adding event to notify the plugin when it is on/off screen.

3 files changed, 23 insertions, 1 deletions

diff --git a/WebKit/android/plugins/PluginWidgetAndroid.cpp b/WebKit/android/plugins/PluginWidgetAndroid.cpp
index 5ee3e0f..113a3bc 100644
--- a/WebKit/android/plugins/PluginWidgetAndroid.cpp
+++ b/WebKit/android/plugins/PluginWidgetAndroid.cpp
@@ -53,6 +53,7 @@ PluginWidgetAndroid::PluginWidgetAndroid(WebCore::PluginView* view)
     m_pluginBounds.setEmpty();
     m_hasFocus = false;
     m_isFullScreen = false;
+    m_visible = true;
     m_zoomLevel = 0;
     m_embeddedView = NULL;
 }
@@ -283,6 +284,18 @@ void PluginWidgetAndroid::setVisibleScreen(const ANPRectI& visibleDocRect, float
 
     if (oldScreenW != newScreenW || oldScreenH != newScreenH)
         computeVisibleFrameRect();
+
+    bool visible = SkIRect::Intersects(m_visibleDocRect, m_pluginBounds);
+    if(m_visible != visible) {
+        // change the visibility
+        m_visible = visible;
+        // send the event
+        ANPEvent event;
+        SkANP::InitEvent(&event, kLifecycle_ANPEventType);
+        event.data.lifecycle.action = visible ? kOnScreen_ANPLifecycleAction
+                                              : kOffScreen_ANPLifecycleAction;
+        sendEvent(event);
+    }
 }
 
 void PluginWidgetAndroid::setVisibleRects(const ANPRectI rects[], int32_t count) {
diff --git a/WebKit/android/plugins/PluginWidgetAndroid.h b/WebKit/android/plugins/PluginWidgetAndroid.h
index c7cccd1..93ad4a8 100644
--- a/WebKit/android/plugins/PluginWidgetAndroid.h
+++ b/WebKit/android/plugins/PluginWidgetAndroid.h
@@ -156,6 +156,7 @@ private:
     SkIRect                 m_requestedFrameRect;
     bool                    m_hasFocus;
     bool                    m_isFullScreen;
+    bool                    m_visible;
     float                   m_zoomLevel;
     jobject                 m_embeddedView;
 
diff --git a/WebKit/android/plugins/android_npapi.h b/WebKit/android/plugins/android_npapi.h
index 10f7ac9..4173528 100644
--- a/WebKit/android/plugins/android_npapi.h
+++ b/WebKit/android/plugins/android_npapi.h
@@ -847,7 +847,7 @@ enum ANPLifecycleActions {
     /** The web view containing this plugin has been paused.  See documentation
         on the android activity lifecycle for more information.
      */
-    kPause_ANPLifecycleAction            = 0,
+    kPause_ANPLifecycleAction           = 0,
     /** The web view containing this plugin has been resumed. See documentation
         on the android activity lifecycle for more information.
      */
@@ -879,6 +879,14 @@ enum ANPLifecycleActions {
         its original coordinates.
      */
     kExitFullScreen_ANPLifecycleAction  = 7,
+    /** The plugin is visible to the user on the screen. This event will always
+        occur after a kOffScreen_ANPLifecycleAction event.
+     */
+    kOnScreen_ANPLifecycleAction        = 8,
+    /** The plugin is no longer visible to the user on the screen. This event
+        will always occur prior to an kOnScreen_ANPLifecycleAction event.
+     */
+    kOffScreen_ANPLifecycleAction       = 9,
 };
 typedef uint32_t ANPLifecycleAction;