85 lines
2.7 KiB
Markdown
85 lines
2.7 KiB
Markdown
# Quickstart
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The V `term` module is a module designed to provide the building blocks
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for building very simple TUI apps.
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For more complex apps, you should really look at the `term.input` module,
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as it includes terminal events, is easier to use and is much more performant for large draws.
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# Use
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You can use the `term` module to either color the output on a terminal
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or to decide on where to put the output in your terminal.
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For example let's make a simple program which prints colored text in the middle of the terminal.
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```v
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import term
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import os
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fn main() {
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term.clear() // clears the content in the terminal
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width, height := term.get_terminal_size() // get the size of the terminal
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term.set_cursor_position(x: width / 2, y: height / 2) // now we point the cursor to the middle of the terminal
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println(term.strikethrough(term.bright_green('hello world'))) // Print green text
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term.set_cursor_position(x: 0, y: height) // Sets the position of the cursor to the bottom of the terminal
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// Keep prompting until the user presses the q key
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for {
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if var := os.input_opt('press q to quit: ') {
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if var != 'q' {
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continue
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}
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break
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}
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println('')
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break
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}
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println('Goodbye.')
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}
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```
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This simple program covers many of the principal aspects of the `term ` module.
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# API
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Here are some functions you should be aware of in the `term `module:
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```v oksyntax
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import term
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// returns the height and the width of the terminal
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width, height := term.get_terminal_size()
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// returns the string as green text to be printed on stdout
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term.ok_message('cool')
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// returns the string as red text to be printed on stdout
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term.fail_message('oh, no')
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// returns the string as yellow text to be printed on stdout
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term.warning_message('be warned')
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// clears the entire terminal and leaves a blank one
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term.clear()
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// colors the output of the output, the available colors are: black,blue,yellow,green,cyan,gray,bright_blue,bright_green,bright_red,bright_black,bright_cyan
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term.yellow('submarine')
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// transforms the given string into bold text
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term.bold('and beautiful')
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// puts a strikethrough into the given string
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term.strikethrough('the core of the problem')
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// underlines the given string
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term.underline('important')
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// colors the background of the output following the given color
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// the available colors are: black, blue, yellow, green, cyan, gray
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term.bg_green('field')
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// sets the position of the cursor at a given place in the terminal
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term.set_cursor_position(x: 5, y: 10)
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// moves the cursor up
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term.cursor_up()
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// moves the cursor down
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term.cursor_down()
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// moves the cursor to the right
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term.cursor_forward()
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// moves the cursor to the left
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term.cursor_back()
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// shows the cursor
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term.show_cursor()
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// hides the cursor
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term.hide_cursor()
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```
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