positioners-attachedproperties.qml Example File

positioners/positioners-attachedproperties.qml
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import QtQuick 2.0 import QtQuick.Controls 1.1 Rectangle { id: page property real ratio: width / 320 < height / 440 ? width / 320 : height / 440 property int elementSpacing: 6.3 * ratio width: 320 height: 440 Button { anchors.top: parent.top anchors.right: parent.right anchors.margins: 10 text: hidingRect.visible ? "Hide" : "Show" onClicked: hidingRect.visible = !hidingRect.visible } // Create column with four rectangles, the fourth one is hidden Column { id: column anchors.top: parent.top anchors.left: parent.left anchors.leftMargin: page.width / 32 anchors.topMargin: page.height / 48 spacing: page.elementSpacing Rectangle { id: green color: "#80c342" width: 100 * page.ratio height: 100 * page.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) } } Rectangle { id: blue color: "#14aaff" width: 100 * page.ratio height: 100 * page.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(blue.Positioner) } } Rectangle { id: purple color: "#6400aa" width: 100 * page.ratio height: 100 * page.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(purple.Positioner) } } // This rectangle is not visible, so it doesn't have a positioner value Rectangle { id: hidingRect color: "#006325" width: 100 * page.ratio height: 100 * page.ratio visible: false 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)" : "") } } // Print the index of the child item in the positioner and convenience // properties showing if it's the first or last item. function showInfo(positioner) { console.log("Item Index = " + positioner.index) console.log(" isFirstItem = " + positioner.isFirstItem) console.log(" isLastItem = " + positioner.isLastItem) } } }