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+/* -*- 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 .
+ */
+
+#pragma once
+
+#include <drawinglayer/drawinglayerdllapi.h>
+
+#include <drawinglayer/primitive2d/groupprimitive2d.hxx>
+#include <basegfx/matrix/b2dhommatrixtools.hxx>
+#include <memory>
+
+// predefines
+namespace drawinglayer::animation
+{
+class AnimationEntry;
+}
+
+namespace basegfx
+{
+class B2DHomMatrix;
+}
+
+namespace drawinglayer::primitive2d
+{
+/** AnimatedSwitchPrimitive2D class
+
+ This is the basic class for simple, animated primitives. The basic idea
+ is to have an animation definition (AnimationEntry) who's basic
+ functionality is to return a state value for any given animation time in
+ the range of [0.0 .. 1.0]. Depending on the state, the decomposition
+ calculates an index, which of the members of the child vector is to
+ be visualized.
+
+ An example: For blinking, the Child vector should exist of two entries;
+ for values of [0.0 .. 0.5] the first, else the last entry will be used.
+ This mechanism is not limited to two entries, though.
+ */
+class DRAWINGLAYER_DLLPUBLIC AnimatedSwitchPrimitive2D : public GroupPrimitive2D
+{
+private:
+ /**
+ The animation definition which allows translation of a point in time
+ to an animation state [0.0 .. 1.0]. This member contains a cloned
+ definition and is owned by this implementation.
+ */
+ std::unique_ptr<animation::AnimationEntry> mpAnimationEntry;
+
+ /** flag if this is a text or graphic animation. Necessary since SdrViews need to differentiate
+ between both types if they are on/off
+ */
+ bool mbIsTextAnimation : 1;
+
+protected:
+ /** write access right for classes deriving from this who want to do special
+ things (e.g. optimization, buffering).
+ Caution: This is an exception from the read-only, non-modifiable paradigm
+ for primitives, so special preparations may be needed. Usually should
+ only be used for initialization (e.g. in a derived constructor)
+ */
+ void setAnimationEntry(const animation::AnimationEntry& rNew);
+
+public:
+ /// constructor
+ AnimatedSwitchPrimitive2D(const animation::AnimationEntry& rAnimationEntry,
+ Primitive2DContainer&& aChildren, bool bIsTextAnimation);
+
+ /// destructor - needed due to mpAnimationEntry
+ virtual ~AnimatedSwitchPrimitive2D() override;
+
+ /// data read access
+ const animation::AnimationEntry& getAnimationEntry() const { return *mpAnimationEntry; }
+ bool isTextAnimation() const { return mbIsTextAnimation; }
+ bool isGraphicAnimation() const { return !isTextAnimation(); }
+
+ /// compare operator
+ virtual bool operator==(const BasePrimitive2D& rPrimitive) const override;
+
+ /// provide unique ID
+ virtual sal_uInt32 getPrimitive2DID() const override;
+
+ /** Override getDecomposition() here since the decompose
+ depends on the point in time, so the default implementation is
+ not useful here, it needs to be handled locally
+ */
+ virtual void
+ get2DDecomposition(Primitive2DDecompositionVisitor& rVisitor,
+ const geometry::ViewInformation2D& rViewInformation) const override;
+};
+
+/** AnimatedBlinkPrimitive2D class
+
+ Basically the same mechanism as in AnimatedSwitchPrimitive2D, but the
+ decomposition is specialized in delivering the children in the
+ range [0.0.. 0.5] and an empty sequence else
+ */
+class DRAWINGLAYER_DLLPUBLIC AnimatedBlinkPrimitive2D final : public AnimatedSwitchPrimitive2D
+{
+public:
+ /// constructor
+ AnimatedBlinkPrimitive2D(const animation::AnimationEntry& rAnimationEntry,
+ Primitive2DContainer&& aChildren);
+
+ /// create local decomposition
+ virtual void
+ get2DDecomposition(Primitive2DDecompositionVisitor& rVisitor,
+ const geometry::ViewInformation2D& rViewInformation) const override;
+
+ /// provide unique ID
+ virtual sal_uInt32 getPrimitive2DID() const override;
+};
+
+/** AnimatedInterpolatePrimitive2D class
+
+ Specialized on multi-step animations based on matrix transformations. The
+ Child sequence will be embedded in a matrix transformation. That transformation
+ will be linearly combined from the decomposed values and the animation value
+ to allow a smooth animation.
+ */
+class DRAWINGLAYER_DLLPUBLIC AnimatedInterpolatePrimitive2D final : public AnimatedSwitchPrimitive2D
+{
+private:
+ /// the transformations
+ std::vector<basegfx::utils::B2DHomMatrixBufferedDecompose> maMatrixStack;
+
+public:
+ /// constructor
+ AnimatedInterpolatePrimitive2D(const std::vector<basegfx::B2DHomMatrix>& rmMatrixStack,
+ const animation::AnimationEntry& rAnimationEntry,
+ Primitive2DContainer&& aChildren);
+
+ /// create local decomposition
+ virtual void
+ get2DDecomposition(Primitive2DDecompositionVisitor& rVisitor,
+ const geometry::ViewInformation2D& rViewInformation) const override;
+
+ /// provide unique ID
+ virtual sal_uInt32 getPrimitive2DID() const override;
+};
+
+} // end of namespace drawinglayer::primitive2d
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */