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v/vlib/term/control.v

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// Copyright (c) 2019-2020 Alexander Medvednikov. All rights reserved.
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// Use of this source code is governed by an MIT license
// that can be found in the LICENSE file.
module term
// Sources for ANSI Control Sequences
// https://github.com/RajeshPatkarInstitute/Panim
// https://www.gnu.org/software/screen/manual/html_node/Control-Sequences.html
// https://en.wikipedia.org/wiki/ANSI_escape_code
// Support for Windows
// https://en.wikipedia.org/wiki/ANSI.SYS
// #include <windows.h>
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// C.SetConsoleMode(C.ENABLE_VIRTUAL_TERMINAL_INPUT)
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// Setting cursor to the given position
// x is the x coordinate
// y is the y coordinate
pub fn set_cursor_position(c Coord) {
print('\x1b[$c.y;$c.x' + 'H')
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}
// n is number of cells
// direction: A is up / North
// direction: B is down / South
// direction: C is forward / East
// direction: D is backward / West
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pub fn move(n int, direction string) {
print('\x1b[$n$direction')
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}
pub fn cursor_up(n int) {
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move(n, 'A')
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}
pub fn cursor_down(n int) {
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move(n, 'B')
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}
pub fn cursor_forward(n int) {
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move(n, 'C')
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}
pub fn cursor_back(n int) {
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move(n, 'D')
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}
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// type: 0 -> current cursor position to end of the screen
// type: 1 -> current cursor position to beginning of the screen
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// type: 2 -> clears entire screen
// type: 3 -> clears entire screen and also delete scrollback buffer
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pub fn erase_display(t string) {
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print('\x1b[' + t + 'J')
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}
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pub fn erase_toend() {
erase_display('0')
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}
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pub fn erase_tobeg() {
erase_display('1')
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}
// clears entire screen and returns cursor to top left-corner
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pub fn erase_clear() {
print("\033[H\033[J")
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}
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pub fn erase_del_clear() {
erase_display('3')
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}
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// type: 0 -> current cursor position to end of the line
// type: 1 -> current cursor position to beginning of the line
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// type: 2 -> clears entire line
// Note: Cursor position does not change
pub fn erase_line(t string) {
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print('\x1b[' + t + 'K')
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}
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pub fn erase_line_toend() {
erase_line('0')
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}
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pub fn erase_line_tobeg() {
erase_line('1')
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}
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pub fn erase_line_clear() {
erase_line('2')
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}
// Will make cursor appear if not visible
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pub fn show_cursor() {
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print('\x1b[?25h')
}
// Will make cursor invisible
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pub fn hide_cursor() {
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print('\x1b[?25l')
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}