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  4. How to increase the "scrolling height" of a Qml ListView?
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How to increase the "scrolling height" of a Qml ListView?

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  • D Offline
    D Offline
    DavidM29
    wrote on 12 Jul 2018, 05:56 last edited by DavidM29 7 Dec 2018, 07:06
    #2

    You can put your ListView into a Rectangle or an Item with the size of your available space.

    Here is an example :

        Rectangle{ // Can be replace with Item 
            id: lisView
            height: parent.height-banner.height  // Make sure to set height or width or you could lose the scroll
            width: parent.width
            ListView{ // Your ListView you can put what you want in it
                spacing : 2
                model : 30
                delegate: Rectangle {
                    height: 20
                    width: 50
                    border.color: "black"
                    border.width: 1
                    color: "blue"
                }
                anchors.fill: parent
            }
        }
        Rectangle{  // did not have your banner component so I replaced it with a rectangle but the idea is the same
            id: banner
            width: parent.width
            height: 50
            opacity: 0.4 //Set the opacity to make sure their is no more elements to show on the bottom of the ListView
            anchors.bottom: parent.bottom
        }
    

    Hope this help

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    • D Offline
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      daljit97
      wrote on 12 Jul 2018, 13:18 last edited by
      #3

      The problem is that I want my list to visible behind the banner (which is transparent). Your solution would constrain me to make the list on top of the banner.

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      • O Offline
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        ODБOï
        wrote on 12 Jul 2018, 13:25 last edited by ODБOï 7 Dec 2018, 16:42
        #4
        This post is deleted!
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        • D Offline
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          DavidM29
          wrote on 12 Jul 2018, 13:26 last edited by DavidM29 7 Dec 2018, 13:34
          #5

          I don't really understand what you mean.

          Can you please make a screenshot of your problem and draw what you are expecting ?

          Here is what I did :
          0_1531401804196_2eced7cd-c0c9-4ee1-807c-1c2b305441b7-image.png

          Here is what it looks like without adapting your list in a Rectangle :
          0_1531401949159_cc51b3be-1c05-46b6-9d43-edaab8487311-image.png

          Here with the banner on top of the listView :
          0_1531402450199_67f7a938-4f3b-4f3c-bba6-7cad5ae3f4c2-image.png

          I don't really get what is wrong

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          • V Offline
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            VRonin
            wrote on 12 Jul 2018, 13:28 last edited by
            #6

            Can you layout the banner below the view rather than on top?

            "La mort n'est rien, mais vivre vaincu et sans gloire, c'est mourir tous les jours"
            ~Napoleon Bonaparte

            On a crusade to banish setIndexWidget() from the holy land of Qt

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            • D Offline
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              daljit97
              wrote on 12 Jul 2018, 16:31 last edited by
              #7

              @DavidM29 So what I want is the list to be partial visible behind the transparent banner (like in your 2nd screenshot), however when the user scrolls up they are able to scroll until the content of the ListView sits on top of the banner.

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              • S Offline
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                shaan7
                wrote on 12 Jul 2018, 17:37 last edited by
                #8

                @daljit97 have you explored the footer and footerPositioning properties of ListView?

                D 1 Reply Last reply 12 Jul 2018, 22:30
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                • S shaan7
                  12 Jul 2018, 17:37

                  @daljit97 have you explored the footer and footerPositioning properties of ListView?

                  D Offline
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                  daljit97
                  wrote on 12 Jul 2018, 22:30 last edited by
                  #9

                  @shaan7 The problem is this a banner that needs to visible in the entire application so it cannot be attached to the ListView

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                  • G Offline
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                    GrecKo
                    Qt Champions 2018
                    wrote on 12 Jul 2018, 22:50 last edited by GrecKo 7 Dec 2018, 22:58
                    #10

                    Add bottomMargin: banner.height to your ListView

                    EDIT: and as @shaan7 said, a footer with a z: 2 and footerPositioning: ListView.OverlayFooter works too.

                    D 1 Reply Last reply 13 Jul 2018, 16:48
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                    • G GrecKo
                      12 Jul 2018, 22:50

                      Add bottomMargin: banner.height to your ListView

                      EDIT: and as @shaan7 said, a footer with a z: 2 and footerPositioning: ListView.OverlayFooter works too.

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                      daljit97
                      wrote on 13 Jul 2018, 16:48 last edited by
                      #11

                      @GrecKo setting the bottomMargin will make the view sit on top of the banner. I want the list to be behind the transparent banner and when the user is nearly at the end they can scroll the content above the bannner

                      G 1 Reply Last reply 13 Jul 2018, 19:45
                      0
                      • D daljit97
                        13 Jul 2018, 16:48

                        @GrecKo setting the bottomMargin will make the view sit on top of the banner. I want the list to be behind the transparent banner and when the user is nearly at the end they can scroll the content above the bannner

                        G Offline
                        G Offline
                        GrecKo
                        Qt Champions 2018
                        wrote on 13 Jul 2018, 19:45 last edited by
                        #12

                        @daljit97 said in How to increase the "scrolling height" of a Qml ListView?:

                        @GrecKo setting the bottomMargin will make the view sit on top of the banner.

                        No, it has nothing to do with that.
                        Just place the banner on top of your ListView's delegate.
                        If your banner is a child of your ListView, set z: 2.
                        If it's a sibling of the ListView, declare it after or with a higher z.

                        See http://doc.qt.io/qt-5/qml-qtquick-item.html#z-prop and http://doc.qt.io/qt-5/qml-qtquick-listview.html#stacking-order-in-listview

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                        • D Offline
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                          daljit97
                          wrote on 13 Jul 2018, 20:00 last edited by
                          #13

                          @GrecKo oh thank you very much. I confused bottomMargin for anchors.bottomMargin. I wasn't aware of this property being available. This is exactly what I needed!

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