Unify input device hotplugging support for embedded

On embedded the mouse cursor will now appear and reappear regardless of
how the input handling code is loaded (via a generic plugin or compiled-in
to the platform plugin).

Instead of passing around QDeviceDiscovery instances that only works
when compiling-in the code into the platform plugin, introduce a new
internal central QInputDeviceManager. The single instance of this
provides a place to store any future input device related signals and
properties.

Also introduce mouse hotplugging support to linuxfb.

[ChangeLog][QtGui] The mouse cursor on Embedded Linux is now handling
hotplugging correctly with eglfs and linuxfb regardless of how the input
handling code is loaded (via a generic plugin or built in to the platform
plugin).

Change-Id: I147c1b04a193baf216598015264f2c06e1b20f84
Reviewed-by: Andy Nichols <andy.nichols@theqtcompany.com>

1 files changed, 1 insertions, 6 deletions

diff --git a/src/platformsupport/eglconvenience/qeglplatformintegration.cpp b/src/platformsupport/eglconvenience/qeglplatformintegration.cpp
index e2a215d35f..ef794f0e1b 100644
--- a/src/platformsupport/eglconvenience/qeglplatformintegration.cpp
+++ b/src/platformsupport/eglconvenience/qeglplatformintegration.cpp
@@ -352,12 +352,7 @@ void QEGLPlatformIntegration::createInputHandlers()
 {
 #if !defined(QT_NO_EVDEV) && (!defined(Q_OS_ANDROID) || defined(Q_OS_ANDROID_NO_SDK))
     m_kbdMgr = new QEvdevKeyboardManager(QLatin1String("EvdevKeyboard"), QString() /* spec */, this);
-    QEvdevMouseManager *mouseMgr = new QEvdevMouseManager(QLatin1String("EvdevMouse"), QString() /* spec */, this);
-    Q_FOREACH (QScreen *screen, QGuiApplication::screens()) {
-        QEGLPlatformCursor *cursor = qobject_cast<QEGLPlatformCursor *>(screen->handle()->cursor());
-        if (cursor)
-            cursor->setMouseDeviceDiscovery(mouseMgr->deviceDiscovery());
-    }
+    new QEvdevMouseManager(QLatin1String("EvdevMouse"), QString() /* spec */, this);
 #ifndef QT_NO_TSLIB
     const bool useTslib = qEnvironmentVariableIntValue("QT_QPA_EGLFS_TSLIB");
     if (useTslib)