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, 199 insertions, 0 deletions

diff --git a/slideshow/source/engine/animatedsprite.cxx b/slideshow/source/engine/animatedsprite.cxx
new file mode 100644
index 000000000..94ee9e313
--- /dev/null
+++ b/slideshow/source/engine/animatedsprite.cxx
@@ -0,0 +1,199 @@
+/* -*- 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 <animatedsprite.hxx>
+
+#include <cppcanvas/canvas.hxx>
+#include <cppcanvas/customsprite.hxx>
+#include <canvas/canvastools.hxx>
+
+#include <basegfx/vector/b2dvector.hxx>
+#include <basegfx/point/b2dpoint.hxx>
+#include <basegfx/matrix/b2dhommatrix.hxx>
+#include <basegfx/numeric/ftools.hxx>
+
+
+using namespace ::com::sun::star;
+
+namespace slideshow::internal
+{
+        AnimatedSprite::AnimatedSprite( const ViewLayerSharedPtr&   rViewLayer,
+                                        const ::basegfx::B2DSize&   rSpriteSizePixel,
+                                        double                      nSpritePrio ) :
+            mpViewLayer( rViewLayer ),
+            mpSprite(),
+            maEffectiveSpriteSizePixel( rSpriteSizePixel ),
+            maContentPixelOffset(),
+            mnSpritePrio(nSpritePrio),
+            mnAlpha(0.0),
+            maPosPixel(),
+            maClip(),
+            mbSpriteVisible( false )
+        {
+            ENSURE_OR_THROW( mpViewLayer, "AnimatedSprite::AnimatedSprite(): Invalid view layer" );
+
+            // Add half a pixel tolerance to sprite size, since we later on compare
+            // against it in resize(). And view transformations will almost never yield
+            // the same data bits when transforming to device coordinates
+            maEffectiveSpriteSizePixel += ::basegfx::B2DSize(0.5, 0.5);
+
+            mpSprite = mpViewLayer->createSprite( maEffectiveSpriteSizePixel,
+                                                  mnSpritePrio );
+
+            ENSURE_OR_THROW( mpSprite, "AnimatedSprite::AnimatedSprite(): Could not create sprite" );
+        }
+
+        ::cppcanvas::CanvasSharedPtr AnimatedSprite::getContentCanvas() const
+        {
+            ENSURE_OR_THROW( mpViewLayer->getCanvas(), "AnimatedSprite::getContentCanvas(): No view layer canvas" );
+
+            const ::cppcanvas::CanvasSharedPtr pContentCanvas( mpSprite->getContentCanvas() );
+            pContentCanvas->clear();
+
+            // extract linear part of canvas view transformation
+            // (linear means: without translational components). The
+            // only translation that is imposed at the view transform
+            // is the local content pixel offset.
+
+            // We can apply that directly here, no need to call
+            // aLinearTransform.translate(), since, as said above, the
+            // last column of aLinearTransform is assumed [0 0 1]
+            ::basegfx::B2DHomMatrix aLinearTransform( mpViewLayer->getTransformation() );
+            aLinearTransform.set( 0, 2, maContentPixelOffset.getX() );
+            aLinearTransform.set( 1, 2, maContentPixelOffset.getY() );
+
+            // apply linear part of canvas view transformation to sprite canvas
+            pContentCanvas->setTransformation( aLinearTransform );
+
+            return pContentCanvas;
+        }
+
+        void AnimatedSprite::resize( const ::basegfx::B2DSize& rSpriteSizePixel )
+        {
+            // Enlarge or reduce the sprite size, if necessary.  This
+            // method employs a strategy similar to container, when
+            // allocating memory: size is doubled or halved every time
+            // the limit is reached. This makes for amortized constant
+            // time in runtime complexity. Note that we take exact
+            // powers of two here, since several HW-accelerated canvas
+            // implementations are limited to such sprite sizes
+            // (otherwise, those implementations would internally
+            // round up, too, wasting precious mem).
+            ::basegfx::B2DSize  aNewSize( maEffectiveSpriteSizePixel );
+            bool                bNeedResize( false );
+
+            if( rSpriteSizePixel.getX() > maEffectiveSpriteSizePixel.getX() ||
+                rSpriteSizePixel.getX() < 0.5*maEffectiveSpriteSizePixel.getX() )
+            {
+                // enlarge or shrink width
+                aNewSize.setX( ::canvas::tools::nextPow2( ::basegfx::fround(rSpriteSizePixel.getX()) ) );
+                bNeedResize = true;
+            }
+
+            if( rSpriteSizePixel.getY() > maEffectiveSpriteSizePixel.getY() ||
+                rSpriteSizePixel.getY() < 0.5*maEffectiveSpriteSizePixel.getY() )
+            {
+                // enlarge or shrink height, by doubling it
+                aNewSize.setY( ::canvas::tools::nextPow2( ::basegfx::fround(rSpriteSizePixel.getY()) ) );
+                bNeedResize = true;
+            }
+
+            if( !bNeedResize )
+                return;
+
+            // as the old sprite might have already been altered
+            // (and therefore been placed in the update list of
+            // the spritecanvas for this frame), must hide it
+            // here, to ensure it's not visible on screen any
+            // longer.
+            mpSprite->hide();
+
+            maEffectiveSpriteSizePixel = aNewSize;
+            mpSprite = mpViewLayer->createSprite( maEffectiveSpriteSizePixel,
+                                                  mnSpritePrio );
+
+            ENSURE_OR_THROW( mpSprite,
+                              "AnimatedSprite::resize(): Could not create new sprite" );
+
+            // set attributes similar to previous sprite
+            if (mbSpriteVisible)
+            {
+                mpSprite->show();
+                mpSprite->setAlpha( mnAlpha );
+
+                if( maPosPixel )
+                    mpSprite->movePixel( *maPosPixel );
+
+                if( maClip )
+                    mpSprite->setClip( *maClip );
+            }
+        }
+
+        void AnimatedSprite::setPixelOffset( const ::basegfx::B2DSize& rPixelOffset )
+        {
+            maContentPixelOffset = rPixelOffset;
+        }
+
+        void AnimatedSprite::movePixel( const ::basegfx::B2DPoint& rNewPos )
+        {
+            maPosPixel = rNewPos;
+            mpSprite->movePixel( rNewPos );
+        }
+
+        void AnimatedSprite::setAlpha( double nAlpha )
+        {
+            mnAlpha = nAlpha;
+            mpSprite->setAlpha( nAlpha );
+        }
+
+        void AnimatedSprite::clip( const ::basegfx::B2DPolyPolygon& rClip )
+        {
+            maClip = rClip;
+            mpSprite->setClipPixel( rClip );
+        }
+
+        void AnimatedSprite::clip()
+        {
+            maClip.reset();
+            mpSprite->setClip();
+        }
+
+        void AnimatedSprite::transform( const ::basegfx::B2DHomMatrix& rTransform )
+        {
+            mpSprite->transform( rTransform );
+        }
+
+        void AnimatedSprite::hide()
+        {
+            mpSprite->hide();
+            mbSpriteVisible = false;
+        }
+
+        void AnimatedSprite::show()
+        {
+            mbSpriteVisible = true;
+            mpSprite->show();
+        }
+
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */