Qt Quick 3D - Effects Example

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 import QtQuick
 import QtQuick.Controls
 import QtQuick.Layouts

 Rectangle {
     id: colorPicker
     property string description
     property vector3d colorVector: Qt.vector3d(0.0, 0.0, 0.0)
     width: 200
     height: 35

     color: Qt.rgba(colorVector.x, colorVector.y, colorVector.z, 1.0)

     function close()
     {
         colorSliders.visible = false
     }

     TapHandler {
         onTapped: {
             if (!colorSliders.visible) {
                 rSlider.value = colorVector.x
                 gSlider.value = colorVector.y
                 bSlider.value = colorVector.z
             }
             colorSliders.visible = !colorSliders.visible
         }
     }

     Text {
         anchors.verticalCenter: parent.verticalCenter
         x: 20
         text: parent.description
         style: Text.Outline
         styleColor: "white"
         font.pixelSize: 20
         font.bold: true
     }
     Rectangle {
         id: colorSliders
         visible: false
         anchors.verticalCenter: colorPicker.verticalCenter
         anchors.left: colorPicker.right
         width: col.width
         height: col.height
         z: 10
         color: "#cccccc"
         Column {
             id: col
             Slider {
                 id: rSlider
                 onValueChanged: colorVector.x = value
                 Rectangle {
                     anchors.fill: parent
                     z: -1
                     color: "red"
                 }
             }
             Slider {
                 id: gSlider
                 onValueChanged: colorVector.y = value
                 Rectangle {
                     anchors.fill: parent
                     z: -1
                     color: "green"
                 }
             }
             Slider {
                 id: bSlider
                 onValueChanged: colorVector.z = value
                 Rectangle {
                     anchors.fill: parent
                     z: -1
                     color: "blue"
                 }
             }
         }
         // Very quick-and-dirty implicit mouse grabbing.
         MouseArea {
             id: implicitMouseGrabber
             x: -3000
             y: -3000
             z: -1
             width: 6000
             height: 6000

             onClicked: colorSliders.visible = false
         }
         onVisibleChanged: {
             if (visible) {
                 colorPicker.z = 10
                 colorPicker.parent.z = 10
             } else {
                 colorPicker.z = 0
                 colorPicker.parent.z = 0
             }
         }
     }
 }