python - 使用 ReportLab 旋转文档(竖排文本)

Question

我正在尝试获取类似于以下代码片段的内容来实际绘制旋转 90 度的文档。 pagesize最终已经是我想要的样子了，但是文字还是水平的。如何旋转文本使其垂直？

style = getSampleStyleSheet()
normal = style["Normal"]
normal.alignment = TA_CENTER
normal.fontName = "Helvetica"
normal.fontSize = 15

pdf = SimpleDocTemplate("testplatypus.pdf", pagesize = (80, 250), rightMargin=10, leftMargin=10, topMargin=20,bottomMargin=20)
story = []
text = "I really need this to be wrapped and vertical!"

para = Paragraph(text, normal)
story.append(para)
pdf.build(story)

Answer 1

这是这个问题的最高谷歌结果，所以我想我会发布一个更好的解决方案。我的回答直接来自 here

如果您使用的是文档模板，则可以使用非常轻量级的 Flowable，它将在特定表格单元格中创建垂直文本。

# rotatedtext.py
from reportlab.platypus.flowables import Flowable


class verticalText(Flowable):

'''Rotates a text in a table cell.'''

def __init__(self, text):
    Flowable.__init__(self)
    self.text = text

def draw(self):
    canvas = self.canv
    canvas.rotate(90)
    fs = canvas._fontsize
    canvas.translate(1, -fs/1.2)  # canvas._leading?
    canvas.drawString(0, 0, self.text)

def wrap(self, aW, aH):
    canv = self.canv
    fn, fs = canv._fontname, canv._fontsize
    return canv._leading, 1 + canv.stringWidth(self.text, fn, fs)

然后在文档中使用它:

# vertical_text_table.py
from reportlab.pdfbase import pdfmetrics
from reportlab.pdfbase.ttfonts import TTFont
from reportlab.lib import colors
from reportlab.lib.colors import HexColor
from reportlab.lib.pagesizes import letter
from reportlab.lib.styles import getSampleStyleSheet
from reportlab.lib.units import inch
from reportlab.platypus import (
      BaseDocTemplate, Frame, Paragraph, NextPageTemplate,
      PageBreak, PageTemplate, Image, Table, TableStyle, Spacer)
from rotatedtext import verticalText

document = BaseDocTemplate(
    'Vertical.pdf')

Elements = []

titleFrame_1 = Frame(
    0.5*inch, 0.75*inch, 7*inch, 9*inch, id='col1', showBoundary=0)
titleTemplate_1 = PageTemplate(
    id='OneCol', frames=titleFrame_1)
document.addPageTemplates([titleTemplate_1])

cw = [1.2*inch] + [1*inch]*6
rh = [0.25*inch] + [.6*inch] + [0.25*inch]*7

data = [
    ['Some', 'Reporting', '', 'Data', '', 'Here', ''],
    ['', verticalText('Vertical'), verticalText('Text'),
        verticalText('Vertical'), verticalText('Text'),
        verticalText('Vertical'), verticalText('Text')],
    ['Row1', '0', '0', '69', '803', '20751', '11627'],
    ['Row2', '0', '0', '1', '0', '1096', '103'],
    ['Row3', '0', '0', '0', '0', '233', '1'],
    ['Row4', '0', '0', '0', '0', '694', '38'],
    ['Row5', '0', '0', '23', '2', '1319', '2'],
    ['Row6', '0', '0', '0', '0', '0', '0'],
    ['TOTAL', '0', '0', '93', '805', '24093', '11771'],
    ]

ts = [
    ('GRID', (0, 0), (-1, -1), 0.5, colors.black),
    ('SPAN', (1, 0), (2, 0)),
    ('SPAN', (3, 0), (4, 0)),
    ('SPAN', (5, 0), (6, 0)),
    ('SPAN', (0, 0), (0, 1)),
    ('ALIGN', (0, 0), (-1, 1), 'CENTER'),
    ('ALIGN', (0, 2), (-1, -1), 'RIGHT'),
    ('VALIGN', (0, 0), (-1, -2), 'MIDDLE'),
    ('FONT', (0, 0), (-1, 1), 'Helvetica-Bold', 7, 7),
    ('FONT', (0, 2), (0, -2), 'Helvetica-Bold', 7, 7),
    ('FONT', (1, 2), (-1, -2), 'Helvetica', 7, 7),
    ('FONT', (0, -1), (-1, -1), 'Helvetica-Bold', 8, 8),
    ('TEXTCOLOR', (0, -1), (-1, -1), colors.white),
    ('BACKGROUND', (0, -1), (-1, -1), colors.black),
]

t = Table(
    data, style=ts,
    colWidths=cw, rowHeights=rh)

Elements.append(t)
document.build(Elements)

给出: