client: reimplement QPlatformIntegration::possibleKeys()

This is required to trigger more complex shortcut sequences. For
example, with 'us' keyboard layout to enter '%' or '+' you have to
press 'Shift' button. Previosly the following shortcuts could not be
triggered:

'Shift' + '5'
'%'

'Ctrl' + '+'
'Ctrl' + 'Shift' + '='

The same function also ensures that these shortcuts work with non-latin
keyboard layouts.

Change-Id: Id50c7bb28cf76b9f7a861ced7894b2cacae6ed65
Reviewed-by: David Edmundson <davidedmundson@kde.org>
Reviewed-by: Gatis Paeglis <gatis.paeglis@qt.io>
Reviewed-by: Johan Helsing <johan.helsing@qt.io>

1 files changed, 7 insertions, 0 deletions

diff --git a/src/client/qwaylandintegration.cpp b/src/client/qwaylandintegration.cpp
index 3a389d9e..ea2b50b4 100644
--- a/src/client/qwaylandintegration.cpp
+++ b/src/client/qwaylandintegration.cpp
@@ -293,6 +293,13 @@ QWaylandDisplay *QWaylandIntegration::display() const
     return mDisplay.data();
 }
 
+QList<int> QWaylandIntegration::possibleKeys(const QKeyEvent *event) const
+{
+    if (auto *seat = mDisplay->currentInputDevice())
+        return seat->possibleKeys(event);
+    return {};
+}
+
 QStringList QWaylandIntegration::themeNames() const
 {
     return GenericWaylandTheme::themeNames();