MacOS dock-like component in QML

Question

Using QtQuick, I have a row of 5 images in a repeater. I'd like to implement an animation on hover that's similar to the MacOS dock animation. Here's a picture for reference:

To further break it down, here's what I'm trying to accomplish. These images, on hover, should act as follows:

• Hovered images expand
• Neighboring images expand, but slightly less
• Images don't overlap on expansion

Here is the code I have so far

  Row {
    spacing: 2
    anchors.bottom: parent.bottom
    anchors.bottomMargin: 30
    anchors.horizontalCenter: parent.horizontalCenter

    Repeater {
      id: iconRepeater
      model: iconColors()
      Image {
        source: "icons/" + modelData + ".png"
        scale: mouseArea.containsMouse ? 1.5 : 1.0
        MouseArea {
          id: mouseArea
          anchors.fill: parent
          hoverEnabled: true
          onClicked: endTimer()
        }
        Behavior on scale {
          PropertyAnimation {
            duration: 75
          }
        }
      }
    }
  }

This expands the image you hover over, but I cannot seem to also effect the neighbors. Any advice is appreciated!

Answer 1

I'd suggest a little more robust solution, where you have control over the zoom factor and the spread and decay of influence:

  Column {
    Slider {
      id: foff
      from: 1
      to: 5
      stepSize: 1
      value: 2
      snapMode: Slider.SnapAlways
    }
    Slider {
      id: sf
      from: 0.5
      to: 2.5
      stepSize: 0.5
      value: 0.5
      snapMode: Slider.SnapAlways
    }
    Slider {
      id: dmp
      from: 1
      to: 5
      stepSize: 1
      value: 1
      snapMode: Slider.SnapAlways
    }
  }

  Row {
    id: row
    anchors.bottom: parent.bottom
    anchors.bottomMargin: 30
    anchors.horizontalCenter: parent.horizontalCenter

    property int falloff: foff.value // how many adjacent elements are affected
    property int current: -1
    property real scaleFactor: sf.value // that's how much extra it scales
    property real damp: dmp.value // decay of influence 

    Repeater {
      id: iconRepeater
      model: 10
      Rectangle {
        width: 50 * pseudoScale
        height: width
        anchors.bottom: parent.bottom
        color: "red"
        border.color: "black"
        property real pseudoScale: {
          if (row.current == -1) return 1
          else {
            var diff = Math.abs(index - row.current)
            diff = Math.max(0, row.falloff - diff)
            var damp = row.falloff - Math.max(1, diff)
            var sc = row.scaleFactor
            if (damp) sc /= damp * row.damp
            diff = diff / row.falloff * sc + 1
            return diff
          }
        }
        MouseArea {
          id: mouseArea
          anchors.fill: parent
          hoverEnabled: true
          onContainsMouseChanged: row.current = containsMouse ? index : -1
        }
        Behavior on pseudoScale {
          PropertyAnimation {
            duration: 150
          }
        }
      }
    }
  }