Skip to content
  • Categories
  • Recent
  • Tags
  • Popular
  • Users
  • Groups
  • Search
  • Get Qt Extensions
  • Unsolved
Collapse
Brand Logo
  1. Home
  2. Qt Development
  3. QML and Qt Quick
  4. QML show PDF file
Forum Updated to NodeBB v4.3 + New Features

QML show PDF file

Scheduled Pinned Locked Moved Unsolved QML and Qt Quick
28 Posts 6 Posters 6.4k Views 2 Watching
  • Oldest to Newest
  • Newest to Oldest
  • Most Votes
Reply
  • Reply as topic
Log in to reply
This topic has been deleted. Only users with topic management privileges can see it.
  • 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

    M 1 Reply Last reply
    0
    • 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
      0
      • 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

        M 1 Reply Last reply
        0
        • 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
          0
          • 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

            M 1 Reply Last reply
            0
            • 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
              0
              • 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
                1
                • 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

                  M 1 Reply Last reply
                  0
                  • 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
                    0
                    • 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
                      0
                      • 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
                        0
                        • 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
                          0
                          • 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
                            1
                            • 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
                              M Offline
                              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
                              0
                              • 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

                                M 1 Reply Last reply
                                0
                                • 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
                                    1
                                    • 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
                                      1
                                      • 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
                                        0
                                        • jsulmJ jsulm

                                          @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.

                                          M Offline
                                          M Offline
                                          Melle_87
                                          wrote on last edited by
                                          #27

                                          @jsulm: Ok. Now I am sure that I am using the same Qt libs on host an Raspi. Poppler was built with the same. But now I get a SEG FAULT on start up when I set the variable QML2_IMPORT_PATH = /usr/lib/arm-linux-gnueabihf/qt5/qml in run environment.
                                          What could be the reason for that error?

                                          jsulmJ 1 Reply Last reply
                                          0

                                          • Login

                                          • Login or register to search.
                                          • First post
                                            Last post
                                          0
                                          • Categories
                                          • Recent
                                          • Tags
                                          • Popular
                                          • Users
                                          • Groups
                                          • Search
                                          • Get Qt Extensions
                                          • Unsolved