简单的事情,但无法找到它.我想要一个带有几个选项的简单下拉选择框.就像
HTML一样
<select> <option>1</option> <option>2</option> </select>
QML的代码是什么？
解决方法
这是一个简单的例子,可以作为一个起点：
import QtQuick 1.0
Rectangle {
width:400;
height: 400;
Rectangle {
id:comboBox
property variant items: ["Item 1","Item 2","Item 3"]
property alias selectedItem: chosenItemText.text;
property alias selectedIndex: listView.currentIndex;
signal comboClicked;
width: 100;
height: 30;
z: 100;
smooth:true;
Rectangle {
id:chosenItem
radius:4;
width:parent.width;
height:comboBox.height;
color: "lightsteelblue"
smooth:true;
Text {
anchors.top: parent.top;
anchors.left: parent.left;
anchors.margins: 8;
id:chosenItemText
text:comboBox.items[0];
font.family: "Arial"
font.pointSize: 14;
smooth:true
}
MouseArea {
anchors.fill: parent;
onClicked: {
comboBox.state = comboBox.state==="dropDown"?"":"dropDown"
}
}
}
Rectangle {
id:dropDown
width:comboBox.width;
height:0;
clip:true;
radius:4;
anchors.top: chosenItem.bottom;
anchors.margins: 2;
color: "lightgray"
ListView {
id:listView
height:500;
model: comboBox.items
currentIndex: 0
delegate: Item{
width:comboBox.width;
height: comboBox.height;
Text {
text: modelData
anchors.top: parent.top;
anchors.left: parent.left;
anchors.margins: 5;
}
MouseArea {
anchors.fill: parent;
onClicked: {
comboBox.state = ""
var prevSelection = chosenItemText.text
chosenItemText.text = modelData
if(chosenItemText.text != prevSelection){
comboBox.comboClicked();
}
listView.currentIndex = index;
}
}
}
}
}
Component {
id: highlight
Rectangle {
width:comboBox.width;
height:comboBox.height;
color: "red";
radius: 4
}
}
states: State {
name: "dropDown";
PropertyChanges { target: dropDown; height:40*comboBox.items.length }
}
transitions: Transition {
NumberAnimation { target: dropDown; properties: "height"; easing.type: Easing.OutExpo; duration: 1000 }
}
}
}
