Added Android support for screen orientation control

modules/juce_core/native/java/JuceAppActivity.java

@@ -691,7 +691,7 @@ public class JuceAppActivity   extends Activity
                                                   int format, int width, int height);
     }
 
-    public NativeSurfaceView createNativeSurfaceView(long nativeSurfacePtr)
+    public NativeSurfaceView createNativeSurfaceView (long nativeSurfacePtr)
     {
         return new NativeSurfaceView (this, nativeSurfacePtr);
     }
@@ -1041,23 +1041,24 @@ public class JuceAppActivity   extends Activity
             return null;
 
         java.lang.reflect.Method method;
-        try {
+
+        try
+        {
             method = obj.getClass().getMethod ("getProperty", String.class);
-        } catch (SecurityException e) {
-            return null;
-        } catch (NoSuchMethodException e) {
-            return null;
         }
+        catch (SecurityException e)     { return null; }
+        catch (NoSuchMethodException e) { return null; }
 
         if (method == null)
             return null;
 
-        try {
+        try
+        {
             return (String) method.invoke (obj, property);
-        } catch (java.lang.IllegalArgumentException e) {
-        } catch (java.lang.IllegalAccessException e) {
-        } catch (java.lang.reflect.InvocationTargetException e) {
         }
+        catch (java.lang.IllegalArgumentException e) {}
+        catch (java.lang.IllegalAccessException e) {}
+        catch (java.lang.reflect.InvocationTargetException e) {}
 
         return null;
     }
@@ -1093,5 +1094,4 @@ public class JuceAppActivity   extends Activity
     {
         return new JuceThread(host);
     }
-
 }

modules/juce_core/native/juce_android_JNIHelpers.h

@@ -266,6 +266,7 @@ extern AndroidSystem android;
  METHOD (createNativeSurfaceView, "createNativeSurfaceView", "(J)L" JUCE_ANDROID_ACTIVITY_CLASSPATH "$NativeSurfaceView;") \
  METHOD (postMessage,            "postMessage",          "(J)V") \
  METHOD (finish,                 "finish",               "()V") \
+ METHOD (setRequestedOrientation,"setRequestedOrientation", "(I)V") \
  METHOD (getClipboardContent,    "getClipboardContent",  "()Ljava/lang/String;") \
  METHOD (setClipboardContent,    "setClipboardContent",  "(Ljava/lang/String;)V") \
  METHOD (excludeClipRegion,      "excludeClipRegion",    "(Landroid/graphics/Canvas;FFFF)V") \

modules/juce_gui_basics/components/juce_Desktop.cpp

@@ -386,10 +386,14 @@ void Desktop::setKioskModeComponent (Component* componentToUse, const bool allow
 //==============================================================================
 void Desktop::setOrientationsEnabled (const int newOrientations)
 {
-    // Dodgy set of flags being passed here! Make sure you specify at least one permitted orientation.
-    jassert (newOrientations != 0 && (newOrientations & ~allOrientations) == 0);
+    if (allowedOrientations != newOrientations)
+    {
+        // Dodgy set of flags being passed here! Make sure you specify at least one permitted orientation.
+        jassert (newOrientations != 0 && (newOrientations & ~allOrientations) == 0);
 
-    allowedOrientations = newOrientations;
+        allowedOrientations = newOrientations;
+        allowedOrientationsChanged();
+    }
 }
 
 bool Desktop::isOrientationEnabled (const DisplayOrientation orientation) const noexcept

modules/juce_gui_basics/components/juce_Desktop.h

@@ -429,6 +429,8 @@ private:
     bool kioskModeReentrant;
 
     int allowedOrientations;
+    void allowedOrientationsChanged();
+
     float masterScaleFactor;
 
     ComponentAnimator animator;

modules/juce_gui_basics/native/juce_android_Windowing.cpp

@@ -728,6 +728,38 @@ void Desktop::setKioskComponent (Component* kioskModeComponent, bool enableOrDis
     // TODO
 }
 
+//==============================================================================
+static jint getAndroidOrientationFlag (int orientations) noexcept
+{
+    enum
+    {
+        SCREEN_ORIENTATION_LANDSCAPE          = 0,
+        SCREEN_ORIENTATION_PORTRAIT           = 1,
+        SCREEN_ORIENTATION_USER               = 2,
+        SCREEN_ORIENTATION_REVERSE_LANDSCAPE  = 8,
+        SCREEN_ORIENTATION_REVERSE_PORTRAIT   = 9,
+        SCREEN_ORIENTATION_USER_LANDSCAPE     = 11,
+        SCREEN_ORIENTATION_USER_PORTRAIT      = 12,
+    };
+
+    switch (orientations)
+    {
+        case Desktop::upright:                                          return (jint) SCREEN_ORIENTATION_PORTRAIT;
+        case Desktop::upsideDown:                                       return (jint) SCREEN_ORIENTATION_REVERSE_PORTRAIT;
+        case Desktop::upright + Desktop::upsideDown:                    return (jint) SCREEN_ORIENTATION_USER_PORTRAIT;
+        case Desktop::rotatedAntiClockwise:                             return (jint) SCREEN_ORIENTATION_LANDSCAPE;
+        case Desktop::rotatedClockwise:                                 return (jint) SCREEN_ORIENTATION_REVERSE_LANDSCAPE;
+        case Desktop::rotatedClockwise + Desktop::rotatedAntiClockwise: return (jint) SCREEN_ORIENTATION_USER_LANDSCAPE;
+        default:                                                        return (jint) SCREEN_ORIENTATION_USER;
+    }
+}
+
+void Desktop::allowedOrientationsChanged()
+{
+    android.activity.callVoidMethod (JuceAppActivity.setRequestedOrientation,
+                                     getAndroidOrientationFlag (allowedOrientations));
+}
+
 //==============================================================================
 bool juce_areThereAnyAlwaysOnTopWindows()
 {
@@ -764,7 +796,7 @@ JUCE_JNI_CALLBACK (JUCE_ANDROID_ACTIVITY_CLASSNAME, setScreenSize, void, (JNIEnv
 //==============================================================================
 Image juce_createIconForFile (const File& file)
 {
-    return Image::null;
+    return Image();
 }
 
 //==============================================================================

modules/juce_gui_basics/native/juce_ios_UIViewComponentPeer.mm

@@ -1023,6 +1023,8 @@ void Desktop::setKioskComponent (Component* kioskModeComp, bool enableOrDisable,
     }
 }
 
+void Desktop::allowedOrientationsChanged() {}
+
 //==============================================================================
 void UIViewComponentPeer::repaint (const Rectangle<int>& area)
 {

modules/juce_gui_basics/native/juce_linux_Windowing.cpp

@@ -3746,6 +3746,8 @@ void Desktop::setKioskComponent (Component* comp, bool enableOrDisable, bool /*
         comp->setBounds (getDisplays().getMainDisplay().totalArea);
 }
 
+void Desktop::allowedOrientationsChanged() {}
+
 //==============================================================================
 ComponentPeer* Component::createNewPeer (int styleFlags, void* nativeWindowToAttachTo)
 {

modules/juce_gui_basics/native/juce_mac_NSViewComponentPeer.mm

@@ -2006,6 +2006,8 @@ void Desktop::setKioskComponent (Component* kioskComp, bool shouldBeEnabled, boo
    #endif
 }
 
+void Desktop::allowedOrientationsChanged() {}
+
 //==============================================================================
 ComponentPeer* Component::createNewPeer (int styleFlags, void* windowToAttachTo)
 {

modules/juce_gui_basics/native/juce_win32_Windowing.cpp

@@ -3311,6 +3311,8 @@ void Desktop::setKioskComponent (Component* kioskModeComp, bool enableOrDisable,
         kioskModeComp->setBounds (getDisplays().getMainDisplay().totalArea);
 }
 
+void Desktop::allowedOrientationsChanged() {}
+
 //==============================================================================
 struct MonitorInfo
 {