I have list of items in QML 2.0 and I want to display item's context menu (red box in the picture) only when mouse is inside black mouseArea. Context menu contains a few buttons, each of them has own museArea. In QtQuick 1.0 it works as expected, but in 2.0 not. When I move the cursor between small red boxed (context menu's items), black MouseArea::onExited is called (and context menu isn't shown). It looks like small red mouseareas covered the larger, black mousearea. If I set:
z: 10
in black mouseArea, onExited isn't called when cursor is above small red boxes, but I can't use small mouseares hovering effects. What should I do to have an access to small red boxes' mouseareas and simultanously not calling black mouseArea::onExited when cursor is above red box?
Instead of relying on the mouseArea onExited and onEntered events, you could enable hovering and check the containsMouse property. Here's a working example (QtQuick 2.0):
Column
{
spacing: 10
Repeater
{
model:4
Rectangle
{
height: 100
width: parent.width
border.color: "black"
MouseArea
{
id: mouseArea
anchors.fill: parent
hoverEnabled: true
}
Rectangle
{
visible: mouseArea.containsMouse
anchors.right: parent.right
anchors.top: parent.top
anchors.bottom: parent.bottom
anchors.margins: 20
width: 200
border.color: "red"
Rectangle
{
anchors.centerIn: parent
color: "purple"
width: 20
height: 20
MouseArea
{
anchors.fill: parent
onClicked: print("clicked")
}
}
}
}
}
}
If a MouseArea overlaps with the area of other MouseArea items,
you can choose to propagate clicked, doubleClicked and
pressAndHold events to these other items by setting
propagateComposedEvents to true and rejecting events that should
be propagated. See the propagateComposedEvents documentation for
details.
Source
Related
I have a vertical ListView with a lot elements. When an element gets clicked a Rectangle pops up under it as highlight.
This doesnt work for the last elements in the ListView, as can be seen in the image.
How do I setup ListView, that a highlight pushes all elements up.
What I have:
What I want:
I could solve my issue by expanding the selected delegates height for the while it is selected. Furthermore you have to set the hightlight's y explicitly.
ListView{ id:listView
property var someHeight: 100
delegate:Item{
id: delegate
Connections{
target: listView
function onCurrentIndexChanged(){
if(index==listView.currentIndex)
delegate.height=someHeight+listView.highlightItem.childrenRect.height
else
delegate.height=someHeight
}
}
}
}
highlight:Item{
z:10
Rectangle{
id:highlightRect
anchors.left:parent.left
anchors.leftMargin: smallMargin
anchors.right: parent.right
anchors.rightMargin: smallMargin
y: someHeight;
height:someHighlightHeight
}
}
}
I have made a delegate for listview that contains Combobox. If I open the Combobox and scroll the listview, the Combobox popup is moving with the delegate position, that's ok. But when the delegate goes out of the listview area(Ref the sample image attached), Combobox popup continues to moves even out of the listview area.
How to close the Combobox when the corresponding delegate goes out of the listview area.
Thanks in advance...
Code goes here
import QtQuick 2.9
import QtQuick.Window 2.2
import QtQuick.Controls 2.2
Window {
visible: true
width: 640
height: 480
title: qsTr("Hello World")
Column {
spacing: 0
anchors.fill: parent
Item {
width: parent.width
height: parent.height * 0.4
Image {
anchors.fill: parent
anchors.margins: 10
source: "https://lh4.googleusercontent.com/proxy/cITVCAj9KJ5Hfwd5iuNDhzdB2pSrMQv2rzTl-vvg23Ifhe2qdCisZBG-MzV35y_r2zijC9X4QOpda9eHzr_hA"
}
}
ListView {
width: parent.width
height: parent.height * 0.7
model: 10
spacing: 5
clip: true
delegate: Rectangle {
width: parent.width
height: 50
color: index % 2 == 0 ? "lightsteelblue" : "steelblue"
Row {
spacing: 25
anchors.centerIn: parent
Label {
text: qsTr("%1").arg(index)
anchors.verticalCenter: parent.verticalCenter
}
ComboBox {
anchors.verticalCenter: parent.verticalCenter
model: ["a", "b", "c"]
}
}
}
}
}
}
If there is no particular goal to keep ComboBox popup opened when scrolling, then add the following property to your ListView:
highlightRangeMode: ListView.StrictlyEnforceRange
This will close ComboBox popup when ListView is being scrolled.
P.S.
Also, resolves your issue with the ComboBox list getting out of view area.
UPDATE on issue with header element hiding below other list items:
Accordingly to the description ListView.StrictlyEnforceRange - the highlight never moves outside of the range. The current item changes if a keyboard or mouse action would cause the highlight to move outside of the range. when an item goes out of range the list changes next item and that makes ComboBox closing its popup, but since header item is below the other ListView items itself (see this paragraph https://doc.qt.io/qt-5/qml-qtquick-listview.html#stacking-order-in-listview , delegate is always above a header) it makes impossible displaying default header here at the top of the other items. I'd suggest you implement your own header beyond the list. Sorry, I might not have known Qt so good to find the other solution.
I have code like this:
import QtQuick 2.0
import QtQuick.Window 2.0
Window {
visible: true
width: 500
height: 500
GridView {
id: grid
anchors.fill: parent
cellWidth: 30
cellHeight: 30
model: 120
delegate: Rectangle {
width: grid.cellWidth
height: grid.cellHeight
color: "grey"
}
MouseArea {
anchors.fill: parent
onPressed: console.info(">> PRESSED triggered")
onMouseXChanged: console.info(">> " + mouseX)
onReleased: console.info(">> RELEASED triggered")
preventStealing: true
propagateComposedEvents: true
}
}
}
When I hold mouse button down and move it strictly along X axis, all the signals in MouseArea trigger. But when the mouse is also moved up or down, along Y axis, the onMouseXChanged and onReleased signals do not trigger. It seems that GridView intercepts MouseArea's signals, stealing them from the MouseArea. How can I make them work together: GridView with MouseArea inside?
Set preventStealing to true in your MouseArea.
This property holds whether the mouse events may be stolen from this MouseArea.
If a MouseArea is placed within an item that filters child mouse events, such as Flickable, the mouse events may be stolen from the MouseArea if a gesture is recognized by the parent item, e.g. a flick gesture. If preventStealing is set to true, no item will steal the mouse events.
import QtQuick 2.4
import QtQuick.Window 2.2
Window
{
visible: true
height: 500
width: 500
property VisualItemModel contentToBeShownOnTabClick : visualItemModelDemo
property variant tabLabels : ["Navigation", "Payload", "System Control"]
VisualItemModel
{
id: visualItemModelDemo
Rectangle
{
id: navigationTab
color: "green"
height: 200
width: 200
}
Rectangle
{
id: navigationTab1
color: "darkgreen"
height: 200
width: 200
}
Rectangle
{
id: navigationTab2
color: "lightgreen"
height: 200
width: 200
}
}
MainForm
{
Component
{
id: tabsOnBottomComponent
Repeater
{
model: tabLabels
// The Tabs
Rectangle
{
id: tabsOnBottom
// This anchoring places the tabs on the outer top of the parent rectangle.
anchors.top: parent.bottom
anchors.topMargin: 180
color: "lightsteelblue"
border.color: "steelblue"
border.width: 2
implicitWidth: Math.max ((labelTabsBottom.width + 4), 80)
implicitHeight: 20
radius: 2
// Tabs Text/Label
Text
{
id: labelTabsBottom
anchors.centerIn: parent
color: "white"
rotation: 0
// With reference to mode: tabLabels
text: modelData
font.pointSize: 11
}
MouseArea
{
anchors.fill: parent
onClicked: bottomTabClicked (index);
}
}
}
}
Rectangle
{
// The things which get displayed on clicking of a tab will be shown in this rectangle.
id: areaForTabContents
border.color: "black"
border.width: 10
height: parent.height
width : parent.width
color : "pink"
// These are the tabs displayed in one row - horizontally.
Row
{
id: horizontalTabs
Loader
{
anchors.fill: parent
sourceComponent: tabsOnBottomComponent
}
}
}
anchors.fill: parent
}
}
This gets shown as follows:
whereas I want it to see 3 rectangles there side by side.
Loader is not a transparent type w.r.t. the containing type, Row in this case. I think this is an issue related to creation context and the way Repeater works. From the documentation of the latter:
Items instantiated by the Repeater are inserted, in order, as children of the Repeater's parent. The insertion starts immediately after the Repeater's position in its parent stacking list. This allows a Repeater to be used inside a layout.
The Rectangles are indeed added to the parent which is the Loader, they stack up - Loader does not provide a positioning policy - then they are added to the Row resulting in just one Item (the last one) to be visible.
You can tackle the problem with few different approaches, depending on the properties you want to maintain or not. I would get rid of anchoring in the Component and move it to the containing Row. A too specific anchoring inside a Component could be a pain in the neck when it is instanced and used all over a (not so small) project.
As a first approach you can re-parent the Repeater to the Row, i.e. you can rewrite code as:
Row
{
id: horizontalTabs
Loader
{
sourceComponent: tabsOnBottomComponent
onLoaded: item.parent = horizontalTabs
}
}
However this would result in warnings due to the Component anchoring references not working as expected any more.
If you still want to maintain the anchoring, as defined in the Component, and off-load the creation, you can go for the dynamic way (if the semantics fits in your use case), i.e. you can use createObject. This way you totally avoid the Loader and the related issue. For instance, you can create the Repeater once the Row has completed its creation:
Row
{
id: horizontalTabs
Component.onCompleted: tabsOnBottomComponent.createObject(horizontalTabs)
}
Clearly, the creation code can be move anywhere else, depending on your needs.
a pretty simple scenario, actually:
Text {
text: "Hover me!"
font.family: "Arial"
font.pointSize: 16
MouseArea {
anchors.fill: parent
hoverEnabled: true
onEntered: {
parent.color = "#ffffff"
}
onExited: {
parent.color = "#000000"
}
}
}
As you can see, all i want is that the text color changes when i hover it. However, it works only when i'm holding down my left mouse button. Since i'm pretty new to Qt, i've no idea where the problem could be. I googled all day to find an answer, but everything leads me to the "set hoverEnabled: true" solution, which i'm already using.
I'm working on windows with Qt 2.4.1 including VPlay (doesn't think that VPlay matters here)
From your snippet, it looks like you're not assigning the Text element a size (either explicitly or via anchoring), so it has a width/height of (0,0), which means it will never contain the mouse cursor. Note that in QtQuick, the size of items is not defined by their contents or where they paint (an item can paint anywhere outside of its (position, size) rectangle). An item without explicit width/height attributes or anchoring will have a size of (0,0), no matter how it appears on screen.
In the following example, the mouse area has a size of 360, 360 inherited from its parent rectangle (via anchors.fill: parent):
import QtQuick 2.0
Rectangle {
width: 360
height: 360
color: "black"
Text {
anchors.centerIn: parent
text: qsTr("Hello World")
color: mouseArea.containsMouse ? "red" : "white"
}
MouseArea {
id: mouseArea
anchors.fill: parent
hoverEnabled: true
}
}
}
I preferred the declarative approach using a property binding with containsMouse here, but onEntered/onExited would work as well.