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Make a line break in a layout or container

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  • E Offline
    E Offline
    EL-jos
    wrote on last edited by
    #15

    @SGaist said in Make a line break in a layout or container:

    Are you already familiar with Qt's model view programming ?

    not just the basics too much

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

      Then you should also take a look at @VRonin and @kshegunov's chat example project.

      [VRonin edited to proper attribute credit]

      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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      • E Offline
        E Offline
        EL-jos
        wrote on last edited by
        #17

        @SGaist said in Make a line break in a layout or container:

        Then you should also take a look at @VRonin's chat example project.

        All right, I'll take a look later, since @mrjj is offering me a rather simple solution.

        mrjjM 1 Reply Last reply
        0
        • E EL-jos

          @SGaist said in Make a line break in a layout or container:

          Then you should also take a look at @VRonin's chat example project.

          All right, I'll take a look later, since @mrjj is offering me a rather simple solution.

          mrjjM Offline
          mrjjM Offline
          mrjj
          Lifetime Qt Champion
          wrote on last edited by mrjj
          #18

          @EL-jos
          sorry but its not a good solution for a chat app :)
          Delegate would be much better. I was too quick to suggest QLabel/TextEdit.
          It will not scroll nice, very fast.

          Anyway, you can have images in Qlabel
          alt text

           label->setText("<html><head/><body><p>thi is the text that says heeelo hello</p><p><img src=\":/test.jpg\"/>and more hello</p></body></html>");
          

          Notice the syntax for the image
          ":/test.jpg"
          its in a resource file.

          There is an editor if you right click the QLabel on the form.
          alt text

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          • E Offline
            E Offline
            EL-jos
            wrote on last edited by
            #19

            Okay, thank you very much for your example.
            but why do you say a Delegate is much better?
            what are the advantages of the Delegate?
            and what are the disadvantages of rich text with HTML image?

            mrjjM 1 Reply Last reply
            0
            • E EL-jos

              Okay, thank you very much for your example.
              but why do you say a Delegate is much better?
              what are the advantages of the Delegate?
              and what are the disadvantages of rich text with HTML image?

              mrjjM Offline
              mrjjM Offline
              mrjj
              Lifetime Qt Champion
              wrote on last edited by
              #20

              @EL-jos
              A Delegate is a custem draw for a ListView ( or any view)
              So instead of drawing the normal cell, you make a small class where you use
              QPainter to draw the cell how you want it.
              Its much faster than having a tons of QLabels in a layout as
              Views has been optimized for having many items.

              so the clear benefit is that it works very fast and it can draw however you like.
              (well you have to program that part)

              Using html , you would have to construct the right html to have it look how u want.
              Some thing be much harder. Like the clock/time in the whatapps sample.

              With Delegate you can simply paint it there.

              However, learning to use Views and Delegates will take some practice.

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              • E Offline
                E Offline
                EL-jos
                wrote on last edited by
                #21

                @mrjj said in Make a line break in a layout or container:

                A Delegate is a custem draw for a ListView ( or any view)
                So instead of drawing the normal cell, you make a small class where you use
                QPainter to draw the cell how you want it.
                Its much faster than having a tons of QLabels in a layout as
                Views has been optimized for having many items.
                so the clear benefit is that it works very fast and it can draw however you like.
                (well you have to program that part)
                Using html , you would have to construct the right html to have it look how u want.
                Some thing be much harder. Like the clock/time in the whatapps sample.
                With Delegate you can simply paint it there.
                However, learning to use Views and Delegates will take some practice.

                Thank you very much for the answer.
                but can you give me a training link on the view and the delegate?

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

                  Did you took a look at the documentation I linked to earlier ? It does explain everything with examples.

                  There's the model view tutorial and the Item Views examples.

                  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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                  • E Offline
                    E Offline
                    EL-jos
                    wrote on last edited by
                    #23

                    @SGaist said in Make a line break in a layout or container:

                    Did you took a look at the documentation I linked to earlier ? It does explain everything with examples.

                    Yeah, but it's a little complicated for me.

                    mrjjM 1 Reply Last reply
                    0
                    • E EL-jos

                      @SGaist said in Make a line break in a layout or container:

                      Did you took a look at the documentation I linked to earlier ? It does explain everything with examples.

                      Yeah, but it's a little complicated for me.

                      mrjjM Offline
                      mrjjM Offline
                      mrjj
                      Lifetime Qt Champion
                      wrote on last edited by
                      #24

                      @EL-jos
                      Hi
                      maybe this is easier to follow ?
                      https://www.bogotobogo.com/Qt/Qt5_QListView_QStringListModel_ModelView_MVC.php

                      Try to follow the steps and build the same.
                      It looks more complicated than it is.

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                      • E Offline
                        E Offline
                        EL-jos
                        wrote on last edited by
                        #25

                        @mrjj said in Make a line break in a layout or container:

                        Try to follow the steps and build the same.
                        It looks more complicated than it is.
                        All right, I'll take your advice, anyway, thank you for your answers and I can put the subject as resolved.

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