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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::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: */
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