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How to exchange data between qt and javascript?

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  • jsulmJ jsulm

    @small_bird To me it's still unclear how you use JavaScript in your app.

    small_birdS Offline
    small_birdS Offline
    small_bird
    wrote on last edited by small_bird
    #5

    @jsulm Do you know three.js? I try to use that engine.

    jsulmJ 1 Reply Last reply
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    • small_birdS small_bird

      @jsulm Do you know three.js? I try to use that engine.

      jsulmJ Offline
      jsulmJ Offline
      jsulm
      Lifetime Qt Champion
      wrote on last edited by
      #6

      @small_bird But how? You're using C++/Qt and JavaScript, right?

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

      small_birdS 2 Replies Last reply
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      • jsulmJ jsulm

        @small_bird But how? You're using C++/Qt and JavaScript, right?

        small_birdS Offline
        small_birdS Offline
        small_bird
        wrote on last edited by
        #7

        @jsulm yes

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        • jsulmJ jsulm

          @small_bird But how? You're using C++/Qt and JavaScript, right?

          small_birdS Offline
          small_birdS Offline
          small_bird
          wrote on last edited by
          #8

          @jsulm So I need to transmit data between qt and javascript. How to do that? Through signal and slot mechanism.

          jsulmJ 1 Reply Last reply
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          • small_birdS small_bird

            @jsulm So I need to transmit data between qt and javascript. How to do that? Through signal and slot mechanism.

            jsulmJ Offline
            jsulmJ Offline
            jsulm
            Lifetime Qt Champion
            wrote on last edited by
            #9

            @small_bird I have no idea as long as you do not tell us how you're using JavaScript in your C++ app!

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

            small_birdS 2 Replies Last reply
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            • jsulmJ jsulm

              @small_bird I have no idea as long as you do not tell us how you're using JavaScript in your C++ app!

              small_birdS Offline
              small_birdS Offline
              small_bird
              wrote on last edited by
              #10

              @jsulm Actually, it is not c++. It is QML and javascript.

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              • small_birdS small_bird

                @jsulm Actually, it is not c++. It is QML and javascript.

                jsulmJ Offline
                jsulmJ Offline
                jsulm
                Lifetime Qt Champion
                wrote on last edited by
                #11

                @small_bird Good to know. I already asked you whether you're using QML you said no...
                If you're using QML without C++ then I'm wondering how you can use QImage as you asked before?
                Take a look at http://doc.qt.io/qt-5/qtqml-javascript-topic.html

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

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                • jsulmJ jsulm

                  @small_bird I have no idea as long as you do not tell us how you're using JavaScript in your C++ app!

                  small_birdS Offline
                  small_birdS Offline
                  small_bird
                  wrote on last edited by
                  #12

                  @jsulm However, now, I want to exchange data between C++ and javascript.

                  jsulmJ 1 Reply Last reply
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                  • small_birdS small_bird

                    @jsulm However, now, I want to exchange data between C++ and javascript.

                    jsulmJ Offline
                    jsulmJ Offline
                    jsulm
                    Lifetime Qt Champion
                    wrote on last edited by
                    #13

                    @small_bird Then exchange it between C++ and QML (check Qt documentation for this) and from QML then to JavaScript.
                    Or do you want to remove QML completely?

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

                    small_birdS 1 Reply Last reply
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                    • jsulmJ jsulm

                      @small_bird Then exchange it between C++ and QML (check Qt documentation for this) and from QML then to JavaScript.
                      Or do you want to remove QML completely?

                      small_birdS Offline
                      small_birdS Offline
                      small_bird
                      wrote on last edited by
                      #14

                      @jsulm yes I have done that. But how to exchange qimage from qml to javascript?

                      jsulmJ 1 Reply Last reply
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                      • small_birdS small_bird

                        @jsulm yes I have done that. But how to exchange qimage from qml to javascript?

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

                        @small_bird I don't know I would say it depends on that JavaScript three.js framework. Check it's API and data types.

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

                        small_birdS 2 Replies Last reply
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                        • jsulmJ jsulm

                          @small_bird I don't know I would say it depends on that JavaScript three.js framework. Check it's API and data types.

                          small_birdS Offline
                          small_birdS Offline
                          small_bird
                          wrote on last edited by
                          #16

                          @jsulm No, the javascript's grammar is the same with three.js engine.

                          jsulmJ 1 Reply Last reply
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                          • small_birdS small_bird

                            @jsulm No, the javascript's grammar is the same with three.js engine.

                            jsulmJ Offline
                            jsulmJ Offline
                            jsulm
                            Lifetime Qt Champion
                            wrote on last edited by
                            #17

                            @small_bird What do you mean by "grammar" and "engine"? three.js is a 3D JavaScript framework/library, right? So you need to check its documentation if you want to use it.

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

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                            • jsulmJ jsulm

                              @small_bird I don't know I would say it depends on that JavaScript three.js framework. Check it's API and data types.

                              small_birdS Offline
                              small_birdS Offline
                              small_bird
                              wrote on last edited by small_bird
                              #18

                              Yes, that's it. I have checked that, but how to transmit qimage data between qml and js function as it is not a inner type?

                              jsulmJ 1 Reply Last reply
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                              • small_birdS small_bird

                                Yes, that's it. I have checked that, but how to transmit qimage data between qml and js function as it is not a inner type?

                                jsulmJ Offline
                                jsulmJ Offline
                                jsulm
                                Lifetime Qt Champion
                                wrote on last edited by
                                #19

                                @small_bird said in How to exchange data between qt and javascript?:

                                That's three.js engine is written by javascript.

                                Sure it is. That's not the point. It has an API, right? See its documentation: https://threejs.org/docs/index.html#manual/introduction/Creating-a-scene

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

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