如何通过reportlab将表格定位在特定的x和y坐标

Question

我有以下生成pdf的代码：

def colr(x, y, z):
    return (x/255, y/255, z/255)
import reportlab
from reportlab.lib.pagesizes import A4
from reportlab.pdfgen.canvas import Canvas
from reportlab.lib.utils import ImageReader
from reportlab.platypus import SimpleDocTemplate, TableStyle, Paragraph, Image, Spacer, Frame, Paragraph
from reportlab.platypus.tables import Table
from reportlab.lib import colors
from reportlab.lib.styles import getSampleStyleSheet, ParagraphStyle
from reportlab.lib.enums import TA_JUSTIFY, TA_LEFT, TA_CENTER
styles = getSampleStyleSheet()
styleN = styles["BodyText"]
styleN.alignment = TA_LEFT
width, height = A4
logo = '/home/joel/myappointments/appointments/static/clinic/img/logo/logo.png'
elements = []
print(f'Height={height}')
imgw = imgh = 100
im = Image(logo, width=imgw, height=imgh)
im.hAlign = 'LEFT'
elements.append(im)

headstyle = ParagraphStyle(
    name='MyHeader',
    fontName='Helvetica-Bold',
    fontSize=16,
    leading =10
)
doctorstyle = ParagraphStyle(
    name='MyDoctorHeader',
    fontName='Helvetica',
    fontSize=13,
    leading =10
)
data = [[Paragraph("Dr John Doe's ENT Clinic", style = headstyle)], [Paragraph("Dr John Doe", style = doctorstyle)], [Paragraph("ENT Specialist", style = doctorstyle)], [Paragraph("Registration No. ", style = doctorstyle)]]
elements.append(Table(data, repeatRows=1))
line1 = ("Name", "Test", "Age", "20yr")
line2 = ("MRD No.", "18","Date", "14-11-2018")
line3 = ("No.","#", "Doctor", "Dr.John Doe")
data=[line1,line2, line3]
patientdetailstable = Table(data)
patientdetailstable.setStyle(TableStyle([
    ('BACKGROUND', (0, 0), (4, 0), '#CFEAD4'),
    ('BACKGROUND', (0, 2), (4, 2), '#CFEAD4'),
    ('BOX',(0,0),(-1,-1), 0.5, '#CFEAD4'),
    ('GRID',(0,0),(-1,-1), 0.5, colr(12, 43, 8)),
]))
elements.append(patientdetailstable)
elements.append(Spacer(1, 20))
# We use paragraph style because we need to wrap text. We cant directly wrap cells otherwise
line1 = ["Sl.", "Medicine" , "Dose", "Freq", "Durn", "Note"]
drug1 = Paragraph('AUGMED Syrup 30ml (AMOXICILLIN 200MG + CLAVULANATE(CLAVULANIC ACID) 28.5MG)', styleN)
line2 = ["1", drug1, "1 Tab", "1-0-1", "5 days", ""]
line3 = ["2", drug1, "1 Tab", "1-0-1", "5 days", ""]
data=[line1,line2, line3]
for i in range(3,50):
    temp = [str(i), "Some Drug here", "5 ml", "1-0-1", "10 days", "No comments"]
    data.append(temp)

medstable = Table(data, repeatRows=1)
medstable.setStyle(TableStyle([
    ('VALIGN',(0,0),(-1,-1), 'TOP'),
    ('TEXTCOLOR',(0,0),(-1,0),colors.white),
    ('BACKGROUND', (0, 0), (-1, 0), colr(40, 196, 15)),
    ('GRID',(0,1),(-1,-1), 0.5, '#CFEAD4'),
                            ]))
elements.append(medstable)
doc = SimpleDocTemplate('output.pdf', pagesize=A4, rightMargin=20, leftMargin=20, \
    topMargin=20, bottomMargin=20, allowSplitting=1,\
    title="Prescription", author="MyOPIP.com")
doc.build(elements)

一切都很好，除了我需要以下部分：John Doe's ENT clinic 到 Registration No 在徽标的右侧，而不是在其下方。如果我直接使用 Canvas 而不是可流动的 SimpleDocTemplate，我可以轻松设置它的位置。

使用 SimpleDocTemplate，如何任意定位部分？

Answer 1

我找到了一种解决方案，它可能不是最优雅的解决方案。在摆弄了框架和其他可流动的东西之后，我重新阅读了文档，发现我可以将我的表格封装在另一个表格中以进行格式化。因此，我创建了一个单行两列的表，并将图像插入一列，另一表插入第二列。

col1 = Table([[im]])
col2 = Table(data, repeatRows=1)
tblrow1 = Table([[col1, col2]], colWidths=None)
tblrow1.setStyle(
    TableStyle([
        ('ALIGN', (0, 0), (-1, -1), 'LEFT'),
        ('VALIGN', (0, 0), (-1, -1), 'TOP'),
    ]))
elements.append(tblrow1)