(Mostly) updated verve implementation.

Engine/modules/Verve/GUI/VFadeControl.cpp

@@ -0,0 +1,114 @@
+//-----------------------------------------------------------------------------
+// Verve
+// Copyright (C) 2014 - Violent Tulip
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to
+// deal in the Software without restriction, including without limitation the
+// rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+// sell copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+// IN THE SOFTWARE.
+//-----------------------------------------------------------------------------
+#include "Verve/GUI/VFadeControl.h"
+
+#include "console/consoleTypes.h"
+#include "gfx/gfxDrawUtil.h"
+#include "math/mMathFn.h"
+
+//-----------------------------------------------------------------------------
+IMPLEMENT_CONOBJECT( VFadeControl );
+//-----------------------------------------------------------------------------
+
+VFadeControl::VFadeControl( void ) : 
+        mActive( false ),
+        mFadeType( k_TypeInvalid ),
+        mElapsedTime( 0 ),
+        mDuration( 1000 ),
+        mLastTime( 0 )
+{
+    // Void.
+}
+
+//-----------------------------------------------------------------------------
+//
+// Render Methods.
+//
+//-----------------------------------------------------------------------------
+
+void VFadeControl::onRender( Point2I pOffset, const RectI &pUpdateRect )
+{
+    Parent::onRender( pOffset, pUpdateRect );
+
+    if ( mFadeType == k_TypeInvalid )
+    {
+        // Invalid Fade State.
+        return;
+    }
+
+    // Fetch Time.
+    const U32 time  = Platform::getRealMilliseconds();
+    // Fetch Delta.
+    const U32 delta = ( time - mLastTime );
+    // Store Time.
+    mLastTime       = time;
+
+    if ( mActive )
+    {
+        // Update Elapsed Time.
+        mElapsedTime += delta;
+    }
+
+    F32 alpha = 1.f - mClampF( F32( mElapsedTime ) / F32( mDuration ), 0.f, 1.f );
+
+    if ( mFadeType == k_TypeOut )
+    {
+        // Flip.
+        alpha = 1.f - alpha;
+    }
+
+    if ( alpha > 0.f )
+    {
+        // Render.
+        GFX->getDrawUtil()->drawRectFill( pOffset, pOffset + getExtent(), ColorF( 0, 0, 0, alpha ) );
+    }
+
+    if ( mElapsedTime >= mDuration )
+    {
+        // Stop.
+        mActive = false;
+    }
+}
+
+//-----------------------------------------------------------------------------
+//
+// Control Methods.
+//
+//-----------------------------------------------------------------------------
+
+void VFadeControl::start( eFadeType pType, S32 pDuration )
+{
+    mActive      = true;
+
+    mFadeType    = pType;
+
+    mElapsedTime = 0;
+    mDuration    = pDuration;
+
+    mLastTime    = Platform::getRealMilliseconds();
+}
+
+void VFadeControl::pause( void )
+{
+    mActive = false;
+}