Bug 2739 - [Android] No support for SDL_DisableScreenSaver by Martin Gerhardy

android-project/src/org/libsdl/app/SDLActivity.java

@@ -187,6 +187,13 @@ public class SDLActivity extends Activity {
         return super.dispatchKeyEvent(event);
     }
 
+    public static void suspendScreenSaver(boolean suspend) {
+        if (suspend)
+            mSingleton.getWindow().addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);
+        else
+            mSingleton.getWindow().clearFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);
+    }
+
     /** Called by onPause or surfaceDestroyed. Even if surfaceDestroyed
      *  is the first to be called, mIsSurfaceReady should still be set
      *  to 'true' during the call to onPause (in a usual scenario).

src/core/android/SDL_android.c

@@ -77,6 +77,7 @@ static jmethodID midAudioWriteShortBuffer;
 static jmethodID midAudioWriteByteBuffer;
 static jmethodID midAudioQuit;
 static jmethodID midPollInputDevices;
+static jmethodID midSuspendScreenSaver;
 
 /* Accelerometer data storage */
 static float fLastAccelerometer[3];
@@ -131,6 +132,8 @@ JNIEXPORT void JNICALL SDL_Android_Init(JNIEnv* mEnv, jclass cls)
                                 "audioQuit", "()V");
     midPollInputDevices = (*mEnv)->GetStaticMethodID(mEnv, mActivityClass,
                                 "pollInputDevices", "()V");
+    midSuspendScreenSaver = (*mEnv)->GetStaticMethodID(mEnv, mActivityClass,
+                                "suspendScreenSaver", "(Z)V");
 
     bHasNewData = false;
 
@@ -444,7 +447,13 @@ static void LocalReferenceHolder_Cleanup(struct LocalReferenceHolder *refholder)
 
 static SDL_bool LocalReferenceHolder_IsActive()
 {
-    return s_active > 0;    
+    return s_active > 0;
+}
+
+void Android_JNI_SuspendScreenSaver(SDL_bool suspend)
+{
+    JNIEnv *env = Android_JNI_GetEnv();
+    (*env)->CallStaticObjectMethod(env, mActivityClass, midSuspendScreenSaver, suspend);
 }
 
 ANativeWindow* Android_JNI_GetNativeWindow(void)

src/core/android/SDL_android.h

@@ -68,6 +68,8 @@ int Android_JNI_GetPowerInfo(int* plugged, int* charged, int* battery, int* seco
 /* Joystick support */
 void Android_JNI_PollInputDevices();
 
+/* Video */
+void Android_JNI_SuspendScreenSaver(SDL_bool suspend);
 
 /* Touch support */
 int Android_JNI_GetTouchDeviceIds(int **ids);

src/video/android/SDL_androidvideo.c

@@ -75,6 +75,12 @@ Android_Available(void)
     return 1;
 }
 
+static void
+Android_SuspendScreenSaver(_THIS)
+{
+    Android_JNI_SuspendScreenSaver(_this->suspend_screensaver);
+}
+
 static void
 Android_DeleteDevice(SDL_VideoDevice * device)
 {
@@ -126,6 +132,9 @@ Android_CreateDevice(int devindex)
     device->GL_SwapWindow = Android_GLES_SwapWindow;
     device->GL_DeleteContext = Android_GLES_DeleteContext;
 
+    /* Screensaver */
+    device->SuspendScreenSaver = Android_SuspendScreenSaver;
+
     /* Text input */
     device->StartTextInput = Android_StartTextInput;
     device->StopTextInput = Android_StopTextInput;