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// Copyright (C) 2016 Canonical Limited and/or its subsidiary(-ies).
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only
import QtQuick 2.3
ListView {
id: list
width: 400
height: 600
model: ListModel {
ListElement { kind: "Bought" }
ListElement { kind: "Available To Buy" }
}
delegate: GridView {
id: grid
objectName: "grid"
height: Math.ceil(count / (width / cellWidth)) * cellHeight / 1
width: list.width
interactive: false
property int count: 50
cellHeight: 200
cellWidth: cellHeight
model: count
property int createdItems: 0
property int destroyedItems: 0
delegate: Item {
objectName: "delegate"
width: cellWidth
height: cellHeight
Rectangle {
width: parent.width - 20
height: parent.height - 20
anchors.centerIn: parent
color: Math.random() * 2 > 1 ? "green" : "yellow";
Text {
text: index
}
Component.onCompleted: createdItems++
Component.onDestruction: destroyedItems++
}
}
displayMarginBeginning: 0
displayMarginEnd: -height
function updatedDelegateCreationRange() {
if (list.contentY + list.height <= grid.y) {
// Not visible
grid.displayMarginBeginning = 0
grid.displayMarginEnd = -grid.height
} else if (grid.y + grid.height <= list.contentY) {
// Not visible
grid.displayMarginBeginning = -grid.height
grid.displayMarginEnd = 0
} else {
grid.displayMarginBeginning = -Math.max(list.contentY - grid.y, 0)
grid.displayMarginEnd = -Math.max(grid.height - list.height - list.contentY + grid.y, 0)
}
}
Component.onCompleted: updatedDelegateCreationRange();
onHeightChanged: updatedDelegateCreationRange();
Connections {
target: list
onContentYChanged: updatedDelegateCreationRange();
onHeightChanged: updatedDelegateCreationRange();
}
}
section.property: "kind"
section.delegate: Text {
height: 40
font.pixelSize: 30
text: section
}
}
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