我刚开始使用QML进行编程,我需要制作带有一些图像的简单Carousel。我发现最简单的方法是使用PathView。据我说,我试图让我当前的项目在视图的中心,失败。这是我所做的代码。
Rectangle {
id: rectangle
height: 200
color: "#00000000"
Layout.alignment: Qt.AlignHCenter | Qt.AlignVCenter
Layout.fillWidth: true
PathView {
id: carouselView
anchors.fill: parent
model: listModel
delegate: Image {
width: PathView.isCurrentItem ? 256 : 128
height: PathView.isCurrentItem ? 256 : 128
source: iconSource
}
path: Path {
startX: 0
PathLine {
x: 800
y: 0
}
}
Layout.alignment: Qt.AlignHCenter | Qt.AlignVCenter
}
}
ListModel {
id: listModel
ListElement {
iconSource: "qrc:///images/chair.svg"
}
ListElement {
iconSource: "qrc:///images/chair.svg"
}
ListElement {
iconSource: "qrc:///images/chair.svg"
}
ListElement {
iconSource: "qrc:///images/chair.svg"
}
}
期望的效果是具有居中的当前项目的简单水平旋转木马。 使用的当前版本:5.6
答案 0 :(得分:3)
这是一个使用PathView的简单轮播示例:
import QtQuick 2.9
import QtQuick.Controls 2.2
ApplicationWindow {
visible: true
width: 640
height: 640
Component {
id: delegate
Item {
width: 200; height: 200
scale: PathView.iconScale
opacity: PathView.iconOpacity
z: PathView.iconOrder
Image { anchors.fill: parent; source: modelData }
}
}
PathView {
id: view
anchors.fill: parent
anchors.bottomMargin: 150
anchors.topMargin: 50
pathItemCount: 7
preferredHighlightBegin: 0.5 //
preferredHighlightEnd: 0.5 // That should center the current item
highlightRangeMode: PathView.StrictlyEnforceRange //
model:
[
"http://placeimg.com/200/200/any?rand=" + Math.random(),
"http://placeimg.com/200/200/any?rand=" + Math.random(),
"http://placeimg.com/200/200/any?rand=" + Math.random(),
"http://placeimg.com/200/200/any?rand=" + Math.random(),
"http://placeimg.com/200/200/any?rand=" + Math.random(),
"http://placeimg.com/200/200/any?rand=" + Math.random(),
"http://placeimg.com/200/200/any?rand=" + Math.random(),
"http://placeimg.com/200/200/any?rand=" + Math.random(),
]
delegate: delegate
path: Path {
startX: 0; startY: view.height/2
PathAttribute { name: "iconScale"; value: 0.2 }
PathAttribute { name: "iconOpacity"; value: 10.2 }
PathAttribute { name: "iconOrder"; value: 0 }
PathLine {x: view.width / 2; y: view.height/2 }
PathAttribute { name: "iconScale"; value: 1.2 }
PathAttribute { name: "iconOpacity"; value: 1 }
PathAttribute { name: "iconOrder"; value: 8 }
PathLine {x: view.width; y: view.height/2 }
}
}
}
当然,如果你真的想把当前项目放在视图的中心,你只需要改变路径,即将起点移动到中心等。