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Led Like buttons/Widgets

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  • B BlackDogWhite

    @mrjj well, it may also be my environment, sadly. I'm trying to figure out Qt, both on the PC and on a Raspberry Pi 3, using MS Visual Studio (which I'm pretty familiar with), along with QT VS Tools and VisualGDB.

    • I can get your demo (UseTheLeds) working under Qt Creator (except for the above referenced problem) and displaying on the PC

    • I also have a working GUI program developed on the PC (with VS, Qt VS Tools, and VisualGDB) that runs both on the PC and squirts down to the Pi.

    • But trying to add the Qled code to the working GUI program breaks everything, possibly in part because the cross compiler chain (c:\sysgcc\raspberry...) cannot find QtSvg includes. When I search for QtSvg, I find it but only in a qt4 dir chain (SysGCC\raspberry\arm-linux-gnueabihf\sysroot\usr\include\qt4...)

    Ouch, I'm getting a headache!

    mrjjM Offline
    mrjjM Offline
    mrjj
    Lifetime Qt Champion
    wrote on last edited by
    #27

    @BlackDogWhite
    Hi
    Do you need it to be very scale able ?
    Else we could use png for the leds if getting the SVG module to the Pi is
    difficult.

    However, there was something odd wiht the sample. i will link a new one here as soon as its weekend :)

    B 1 Reply Last reply
    0
    • mrjjM mrjj

      @BlackDogWhite
      Hi
      Do you need it to be very scale able ?
      Else we could use png for the leds if getting the SVG module to the Pi is
      difficult.

      However, there was something odd wiht the sample. i will link a new one here as soon as its weekend :)

      B Offline
      B Offline
      BlackDogWhite
      wrote on last edited by
      #28

      @mrjj First off, I'm up for any help someone is willing to offer. A revised version would be very useful, if only to study the differences and learn something else about how all this works.

      I'm going to look, hopefully this afternoon, where my cross compiler install went wrong. Maybe I can get that upgraded to Qt5 so the SVG stuff works. But I certainly wouldn't mind seeing how it would work with PNG's!

      mrjjM 1 Reply Last reply
      0
      • B BlackDogWhite

        @mrjj First off, I'm up for any help someone is willing to offer. A revised version would be very useful, if only to study the differences and learn something else about how all this works.

        I'm going to look, hopefully this afternoon, where my cross compiler install went wrong. Maybe I can get that upgraded to Qt5 so the SVG stuff works. But I certainly wouldn't mind seeing how it would work with PNG's!

        mrjjM Offline
        mrjjM Offline
        mrjj
        Lifetime Qt Champion
        wrote on last edited by
        #29

        @BlackDogWhite

        Hi
        Here is other sample that allows copy paste of promoted widget.
        Im not sure what was up with the other. the ui file seemed stale.

        Anyway, this works. the go button show random shape and color.
        I have included only bare minimum of qled files to work.

        alt text

        https://www.dropbox.com/s/kfti0otv9ez9u28/Myleds.zip?dl=0

        B V 2 Replies Last reply
        1
        • mrjjM mrjj

          @BlackDogWhite

          Hi
          Here is other sample that allows copy paste of promoted widget.
          Im not sure what was up with the other. the ui file seemed stale.

          Anyway, this works. the go button show random shape and color.
          I have included only bare minimum of qled files to work.

          alt text

          https://www.dropbox.com/s/kfti0otv9ez9u28/Myleds.zip?dl=0

          B Offline
          B Offline
          BlackDogWhite
          wrote on last edited by
          #30

          @mrjj Thanks MrJJ. I was able to copy your code and create a project from scratch using the QLed class to render a button. On the UI I drag in a Widget object and promote it to QLed. It shows up just fine. This is all in Qt Creator 4.5.1, Qt 5.10.1 and Visual Studio 2013 for the compiler.

          I was also able to get it to work on the Raspberry Pi using VS 2013 along with Qt VS Tools and VisualGDB added in.

          Still have quite a bit to learn, never having done Qt or Pi before. But with your help I've made good progress. Maybe I'll get bold and actually try to get the plugin to work as well, but that's pretty low priority.

          Thank you for all your help. You da man!
          Ron

          mrjjM 1 Reply Last reply
          1
          • B BlackDogWhite

            @mrjj Thanks MrJJ. I was able to copy your code and create a project from scratch using the QLed class to render a button. On the UI I drag in a Widget object and promote it to QLed. It shows up just fine. This is all in Qt Creator 4.5.1, Qt 5.10.1 and Visual Studio 2013 for the compiler.

            I was also able to get it to work on the Raspberry Pi using VS 2013 along with Qt VS Tools and VisualGDB added in.

            Still have quite a bit to learn, never having done Qt or Pi before. But with your help I've made good progress. Maybe I'll get bold and actually try to get the plugin to work as well, but that's pretty low priority.

            Thank you for all your help. You da man!
            Ron

            mrjjM Offline
            mrjjM Offline
            mrjj
            Lifetime Qt Champion
            wrote on last edited by
            #31

            @BlackDogWhite
            Super :)
            well crosscompiling is not easy. So good work.
            Since you already have visual studio, it might not be huge work to get the plugin running
            but in this case it offer not so much besides seeing the leds in designer and setting type and
            color directly in Designer. ( you could also do that with dynamic properties as they are
            added to the actual widget type also when using promotion)

            1 Reply Last reply
            0
            • mrjjM mrjj

              @BlackDogWhite

              Hi
              Here is other sample that allows copy paste of promoted widget.
              Im not sure what was up with the other. the ui file seemed stale.

              Anyway, this works. the go button show random shape and color.
              I have included only bare minimum of qled files to work.

              alt text

              https://www.dropbox.com/s/kfti0otv9ez9u28/Myleds.zip?dl=0

              V Offline
              V Offline
              viniltc
              wrote on last edited by
              #32

              @mrjj

              I'm a beginner, I also came across the same problem to add a status LED in my GUI. @mrjj : unable to download the code from the mentioned link. It will be very useful if you can summarize the procedure.

              many thanks

              mrjjM 1 Reply Last reply
              0
              • V viniltc

                @mrjj

                I'm a beginner, I also came across the same problem to add a status LED in my GUI. @mrjj : unable to download the code from the mentioned link. It will be very useful if you can summarize the procedure.

                many thanks

                mrjjM Offline
                mrjjM Offline
                mrjj
                Lifetime Qt Champion
                wrote on last edited by
                #33

                @viniltc
                Hi
                Link is still ok
                https://www.dropbox.com/s/kfti0otv9ez9u28/Myleds.zip?dl=0
                just tested

                V 1 Reply Last reply
                1
                • mrjjM mrjj

                  @viniltc
                  Hi
                  Link is still ok
                  https://www.dropbox.com/s/kfti0otv9ez9u28/Myleds.zip?dl=0
                  just tested

                  V Offline
                  V Offline
                  viniltc
                  wrote on last edited by viniltc
                  #34

                  @mrjj Thanks a lot.
                  I just noticed 'layout' feature is disabled for QLed widget.
                  Please find below the screenshot. How can I enable Layout to QLed class?
                  0_1565101152046_Capture.JPG

                  1 Reply Last reply
                  0
                  • mrjjM Offline
                    mrjjM Offline
                    mrjj
                    Lifetime Qt Champion
                    wrote on last edited by mrjj
                    #35

                    Hi
                    You can right-click it and apply a layout.
                    Its not disabled. it shows no layout is assigned.
                    However,why do you want to have layout in it ?
                    It would be more normal to put the led and the other widget in a separate layout.

                    V 1 Reply Last reply
                    2
                    • mrjjM mrjj

                      Hi
                      You can right-click it and apply a layout.
                      Its not disabled. it shows no layout is assigned.
                      However,why do you want to have layout in it ?
                      It would be more normal to put the led and the other widget in a separate layout.

                      V Offline
                      V Offline
                      viniltc
                      wrote on last edited by
                      #36

                      @mrjj
                      Thanks a lot for the clarification. I'm aiming for a fully resizable GUI, that's why I need a layout. Like for example:
                      0_1565269885069_Capture.JPG (the moment it's without a layout)
                      But when I apply a grid layout to the GUI, I'm kind of struggling to get its widgets (especially LED) at its place!

                      1 Reply Last reply
                      0
                      • mrjjM Offline
                        mrjjM Offline
                        mrjj
                        Lifetime Qt Champion
                        wrote on last edited by mrjj
                        #37

                        Hi
                        Well you add a layout to the parent. (the window)
                        and then insert the Led and buttons into that layout.
                        so if you resize the window, they will all follow.

                        update
                        Ahh first saw now, you did use a grid layout, so it was about the position.
                        Luckily @Pl45m4 to the rescue :)

                        1 Reply Last reply
                        0
                        • Pl45m4P Offline
                          Pl45m4P Offline
                          Pl45m4
                          wrote on last edited by Pl45m4
                          #38

                          @viniltc

                          To realize the layout, like it is shown in your image, you dont need a GridLayout. Two VerticalLayouts paired with one HorizontalLayout should work.

                          0_1565275743067_LED.png
                          0_1565275834059_layout.png


                          If debugging is the process of removing software bugs, then programming must be the process of putting them in.

                          ~E. W. Dijkstra

                          V 1 Reply Last reply
                          3
                          • Pl45m4P Pl45m4

                            @viniltc

                            To realize the layout, like it is shown in your image, you dont need a GridLayout. Two VerticalLayouts paired with one HorizontalLayout should work.

                            0_1565275743067_LED.png
                            0_1565275834059_layout.png

                            V Offline
                            V Offline
                            viniltc
                            wrote on last edited by
                            #39

                            @pl45m4
                            Thanks a lot for the clarification :)

                            1 Reply Last reply
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