1 files changed, 59 insertions, 0 deletions
diff --git a/slideshow/source/engine/activities/continuouskeytimeactivitybase.cxx b/slideshow/source/engine/activities/continuouskeytimeactivitybase.cxx
new file mode 100644
index 000000000..db25d2dd4
--- /dev/null
+++ b/slideshow/source/engine/activities/continuouskeytimeactivitybase.cxx
@@ -0,0 +1,59 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+
+#include <tools/diagnose_ex.h>
+
+#include "continuouskeytimeactivitybase.hxx"
+
+#include <tuple>
+
+namespace slideshow::internal
+{
+        ContinuousKeyTimeActivityBase::ContinuousKeyTimeActivityBase( const ActivityParameters& rParms ) :
+            SimpleContinuousActivityBase( rParms ),
+            maLerper( std::vector(rParms.maDiscreteTimes) )
+        {
+            ENSURE_OR_THROW( rParms.maDiscreteTimes.size() > 1,
+                              "ContinuousKeyTimeActivityBase::ContinuousKeyTimeActivityBase(): key times vector must have two entries or more" );
+            ENSURE_OR_THROW( rParms.maDiscreteTimes.front() == 0.0,
+                              "ContinuousKeyTimeActivityBase::ContinuousKeyTimeActivityBase(): key times vector first entry must be zero" );
+            ENSURE_OR_THROW( rParms.maDiscreteTimes.back() <= 1.0,
+                              "ContinuousKeyTimeActivityBase::ContinuousKeyTimeActivityBase(): key times vector last entry must be less or equal 1" );
+        }
+
+        void ContinuousKeyTimeActivityBase::simplePerform( double       nSimpleTime,
+                                                           sal_uInt32   nRepeatCount ) const
+        {
+            // calc simple time from global time - sweep through the
+            // array multiple times for repeated animations (according to
+            // SMIL spec).
+            double fAlpha( calcAcceleratedTime( nSimpleTime ) );
+            std::ptrdiff_t nIndex;
+
+            std::tie(nIndex,fAlpha) = maLerper.lerp(fAlpha);
+
+            perform(
+                nIndex,
+                fAlpha,
+                nRepeatCount );
+        }
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */