如何使用终端颜色调色板和curses [英] How to use terminal color palette with curses

问题描述

我无法让终端调色板使用curses。

I can't get the terminal color palette to work with curses.

import curses

def main(stdscr):
    curses.use_default_colors()
    for i in range(0,7):
        stdscr.addstr("Hello", curses.color_pair(i))
    stdscr.getch()

curses.wrapper(main)

此python脚本产生以下屏幕：

This python script yields the following screen:

但是，我在gnome终端调色板中有更多的颜色。

However, I do have more colors in my gnome-terminal palette. How can I access them within curses?

推荐答案

以下我是根据经验找出的。

The following I figured out by experience.

• 有256种颜色（由前8位定义）。


• 其他位用于附加属性，如突出显示。


• 将数字-1作为颜色传递回默认背景颜色和前景颜色。


• 颜色对0（mod 256） （-1，-1）。


• 颜色0到15是终端调色板颜色。

• There are 256 colors (defined by the first 8 bits).
• The other bits are used for additional attributes, such as highlighting.
• Passing the number -1 as color falls back to the default background and foreground colors.
• The color pair 0 (mod 256) is fixed on (-1, -1).
• The colors 0 till 15 are the terminal palette colors.

请考虑以下测试代码。
将此添加到您的 .bashrc ：

Consider the following testing code. Add this to your .bashrc:

# Set proper $TERM if we are running gnome-terminal
if [ "$COLORTERM" == "gnome-terminal" ]
then
    TERM=xterm-256color
fi

将它放在python文件中并运行。

Put this in a python file and run it.

import curses

def main(stdscr):
    curses.start_color()
    curses.use_default_colors()
    for i in range(0, curses.COLORS):
        curses.init_pair(i + 1, i, -1)
    try:
        for i in range(0, 255):
            stdscr.addstr(str(i), curses.color_pair(i))
    except curses.ERR:
        # End of screen reached
        pass
    stdscr.getch()

curses.wrapper(main)

运行它将产生以下输出。

Running it will yield the following output.

如你所见，颜色对1-16是前景颜色的终端颜色调色板。所以这是我们可以初始化终端调色板，并使用它。

As you see, the colors pairs 1-16 are the terminal color palette for foreground colors. So this is how we can initialize the terminal color palette, and use it.

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