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Diffstat (limited to 'slideshow/source/engine/transitions/slidechangebase.hxx')
| -rw-r--r-- | slideshow/source/engine/transitions/slidechangebase.hxx | 203 |
1 files changed, 203 insertions, 0 deletions
diff --git a/slideshow/source/engine/transitions/slidechangebase.hxx b/slideshow/source/engine/transitions/slidechangebase.hxx new file mode 100644 index 000000000..e80145df6 --- /dev/null +++ b/slideshow/source/engine/transitions/slidechangebase.hxx @@ -0,0 +1,203 @@ +/* -*- 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::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 presentation::internal + +#endif // INCLUDED_SLIDESHOW_SOURCE_ENGINE_TRANSITIONS_SLIDECHANGEBASE_HXX + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |