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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 .
*/
// must be first
#include <canvas/debug.hxx>
#include <com/sun/star/awt/Rectangle.hpp>
#include <com/sun/star/beans/XPropertySet.hpp>
#include <com/sun/star/awt/FontWeight.hpp>
#include <vcl/metaact.hxx>
#include <vcl/gdimtf.hxx>
#include <basegfx/numeric/ftools.hxx>
#include <boost/bind.hpp>
#include <cmath> // for trigonometry and fabs
#include <algorithm>
#include <functional>
#include <limits>
#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
{
namespace internal
{
/** 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 ::com::sun::star::uno::Reference<
::com::sun::star::drawing::XDrawPage >& xDrawPage,
const ::com::sun::star::uno::Reference<
::com::sun::star::drawing::XDrawPage >& xMasterPage,
const SlideShowContext& rContext ); // throw ShapeLoadFailedException;
virtual ::com::sun::star::uno::Reference<
::com::sun::star::drawing::XShape > getXShape() const;
// View layer methods
//------------------------------------------------------------------
virtual void addViewLayer( const ViewLayerSharedPtr& rNewLayer,
bool bRedrawLayer );
virtual bool removeViewLayer( const ViewLayerSharedPtr& rNewLayer );
virtual bool clearAllViewLayers();
// attribute methods
//------------------------------------------------------------------
virtual ::basegfx::B2DRectangle getBounds() const;
virtual ::basegfx::B2DRectangle getDomBounds() const;
virtual ::basegfx::B2DRectangle getUpdateArea() const;
virtual bool isVisible() const;
virtual double getPriority() const;
virtual bool isBackgroundDetached() const;
// render methods
//------------------------------------------------------------------
virtual bool update() const;
virtual bool render() const;
virtual bool isContentChanged() const;
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 );
GDIMetaFileSharedPtr pMtf( new GDIMetaFile() );
// first try the page background (overrides
// masterpage background), then try masterpage
if( !getMetaFile( uno::Reference<lang::XComponent>(xDrawPage, uno::UNO_QUERY),
xDrawPage, *pMtf, MTF_LOAD_BACKGROUND_ONLY,
rContext.mxComponentContext ) &&
!getMetaFile( uno::Reference<lang::XComponent>(xMasterPage, uno::UNO_QUERY),
xDrawPage, *pMtf, MTF_LOAD_BACKGROUND_ONLY,
rContext.mxComponentContext ))
{
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 = pMtf;
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 )
{
ViewBackgroundShapeVector::iterator aEnd( maViewShapes.end() );
// already added?
if( ::std::find_if( maViewShapes.begin(),
aEnd,
::boost::bind<bool>(
::std::equal_to< ViewLayerSharedPtr >(),
::boost::bind( &ViewBackgroundShape::getViewLayer,
_1 ),
::boost::cref( rNewLayer ) ) ) != aEnd )
{
// yes, nothing to do
return;
}
maViewShapes.push_back(
ViewBackgroundShapeSharedPtr(
new 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,
::boost::bind<bool>(
::std::equal_to< ViewLayerSharedPtr >(),
::boost::bind( &ViewBackgroundShape::getViewLayer,
_1 ),
::boost::cref( rLayer ) ) ) < 2,
"BackgroundShape::removeViewLayer(): Duplicate ViewLayer entries!" );
ViewBackgroundShapeVector::iterator aIter;
if( (aIter=::std::remove_if( maViewShapes.begin(),
aEnd,
::boost::bind<bool>(
::std::equal_to< ViewLayerSharedPtr >(),
::boost::bind( &ViewBackgroundShape::getViewLayer,
_1 ),
::boost::cref( rLayer ) ) )) == aEnd )
{
// view layer seemingly was not added, failed
return false;
}
// actually erase from container
maViewShapes.erase( aIter, aEnd );
return true;
}
bool BackgroundShape::clearAllViewLayers()
{
maViewShapes.clear();
return true;
}
::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(),
::boost::bind( &ViewBackgroundShape::render,
_1,
::boost::cref( 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 ShapeSharedPtr(
new BackgroundShape(
xDrawPage,
xMasterPage,
rContext ));
}
}
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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