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implementing a dynamic display

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  • SGaistS SGaist

    So the serial port has a reduce set of possible interactions but they are all available through the network interface, correct ?

    Are all your devices connected to both a serial port and the network when operated ?

    mzimmersM Offline
    mzimmersM Offline
    mzimmers
    wrote on last edited by
    #7

    @SGaist said in implementing a dynamic display:

    So the serial port has a reduce set of possible interactions but they are all available through the network interface, correct ?
    Correct.

    Are all your devices connected to both a serial port and the network when operated ?

    No. In fact, both connections are brief. The serial port functionality is used for preliminary configuration, either at the factory, or by an OEM technician. The network interface is used for diagnostics or for changing configurations.

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    • SGaistS Offline
      SGaistS Offline
      SGaist
      Lifetime Qt Champion
      wrote on last edited by
      #8

      Ok, it's clearer, so in fact you could have a QListView with all of your available devices and then when you select it, you can show the "configuration" widget loaded with the information of that specific device.

      Interested in AI ? www.idiap.ch
      Please read the Qt Code of Conduct - https://forum.qt.io/topic/113070/qt-code-of-conduct

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      • mzimmersM Offline
        mzimmersM Offline
        mzimmers
        wrote on last edited by
        #9

        Ahh...that sounds like a good idea. Might be overkill, but I'm willing to go with it.

        So, before the main display is drawn, I'll have a preliminary display with which the user makes a product selection?

        I've never worked with multiple windows before. Do I create a form analogous to that defined in my widget.ui file? And would this be in another .ui file?

        kshegunovK 1 Reply Last reply
        1
        • mzimmersM mzimmers

          Ahh...that sounds like a good idea. Might be overkill, but I'm willing to go with it.

          So, before the main display is drawn, I'll have a preliminary display with which the user makes a product selection?

          I've never worked with multiple windows before. Do I create a form analogous to that defined in my widget.ui file? And would this be in another .ui file?

          kshegunovK Offline
          kshegunovK Offline
          kshegunov
          Moderators
          wrote on last edited by
          #10

          Sorry to interject, but it's still not quite clear to me if you have a way to determine what kind of device you're connected to through either interface? Or are you supposed to chose that and then establish the connection?

          Btw, I'd've put both type of interfaces in one application. It's a matter of designing the class hierarchy but you could in principle put it all - communication interfaces and application types - together and with abstract classes adding implementations should be rather easy. At a later stage you could even load the actual implementations on demand via plugins.

          Read and abide by the Qt Code of Conduct

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          • mzimmersM Offline
            mzimmersM Offline
            mzimmers
            wrote on last edited by
            #11

            There may be multiple products (of varying types) on the network. The user needs to know which one, by product name, he wishes to access. When he chooses one, I can then determine what UI components to display.

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            • SGaistS Offline
              SGaistS Offline
              SGaist
              Lifetime Qt Champion
              wrote on last edited by
              #12

              So indeed, a plugin based architecture might be best suited for that.

              Interested in AI ? www.idiap.ch
              Please read the Qt Code of Conduct - https://forum.qt.io/topic/113070/qt-code-of-conduct

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              • tekojoT Offline
                tekojoT Offline
                tekojo
                wrote on last edited by
                #13

                Kind of an unrelated note.
                It sounds like the application is for specialist use only. Can you go and ask one of the end users what they really want to do and in what order they would like to do it?

                So the products broadcast or reply to a broadcast on the network, so they can be identified? This would make it much easier for the network case.

                From the architecture side, a plugin approach makes most sense, especially as you expect future additions and changes.

                mzimmersM 1 Reply Last reply
                1
                • tekojoT tekojo

                  Kind of an unrelated note.
                  It sounds like the application is for specialist use only. Can you go and ask one of the end users what they really want to do and in what order they would like to do it?

                  So the products broadcast or reply to a broadcast on the network, so they can be identified? This would make it much easier for the network case.

                  From the architecture side, a plugin approach makes most sense, especially as you expect future additions and changes.

                  mzimmersM Offline
                  mzimmersM Offline
                  mzimmers
                  wrote on last edited by
                  #14

                  @tekojo I wish I could poll the user community on this matter -- I always like hearing from end-users before implementing an app. Unfortunately that option isn't available to me at this time.

                  Regarding using plugins: that might be overkill, given that there are only two levels of user access, and only a few levels of app functionality. I also need to be concerned with distribution, and I'm not really familiar with plugins, but a plugin exists in a separate file, right? So can I still do a static build to create a monolithic distribution entity?

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                  • mzimmersM Offline
                    mzimmersM Offline
                    mzimmers
                    wrote on last edited by
                    #15

                    I've decided to implement the additional fields using a QDialog object. I created a second form for this dialog, but then realized I don't know how to access this form programmatically. Can someone point me to some directions on this? I've done some looking but haven't found anything that tells me how to connect up a second form.

                    Clarification: I know that I want the form to be enabled when a button push delivers a signal, but I don't know how to "point to" this form programatically. I hope this makes sense; I've been struggling to find the right words to explain what I'm looking for.

                    Thanks...

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                    • SGaistS Offline
                      SGaistS Offline
                      SGaist
                      Lifetime Qt Champion
                      wrote on last edited by
                      #16

                      You usually subclass QDialog and give it the necessary API to access what you want. Depending on what you want to add, you can also simply hide what should not be used.

                      Interested in AI ? www.idiap.ch
                      Please read the Qt Code of Conduct - https://forum.qt.io/topic/113070/qt-code-of-conduct

                      mzimmersM 1 Reply Last reply
                      1
                      • SGaistS SGaist

                        You usually subclass QDialog and give it the necessary API to access what you want. Depending on what you want to add, you can also simply hide what should not be used.

                        mzimmersM Offline
                        mzimmersM Offline
                        mzimmers
                        wrote on last edited by
                        #17

                        @SGaist so each form would then have its own subclass?

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                        0
                        • SGaistS Offline
                          SGaistS Offline
                          SGaist
                          Lifetime Qt Champion
                          wrote on last edited by
                          #18

                          Just to be sure we are talking about the same thing, what do you mean by form ?

                          Interested in AI ? www.idiap.ch
                          Please read the Qt Code of Conduct - https://forum.qt.io/topic/113070/qt-code-of-conduct

                          mzimmersM 1 Reply Last reply
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                          • SGaistS SGaist

                            Just to be sure we are talking about the same thing, what do you mean by form ?

                            mzimmersM Offline
                            mzimmersM Offline
                            mzimmers
                            wrote on last edited by
                            #19

                            @SGaist by "form" I mean an entry under "Forms" in the project file; ie, a file with a .ui extension that is generated by Designer.

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                            • SGaistS Offline
                              SGaistS Offline
                              SGaist
                              Lifetime Qt Champion
                              wrote on last edited by
                              #20

                              Then that's the most common use case. You create as many "Forms" you need and give them the API you need.

                              Interested in AI ? www.idiap.ch
                              Please read the Qt Code of Conduct - https://forum.qt.io/topic/113070/qt-code-of-conduct

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                              • mzimmersM Offline
                                mzimmersM Offline
                                mzimmers
                                wrote on last edited by
                                #21

                                I see. So, when I created this project, I selected Qt Widgets Application, and Creator automatically set up the form and the class for me. Should I use that class as a model for my new form?

                                I still don't quite understand how the program "knows" to use the .ui file. I don't see the connection anywhere in my code.

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                                • SGaistS Offline
                                  SGaistS Offline
                                  SGaist
                                  Lifetime Qt Champion
                                  wrote on last edited by
                                  #22

                                  It's just a starting point. Nothing forbids you to have several forms.

                                  The .uil file is processed by uic to generate code (a bit like moc for QObject based classes) then the ui.setupUi(this); line does the "magic" to setup everything you prepared with Designer.

                                  Interested in AI ? www.idiap.ch
                                  Please read the Qt Code of Conduct - https://forum.qt.io/topic/113070/qt-code-of-conduct

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                                  • mzimmersM Offline
                                    mzimmersM Offline
                                    mzimmers
                                    wrote on last edited by
                                    #23

                                    I've tried to implement a new class (patterned after my main form)...obviously I don't understand something.

                                    Here's the header:

                                    #ifndef CREDENTIALS_H
                                    #define CREDENTIALS_H
                                    
                                    #include <QWidget>
                                    
                                    namespace Ui
                                    {
                                        class Credentials;
                                    }
                                    class Credentials : public QWidget
                                    {
                                        Q_OBJECT
                                    public:
                                        explicit Credentials(QWidget *parent = nullptr);
                                    private:
                                        Ui::Credentials *uiCredentials;
                                    };
                                    
                                    #endif // CREDENTIALS_H
                                    

                                    and here's the source:

                                    #include "credentials.h"
                                    #include "ui_credentials.h"
                                    
                                    Credentials::Credentials(QWidget *parent)
                                        : QWidget(parent),
                                          uiCredentials(new Ui::Credentials)
                                    
                                    {
                                        uiCredentials->setupUi(this);
                                    }
                                    

                                    I'm getting an error "invalid use of incomplete type 'class Ui::Credentials'. Why is it incomplete?

                                    kshegunovK 1 Reply Last reply
                                    0
                                    • mzimmersM mzimmers

                                      I've tried to implement a new class (patterned after my main form)...obviously I don't understand something.

                                      Here's the header:

                                      #ifndef CREDENTIALS_H
                                      #define CREDENTIALS_H
                                      
                                      #include <QWidget>
                                      
                                      namespace Ui
                                      {
                                          class Credentials;
                                      }
                                      class Credentials : public QWidget
                                      {
                                          Q_OBJECT
                                      public:
                                          explicit Credentials(QWidget *parent = nullptr);
                                      private:
                                          Ui::Credentials *uiCredentials;
                                      };
                                      
                                      #endif // CREDENTIALS_H
                                      

                                      and here's the source:

                                      #include "credentials.h"
                                      #include "ui_credentials.h"
                                      
                                      Credentials::Credentials(QWidget *parent)
                                          : QWidget(parent),
                                            uiCredentials(new Ui::Credentials)
                                      
                                      {
                                          uiCredentials->setupUi(this);
                                      }
                                      

                                      I'm getting an error "invalid use of incomplete type 'class Ui::Credentials'. Why is it incomplete?

                                      kshegunovK Offline
                                      kshegunovK Offline
                                      kshegunov
                                      Moderators
                                      wrote on last edited by kshegunov
                                      #24
                                      #include "ui_credentials_form_file_name.h"
                                      

                                      Read and abide by the Qt Code of Conduct

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                                      2
                                      • mzimmersM Offline
                                        mzimmersM Offline
                                        mzimmers
                                        wrote on last edited by
                                        #25

                                        I think I'm already doing that -- in the source file:

                                        #include "credentials.h"
                                         ***** #include "ui_credentials.h" *****
                                        Credentials::Credentials(QWidget *parent)
                                        

                                        0_1510758968869_credential.PNG

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                                        0
                                        • SGaistS Offline
                                          SGaistS Offline
                                          SGaist
                                          Lifetime Qt Champion
                                          wrote on last edited by
                                          #26

                                          Did you re-run qmake after adding your new form ?

                                          Interested in AI ? www.idiap.ch
                                          Please read the Qt Code of Conduct - https://forum.qt.io/topic/113070/qt-code-of-conduct

                                          mzimmersM 1 Reply Last reply
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