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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 .
+ */
+
+
+#include <com/sun/star/beans/XPropertySet.hpp>
+
+#include <sal/log.hxx>
+
+#include <algorithm>
+
+#include "backgroundshape.hxx"
+#include <slideshowexceptions.hxx>
+#include <slideshowcontext.hxx>
+#include "gdimtftools.hxx"
+#include <shape.hxx>
+#include "viewbackgroundshape.hxx"
+
+
+using namespace ::com::sun::star;
+
+
+namespace slideshow::internal
+{
+ namespace {
+
+ /** Representation of a draw document's background shape.
+
+ This class implements the Shape interface for the
+ background shape. Since the background shape is neither
+ animatable nor attributable, those more specialized
+ derivations of the Shape interface are not implemented
+ here.
+
+ @attention this class is to be treated 'final', i.e. one
+ should not derive from it.
+ */
+ class BackgroundShape : public Shape
+ {
+ public:
+ /** Create the background shape.
+
+ This method creates a shape that handles the
+ peculiarities of the draw API regarding background
+ content.
+ */
+ BackgroundShape( const css::uno::Reference< css::drawing::XDrawPage >& xDrawPage,
+ const css::uno::Reference< css::drawing::XDrawPage >& xMasterPage,
+ const SlideShowContext& rContext ); // throw ShapeLoadFailedException;
+
+ virtual css::uno::Reference<
+ css::drawing::XShape > getXShape() const override;
+
+ // View layer methods
+
+
+ virtual void addViewLayer( const ViewLayerSharedPtr& rNewLayer,
+ bool bRedrawLayer ) override;
+ virtual bool removeViewLayer( const ViewLayerSharedPtr& rNewLayer ) override;
+ virtual void clearAllViewLayers() override;
+
+
+ // attribute methods
+
+
+ virtual ::basegfx::B2DRectangle getBounds() const override;
+ virtual ::basegfx::B2DRectangle getDomBounds() const override;
+ virtual ::basegfx::B2DRectangle getUpdateArea() const override;
+ virtual bool isVisible() const override;
+ virtual double getPriority() const override;
+ virtual bool isBackgroundDetached() const override;
+
+
+ // render methods
+
+
+ virtual bool update() const override;
+ virtual bool render() const override;
+ virtual bool isContentChanged() const override;
+
+ private:
+ /// The metafile actually representing the Shape
+ GDIMetaFileSharedPtr mpMtf;
+
+ // The attributes of this Shape
+ ::basegfx::B2DRectangle maBounds; // always needed for rendering
+
+ /// the list of active view shapes (one for each registered view layer)
+ typedef ::std::vector< ViewBackgroundShapeSharedPtr > ViewBackgroundShapeVector;
+ ViewBackgroundShapeVector maViewShapes;
+ };
+
+ }
+
+ BackgroundShape::BackgroundShape( const uno::Reference< drawing::XDrawPage >& xDrawPage,
+ const uno::Reference< drawing::XDrawPage >& xMasterPage,
+ const SlideShowContext& rContext ) :
+ mpMtf(),
+ maBounds(),
+ maViewShapes()
+ {
+ uno::Reference< beans::XPropertySet > xPropSet( xDrawPage,
+ uno::UNO_QUERY_THROW );
+ // first try the page background (overrides
+ // masterpage background), then try masterpage
+ GDIMetaFileSharedPtr xMtf = getMetaFile(uno::Reference<lang::XComponent>(xDrawPage, uno::UNO_QUERY),
+ xDrawPage, MTF_LOAD_BACKGROUND_ONLY,
+ rContext.mxComponentContext);
+
+ if (!xMtf)
+ {
+ xMtf = getMetaFile( uno::Reference<lang::XComponent>(xMasterPage, uno::UNO_QUERY),
+ xDrawPage, MTF_LOAD_BACKGROUND_ONLY,
+ rContext.mxComponentContext );
+ }
+
+ if (!xMtf)
+ {
+ throw ShapeLoadFailedException();
+ }
+
+ // there is a special background shape, add it
+ // as the first one
+
+ sal_Int32 nDocWidth=0;
+ sal_Int32 nDocHeight=0;
+ xPropSet->getPropertyValue("Width") >>= nDocWidth;
+ xPropSet->getPropertyValue("Height") >>= nDocHeight;
+
+ mpMtf = xMtf;
+ maBounds = ::basegfx::B2DRectangle( 0,0,nDocWidth, nDocHeight );
+ }
+
+ uno::Reference< drawing::XShape > BackgroundShape::getXShape() const
+ {
+ // no real XShape representative
+ return uno::Reference< drawing::XShape >();
+ }
+
+ void BackgroundShape::addViewLayer( const ViewLayerSharedPtr& rNewLayer,
+ bool bRedrawLayer )
+ {
+ // already added?
+ if( ::std::any_of( maViewShapes.begin(),
+ maViewShapes.end(),
+ [&rNewLayer]( const ViewBackgroundShapeSharedPtr& pBgShape )
+ { return pBgShape->getViewLayer() == rNewLayer; } ) )
+ {
+ // yes, nothing to do
+ return;
+ }
+
+ maViewShapes.push_back(
+ std::make_shared<ViewBackgroundShape>(
+ rNewLayer, maBounds ) );
+
+ // render the Shape on the newly added ViewLayer
+ if( bRedrawLayer )
+ maViewShapes.back()->render( mpMtf );
+ }
+
+ bool BackgroundShape::removeViewLayer( const ViewLayerSharedPtr& rLayer )
+ {
+ const ViewBackgroundShapeVector::iterator aEnd( maViewShapes.end() );
+
+ OSL_ENSURE( ::std::count_if(maViewShapes.begin(),
+ aEnd,
+ [&rLayer]( const ViewBackgroundShapeSharedPtr& pBgShape )
+ { return pBgShape->getViewLayer() == rLayer; } ) < 2,
+ "BackgroundShape::removeViewLayer(): Duplicate ViewLayer entries!" );
+
+ ViewBackgroundShapeVector::iterator aIter;
+
+ if( (aIter=::std::remove_if( maViewShapes.begin(),
+ aEnd,
+ [&rLayer]( const ViewBackgroundShapeSharedPtr& pBgShape )
+ { return pBgShape->getViewLayer() == rLayer; } )) == aEnd )
+ {
+ // view layer seemingly was not added, failed
+ return false;
+ }
+
+ // actually erase from container
+ maViewShapes.erase( aIter, aEnd );
+
+ return true;
+ }
+
+ void BackgroundShape::clearAllViewLayers()
+ {
+ maViewShapes.clear();
+ }
+
+ ::basegfx::B2DRectangle BackgroundShape::getBounds() const
+ {
+ return maBounds;
+ }
+
+ ::basegfx::B2DRectangle BackgroundShape::getDomBounds() const
+ {
+ return maBounds;
+ }
+
+ ::basegfx::B2DRectangle BackgroundShape::getUpdateArea() const
+ {
+ // TODO(F1): Need to expand background, too, when
+ // antialiasing?
+
+ // no transformation etc. possible for background shape
+ return maBounds;
+ }
+
+ bool BackgroundShape::isVisible() const
+ {
+ return true;
+ }
+
+ double BackgroundShape::getPriority() const
+ {
+ return 0.0; // lowest prio, we're the background
+ }
+
+ bool BackgroundShape::update() const
+ {
+ return render();
+ }
+
+ bool BackgroundShape::render() const
+ {
+ SAL_INFO( "slideshow", "::presentation::internal::BackgroundShape::render()" );
+ SAL_INFO( "slideshow", "::presentation::internal::BackgroundShape: 0x" << std::hex << this );
+
+ // gcc again...
+ const ::basegfx::B2DRectangle& rCurrBounds( BackgroundShape::getBounds() );
+
+ if( rCurrBounds.getRange().equalZero() )
+ {
+ // zero-sized shapes are effectively invisible,
+ // thus, we save us the rendering...
+ return true;
+ }
+
+ // redraw all view shapes, by calling their render() method
+ if( ::std::count_if( maViewShapes.begin(),
+ maViewShapes.end(),
+ [this]( const ViewBackgroundShapeSharedPtr& pBgShape )
+ { return pBgShape->render( this->mpMtf ); } )
+ != static_cast<ViewBackgroundShapeVector::difference_type>(maViewShapes.size()) )
+ {
+ // at least one of the ViewBackgroundShape::render() calls did return
+ // false - update failed on at least one ViewLayer
+ return false;
+ }
+
+ return true;
+ }
+
+ bool BackgroundShape::isContentChanged() const
+ {
+ return false;
+ }
+
+ bool BackgroundShape::isBackgroundDetached() const
+ {
+ return false; // we're not animatable
+ }
+
+
+ ShapeSharedPtr createBackgroundShape(
+ const uno::Reference< drawing::XDrawPage >& xDrawPage,
+ const uno::Reference< drawing::XDrawPage >& xMasterPage,
+ const SlideShowContext& rContext )
+ {
+ return std::make_shared<BackgroundShape>(
+ xDrawPage,
+ xMasterPage,
+ rContext );
+ }
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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