Use MyGUI frame events for ScreenFader

apps/openmw/mwgui/screenfader.cpp

@@ -2,6 +2,7 @@
 
 #include <MyGUI_RenderManager.h>
 #include <MyGUI_ImageBox.h>
+#include <MyGUI_Gui.h>
 
 namespace MWGui
 {
@@ -80,6 +81,8 @@ namespace MWGui
         , mFactor(1.f)
         , mRepeat(false)
     {
+        MyGUI::Gui::getInstance().eventFrameStart += MyGUI::newDelegate(this, &ScreenFader::onFrameStart);
+
         mMainWidget->setSize(MyGUI::RenderManager::getInstance().getViewSize());
 
         MyGUI::ImageBox* imageBox = mMainWidget->castType<MyGUI::ImageBox>(false);
@@ -94,7 +97,12 @@ namespace MWGui
         }
     }
 
-    void ScreenFader::update(float dt)
+    ScreenFader::~ScreenFader()
+    {
+        MyGUI::Gui::getInstance().eventFrameStart -= MyGUI::newDelegate(this, &ScreenFader::onFrameStart);
+    }
+
+    void ScreenFader::onFrameStart(float dt)
     {
         if (!mQueue.empty())
         {

apps/openmw/mwgui/screenfader.hpp

@@ -36,8 +36,9 @@ namespace MWGui
     {
     public:
         ScreenFader(const std::string & texturePath, const std::string& layout = "openmw_screen_fader.layout", const MyGUI::FloatCoord& texCoordOverride = MyGUI::FloatCoord(0,0,1,1));
+        ~ScreenFader();
 
-        void update(float dt);
+        void onFrameStart(float dt);
 
         void fadeIn(const float time, float delay=0);
         void fadeOut(const float time, float delay=0);

apps/openmw/mwgui/windowmanagerimp.cpp

@@ -894,12 +894,6 @@ namespace MWGui
 
         mHud->onFrame(frameDuration);
 
-        if (mWerewolfFader)
-            mWerewolfFader->update(frameDuration);
-        mBlindnessFader->update(frameDuration);
-        mHitFader->update(frameDuration);
-        mScreenFader->update(frameDuration);
-
         mDebugWindow->onFrame(frameDuration);
 
         if (mCharGen)