QPainter howto draw Table

[MrLibya]

Hello

How i can draw a table in QPainter ?
for e.g :

[MrLibya]

http://www.qtrpt.tk/?page=doc_qtrpt.php#usinginproject
that's is what i was looking for :)
thx all for help

[m.sue]

@MrLibya

You don't. You create a table which displays data of some model and let the table draw itself.

E.g. you can use the QTableWidget class.

-Michael.

[jsulm]

@MrLibya Why do you want to draw it manually? There are http://doc.qt.io/qt-5/qtablewidget.html and http://doc.qt.io/qt-5/qtableview.html

[MrLibya]

@m.sue @jsulm cuz i don't show the table i only want print the table , i've make a QTableWidget ( without showing it ) and insert the data then i used render function , but the output is small part of the Table , and i didn't found any example for using the render function

[m.sue]

@MrLibya

I would guess that you need to scale the rendering to the printer geometry i.e get the printer's size in pixel and give this to the render function.

-Michael.

[jsulm]

@MrLibya You should fix your printing as @m-sue suggested instead of drawing manually.

[mrjj]

Hi
You can do it like this ( among many ways)
Credits to @Ni.Sumi Sumi for base function

void MainWindow::on_pushButton_released() {
  PrintWidget(ui->tableWidget);
}

void MainWindow::PrintWidget(QWidget* widget) {

  QPixmap pix(widget->size());
  QPainter painter(&pix);
  widget->render(&painter);
  painter.end();
  QPrinter printer(QPrinter::HighResolution);
  printer.setOrientation(QPrinter::Landscape);
  printer.setOutputFormat(QPrinter::PdfFormat);
  printer.setPaperSize(QPrinter::A4);
  printer.setOutputFileName("test.pdf"); // will be in build folder

  painter.begin(&printer);
  double xscale = printer.pageRect().width() / double(pix.width());
  double yscale = printer.pageRect().height() / double(pix.height());
  double scale = qMin(xscale, yscale);
  painter.translate(printer.paperRect().x() + printer.pageRect().width() / 2,
                    printer.paperRect().y() + printer.pageRect().height() / 2);
  painter.scale(scale, scale);
  painter.translate(-widget->width() / 2, -widget->height() / 2);
  painter.drawPixmap(0, 0, pix);
  painter.end();
}

Just disable the pdf part to have it on paper.

Screen:

output:

Test project
https://www.dropbox.com/s/kvgo5fissc9i9t0/printtable.zip?dl=0

[MrLibya]

@mrjj said in QPainter howto draw Table:

painter.begin(&printer);
double xscale = printer.pageRect().width() / double(pix.width());
double yscale = printer.pageRect().height() / double(pix.height());
double scale = qMin(xscale, yscale);
painter.translate(printer.paperRect().x() + printer.pageRect().width() / 2,
printer.paperRect().y() + printer.pageRect().height() / 2);
painter.scale(scale, scale);
painter.translate(-widget->width() / 2, -widget->height() / 2);
painter.drawPixmap(0, 0, pix);
painter.end();

i got :

code :

QTableWidget * test = new QTableWidget(this);
    int row = 0;
    for(MAPEmployeesTable::const_iterator it = mEmployeesTable->begin(); it != mEmployeesTable->end(); ++it){
        test->setRowCount(row+1);
        test->setItem(row,0,new QTableWidgetItem(it->second.getName()));
        test->setItem(row,1,new QTableWidgetItem(it->second.getBsalary()));
        test->setItem(row,2,new QTableWidgetItem(it->second.getAccommBonus()));
        test->setItem(row,3,new QTableWidgetItem(it->second.getDiscriminBonus()));
        test->setItem(row,4,new QTableWidgetItem(it->second.getDelegatBonus()));
        test->setItem(row,5,new QTableWidgetItem(it->second.getTeachingBonus()));
        test->setItem(row,6,new QTableWidgetItem(it->second.getReward()));
        test->setItem(row,7,new QTableWidgetItem(it->second.getNOWBonus()));
        row++;
    }

    QPrinter printer(QPrinter::HighResolution);
    printer.setOutputFileName("print.pdf");
    printer.setOrientation(QPrinter::Landscape);
    printer.setOutputFormat(QPrinter::PdfFormat);
    printer.setPageSize(QPrinter::A4);

    QPixmap pix(test->size());
    QPainter painter(&pix);
    test->render(&painter);
    painter.end();

    painter.begin(&printer);
    double xscale = printer.pageRect().width() / double(pix.width());
    double yscale = printer.pageRect().height() / double(pix.height());
    double scale = qMin(xscale, yscale);
    painter.translate(printer.paperRect().x() + printer.pageRect().width() / 2,
                          printer.paperRect().y() + printer.pageRect().height() / 2);
    painter.scale(scale, scale);
    painter.translate(-test->width() / 2, -test->height() / 2);
    painter.drawPixmap(0, 0, pix);
    painter.end();

    delete test;

[MrLibya]

This post is deleted!

[MrLibya]

the problem above is cuz i'm working on new QTableWidget without giveing it any size , so i try this on another table wodget and the result :

[mrjj]

well it will have a default size then.
And it seems it has scrollbars too.
try to resize it to have the needed width.

[MrLibya]

@mrjj there will be another problem , so as u can see the render fucntion it's not take the table items..etc it just take a screenshot for the table
i don't want the header & scroolbar , also when i've more then 10 rows ( then i will have a scroolbar ) the render is only take screenshot for what is visible ( maybe only first 5 rows ) , i will have table with over 1k rows so it should be in every page maybe there 20 or 30 based on paper height , it's there any another class can do same this ?

also if i make it by HTML code is't ok ? ( while i think this is very stupid method)

[MrLibya]

This post is deleted!

[MrLibya]

This post is deleted!

[MrLibya]

http://www.qtrpt.tk/?page=doc_qtrpt.php#usinginproject
that's is what i was looking for :)
thx all for help

[mrjj]

Oh you have 1000 rows. Yes then report generator is surely the way to go as it would have been a huge image to show all them at once :)