Is there anyway to change the replaceEnter/Exit Transition animation dynamically depending on the next QML file to be loaded in the stack view.
Situation:
I have a Centre QML file having 4 buttons on the 4 sides of the screen. There are other 4 QML files namely Top, Bottm, Right and Left. On press of top button on the Centre QML the Top qml file should transitioned from top-to-bottom and replace the centre one. Similarly on press of left button on the centre QML the left QML should enter there display area from left to right and replace the centre one.
I tried using replaceEnter/Exit property. But not able to understand how to change it dynamically depending on the next QML to be displayed.
take a look at the doc for infos about customizing transitions for Stackview.
If you need more than one transition you can define them separately and then assign them just before they are used. Here is an example:
StackView {
id: control
pushEnter: topTransition
Transition {
id: topTransition
XAnimator {
from: (control.mirrored ? -1 : 1) * -control.width
to: 0
duration: 400
easing.type: Easing.OutCubic
}
}
Transition {
id: bottomTransition
XAnimator {
from: 0
to: (control.mirrored ? -1 : 1) * control.width
duration: 400
easing.type: Easing.OutCubic
}
}
Button {
text: "Push page from bottom"
onClicked: {
control.pushEnter = bottomTransition
control.push(bottomPage)
}
}
}
You will have to explicitly set all push/pop/replace transitions you need before each button click.
Related
I'm struggling with a very basic question..
Using QT 5.15.2:
We have a simple application with one main window and 2-3 sub-window (1 level down from main). The main window consists of a content item, a header and some menu-flaps distributed across the main window. So Far the sub-pages were opened with a drawer element.
However, the drawer overlays the flaps and header once opened and we need to re-instanciate the flaps and header within the drawer to have it visible. This is not really nice. Is there any way to define the z-level on which the drawer is opened? (apparently setting z doesn't work).
Item{
id: id_mainWindow
z: 0
Drawer{
id: id_subMenu1
anchors.fill: parent
z: 1
/* Not so nice workaround */
Button{
id: id_subClose
z: 100
onClicked{
id_subMenu1.close()
}
}
}
/* Unfortunately, this one gets hidden once, the drawer is open */
Button{
id: id_subOpenClose
z: 100
onClicked{
if( id_subMenu1.open ){
id_subMenu1.close()
} else {
id_subMenu1.open()
}
}
}
}
I would suggest that a Drawer is not the right component for this job as it is technically a Popup. It might be worth checking out the TabBar component instead.
Nevertheless here's a re-write of your code so that your Drawer opens without covering your id_subOpenClose button.
import QtQuick
import QtQuick.Controls
import QtQuick.Controls.Material
Rectangle {
id: id_mainWindow
anchors.fill: parent
Drawer {
id: id_subMenu1
/*
Set the Drawer's height and y position so that it does not cover your button
*/
y: id_subOpenClose.height
height: id_mainWindow.height - id_subOpenClose.height
width: id_mainWindow.width
// Do not dim background
dim: false
// Set this to zero if you want no shadow
Material.elevation: 2
edge: Qt.RightEdge
Label {
text: 'Hello World'
anchors.centerIn: parent
}
}
/*
This is your header button that was getting hidden
Here it stays as if it were part of a global header and does not get hidden by
the Drawer.
*/
Button{
id: id_subOpenClose
text: id_subMenu1.visible? 'close': 'open'
onClicked: id_subMenu1.visible? id_subMenu1.close(): id_subMenu1.open()
}
}
For an interactive WASM example of the above see here.
I have a very simple browser app based on WebEngineView and virtual keyboard made in Qt Quick.
Everything works fine - the keyboard is shown perfectly each time I click on an input in the webview, but what bothers me is that if I click on an input that is at the bottom, the keyboard covers it after opening and I cannot see what I'm typing.
I tried solving it by resizing the WebEngineView element to accomodate for the keyboard height, like most mobile apps work. It works, I can scroll the page under the keyboard but the keyboard still covers the input and I need to scroll manually.
Is there any way I could adjust the web view scroll position so the keyboard doesn't cover the focused input from QML?
I cannot do it at a single website because I allow navigation to any website user wants, so I need some universal method.
Here is my qml code:
import QtQuick 2.12
import QtQuick.Window 2.12
import FreeVirtualKeyboard 1.0
import QtWebEngine 1.8
Window {
id: appContainer;
visible: true
width: 1280
height: 600
title: qsTr("WebEngineView")
property string pathUrl: "https://www.w3schools.com/html/html_forms.asp"
WebEngineView {
id: webview
width: appContainer.width
url: appContainer.pathUrl
height: appContainer.height
}
/*
Virtual keyboard
*/
InputPanel {
id: inputPanel
z: 99
y: appContainer.height
anchors.left: parent.left
anchors.right: parent.right
states: State {
name: "visible"
when: Qt.inputMethod.visible
PropertyChanges {
target: inputPanel
y: appContainer.height - inputPanel.height
}
}
transitions: Transition {
from: ""
to: "visible"
reversible: true
ParallelAnimation {
NumberAnimation {
properties: "y"
duration: 150
easing.type: Easing.InOutQuad
}
}
onRunningChanged: {
if(!running && inputPanel.state == "visible") {
// finished showing keyboard
webview.height = appContainer.height - inputPanel.height
console.log('Keyboard shown')
} else if(running && inputPanel.state != "visible") {
// begins to hide keyboard
webview.height = appContainer.height
console.log('Keyboard starts to hide');
}
}
}
}
}
So far the resizing part works okay - I do it in onRunningChanged so the webview resizes before the transition starts and after it ends - this prevents ugly empty space showing during transition.
Update
I have achieved the effect I wanted using webview.runJavaScript together with scrollIntoView after showing the keyboard:
webview.runJavaScript("document.activeElement.scrollIntoView({block: 'nearest', inline: 'nearest', behavior: 'smooth'})");
However I'm not sure if this is solution is the best, as I don't like the fact of involving javascript evaluation into the process. I'd like to know if there's any more "native" way of doing this.
Resize WebEngineView, scroll into view
The problem with resizing the WebEngineView is that HTML will see that your device screen suddenly shrunk and may decide to present a vastly different layout, for example move menu from top to side of the screen.
Even if this has not happened, layout has changed. The position on the new "screen" does not correspond to the position on the old one, there is no 1:1 relation, which is why it scrolls to a seemingly random spot in the first place.
We can tell webpage to scroll a focused element into view of new viewport:
If it was already onscreen than nothing happens.
If not, webpage scrolls so that the element fits on the screen if possible. scrollIntoView has parameters to scroll to the top/bottom of the screen as desired
So when onscreen keyboard is opened:
Save original scrollPosition
Resize WebEngineView
Optionally assign scrollPosition to saved value - although it probably won't do you any good
Use runJavaScript to determine activeElement and make it scrollIntoView
Repeat same steps when onscreen keyboard is dismissed.
Do not resize, scroll manually
Another approach would be to not resize the "screen" and just scroll the element into view if it got covered.
This would require Qt to change VisualViewport while leaving LayoutViewport intact (see this and this for more information) but it seems that Qt cannot do that, at least not through QML alone.
That leaves us with having to do it manually: determine position with getBoundingClientRect, calculate how much space does keyboard cover, and if it is not inside our calculated uncovered view area - scrollTo it.
(you will still need runJavaScript to get inside the webpage)
Perhaps this and this SO questions can help
Other options
#Hazelnutek reported some success with document.activeElement.scrollIntoViewIfNeeded()
Please see discussion in comments to this answer below:
I want to display a large amount of content, for example, a grid of multiple images inside a window that is smaller than the content, similar to a geographical map but instead of a map, I want my own components as the "map". For this minimal working example, let's take for the content a grid of images with a total size of 1000x1000 with a window into this content of only 300x300.
I have tried 2 different approaches, but I will only go into detail of the first approach as that is the one that got me closest to my desired result:
I have tried the Flickable component but the content cannot be moved outside the predefined bounds, making the user unable to move the view in order to display all the parts of the content. So the simplest solution that I'm thinking about now is if I could remove these bounds from the Flickable component, but how?
I have also tried the Map component but it requires a "plugin" and I was unable to figure out how to use this component with my own content of an image grid.
The content that I want to show is something this
Grid {
columns: 5
spacing: 2
Repeater {
model: ListModel {
ListElement {
path: 'test1'
}
ListElement {
path: 'test2'
}
// ...
ListElement {
path: 'test25'
}
}
Rectangle {
width: 200
height: 200
Image {
anchors.fill: parent
source: 'file:' + path
}
}
}
}
I tried, putting this inside the Flickable like this
Flickable {
anchors.centerIn: parent
width: 300
height: 300
contentWidth: 1000
contentHeight: 1000
clip: true
// INSERT CUSTOM GRID COMPONENT HERE
}
This results in a 300x300 view inside the content as expected, but once you start to flick through the content to view different parts of it, you are stopped by the bounds preventing you from seeing anything outside these bounds. You can see it while dragging but once you release the view of the content is reset to these bounds.
So how do I remove these bounds? (Or is there a different component more suitable for my application?)
Here is a gif that shows how the content can be dragged passed the bounds, but once released it will only go up to the bounds and not further
I found the issue, I set the contentWidth and contentHeight of the Flickable incorrectly, this example works fine. The contentWidth and contentHeight determine the bounds in which you can flick.
I have a window with a QML image in it that needs to flash, so I use a Timer and toggle the visible flag every 500ms. The image has its size, max size, min size and preferred size set to 24. However, the widget next to it in the RowLayout moves backwards and forwards when the visibility changes. How can I make the icon flash without invalidating the layout?
Set opacity: 0 instead of visible: false.
Or, alternatively, do something like this:
RowLayout {
// ...
Item {
width: 24
height: 24
Image {
anchors.fill: parent
// ...
}
}
... and just toggle the visible property of the Image, like you've been doing.
In QML, I want to create a text moving when the mouse in on it. When the mouse is not on it anymore, it should go back to its original position. The value of the variable 'toogle' in the code is true when my mouse is on the text, false when its not.
property real distance: myText.x
...
Text {
id: myText
property bool toogle
x:toogle?distance+2:distance
}
The problem is obviously that the value of distance will be increased when the mouse is on the text and that it will create a loop: the text will be always moving as long as the mouse is on it.
How can I save the value of the original x position of the text when it's created, and keep it unmodified to avoid having this undesired loop?
You could define a property and set it to a fixed value whenever the component loading is completed:
// Keep track of the original position.
property real originalPosition;
Component.onCompleted: {
originalPosition = myText.x;
}
I am a bit confused with your question though, do you want the text to keep moving or not whenever the mouse hovers over the text? The code you posted already contains a binding loop.
To detect mouse hovers you can define a MouseArea within your Text element and listen to the 'containsMouse' property to be able to reset the text's position:
MouseArea {
id: mouseArea
width: parent.width
height: parent.height
hoverEnabled: true
onContainsMouseChanged: {
console.log("Changed: " + containsMouse);
if (!containsMouse) {
myText.x = myText.originalPosition;
} else {
myText.x = mouseArea.containsMouse ? myText.originalPosition+2: myText.originalPosition;
}
}
}
This last implementation will only move the text 2 pixels whenever the text is hovered and back to the original position whenever the mouse stops hovering. It will NOT continuously move the text 2 pixels when hovered.