In my ui.qml I have:
RowLayout {
id: rowLayout2
x: 0
y: 397
width: 640
height: 50
clip: false
Text {
id: text4
width: 105
height: 32
text: qsTr("房间类型")
font.pixelSize: 17
wrapMode: Text.WordWrap
}
ComboBox {
id: comboBox1
activeFocusOnPress: false
model: ListModel {
id: cbItems
ListElement { text: "标准间"; color: "Yellow" }
ListElement { text: "三人间"; color: "Green" }
ListElement { text: "大床房"; color: "Brown" }
ListElement { text: "豪华套房"; color: "Blue" }
}
}
}
And I want to make a button that when clicked on duplicates this RowLayout below the original one, how do I do that?
Put it inside a Repeater and increment the model count when the button is clicked.
Button {
onClicked: {
repeater.model += 1;
}
}
...
Column {
Repeater {
model: 1
// Your rowLayout2 code
}
}
Related
I've been trying to populate a ListView in QML with data from a list I have, but in the documentation it doesn't show how to dynamically populate a ListModel or ListView. The data in the list keeps changing and I intend to update the list in real time and that is why I don't have to have a hard-coded model.
Based on tutorials, this works:
Rectangle {
anchors.horizontalCenter: parent.horizontalCenter
color: "black"
height: 500
width: 0.95 * parent.width
ListView {
anchors.fill: parent
model: fruitModel
delegate: fruitDelegate
}
}
ListModel {
id: fruitModel
ListElement {
name: "Apple"
cost: 2.45
}
ListElement {
name: "Orange"
cost: 3.25
}
ListElement {
name: "Banana"
cost: 1.95
}
}
Component {
id: fruitDelegate
Row {
spacing: 10
Text { text: name; color: "white" }
Text { text: '$' + cost; color: "white" }
}
}
But this doesn't:
userModel : ["Tony", "Stark"] //list containing names of users
Rectangle {
anchors.horizontalCenter: parent.horizontalCenter
color: "black"
height: 500
width: 0.95 * parent.width
ListView {
anchors.fill: parent
model: userModel // a list containing all users
delegate: fruitDelegate
}
}
Component {
id: fruitDelegate
Row {
spacing: 10
Text { text: name; color: "white" }
}
}
The roles define how to access the information, for example fruitModel has 2 roles: name and cost. But when using a list as a model then you have to use modelData as a role to access the information:
Component {
id: fruitDelegate
Row {
spacing: 10
Text { text: modelData; color: "white" }
}
}
The ListModel can be updated through the append function:
Rectangle {
anchors.horizontalCenter: parent.horizontalCenter
color: "black"
height: 500
width: 0.95 * parent.width
ListView {
anchors.fill: parent
model: fruitModel
delegate: fruitDelegate
}
}
ListModel {
id: fruitModel
Component.onCompleted: {
fruitModel.append({"name": "Tony"})
fruitModel.append({"name": "Stark"})
}
}
Component {
id: fruitDelegate
Row {
spacing: 10
Text { text: name; color: "white" }
}
}
I am working on qml, found found an error during moving mouse wheel scrolling i.e.
"TypeError: Cannot read property 'name' of undefined".
It only appear when either mouse wheel scrolling or close the application while during execution and beginning of the application didn't show this error.
One more thing, I am getting accurate data/result whatever I want but due to this error the performance of application get affected.
Please let me know how can I get rid of this issue?
also find below example to see error.
My code is..
import QtQuick 2.4
import QtQuick.Controls 1.3
import QtQuick.Layouts 1.1
ApplicationWindow {
visible: true
width: 640
height: 480
title: qsTr("Hello World")
menuBar: MenuBar {
Menu {
title: qsTr("File")
MenuItem {
text: qsTr("Exit")
onTriggered: Qt.quit();
}
}
}
TableView {
anchors.fill: parent
visible: true
backgroundVisible: false
alternatingRowColors: false
sortIndicatorVisible: true
clip: true
highlightOnFocus: false
width: parent.width
height: parent.height
TableViewColumn{ role: "code" ; title: "cde" ; width: 200;
delegate: Component {
id: codeDelegate
Item{
Text {
color: "lightgray"
elide: styleData.elideMode
text: styleData.value //modelSettingData.get(styleData.row).name
font.family: "Arial"
font.pixelSize: 18
wrapMode: Text.WrapAtWordBoundaryOrAnywhere
Text {
id: metaData
color: "red"
width: parent.width
// height: 20
anchors.bottom: parent.bottom
anchors.bottomMargin: -parent.height/1.5
font.weight: Font.ExtraLight
//elide: Text.ElideMiddle
text: "Time: " + modelSettingData.get(styleData.row).name //Error comes when this part added but I need to use it with the same form
}
}
}
}
}
TableViewColumn{ role: "name" ; title: "nme" ; width: 200
delegate: Component {
id: nameDelegate
Text {
color: "yellow"
elide: styleData.elideMode
text: styleData.value
font.family: "Arial"
font.pixelSize: 18
}
}
}
model: ListModel {
id: modelSettingData
ListElement {
name: "aaaaaaaaaa"
code: "3042666666666"
}
ListElement {
name: "bbbbbb"
code: "32235"
}
ListElement {
name: "ccccccc"
code: "32638"
}
ListElement {
name: "ddddddddddd"
code: "00000000000"
}
ListElement {
name: "eeeeeeeeeeee"
code: "111111111111"
}
ListElement {
name: "ffffffffffff"
code: "222222222222"
}
ListElement {
name: "ggggggggggggg"
code: "3333333333333"
}
ListElement {
name: "hhhhhhhhhhhhh"
code: "4444444444444"
}
ListElement {
name: "iiiiiiiiiiiii"
code: "5555555555555"
}
}
rowDelegate: Rectangle {
property bool selected : styleData.selected
width: parent.width-2
height: 100
color: styleData.selected? "black" : "black"
Rectangle {
width: parent.width
height: 1
anchors.bottom: parent.bottom
visible: parent.selected
color: "yellow"
}
}
}
}
I have more horizontal listview. For example let's take two of them. Items of each list are not the same length, when one list is scrolling - the other one does, too. I've solved that with contentX property. But, when I want to navigate between each other (when I press key "down" I need to force focus second listview). The problem is that focus is on horizontalna2.currentIndex that is remembered, and I want to go on first visible item in listview.
In android is that very simple, but to solve that here, huh..
Here is sketch of the code:
Rectangle {
width: 500
height: 200
ListModel {
id: model1
ListElement { itemwidth: 100 }
ListElement { itemwidth: 200 }
ListElement { itemwidth: 50 }
ListElement { itemwidth: 70 }
ListElement { itemwidth: 90 }
ListElement { itemwidth: 90 }
ListElement { itemwidth: 90 }
ListElement { itemwidth: 90 }
ListElement { itemwidth: 90 }
ListElement { itemwidth: 90 }
}
ListModel {
id: model2
ListElement { itemwidth: 300 }
ListElement { itemwidth: 50 }
ListElement { itemwidth: 70 }
ListElement { itemwidth: 100 }
ListElement { itemwidth: 90 }
ListElement { itemwidth: 30 }
ListElement { itemwidth: 90 }
ListElement { itemwidth: 90 }
ListElement { itemwidth: 90 }
ListElement { itemwidth: 90 }
}
ListView {
clip: true
id: horizontalna
boundsBehavior: Flickable.StopAtBounds
width: 500
height: 60;
focus: true
model: model1
orientation: ListView.Horizontal
KeyNavigation.down: horizontalna2
onContentXChanged: {
if (horizontalna.activeFocus === true)
{
horizontalna2.contentX = horizontalna.contentX
}
}
delegate: Item {
id: containerHorizontal
width: itemwidth; height: 60;
Rectangle {
id: contentHorizontal
anchors.centerIn: parent; width: containerHorizontal.width; height: containerHorizontal.height - 10
color: "transparent"
antialiasing: true
Rectangle { id: insideConHorizontal; anchors.fill: parent; anchors.margins: 3; color: "grey"; antialiasing: true; radius: 5
Text {
id: labelHorizontal
text: "name"
color: "white"
}
}
}
states: State {
name: "active"; when: containerHorizontal.activeFocus
PropertyChanges { target: contentHorizontal; color: "#FFFF00"; scale: 1}
PropertyChanges { target: insideConHorizontal; color: "#F98F06" }
PropertyChanges { target: labelHorizontal; color: "#0E2687"}
}
}
}
ListView {
id: horizontalna2
anchors.top: horizontalna.bottom
boundsBehavior: Flickable.StopAtBounds
width: 500
height: 60;
focus: true
model: model2
orientation: ListView.Horizontal
onContentXChanged: {
if (horizontalna2.activeFocus === true)
{
horizontalna.contentX = horizontalna2.contentX
}
}
delegate: Item {
id: containerHorizontal2
width: itemwidth; height: 60;
Rectangle {
id: contentHorizontal2
anchors.centerIn: parent; width: containerHorizontal2.width; height: containerHorizontal2.height - 10
color: "transparent"
antialiasing: true
Rectangle { id: insideConHorizontal2; anchors.fill: parent; anchors.margins: 3; color: "grey"; antialiasing: true; radius: 5
Text {
id:labelHorizontal2
color: "white"
text: "name"
}
}
}
states: State {
name: "active"; when: containerHorizontal2.activeFocus
PropertyChanges { target: contentHorizontal2; color: "#FFFF00"; scale: 1}
PropertyChanges { target: insideConHorizontal2; color: "#F98F06" }
PropertyChanges { target: labelHorizontal2; color: "#0E2687"}
}
}
}
}
EDIT[SOLVED] :
Get index of first visible item of second list depending on contentX --> function indexAt()
onCurrentIndexChanged: {
if (horizontalna.activeFocus === true)
{
horizontalna2.currentIndex = horizontalna2.indexAt((horizontalna2.contentX),0)
}
}
Get index of first visible item of second list depending on contentX --> function indexAt()
onCurrentIndexChanged: {
if (horizontalna.activeFocus === true)
{
horizontalna2.currentIndex = horizontalna2.indexAt((horizontalna2.contentX),0)
}
}
I need to create nested list view and as shown below, and highlight the main list and sub-list with different color
I have tried with ListView highlight but there are issue like the highlight showing for child as well as parent as shown
below image.
I am using the code from here with some minor modification.
Here is the full code
import QtQuick 2.2
import QtQuick.Controls 1.1
import QtQuick 2.2
import QtQuick.Controls 1.2
import QtQuick.Controls.Styles 1.1
ApplicationWindow {
id: loginWindow
//visibility: "Maximized"
visible: true
width: 720
height: 720
Item {
width: 200
height: 720
ListView {
id: list
anchors.fill: parent
model: nestedModel
delegate: categoryDelegate
highlight: Rectangle {
color: "#FF00AAFF" //"#FF59ACFF";
radius: 2
}
}
ListModel {
id: nestedModel
ListElement {
categoryName: "Veggies"
collapsed: true
// A ListElement can't contain child elements, but it can contain
// a list of elements. A list of ListElements can be used as a model
// just like any other model type.
subItems: [
ListElement {
itemName: "Tomato"
},
ListElement {
itemName: "Cucumber"
},
ListElement {
itemName: "Onion"
},
ListElement {
itemName: "Brains"
}
]
}
ListElement {
categoryName: "Fruits"
collapsed: true
subItems: [
ListElement {
itemName: "Orange"
},
ListElement {
itemName: "Apple"
},
ListElement {
itemName: "Pear"
},
ListElement {
itemName: "Lemon"
}
]
}
ListElement {
categoryName: "Cars"
collapsed: true
subItems: [
ListElement {
itemName: "Nissan"
},
ListElement {
itemName: "Toyota"
},
ListElement {
itemName: "Chevy"
},
ListElement {
itemName: "Audi"
}
]
}
}
Component {
id: categoryDelegate
Column {
width: 200
Rectangle {
id: categoryItem
border.color: "black"
border.width: 5
color: "#33FF5225"
height: 50
width: 200
Text {
anchors.verticalCenter: parent.verticalCenter
x: 15
font.pixelSize: 24
text: categoryName
}
Rectangle {
color: "red"
width: 30
height: 30
anchors.right: parent.right
anchors.rightMargin: 15
anchors.verticalCenter: parent.verticalCenter
MouseArea {
anchors.fill: parent
// Toggle the 'collapsed' property
onClicked: {
list.currentIndex = index
nestedModel.setProperty(index, "collapsed",
!collapsed)
}
}
}
}
Loader {
id: subItemLoader
// This is a workaround for a bug/feature in the Loader element. If sourceComponent is set to null
// the Loader element retains the same height it had when sourceComponent was set. Setting visible
// to false makes the parent Column treat it as if it's height was 0.
visible: !collapsed
property variant subItemModel: subItems
sourceComponent: collapsed ? null : subItemColumnDelegate
onStatusChanged: if (status == Loader.Ready) item.model = subItemModel
}
}
}
Component {
id: subItemColumnDelegate
Column {
property alias model: subItemRepeater.model
width: 200
Repeater {
id: subItemRepeater
delegate: Rectangle {
x: 10
color: "#33FF5225"
height: 40
width: 190
border.color: "black"
border.width: 2
Text {
anchors.verticalCenter: parent.verticalCenter
x: 30
font.pixelSize: 18
text: itemName
}
}
}
}
}
}
}
How can I overcome this issue. Basically I need to highlight Parent and child Item with different color.
Edit:
I can highlight parent list using the code
color:categoryDelegate.ListView.isCurrentItem ? "#FF00AAFF" : "#CCBBBBBB"
but coud'nt a find similar way to change the color of child list (sub list) on click.
Change the color property of the delegate in subItemRepeater to your choice.
Example
Component {
id: subItemColumnDelegate
Column {
...
Repeater {
id: subItemRepeater
delegate: Rectangle {
...
color: "purple"
...
}
}
}
}
Similarly change the color property categoryItem in the categoryDelegate.
Example
Component {
id: categoryDelegate
Column {
...
Rectangle {
id: categoryItem
...
color: "blue"
...
}
}
}
EDIT:
In that case the the overall concept is wrong. In the comment of the original code the author has written A ListElement can't contain child elements, but it can contain a list of elements. So we can't highlight the child item. But the following approach will give good result to you.
import QtQuick 2.0
Rectangle {
width: 360
height: 360
ListModel {
id: model1
ListElement {
name: "name"
}
ListElement {
name: "name"
}
ListElement {
name: "name"
}
}
ListModel {
id: model2
ListElement {
name: "inside"
}
ListElement {
name: "inside"
}
ListElement {
name: "inside"
}
}
ListView {
id: outer
model: model1
delegate: listdelegate
anchors.fill: parent
}
Component {
id: listdelegate
Item {
width: 100
height: col.childrenRect.height
Column {
id: col
anchors.left: parent.left
anchors.right: parent.right
Text {
id: t1
text: name
}
ListView {
id: insidelist
model: model2
property int collapseHeightFlag: childrenRect.height
delegate: Component {
id: delegate2
Item {
width: 100
height: col2.childrenRect.height
Column {
id: col2
anchors.left: parent.left
anchors.right: parent.right
Text {
id: name1
text: name
}
}
MouseArea {
anchors.fill: parent
onClicked: {
insidelist.currentIndex = index;
}
}
}
}
contentHeight: contentItem.childrenRect.height
height: 0
anchors.left: parent.left
anchors.right: parent.right
clip: true
highlight: Rectangle {
color: "pink"
radius: 2
}
focus: true
}
}
Rectangle {
color: "red"
width: 10
height: 10
anchors.right: parent.right
anchors.rightMargin: 5
anchors.top: parent.top
anchors.topMargin: 5
MouseArea {
anchors.fill: parent
onClicked: {
if(insidelist.height === insidelist.collapseHeightFlag) {
insidelist.height = 0;
}
else
insidelist.height = insidelist.collapseHeightFlag;
}
}
}
}
}
}
I'm trying to develop an application which has multi-layered navigation in drop-downs.
Below is the snapshot of the requirement. On clicking QSR only the subitems of QSR should pop out with proper alignment.
But with my implementation, I'm getting following result. The pop out window is not aligned, but extending itself to the list.
Below is the my code snippet
import QtQuick 1.1
Item {
width: 500
height: 300
ListView {
anchors.fill: parent
model: nestedModel
delegate: categoryDelegate
}
ListModel {
id: nestedModel
ListElement {
categoryName: "QSR"
collapsed: true
subItems: [
ListElement { itemName: "KFC" },
ListElement { itemName: "Mc Donalds" },
ListElement { itemName: "Pizza Hut" },
ListElement { itemName: "Brain's" }
]
}
ListElement {
categoryName: "Drinks"
collapsed: true
subItems: [
ListElement { itemName: "Pepsi" },
ListElement { itemName: "Coke" },
ListElement { itemName: "7up" },
ListElement { itemName: "Bacardi" }
]
}
}
Component {
id: categoryDelegate
Column {
width: 200
Rectangle {
id: categoryItem
border.color: "black"
border.width: 5
color: "white"
height: 50
width: 200
anchors.left: parent.right
Text {
anchors.right: parent.right
x: 15
font.pixelSize: 24
text: categoryName
}
MouseArea {
anchors.fill: parent
onClicked: nestedModel.setProperty(index, "collapsed", !collapsed)
}
}
Loader {
id: subItemLoader
visible: !collapsed
property variant subItemModel : subItems
sourceComponent: collapsed ? null : subItemColumnDelegate
onStatusChanged: if (status == Loader.Ready) item.model = subItemModel
}
}
}
Component {
id: subItemColumnDelegate
Column {
property alias model : subItemRepeater.model
width: 200
Repeater {
id: subItemRepeater
delegate: Rectangle {
color: "#cccccc"
height: 40
width: 200
border.color: "black"
border.width: 2
Text {
anchors.verticalCenter: parent.verticalCenter
x: 30
font.pixelSize: 18
text: itemName
}
}
}
}
}
}
Any help to achieve original requirement will be appreciable.
Have a close look at the delegate for your main list view: It's Column (put items on top of each over) of the main menu item and Loader for the popup menu. Obviously as soon as you load a popup menu it's displayed under its corresponding menu item in the list.
To get the behavior you intended you have to move the Loader for the popup menu out of the ListView:
import QtQuick 1.1
Item {
width: 400
height: 300
Row {
anchors.fill: parent
Loader {
id: subItemLoader
width: 200
height: parent.height
property variant subItemModel: null
sourceComponent: subItemModel == null? null: subItemColumnDelegate
function setModel() {
if (status == Loader.Ready) item.model = subItemModel
}
onStatusChanged: setModel()
onSubItemModelChanged: setModel()
}
ListView {
width: 200
height: parent.height
model: nestedModel
delegate: categoryDelegate
}
}
ListModel {
id: nestedModel
ListElement {
categoryName: "QSR"
subItems: [
ListElement { itemName: "KFC" },
ListElement { itemName: "Mc Donalds" },
ListElement { itemName: "Pizza Hut" },
ListElement { itemName: "Brain's" }
]
}
ListElement {
categoryName: "Drinks"
subItems: [
ListElement { itemName: "Pepsi" },
ListElement { itemName: "Coke" },
ListElement { itemName: "7up" },
ListElement { itemName: "Bacardi" }
]
}
}
Component {
id: categoryDelegate
Rectangle {
id: categoryItem
border.color: "black"
border.width: 5
color: "white"
height: 50
width: 200
Text {
anchors.centerIn: parent
x: 15
font.pixelSize: 24
text: categoryName
}
MouseArea {
anchors.fill: parent
onClicked: {
if (subItemLoader.subItemModel != subItems)
subItemLoader.subItemModel = subItems
else
subItemLoader.subItemModel = null
}
}
}
}
Component {
id: subItemColumnDelegate
Column {
property alias model : subItemRepeater.model
width: 200
height: 500
Repeater {
id: subItemRepeater
delegate: Rectangle {
color: "#cccccc"
height: 40
width: 200
border.color: "black"
border.width: 2
Text {
anchors.verticalCenter: parent.verticalCenter
x: 30
font.pixelSize: 18
text: itemName
}
}
}
}
}
}