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How to stop loading single image mutltiple times on a screen

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  • 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

      1 Reply Last reply
      0
      • 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
        0
        • 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(:^

            1 Reply Last reply
            2
            • 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
                1
                • 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

                  1 Reply Last reply
                  0
                  • 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
                    2
                    • 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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