[graphics/drawy/gsoc2026] src/widgets/controller: fix: handle switching apps while preedit is active

Git commit 4f9698ecc45c06b8cf86abff975df6094eb01e14 by Laurent Montel, on behalf of Abdelhadi Wael.
Committed on 06/08/2026 at 18:09.
Pushed by mlaurent into branch 'gsoc2026'.

fix: handle switching apps while preedit is active

M  +12   -1    src/widgets/controller/controller.cpp
M  +1    -0    src/widgets/controller/controller.hpp

https://invent.kde.org/graphics/drawy/-/commit/4f9698ecc45c06b8cf86abff975df6094eb01e14

diff --git a/src/widgets/controller/controller.cpp b/src/widgets/controller/controller.cpp
index 9f5850ad..62f45dc8 100644
--- a/src/widgets/controller/controller.cpp
+++ b/src/widgets/controller/controller.cpp
@@ -12,7 +12,6 @@
 #include "command/commandhistory.hpp"
 #include "command/insertitemcommand.hpp"
 #include "common/constants.hpp"
-#include "common/renderitems.hpp"
 #include "components/toolbar.hpp"
 #include "context/applicationcontext.hpp"
 #include "context/coordinatetransformer.hpp"
@@ -34,6 +33,7 @@ Controller::Controller(ApplicationContext *context, QObject *parent)
     , m_zoomTimer{new QTimer{this}}
 {
     connect(m_zoomTimer, &QTimer::timeout, this, &Controller::renderZoom);
+    connect(qApp, &QGuiApplication::applicationStateChanged, this, &Controller::applicationStateChanged);
 }
 
 Controller::~Controller()
@@ -418,6 +418,17 @@ void Controller::drop()
     m_context->renderingContext()->markForUpdate();
 }
 
+void Controller::applicationStateChanged(const Qt::ApplicationState state)
+{
+    if (state == Qt::ApplicationInactive || state == Qt::ApplicationSuspended) {
+        QGuiApplication::inputMethod()->reset();
+
+        const QList<QInputMethodEvent::Attribute> attributes;
+        QInputMethodEvent event(QString(), attributes);
+        inputMethodInvoked(&event);
+    }
+}
+
 void Controller::renderZoom()
 {
     if (m_zoomDelta == 0) {
diff --git a/src/widgets/controller/controller.hpp b/src/widgets/controller/controller.hpp
index 8b95e27f..7746a3db 100644
--- a/src/widgets/controller/controller.hpp
+++ b/src/widgets/controller/controller.hpp
@@ -36,6 +36,7 @@ public:
     void dragMove(QDragMoveEvent *event);
     void dragLeave();
     void drop();
+    void applicationStateChanged(Qt::ApplicationState state);
 
 private:
     void renderZoom();