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, 5 insertions, 0 deletions

diff --git a/src/gui/widgets/checkbox.h b/src/gui/widgets/checkbox.h
index 7a7c8674..a65a5196 100644
--- a/src/gui/widgets/checkbox.h
+++ b/src/gui/widgets/checkbox.h
@@ -51,6 +51,11 @@ class CheckBox : public gcn::CheckBox
         void draw(gcn::Graphics* graphics);
 
         /**
+         * Update the alpha value to the checkbox components.
+         */
+        void updateAlpha();
+
+        /**
          * Draws the check box, not the caption.
          */
         void drawBox(gcn::Graphics* graphics);