[Interest] Capital letters with Qt Virtual Keyboard

[Mitch Curtis]

> -----Original Message-----
> From: Luca Carlon <carlon.luca at gmail.com>
> Sent: Tuesday, 24 July 2018 12:45 PM
> To: Mitch Curtis <mitch.curtis at qt.io>; <interest at qt-project.org>
> <interest at qt-project.org>
> Subject: Fwd: [Interest] Capital letters with Qt Virtual Keyboard
> 
> On Tue, Jul 24, 2018 at 11:29 AM Mitch Curtis <mitch.curtis at qt.io> wrote:
> >
> > > -----Original Message-----
> > > From: Interest <interest-bounces+mitch.curtis=qt.io at qt-project.org>
> > > On Behalf Of Luca Carlon
> > > Sent: Monday, 23 July 2018 7:48 PM
> > > To: <interest at qt-project.org> <interest at qt-project.org>
> > > Subject: [Interest] Capital letters with Qt Virtual Keyboard
> > >
> > > Hello! I wrote this simple code with the Qt Virtual Keyboard:
> > >
> > > import QtQuick 2.8
> > > import QtQuick.VirtualKeyboard 2.3
> > > Rectangle {
> > >        width: 800
> > >        height: 800
> > >        TextInput {
> > >                anchors.top: parent.top
> > >                anchors.bottom: panel.top
> > >                width: parent.width
> > >                focus: true
> > >        }
> > >        InputPanel {
> > >                id: panel
> > >                anchors.left: parent.left
> > >                anchors.right: parent.right
> > >                anchors.bottom: parent.bottom
> > >        }
> > > }
> > >
> > >
> > > What I notice is that the shift key is not enabled. However, it
> > > becomes enabled if I click on the TextInput. Is this the expected
> > > behavior? Is it possible to enable it automatically?
> >
> > What do you mean by enable it automatically? What is the expected
> behaviour?
> 
> Thank you for your answer! (and sorry, sent you this twice)
> 
> What I see here is that when the sample above runs in Qt 5.11.0, the focus is
> on the TextInput, the shift button is not enabled and not "selected", letters
> are lowercase. Do you see the same?

How do you give it focus without clicking it? As soon as it gets active focus (whether by tab or mouse), the virtual keyboard should pop up.

> If I click on the TextInput element, the shift button is enabled, it is selected
> and letters are uppercase. I'm not sure why, I'd expect the shift key to be
> immediately enabled and selected and also letters to be uppercase. Why
> should a click be needed?
> At the moment I temporarily changed this by not checking for visibility here:
> https://github.com/qt/qtvirtualkeyboard/blob/5.11/src/virtualkeyboard/shif
> thandler.cpp#L271.
> Is it normal that isVisible() returns false there at the beginning?
> 
> What I'm trying to do actually is to get the pressed keys in a custom
> InputMethod object instantiated in QML, without having to introduce a
> TextInput at all. In that case I see the same behaviour. Do you think this is the
> proper way to set a custom InputMethod?
> 
> InputMethod { id: myInputMethod; [...] }
> Component.onCompleted: { InputContext.inputEngine.inputMethod =
> myInputMethod }
> 
> By doing this I also see that the shift key is not automatically "deselected"
> after a key is pressed. Any idea why?
> 
> > > Also, is there anything wrong in the sample above? When I click on
> > > the key that switches to the synbols I get a considerable amount of
> warnings:
> > >
> > > qrc:/QtQuick/VirtualKeyboard/content/styles/default/style.qml:66:9:
> > > QML
> > > Rectangle: Cannot anchor to an item that isn't a parent or sibling.
> > > qrc:/QtQuick/VirtualKeyboard/content/styles/default/style.qml:66:9:
> > > QML
> > > Rectangle: Cannot anchor to an item that isn't a parent or sibling.
> > > qrc:/QtQuick/VirtualKeyboard/content/styles/default/style.qml:66:9:
> > > QML
> > > Rectangle: Cannot anchor to an item that isn't a parent or sibling.
> > > qrc:/QtQuick/VirtualKeyboard/content/styles/default/style.qml:66:9:
> > > QML
> > > Rectangle: Cannot anchor to an item that isn't a parent or sibling.
> > > qrc:/QtQuick/VirtualKeyboard/content/styles/default/style.qml:66:9:
> > > QML
> > > Rectangle: Cannot anchor to an item that isn't a parent or sibling.
> > > qrc:/QtQuick/VirtualKeyboard/content/styles/default/style.qml:66:9:
> > > QML
> > > Rectangle: Cannot anchor to an item that isn't a parent or sibling.
> > > qrc:/QtQuick/VirtualKeyboard/content/styles/default/style.qml:66:9:
> > > QML
> > > Rectangle: Cannot anchor to an item that isn't a parent or sibling.
> > > qrc:/QtQuick/VirtualKeyboard/content/styles/default/style.qml:66:9:
> > > QML
> > > Rectangle: Cannot anchor to an item that isn't a parent or sibling.
> > > qrc:/QtQuick/VirtualKeyboard/content/styles/default/style.qml:66:9:
> > > QML
> > > Rectangle: Cannot anchor to an item that isn't a parent or sibling.
> > > qrc:/QtQuick/VirtualKeyboard/content/styles/default/style.qml:66:9:
> > > QML
> > > Rectangle: Cannot anchor to an item that isn't a parent or sibling.
> > > qrc:/QtQuick/VirtualKeyboard/content/styles/default/style.qml:135:9:
> > > QML
> > > Rectangle: Cannot anchor to an item that isn't a parent or sibling.
> > > [...]
> > >
> > > The result seems correct, but I guess those warnings mean I did
> > > something wrong.
> >
> > Which Qt version are you using? See
> https://bugreports.qt.io/browse/QTBUG-67677 for the warnings. I'm unable
> to reproduce them with the 5.9 branch, so it could be that they've been
> indirectly fixed somehow. There are fixes for the warnings in 5.11.1 and dev.
> 
> Perfect, thank you!
> 
> Luca