如何更改 reportlab.pdfgen 中的文本/字体颜色 [英] How to change text/font color in reportlab.pdfgen

问题描述

我想在自动生成的 PDF 中使用不同颜色的文本.

I want to use a different color of text in my auto-generated PDF.

根据 reportlab 文档，我所有需要做的是:

According to the reportlab docs all I need to do is:

self.canvas.setFillColorRGB(255,0,0)
self.canvas.drawCentredString(...)

但这没有任何作用.无论如何，文本都是黑色的.

But that doesn't do anything. The text is black no matter what.

推荐答案

如果您复制并粘贴用户指南第 2 部分中的代码.您将得到一个带有彩色文本的彩色矩形.用户指南中的方法可能不是那么清楚，我花了一些时间玩它，我终于知道它是如何工作的.

If you copy and paste the code in User Guide Section 2. You'll get a fancy coloured rectangle with a coloured Text within it. Probably the approach is not that clear in the user guide, I'd spent some time playing with it and I finally know how it works.

您需要想象自己在画画布.在绘制之前，您需要完成所有设置.下面是一个示例，我准备更好地展示如何设置文本样式、绘制线条和绘制矩形，所有这些都可以为它们添加颜色.

You need to imagine yourself drawing a canvas. You need to do all the setup before you draw. Below is an example I prepared to show better how to style a text, draw a line, and draw a rectangle, all with the ability to put colour on them.

from reportlab.pdfgen import canvas

def hello(c):
    from reportlab.lib.units import inch

    #First Example
    c.setFillColorRGB(1,0,0) #choose your font colour
    c.setFont("Helvetica", 30) #choose your font type and font size
    c.drawString(100,100,"Hello World") # write your text

    #Second Example
    c.setStrokeColorRGB(0,1,0.3) #choose your line color
    c.line(2,2,2*inch,2*inch)

    #Third Example
    c.setFillColorRGB(1,1,0) #choose fill colour
    c.rect(4*inch,4*inch,2*inch,3*inch, fill=1) #draw rectangle

c = canvas.Canvas("hello.pdf")

hello(c)
c.showPage()
c.save()

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