gtk3 +和python rgba转换为十六进制 [英] gtk3+ and python rgba convert to hex

问题描述

i使用gtk3我发现它使用rgba表示颜色，但是(红色，绿色，蓝色，alpha)不是 0-255 之间的整数，而是浮动的点号在 0-1.0 之间，所以我不知道如何从rgba转换为十六进制，反之亦然

i using gtk3 i found that it use rgba for representing color, but the (red,green,blue,alpha) are not integer between 0-255 but floating point number between 0-1.0, so i don't know how to convert from rgba to hex and vice-versa

我已经尝试过此代码，但是它似乎不起作用:

i have tried this code but its seem to not work :

def convert_to_hex(rgba_color) :
red = str(hex(int(rgba_color.red*255)))[2:].capitalize()
green = str(hex(int(rgba_color.green*255)))[2:].capitalize()
blue = str(hex(int(rgba_color.blue*255)))[2:].capitalize()

return '0x' + red + green + blue

推荐答案

假设问题在于，数字只有1位数时，应该有前导零.这是一个解决方案.

Assuming the problem is that the number should have leading zeros when they are only 1 digit. Here is a solution for that.

def convert_to_hex(rgba_color) :
    red = int(rgba_color.red*255)
    green = int(rgba_color.green*255)
    blue = int(rgba_color.blue*255)
    return '0x{r:02x}{g:02x}{b:02x}'.format(r=red,g=green,b=blue)

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