shadereffects.qml Example File | Qt Quick 5.12.11

- Qt 5.12
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- Qt Quick Examples - Shader Effects
- shadereffects.qml Example File
- Qt 5.12.11 Reference Documentation

# shadereffects.qml Example File

shadereffects/shadereffects.qml

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     import QtQuick 2.0
     import QtQml.Models 2.1
     import "content"

     Rectangle {
         id: root
         width: 320
         height: 480
         property color col: "lightsteelblue"
         gradient: Gradient {
             GradientStop { position: 0.0; color: Qt.tint(root.col, "#20FFFFFF") }
             GradientStop { position: 0.1; color: Qt.tint(root.col, "#20AAAAAA") }
             GradientStop { position: 0.9; color: Qt.tint(root.col, "#20666666") }
             GradientStop { position: 1.0; color: Qt.tint(root.col, "#20000000") }
         }

         ShaderEffectSource {
             id: theSource
             sourceItem: theItem
         }

         function saturate(x) {
             return Math.min(Math.max(x, 0), 1)
         }

         function sliderToColor(x) {
             return Qt.rgba(saturate(Math.max(2 - 6 * x, 6 * x - 4)),
                             saturate(Math.min(6 * x, 4 - 6 * x)),
                             saturate(Math.min(6 * x - 2, 6 - 6 * x)))
         }

         Grid {
             anchors.centerIn: parent
             columns: 2

             Item {
                 id: theItem
                 width: 160
                 height: 160
                 ListView {
                     anchors.centerIn: parent
                     width: 160
                     height: 140
                     clip: true
                     snapMode: ListView.SnapOneItem
                     model: ObjectModel {
                         Text {
                             width: 160
                             height: 140
                             horizontalAlignment: Text.AlignHCenter
                             verticalAlignment: Text.AlignVCenter
                             font.pixelSize: 118
                             font.family: "Times"
                             color: "blue"
                             text: "Qt"
                         }
                         Image {
                             width: 160
                             height: 140
                             source: "content/qt-logo.png"
                         }
                         Image {
                             width: 160
                             height: 140
                             source: "content/face-smile.png"
                         }
                     }
                 }
             }
             ShaderEffect {
                 width: 160
                 height: 160
                 property variant source: theSource
                 property real amplitude: 0.04 * wobbleSlider.value
                 property real frequency: 20
                 property real time: 0
                 NumberAnimation on time { loops: Animation.Infinite; from: 0; to: Math.PI * 2; duration: 600 }
                 fragmentShader: "qrc:shadereffects/content/shaders/wobble.frag"
                 Slider {
                     id: wobbleSlider
                     anchors.left: parent.left
                     anchors.right: parent.right
                     anchors.bottom: parent.bottom
                     height: 40
                 }
             }
             ShaderEffect {
                 width: 160
                 height: 160
                 property variant source: theSource
                 property variant shadow: ShaderEffectSource {
                     sourceItem: ShaderEffect {
                         width: theItem.width
                         height: theItem.height
                         property variant delta: Qt.size(0.0, 1.0 / height)
                         property variant source: ShaderEffectSource {
                             sourceItem: ShaderEffect {
                                 width: theItem.width
                                 height: theItem.height
                                 property variant delta: Qt.size(1.0 / width, 0.0)
                                 property variant source: theSource
                                 fragmentShader: "qrc:shadereffects/content/shaders/blur.frag"
                             }
                         }
                         fragmentShader: "qrc:shadereffects/content/shaders/blur.frag"
                     }
                 }
                 property real angle: 0
                 property variant offset: Qt.point(15.0 * Math.cos(angle), 15.0 * Math.sin(angle))
                 NumberAnimation on angle { loops: Animation.Infinite; from: 0; to: Math.PI * 2; duration: 6000 }
                 property variant delta: Qt.size(offset.x / width, offset.y / height)
                 property real darkness: shadowSlider.value
                 fragmentShader: "qrc:shadereffects/content/shaders/shadow.frag"
                 Slider {
                     id: shadowSlider
                     anchors.left: parent.left
                     anchors.right: parent.right
                     anchors.bottom: parent.bottom
                     height: 40
                 }
             }
             ShaderEffect {
                 width: 160
                 height: 160
                 property variant source: theSource
                 property variant delta: Qt.size(0.5 / width, 0.5 / height)
                 fragmentShader: "qrc:shadereffects/content/shaders/outline.frag"
             }
             ShaderEffect {
                 width: 160
                 height: 160
                 property variant source: theSource
                 property color tint: root.sliderToColor(colorizeSlider.value)
                 fragmentShader: "qrc:shadereffects/content/shaders/colorize.frag"
                 Slider {
                     id: colorizeSlider
                     anchors.left: parent.left
                     anchors.right: parent.right
                     anchors.bottom: parent.bottom
                     height: 40
                 }
             }
             ShaderEffect {
                 width: 160
                 height: 160
                 property variant source: theSource
                 property real bend: 0
                 property real minimize: 0
                 property real side: genieSlider.value
                 SequentialAnimation on bend {
                     loops: Animation.Infinite
                     NumberAnimation { to: 1; duration: 700; easing.type: Easing.InOutSine }
                     PauseAnimation { duration: 1600 }
                     NumberAnimation { to: 0; duration: 700; easing.type: Easing.InOutSine }
                     PauseAnimation { duration: 1000 }
                 }
                 SequentialAnimation on minimize {
                     loops: Animation.Infinite
                     PauseAnimation { duration: 300 }
                     NumberAnimation { to: 1; duration: 700; easing.type: Easing.InOutSine }
                     PauseAnimation { duration: 1000 }
                     NumberAnimation { to: 0; duration: 700; easing.type: Easing.InOutSine }
                     PauseAnimation { duration: 1300 }
                 }
                 mesh: Qt.size(10, 10)
                 vertexShader: "qrc:shadereffects/content/shaders/genie.vert"
                 Slider {
                     id: genieSlider
                     anchors.left: parent.left
                     anchors.right: parent.right
                     anchors.bottom: parent.bottom
                     height: 40
                 }
             }
         }
     }