mirror of
https://github.com/trezor/trezor-firmware.git
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089db2cadf
[no changelog]
150 lines
3.9 KiB
C
150 lines
3.9 KiB
C
/*
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* This file is part of the Trezor project, https://trezor.io/
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*
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* Copyright (c) SatoshiLabs
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <trezor_model.h>
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#include <trezor_rtl.h>
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#include <gfx/fonts.h>
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#include <gfx/gfx_draw.h>
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#include <gfx/terminal.h>
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#include <io/display.h>
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#include <rtl/mini_printf.h>
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#define TERMINAL_COLS (DISPLAY_RESX / 6)
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#define TERMINAL_ROWS (DISPLAY_RESY / 8)
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static char terminal_fb[TERMINAL_ROWS][TERMINAL_COLS];
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static gfx_color_t terminal_fgcolor = COLOR_WHITE;
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static gfx_color_t terminal_bgcolor = COLOR_BLACK;
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// set colors for display_print function
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void term_set_color(gfx_color_t fgcolor, gfx_color_t bgcolor) {
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terminal_fgcolor = fgcolor;
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terminal_bgcolor = bgcolor;
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}
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// Font_Bitmap contains 96 (0x20 - 0x7F) 5x7 glyphs
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// Each glyph consists of 5 bytes (each byte represents one column)
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//
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// This function converts the glyph into the format compatible
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// with `display_copy_mono1p()` functions.
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static uint64_t term_glyph_bits(char ch) {
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union {
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uint64_t u64;
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uint8_t bytes[8];
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} result = {0};
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if (ch > 32 && (uint8_t)ch < 128) {
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const uint8_t *b = &Font_Bitmap[(ch - ' ') * 5];
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for (int y = 0; y < 7; y++) {
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uint8_t mask = 1 << y;
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result.bytes[y] |= ((b[0] & mask) ? 128 : 0) + ((b[1] & mask) ? 64 : 0) +
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((b[2] & mask) ? 32 : 0) + ((b[3] & mask) ? 16 : 0) +
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((b[4] & mask) ? 8 : 0);
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}
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}
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return result.u64;
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}
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// Redraws specified rows to the display
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static void term_redraw_rows(int start_row, int row_count) {
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uint64_t glyph_bits = 0;
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gfx_bitblt_t bb = {
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.height = 8,
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.width = 6,
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.dst_row = NULL,
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.dst_x = 0,
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.dst_y = 0,
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.dst_stride = 0,
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.src_row = &glyph_bits,
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.src_x = 0,
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.src_y = 0,
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.src_stride = 8,
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.src_fg = terminal_fgcolor,
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.src_bg = terminal_bgcolor,
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};
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for (int y = start_row; y < start_row + row_count; y++) {
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bb.dst_y = y * 8;
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for (int x = 0; x < TERMINAL_COLS; x++) {
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glyph_bits = term_glyph_bits(terminal_fb[y][x]);
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bb.dst_x = x * 6;
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display_copy_mono1p(&bb);
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}
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}
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}
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// display text using bitmap font
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void term_print(const char *text, int textlen) {
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static uint8_t row = 0, col = 0;
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// determine text length if not provided
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if (textlen < 0) {
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textlen = strlen(text);
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}
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// print characters to internal buffer (terminal_fb)
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for (int i = 0; i < textlen; i++) {
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switch (text[i]) {
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case '\r':
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break;
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case '\n':
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row++;
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col = 0;
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break;
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default:
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terminal_fb[row][col] = text[i];
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col++;
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break;
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}
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if (col >= TERMINAL_COLS) {
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col = 0;
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row++;
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}
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if (row >= TERMINAL_ROWS) {
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for (int j = 0; j < TERMINAL_ROWS - 1; j++) {
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memcpy(terminal_fb[j], terminal_fb[j + 1], TERMINAL_COLS);
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}
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memset(terminal_fb[TERMINAL_ROWS - 1], 0, TERMINAL_COLS);
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row = TERMINAL_ROWS - 1;
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}
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}
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term_redraw_rows(0, TERMINAL_ROWS);
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display_refresh();
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}
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// variadic term_print
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void term_printf(const char *fmt, ...) {
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if (!strchr(fmt, '%')) {
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term_print(fmt, strlen(fmt));
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} else {
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va_list va;
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va_start(va, fmt);
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char buf[256] = {0};
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int len = mini_vsnprintf(buf, sizeof(buf), fmt, va);
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term_print(buf, len);
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va_end(va);
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}
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}
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