Introducing the PlatformPanel event type.

This event can be used by any platform plugin to implement
special application panels/overlayed menus.

Currently used by QNX only.

This replaces sending fake Qt::Key_Menu presses in the QNX
plugin. Qt::Key_Menu is already used when invoking context
menus with the keyboard.

( backport of qtbase/9695df4d44b228e7e778ff17d5cccac30967b1fd )

Change-Id: Id5cf96758f1104f454a2bb977b367d09d4685b62
Reviewed-by: Paul Olav Tvete <paul.tvete@digia.com>
Reviewed-by: Kevin Krammer <kevin.krammer@kdab.com>

8 files changed, 41 insertions, 5 deletions

diff --git a/src/corelib/kernel/qcoreevent.cpp b/src/corelib/kernel/qcoreevent.cpp
index 95a53cb..40ed300 100644
--- a/src/corelib/kernel/qcoreevent.cpp
+++ b/src/corelib/kernel/qcoreevent.cpp
@@ -183,6 +183,7 @@ QT_BEGIN_NAMESPACE
     \value PaletteChange                    Palette of the widget changed.
     \value ParentAboutToChange              The widget parent is about to change.
     \value ParentChange                     The widget parent has changed.
+    \value PlatformPanel                    A platform specific panel has been requested.
     \value Polish                           The widget is polished.
     \value PolishRequest                    The widget should be polished.
     \value QueryWhatsThis                   The widget should accept the event if it has "What's This?" help.
diff --git a/src/corelib/kernel/qcoreevent.h b/src/corelib/kernel/qcoreevent.h
index 36cb383..f67daf6 100644
--- a/src/corelib/kernel/qcoreevent.h
+++ b/src/corelib/kernel/qcoreevent.h
@@ -288,6 +288,9 @@ public:
         Gesture = 198,
         GestureOverride = 202,
 #endif
+
+        PlatformPanel = 212,
+
         // 512 reserved for Qt Jambi's MetaCall event
         // 513 reserved for Qt Jambi's DeleteOnMainThread event
 
diff --git a/src/gui/kernel/qapplication_p.h b/src/gui/kernel/qapplication_p.h
index 422e6de..e270a32 100644
--- a/src/gui/kernel/qapplication_p.h
+++ b/src/gui/kernel/qapplication_p.h
@@ -487,6 +487,7 @@ public:
     static void processKeyEvent(QWindowSystemInterfacePrivate::KeyEvent *e);
     static void processWheelEvent(QWindowSystemInterfacePrivate::WheelEvent *e);
     static void processTouchEvent(QWindowSystemInterfacePrivate::TouchEvent *e);
+    static void processPlatformPanelEvent(QWindowSystemInterfacePrivate::PlatformPanelEvent *e);
 
     static void processCloseEvent(QWindowSystemInterfacePrivate::CloseEvent *e);
 
diff --git a/src/gui/kernel/qapplication_qpa.cpp b/src/gui/kernel/qapplication_qpa.cpp
index aed539e..011d81b 100644
--- a/src/gui/kernel/qapplication_qpa.cpp
+++ b/src/gui/kernel/qapplication_qpa.cpp
@@ -137,6 +137,10 @@ void QApplicationPrivate::processWindowSystemEvent(QWindowSystemInterfacePrivate
     case QWindowSystemInterfacePrivate::LocaleChange:
         QApplicationPrivate::reportLocaleChange();
         break;
+    case QWindowSystemInterfacePrivate::PlatformPanel:
+        QApplicationPrivate::processPlatformPanelEvent(
+                static_cast<QWindowSystemInterfacePrivate::PlatformPanelEvent *>(e));
+        break;
     default:
         qWarning() << "Unknown user input event type:" << e->type;
         break;
@@ -185,6 +189,7 @@ static bool qt_try_modal(QWidget *widget, QEvent::Type type)
     case QEvent::MouseMove:
     case QEvent::KeyPress:
     case QEvent::KeyRelease:
+    case QEvent::PlatformPanel:
         block_event         = true;
         break;
     default:
@@ -777,6 +782,19 @@ void QApplicationPrivate::processMouseEvent(QWindowSystemInterfacePrivate::Mouse
 #endif // QT_NO_CONTEXTMENU
 }
 
+void QApplicationPrivate::processPlatformPanelEvent(QWindowSystemInterfacePrivate::PlatformPanelEvent *e)
+{
+    if (!e->widget)
+        return;
+
+    if (app_do_modal && !qt_try_modal(e->widget.data(), QEvent::PlatformPanel)) {
+        // a modal window is blocking this window, don't allow events through
+        return;
+    }
+
+    QEvent ev(QEvent::PlatformPanel);
+    QApplication::sendSpontaneousEvent(e->widget.data(), &ev);
+}
 
 //### there's a lot of duplicated logic here -- refactoring required!
 
diff --git a/src/gui/kernel/qwindowsysteminterface_qpa.cpp b/src/gui/kernel/qwindowsysteminterface_qpa.cpp
index 25c01ca..891ae6e 100644
--- a/src/gui/kernel/qwindowsysteminterface_qpa.cpp
+++ b/src/gui/kernel/qwindowsysteminterface_qpa.cpp
@@ -298,5 +298,11 @@ void QWindowSystemInterface::handleLocaleChange()
     QWindowSystemInterfacePrivate::queueWindowSystemEvent(e);
 }
 
+void QWindowSystemInterface::handlePlatformPanelEvent(QWidget *w)
+{
+    QWindowSystemInterfacePrivate::PlatformPanelEvent *e =
+            new QWindowSystemInterfacePrivate::PlatformPanelEvent(w);
+    QWindowSystemInterfacePrivate::queueWindowSystemEvent(e);
+}
 
 QT_END_NAMESPACE
diff --git a/src/gui/kernel/qwindowsysteminterface_qpa.h b/src/gui/kernel/qwindowsysteminterface_qpa.h
index efd0681..26fce4f9 100644
--- a/src/gui/kernel/qwindowsysteminterface_qpa.h
+++ b/src/gui/kernel/qwindowsysteminterface_qpa.h
@@ -102,6 +102,8 @@ public:
     static void handleScreenCountChange(int count);
 
     static void handleLocaleChange();
+
+    static void handlePlatformPanelEvent(QWidget *w);
 };
 
 QT_END_NAMESPACE
diff --git a/src/gui/kernel/qwindowsysteminterface_qpa_p.h b/src/gui/kernel/qwindowsysteminterface_qpa_p.h
index 1e763e3..cd59ad6 100644
--- a/src/gui/kernel/qwindowsysteminterface_qpa_p.h
+++ b/src/gui/kernel/qwindowsysteminterface_qpa_p.h
@@ -62,7 +62,8 @@ public:
         ScreenGeometry,
         ScreenAvailableGeometry,
         ScreenCountChange,
-        LocaleChange
+        LocaleChange,
+        PlatformPanel
     };
 
     class WindowSystemEvent {
@@ -200,6 +201,12 @@ public:
             : WindowSystemEvent(LocaleChange) { }
     };
 
+   class PlatformPanelEvent : public WindowSystemEvent {
+   public:
+        explicit PlatformPanelEvent(QWidget *w)
+            : WindowSystemEvent(PlatformPanel), widget(w) { }
+        QWeakPointer<QWidget> widget;
+    };
 
     static QList<WindowSystemEvent *> windowSystemEventQueue;
     static QMutex queueMutex;
diff --git a/src/plugins/platforms/blackberry/qbbnavigatoreventhandler.cpp b/src/plugins/platforms/blackberry/qbbnavigatoreventhandler.cpp
index b253257..0f19904 100644
--- a/src/plugins/platforms/blackberry/qbbnavigatoreventhandler.cpp
+++ b/src/plugins/platforms/blackberry/qbbnavigatoreventhandler.cpp
@@ -80,14 +80,12 @@ void QBBNavigatorEventHandler::handleOrientationChange(int angle)
 
 void QBBNavigatorEventHandler::handleSwipeDown()
 {
-    // simulate menu key press
 #if defined(QBBNAVIGATOREVENTHANDLER_DEBUG)
     qDebug() << Q_FUNC_INFO;
 #endif
-
     QWidget *w = QApplication::activeWindow();
-    QWindowSystemInterface::handleKeyEvent(w, QEvent::KeyPress, Qt::Key_Menu, Qt::NoModifier);
-    QWindowSystemInterface::handleKeyEvent(w, QEvent::KeyRelease, Qt::Key_Menu, Qt::NoModifier);
+    if (w)
+        QWindowSystemInterface::handlePlatformPanelEvent(w);
 }
 
 void QBBNavigatorEventHandler::handleExit()