Adding upstream version 1:7.0.4.upstream/1%7.0.4upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 1110 insertions, 0 deletions

diff --git a/slideshow/source/engine/transitions/slidetransitionfactory.cxx b/slideshow/source/engine/transitions/slidetransitionfactory.cxx
new file mode 100644
index 000000000..3ec2c8089
--- /dev/null
+++ b/slideshow/source/engine/transitions/slidetransitionfactory.cxx
@@ -0,0 +1,1110 @@
+/* -*- 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 <sal/log.hxx>
+
+#include <basegfx/matrix/b2dhommatrix.hxx>
+
+#include <cppcanvas/customsprite.hxx>
+
+#include <com/sun/star/animations/TransitionType.hpp>
+#include <com/sun/star/animations/TransitionSubType.hpp>
+
+#include "slidechangebase.hxx"
+#include <transitionfactory.hxx>
+#include "transitionfactorytab.hxx"
+#include "parametricpolypolygonfactory.hxx"
+#include "clippingfunctor.hxx"
+#include "combtransition.hxx"
+#include <tools.hxx>
+#include <memory>
+
+
+/***************************************************
+ ***                                             ***
+ ***          Slide Transition Effects           ***
+ ***                                             ***
+ ***************************************************/
+
+using namespace com::sun::star;
+
+namespace slideshow::internal {
+
+namespace {
+
+// helper methods
+// =============================================
+
+void fillPage( const ::cppcanvas::CanvasSharedPtr& rDestinationCanvas,
+               const ::basegfx::B2DSize&           rPageSizePixel,
+               const RGBColor&                     rFillColor )
+{
+    // need to render without any transformation (we
+    // assume rPageSizePixel to represent device units)
+    const ::cppcanvas::CanvasSharedPtr pDevicePixelCanvas(
+        rDestinationCanvas->clone() );
+    pDevicePixelCanvas->setTransformation( ::basegfx::B2DHomMatrix() );
+
+    // TODO(F2): Properly respect clip here.
+    // Might have to be transformed, too.
+    const ::basegfx::B2DHomMatrix aViewTransform(
+        rDestinationCanvas->getTransformation() );
+    const ::basegfx::B2DPoint aOutputPosPixel(
+        aViewTransform * ::basegfx::B2DPoint() );
+
+    fillRect( pDevicePixelCanvas,
+              ::basegfx::B2DRectangle(
+                  aOutputPosPixel.getX(),
+                  aOutputPosPixel.getY(),
+                  aOutputPosPixel.getX() + rPageSizePixel.getX(),
+                  aOutputPosPixel.getY() + rPageSizePixel.getY() ),
+              rFillColor.getIntegerColor() );
+}
+
+class PluginSlideChange: public SlideChangeBase
+{
+    struct TransitionViewPair {
+    uno::Reference<presentation::XTransition> mxTransition;
+    UnoViewSharedPtr mpView;
+
+    TransitionViewPair( uno::Reference<presentation::XTransition> const & xTransition, const UnoViewSharedPtr& rView )
+         : mxTransition(xTransition), mpView(rView)
+    {
+    }
+
+    ~TransitionViewPair()
+    {
+        mxTransition.clear();
+        mpView.reset();
+    }
+
+    void update( double t )
+    {
+        mxTransition->update( t );
+    }
+    };
+
+public:
+    /** Create a new SlideChanger, for the given leaving and
+        entering slide bitmaps, which uses super secret OpenGL
+        stuff.
+    */
+    PluginSlideChange( sal_Int16                                nTransitionType,
+                       sal_Int16                                nTransitionSubType,
+                       const RGBColor&                          rTransitionFadeColor,
+                       std::optional<SlideSharedPtr> const&   leavingSlide_,
+                       const SlideSharedPtr&                    pEnteringSlide,
+                       const UnoViewContainer&                  rViewContainer,
+                       ScreenUpdater&                           rScreenUpdater,
+                       const uno::Reference<
+                             presentation::XTransitionFactory>& xFactory,
+                       const SoundPlayerSharedPtr&              pSoundPlayer,
+                       EventMultiplexer&                        rEventMultiplexer) :
+        SlideChangeBase( leavingSlide_,
+                         pEnteringSlide,
+                         pSoundPlayer,
+                         rViewContainer,
+                         rScreenUpdater,
+                         rEventMultiplexer ),
+        maTransitions(),
+        mbSuccess( false ),
+        mnTransitionType( nTransitionType ),
+        mnTransitionSubType( nTransitionSubType ),
+        mnTransitionFadeColor( rTransitionFadeColor ),
+        mxFactory( xFactory )
+    {
+        // create one transition per view
+        for( const auto& rView : rViewContainer )
+        {
+            if( !addTransition( rView ) )
+                return;
+
+            ENSURE_OR_THROW(maTransitions.back() && maTransitions.back()->mxTransition.is(),
+                            "Failed to create plugin transition");
+        }
+        mbSuccess = true;
+    }
+
+    virtual ~PluginSlideChange() override
+    {
+        mxFactory.clear();
+    }
+
+    bool addTransition( const UnoViewSharedPtr& rView )
+    {
+        uno::Reference<presentation::XTransition> rTransition = mxFactory->createTransition(
+            mnTransitionType,
+            mnTransitionSubType,
+            RGBAColor2UnoColor( mnTransitionFadeColor.getIntegerColor()),
+            rView->getUnoView(),
+            getLeavingBitmap(ViewEntry(rView))->getXBitmap(),
+            getEnteringBitmap(ViewEntry(rView))->getXBitmap() );
+
+        if( rTransition.is() )
+            maTransitions.emplace_back( new TransitionViewPair( rTransition, rView ) );
+        else
+            return false;
+
+        return true;
+    }
+
+    virtual bool operator()( double t ) override
+    {
+        for( const auto& pTransition : maTransitions )
+            pTransition->update( t );
+        return true;
+    }
+
+    bool Success()
+    {
+        return mbSuccess;
+    }
+
+    // ViewEventHandler
+    virtual void viewAdded( const UnoViewSharedPtr& rView ) override
+    {
+        SAL_INFO("slideshow", "PluginSlideChange viewAdded");
+        SlideChangeBase::viewAdded( rView );
+
+        for( const auto& pCurrView : maTransitions )
+        {
+            if( pCurrView->mpView == rView )
+                return;
+        }
+
+        SAL_INFO("slideshow", "need to be added" );
+        addTransition( rView );
+    }
+
+    virtual void viewRemoved( const UnoViewSharedPtr& rView ) override
+    {
+        SAL_INFO("slideshow", "PluginSlideChange viewRemoved");
+        SlideChangeBase::viewRemoved( rView );
+
+        auto aIter = std::find_if(maTransitions.begin(), maTransitions.end(),
+            [&rView](const std::unique_ptr<TransitionViewPair>& rxTransition) { return rxTransition->mpView == rView; });
+        if (aIter != maTransitions.end())
+        {
+            SAL_INFO("slideshow", "view removed" );
+            maTransitions.erase( aIter );
+        }
+    }
+
+    virtual void viewChanged( const UnoViewSharedPtr& rView ) override
+    {
+        SAL_INFO("slideshow", "PluginSlideChange viewChanged");
+        SlideChangeBase::viewChanged( rView );
+
+        for( const auto& pCurrView : maTransitions )
+        {
+            if( pCurrView->mpView == rView )
+            {
+                SAL_INFO("slideshow", "view changed" );
+                pCurrView->mxTransition->viewChanged( rView->getUnoView(),
+                                                      getLeavingBitmap(ViewEntry(rView))->getXBitmap(),
+                                                      getEnteringBitmap(ViewEntry(rView))->getXBitmap() );
+            }
+            else
+                SAL_INFO("slideshow", "view did not change" );
+        }
+    }
+
+    virtual void viewsChanged() override
+    {
+        SAL_INFO("slideshow", "PluginSlideChange viewsChanged");
+        SlideChangeBase::viewsChanged();
+
+        for( const auto& pCurrView : maTransitions )
+        {
+            SAL_INFO("slideshow", "view changed" );
+            UnoViewSharedPtr pView = pCurrView->mpView;
+            pCurrView->mxTransition->viewChanged( pView->getUnoView(),
+                                                  getLeavingBitmap(ViewEntry(pView))->getXBitmap(),
+                                                  getEnteringBitmap(ViewEntry(pView))->getXBitmap() );
+        }
+    }
+
+private:
+    // One transition object per view
+    std::vector< std::unique_ptr<TransitionViewPair> > maTransitions;
+
+    // bool
+    bool mbSuccess;
+
+    sal_Int16 mnTransitionType;
+    sal_Int16 mnTransitionSubType;
+    RGBColor mnTransitionFadeColor;
+
+    uno::Reference<presentation::XTransitionFactory> mxFactory;
+};
+
+class ClippedSlideChange : public SlideChangeBase
+{
+public:
+    /** Create a new SlideChanger, for the given leaving and
+        entering slide bitmaps, which applies the given clip
+        polygon.
+    */
+    ClippedSlideChange(
+        const SlideSharedPtr&                   pEnteringSlide,
+        const ParametricPolyPolygonSharedPtr&   rPolygon,
+        const TransitionInfo&                   rTransitionInfo,
+        const UnoViewContainer&                 rViewContainer,
+        ScreenUpdater&                          rScreenUpdater,
+        EventMultiplexer&                       rEventMultiplexer,
+        bool                                    bDirectionForward,
+        const SoundPlayerSharedPtr&             pSoundPlayer ) :
+        SlideChangeBase(
+            // leaving bitmap is empty, we're leveraging the fact that the
+            // old slide is still displayed in the background:
+            std::optional<SlideSharedPtr>(),
+            pEnteringSlide,
+            pSoundPlayer,
+            rViewContainer,
+            rScreenUpdater,
+            rEventMultiplexer ),
+        maClippingFunctor( rPolygon,
+                           rTransitionInfo,
+                           bDirectionForward,
+                           true )
+        {}
+
+    virtual void performIn(
+        const ::cppcanvas::CustomSpriteSharedPtr&   rSprite,
+        const ViewEntry&                            rViewEntry,
+        const ::cppcanvas::CanvasSharedPtr&         rDestinationCanvas,
+        double                                      t ) override;
+
+    virtual void performOut(
+        const ::cppcanvas::CustomSpriteSharedPtr&  rSprite,
+        const ViewEntry&                           rViewEntry,
+        const ::cppcanvas::CanvasSharedPtr&        rDestinationCanvas,
+        double                                     t ) override;
+
+private:
+    ClippingFunctor             maClippingFunctor;
+};
+
+void ClippedSlideChange::performIn(
+    const ::cppcanvas::CustomSpriteSharedPtr&   rSprite,
+    const ViewEntry&                            rViewEntry,
+    const ::cppcanvas::CanvasSharedPtr&         /*rDestinationCanvas*/,
+    double                                      t )
+{
+    // #i46602# Better work in device coordinate space here,
+    // otherwise, we too easily suffer from roundoffs. Apart from
+    // that, getEnteringSizePixel() _guarantees_ to cover the whole
+    // slide bitmap. There's a catch, though: this removes any effect
+    // of the view transformation (e.g. rotation) from the transition.
+    rSprite->setClipPixel(
+        maClippingFunctor( t,
+                           ::basegfx::B2DSize( getEnteringSlideSizePixel(rViewEntry.mpView) ) ) );
+}
+
+void ClippedSlideChange::performOut(
+    const ::cppcanvas::CustomSpriteSharedPtr&  /*rSprite*/,
+    const ViewEntry&                           /*rViewEntry*/,
+    const ::cppcanvas::CanvasSharedPtr&        /*rDestinationCanvas*/,
+    double                                     /*t*/ )
+{
+    // not needed here
+}
+
+
+class FadingSlideChange : public SlideChangeBase
+{
+public:
+    /** Create a new SlideChanger, for the given leaving and
+        entering slides, which applies a fade effect.
+    */
+    FadingSlideChange(
+        std::optional<SlideSharedPtr> const & leavingSlide,
+        const SlideSharedPtr&                   pEnteringSlide,
+        std::optional<RGBColor> const&        rFadeColor,
+        const SoundPlayerSharedPtr&             pSoundPlayer,
+        const UnoViewContainer&                 rViewContainer,
+        ScreenUpdater&                          rScreenUpdater,
+        EventMultiplexer&                       rEventMultiplexer )
+        : SlideChangeBase( leavingSlide,
+                           pEnteringSlide,
+                           pSoundPlayer,
+                           rViewContainer,
+                           rScreenUpdater,
+                           rEventMultiplexer ),
+          maFadeColor( rFadeColor )
+        {}
+
+    virtual void prepareForRun(
+        const ViewEntry& rViewEntry,
+        const cppcanvas::CanvasSharedPtr& rDestinationCanvas ) override;
+
+    virtual void performIn(
+        const ::cppcanvas::CustomSpriteSharedPtr&   rSprite,
+        const ViewEntry&                            rViewEntry,
+        const ::cppcanvas::CanvasSharedPtr&         rDestinationCanvas,
+        double                                      t ) override;
+
+    virtual void performOut(
+        const ::cppcanvas::CustomSpriteSharedPtr&  rSprite,
+        const ViewEntry&                           rViewEntry,
+        const ::cppcanvas::CanvasSharedPtr&        rDestinationCanvas,
+        double                                     t ) override;
+
+private:
+    const std::optional< RGBColor >               maFadeColor;
+};
+
+void FadingSlideChange::prepareForRun(
+    const ViewEntry& rViewEntry,
+    const cppcanvas::CanvasSharedPtr& rDestinationCanvas )
+{
+    if ( maFadeColor )
+    {
+        // clear page to given fade color. 'Leaving' slide is
+        // painted atop of that, but slowly fading out.
+        fillPage( rDestinationCanvas,
+                ::basegfx::B2DSize( getEnteringSlideSizePixel( rViewEntry.mpView ) ),
+                *maFadeColor );
+    }
+}
+
+void FadingSlideChange::performIn(
+    const ::cppcanvas::CustomSpriteSharedPtr&   rSprite,
+    const ViewEntry&                            /*rViewEntry*/,
+    const ::cppcanvas::CanvasSharedPtr&         /*rDestinationCanvas*/,
+    double                                      t )
+{
+    ENSURE_OR_THROW(
+        rSprite,
+        "FadingSlideChange::performIn(): Invalid sprite" );
+
+    if( maFadeColor )
+        // After half of the active time, fade in new slide
+        rSprite->setAlpha( t > 0.5 ? 2.0*(t-0.5) : 0.0 );
+    else
+        // Fade in new slide over full active time
+        rSprite->setAlpha( t );
+}
+
+void FadingSlideChange::performOut(
+    const ::cppcanvas::CustomSpriteSharedPtr&  rSprite,
+    const ViewEntry&                           /* rViewEntry */,
+    const ::cppcanvas::CanvasSharedPtr&        rDestinationCanvas,
+    double                                     t )
+{
+    ENSURE_OR_THROW(
+        rSprite,
+        "FadingSlideChange::performOut(): Invalid sprite" );
+    ENSURE_OR_THROW(
+        rDestinationCanvas,
+        "FadingSlideChange::performOut(): Invalid dest canvas" );
+
+    // only needed for color fades
+    if( maFadeColor )
+    {
+        // Until half of the active time, fade out old
+        // slide. After half of the active time, old slide
+        // will be invisible.
+        rSprite->setAlpha( t > 0.5 ? 0.0 : 2.0*(0.5-t) );
+    }
+}
+
+class CutSlideChange : public SlideChangeBase
+{
+public:
+    /** Create a new SlideChanger, for the given leaving and
+        entering slides, which applies a cut effect.
+    */
+    CutSlideChange(
+        std::optional<SlideSharedPtr> const & leavingSlide,
+        const SlideSharedPtr&                   pEnteringSlide,
+        const RGBColor&                          rFadeColor,
+        const SoundPlayerSharedPtr&             pSoundPlayer,
+        const UnoViewContainer&                 rViewContainer,
+        ScreenUpdater&                          rScreenUpdater,
+        EventMultiplexer&                       rEventMultiplexer )
+        : SlideChangeBase( leavingSlide,
+                           pEnteringSlide,
+                           pSoundPlayer,
+                           rViewContainer,
+                           rScreenUpdater,
+                           rEventMultiplexer ),
+          maFadeColor( rFadeColor )
+        {}
+
+    virtual void prepareForRun(
+        const ViewEntry& rViewEntry,
+        const cppcanvas::CanvasSharedPtr& rDestinationCanvas ) override;
+
+    virtual void performIn(
+        const ::cppcanvas::CustomSpriteSharedPtr&   rSprite,
+        const ViewEntry&                            rViewEntry,
+        const ::cppcanvas::CanvasSharedPtr&         rDestinationCanvas,
+        double                                      t ) override;
+
+    virtual void performOut(
+        const ::cppcanvas::CustomSpriteSharedPtr&  rSprite,
+        const ViewEntry&                           rViewEntry,
+        const ::cppcanvas::CanvasSharedPtr&        rDestinationCanvas,
+        double                                     t ) override;
+
+private:
+    RGBColor maFadeColor;
+};
+
+void CutSlideChange::prepareForRun(
+    const ViewEntry& rViewEntry,
+    const cppcanvas::CanvasSharedPtr& rDestinationCanvas )
+{
+    // clear page to given fade color. 'Leaving' slide is
+    // painted atop of that
+    fillPage( rDestinationCanvas,
+              ::basegfx::B2DSize( getEnteringSlideSizePixel( rViewEntry.mpView ) ),
+              maFadeColor );
+}
+
+void CutSlideChange::performIn(
+    const ::cppcanvas::CustomSpriteSharedPtr&   rSprite,
+    const ViewEntry&                            /*rViewEntry*/,
+    const ::cppcanvas::CanvasSharedPtr&         /*rDestinationCanvas*/,
+    double                                      t )
+{
+    ENSURE_OR_THROW(
+        rSprite,
+        "CutSlideChange::performIn(): Invalid sprite" );
+
+    // After 2/3rd of the active time, display new slide
+    rSprite->setAlpha( t > 2/3.0 ? 1.0 : 0.0 );
+}
+
+void CutSlideChange::performOut(
+    const ::cppcanvas::CustomSpriteSharedPtr&  rSprite,
+    const ViewEntry&                           /* rViewEntry */,
+    const ::cppcanvas::CanvasSharedPtr&        rDestinationCanvas,
+    double                                     t )
+{
+    ENSURE_OR_THROW(
+        rSprite,
+        "CutSlideChange::performOut(): Invalid sprite" );
+    ENSURE_OR_THROW(
+        rDestinationCanvas,
+        "CutSlideChange::performOut(): Invalid dest canvas" );
+
+    // Until 1/3rd of the active time, display old slide.
+    rSprite->setAlpha( t > 1/3.0 ? 0.0 : 1.0 );
+}
+
+class MovingSlideChange : public SlideChangeBase
+{
+    /// Direction vector for leaving slide,
+    const ::basegfx::B2DVector  maLeavingDirection;
+
+    /// Direction vector for entering slide,
+    const ::basegfx::B2DVector  maEnteringDirection;
+
+public:
+    /** Create a new SlideChanger, for the given entering slide
+        bitmaps, which performs a moving slide change effect
+
+        @param rLeavingDirection
+        Direction vector. The move is performed along this
+        direction vector, starting at a position where the leaving
+        slide is fully visible, and ending at a position where the
+        leaving slide is just not visible. The vector must have
+        unit length.
+
+        @param rEnteringDirection
+        Direction vector. The move is performed along this
+        direction vector, starting at a position where the
+        entering slide is just not visible, and ending at the
+        final slide position. The vector must have unit length.
+    */
+    MovingSlideChange(
+        const std::optional<SlideSharedPtr>& leavingSlide,
+        const SlideSharedPtr&                  pEnteringSlide,
+        const SoundPlayerSharedPtr&            pSoundPlayer,
+        const UnoViewContainer&                rViewContainer,
+        ScreenUpdater&                         rScreenUpdater,
+        EventMultiplexer&                      rEventMultiplexer,
+        const ::basegfx::B2DVector&            rLeavingDirection,
+        const ::basegfx::B2DVector&            rEnteringDirection )
+        : SlideChangeBase(
+            leavingSlide, pEnteringSlide, pSoundPlayer,
+            rViewContainer, rScreenUpdater, rEventMultiplexer,
+            // Optimization: when leaving bitmap is given,
+            // but it does not move, don't create sprites for it,
+            // we simply paint it once at startup:
+            !rLeavingDirection.equalZero() /* bCreateLeavingSprites */,
+            !rEnteringDirection.equalZero() /* bCreateEnteringSprites */ ),
+          // TODO(F1): calc correct length of direction
+          // vector. Directions not strictly horizontal or vertical
+          // must travel a longer distance.
+          maLeavingDirection( rLeavingDirection ),
+          // TODO(F1): calc correct length of direction
+          // vector. Directions not strictly horizontal or vertical
+          // must travel a longer distance.
+          maEnteringDirection( rEnteringDirection )
+        {}
+
+    virtual void prepareForRun(
+        const ViewEntry& rViewEntry,
+        const cppcanvas::CanvasSharedPtr& rDestinationCanvas ) override;
+
+    virtual void performIn(
+        const ::cppcanvas::CustomSpriteSharedPtr&   rSprite,
+        const ViewEntry&                            rViewEntry,
+        const ::cppcanvas::CanvasSharedPtr&         rDestinationCanvas,
+        double                                      t ) override;
+
+    virtual void performOut(
+        const ::cppcanvas::CustomSpriteSharedPtr&  rSprite,
+        const ViewEntry&                           rViewEntry,
+        const ::cppcanvas::CanvasSharedPtr&        rDestinationCanvas,
+        double                                     t ) override;
+};
+
+void MovingSlideChange::prepareForRun(
+    const ViewEntry& rViewEntry,
+    const cppcanvas::CanvasSharedPtr& rDestinationCanvas )
+{
+    if ( maLeavingDirection.equalZero() )
+        renderBitmap( getLeavingBitmap( rViewEntry ), rDestinationCanvas );
+    else if ( maEnteringDirection.equalZero() )
+        renderBitmap( getEnteringBitmap( rViewEntry ), rDestinationCanvas );
+}
+
+void MovingSlideChange::performIn(
+    const ::cppcanvas::CustomSpriteSharedPtr&   rSprite,
+    const ViewEntry&                            rViewEntry,
+    const ::cppcanvas::CanvasSharedPtr&         rDestinationCanvas,
+    double                                      t )
+{
+    // intro sprite moves:
+
+    ENSURE_OR_THROW(
+        rSprite,
+        "MovingSlideChange::performIn(): Invalid sprite" );
+    ENSURE_OR_THROW(
+        rDestinationCanvas,
+        "MovingSlideChange::performIn(): Invalid dest canvas" );
+
+    // TODO(F1): This does not account for non-translational
+    // transformations! If the canvas is rotated, we still
+    // move the sprite unrotated (which might or might not
+    // produce the intended effect).
+    const basegfx::B2DHomMatrix aViewTransform(
+        rDestinationCanvas->getTransformation() );
+    const basegfx::B2DPoint aPageOrigin(
+        aViewTransform * basegfx::B2DPoint() );
+
+    // move sprite
+    rSprite->movePixel(
+        aPageOrigin +
+        ((t - 1.0) *
+         ::basegfx::B2DSize( getEnteringSlideSizePixel(rViewEntry.mpView) ) *
+         maEnteringDirection) );
+}
+
+void MovingSlideChange::performOut(
+    const ::cppcanvas::CustomSpriteSharedPtr&  rSprite,
+    const ViewEntry&                           rViewEntry,
+    const ::cppcanvas::CanvasSharedPtr&        rDestinationCanvas,
+    double                                     t )
+{
+    // outro sprite moves:
+
+    ENSURE_OR_THROW(
+        rSprite,
+        "MovingSlideChange::performOut(): Invalid sprite" );
+    ENSURE_OR_THROW(
+        rDestinationCanvas,
+        "MovingSlideChange::performOut(): Invalid dest canvas" );
+
+    // TODO(F1): This does not account for non-translational
+    // transformations! If the canvas is rotated, we still
+    // move the sprite unrotated (which might or might not
+    // produce the intended effect).
+    const basegfx::B2DHomMatrix aViewTransform(
+        rDestinationCanvas->getTransformation() );
+    const basegfx::B2DPoint aPageOrigin(
+        aViewTransform * basegfx::B2DPoint() );
+
+    // move sprite
+    rSprite->movePixel(
+        aPageOrigin + (t *
+                       ::basegfx::B2DSize( getEnteringSlideSizePixel(rViewEntry.mpView) ) *
+                       maLeavingDirection) );
+}
+
+
+NumberAnimationSharedPtr createPushWipeTransition(
+    std::optional<SlideSharedPtr> const &         leavingSlide_,
+    const SlideSharedPtr&                           pEnteringSlide,
+    const UnoViewContainer&                         rViewContainer,
+    ScreenUpdater&                                  rScreenUpdater,
+    EventMultiplexer&                               rEventMultiplexer,
+    sal_Int16                                       /*nTransitionType*/,
+    sal_Int16                                       nTransitionSubType,
+    bool                                            /*bTransitionDirection*/,
+    const SoundPlayerSharedPtr&                     pSoundPlayer )
+{
+    std::optional<SlideSharedPtr> leavingSlide; // no bitmap
+    if (leavingSlide_ && *leavingSlide_ != nullptr)
+    {
+        // opt: only page, if we've an
+        // actual slide to move out here. We
+        // _don't_ need a fake black background
+        // bitmap, neither for push nor for comb
+        // wipes.
+        leavingSlide = leavingSlide_;
+    }
+
+    // setup direction vector
+    bool bComb( false );
+    ::basegfx::B2DVector aDirection;
+    switch( nTransitionSubType )
+    {
+    default:
+        OSL_FAIL(
+            "createPushWipeTransition(): Unexpected transition "
+            "subtype for animations::TransitionType::PUSHWIPE "
+            "transitions" );
+        return NumberAnimationSharedPtr();
+
+    case animations::TransitionSubType::FROMTOP:
+        aDirection = ::basegfx::B2DVector( 0.0, 1.0 );
+        break;
+
+    case animations::TransitionSubType::FROMBOTTOM:
+        aDirection = ::basegfx::B2DVector( 0.0, -1.0 );
+        break;
+
+    case animations::TransitionSubType::FROMLEFT:
+        aDirection = ::basegfx::B2DVector( 1.0, 0.0 );
+        break;
+
+    case animations::TransitionSubType::FROMRIGHT:
+        aDirection = ::basegfx::B2DVector( -1.0, 0.0 );
+        break;
+
+    case animations::TransitionSubType::FROMBOTTOMRIGHT:
+        aDirection = ::basegfx::B2DVector( -1.0, -1.0 );
+        break;
+
+    case animations::TransitionSubType::FROMBOTTOMLEFT:
+        aDirection = ::basegfx::B2DVector( 1.0, -1.0 );
+        break;
+
+    case animations::TransitionSubType::FROMTOPRIGHT:
+        aDirection = ::basegfx::B2DVector( -1.0, 1.0 );
+        break;
+
+    case animations::TransitionSubType::FROMTOPLEFT:
+        aDirection = ::basegfx::B2DVector( 1.0, 1.0 );
+        break;
+
+    case animations::TransitionSubType::COMBHORIZONTAL:
+        aDirection = ::basegfx::B2DVector( 1.0, 0.0 );
+        bComb = true;
+        break;
+
+    case animations::TransitionSubType::COMBVERTICAL:
+        aDirection = ::basegfx::B2DVector( 0.0, 1.0 );
+        bComb = true;
+        break;
+    }
+
+    if( bComb )
+    {
+        return std::make_shared<CombTransition>( leavingSlide,
+                                pEnteringSlide,
+                                pSoundPlayer,
+                                rViewContainer,
+                                rScreenUpdater,
+                                rEventMultiplexer,
+                                aDirection,
+                                24 /* comb with 12 stripes */ );
+    }
+    else
+    {
+        return std::make_shared<MovingSlideChange>( leavingSlide,
+                                   pEnteringSlide,
+                                   pSoundPlayer,
+                                   rViewContainer,
+                                   rScreenUpdater,
+                                   rEventMultiplexer,
+                                   aDirection,
+                                   aDirection );
+    }
+}
+
+NumberAnimationSharedPtr createSlideWipeTransition(
+    std::optional<SlideSharedPtr> const &         leavingSlide,
+    const SlideSharedPtr&                           pEnteringSlide,
+    const UnoViewContainer&                         rViewContainer,
+    ScreenUpdater&                                  rScreenUpdater,
+    EventMultiplexer&                               rEventMultiplexer,
+    sal_Int16                                       /*nTransitionType*/,
+    sal_Int16                                       nTransitionSubType,
+    bool                                            bTransitionDirection,
+    const SoundPlayerSharedPtr&                     pSoundPlayer )
+{
+    // setup 'in' direction vector
+    ::basegfx::B2DVector aInDirection;
+    switch( nTransitionSubType )
+    {
+    default:
+        OSL_FAIL(
+            "createSlideWipeTransition(): Unexpected transition "
+            "subtype for animations::TransitionType::SLIDEWIPE "
+            "transitions" );
+        return NumberAnimationSharedPtr();
+
+    case animations::TransitionSubType::FROMTOP:
+        aInDirection = ::basegfx::B2DVector( 0.0, 1.0 );
+        break;
+
+    case animations::TransitionSubType::FROMRIGHT:
+        aInDirection = ::basegfx::B2DVector( -1.0, 0.0 );
+        break;
+
+    case animations::TransitionSubType::FROMLEFT:
+        aInDirection = ::basegfx::B2DVector( 1.0, 0.0 );
+        break;
+
+    case animations::TransitionSubType::FROMBOTTOM:
+        aInDirection = ::basegfx::B2DVector( 0.0, -1.0 );
+        break;
+
+    case animations::TransitionSubType::FROMBOTTOMRIGHT:
+        aInDirection = ::basegfx::B2DVector( -1.0, -1.0 );
+        break;
+
+    case animations::TransitionSubType::FROMBOTTOMLEFT:
+        aInDirection = ::basegfx::B2DVector( 1.0, -1.0 );
+        break;
+
+    case animations::TransitionSubType::FROMTOPRIGHT:
+        aInDirection = ::basegfx::B2DVector( -1.0, 1.0 );
+        break;
+
+    case animations::TransitionSubType::FROMTOPLEFT:
+        aInDirection = ::basegfx::B2DVector( 1.0, 1.0 );
+        break;
+    }
+
+    if( bTransitionDirection )
+    {
+        // normal, 'forward' slide wipe effect. Since the old
+        // content is still on screen (and does not move), we omit
+        // the 'leaving' slide.
+
+
+        return std::make_shared<MovingSlideChange>(
+                std::optional<SlideSharedPtr>() /* no slide */,
+                pEnteringSlide,
+                pSoundPlayer,
+                rViewContainer,
+                rScreenUpdater,
+                rEventMultiplexer,
+                basegfx::B2DVector(),
+                aInDirection );
+    }
+    else
+    {
+        // 'reversed' slide wipe effect. Reverse for slide wipes
+        // means, that the new slide is in the back, statically,
+        // and the old one is moving off in the foreground.
+
+
+        return std::make_shared<MovingSlideChange>( leavingSlide,
+                                   pEnteringSlide,
+                                   pSoundPlayer,
+                                   rViewContainer,
+                                   rScreenUpdater,
+                                   rEventMultiplexer,
+                                   aInDirection,
+                                   basegfx::B2DVector() );
+    }
+}
+
+NumberAnimationSharedPtr createPluginTransition(
+    sal_Int16                                nTransitionType,
+    sal_Int16                                nTransitionSubType,
+    const RGBColor&                          rTransitionFadeColor,
+    std::optional<SlideSharedPtr> const&   pLeavingSlide,
+    const SlideSharedPtr&                    pEnteringSlide,
+    const UnoViewContainer&                  rViewContainer,
+    ScreenUpdater&                           rScreenUpdater,
+    const uno::Reference<
+          presentation::XTransitionFactory>& xFactory,
+    const SoundPlayerSharedPtr&              pSoundPlayer,
+    EventMultiplexer&                        rEventMultiplexer)
+{
+    auto pTransition =
+        std::make_shared<PluginSlideChange>(
+            nTransitionType,
+            nTransitionSubType,
+            rTransitionFadeColor,
+            pLeavingSlide,
+            pEnteringSlide,
+            rViewContainer,
+            rScreenUpdater,
+            xFactory,
+            pSoundPlayer,
+            rEventMultiplexer );
+
+    if( !pTransition->Success() )
+        return nullptr;
+    return pTransition;
+}
+
+} // anon namespace
+
+
+NumberAnimationSharedPtr TransitionFactory::createSlideTransition(
+    const SlideSharedPtr&                                   pLeavingSlide,
+    const SlideSharedPtr&                                   pEnteringSlide,
+    const UnoViewContainer&                                 rViewContainer,
+    ScreenUpdater&                                          rScreenUpdater,
+    EventMultiplexer&                                       rEventMultiplexer,
+    const uno::Reference<presentation::XTransitionFactory>& xOptionalFactory,
+    sal_Int16                                               nTransitionType,
+    sal_Int16                                               nTransitionSubType,
+    bool                                                    bTransitionDirection,
+    const RGBColor&                                         rTransitionFadeColor,
+    const SoundPlayerSharedPtr&                             pSoundPlayer            )
+{
+    // xxx todo: change to TransitionType::NONE, TransitionSubType::NONE:
+    if (nTransitionType == 0 && nTransitionSubType == 0) {
+        // just play sound, no slide transition:
+        if (pSoundPlayer) {
+            pSoundPlayer->startPlayback();
+            // xxx todo: for now, presentation.cxx takes care about the slide
+            // #i50492#  transition sound object, so just release it here
+        }
+        return NumberAnimationSharedPtr();
+    }
+
+    ENSURE_OR_THROW(
+        pEnteringSlide,
+        "TransitionFactory::createSlideTransition(): Invalid entering slide" );
+
+    if( xOptionalFactory.is() &&
+        xOptionalFactory->hasTransition(nTransitionType, nTransitionSubType) )
+    {
+        // #i82460# - optional plugin factory claims this transition. delegate.
+        NumberAnimationSharedPtr pTransition(
+            createPluginTransition(
+                nTransitionType,
+                nTransitionSubType,
+                rTransitionFadeColor,
+                std::make_optional(pLeavingSlide),
+                pEnteringSlide,
+                rViewContainer,
+                rScreenUpdater,
+                xOptionalFactory,
+                pSoundPlayer,
+                rEventMultiplexer ));
+
+        if( pTransition )
+            return pTransition;
+    }
+
+    const TransitionInfo* pTransitionInfo(
+        getTransitionInfo( nTransitionType, nTransitionSubType ) );
+
+    if( pTransitionInfo != nullptr )
+    {
+        switch( pTransitionInfo->meTransitionClass )
+        {
+            default:
+            case TransitionInfo::TRANSITION_INVALID:
+                SAL_WARN("slideshow",
+                    "TransitionFactory::createSlideTransition(): "
+                    "Invalid type/subtype combination encountered."
+                    << nTransitionType << " " << nTransitionSubType );
+                return NumberAnimationSharedPtr();
+
+
+            case TransitionInfo::TRANSITION_CLIP_POLYPOLYGON:
+            {
+                // generate parametric poly-polygon
+                ParametricPolyPolygonSharedPtr pPoly(
+                    ParametricPolyPolygonFactory::createClipPolyPolygon(
+                        nTransitionType, nTransitionSubType ) );
+
+                // create a clip transition from that
+                return std::make_shared<ClippedSlideChange>( pEnteringSlide,
+                                            pPoly,
+                                            *pTransitionInfo,
+                                            rViewContainer,
+                                            rScreenUpdater,
+                                            rEventMultiplexer,
+                                            bTransitionDirection,
+                                            pSoundPlayer );
+            }
+
+            case TransitionInfo::TRANSITION_SPECIAL:
+            {
+                switch( nTransitionType )
+                {
+                    default:
+                        OSL_FAIL(
+                            "TransitionFactory::createSlideTransition(): "
+                            "Unexpected transition type for "
+                            "TRANSITION_SPECIAL transitions" );
+                        return NumberAnimationSharedPtr();
+
+                    case animations::TransitionType::RANDOM:
+                    {
+                        // select randomly one of the effects from the
+                        // TransitionFactoryTable
+
+                        const TransitionInfo* pRandomTransitionInfo(
+                            getRandomTransitionInfo() );
+
+                        ENSURE_OR_THROW(
+                            pRandomTransitionInfo != nullptr,
+                            "TransitionFactory::createSlideTransition(): "
+                            "Got invalid random transition info" );
+
+                        ENSURE_OR_THROW(
+                            pRandomTransitionInfo->mnTransitionType !=
+                            animations::TransitionType::RANDOM,
+                            "TransitionFactory::createSlideTransition(): "
+                            "Got random again for random input!" );
+
+                        // and recurse
+                        return createSlideTransition(
+                            pLeavingSlide,
+                            pEnteringSlide,
+                            rViewContainer,
+                            rScreenUpdater,
+                            rEventMultiplexer,
+                            xOptionalFactory,
+                            pRandomTransitionInfo->mnTransitionType,
+                            pRandomTransitionInfo->mnTransitionSubType,
+                            bTransitionDirection,
+                            rTransitionFadeColor,
+                            pSoundPlayer );
+                    }
+
+                    case animations::TransitionType::PUSHWIPE:
+                    {
+                        return createPushWipeTransition(
+                            std::make_optional(pLeavingSlide),
+                            pEnteringSlide,
+                            rViewContainer,
+                            rScreenUpdater,
+                            rEventMultiplexer,
+                            nTransitionType,
+                            nTransitionSubType,
+                            bTransitionDirection,
+                            pSoundPlayer );
+                    }
+
+                    case animations::TransitionType::SLIDEWIPE:
+                    {
+                        return createSlideWipeTransition(
+                            std::make_optional(pLeavingSlide),
+                            pEnteringSlide,
+                            rViewContainer,
+                            rScreenUpdater,
+                            rEventMultiplexer,
+                            nTransitionType,
+                            nTransitionSubType,
+                            bTransitionDirection,
+                            pSoundPlayer );
+                    }
+
+                    case animations::TransitionType::BARWIPE:
+                    case animations::TransitionType::FADE:
+                    {
+                        // black page:
+                        std::optional<SlideSharedPtr> leavingSlide;
+                        std::optional<RGBColor> aFadeColor;
+
+                        switch( nTransitionSubType )
+                        {
+                            case animations::TransitionSubType::CROSSFADE:
+                                // crossfade needs no further setup,
+                                // just blend new slide over current
+                                // slide.
+                                break;
+
+                                // TODO(F1): Implement toColor/fromColor fades
+                            case animations::TransitionSubType::FADETOCOLOR:
+                            case animations::TransitionSubType::FADEFROMCOLOR:
+                            case animations::TransitionSubType::FADEOVERCOLOR:
+                                if (pLeavingSlide) {
+                                    // only generate, if fade
+                                    // effect really needs it.
+                                    leavingSlide = pLeavingSlide;
+                                }
+                                aFadeColor = rTransitionFadeColor;
+                                break;
+
+                            default:
+                                ENSURE_OR_THROW( false,
+                                                  "SlideTransitionFactory::createSlideTransition(): Unknown FADE subtype" );
+                        }
+
+                        if( nTransitionType == animations::TransitionType::FADE )
+                            return std::make_shared<FadingSlideChange>(
+                                    leavingSlide,
+                                    pEnteringSlide,
+                                    aFadeColor,
+                                    pSoundPlayer,
+                                    rViewContainer,
+                                    rScreenUpdater,
+                                    rEventMultiplexer );
+                        else
+                            return std::make_shared<CutSlideChange>(
+                                    leavingSlide,
+                                    pEnteringSlide,
+                                    rTransitionFadeColor,
+                                    pSoundPlayer,
+                                    rViewContainer,
+                                    rScreenUpdater,
+                                    rEventMultiplexer );
+                    }
+                }
+            }
+            break;
+        }
+    }
+
+    // No animation generated, maybe no table entry for given
+    // transition?
+    SAL_WARN("slideshow",
+        "TransitionFactory::createSlideTransition(): "
+        "Unknown type/subtype combination encountered "
+        << nTransitionType << " " << nTransitionSubType );
+    OSL_FAIL(
+        "TransitionFactory::createSlideTransition(): "
+        "Unknown type/subtype combination encountered" );
+
+    return NumberAnimationSharedPtr();
+}
+
+} // namespace presentation
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */