230 lines
9.8 KiB
C
230 lines
9.8 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) 2019 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/terminalio/Terminal.h"
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#include "shared-module/fontio/BuiltinFont.h"
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#include "shared-bindings/displayio/TileGrid.h"
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#include "shared-bindings/terminalio/Terminal.h"
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#if CIRCUITPY_STATUS_BAR
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#include "shared-bindings/supervisor/__init__.h"
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#include "shared-bindings/supervisor/StatusBar.h"
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#endif
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void terminalio_terminal_clear_status_bar(terminalio_terminal_obj_t *self) {
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if (self->status_bar) {
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common_hal_displayio_tilegrid_set_all_tiles(self->status_bar, 0);
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}
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}
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void common_hal_terminalio_terminal_construct(terminalio_terminal_obj_t *self,
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displayio_tilegrid_t *scroll_area, const fontio_builtinfont_t *font,
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displayio_tilegrid_t *status_bar) {
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self->cursor_x = 0;
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self->cursor_y = 0;
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self->font = font;
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self->scroll_area = scroll_area;
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self->status_bar = status_bar;
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self->status_x = 0;
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self->status_y = 0;
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self->first_row = 0;
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common_hal_displayio_tilegrid_set_all_tiles(self->scroll_area, 0);
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if (self->status_bar) {
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common_hal_displayio_tilegrid_set_all_tiles(self->status_bar, 0);
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}
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common_hal_displayio_tilegrid_set_top_left(self->scroll_area, 0, 1);
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}
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size_t common_hal_terminalio_terminal_write(terminalio_terminal_obj_t *self, const byte *data, size_t len, int *errcode) {
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// Make sure the terminal is initialized before we do anything with it.
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if (self->scroll_area == NULL) {
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return len;
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}
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#if CIRCUITPY_STATUS_BAR
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// Skip the status bar OSC sequence if it's disabled for the display.
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const bool status_bar_write_ok =
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shared_module_supervisor_status_bar_get_display(&shared_module_supervisor_status_bar_obj) ||
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!supervisor_status_bar_get_update_in_progress(&shared_module_supervisor_status_bar_obj);
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#endif
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const byte *i = data;
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uint16_t start_y = self->cursor_y;
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while (i < data + len) {
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unichar c = utf8_get_char(i);
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i = utf8_next_char(i);
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if (self->in_osc_command) {
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if (c == 0x1b && i[0] == '\\') {
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self->in_osc_command = false;
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self->status_x = 0;
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self->status_y = 0;
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i += 1;
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} else if (
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#if CIRCUITPY_STATUS_BAR
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status_bar_write_ok &&
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#endif
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self->osc_command == 0 &&
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self->status_bar != NULL &&
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self->status_y < self->status_bar->height_in_tiles) {
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uint8_t tile_index = fontio_builtinfont_get_glyph_index(self->font, c);
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if (tile_index != 0xff) {
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// Clear the tile grid before we start putting new info.
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if (self->status_x == 0 && self->status_y == 0) {
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common_hal_displayio_tilegrid_set_all_tiles(self->status_bar, 0);
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}
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common_hal_displayio_tilegrid_set_tile(self->status_bar, self->status_x, self->status_y, tile_index);
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self->status_x++;
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if (self->status_x >= self->status_bar->width_in_tiles) {
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self->status_y++;
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self->status_x %= self->status_bar->width_in_tiles;
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}
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}
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}
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continue;
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}
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// Always handle ASCII.
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if (c < 128) {
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if (c >= 0x20 && c <= 0x7e) {
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uint8_t tile_index = fontio_builtinfont_get_glyph_index(self->font, c);
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common_hal_displayio_tilegrid_set_tile(self->scroll_area, self->cursor_x, self->cursor_y, tile_index);
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self->cursor_x++;
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} else if (c == '\r') {
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self->cursor_x = 0;
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} else if (c == '\n') {
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self->cursor_y++;
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// Commands below are used by MicroPython in the REPL
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} else if (c == '\b') {
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if (self->cursor_x > 0) {
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self->cursor_x--;
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}
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} else if (c == 0x1b) {
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// Handle commands of the form [ESC].<digits><command-char> where . is not yet known.
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uint16_t n = 0;
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uint8_t j = 1;
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for (; j < 6; j++) {
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if ('0' <= i[j] && i[j] <= '9') {
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n = n * 10 + (i[j] - '0');
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} else {
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c = i[j];
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break;
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}
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}
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if (i[0] == '[') {
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if (i[1] == 'K') {
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// Clear the rest of the line.
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for (uint16_t k = self->cursor_x; k < self->scroll_area->width_in_tiles; k++) {
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common_hal_displayio_tilegrid_set_tile(self->scroll_area, k, self->cursor_y, 0);
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}
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i += 2;
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} else {
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if (c == 'D') {
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if (n > self->cursor_x) {
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self->cursor_x = 0;
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} else {
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self->cursor_x -= n;
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}
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}
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if (c == 'J') {
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if (n == 2) {
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common_hal_displayio_tilegrid_set_top_left(self->scroll_area, 0, 0);
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self->cursor_x = self->cursor_y = start_y = 0;
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n = 0;
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common_hal_displayio_tilegrid_set_all_tiles(self->scroll_area, 0);
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}
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}
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if (c == ';') {
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uint16_t m = 0;
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for (++j; j < 9; j++) {
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if ('0' <= i[j] && i[j] <= '9') {
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m = m * 10 + (i[j] - '0');
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} else {
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c = i[j];
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break;
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}
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}
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if (c == 'H') {
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if (n > 0) {
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n--;
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}
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if (m > 0) {
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m--;
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}
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if (n >= self->scroll_area->height_in_tiles) {
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n = self->scroll_area->height_in_tiles - 1;
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}
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if (m >= self->scroll_area->width_in_tiles) {
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m = self->scroll_area->width_in_tiles - 1;
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}
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n = (n + self->scroll_area->top_left_y) % self->scroll_area->height_in_tiles;
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self->cursor_x = m;
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self->cursor_y = n;
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start_y = self->cursor_y;
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}
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}
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i += j + 1;
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continue;
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}
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} else if (i[0] == ']' && c == ';') {
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self->in_osc_command = true;
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self->osc_command = n;
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i += j + 1;
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}
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}
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} else {
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uint8_t tile_index = fontio_builtinfont_get_glyph_index(self->font, c);
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if (tile_index != 0xff) {
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common_hal_displayio_tilegrid_set_tile(self->scroll_area, self->cursor_x, self->cursor_y, tile_index);
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self->cursor_x++;
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}
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}
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if (self->cursor_x >= self->scroll_area->width_in_tiles) {
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self->cursor_y++;
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self->cursor_x %= self->scroll_area->width_in_tiles;
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}
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if (self->cursor_y >= self->scroll_area->height_in_tiles) {
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self->cursor_y %= self->scroll_area->height_in_tiles;
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}
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if (self->cursor_y != start_y) {
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// clear the new row in case of scroll up
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if (self->cursor_y == self->scroll_area->top_left_y) {
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for (uint16_t j = 0; j < self->scroll_area->width_in_tiles; j++) {
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common_hal_displayio_tilegrid_set_tile(self->scroll_area, j, self->cursor_y, 0);
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}
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common_hal_displayio_tilegrid_set_top_left(self->scroll_area, 0, (self->cursor_y + self->scroll_area->height_in_tiles + 1) % self->scroll_area->height_in_tiles);
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}
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start_y = self->cursor_y;
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}
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}
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return i - data;
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}
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bool common_hal_terminalio_terminal_ready_to_tx(terminalio_terminal_obj_t *self) {
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return self->scroll_area != NULL;
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}
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