[Interest] QML ListView anchoring fails
Nevala Samuel
samuel.nevala at theqtcompany.com
Tue Nov 11 07:30:35 CET 2014
Hi,
It seems that delegates are already created when ListView is still re-sizing and that messes up the populate transition leaving some delegates to opacity zero. It is a bug can you report it @ https://bugreports.qt-project.org/? please.
Assigning model after ListView has re-sized works with anchors and proofs that it is a bug.
ApplicationWindow {
id: main
visible: true
height: 300
width: 300
ListModel {
id: modelData
ListElement {
name: "Bill Smith"
number: "555 3264"
}
ListElement {
name: "John Brown"
number: "555 8426"
}
ListElement {
name: "Sam Wise"
number: "555 0473"
}
}
Rectangle {
anchors.fill: parent
ListView {
id: lw
anchors.fill: parent
onHeightChanged: lw.model = modelData
delegate: Rectangle {
height: 40
width: 300
opacity: 0.0
color: "lightgray"
Text {
anchors.centerIn: parent
text: name
}
Component.onCompleted: console.log(name)
}
populate: Transition {
NumberAnimation { property: "opacity"; to: 1.0 ; duration: 1000 }
}
}
}
}
Samuel Nevala
________________________________
From: interest-bounces+samuel.nevala=theqtcompany.com at qt-project.org <interest-bounces+samuel.nevala=theqtcompany.com at qt-project.org> on behalf of ashish dabhade <ashishd157 at gmail.com>
Sent: Monday, November 10, 2014 12:45 PM
To: interest at qt-project.org
Subject: [Interest] QML ListView anchoring fails
Hi All,
Why is it that anchoring (fill) ListView to parent fails in following example ?
ApplicationWindow {
id: main
visible: true
height: 300
width: 300
Rectangle {
anchors.fill: parent
ListView {
anchors.fill: parent
model: ListModel {
id: modelData
ListElement {
name: "Bill Smith"
number: "555 3264"
}
ListElement {
name: "John Brown"
number: "555 8426"
}
ListElement {
name: "Sam Wise"
number: "555 0473"
}
}
delegate: Rectangle {
height: 40
width: 300
opacity: 0.0
color: "lightgray"
Text {
anchors.centerIn: parent
text: name
}
}
populate: Transition {
NumberAnimation { property: "opacity"; to: 1.0; duration: 1000 }
}
}
}
}
If ListView or Rectangle is given width or height it works as expected. Is it a bug or am i missing something ?
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