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直到Registration No徽标的右侧，而不是其下方。如果我直接在 Canvas 上工作而不是在可流动的 SimpleDocTemplate 上工作，我可以轻松设置它的位置。

使用SimpleDocTemplate，如何任意定位该部分？

Answer 1

我找到了一种解决方案，这可能不是最优雅的解决方案。在摆弄框架和其他可流动对象之后，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，我创建了一个一行两列的表，并将图像插入一列，将另一个表插入第二列。

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)