92 lines
3.4 KiB
C
92 lines
3.4 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/displayio/Palette.h"
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#include "shared-module/displayio/ColorConverter.h"
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void common_hal_displayio_palette_construct(displayio_palette_t *self, uint16_t color_count, bool dither) {
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self->color_count = color_count;
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self->colors = (_displayio_color_t *)m_malloc(color_count * sizeof(_displayio_color_t));
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self->dither = dither;
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}
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void common_hal_displayio_palette_set_dither(displayio_palette_t *self, bool dither) {
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self->dither = dither;
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}
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bool common_hal_displayio_palette_get_dither(displayio_palette_t *self) {
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return self->dither;
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}
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void common_hal_displayio_palette_make_opaque(displayio_palette_t *self, uint32_t palette_index) {
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self->colors[palette_index].transparent = false;
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self->needs_refresh = true;
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}
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void common_hal_displayio_palette_make_transparent(displayio_palette_t *self, uint32_t palette_index) {
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self->colors[palette_index].transparent = true;
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self->needs_refresh = true;
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}
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bool common_hal_displayio_palette_is_transparent(displayio_palette_t *self, uint32_t palette_index) {
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return self->colors[palette_index].transparent;
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}
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uint32_t common_hal_displayio_palette_get_len(displayio_palette_t *self) {
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return self->color_count;
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}
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void common_hal_displayio_palette_set_color(displayio_palette_t *self, uint32_t palette_index, uint32_t color) {
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if (self->colors[palette_index].rgb888 == color) {
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return;
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}
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self->colors[palette_index].rgb888 = color;
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self->colors[palette_index].cached_colorspace = NULL;
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self->needs_refresh = true;
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}
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uint32_t common_hal_displayio_palette_get_color(displayio_palette_t *self, uint32_t palette_index) {
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return self->colors[palette_index].rgb888;
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}
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void displayio_palette_get_color(displayio_palette_t *self, const _displayio_colorspace_t *colorspace, const displayio_input_pixel_t *input_pixel, displayio_output_pixel_t *output_color) {
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uint32_t palette_index = input_pixel->pixel;
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if (palette_index > self->color_count || self->colors[palette_index].transparent) {
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output_color->opaque = false;
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return;
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}
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// Cache results when not dithering.
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_displayio_color_t *color = &self->colors[palette_index];
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// Check the grayscale settings because EPaperDisplay will change them on
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// the same object.
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if (!self->dither &&
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color->cached_colorspace == colorspace &&
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color->cached_colorspace_grayscale_bit == colorspace->grayscale_bit &&
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color->cached_colorspace_grayscale == colorspace->grayscale) {
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output_color->pixel = self->colors[palette_index].cached_color;
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return;
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}
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displayio_input_pixel_t rgb888_pixel = *input_pixel;
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rgb888_pixel.pixel = self->colors[palette_index].rgb888;
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displayio_convert_color(colorspace, self->dither, &rgb888_pixel, output_color);
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if (!self->dither) {
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color->cached_colorspace = colorspace;
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color->cached_color = output_color->pixel;
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color->cached_colorspace_grayscale = colorspace->grayscale;
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color->cached_colorspace_grayscale_bit = colorspace->grayscale_bit;
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}
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}
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bool displayio_palette_needs_refresh(displayio_palette_t *self) {
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return self->needs_refresh;
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}
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void displayio_palette_finish_refresh(displayio_palette_t *self) {
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self->needs_refresh = false;
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}
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