displayio_palette_set_dither_obj, displayio_palette_obj_set_dither);
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MP_PROPERTY_GETSET(displayio_palette_dither_obj,
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(mp_obj_t)&displayio_palette_get_dither_obj,
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(mp_obj_t)&displayio_palette_set_dither_obj);
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//| def __bool__(self) -> bool: ...
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//| def __len__(self) -> int:
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//| """Returns the number of colors in a Palette"""
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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:
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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:
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return MP_OBJ_NULL; // op not supported
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}
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}
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//| def __getitem__(self, index: int) -> Optional[int]:
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//| r"""Return the pixel color at the given index as an integer."""
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//| ...
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//| def __setitem__(
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//| self, index: int, value: Union[int, ReadableBuffer, Tuple[int, int, int]]
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//| ) -> None:
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//| r"""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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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, 0, &value);
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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: int) -> None: ...
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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 = mp_arg_validate_type_int(palette_index_obj, MP_QSTR_palette_index);
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mp_arg_validate_int_range(palette_index, 0, common_hal_displayio_palette_get_len(self) - 1, MP_QSTR_palette_index);
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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: int) -> None: ...
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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 = mp_arg_validate_type_int(palette_index_obj, MP_QSTR_palette_index);
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palette_index = mp_arg_validate_int_range(palette_index, 0, common_hal_displayio_palette_get_len(self) - 1, MP_QSTR_palette_index);
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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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//| def is_transparent(self, palette_index: int) -> bool:
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//| """Returns `True` if the palette index is transparent. Returns `False` if opaque."""
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//| ...
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//|
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STATIC mp_obj_t displayio_palette_obj_is_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 = mp_arg_validate_type_int(palette_index_obj, MP_QSTR_palette_index);
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palette_index = mp_arg_validate_int_range(palette_index, 0, common_hal_displayio_palette_get_len(self) - 1, MP_QSTR_palette_index);
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return mp_obj_new_bool(common_hal_displayio_palette_is_transparent(self, palette_index));
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}
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MP_DEFINE_CONST_FUN_OBJ_2(displayio_palette_is_transparent_obj, displayio_palette_obj_is_transparent);
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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_dither), MP_ROM_PTR(&displayio_palette_dither_obj) },
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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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{ MP_ROM_QSTR(MP_QSTR_is_transparent), MP_ROM_PTR(&displayio_palette_is_transparent_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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.flags = MP_TYPE_FLAG_EXTENDED,
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.name = MP_QSTR_Palette,
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.make_new = displayio_palette_make_new,
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.locals_dict = (mp_obj_dict_t *)&displayio_palette_locals_dict,
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MP_TYPE_EXTENDED_FIELDS(
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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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),
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};
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