之前列印PDF都是通過html形式來實作的,但是這次要做的東西,需要列印界面控制元件,所以需要使用QPdfWriter.
通過QPdfWriter來獲取QPainter物件,就能實作在PDF上來畫畫啦.
代碼生成的PDF如下所示:
代碼效果如下所示:
代碼如下所示：
//通過dialog來保存PDF路徑
QString mainWindow::pdfSaveAs(QString fileName)
{
QString file="";
file = QFileDialog::getSaveFileName (
this, //父組件
"另存為", //標題
QString("%1/%2").arg(QStandardPaths::writableLocation(QStandardPaths::DesktopLocation)).arg(""+fileName+".pdf"),
//設定路徑, .表示當前路徑,./表示更目錄
"PDF檔案", //過濾器,保存的型別
Q_NULLPTR,
QFileDialog::ShowDirsOnly);
return file;
}
//y:表單的Y坐標
//horzBorder:水平外邊距,寫0表示沒有邊距
//row,column:行數和列數
//unitHeight:單元高度
//font:字體大小
//list:要寫入的單元資料
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)
{
// //設定pdf保存的路徑
// QString file_path = pdfSaveAs(QString("表單%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); //設定dpi 每個平方英寸像素為300
pWriter->setPageMargins(QMarginsF(30, 30, 30, 30));
QPainter* pPainter = new QPainter(pWriter);
//Init Font
QFont font[5]={QFont("宋體",26,60),QFont("宋體",26,61),QFont("宋體",26,QFont::Normal),QFont("宋體",26,QFont::Normal),QFont("宋體",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%的頭部居中顯示
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("器件型號: %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("器件編號: %1").arg(info.devNum));
y+=90;
pPainter->setFont(font[2]);
pPainter->drawText(QRect(100,y, nPDFWidth/2, 70), Qt::AlignVCenter | Qt::AlignLeft,
QString("裝車車號: %1").arg(info.devCar));
pPainter->setFont(font[2]);
pPainter->drawText(QRect(nPDFWidth/2+100,y, nPDFWidth/2-100, 70), Qt::AlignVCenter | Qt::AlignLeft,
QString("試驗日期: %1").arg(info.checkDate));
y+=110;
pPainter->setFont(font[1]);
pPainter->drawText(QRect(0,y, nPDFWidth, 80), Qt::AlignVCenter | Qt::AlignLeft,
"減 振 器 標 準 參 數");
y+=120;
QStringList list;
list<<"速度"<<"壓力"<<"拉力"<<"阻尼系數"<<"不對稱率"<<"正允差"<<"負允差";
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 圖");
y+=100;
//獲取界面圖片
int imageBorder=150; //設定圖片水平邊距為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); //根據大小比例,來放大縮小圖片
pPainter->drawPixmap(imageBorder, y, pixmap);
y+=pixmap.height()+90;
pPainter->setFont(font[1]);
pPainter->drawText(QRect(0,y, nPDFWidth, 80), Qt::AlignVCenter | Qt::AlignLeft,
"減 振 器 測 試 結 果");
y+=120;
list.clear();
list<<"拉伸行程:"<<QString::asprintf("%.2fmm",info.laSheng)<<"壓縮行程:"<<QString::asprintf("%.2fmm",info.yaSuo)<<"最大速度:"<<QString::asprintf("%.3fm/s",info.speed)<<"阻尼系數:"<<QString::asprintf("%.2fkNs/m",info.speed)
<<"最大壓力:"<<QString::asprintf("%.2fkN",info.max)<<"壓力偏差:"<<QString::asprintf("%.2f%",info.maxBaiFengb)<<"最大拉力:"<<QString::asprintf("%.2fkN",info.min)<<"拉力偏差:"<<QString::asprintf("%.2f%",info.minBaiFengb)
<<"不對稱率:"<<QString::asprintf("%.2f%",info.buduic)<<"運行時間:"<<QString::asprintf("%dS",info.runDate)<<"試驗結果:"<<info.result<<"曲線結論:"<<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( "試驗員: %1").arg(m_userLoginInfo->name));
pPainter->drawText(QRect(nPDFWidth/3+50,y, nPDFWidth/3, 80), Qt::AlignVCenter | Qt::AlignLeft,
QString( "檢查員簽字: "));
pPainter->drawText(QRect(nPDFWidth/3*2,y, nPDFWidth/3, 80), Qt::AlignVCenter | Qt::AlignLeft,
QString( "簽字日期: "));
// pWriter->newPage(); //寫下一頁
//繪制完畢
delete pPainter;
delete pWriter;
pdfFile.close();
//通過其它PDF閱讀器來打開PDF
QDesktopServices::openUrl(QUrl::fromLocalFile(file_path));
}
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標籤：C++
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