226 lines
7.6 KiB
C
226 lines
7.6 KiB
C
/*
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* This file is part of the MicroPython 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-module/displayio/display_core.h"
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#include "py/gc.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/time/__init__.h"
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#include "shared-module/displayio/__init__.h"
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#include "supervisor/shared/display.h"
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#include "supervisor/shared/tick.h"
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#include <stdint.h>
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#include <string.h>
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#define DISPLAYIO_CORE_DEBUG(...) (void)0
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// #define DISPLAYIO_CORE_DEBUG(...) mp_printf(&mp_plat_print __VA_OPT__(,) __VA_ARGS__)
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void displayio_display_core_construct(displayio_display_core_t *self,
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uint16_t width, uint16_t height, uint16_t rotation,
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uint16_t color_depth, bool grayscale, bool pixels_in_byte_share_row, uint8_t bytes_per_cell, bool reverse_pixels_in_byte, bool reverse_bytes_in_word) {
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self->colorspace.depth = color_depth;
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self->colorspace.grayscale = grayscale;
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self->colorspace.grayscale_bit = 8 - color_depth;
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self->colorspace.pixels_in_byte_share_row = pixels_in_byte_share_row;
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self->colorspace.bytes_per_cell = bytes_per_cell;
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self->colorspace.reverse_pixels_in_byte = reverse_pixels_in_byte;
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self->colorspace.reverse_bytes_in_word = reverse_bytes_in_word;
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self->colorspace.dither = false;
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self->current_group = NULL;
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self->last_refresh = 0;
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supervisor_start_terminal(width, height);
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self->width = width;
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self->height = height;
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displayio_display_core_set_rotation(self, rotation);
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}
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void displayio_display_core_set_rotation(displayio_display_core_t *self,
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int rotation) {
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int height = self->height;
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int width = self->width;
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rotation = rotation % 360;
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self->rotation = rotation;
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self->transform.x = 0;
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self->transform.y = 0;
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self->transform.scale = 1;
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self->transform.mirror_x = false;
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self->transform.mirror_y = false;
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self->transform.transpose_xy = false;
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if (rotation == 0 || rotation == 180) {
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if (rotation == 180) {
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self->transform.mirror_x = true;
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self->transform.mirror_y = true;
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}
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} else {
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self->transform.transpose_xy = true;
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if (rotation == 270) {
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self->transform.mirror_y = true;
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} else {
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self->transform.mirror_x = true;
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}
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}
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self->area.x1 = 0;
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self->area.y1 = 0;
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self->area.next = NULL;
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self->transform.dx = 1;
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self->transform.dy = 1;
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if (self->transform.transpose_xy) {
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self->area.x2 = height;
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self->area.y2 = width;
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if (self->transform.mirror_x) {
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self->transform.x = height;
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self->transform.dx = -1;
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}
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if (self->transform.mirror_y) {
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self->transform.y = width;
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self->transform.dy = -1;
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}
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} else {
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self->area.x2 = width;
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self->area.y2 = height;
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if (self->transform.mirror_x) {
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self->transform.x = width;
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self->transform.dx = -1;
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}
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if (self->transform.mirror_y) {
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self->transform.y = height;
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self->transform.dy = -1;
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}
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}
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}
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bool displayio_display_core_set_root_group(displayio_display_core_t *self, displayio_group_t *root_group) {
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if (root_group == NULL) {
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// Show nothing on the display
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}
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if (root_group == self->current_group) {
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return true;
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}
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if (root_group != NULL && root_group->in_group) {
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return false;
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}
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if (self->current_group != NULL) {
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self->current_group->in_group = false;
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}
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if (root_group != NULL) {
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displayio_group_update_transform(root_group, &self->transform);
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root_group->in_group = true;
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}
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self->current_group = root_group;
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self->full_refresh = true;
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return true;
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}
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uint16_t displayio_display_core_get_width(displayio_display_core_t *self) {
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return self->width;
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}
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uint16_t displayio_display_core_get_height(displayio_display_core_t *self) {
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return self->height;
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}
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void displayio_display_core_set_dither(displayio_display_core_t *self, bool dither) {
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self->colorspace.dither = dither;
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}
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bool displayio_display_core_get_dither(displayio_display_core_t *self) {
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return self->colorspace.dither;
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}
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bool displayio_display_core_start_refresh(displayio_display_core_t *self) {
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if (self->refresh_in_progress) {
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return false;
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}
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self->refresh_in_progress = true;
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self->last_refresh = supervisor_ticks_ms64();
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return true;
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}
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void displayio_display_core_finish_refresh(displayio_display_core_t *self) {
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if (self->current_group != NULL) {
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DISPLAYIO_CORE_DEBUG("displayiocore group_finish_refresh\n");
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displayio_group_finish_refresh(self->current_group);
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}
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self->full_refresh = false;
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self->refresh_in_progress = false;
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self->last_refresh = supervisor_ticks_ms64();
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}
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void release_display_core(displayio_display_core_t *self) {
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if (self->current_group != NULL) {
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self->current_group->in_group = false;
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}
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}
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void displayio_display_core_collect_ptrs(displayio_display_core_t *self) {
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gc_collect_ptr(self->current_group);
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}
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bool displayio_display_core_fill_area(displayio_display_core_t *self, displayio_area_t *area, uint32_t *mask, uint32_t *buffer) {
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if (self->current_group != NULL) {
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return displayio_group_fill_area(self->current_group, &self->colorspace, area, mask, buffer);
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}
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return false;
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}
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bool displayio_display_core_clip_area(displayio_display_core_t *self, const displayio_area_t *area, displayio_area_t *clipped) {
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bool overlaps = displayio_area_compute_overlap(&self->area, area, clipped);
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if (!overlaps) {
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return false;
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}
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// Expand the area if we have multiple pixels per byte and we need to byte
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// align the bounds.
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if (self->colorspace.depth < 8) {
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uint8_t pixels_per_byte = 8 / self->colorspace.depth * self->colorspace.bytes_per_cell;
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if (self->colorspace.pixels_in_byte_share_row) {
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if (clipped->x1 % pixels_per_byte != 0) {
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clipped->x1 -= clipped->x1 % pixels_per_byte;
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}
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if (clipped->x2 % pixels_per_byte != 0) {
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clipped->x2 += pixels_per_byte - clipped->x2 % pixels_per_byte;
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}
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} else {
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if (clipped->y1 % pixels_per_byte != 0) {
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clipped->y1 -= clipped->y1 % pixels_per_byte;
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}
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if (clipped->y2 % pixels_per_byte != 0) {
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clipped->y2 += pixels_per_byte - clipped->y2 % pixels_per_byte;
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}
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}
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}
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return true;
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}
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