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

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

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  • JonBJ JonB

    @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.

    Thank YouT Offline
    Thank YouT Offline
    Thank You
    wrote on last edited by
    #6

    @JonB
    can you share the code with me
    which you used for printing whole records

    I once tried using the QPixMap which only prints the data that are currently shown in the screen (not all columns in table view but only columns that are visible)

    Ya I said that I want to get the tableview printed which shows all data and all columns

    Let's make QT free or It will go forever

    TRUE AND FALSE <3

    JonBJ 1 Reply Last reply
    0
    • Thank YouT Thank You

      @JonB
      can you share the code with me
      which you used for printing whole records

      I once tried using the QPixMap which only prints the data that are currently shown in the screen (not all columns in table view but only columns that are visible)

      Ya I said that I want to get the tableview printed which shows all data and all columns

      JonBJ Offline
      JonBJ Offline
      JonB
      wrote on last edited by JonB
      #7

      @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.

      Thank YouT 1 Reply Last reply
      2
      • JonBJ JonB

        @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.

        Thank YouT Offline
        Thank YouT Offline
        Thank You
        wrote on 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

        JonBJ 1 Reply Last reply
        0
        • Thank YouT Thank You

          @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++

          JonBJ Offline
          JonBJ Offline
          JonB
          wrote on 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++"?

          Thank YouT 1 Reply Last reply
          0
          • JonBJ JonB

            @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++"?

            Thank YouT Offline
            Thank YouT Offline
            Thank You
            wrote on 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

            JonBJ 1 Reply Last reply
            0
            • Thank YouT Thank You

              @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

              JonBJ Offline
              JonBJ Offline
              JonB
              wrote on 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
              • JonBJ JonB

                @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.

                Thank YouT Offline
                Thank YouT Offline
                Thank You
                wrote on 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

                JonBJ 1 Reply Last reply
                0
                • Thank YouT Thank You

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

                  JonBJ Offline
                  JonBJ Offline
                  JonB
                  wrote on last edited by
                  #13

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

                  Thank YouT 1 Reply Last reply
                  0
                  • JonBJ JonB

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

                    Thank YouT Offline
                    Thank YouT Offline
                    Thank You
                    wrote on 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

                    mrjjM 1 Reply Last reply
                    0
                    • Thank YouT Thank You

                      @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

                      mrjjM Offline
                      mrjjM Offline
                      mrjj
                      Lifetime Qt Champion
                      wrote on 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.

                      Thank YouT 1 Reply Last reply
                      1
                      • mrjjM mrjj

                        @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.

                        Thank YouT Offline
                        Thank YouT Offline
                        Thank You
                        wrote on 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

                        mrjjM 1 Reply Last reply
                        0
                        • Thank YouT Thank You

                          @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

                          mrjjM Offline
                          mrjjM Offline
                          mrjj
                          Lifetime Qt Champion
                          wrote on last edited by mrjj
                          #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

                          JonBJ 1 Reply Last reply
                          1
                          • mrjjM mrjj

                            @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

                            JonBJ Offline
                            JonBJ Offline
                            JonB
                            wrote on 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... :)

                            mrjjM 1 Reply Last reply
                            1
                            • JonBJ JonB

                              @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... :)

                              mrjjM Offline
                              mrjjM Offline
                              mrjj
                              Lifetime Qt Champion
                              wrote on 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.HilkJ 1 Reply Last reply
                              1
                              • mrjjM mrjj

                                @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.HilkJ Offline
                                J.HilkJ Offline
                                J.Hilk
                                Moderators
                                wrote on 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.

                                mrjjM 1 Reply Last reply
                                1
                                • J.HilkJ J.Hilk

                                  @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

                                  mrjjM Offline
                                  mrjjM Offline
                                  mrjj
                                  Lifetime Qt Champion
                                  wrote on 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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