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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 .
+ */
+
+#ifndef INCLUDED_SLIDESHOW_SOURCE_ENGINE_TRANSITIONS_SLIDECHANGEBASE_HXX
+#define INCLUDED_SLIDESHOW_SOURCE_ENGINE_TRANSITIONS_SLIDECHANGEBASE_HXX
+
+#include <unoview.hxx>
+#include <vieweventhandler.hxx>
+#include <numberanimation.hxx>
+#include <slide.hxx>
+#include <screenupdater.hxx>
+#include <soundplayer.hxx>
+
+#include <memory>
+#include <optional>
+
+namespace cppcanvas
+{
+ class Canvas;
+ class CustomSprite;
+}
+
+namespace slideshow {
+namespace internal {
+
+/** Base class for all slide change effects.
+
+ This class provides the basic sprite and view handling
+ functionality. Derived classes should normally only need to
+ implement the perform() method.
+*/
+class SlideChangeBase : public ViewEventHandler,
+ public NumberAnimation
+{
+public:
+ SlideChangeBase(const SlideChangeBase&) = delete;
+ SlideChangeBase& operator=(const SlideChangeBase&) = delete;
+
+ // NumberAnimation
+ virtual bool operator()( double x ) override;
+ virtual double getUnderlyingValue() const override;
+
+ // Animation
+ virtual void prefetch() override;
+ virtual void start( const AnimatableShapeSharedPtr&,
+ const ShapeAttributeLayerSharedPtr& ) override;
+ virtual void end() override;
+
+ // ViewEventHandler
+ virtual void viewAdded( const UnoViewSharedPtr& rView ) override;
+ virtual void viewRemoved( const UnoViewSharedPtr& rView ) override;
+ virtual void viewChanged( const UnoViewSharedPtr& rView ) override;
+ virtual void viewsChanged() override;
+
+protected:
+ /** Create a new SlideChanger, for the given leaving and
+ entering slides.
+ */
+ SlideChangeBase(
+ ::std::optional<SlideSharedPtr> const & leavingSlide,
+ const SlideSharedPtr& pEnteringSlide,
+ const SoundPlayerSharedPtr& pSoundPlayer,
+ const UnoViewContainer& rViewContainer,
+ ScreenUpdater& rScreenUpdater,
+ EventMultiplexer& rEventMultiplexer,
+ bool bCreateLeavingSprites = true,
+ bool bCreateEnteringSprites = true );
+
+ /// Info on a per-view basis
+ struct ViewEntry
+ {
+ explicit ViewEntry( const UnoViewSharedPtr& rView ) :
+ mpView( rView )
+ {
+ }
+
+ /// The view this entry is for
+ UnoViewSharedPtr mpView;
+ /// outgoing slide sprite
+ std::shared_ptr<cppcanvas::CustomSprite> mpOutSprite;
+ /// incoming slide sprite
+ std::shared_ptr<cppcanvas::CustomSprite> mpInSprite;
+ /// outgoing slide bitmap
+ mutable SlideBitmapSharedPtr mpLeavingBitmap;
+ /// incoming slide bitmap
+ mutable SlideBitmapSharedPtr mpEnteringBitmap;
+
+ // for algo access
+ const UnoViewSharedPtr& getView() const { return mpView; }
+ };
+
+ typedef ::std::vector<ViewEntry> ViewsVecT;
+
+ ViewsVecT::const_iterator beginViews() { return maViewData.begin(); }
+ ViewsVecT::const_iterator endViews() { return maViewData.end(); }
+
+ SlideBitmapSharedPtr getLeavingBitmap( const ViewEntry& rViewEntry ) const;
+ SlideBitmapSharedPtr getEnteringBitmap( const ViewEntry& rViewEntry ) const;
+
+ SlideBitmapSharedPtr createBitmap( const UnoViewSharedPtr& pView,
+ const std::optional<SlideSharedPtr>& rSlide_ ) const;
+
+ ::basegfx::B2ISize getEnteringSlideSizePixel( const UnoViewSharedPtr& pView ) const;
+
+ static void renderBitmap( SlideBitmapSharedPtr const& pSlideBitmap,
+ cppcanvas::CanvasSharedPtr const& pCanvas );
+
+ /** Called on derived classes to perform actions before first run.
+
+ This typically involves rendering of the initial slide content.
+
+ @param rViewEntry the view entry
+
+ @param rDestinationCanvas the canvas to render on
+ */
+ virtual void prepareForRun(
+ const ViewEntry& rViewEntry,
+ const cppcanvas::CanvasSharedPtr& rDestinationCanvas );
+
+ /** Called on derived classes to implement actual slide change.
+
+ This method is called with the sprite of the slide coming 'in'
+
+ @param rSprite
+ Current sprite to operate on. This is the sprite of the
+ 'entering' slide
+
+ @param t
+ Current parameter value
+ */
+ virtual void performIn(
+ const cppcanvas::CustomSpriteSharedPtr& rSprite,
+ const ViewEntry& rViewEntry,
+ const cppcanvas::CanvasSharedPtr& rDestinationCanvas,
+ double t );
+
+ /** Called on derived classes to implement actual slide change.
+
+ This method is called with the sprite of the slide moving 'out'
+
+ @param rSprite
+ Current sprite to operate on. This is the sprite of the
+ 'leaving' slide
+
+ @param t
+ Current parameter value
+ */
+ virtual void performOut(
+ const cppcanvas::CustomSpriteSharedPtr& rSprite,
+ const ViewEntry& rViewEntry,
+ const cppcanvas::CanvasSharedPtr& rDestinationCanvas,
+ double t );
+
+ ScreenUpdater& getScreenUpdater() const { return mrScreenUpdater; }
+
+private:
+
+ cppcanvas::CustomSpriteSharedPtr createSprite(
+ UnoViewSharedPtr const & pView,
+ ::basegfx::B2DSize const & rSpriteSize,
+ double nPrio ) const;
+
+ void addSprites( ViewEntry& rEntry );
+ static void clearViewEntry( ViewEntry& rEntry );
+
+ SoundPlayerSharedPtr mpSoundPlayer;
+
+ EventMultiplexer& mrEventMultiplexer;
+ ScreenUpdater& mrScreenUpdater;
+
+ ::std::optional<SlideSharedPtr> maLeavingSlide;
+ SlideSharedPtr mpEnteringSlide;
+
+ ViewsVecT maViewData;
+ const UnoViewContainer& mrViewContainer;
+
+ const bool mbCreateLeavingSprites;
+ const bool mbCreateEnteringSprites;
+ bool mbSpritesVisible;
+ bool mbFinished;
+ bool mbPrefetched;
+};
+
+} // namespace internal
+} // namespace presentation
+
+#endif // INCLUDED_SLIDESHOW_SOURCE_ENGINE_TRANSITIONS_SLIDECHANGEBASE_HXX
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */