将 PyQt 中的 QTreeWidge 转换为 ReportLab 中的表

发布于 2024-12-26 18:25:41 字数 226 浏览 3 评论 0原文

由于报表在 ReportLab 中看起来几乎过于复杂，我试图确定一种方法来简单地添加（如果可能的话，最好通过 Paragraph 类）两个单独的文本，一个位于页面的左侧，另一个位于页面的右侧。尽管我可以上网，但我找不到任何关于如何实现这一目标的解释。那么如果这是可能的，你会怎么做呢？

最后，我想要实现的是将 PyQT 中的 QTreeWidget 中的数据转换为具有相似外观和感觉的 PDF。

提前致谢！

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开始看清了 2025-01-02 18:25:41

看来实现这一点最好通过表格来完成。因此，尽管它很复杂，但学习表数据嵌套列表的结构是正确的方法。转换 QTreeWidget 数据的关键在于下面的代码行，因为您必须在处理表数据时动态附加数据和单元格样式。

假设 QTreeWidget 的组合只是具有两列文本（0 和 1）的项目，则以下内容有效。

from reportlab.lib.units import inch
from reportlab.lib.pagesizes import letter
from reportlab.platypus import SimpleDocTemplate, Table, TableStyle

pdf = SimpleDocTemplate("TreeWidgetPDF.pdf", pagesize = letter)
data = []
tStyle = []

for x in QTreeWidgetData.findItems("*", Qt.MatchWildcard, 0):
    project = str(x.text(0))
    data.append([project, x.text(1)])
    tStyle.append(('BACKGROUND', (0, cell), (1, cell), 'YELLOW'))
    tStyle.append(('FONTSIZE', (0, cell), (1, cell), 12))
    cell+=1

    for y in range(x.childCount()):
        data.append([str(x.child(y).text(0)), str(x.child(y).text(1))])
        tStyle.append(('ALIGN', (1, cell), (1, cell), 'RIGHT'))
        tStyle.append(('LEFTPADDING', (0, cell), (0, cell), 15))
        cell+=1

        for z in range(x.child(y).childCount()):
            data.append([x.child(y).child(z).text(0), x.child(y).child(z).text(1)])
            tStyle.append(('ALIGN', (1, cell), (1, cell), 'RIGHT'))
            tStyle.append(('LEFTPADDING', (0, cell), (0, cell), 30))
            cell+=1

        # And so on and so forth. You could probably iterate through this in a 
        # While loop so you don't have to manually nest your for statements.

parts = []
styledTable = Table(data, [6 * inch, 1 * inch, 0])
styledTable.setStyle(TableStyle(tStyle))
parts.append(table_with_style)
pdf.build(parts)

It would appear that accomplishing this is best done through Tables. So though it be convoluted, learning the structure of table data nested lists was the way to go. The key for converting QTreeWidget data goes along the lines of the codes below, in that you have to dynamically append both data and cell styling as you work your way through the table data.

Assuming the QTreeWidget's composition is simply items with two columns of text (0, and 1), the below works.

from reportlab.lib.units import inch
from reportlab.lib.pagesizes import letter
from reportlab.platypus import SimpleDocTemplate, Table, TableStyle

pdf = SimpleDocTemplate("TreeWidgetPDF.pdf", pagesize = letter)
data = []
tStyle = []

for x in QTreeWidgetData.findItems("*", Qt.MatchWildcard, 0):
    project = str(x.text(0))
    data.append([project, x.text(1)])
    tStyle.append(('BACKGROUND', (0, cell), (1, cell), 'YELLOW'))
    tStyle.append(('FONTSIZE', (0, cell), (1, cell), 12))
    cell+=1

    for y in range(x.childCount()):
        data.append([str(x.child(y).text(0)), str(x.child(y).text(1))])
        tStyle.append(('ALIGN', (1, cell), (1, cell), 'RIGHT'))
        tStyle.append(('LEFTPADDING', (0, cell), (0, cell), 15))
        cell+=1

        for z in range(x.child(y).childCount()):
            data.append([x.child(y).child(z).text(0), x.child(y).child(z).text(1)])
            tStyle.append(('ALIGN', (1, cell), (1, cell), 'RIGHT'))
            tStyle.append(('LEFTPADDING', (0, cell), (0, cell), 30))
            cell+=1

        # And so on and so forth. You could probably iterate through this in a 
        # While loop so you don't have to manually nest your for statements.

parts = []
styledTable = Table(data, [6 * inch, 1 * inch, 0])
styledTable.setStyle(TableStyle(tStyle))
parts.append(table_with_style)
pdf.build(parts)

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