Implement external keyboard layouts support

* Add possibility to override and exclude built-in keyboard layouts
* Add QT_VIRTUALKEYBOARD_LAYOUT_PATH environment variable specifying
 the layout location on the file system or inside a qrc resource
* Update documentation accordingly

[ChangeLog] Add support for external keyboard layouts, which allows overriding and exclusion of the built-in keyboard layouts

Task-number: QTBUG-54254
Change-Id: I960b942c031221d29dbdf1cabed78be8d32f43ef
Reviewed-by: Mitch Curtis <mitch.curtis@qt.io>

1 files changed, 18 insertions, 1 deletions

diff --git a/src/virtualkeyboard/settings.cpp b/src/virtualkeyboard/settings.cpp
index f0d07d27..f01c506d 100644
--- a/src/virtualkeyboard/settings.cpp
+++ b/src/virtualkeyboard/settings.cpp
@@ -41,7 +41,8 @@ public:
         styleName(),
         locale(),
         availableLocales(),
-        activeLocales()
+        activeLocales(),
+        layoutPath()
     {}
 
     QString style;
@@ -49,6 +50,7 @@ public:
     QString locale;
     QStringList availableLocales;
     QStringList activeLocales;
+    QUrl layoutPath;
 };
 
 static QScopedPointer<Settings> s_settingsInstance;
@@ -145,4 +147,19 @@ void Settings::setActiveLocales(const QStringList &activeLocales)
     }
 }
 
+QUrl Settings::layoutPath() const
+{
+    Q_D(const Settings);
+    return d->layoutPath;
+}
+
+void Settings::setLayoutPath(const QUrl &layoutPath)
+{
+    Q_D(Settings);
+    if (d->layoutPath != layoutPath) {
+        d->layoutPath = layoutPath;
+        emit layoutPathChanged();
+    }
+}
+
 } // namespace QtVirtualKeyboard