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QtPDF not availabel on mac?

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  • S SimonSchroeder

    After a quick search I've found that indeed it might still be in Tech Preview. Most notably I have found that for now it seems to be part of QtWebEngine. As far as I remember QtWebEngine needs to be installed separately when using the online installer.

    I have also found build instruction for QtPDF: https://wiki.qt.io/QtPDF_Build_Instructions
    Maybe this helps if it is not yet included in any installers.

    artwawA Offline
    artwawA Offline
    artwaw
    wrote on last edited by
    #12

    @SimonSchroeder QtPDF is included in stable 5.15.0 as a part of the QtWebEngine. I have that installed and as I wrote the .framework files are present on the disk. That's the whole reason for this post, files are there, Qt doesn't seem to "see" them.

    For more information please re-read.

    Kind Regards,
    Artur

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    • artwawA artwaw

      @SimonSchroeder QtPDF is included in stable 5.15.0 as a part of the QtWebEngine. I have that installed and as I wrote the .framework files are present on the disk. That's the whole reason for this post, files are there, Qt doesn't seem to "see" them.

      Z Offline
      Z Offline
      zhenghan
      wrote on last edited by
      #13

      @artwaw Hi, sir. I have met the same problem. Did you solve it yet? I use qtcreator on windows, and I have a Qt5Pdf.dll in my bin directory. But when I use QT += pdf, I got the same error, Unknown modules in QT: pdf.

      artwawA 1 Reply Last reply
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      • JoeCFDJ Offline
        JoeCFDJ Offline
        JoeCFD
        wrote on last edited by JoeCFD
        #14

        Use free poppler for pdf( under GPLv2 or GPLv3) . It is not hard to add it.
        Qt uses PDFium. https://wiki.qt.io/Handling_PDF
        Poppler seems even better than PDFium
        https://hub.alfresco.com/t5/alfresco-content-services-blog/pdf-rendering-engine-performance-and-fidelity-comparison/ba-p/287618

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        • JoeCFDJ Offline
          JoeCFDJ Offline
          JoeCFD
          wrote on last edited by JoeCFD
          #15

          Qt PDF is available under both GPLv3 and LGPLv3.
          https://marketplace.qt.io/products/qtpdf

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          • JoeCFDJ Offline
            JoeCFDJ Offline
            JoeCFD
            wrote on last edited by
            #16

            can you run the example?
            qt-examples/Qt-5.15.2/pdf/pdfviewer

            no problem to run it on Ubuntu.

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            • JoeCFDJ JoeCFD

              can you run the example?
              qt-examples/Qt-5.15.2/pdf/pdfviewer

              no problem to run it on Ubuntu.

              Z Offline
              Z Offline
              zhenghan
              wrote on last edited by
              #17

              @JoeCFD Thanks for your reply. I can't run the example with error "Unknown modules in Qt: pdf". It is wired why Qt can't find the module, because the Qt5Pdf.dll is in msvc2019_64/bin directory, and Qt5Pdf.lib in msvc2019_64/lib directory. But in msvc2019_64/include directory there is no subfolder named Qt5Pdf.

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              • JoeCFDJ Offline
                JoeCFDJ Offline
                JoeCFD
                wrote on last edited by
                #18

                You have to install this component
                https://wiki.qt.io/QtPDF_Build_Instructions

                Z 2 Replies Last reply
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                • JoeCFDJ JoeCFD

                  You have to install this component
                  https://wiki.qt.io/QtPDF_Build_Instructions

                  Z Offline
                  Z Offline
                  zhenghan
                  wrote on last edited by
                  #19

                  @JoeCFD said in QtPDF not availabel on mac?:

                  https://wiki.qt.io/QtPDF_Build_Instructions

                  Thanks for your reply. I have complied this component. And it works.

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                  • JoeCFDJ JoeCFD

                    You have to install this component
                    https://wiki.qt.io/QtPDF_Build_Instructions

                    Z Offline
                    Z Offline
                    zhenghan
                    wrote on last edited by
                    #20

                    @JoeCFD I want develop a pdf application in which I want to edit the pdf file, adding a digit signature in the pdf. What pdf library do you think is proper for the purpose?
                    I have find PoDoFo, and poppler, QtPdf(seems can't modify pdf). Again thanks for your time.

                    1 Reply Last reply
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                    • JoeCFDJ Offline
                      JoeCFDJ Offline
                      JoeCFD
                      wrote on last edited by JoeCFD
                      #21

                      d30a723b-169f-4c0e-8390-6ec2f077b01e-image.png

                      MuPDF is the best. PDFium(Qt) is second. XPDF(Poppler) is third. You choose the better one for your app. You need to pay attention to license issue.

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                      • Z zhenghan

                        @artwaw Hi, sir. I have met the same problem. Did you solve it yet? I use qtcreator on windows, and I have a Qt5Pdf.dll in my bin directory. But when I use QT += pdf, I got the same error, Unknown modules in QT: pdf.

                        artwawA Offline
                        artwawA Offline
                        artwaw
                        wrote on last edited by
                        #22

                        @zhenghan Hi, sorry for late reply - I just built it from source, signed and installed. Like you did, from what I see.

                        For more information please re-read.

                        Kind Regards,
                        Artur

                        Z 1 Reply Last reply
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                        • D Offline
                          D Offline
                          DerReisende
                          wrote on last edited by
                          #23

                          I am successfully using PoDoFo from vcpkg for manipulating PDF (merging files, adding text content ,etc) files in my Qt 6.1 cmake project. Adding digital signatures with it should be possible ( I have read some code for it in the library but I don't have a use-case currently).
                          Be sure to install the [fontconfig] version of podofo otherwise you will get unexpected crashes on windows when drawing text with fonts.
                          Coding with it is quite straightforward although the documentation could be better - but I am no fluent c++ coder.

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                          • JoeCFDJ JoeCFD

                            d30a723b-169f-4c0e-8390-6ec2f077b01e-image.png

                            MuPDF is the best. PDFium(Qt) is second. XPDF(Poppler) is third. You choose the better one for your app. You need to pay attention to license issue.

                            Z Offline
                            Z Offline
                            zhenghan
                            wrote on last edited by
                            #24

                            @JoeCFD Thanks for your advice. Very appreciate.

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                            • artwawA artwaw

                              @zhenghan Hi, sorry for late reply - I just built it from source, signed and installed. Like you did, from what I see.

                              Z Offline
                              Z Offline
                              zhenghan
                              wrote on last edited by
                              #25

                              @artwaw Thank you.

                              1 Reply Last reply
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                              • D DerReisende

                                I am successfully using PoDoFo from vcpkg for manipulating PDF (merging files, adding text content ,etc) files in my Qt 6.1 cmake project. Adding digital signatures with it should be possible ( I have read some code for it in the library but I don't have a use-case currently).
                                Be sure to install the [fontconfig] version of podofo otherwise you will get unexpected crashes on windows when drawing text with fonts.
                                Coding with it is quite straightforward although the documentation could be better - but I am no fluent c++ coder.

                                Z Offline
                                Z Offline
                                zhenghan
                                wrote on last edited by
                                #26

                                @DerReisende Thank you. I will try it.

                                1 Reply Last reply
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