Qt 4.7: Grayscale.qml Example File (declarative/shadereffects/qml/Grayscale.qml)

Qt Reference Documentation

# Grayscale.qml Example File

declarative/shadereffects/qml/Grayscale.qml

     /****************************************************************************
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     ** Contact: Nokia Corporation (qt-info@nokia.com)
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     ** This file is part of the examples of the Qt Toolkit.
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     import QtQuick 1.0
     import Qt.labs.shaders 1.0

     Item {
         id: main
         anchors.fill: parent

         GrayscaleEffect {
             id: layer
             anchors.fill: parent

             source: ShaderEffectSource {
                 sourceItem: Image { source: "images/desaturate.jpg" }
                 live: false
                 hideSource: true
             }

             SequentialAnimation on ratio {
                 id: ratioAnimation
                 running: true
                 loops: Animation.Infinite
                 NumberAnimation {
                     easing.type: Easing.Linear
                     to: 0.0
                     duration: 1500
                 }
                 PauseAnimation { duration: 1000 }
                 NumberAnimation {
                     easing.type: Easing.Linear
                     to: 1.0
                     duration: 1500
                 }
                 PauseAnimation { duration: 1000 }
             }
         }
     }