inputpanel example extended, but still some way to go until it works

playground/inputpanel/main.cpp

@@ -12,13 +12,16 @@
 #include <QskDialog.h>
 #include <QskFocusIndicator.h>
 #include <QskLinearBox.h>
+#include <QskListView.h>
 
 #include <QskWindow.h>
 #include <QskSetup.h>
+#include <QskAspect.h>
 
 #include <QskObjectCounter.h>
 
 #include <QGuiApplication>
+#include <QFontMetricsF>
 
 #define STRINGIFY(x) #x
 #define STRING(x) STRINGIFY(x)
@@ -28,10 +31,9 @@
 class InputBox : public QskLinearBox
 {
 public:
-    InputBox( QQuickItem* parentItem = nullptr ) :
+    InputBox( QQuickItem* parentItem = nullptr ):
         QskLinearBox( Qt::Vertical, parentItem )
     {
-        setBackgroundColor( "PapayaWhip" );
         setDefaultAlignment( Qt::AlignHCenter | Qt::AlignTop );
 
         setMargins( 10 );
@@ -56,6 +58,107 @@ public:
     }
 };
 
+class LocaleListView : public QskListView
+{
+public:
+    LocaleListView( QQuickItem* parentItem = nullptr ):
+        QskListView( parentItem ),
+        m_maxWidth( 0.0 )
+    {
+        append( QLocale::Bulgarian, QStringLiteral( "български език" ) );
+        append( QLocale::Czech, QStringLiteral( "Čeština" ) );
+        append( QLocale::German, QStringLiteral( "Deutsch" ) );
+        append( QLocale::Danish, QStringLiteral( "Dansk" ) );
+
+        append( QLocale( QLocale::English, QLocale::UnitedStates ), QStringLiteral( "English (US)" ) );
+        append( QLocale( QLocale::English, QLocale::UnitedKingdom ), QStringLiteral( "English (UK)" ) );
+
+        append( QLocale::Spanish, QStringLiteral( "Español" ) );
+        append( QLocale::Finnish, QStringLiteral( "Suomi" ) );
+        append( QLocale::French, QStringLiteral( "Français" ) );
+        append( QLocale::Hungarian, QStringLiteral( "Magyar" ) );
+        append( QLocale::Italian, QStringLiteral( "Italiano" ) );
+        append( QLocale::Japanese, QStringLiteral( "日本語" ) );
+        append( QLocale::Latvian, QStringLiteral( "Latviešu" ) );
+        append( QLocale::Lithuanian, QStringLiteral( "Lietuvių") );
+        append( QLocale::Dutch, QStringLiteral( "Nederlands" ) );
+        append( QLocale::Portuguese, QStringLiteral( "Português" ) );
+        append( QLocale::Romanian, QStringLiteral( "Română" ) );
+        append( QLocale::Russian, QStringLiteral( "Русский" ) );
+        append( QLocale::Slovenian, QStringLiteral( "Slovenščina" ) );
+        append( QLocale::Slovak, QStringLiteral( "Slovenčina" ) );
+        append( QLocale::Turkish, QStringLiteral( "Türkçe" ) );
+        append( QLocale::Chinese, QStringLiteral( "中文" ) );
+
+        setSizePolicy( Qt::Horizontal, QskSizePolicy::Fixed );
+        setPreferredWidth( columnWidth( 0 ) + 20 );
+
+        setScrollableSize( QSizeF( columnWidth( 0 ), rowCount() * rowHeight() ) );
+
+        // TODO:
+        // 1) changing the keyboard layouts does not yet work
+        // 2) QskInputPanel does not work properly in the threaded environment
+#if 1
+        connect( this, &QskListView::selectedRowChanged,
+            this, [ = ] { qskSetup->inputPanel()->setLocale( m_values[selectedRow()].second ); } );
+#else
+        connect( this, &QskListView::selectedRowChanged,
+            this, [ = ] { QLocale::setDefault( m_values[selectedRow()].second ); } );
+#endif
+    }
+
+    virtual int rowCount() const override final
+    {
+        return m_values.count();
+    }
+
+    virtual int columnCount() const override final
+    {
+        return 1;
+    }
+
+    virtual qreal columnWidth( int ) const override
+    {
+        if ( m_maxWidth == 0.0 )
+        {
+            using namespace QskAspect;
+
+            QFontMetricsF fm( effectiveFont( Text ) );
+
+            for ( auto entry : m_values )
+                m_maxWidth = qMax( m_maxWidth, fm.width( entry.first ) );
+
+            m_maxWidth += metric( Cell | Padding | LeftEdge )
+                + metric( Cell | Padding | RightEdge );
+        }
+
+        return m_maxWidth;
+    }
+
+    virtual qreal rowHeight() const override
+    {
+        using namespace QskAspect;
+
+        return QFontMetrics( effectiveFont( Text ) ).height()
+               + metric( Cell | Padding | TopEdge )
+               + metric( Cell | Padding | BottomEdge );
+    }
+
+    virtual QVariant valueAt( int row, int ) const override final
+    {
+        return m_values[row].first;
+    }
+
+private:
+    inline void append( QLocale locale, const QString& name )
+    {
+        m_values += qMakePair( QString( name ), locale );
+    }
+
+    QVector< QPair< QString, QLocale > > m_values;
+    mutable qreal m_maxWidth;
+};
+
 int main( int argc, char* argv[] )
 {
 #ifdef ITEM_STATISTICS
@@ -76,11 +179,19 @@ int main( int argc, char* argv[] )
     qskDialog->setPolicy( QskDialog::EmbeddedBox );
 #endif
 
+    auto box = new QskLinearBox( Qt::Horizontal );
+    box->setSpacing( 10 );
+    box->setMargins( 20 );
+
+    (void) new LocaleListView( box );
+    (void) new InputBox( box );
+
     QskWindow window;
-    window.addItem( new InputBox() );
+    window.setColor( "PapayaWhip" );
+    window.addItem( box );
     window.addItem( new QskFocusIndicator() );
 
-    window.resize( 800, 400 );
+    window.resize( 800, 300 );
     window.show();
 
     return app.exec();