之前打印PDF都是通过html形式来实现的,但是这次要做的东西,需要打印界面控件,所以需要使用QPdfWriter.
通过QPdfWriter来获取QPainter对象,就能实现在PDF上来画画啦.
代码生成的PDF如下所示:
代码效果如下所示:
代码如下所示：
代码语言：javascript复制//通过dialog来保存PDF路径
QString mainWindow::pdfSaveAs(QString fileName)
{
QString file="";
file = QFileDialog::getSaveFileName (
this, //父组件
"另存为", //标题
QString("%1/%2").arg(QStandardPaths::writableLocation(QStandardPaths::DesktopLocation)).arg("" fileName ".pdf"),
//设置路径, .表示当前路径,./表示更目录
"PDF文件", //过滤器,保存的类型
Q_NULLPTR,
QFileDialog::ShowDirsOnly);
return file;
}
//y:表单的Y坐标
//horzBorder:水平外边距,写0表示没有边距
//row,column:行数和列数
//unitHeight:单元高度
//font:字体大小
//list:要写入的单元数据
void mainWindow::pdfDrawForm(QPainter* paint,int y,int horzBorder,int row,int column,int unitHeight,QFont &font,QStringList& list)
{
paint->setFont(font);
paint->setPen(QPen(QBrush(QColor(0,0,0)),2));
int Width = paint->viewport().width()-horzBorder*2;
int unitWidth = Width/column;
for(int i=0;i<row;i )
{
int x= horzBorder;
for(int j=0;j<column;j )
{
paint->drawText(QRect(x,y, unitWidth, unitHeight), Qt::AlignCenter,list[i*column j]);
paint->drawRect(QRect(x,y, unitWidth, unitHeight));
x =unitWidth;
}
y = unitHeight;
}
}
void mainWindow::pdfCreate(checkInfo &info)
{
// //设置pdf保存的路径
// QString file_path = pdfSaveAs(QString("表单%1").arg(QDateTime::currentDateTime().toString("MMdd-hh-mm")));
// if(file_path.isEmpty())
// return;
QString file_path =QApplication::applicationDirPath() "/test.pdf";
QFile pdfFile(file_path);
pdfFile.open(QIODevice::WriteOnly);
QPdfWriter* pWriter = new QPdfWriter(&pdfFile);
//Init Page
pWriter->setPageSize(QPagedPaintDevice::A4);
pWriter->setResolution(300); //设置dpi 每个平方英寸像素为300
pWriter->setPageMargins(QMarginsF(30, 30, 30, 30));
QPainter* pPainter = new QPainter(pWriter);
//Init Font
QFont font[5]={QFont("宋体",26,60),QFont("宋体",26,61),QFont("宋体",26,QFont::Normal),QFont("宋体",26,QFont::Normal),QFont("宋体",26,QFont::Normal)};
font[0].setPixelSize(86);
font[1].setPixelSize(61);
font[2].setPixelSize(61);
font[3].setPixelSize(42);
font[4].setPixelSize(54);
//Painter PDF
qDebug()<<pPainter->viewport();
int nPDFWidth = pPainter->viewport().width();
int nPDFHeight = pPainter->viewport().height();
//在10%的头部居中显示
int y=10;
pPainter->setFont(font[0]);
pPainter->drawText(QRect(0,y, nPDFWidth, 100), Qt::AlignCenter,
m_arg.printTitle);
y =140;
pPainter->setPen(QPen(QBrush(QColor(0,0,0)),5));
pPainter->drawLine(0,y,nPDFWidth,y);
pPainter->drawLine(0,y 18,nPDFWidth,y 18);
y =60;
pPainter->setFont(font[2]);
pPainter->drawText(QRect(100,y, nPDFWidth/2, 70), Qt::AlignVCenter | Qt::AlignLeft,
QString("器件型号: %1").arg(info.dev.name));
pPainter->setFont(font[2]);
pPainter->drawText(QRect(nPDFWidth/2 100,y, nPDFWidth/2-100, 70), Qt::AlignVCenter | Qt::AlignLeft,
QString("器件编号: %1").arg(info.devNum));
y =90;
pPainter->setFont(font[2]);
pPainter->drawText(QRect(100,y, nPDFWidth/2, 70), Qt::AlignVCenter | Qt::AlignLeft,
QString("装车车号: %1").arg(info.devCar));
pPainter->setFont(font[2]);
pPainter->drawText(QRect(nPDFWidth/2 100,y, nPDFWidth/2-100, 70), Qt::AlignVCenter | Qt::AlignLeft,
QString("试验日期: %1").arg(info.checkDate));
y =110;
pPainter->setFont(font[1]);
pPainter->drawText(QRect(0,y, nPDFWidth, 80), Qt::AlignVCenter | Qt::AlignLeft,
"减 振 器 标 准 参 数");
y =120;
QStringList list;
list<<"速度"<<"压力"<<"拉力"<<"阻尼系数"<<"不对称率"<<"正允差"<<"负允差";
list<<info.dev.speed "m/s"<<info.dev.yaLi "kN"<<info.dev.laLi "kN"<<
info.dev.zhuNi "kNs/m"<<info.dev.buDuiC "%"<<info.dev.zYunCha "%"<<info.dev.fYunCha "%";
pdfDrawForm(pPainter,y,0,2,7,100,font[3],list);
y =260;
pPainter->setFont(font[1]);
pPainter->drawText(QRect(0,y, nPDFWidth, 80), Qt::AlignVCenter | Qt::AlignLeft,
"示 功 图");
y =100;
//获取界面图片
int imageBorder=150; //设置图片水平边距为150
QPixmap pixmap = QPixmap::grabWidget(m_checkChart, m_checkChart->rect());
float x = (float)(nPDFWidth-imageBorder*2)/(float)pixmap.width();
pixmap= pixmap.scaled(nPDFWidth-imageBorder*2, x*pixmap.height(),Qt::IgnoreAspectRatio); //根据大小比例,来放大缩小图片
pPainter->drawPixmap(imageBorder, y, pixmap);
y =pixmap.height() 90;
pPainter->setFont(font[1]);
pPainter->drawText(QRect(0,y, nPDFWidth, 80), Qt::AlignVCenter | Qt::AlignLeft,
"减 振 器 测 试 结 果");
y =120;
list.clear();
list<<"拉伸行程:"<<QString::asprintf("%.2fmm",info.laSheng)<<"压缩行程:"<<QString::asprintf("%.2fmm",info.yaSuo)<<"最大速度:"<<QString::asprintf("%.3fm/s",info.speed)<<"阻尼系数:"<<QString::asprintf("%.2fkNs/m",info.speed)
<<"最大压力:"<<QString::asprintf("%.2fkN",info.max)<<"压力偏差:"<<QString::asprintf("%.2f%",info.maxBaiFengb)<<"最大拉力:"<<QString::asprintf("%.2fkN",info.min)<<"拉力偏差:"<<QString::asprintf("%.2f%",info.minBaiFengb)
<<"不对称率:"<<QString::asprintf("%.2f%",info.buduic)<<"运行时间:"<<QString::asprintf("%dS",info.runDate)<<"试验结果:"<<info.result<<"曲线结论:"<<info.ChartResult;
pdfDrawForm(pPainter,y,0,3,8,100,font[3],list);
y =400;
pPainter->setFont(font[4]);
pPainter->drawText(QRect(50,y, nPDFWidth/3, 80), Qt::AlignVCenter | Qt::AlignLeft,
QString( "试验员: %1").arg(m_userLoginInfo->name));
pPainter->drawText(QRect(nPDFWidth/3 50,y, nPDFWidth/3, 80), Qt::AlignVCenter | Qt::AlignLeft,
QString( "检查员签字: "));
pPainter->drawText(QRect(nPDFWidth/3*2,y, nPDFWidth/3, 80), Qt::AlignVCenter | Qt::AlignLeft,
QString( "签字日期: "));
// pWriter->newPage(); //写下一页
//绘制完毕
delete pPainter;
delete pWriter;
pdfFile.close();
//通过其它PDF阅读器来打开PDF
QDesktopServices::openUrl(QUrl::fromLocalFile(file_path));
}
