3.2.3Python之ReportLab的Flowable

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ReportLabe库还是比较强大的，前面我们都是用它的基本类，它还有一些高级类，方便用户绘制段落文字、表格以及图片。它们是Flowable的子类，分别如下:

• reportlab.platypus.Paragraph
• reportlab.platypus.Table
• reportlab.platypus.Image

下面示例展示如何使用这些类。

   #引入所需要的基本包
    from reportlab.pdfgen import canvas
    from reportlab.lib.units import mm
    from reportlab.lib.units import inch
    from reportlab.platypus import Table
    from reportlab.platypus import Image
    from reportlab.platypus import Paragraph
    from reportlab.lib.styles import getSampleStyleSheet
    from reportlab.lib import colors
    
    def drawBitmap(c):
        I = Image("image.jpg")
        styleSheet = getSampleStyleSheet()
        I.drawHeight = 1.25*inch*I.drawHeight / I.drawWidth
        I.drawWidth = 1.25*inch
        P0 = Paragraph('''
            <b>A pa<font color=red>r</font>a<i>graph</i></b>
            <super><font color=yellow>1</font></super>''',
            styleSheet["BodyText"])
        P = Paragraph('''
            <para align=center spaceb=3>The <b>ReportLab Left
            <font color=red>Logo</font></b>
            Image</para>''',
            styleSheet["BodyText"])
        data= [['A', 'B', 'C', P0, 'D'],
            ['00', '01', '02', [I,P], '04'],
            ['10', '11', '12', [P,I], '14'],
            ['20', '21', '22', '23', '24'],
            ['30', '31', '32', '33', '34']]
        t=Table(data,style=[('GRID',(1,1),(-2,-2),1,colors.green),
            ('BOX',(0,0),(1,-1),2,colors.red),
            ('LINEABOVE',(1,2),(-2,2),1,colors.blue),
            ('LINEBEFORE',(2,1),(2,-2),1,colors.pink),
            ('BACKGROUND', (0, 0), (0, 1), colors.pink),
            ('BACKGROUND', (1, 1), (1, 2), colors.lavender),
            ('BACKGROUND', (2, 2), (2, 3), colors.orange),
            ('BOX',(0,0),(-1,-1),2,colors.black),
            ('GRID',(0,0),(-1,-1),0.5,colors.black),
            ('VALIGN',(3,0),(3,0),'BOTTOM'),
            ('BACKGROUND',(3,0),(3,0),colors.limegreen),
            ('BACKGROUND',(3,1),(3,1),colors.khaki),
            ('ALIGN',(3,1),(3,1),'CENTER'),
            ('BACKGROUND',(3,2),(3,2),colors.beige),
            ('ALIGN',(3,2),(3,2),'LEFT'),
            ])
        t._argW[3]=1.5*inch
        t.wrapOn(c,176.7*mm, 200*mm)
        t.drawOn(c, 15*mm, 75.6*mm)
    
        
    #定义要生成的pdf的名称
    c=canvas.Canvas("image.pdf")
    #调用函数生成条形码和二维码，并将canvas对象作为参数传递
    drawBitmap(c)
    #showPage函数：保存当前页的canvas
    c.showPage()
    #save函数：保存文件并关闭canvas
    c.save()

运行结果如下

图片依然是我的老婆新垣结衣