QML ListView,滚动时如何使列表元素不与 header 重叠
QML ListView, How to make list elements to not overlap the header, when scrolling
我有启用了 header 委托的 ListView。我有一个 header 定位 属性 设置为 "OverlayHeader"。 header 将在滚动元素时保持原位。但是,元素将重叠 header。有没有办法防止这种情况。
列表元素与 header 重叠的示例。
import QtQuick 2.5
Rectangle {
width: 360; height: 600
ListView {
width: 350; height: 200
anchors.centerIn: parent
id: myList
model: myModel
highlight: highlightBar
clip: true
snapMode: ListView.SnapToItem
headerPositioning: ListView.OverlayHeader
header: Rectangle {
id: headerItem
width: myList.width
height:50
color: "blue"
Text {
text: "HEADER"
color: "red"
}
}
delegate: Item {
id: delegateItem
width: 400; height: 20
clip: true
Text { text: name
}
MouseArea {
id: mArea
anchors.fill: parent
onClicked: { myList.currentIndex = index; }
}
}
}
Component {
id: highlightBar
Rectangle {
width: parent.width; height: 20
color: "#FFFF88"
}
}
ListModel {
id: myModel
}
/* Fill the model with default values on startup */
Component.onCompleted: {
for(var i = 0; i < 100; i++) {
myModel.append({ name: "Big Animal : " + i});
}
}
}
header's default z
value is 1
,所以你可以将它设置为更高的值以确保它超过了委托:
import QtQuick 2.5
Rectangle {
width: 360
height: 600
ListView {
width: 350
height: 200
anchors.centerIn: parent
id: myList
model: myModel
highlight: highlightBar
clip: true
snapMode: ListView.SnapToItem
headerPositioning: ListView.OverlayHeader
header: Rectangle {
id: headerItem
width: myList.width
height: 50
z: 2
color: "blue"
Text {
text: "HEADER"
color: "red"
}
}
delegate: Item {
id: delegateItem
width: 400
height: 20
Text {
text: name
}
MouseArea {
id: mArea
anchors.fill: parent
onClicked: {
myList.currentIndex = index
}
}
}
}
Component {
id: highlightBar
Rectangle {
width: parent.width
height: 20
color: "#FFFF88"
}
}
ListModel {
id: myModel
}
/* Fill the model with default values on startup */
Component.onCompleted: {
for (var i = 0; i < 100; i++) {
myModel.append({
name: "Big Animal : " + i
})
}
}
}
我有启用了 header 委托的 ListView。我有一个 header 定位 属性 设置为 "OverlayHeader"。 header 将在滚动元素时保持原位。但是,元素将重叠 header。有没有办法防止这种情况。
列表元素与 header 重叠的示例。
import QtQuick 2.5
Rectangle {
width: 360; height: 600
ListView {
width: 350; height: 200
anchors.centerIn: parent
id: myList
model: myModel
highlight: highlightBar
clip: true
snapMode: ListView.SnapToItem
headerPositioning: ListView.OverlayHeader
header: Rectangle {
id: headerItem
width: myList.width
height:50
color: "blue"
Text {
text: "HEADER"
color: "red"
}
}
delegate: Item {
id: delegateItem
width: 400; height: 20
clip: true
Text { text: name
}
MouseArea {
id: mArea
anchors.fill: parent
onClicked: { myList.currentIndex = index; }
}
}
}
Component {
id: highlightBar
Rectangle {
width: parent.width; height: 20
color: "#FFFF88"
}
}
ListModel {
id: myModel
}
/* Fill the model with default values on startup */
Component.onCompleted: {
for(var i = 0; i < 100; i++) {
myModel.append({ name: "Big Animal : " + i});
}
}
}
header's default z
value is 1
,所以你可以将它设置为更高的值以确保它超过了委托:
import QtQuick 2.5
Rectangle {
width: 360
height: 600
ListView {
width: 350
height: 200
anchors.centerIn: parent
id: myList
model: myModel
highlight: highlightBar
clip: true
snapMode: ListView.SnapToItem
headerPositioning: ListView.OverlayHeader
header: Rectangle {
id: headerItem
width: myList.width
height: 50
z: 2
color: "blue"
Text {
text: "HEADER"
color: "red"
}
}
delegate: Item {
id: delegateItem
width: 400
height: 20
Text {
text: name
}
MouseArea {
id: mArea
anchors.fill: parent
onClicked: {
myList.currentIndex = index
}
}
}
}
Component {
id: highlightBar
Rectangle {
width: parent.width
height: 20
color: "#FFFF88"
}
}
ListModel {
id: myModel
}
/* Fill the model with default values on startup */
Component.onCompleted: {
for (var i = 0; i < 100; i++) {
myModel.append({
name: "Big Animal : " + i
})
}
}
}