99 lines
4.0 KiB
C
99 lines
4.0 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) 2018 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 "shared-module/displayio/ColorConverter.h"
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void common_hal_displayio_palette_construct(displayio_palette_t* self, uint16_t color_count) {
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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), false);
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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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}
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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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}
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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].luma = displayio_colorconverter_compute_luma(color);
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self->colors[palette_index].rgb565 = displayio_colorconverter_compute_rgb565(color);
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uint8_t chroma = displayio_colorconverter_compute_chroma(color);
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self->colors[palette_index].chroma = chroma;
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self->colors[palette_index].hue = displayio_colorconverter_compute_hue(color);
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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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bool displayio_palette_get_color(displayio_palette_t *self, const _displayio_colorspace_t* colorspace, uint32_t palette_index, uint32_t* color) {
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if (palette_index > self->color_count || self->colors[palette_index].transparent) {
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return false; // returns opaque
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}
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if (colorspace->tricolor) {
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uint8_t luma = self->colors[palette_index].luma;
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*color = luma >> (8 - colorspace->depth);
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// Chroma 0 means the color is a gray and has no hue so never color based on it.
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if (self->colors[palette_index].chroma <= 16) {
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if (!colorspace->grayscale) {
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*color = 0;
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}
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return true;
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}
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uint8_t pixel_hue = self->colors[palette_index].hue;
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displayio_colorconverter_compute_tricolor(colorspace, pixel_hue, luma, color);
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} else if (colorspace->grayscale) {
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*color = self->colors[palette_index].luma >> (8 - colorspace->depth);
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} else {
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*color = self->colors[palette_index].rgb565;
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}
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return true;
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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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