Added a minimum alpha opacity value handle in SkinLoader and made use of it.

Part 1 of 3 for Mantis #847
Only a few controls follow minimum opacity value at login stage.
Part 2 will make all other controls do the same.
Part 3 will try to set default gui opacity value as a constant.

1 files changed, 20 insertions, 2 deletions

diff --git a/src/gui/skin.h b/src/gui/skin.h
index c56072d3..5f612c26 100644
--- a/src/gui/skin.h
+++ b/src/gui/skin.h
@@ -82,7 +82,7 @@ class Skin
         /**
          * Updates the alpha value of the skin
          */
-        void updateAlpha();
+        void updateAlpha(float minimumOpacityAllowed = 0.0f);
 
         int instances;
 
@@ -95,7 +95,7 @@ class Skin
         Image *mStickyImageDown;   /**< Sticky Button Image */
 };
 
-class SkinLoader 
+class SkinLoader
 {
     public:
         static SkinLoader *instance();
@@ -112,6 +112,18 @@ class SkinLoader
          */
         void updateAlpha();
 
+        /**
+         * Get the minimum opacity allowed to skins.
+         */
+        float getMinimumOpacity()
+        { return mMinimumOpacity; }
+
+        /**
+         * Set the minimum opacity allowed to skins.
+         * Set a negative value to free the minimum allowed.
+         */
+        void setMinimumOpacity(float minimumOpacity);
+
     private:
         SkinLoader();
         ~SkinLoader();
@@ -130,6 +142,12 @@ class SkinLoader
         ConfigListener *mSkinConfigListener;
 
         static SkinLoader *mInstance;
+
+        /**
+         * Tells if the current skins opacity
+         * should not get less than the given value
+         */
+        float mMinimumOpacity;
 };
 
 #endif