How to enable Virtual Keyboard Languages

Angel Popov

Hello,

I'm using c++ and qt quick to develop my app and it runs on raspberry pi. I have a qml file called KeyboardPanel.qml and it has the following:

import QtQuick 2.7
import QtQuick.VirtualKeyboard 2.1
import QtQuick.VirtualKeyboard.Settings 2.0

InputPanel {

    id: inputPanel
    Component.onCompleted:{
        VirtualKeyboardSettings.styleName = "retro"
        console.log("locales available: " + VirtualKeyboardSettings.availableLocales)
        console.log("Locale before changing it: " + VirtualKeyboardSettings.locale)
        VirtualKeyboardSettings.locale = "ru_RU";
        console.log("Locale after changing it: " + VirtualKeyboardSettings.locale)
        VirtualKeyboardSettings.customLayoutsOnly = true
    }

    y: 5000
    x: 5000
    height: 600
    width: 800
    states: State {
        name: "visible"
        when: inputPanel.active
        PropertyChanges {
            target: inputPanel
            y: 450
            x: 550
        }
    }
    transitions: Transition {
        from: ""
        to: "visible"
        reversible: true
        ParallelAnimation {
            NumberAnimation {
                properties: "y"
                duration: 500
                easing.type: Easing.InOutQuad
            }
        }
    }
}

The keyboard shows up and works fine on text fields, but I cannot add additional languages.

Thanks in advance!

? Offline

Hi! Did you check that availableLocales : list<string> contains the locales you need?

Angel Popov

Yes I do check it like

console.log("locales available: " + VirtualKeyboardSettings.availableLocales)

It is empty.

? Offline

The documentation (http://doc.qt.io/qt-5/qml-qtquick-virtualkeyboard-settings-virtualkeyboardsettings.html#locale-prop) says:

locale : string
(...)
If the locale setting is incorrect, or it is not in the list of supported locales, it is ignored and the default setting is used instead.

A locale is supported if it is included in the list of availableLocales.

And in http://doc.qt.io/qt-5/qml-qtquick-virtualkeyboard-settings-virtualkeyboardsettings.html#availableLocales-prop it says:

availableLocales : list<string>
(...)
This list is read-only and depends on the build-time configuration of the virtual keyboard.

So I'd conclude that you have to rebuild VirtualKeyboard with different configuration.

Angel Popov

I build qt 5.8 on raspberry like:

./configure -v -opengl es2 -qt-freetype -device linux-rasp-pi-g''+ -device-option CROSS_COMPILE=/usr/bin/ -optimized-qmake -reduce-exports -release -qt-pcre -qt-libpng -make libs -prefix /usr/local/qt5

How can I rebuild only virtualkeyboard module?
Can I do the same on windows?

Thanks

SGaist

Hi,

You don't need to rebuild the whole Qt.
Get the module sources and then use the classic qmake/make/make install.

Take the time to checkout if there's any option you can passe to get more locale supported.

Angel Popov

I have tried to compile the module. Then I compiled the whole Qt and still cannot get it working

SGaist

What configuration did you give when compiling the module ?

Angel Popov

@SGaist

I just copy the source from git repository.

qmake qtvirtualkeyboard.pro
make
make install

SGaist

Try with qmake "CONFIG+=lang-all".

Angel Popov

@SGaist

Thank you! It works!

michaelL

Hi when i do make i get this errors:

cd virtualkeyboard/ && ( test -e Makefile || /usr/lib/x86_64-linux-gnu/qt5/bin/qmake /home/devel/Qt5.7.1/5.7/Src/qtvirtualkeyboard/src/virtualkeyboard/virtualkeyboard.pro -o Makefile ) && make -f Makefile
make[2]: Entering directory '/home/devel/Qt5.7.1/5.7/Src/qtvirtualkeyboard/src/virtualkeyboard'
g++ -c -g -O2 -fstack-protector-strong -Wformat -Werror=format-security -D_FORTIFY_SOURCE=2 -O2 -fvisibility=hidden -fvisibility-inlines-hidden -std=c++0x -fno-exceptions -Wall -W -D_REENTRANT -fPIC -DQT_VIRTUALKEYBOARD_DEFAULT_STYLE="default" -DQT_VIRTUALKEYBOARD_DESKTOP -DQT_VIRTUALKEYBOARD_HAVE_XCB -DQT_NO_EXCEPTIONS -D_LARGEFILE64_SOURCE -D_LARGEFILE_SOURCE -DQT_NO_DEBUG -DQT_PLUGIN -DQT_QUICK_LIB -DQT_QML_LIB -DQT_NETWORK_LIB -DQT_GUI_LIB -DQT_CORE_LIB -I/usr/lib/x86_64-linux-gnu/qt5/mkspecs/linux-g++-64 -I. -isystem /usr/include/x86_64-linux-gnu/qt5 -isystem /usr/include/x86_64-linux-gnu/qt5/QtQuick -isystem /usr/include/x86_64-linux-gnu/qt5/QtQml -isystem /usr/include/x86_64-linux-gnu/qt5/QtGui/5.3.2 -isystem /usr/include/x86_64-linux-gnu/qt5/QtGui/5.3.2/QtGui -isystem /usr/include/x86_64-linux-gnu/qt5/QtCore/5.3.2 -isystem /usr/include/x86_64-linux-gnu/qt5/QtCore/5.3.2/QtCore -isystem /usr/include/x86_64-linux-gnu/qt5/QtNetwork -isystem /usr/include/x86_64-linux-gnu/qt5/QtGui -isystem /usr/include/x86_64-linux-gnu/qt5/QtCore -I.moc -o .obj/inputcontext.o inputcontext.cpp
inputcontext.cpp: In member function ‘void QtVirtualKeyboard::InputContext::setSelectionOnFocusObject(const QPointF&, const QPointF&)’:
inputcontext.cpp:566:5: error: ‘setSelectionOnFocusObject’ is not a member of ‘QPlatformInputContext’
QPlatformInputContext::setSelectionOnFocusObject(anchorPos, cursorPos);
^
inputcontext.cpp: In member function ‘void QtVirtualKeyboard::InputContext::update(Qt::InputMethodQueries)’:
inputcontext.cpp:669:66: error: ‘ImInputItemClipRectangle’ is not a member of ‘Qt’
QRectF inputItemClipRect = d->inputContext->inputMethodQuery(Qt::ImInputItemClipRectangle).toRectF();
^
inputcontext.cpp:670:59: error: ‘ImAnchorRectangle’ is not a member of ‘Qt’
QRectF anchorRect = d->inputContext->inputMethodQuery(Qt::ImAnchorRectangle).toRectF();
^
inputcontext.cpp:671:59: error: ‘ImAnchorRectangle’ is not a member of ‘Qt’
QRectF cursorRect = d->inputContext->inputMethodQuery(Qt::ImAnchorRectangle).toRectF();
^
Makefile:641: recipe for target '.obj/inputcontext.o' failed
make[2]: *** [.obj/inputcontext.o] Error 1
make[2]: Leaving directory '/home/devel/Qt5.7.1/5.7/Src/qtvirtualkeyboard/src/virtualkeyboard'
Makefile:40: recipe for target 'sub-virtualkeyboard-make_first' failed
make[1]: *** [sub-virtualkeyboard-make_first] Error 2
make[1]: Leaving directory '/home/devel/Qt5.7.1/5.7/Src/qtvirtualkeyboard/src'
Makefile:40: recipe for target 'sub-src-make_first' failed
make: *** [sub-src-make_first] Error 2

Any idea?

SGaist

Hi,

You are trying to build the module that is provided with Qt 5.7.1 with the Qt version installed by your distribution which is 5.3.2. Use the full path to your 5.7.1 qmake when building the module.

michaelL

I worked for me now too.
I did it in Qt Creator. Open the project and:
-In "Build Step" qmake, add in additional arguments: CONFIG+=lang-all
-Add Build Step "make" with argumant "install"

small_bird

@Angel-Popov Hello, I try to change the height, however, it does not work.Could you please help me? Thanks in advance!