QtQuick.qtquick-positioners-example

src="https://assets.ubuntu.com/v1/5a78b3db-qml-positioners-example.png" alt="" />

Positioners is a collection of small QML examples relating to positioners. Each example is a small QML file emphasizing a particular type or feature. For more information, visit Important Concepts In Qt Quick - Positioning.

Running the Example

To run the example from Qt Creator, open the Welcome mode and select the example from Examples. For more information, visit Building and Running an Example.

Transitions

Transitions shows animated transitions when showing or hiding items in a positioner. It consists of a scene populated with items in a variety of positioners: Column, Row, Grid, and Flow. Each positioner has animations described as Transitions.

move: Transition {
NumberAnimation { properties: "x,y"; easing.type: Easing.OutBounce }
}

The move transition specifies how items inside a positioner will animate when they are displaced by the appearance or disappearance of other items.

add: Transition {
NumberAnimation { properties: "x,y"; easing.type: Easing.OutBounce }
}

The add transition specifies how items will appear when they are added to a positioner.

populate: Transition {
NumberAnimation { properties: "x,y"; from: 200; duration: 100; easing.type: Easing.OutBounce }
}

The populate transition specifies how items will appear when their parent positioner is first created.

Attached Properties

Attached Properties shows how the Positioner attached property can be used to determine where an item is within a positioner.

Rectangle {
id: green
color: "#80c342"
width: 100  ratio
height: 100  ratio
Text {
anchors.left: parent.right
anchors.leftMargin: 20
anchors.verticalCenter: parent.verticalCenter
text: "Index: " + parent.Positioner.index
+ (parent.Positioner.isFirstItem ? " (First)" : "")
+ (parent.Positioner.isLastItem ? " (Last)" : "")
}
// When mouse is clicked, display the values of the positioner
MouseArea {
anchors.fill: parent
onClicked: column.showInfo(green.Positioner)
}
}

Files:

• positioners/positioners-attachedproperties.qml
• positioners/positioners-transitions.qml
• positioners/positioners.qml
• positioners/main.cpp
• positioners/positioners.pro
• positioners/positioners.qmlproject
• positioners/positioners.qrc