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QML show PDF file

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  • eyllanescE eyllanesc

    You can use poppler as I show in this post: https://stackoverflow.com/a/52844509/6622587

    M Offline
    M Offline
    Melle_87
    wrote on last edited by
    #7

    @eyllanesc: Ok. Thank you for the example. I compiled and installed the plugin. But why is it "import org.docviewer.poppler 1.0"?
    This gives me the error "module "org.docviewer.poppler" is not installed".
    Maybe I should mention that I am cross compiling on Ubuntu my application for raspberry pi.

    jsulmJ 1 Reply Last reply
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    • M Melle_87

      @eyllanesc: Ok. Thank you for the example. I compiled and installed the plugin. But why is it "import org.docviewer.poppler 1.0"?
      This gives me the error "module "org.docviewer.poppler" is not installed".
      Maybe I should mention that I am cross compiling on Ubuntu my application for raspberry pi.

      jsulmJ Offline
      jsulmJ Offline
      jsulm
      Lifetime Qt Champion
      wrote on last edited by
      #8

      @Melle_87 said in QML show PDF file:

      But why is it "import org.docviewer.poppler 1.0"?

      Well, because you need to import Poppler stuff if you want to use it.
      "I compiled and installed the plugin" - did you cross-compiled it for your device or host machine?

      https://forum.qt.io/topic/113070/qt-code-of-conduct

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      • jsulmJ jsulm

        @Melle_87 said in QML show PDF file:

        But why is it "import org.docviewer.poppler 1.0"?

        Well, because you need to import Poppler stuff if you want to use it.
        "I compiled and installed the plugin" - did you cross-compiled it for your device or host machine?

        M Offline
        M Offline
        Melle_87
        wrote on last edited by
        #9

        @jsulm: At the moment I am a little bit confused.
        I compiled and installed it directly on my raspberry.

        jsulmJ 1 Reply Last reply
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        • M Melle_87

          @jsulm: At the moment I am a little bit confused.
          I compiled and installed it directly on my raspberry.

          jsulmJ Offline
          jsulmJ Offline
          jsulm
          Lifetime Qt Champion
          wrote on last edited by
          #10

          @Melle_87 said in QML show PDF file:

          I compiled and installed it directly on my raspberry

          It needs to be in your sysroot. Did you resync your sysroot after installing on RPi?

          https://forum.qt.io/topic/113070/qt-code-of-conduct

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          • jsulmJ jsulm

            @Melle_87 said in QML show PDF file:

            I compiled and installed it directly on my raspberry

            It needs to be in your sysroot. Did you resync your sysroot after installing on RPi?

            M Offline
            M Offline
            Melle_87
            wrote on last edited by
            #11

            @jsulm: Ah okay. Of course, I have to resync my sysroot. I resynced the folders /usr/local/include, /usr/local/lib and /usr/lib/arm-linux-gnueabihf/qt5 from raspberry to host.

            Then I added this to my qmldir file:

            module org.docviewer.poppler
            PDFView 1.0 PDFView.qml
            plugin popplerPlugin
            typeinfo popplerPlugin.qmltypes
            

            But now I get the error message:

            plugin "popplerPlugin" not found
            

            What is the reason for this error message?

            jsulmJ 1 Reply Last reply
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            • M Melle_87

              @jsulm: Ah okay. Of course, I have to resync my sysroot. I resynced the folders /usr/local/include, /usr/local/lib and /usr/lib/arm-linux-gnueabihf/qt5 from raspberry to host.

              Then I added this to my qmldir file:

              module org.docviewer.poppler
              PDFView 1.0 PDFView.qml
              plugin popplerPlugin
              typeinfo popplerPlugin.qmltypes
              

              But now I get the error message:

              plugin "popplerPlugin" not found
              

              What is the reason for this error message?

              jsulmJ Offline
              jsulmJ Offline
              jsulm
              Lifetime Qt Champion
              wrote on last edited by
              #12

              @Melle_87 I'm not a QML expert.
              Not sure you have to change qmldir.
              When you installed Poppler on RPi - where was it installed?

              https://forum.qt.io/topic/113070/qt-code-of-conduct

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              • jsulmJ jsulm

                @Melle_87 I'm not a QML expert.
                Not sure you have to change qmldir.
                When you installed Poppler on RPi - where was it installed?

                M Offline
                M Offline
                Melle_87
                wrote on last edited by
                #13

                @jsulm: I think on raspi it was installed in /usr/lib/arm-linux-gnueabihf/qt5/qml/org/docviewer/poppler. Because in this folder I find popplerPlugin.qmltypes.

                KroMignonK jsulmJ 2 Replies Last reply
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                • M Melle_87

                  @jsulm: I think on raspi it was installed in /usr/lib/arm-linux-gnueabihf/qt5/qml/org/docviewer/poppler. Because in this folder I find popplerPlugin.qmltypes.

                  KroMignonK Offline
                  KroMignonK Offline
                  KroMignon
                  wrote on last edited by
                  #14

                  @Melle_87 said in QML show PDF file:

                  think on raspi it was installed in /usr/lib/arm-linux-gnueabihf/qt5/qml/org/docviewer/poppler. Because in this folder I find popplerPlugin.qmltypes.

                  You can follow the import process when setting environment variable QML_IMPORT_TRACE.
                  As written in documentation, QML import path is:

                  Additional import paths can be added through QQmlEngine::addImportPath() or the QML2_IMPORT_PATH environment variable. When running the qmlscene tool, you can also use the -I option to add an import path.

                  Take a look here ==> https://doc.qt.io/qt-5/qtqml-syntax-imports.html#qml-import-path

                  It is an old maxim of mine that when you have excluded the impossible, whatever remains, however improbable, must be the truth. (Sherlock Holmes)

                  M 1 Reply Last reply
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                  • M Melle_87

                    @jsulm: I think on raspi it was installed in /usr/lib/arm-linux-gnueabihf/qt5/qml/org/docviewer/poppler. Because in this folder I find popplerPlugin.qmltypes.

                    jsulmJ Offline
                    jsulmJ Offline
                    jsulm
                    Lifetime Qt Champion
                    wrote on last edited by
                    #15

                    @Melle_87 Does it work if you do not change qmldir?

                    https://forum.qt.io/topic/113070/qt-code-of-conduct

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                    • KroMignonK KroMignon

                      @Melle_87 said in QML show PDF file:

                      think on raspi it was installed in /usr/lib/arm-linux-gnueabihf/qt5/qml/org/docviewer/poppler. Because in this folder I find popplerPlugin.qmltypes.

                      You can follow the import process when setting environment variable QML_IMPORT_TRACE.
                      As written in documentation, QML import path is:

                      Additional import paths can be added through QQmlEngine::addImportPath() or the QML2_IMPORT_PATH environment variable. When running the qmlscene tool, you can also use the -I option to add an import path.

                      Take a look here ==> https://doc.qt.io/qt-5/qtqml-syntax-imports.html#qml-import-path

                      M Offline
                      M Offline
                      Melle_87
                      wrote on last edited by
                      #16

                      @KroMignon: Thank you. So it is possible to set this QML2_IMPORT_PATH variable in Qt Creator in the Run Environment? I set this variable to /usr/lib/arm-linux-gnueabihf/qt5/qml/org/docviewer/poppler. Is this correct?

                      KroMignonK 1 Reply Last reply
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                      • jsulmJ jsulm

                        @Melle_87 Does it work if you do not change qmldir?

                        M Offline
                        M Offline
                        Melle_87
                        wrote on last edited by
                        #17

                        @jsulm: If I don't change the qmldir file I get "module "org.docviewer.poppler" is not installed".

                        1 Reply Last reply
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                        • M Melle_87

                          @KroMignon: Thank you. So it is possible to set this QML2_IMPORT_PATH variable in Qt Creator in the Run Environment? I set this variable to /usr/lib/arm-linux-gnueabihf/qt5/qml/org/docviewer/poppler. Is this correct?

                          KroMignonK Offline
                          KroMignonK Offline
                          KroMignon
                          wrote on last edited by KroMignon
                          #18

                          @Melle_87 said in QML show PDF file:

                          So it is possible to set this QML2_IMPORT_PATH variable in Qt Creator in the Run Environment?

                          Yes, I think so. But I would suggest you first to try out QML_IMPORT_TRACE to be aware why your plugin in not loaded.
                          Perhaps there are missing libs?
                          ==> https://doc.qt.io/qt-5/qtquick-debugging.html#debugging-module-imports

                          It is an old maxim of mine that when you have excluded the impossible, whatever remains, however improbable, must be the truth. (Sherlock Holmes)

                          M 1 Reply Last reply
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                          • KroMignonK KroMignon

                            @Melle_87 said in QML show PDF file:

                            So it is possible to set this QML2_IMPORT_PATH variable in Qt Creator in the Run Environment?

                            Yes, I think so. But I would suggest you first to try out QML_IMPORT_TRACE to be aware why your plugin in not loaded.
                            Perhaps there are missing libs?
                            ==> https://doc.qt.io/qt-5/qtquick-debugging.html#debugging-module-imports

                            M Offline
                            M Offline
                            Melle_87
                            wrote on last edited by Melle_87
                            #19

                            @KroMignon: Thank for alle the tipps. I leave my qmldir file as it is and only set QML2_IMPORT_PATH = /usr/lib/arm-linux-gnueabihf/qt5/qml. Now the everything seems to be loaded correctly.
                            But now I have a new problem. On start up I get a "Segmentation fault".
                            I think the problem is that I compiled poppler with qmake of Qt 5.11.3. But actually I use Qt5.12.4. I have both Qt versions on the raspi. How can I explicitly use the qmake of Qt5.12.4 for compiling poppler?

                            jsulmJ 1 Reply Last reply
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                            • M Melle_87

                              @KroMignon: Thank for alle the tipps. I leave my qmldir file as it is and only set QML2_IMPORT_PATH = /usr/lib/arm-linux-gnueabihf/qt5/qml. Now the everything seems to be loaded correctly.
                              But now I have a new problem. On start up I get a "Segmentation fault".
                              I think the problem is that I compiled poppler with qmake of Qt 5.11.3. But actually I use Qt5.12.4. I have both Qt versions on the raspi. How can I explicitly use the qmake of Qt5.12.4 for compiling poppler?

                              jsulmJ Offline
                              jsulmJ Offline
                              jsulm
                              Lifetime Qt Champion
                              wrote on last edited by
                              #20

                              @Melle_87 said in QML show PDF file:

                              How can I explicitly use the qmake of Qt5.12.4 for compiling poppler?

                              By calling the qmake from the Qt version you want to use (use absolute path to qmake).

                              https://forum.qt.io/topic/113070/qt-code-of-conduct

                              M 1 Reply Last reply
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                              • jsulmJ jsulm

                                @Melle_87 said in QML show PDF file:

                                How can I explicitly use the qmake of Qt5.12.4 for compiling poppler?

                                By calling the qmake from the Qt version you want to use (use absolute path to qmake).

                                M Offline
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                                Melle_87
                                wrote on last edited by
                                #21

                                @jsulm: Hmmm... Okay. Unfortunately in Qt5.12.4 folder there is no qmake available ...

                                jsulmJ 1 Reply Last reply
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                                • M Melle_87

                                  @jsulm: Hmmm... Okay. Unfortunately in Qt5.12.4 folder there is no qmake available ...

                                  jsulmJ Offline
                                  jsulmJ Offline
                                  jsulm
                                  Lifetime Qt Champion
                                  wrote on last edited by jsulm
                                  #22

                                  @Melle_87 said in QML show PDF file:

                                  Qt5.12.4 folder there is no qmake available

                                  Then this is not a valid Qt installation.
                                  How did you install it?

                                  https://forum.qt.io/topic/113070/qt-code-of-conduct

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                                  • jsulmJ jsulm

                                    @Melle_87 said in QML show PDF file:

                                    Qt5.12.4 folder there is no qmake available

                                    Then this is not a valid Qt installation.
                                    How did you install it?

                                    M Offline
                                    M Offline
                                    Melle_87
                                    wrote on last edited by Melle_87
                                    #23

                                    @jsulm: It was not me who installed the Qt version ... So I have to ask. But is there a way to get the qmake of this version?
                                    Or maybe it would be easier to cross compile Poppler?

                                    jsulmJ 1 Reply Last reply
                                    0
                                    • M Melle_87

                                      @jsulm: It was not me who installed the Qt version ... So I have to ask. But is there a way to get the qmake of this version?
                                      Or maybe it would be easier to cross compile Poppler?

                                      jsulmJ Offline
                                      jsulmJ Offline
                                      jsulm
                                      Lifetime Qt Champion
                                      wrote on last edited by
                                      #24

                                      @Melle_87 said in QML show PDF file:

                                      Or maybe it would be easier to cross compile Poppler?

                                      Cross compiling is more complex than building directly on the device. But you need to make sure you use same Qt version on device and host machine if you want to cross compile your app later.

                                      "But is there a way to get the qmake of this version?" - sure. If it was installed using apt then install the qt dev packages, which exactly depends on the distribution.

                                      https://forum.qt.io/topic/113070/qt-code-of-conduct

                                      M 1 Reply Last reply
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                                      • CharbyC Offline
                                        CharbyC Offline
                                        Charby
                                        wrote on last edited by
                                        #25

                                        Another quick and easy way to render a pdf with QML is to use a WebView together with pdfjs lib :

                                        WebView{
                                          url:"file:///%path_to_pdfjs%/web/viewer.html?file=file://%PathToFile%.pdf"
                                        }
                                        

                                        You can find a working example in Swag projet : https://github.com/a-team-fr/swag/blob/master/Swag/PDFElement.qml

                                        M 1 Reply Last reply
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                                        • CharbyC Charby

                                          Another quick and easy way to render a pdf with QML is to use a WebView together with pdfjs lib :

                                          WebView{
                                            url:"file:///%path_to_pdfjs%/web/viewer.html?file=file://%PathToFile%.pdf"
                                          }
                                          

                                          You can find a working example in Swag projet : https://github.com/a-team-fr/swag/blob/master/Swag/PDFElement.qml

                                          M Offline
                                          M Offline
                                          Melle_87
                                          wrote on last edited by
                                          #26

                                          @Charby: Okay, thank you. I will have a look at it.

                                          1 Reply Last reply
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