Adding upstream version 4:7.4.7.upstream/4%7.4.7upstream

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

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
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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: */