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How can I export QTableView to Excel file (*.xlsx)

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  • J JonB
    30 Nov 2020, 13:13

    @Thank-You
    It was quite a while ago, while I was writing in Python/PyQt5. (Not that that matters, you can convert to C++ if that's what you're using.) It looks like I wrote it to take a QAbstractItemModel, the QTableView.model(), which if you think about it makes sense. I am wanting to export the model, not how the particular QTableView happens to look, which is also what you need if you want to export to e.g. Word/Excel/CSV. Which I also allow. But the QTextDocument exporter looks like the following. I have omitted some optional extras, to keep the code down. It may not be everything, but should give you an idea of how to do it which you can enhance/adapt.

    Exporter:

    class TableModelExporter(QObject):
        def __init__(self, model: QAbstractItemModel, parent: QObject=None):
            super().__init__(parent)
    
            self.model = model
    
        def createTextDocument(self) -> JTextDocument:
            doc = JTextDocument(self)
            font = QFont("Verdana", 10)
            doc.setDefaultFont(font)
    
            doc.setDocumentMargin(10)
            cursor = QTextCursor(doc)
    
            cursor.movePosition(QTextCursor.Start)
            table = doc.insertTableForModel(cursor, self.model)
    
            cursor.movePosition(QTextCursor.End)
    
            return doc
    

    QTextDocument creator (omitting support methods like boldCharFormat(), setTextCursorHAlign() etc. which should be obvious):

    class JTextDocument(QTextDocument):
    
        def insertTableForModel(self, cursor: QTextCursor, model: QAbstractItemModel) -> QTextTable:
            rowCnt = model.rowCount()
            colCnt = model.columnCount()
            tableFormat = QTextTableFormat()
            tableFormat.setCellSpacing(0)
            tableFormat.setCellPadding(1)
            table = cursor.insertTable(rowCnt + 1, colCnt, tableFormat)
    
            headerFormat = self.boldCharFormat()
            for col in range(colCnt):
                text = model.headerData(col, Qt.Horizontal)
                headerCell = table.cellAt(0, col)
                cursor = headerCell.firstCursorPosition()
                self.setTextCursorHAlign(cursor, Qt.AlignHCenter)
                cursor.insertText(text, headerFormat)
    
            for row in range(rowCnt):
                for col in range(colCnt):
                    val = model.data(model.index(row, col), Qt.DisplayRole)
                    val, alignment, colour = self.textAlignAndColourForValue(val)
                    alignment = model.data(model.index(row, col), Qt.TextAlignmentRole)
                    colour = model.data(model.index(row, col), Qt.ForegroundRole)
                    font = model.data(model.index(row, col), Qt.FontRole)
                    bold = font.bold() if font else False
                    cell = table.cellAt(row + 1, col)
                    cursor = cell.firstCursorPosition()
                    if alignment is not None:
                        self.setTextCursorHAlign(cursor, alignment)
                    if colour is not None:
                        self.setTextCursorColour(cursor, colour)
                    format = self.boldCharFormat() if bold else QTextCharFormat()
                    cursor.insertText(val, format)
    
            return table
    

    You can then do what you like with the resulting QTextDocument/HTML. For PDF printing I went via a QWebEnginePage previewer with a print/saveAs Pdf(), there may be other ways now to convert to PDF.

    T Offline
    T Offline
    Thank You
    wrote on 30 Nov 2020, 13:25 last edited by
    #8

    @JonB
    Sorry I can't understand python at all

    Can you send me link where there is information for printing all the data in C++

    Let's make QT free or It will go forever

    TRUE AND FALSE <3

    J 1 Reply Last reply 30 Nov 2020, 13:34
    0
    • T Thank You
      30 Nov 2020, 13:25

      @JonB
      Sorry I can't understand python at all

      Can you send me link where there is information for printing all the data in C++

      J Offline
      J Offline
      JonB
      wrote on 30 Nov 2020, 13:34 last edited by JonB
      #9

      @Thank-You said in How can I export QTableView to Excel file (*.xlsx):

      Sorry I can't understand python at all

      Well that's a shame, because when I was doing Python Qt I had to adapt all examples from C++, which I managed. The important part here is really just https://doc.qt.io/qt-5/qtexttableformat.html. The example code is self-explanatory, and dead easy to convert, IMHO. Up to you what effort you want to make.

      Can you send me link where there is information for printing all the data in C++

      What information for "printing all the data in C++"?

      T 1 Reply Last reply 30 Nov 2020, 14:15
      0
      • J JonB
        30 Nov 2020, 13:34

        @Thank-You said in How can I export QTableView to Excel file (*.xlsx):

        Sorry I can't understand python at all

        Well that's a shame, because when I was doing Python Qt I had to adapt all examples from C++, which I managed. The important part here is really just https://doc.qt.io/qt-5/qtexttableformat.html. The example code is self-explanatory, and dead easy to convert, IMHO. Up to you what effort you want to make.

        Can you send me link where there is information for printing all the data in C++

        What information for "printing all the data in C++"?

        T Offline
        T Offline
        Thank You
        wrote on 30 Nov 2020, 14:15 last edited by
        #10

        @JonB Ya its bad
        But I don't want to learn python in any way
        I don't like it at all and mainly while using QT at least for now

        I mean if you know about c++ code for printing QTableView then send me link
        I searched today for many hours
        It would be very helpful

        Let's make QT free or It will go forever

        TRUE AND FALSE <3

        J 1 Reply Last reply 30 Nov 2020, 16:04
        0
        • T Thank You
          30 Nov 2020, 14:15

          @JonB Ya its bad
          But I don't want to learn python in any way
          I don't like it at all and mainly while using QT at least for now

          I mean if you know about c++ code for printing QTableView then send me link
          I searched today for many hours
          It would be very helpful

          J Offline
          J Offline
          JonB
          wrote on 30 Nov 2020, 16:04 last edited by
          #11

          @Thank-You
          Since I wrote the code I gave you myself, I'm hardly going to know about some other C++ equivalent. You don't have to know any Python to figure it. Best of luck.

          1 Reply Last reply
          0
          • J JonB
            30 Nov 2020, 12:21

            @Thank-You
            Still depends on how much control over the printed output you wish to exert. For example, exporting to a .csv is *much * easier, but you'll end up with just column data imported into Excel, not, say, column widths, or font bolding or whatever. Only you know how much you need.

            BTW, do you know that you want to export to Excel to do printing? When I wanted to print a QTableView, although I offered an option to export to Excel I actually wrote code to just print off the QTableView inside Qt program. By "converting" it to a QTextDocument, which gives you HTML/PDF printing without external programs. I was quite happy with that result, without resorting to Excel or actual PDF commands. But again depends on just what you wish to achieve.

            T Offline
            T Offline
            Thank You
            wrote on 1 Dec 2020, 15:43 last edited by
            #12

            @JonB Can you post the way of exporting to .csv files

            Let's make QT free or It will go forever

            TRUE AND FALSE <3

            J 1 Reply Last reply 1 Dec 2020, 16:23
            0
            • T Thank You
              1 Dec 2020, 15:43

              @JonB Can you post the way of exporting to .csv files

              J Offline
              J Offline
              JonB
              wrote on 1 Dec 2020, 16:23 last edited by
              #13

              @Thank-You
              No, it's in Python too.

              T 1 Reply Last reply 1 Dec 2020, 16:28
              0
              • J JonB
                1 Dec 2020, 16:23

                @Thank-You
                No, it's in Python too.

                T Offline
                T Offline
                Thank You
                wrote on 1 Dec 2020, 16:28 last edited by
                #14

                @JonB Do you know any method to export to any file (.xlsx or .csv or .pdf) or simply print
                https://stackoverflow.com/questions/3147030/qtableview-printing
                This link worked but
                I have tableview with 30 columns
                So Data break there

                Its so important
                I am continiously searching this for whole day
                Please help me

                Let's make QT free or It will go forever

                TRUE AND FALSE <3

                M 1 Reply Last reply 1 Dec 2020, 18:36
                0
                • T Thank You
                  1 Dec 2020, 16:28

                  @JonB Do you know any method to export to any file (.xlsx or .csv or .pdf) or simply print
                  https://stackoverflow.com/questions/3147030/qtableview-printing
                  This link worked but
                  I have tableview with 30 columns
                  So Data break there

                  Its so important
                  I am continiously searching this for whole day
                  Please help me

                  M Offline
                  M Offline
                  mrjj
                  Lifetime Qt Champion
                  wrote on 1 Dec 2020, 18:36 last edited by
                  #15

                  @Thank-You
                  Hi
                  It's quite different to export to CSV versus actually printing to a pdf as with
                  CSV file the number of columns doesn't matter but with actual printing, you have the page limits to consider.

                  So do you need actual printing (PDF) or is data export just fine ? ( CSV)
                  With CSV you will get a file which you have to print using excel or other app than can import CSV file.

                  T 1 Reply Last reply 2 Dec 2020, 03:47
                  1
                  • M mrjj
                    1 Dec 2020, 18:36

                    @Thank-You
                    Hi
                    It's quite different to export to CSV versus actually printing to a pdf as with
                    CSV file the number of columns doesn't matter but with actual printing, you have the page limits to consider.

                    So do you need actual printing (PDF) or is data export just fine ? ( CSV)
                    With CSV you will get a file which you have to print using excel or other app than can import CSV file.

                    T Offline
                    T Offline
                    Thank You
                    wrote on 2 Dec 2020, 03:47 last edited by
                    #16

                    @mrjj Ok its fine but I want to export
                    https://stackoverflow.com/questions/3147030/qtableview-printing
                    This actually worked but all the data do not fit here

                    If You know how to do it then suggest me
                    Else suggest me to export in .csv file

                    Let's make QT free or It will go forever

                    TRUE AND FALSE <3

                    M 1 Reply Last reply 2 Dec 2020, 05:59
                    0
                    • T Thank You
                      2 Dec 2020, 03:47

                      @mrjj Ok its fine but I want to export
                      https://stackoverflow.com/questions/3147030/qtableview-printing
                      This actually worked but all the data do not fit here

                      If You know how to do it then suggest me
                      Else suggest me to export in .csv file

                      M Offline
                      M Offline
                      mrjj
                      Lifetime Qt Champion
                      wrote on 2 Dec 2020, 05:59 last edited by mrjj 12 Feb 2020, 07:45
                      #17

                      @Thank-You
                      Hi
                      For actual printing, your only option is to reduce the font size to try to make it fit to paper.
                      Maybe also set it to landscape mode. But it sounds like it really cant fit if you have 30.
                      Page wrapping on width is hard with a table. (IMHO)

                      For export to CSV. you can use
                      https://github.com/VSRonin/QtModelUtilities
                      it has a nice exporter
                      https://vsronin.github.io/QtModelUtilities/class_csv_model_serialiser.html

                      J 1 Reply Last reply 2 Dec 2020, 07:41
                      1
                      • M mrjj
                        2 Dec 2020, 05:59

                        @Thank-You
                        Hi
                        For actual printing, your only option is to reduce the font size to try to make it fit to paper.
                        Maybe also set it to landscape mode. But it sounds like it really cant fit if you have 30.
                        Page wrapping on width is hard with a table. (IMHO)

                        For export to CSV. you can use
                        https://github.com/VSRonin/QtModelUtilities
                        it has a nice exporter
                        https://vsronin.github.io/QtModelUtilities/class_csv_model_serialiser.html

                        J Offline
                        J Offline
                        JonB
                        wrote on 2 Dec 2020, 07:41 last edited by
                        #18

                        @mrjj said in How can I export QTableView to Excel file (*.xlsx):

                        For export to CVS. you can use

                        CVS is a US pharmacy chain, don't think they accept any exported files... ;-)

                        Same thing as I seem to mistype Excel XLS as XSL... :)

                        M 1 Reply Last reply 2 Dec 2020, 07:45
                        1
                        • J JonB
                          2 Dec 2020, 07:41

                          @mrjj said in How can I export QTableView to Excel file (*.xlsx):

                          For export to CVS. you can use

                          CVS is a US pharmacy chain, don't think they accept any exported files... ;-)

                          Same thing as I seem to mistype Excel XLS as XSL... :)

                          M Offline
                          M Offline
                          mrjj
                          Lifetime Qt Champion
                          wrote on 2 Dec 2020, 07:45 last edited by
                          #19

                          @JonB
                          hehe thx
                          Yes I always swap those letters for some odd reason.
                          And to make it more ironic, Excel uses tabs for its COMMA separated files pr default :)

                          J 1 Reply Last reply 2 Dec 2020, 09:48
                          1
                          • M mrjj
                            2 Dec 2020, 07:45

                            @JonB
                            hehe thx
                            Yes I always swap those letters for some odd reason.
                            And to make it more ironic, Excel uses tabs for its COMMA separated files pr default :)

                            J Offline
                            J Offline
                            J.Hilk
                            Moderators
                            wrote on 2 Dec 2020, 09:48 last edited by
                            #20

                            @mrjj I believe this is due to internalizations, as commas are used (in some regions) as decimal point where as you have a hard time typing a tab in excel in the first place :D


                            Be aware of the Qt Code of Conduct, when posting : https://forum.qt.io/topic/113070/qt-code-of-conduct


                            Q: What's that?
                            A: It's blue light.
                            Q: What does it do?
                            A: It turns blue.

                            M 1 Reply Last reply 2 Dec 2020, 09:54
                            1
                            • J J.Hilk
                              2 Dec 2020, 09:48

                              @mrjj I believe this is due to internalizations, as commas are used (in some regions) as decimal point where as you have a hard time typing a tab in excel in the first place :D

                              M Offline
                              M Offline
                              mrjj
                              Lifetime Qt Champion
                              wrote on 2 Dec 2020, 09:54 last edited by
                              #21

                              @J-Hilk
                              hehe yes im pretty sure it has a very valid reason and function and was more aiming
                              at the ironic part, that format didn't really follow the name :)

                              1 Reply Last reply
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                              2 Dec 2020, 05:59

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