Clean-up of on-screen keyboard code

- Moved all platform-specific code to UBPlatformUtils
- For now, removed support (on Linux) for checking whether onboard is 
running when OpenBoard is started (it wasn't working anyway, but it needs a
cleaner solution for all 3 platforms)

src/board/UBBoardController.cpp

@@ -89,15 +89,6 @@
 
 #include "core/memcheck.h"
 
-#ifdef Q_OS_LINUX
-#include <QProcess>
-bool onboardIsAlreadyRunning = true;
-#endif
-
-#ifdef Q_OS_OSX
-#include <QProcess>
-#endif
-
 UBBoardController::UBBoardController(UBMainWindow* mainWindow)
     : UBDocumentContainer(mainWindow->centralWidget())
     , mMainWindow(mainWindow)
@@ -172,12 +163,6 @@ void UBBoardController::init()
 
 UBBoardController::~UBBoardController()
 {
-#ifdef Q_OS_LINUX
-    if(!onboardIsAlreadyRunning){
-        QProcess newProcess;
-        newProcess.startDetached("killall onboard");
-    }
-#endif
     delete mDisplayView;
 }
 
@@ -836,36 +821,11 @@ void UBBoardController::showKeyboard(bool show)
     if(show)
         UBDrawingController::drawingController()->setStylusTool(UBStylusTool::Selector);
 
-#ifdef Q_OS_LINUX
-    static bool isFirstTime = true;
-    if(isFirstTime){
-        QProcess isAlreadyRunningProcess;
-        QString psAuxGrepC = "ps aux";
-        isAlreadyRunningProcess.start(psAuxGrepC);
-        isAlreadyRunningProcess.waitForFinished();
-        QString output(isAlreadyRunningProcess.readAll());
-        if(output.count("onboard") != 0)
-            onboardIsAlreadyRunning = true;
-        else
-            onboardIsAlreadyRunning = false;
-
-        isFirstTime = false;
-    }
-    if(UBSettings::settings()->useSystemOnScreenKeybard->get().toBool()){
-        QProcess newProcess;
-        newProcess.startDetached("/usr/bin/onboard");
-    }
+    if(UBSettings::settings()->useSystemOnScreenKeybard->get().toBool())
+        UBPlatformUtils::showOSK(show);
     else
         mPaletteManager->showVirtualKeyboard(show);
 
-#elif defined(Q_OS_OSX)
-    if(UBSettings::settings()->useSystemOnScreenKeybard->get().toBool())
-        UBPlatformUtils::showOSK();
-
-#else
-    mPaletteManager->showVirtualKeyboard(show);
-#endif
-
 }
 
 

src/frameworks/UBPlatformUtils.h

@@ -30,6 +30,7 @@
 
 #include <QtCore>
 #include <QIcon>
+#include <QProcess>
 
 class QMainWindow;
 
@@ -205,10 +206,10 @@ public:
         static QStringList availableTranslations();
         static void setFrontProcess();
         static void showFullScreen(QWidget * pWidget);
+        static void showOSK(bool show);
 
 #ifdef Q_OS_OSX
         static void SetMacLocaleByIdentifier(const QString& id);
-        static void showOSK();
 #endif
 };
 

src/frameworks/UBPlatformUtils_linux.cpp

@@ -440,3 +440,10 @@ void UBPlatformUtils::showFullScreen(QWidget *pWidget)
     pWidget->showFullScreen();
 }
 
+void UBPlatformUtils::showOSK(bool show)
+{
+    if (show) {
+        QProcess newProcess;
+        newProcess.startDetached("/usr/bin/env onboard");
+    }
+}

src/frameworks/UBPlatformUtils_mac.mm

@@ -610,15 +610,19 @@ void UBPlatformUtils::showFullScreen(QWidget *pWidget)
 }
 
 
-void UBPlatformUtils::showOSK()
+void UBPlatformUtils::showOSK(bool show)
 {
-    [[NSAutoreleasePool alloc] init];
+    // TODO: enable hiding OSK
 
-    CFDictionaryRef properties =
-    (CFDictionaryRef)[NSDictionary
-              dictionaryWithObject: @"com.apple.KeyboardViewer"
-              forKey: (NSString *)kTISPropertyInputSourceID];
-    NSArray *sources = (NSArray *)TISCreateInputSourceList(properties, false);
+    if (show) {
+        [[NSAutoreleasePool alloc] init];
 
-    TISSelectInputSource((TISInputSourceRef)[sources objectAtIndex: 0]);
+        CFDictionaryRef properties =
+        (CFDictionaryRef)[NSDictionary
+                  dictionaryWithObject: @"com.apple.KeyboardViewer"
+                  forKey: (NSString *)kTISPropertyInputSourceID];
+        NSArray *sources = (NSArray *)TISCreateInputSourceList(properties, false);
+
+        TISSelectInputSource((TISInputSourceRef)[sources objectAtIndex: 0]);
+    }
 }

src/frameworks/UBPlatformUtils_win.cpp

@@ -436,3 +436,9 @@ void UBPlatformUtils::showFullScreen(QWidget *pWidget)
 {
     pWidget->showFullScreen();
 }
+
+void UBPlatformUtils::showOSK(bool show)
+{
+    Q_UNUSED(show);
+    // No system OSK support yet
+}