From ac3552ff9153e82ea67dda6bb811581883ccf519 Mon Sep 17 00:00:00 2001
From: emb <>
Date: Mon, 12 Jan 2015 23:56:19 -0600
Subject: [PATCH] Added background-alpha tweening.

---
 RetroFE/Source/Graphics/Animate/Tween.cpp           | 1 +
 RetroFE/Source/Graphics/Animate/TweenTypes.h        | 3 ++-
 RetroFE/Source/Graphics/Component/Component.cpp     | 4 ++++
 RetroFE/Source/Graphics/Component/ScrollingList.cpp | 2 ++
 4 files changed, 9 insertions(+), 1 deletion(-)

diff --git a/RetroFE/Source/Graphics/Animate/Tween.cpp b/RetroFE/Source/Graphics/Animate/Tween.cpp
index 0cff078..6f3e52f 100644
--- a/RetroFE/Source/Graphics/Animate/Tween.cpp
+++ b/RetroFE/Source/Graphics/Animate/Tween.cpp
@@ -55,6 +55,7 @@ bool Tween::GetTweenProperty(std::string name, TweenProperty &property)
         TweenPropertyMap["xoffset"] = TWEEN_PROPERTY_X_OFFSET;
         TweenPropertyMap["yoffset"] = TWEEN_PROPERTY_Y_OFFSET;
         TweenPropertyMap["fontSize"] = TWEEN_PROPERTY_FONT_SIZE;
+        TweenPropertyMap["backgroundalpha"] = TWEEN_PROPERTY_BACKGROUND_ALPHA;
     }
 
     std::transform(name.begin(), name.end(), name.begin(), ::tolower);
diff --git a/RetroFE/Source/Graphics/Animate/TweenTypes.h b/RetroFE/Source/Graphics/Animate/TweenTypes.h
index 074543a..87f0360 100644
--- a/RetroFE/Source/Graphics/Animate/TweenTypes.h
+++ b/RetroFE/Source/Graphics/Animate/TweenTypes.h
@@ -41,5 +41,6 @@ enum TweenProperty
     TWEEN_PROPERTY_Y_ORIGIN,
     TWEEN_PROPERTY_X_OFFSET,
     TWEEN_PROPERTY_Y_OFFSET,
-    TWEEN_PROPERTY_FONT_SIZE
+    TWEEN_PROPERTY_FONT_SIZE,
+    TWEEN_PROPERTY_BACKGROUND_ALPHA,
 };
diff --git a/RetroFE/Source/Graphics/Component/Component.cpp b/RetroFE/Source/Graphics/Component/Component.cpp
index dfd3637..879cdbe 100644
--- a/RetroFE/Source/Graphics/Component/Component.cpp
+++ b/RetroFE/Source/Graphics/Component/Component.cpp
@@ -314,6 +314,10 @@ bool Component::Animate(bool loop)
             case TWEEN_PROPERTY_FONT_SIZE:
                 GetBaseViewInfo()->SetFontSize(value);
                 break;
+
+            case TWEEN_PROPERTY_BACKGROUND_ALPHA:
+                GetBaseViewInfo()->SetBackgroundAlpha(value);
+                break;
             }
         }
 
diff --git a/RetroFE/Source/Graphics/Component/ScrollingList.cpp b/RetroFE/Source/Graphics/Component/ScrollingList.cpp
index 2d4110a..24e27fe 100644
--- a/RetroFE/Source/Graphics/Component/ScrollingList.cpp
+++ b/RetroFE/Source/Graphics/Component/ScrollingList.cpp
@@ -334,6 +334,7 @@ void ScrollingList::Update(float dt)
                 currentViewInfo->SetImageWidth(c->GetBaseViewInfo()->GetImageWidth());
                 nextViewInfo->SetImageHeight(c->GetBaseViewInfo()->GetImageHeight());
                 nextViewInfo->SetImageWidth(c->GetBaseViewInfo()->GetImageWidth());
+                nextViewInfo->SetBackgroundAlpha(c->GetBaseViewInfo()->GetBackgroundAlpha());
 
                 //todo: 30 is a magic number
                 ViewInfo *spriteViewInfo = c->GetBaseViewInfo();
@@ -349,6 +350,7 @@ void ScrollingList::Update(float dt)
                 spriteViewInfo->SetAlpha(Tween::AnimateSingle(LINEAR, currentViewInfo->GetAlpha(), nextViewInfo->GetAlpha(), scrollPeriod, CurrentAnimateTime));
                 spriteViewInfo->SetAngle(Tween::AnimateSingle(LINEAR, currentViewInfo->GetAngle(), nextViewInfo->GetAngle(), scrollPeriod, CurrentAnimateTime));
                 spriteViewInfo->SetFontSize(Tween::AnimateSingle(LINEAR, currentViewInfo->GetFontSize(), nextViewInfo->GetFontSize(), scrollPeriod, CurrentAnimateTime));
+                spriteViewInfo->SetBackgroundAlpha(Tween::AnimateSingle(LINEAR, currentViewInfo->GetBackgroundAlpha(), nextViewInfo->GetBackgroundAlpha(), scrollPeriod, CurrentAnimateTime));
                 c->Update(dt);
 
             }