文本导出到pdf文件（使用QPrinter和QPainter和QTextDocument）

程序中数据导出是经常有的需求，今天学习把文本导出到pdf文件。主要是用QPrinter，QPainter

1. TextEditToPdf::TextEditToPdf(QWidget *parent, Qt::WFlags flags)
2. : QDialog(parent, flags)
3. {
4. ui.setupUi(this);
5. int ret = connect(ui.m_pExportBtn,SIGNAL(clicked()),this,SLOT(exportSlot()));
6. }
7. TextEditToPdf::~TextEditToPdf()
8. {
9. }
10. void TextEditToPdf::exportSlot()
11. {
12. QTextDocument  textDocument;
13. QPrinter printer(QPrinter::ScreenResolution);
14. printer.setPaperSize(QPrinter::A4);
15. printer.setPageMargins(30,30,30,30,QPrinter::DevicePixel);
16. printer.setOutputFormat(QPrinter::PdfFormat);
17. printer.setOutputFileName(QString("11") + ".pdf");
18. QPainter painter( &printer );
19. QFont font;
20. font.setPixelSize(15);
21. painter.setFont(font);
22. QTextOption textOption( Qt::AlignCenter);
23. QPen pen;
24. pen.setColor(Qt::black);
25. pen.setWidth(1);
26. painter.setPen(pen);
27. int paperWidth = printer.width();
28. int paperHeigth = printer.height();
29. painter.drawText( QRect(QPoint( 30,30),QPoint(paperWidth - 30,paperHeigth- 20)),ui.m_pTextEdit->toPlainText (),textOption);
30. textDocument.print(&printer);
31. }

http://blog.csdn.net/hai200501019/article/details/37576715