Qt Quick Examples - Shader Effects▲
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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
}
}
}
}