QT笔记-生成PDF文件（附带完整源码）绘制表格和文字

项目链接：https://download.csdn.net/download/C_panpan/88268845 https://download.csdn.net/download/C_panpan/88268845

//.h
public:
	void exportPdf();
    void paintPdf(QPagedPaintDevice *device);

//.cpp
void pdfDemo::exportPdf()
{
	//一、选择保存pdf文件路径
	QString sPath = QFileDialog::getSaveFileName(this, tr("save as"), "/", tr("Text Files (*.pdf)"));
	if (sPath.isEmpty())
	{
		return;
	}
	qDebug() << sPath;

	//二、创建pdf文件
	QFile pdfFile(sPath);
	pdfFile.open(QIODevice::WriteOnly);

	//三、创建生成pdf类，作为绘图设备
	QPdfWriter *pPdfWriter = new QPdfWriter(&pdfFile);
	pPdfWriter->setResolution(300);
	pPdfWriter->setPageOrientation(QPageLayout::Landscape);//设置页面方向：QPageLayout::Portrait 纵向、QPageLayout::Landscape 横向
	pPdfWriter->setPageSize(QPagedPaintDevice::A4);
	pPdfWriter->setPageMargins(QMarginsF(30, 30, 30, 30));

	//四、开始绘制PDF
	paintPdf(pPdfWriter);

	delete pPdfWriter;
	pdfFile.close();

	//通过其它PDF阅读器来打开刚刚绘制的PDF
	QDesktopServices::openUrl(QUrl::fromLocalFile(sPath));
}

void pdfDemo::paintPdf(QPagedPaintDevice *device)
{
	QPainter *pPainter = new QPainter(device);
	qDebug() << pPainter->viewport();
	int nPdfWidth = pPainter->viewport().width();
	int nPdfHeight = pPainter->viewport().height();

	//绘制标题
	int y = 10;
	pPainter->setFont(QFont(GBK::ToUnicode("宋体"), 18, 36));
	pPainter->drawText(QRect(0, y, nPdfWidth, 100), Qt::AlignCenter, GBK::ToUnicode("出库单"));

	//绘制表格
	pPainter->setRenderHint(QPainter::Antialiasing, true);// 反走样
	pPainter->setPen(QPen(QBrush(QColor(144, 166, 188)), 3));// 设置画笔颜色、宽度
	pPainter->drawRect(50, 200, 3156, 1800);//绘制矩形
	pPainter->drawLine(QLineF(50, 400, 3206, 400));//绘制直线
	pPainter->drawLine(QLineF(50, 600, 3206, 600));//绘制直线
	pPainter->drawLine(QLineF(50, 800, 3206, 800));//绘制直线
	pPainter->drawLine(QLineF(50, 1000, 3206, 1000));//绘制直线
	pPainter->drawLine(QLineF(50, 1200, 3206, 1200));//绘制直线
	pPainter->drawLine(QLineF(50, 1400, 3206, 1400));//绘制直线
	pPainter->drawLine(QLineF(50, 1600, 3206, 1600));//绘制直线
	pPainter->drawLine(QLineF(50, 1800, 3206, 1800));//绘制直线
	pPainter->drawLine(QLineF(300, 200, 300, 2000));//绘制直线
	pPainter->drawLine(QLineF(1200, 200, 1200, 2000));//绘制直线
	pPainter->drawLine(QLineF(1500, 200, 1500, 2000));//绘制直线
	pPainter->drawLine(QLineF(1900, 200, 1900, 2000));//绘制直线
	pPainter->drawLine(QLineF(2300, 200, 2300, 2000));//绘制直线
	pPainter->drawLine(QLineF(2700, 200, 2700, 2000));//绘制直线

	//绘制报告相关信息
	pPainter->setFont(QFont(GBK::ToUnicode("宋体"), 12, 20));
	pPainter->drawText(QRect(50, 200, 200, 200), Qt::AlignHCenter | Qt::AlignVCenter, GBK::ToUnicode("编号"));
	pPainter->drawText(QRect(300, 200, 900, 200), Qt::AlignHCenter | Qt::AlignVCenter, GBK::ToUnicode("名称及规格"));
	pPainter->drawText(QRect(1200, 200, 300, 200), Qt::AlignHCenter | Qt::AlignVCenter, GBK::ToUnicode("单位"));
	pPainter->drawText(QRect(1500, 200, 400, 200), Qt::AlignHCenter | Qt::AlignVCenter, GBK::ToUnicode("数量"));
	pPainter->drawText(QRect(1900, 200, 400, 200), Qt::AlignHCenter | Qt::AlignVCenter, GBK::ToUnicode("单价"));
	pPainter->drawText(QRect(2300, 200, 400, 200), Qt::AlignHCenter | Qt::AlignVCenter, GBK::ToUnicode("金额"));
	pPainter->drawText(QRect(2700, 200, 400, 200), Qt::AlignHCenter | Qt::AlignVCenter, GBK::ToUnicode("备注"));

	delete pPainter;
}

运行效果

绘制效果2：

void pdfDemo::paintPdf(QPagedPaintDevice *device)
{
    QPainter *pPainter = new QPainter(device);
	qDebug() << pPainter->viewport();
	int nPdfWidth = pPainter->viewport().width();
	int nPdfHeight = pPainter->viewport().height();

	//绘制标题
	int y = 10;
	pPainter->setFont(QFont(GBK::ToUnicode("宋体"), 18, 36));
	pPainter->drawText(QRect(0, y, nPdfWidth, 100), Qt::AlignCenter, GBK::ToUnicode("实验操作记录报告"));

	//绘制报告相关信息
	y += 200;
	pPainter->setFont(QFont(GBK::ToUnicode("宋体"), 12, 20));
	int nLineSpace = 100;
	int nLineHeight = 60;
	pPainter->drawText(QRect(100, y, nPdfWidth, nLineHeight), Qt::AlignLeft, GBK::ToUnicode("实验编号：19990926001"));
	y += nLineSpace;
	pPainter->drawText(QRect(100, y, nPdfWidth, nLineHeight), Qt::AlignLeft, GBK::ToUnicode("操作仪器：TMachine9568"));
	y += nLineSpace;
	pPainter->drawText(QRect(100, y, nPdfWidth, nLineHeight), Qt::AlignLeft, GBK::ToUnicode("操作用户：Dr.Miss"));
	y += nLineSpace;
	pPainter->drawText(QRect(100, y, nPdfWidth, nLineHeight), Qt::AlignLeft, GBK::ToUnicode("开始时间：1999-09-26 17:50"));
	y += nLineSpace;
	pPainter->drawText(QRect(100, y, nPdfWidth, nLineHeight), Qt::AlignLeft, GBK::ToUnicode("结束时间：1999-09-26 22:30"));

	//绘制每个操作记录的各项标题 （标题宽的比例为 序号：操作时间：操作说明：试管和试剂信息 = 2：5：5：10）
	y += 150;
	pPainter->setFont(QFont(GBK::ToUnicode("宋体"), 14, 28));
	int nUnitW = nPdfWidth / (2 + 5 + 5 + 10);

	int nNoWidth = nUnitW * 2;

	int nTimeX = nNoWidth;
	int nTimeWidth = nUnitW * 5;

	int nExplainX = nTimeX + nTimeWidth;
	int nExplainWidth = nUnitW * 5;

	int nRgInfoX = nExplainX + nExplainWidth;
	int nRgInfoW = nUnitW * 10;

	nLineHeight = 80;
	pPainter->drawText(QRect(0, y, nNoWidth, nLineHeight), Qt::AlignCenter, GBK::ToUnicode("序号"));
	pPainter->drawText(QRect(nTimeX, y, nTimeWidth, nLineHeight), Qt::AlignCenter, GBK::ToUnicode("操作时间"));
	pPainter->drawText(QRect(nExplainX, y, nExplainWidth, nLineHeight), Qt::AlignCenter, GBK::ToUnicode("操作说明"));
	pPainter->drawText(QRect(nRgInfoX, y, nRgInfoW, nLineHeight), Qt::AlignCenter, GBK::ToUnicode("试管和试剂信息"));

	//绘制一条分隔线
	y += 100;
	pPainter->setPen(QPen(QBrush(QColor(144, 166, 188)), 8));
	pPainter->drawLine(QLineF(0, y, nPdfWidth, y));

	//绘制染色操作记录,假设此刻有25条记录需要绘制
	for (int i = 0; i < 20; ++i)
	{
		//判断是否应该另起一页(320:根据计算,绘制每条记录大概需要320点）
		if (y + 320 >= nPdfHeight)
		{
			device->newPage();
			y = 10;
		}

		y += 50;
		pPainter->setFont(QFont(GBK::ToUnicode("宋体"), 12, 20));
		pPainter->setPen(QPen(QBrush(QColor(0, 0, 0)), 1));

		nLineSpace = 80;
		nLineHeight = 50;

		pPainter->drawText(QRect(0, y, nNoWidth, nLineHeight), Qt::AlignVCenter | Qt::AlignLeft, QString("%1").arg(i + 1));
		pPainter->drawText(QRect(nTimeX, y, nTimeWidth, nLineHeight), Qt::AlignVCenter | Qt::AlignLeft, GBK::ToUnicode("1999-09-26 18:27"));
		pPainter->drawText(QRect(nExplainX, y, nExplainWidth, nLineHeight), Qt::AlignVCenter | Qt::AlignLeft, GBK::ToUnicode("需加试剂DC9混合"));

		//试管和试剂信息的每行需列出2项信息 宽度比例为7:3
		nUnitW = nRgInfoW / (7 + 3);

		int nLeftX = nRgInfoX;
		int nLeftW = nUnitW * 6;

		int nRightX = nLeftX + nLeftW;
		int nRightW = nUnitW * 4;

		pPainter->drawText(QRect(nLeftX, y, nLeftW, nLineHeight), Qt::AlignVCenter | Qt::AlignLeft,
			GBK::ToUnicode("试管ID:15bb00226fa"));
		pPainter->drawText(QRect(nRightX, y, nRightW, nLineHeight), Qt::AlignVCenter | Qt::AlignLeft,
			GBK::ToUnicode("试管位置号:18"));

		y += nLineSpace;
		pPainter->drawText(QRect(nLeftX, y, nLeftW, nLineHeight), Qt::AlignVCenter | Qt::AlignLeft,
			GBK::ToUnicode("添加试剂1:AC856"));
		pPainter->drawText(QRect(nRightX, y, nRightW, nLineHeight), Qt::AlignVCenter | Qt::AlignLeft,
			GBK::ToUnicode("添加量:150"));

		y += nLineSpace;
		pPainter->drawText(QRect(nLeftX, y, nLeftW, nLineHeight), Qt::AlignVCenter | Qt::AlignLeft,
			GBK::ToUnicode("添加试剂2:SFH51"));
		pPainter->drawText(QRect(nRightX, y, nRightW, nLineHeight), Qt::AlignVCenter | Qt::AlignLeft,
			GBK::ToUnicode("添加量:80"));

		y += 70;
		pPainter->setPen(QPen(QBrush(QColor(166, 188, 222)), 3));
		pPainter->drawLine(QLineF(0, y, nPdfWidth, y));
		if (i > 0 && i < 19 && y < 1970)
			pPainter->drawLine(QLineF(220, y, 220, y + 200));
	}

	delete pPainter;
}

 运行效果