Just a thought, you may try the Qml Shortcut component:
http://doc.qt.io/qt-5/qml-qtquick-shortcut.html
Not sure about the Shortcut think, I haven't play around too much with it
yet.
Keep a model and the current index of the column and is edit mode.
import QtQuick 2.4
import QtQuick.Window 2.2
Window {
id: window_
width: 800
height: 600
visible: true
property currentIndex: 0
property editMode: false
Shortcut
{
sequence: StandardKey.NextChild // Change for the actual key wanted
onActivated:
{
if(editMode)
++myModel[currentIndex].value;
else
currentIndex = (currentIndex + 1) % myModel.length; // wrap
around
}
}
// Add other shortcut here to enter/exit editMode: editMode = !editMode
// previous: currentIndex = (currentIndex - 1 + myModel.length) %
myModel.length;
property list<QtObject> myModel:
[
QtObject
{
property string name: 'meters'
property int value: 3
},
QtObject
{
property string name: 'centimeters'
property int value: 10
}
]
Row
{
spacing: 30
Repeater
{
id: repeater_
model: window_.myModel
MyColumn // do the highlight
{
selected: window_.currentIndex == index
editMode: selected && window_.editMode
value: modelData.value
name: modelData.name
}
}
}
}
Would be more neat I think, and way easier to maintain or add/remove stuff.
You could have a base object for each entry of the model that have default
property too.
On Thu, Mar 31, 2016 at 8:37 AM, Elvis Stansvik <elvst...@gmail.com> wrote:
> Hi,
>
> I'm working on an item representing a number to be edited by the user.
>
> My input is quite limited (only Left, Right and Enter, where Left and
> Right is actually the turning of a wheel), so the idea is to let the
> user navigating to the item with Left/Right, which will give it focus.
> If the user then presses Enter, the item enters and "editing" state.
> In the "editing" state, Left and Right will increase/descreas the
> number, and pressing Enter again will exit the "editing" state,
> returning to the default state ("").
>
> How can I handle key presses differently depending on state without
> resorting to procedural code like if/else on the state inside the
> onXXXPressed handlers? I thought I'd be able to assign to
> Keys.onXXXPressed inside State { PropertyChanges { ... }, but the
> property is not recognized there (I'm guessing because it's an
> attached property..?).
>
> Also, the KeyNavigation.left/right/etc. is a convenient way to do the
> navigation between items, but it seems incompatible with the
> Keys.onXXXPressed handlers? I thought I'd be able to skip accepting
> the key even in a Keys.onXXXPressed handler, and have it pass through
> to the KeyNavigation.xxx handler...? (I can do the navigation with
> someItem.forceActiveFocus() instead, but it's more typing and more
> error prone).
>
>
> Below is a working but rather ugly example of two numbers that can be
> edited this way. One can navigate between the numbers with Left/Right,
> and toggle "editing" mode with Enter (in which Left and Right controls
> the number value instead).
>
> How can I make this example more declarative / less ugly? (Besides the
> obviously putting things in a reusable component).
>
> Example:
>
> import QtQuick 2.4
> import QtQuick.Window 2.2
>
> Window {
> width: 800
> height: 600
> visible: true
>
> Row {
> spacing: 30
> Column {
> Text {
> text: "Meters"
> }
> Text {
> id: meters
> text: value
> font.underline: activeFocus
> font.pixelSize: 100
>
> property int value: 3
>
> focus: true
>
> states: [
> State {
> name: "editing"
> PropertyChanges {
> target: meters
> color: "green"
> }
> }
> ]
>
> Keys.onReturnPressed: {
> if (state == "")
> state = "editing"
> else
> state = ""
> event.accepted = true
> }
>
> Keys.onRightPressed: {
> if (state == "editing")
> value++
> else
> centimeters.forceActiveFocus()
> event.accepted = true
> }
>
> Keys.onLeftPressed: {
> if (state == "editing")
> value--
> else
> centimeters.forceActiveFocus()
> event.accepted = true
> }
> }
> }
> Column {
> Text {
> text: "Centimeters"
> }
> Text {
> id: centimeters
> text: value
> font.underline: activeFocus
> font.pixelSize: 100
>
> property int value: 14
>
> states: [
> State {
> name: "editing"
> PropertyChanges {
> target: centimeters
> color: "green"
> }
> }
> ]
>
> Keys.onReturnPressed: {
> if (state == "")
> state = "editing"
> else
> state = ""
> event.accepted = true
> }
>
> Keys.onRightPressed: {
> if (state == "editing")
> value++
> else
> meters.forceActiveFocus()
> event.accepted = true
> }
>
> Keys.onLeftPressed: {
> if (state == "editing")
> value--
> else
> meters.forceActiveFocus()
> event.accepted = true
> }
> }
> }
> }
> }
>
>
> Thanks for any advice,
> Elvis
> _______________________________________________
> Interest mailing list
> Interest@qt-project.org
> http://lists.qt-project.org/mailman/listinfo/interest
>
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