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How to stop loading single image mutltiple times on a screen

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  • sierdzioS Offline
    sierdzioS Offline
    sierdzio
    Moderators
    wrote on last edited by
    #7

    @RG90 said in How to stop loading single image mutltiple times on a screen:

    source: R_URL
    sourceComponent: dividerSix

    You are setting your Image (dividerSix) in each delegate. So, each time that new delegate is instantiated, a new Image will be loaded.

    By the way, you should not set source and sourceComponent at the same time. Pick either one (you probably only need R_URL in your case).

    (Z(:^

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    0
    • sierdzioS sierdzio

      @RG90 said in How to stop loading single image mutltiple times on a screen:

      source: R_URL
      sourceComponent: dividerSix

      You are setting your Image (dividerSix) in each delegate. So, each time that new delegate is instantiated, a new Image will be loaded.

      By the way, you should not set source and sourceComponent at the same time. Pick either one (you probably only need R_URL in your case).

      R Offline
      R Offline
      RG90
      wrote on last edited by
      #8
      This post is deleted!
      1 Reply Last reply
      0
      • sierdzioS sierdzio

        @RG90 said in How to stop loading single image mutltiple times on a screen:

        source: R_URL
        sourceComponent: dividerSix

        You are setting your Image (dividerSix) in each delegate. So, each time that new delegate is instantiated, a new Image will be loaded.

        By the way, you should not set source and sourceComponent at the same time. Pick either one (you probably only need R_URL in your case).

        R Offline
        R Offline
        RG90
        wrote on last edited by
        #9

        @sierdzio
        ok, I would like to make even dividerSix as a dynamic as of buttons. how could I go it. Is their is a possibility of making both the components move dynamically. Can you help me on this.

        Thanks

        1 Reply Last reply
        1
        • sierdzioS sierdzio

          Nothing in this snippet suggests how buttons are connected to the Image component. Actually, no buttons are shown in the snippet at all.

          Is source or sourceComponent set anywhere for the Loader? I don't see it. It is a big unusual to position a non-loaded component (in your case, Image) inside a Loader.

          source: (*.png") what's that about? Does not look like valid code.

          I'm sorry but this code is not enough to determine your problem. We need to know how you instantiate your buttons, and what is the connection between the image and buttons.

          R Offline
          R Offline
          RG90
          wrote on last edited by
          #10

          @sierdzio

          @sierdzio

          GridView
          {
          signal buttonAction(int index, int action)

          property int itemWidth: 195
          property int itemHeight: 80

          id: view
          objectName: "view"

          focus: true

          anchors.fill: parent

          cellHeight: view.height / 2
          cellWidth: view.width / 3
          flow: GridView.FlowTopToBottom

          Component{

          id: dividerSix

          Image {
              id: img
              objectName: "img"
          
              asynchronous: true
          
              source: (T.skin + "/menu/divider_six.png")
          
              fillMode: Image.PreserveAspectFit
              anchors{
                  horizontalCenter: parent.horizontalCenter
                  verticalCenter: parent.verticalCenter
              }
          }
          

          }

          delegate:Component {

          FocusScope {
              id: container
          
              property bool current: GridView.isCurrentItem
          
              width: view.cellWidth
              height: view.cellHeight
          
              Loader {
                  id: loader
          
                  focus: true
          
                  width: itemWidth
                  height: itemHeight
          
                  anchors{
                      horizontalCenter: parent.horizontalCenter
                      verticalCenter: parent.verticalCenter
                  }
          
                  asynchronous: true
          
                  source: R_URL
                  sourceComponent: dividerSix
          
                  Binding {
                      target: loader.item
                      property: "focus"
                      value: container.activeFocus
                  }
          
                  Connections {
                      target: loader.item
                      onButtonAction: {
                          switch (action) {
                          case ButtonActions.PRESSED:
                              view.highlightMoveDuration = 0;
                              container.GridView.view.currentIndex = index;
                              loader.item.forceActiveFocus();
                              view.highlightMoveDuration = -1;
                              break;
                           }
                      }
                  }
              }
          }
          

          }
          }

          Here is my whole code. When I am adding sourceComponent to loader it is loading the img multiple times depending on buttons. How Can I stop it by loading it and just load only one image

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          • sierdzioS Offline
            sierdzioS Offline
            sierdzio
            Moderators
            wrote on last edited by
            #11

            @RG90 said in How to stop loading single image mutltiple times on a screen:

            ok, I would like to make even dividerSix as a dynamic as of buttons. how could I go it. Is their is a possibility of making both the components move dynamically

            Sorry but I don't understand what you mean at all.

            What do you want to achieve, exactly? A button with an image inside it? How should it look like? Then such simple construct should work:

            GridView {
            
              Repeater {
                // put here how many items should be generated
                Button {
                  text: "something " + index
            
                  Image {
                     anchors.verticalCenter: parent.verticalCenter
                     anchors.right: parent.right
                     anchors.rightMargin: 5
                     source: "my image source"
                 }
                }
              }
            }
            

            But I'm shooting blind here. I don't know what you are trying to achieve, and why you use Loaders so much. Are components loaded from the Internet?

            (Z(:^

            R 1 Reply Last reply
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            • sierdzioS sierdzio

              @RG90 said in How to stop loading single image mutltiple times on a screen:

              ok, I would like to make even dividerSix as a dynamic as of buttons. how could I go it. Is their is a possibility of making both the components move dynamically

              Sorry but I don't understand what you mean at all.

              What do you want to achieve, exactly? A button with an image inside it? How should it look like? Then such simple construct should work:

              GridView {
              
                Repeater {
                  // put here how many items should be generated
                  Button {
                    text: "something " + index
              
                    Image {
                       anchors.verticalCenter: parent.verticalCenter
                       anchors.right: parent.right
                       anchors.rightMargin: 5
                       source: "my image source"
                   }
                  }
                }
              }
              

              But I'm shooting blind here. I don't know what you are trying to achieve, and why you use Loaders so much. Are components loaded from the Internet?

              R Offline
              R Offline
              RG90
              wrote on last edited by
              #12

              @sierdzio

              I want to make button to be dragged along with Image. I just want it has one component so that when a user tries to drag a button, even Image also get dragged by delegate behavior. Can we use two components in one delegate so that we can get this behavior?.

              sierdzioS 1 Reply Last reply
              0
              • R RG90

                @sierdzio

                I want to make button to be dragged along with Image. I just want it has one component so that when a user tries to drag a button, even Image also get dragged by delegate behavior. Can we use two components in one delegate so that we can get this behavior?.

                sierdzioS Offline
                sierdzioS Offline
                sierdzio
                Moderators
                wrote on last edited by
                #13

                @RG90 said in How to stop loading single image mutltiple times on a screen:

                @sierdzio

                I want to make button to be dragged along with Image. I just want it has one component so that when a user tries to drag a button, even Image also get dragged by delegate behavior. Can we use two components in one delegate so that we can get this behavior?.

                Yes, of course. QML supports nesting, and that is what I already provided you in my previous comment.

                A different solution (with dragging. Pseudo code, I have no time to test it), maybe it will suit you better:

                Item {
                  width: 100
                  height: 100
                
                  Drag.active: true
                
                  RowLayout {
                    anchors.fill: parent
                    Button { ... }
                    Image { ... }
                  }
                }
                

                (Z(:^

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                • R Offline
                  R Offline
                  RG90
                  wrote on last edited by RG90
                  #14

                  Thanks @sierdzio for your suggestion. my issue has been solved. I just used GridView inside a Flickable, which made much easier to me.

                  1 Reply Last reply
                  2
                  • sierdzioS Offline
                    sierdzioS Offline
                    sierdzio
                    Moderators
                    wrote on last edited by
                    #15

                    OK, so you wanted a scrollable/ flickable control, not to drag items around.

                    Fine, I'm happy you've got it to work :-)

                    (Z(:^

                    R 1 Reply Last reply
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                    • sierdzioS sierdzio

                      OK, so you wanted a scrollable/ flickable control, not to drag items around.

                      Fine, I'm happy you've got it to work :-)

                      R Offline
                      R Offline
                      RG90
                      wrote on last edited by
                      #16

                      @sierdzio
                      I have one more question, how can I stop flickable/scrollable vertically. I just need it be scrollable only on X-axis(horizontally). How can I use flickableHorizontally propertty

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                      • sierdzioS Offline
                        sierdzioS Offline
                        sierdzio
                        Moderators
                        wrote on last edited by
                        #17

                        Can't check the docs now, but it was something like:

                        flickableDirection: Flickable.flickHorizontally
                        

                        (Z(:^

                        R 1 Reply Last reply
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                        • sierdzioS sierdzio

                          Can't check the docs now, but it was something like:

                          flickableDirection: Flickable.flickHorizontally
                          
                          R Offline
                          R Offline
                          RG90
                          wrote on last edited by
                          #18

                          @sierdzio
                          Yes, It worked for me.

                          1 Reply Last reply
                          2
                          • sierdzioS Offline
                            sierdzioS Offline
                            sierdzio
                            Moderators
                            wrote on last edited by
                            #19

                            Great! Happy coding :-)

                            (Z(:^

                            1 Reply Last reply
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