office-gobmx/include/svx/xmlgrhlp.hxx
Michael Stahl 86c0f58b6f tdf#92796 ODF import: remove unused bitmap fills
With CWS impress64 a partial fix for this was implemented to drop
unreferenced named items including all non-color fills after ODF import,
but this is only done in sd so move the code that does that to svx and
call it from sc and sw as well.

Implement some UNO interface for this, it's at least better than a magic
string, and not obvious how a better solution would look like since it's
known only at the end of the import if a bitmap is used or not.

Another problem: when the Area tab is used to change to a different kind
of fill, the items with the details for the previous fill aren't
cleared, and so they are written to ODF files.  Hence bitmaps in the
file can be referenced even if they aren't actually used, and bloat up
the files.

Fix this by dropping all unused draw:fill-image-name attributes in ODF
import.

Also do the same for Gradient and Hatch fills; Transparency gradients
can be combined with anything so leave them as they are.

Change-Id: I0b591fd9f963d974d0c3e7208b99621ad61dd93c
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/118950
Tested-by: Jenkins
Reviewed-by: Michael Stahl <michael.stahl@allotropia.de>
2021-07-16 18:48:46 +02:00

131 lines
6 KiB
C++

/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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#ifndef INCLUDED_SVX_XMLGRHLP_HXX
#define INCLUDED_SVX_XMLGRHLP_HXX
#include <cppuhelper/compbase.hxx>
#include <osl/mutex.hxx>
#include <vcl/graph.hxx>
#include <rtl/ref.hxx>
#include <string_view>
#include <vector>
#include <unordered_map>
#include <utility>
#include <com/sun/star/document/XGraphicObjectResolver.hpp>
#include <com/sun/star/document/XGraphicStorageHandler.hpp>
#include <com/sun/star/document/XBinaryStreamResolver.hpp>
#include <com/sun/star/embed/XStorage.hpp>
#include <svx/svxdllapi.h>
enum class SvXMLGraphicHelperMode
{
Read, Write
};
struct SvxGraphicHelperStream_Impl
{
css::uno::Reference < css::embed::XStorage > xStorage;
css::uno::Reference < css::io::XStream > xStream;
};
class SVXCORE_DLLPUBLIC SvXMLGraphicHelper final : public cppu::WeakComponentImplHelper<css::document::XGraphicObjectResolver,
css::document::XGraphicStorageHandler,
css::document::XBinaryStreamResolver>
{
private:
::osl::Mutex maMutex;
css::uno::Reference < css::embed::XStorage > mxRootStorage;
OUString maCurStorageName;
std::vector< css::uno::Reference< css::io::XOutputStream > >
maGrfStms;
std::unordered_map<OUString, css::uno::Reference<css::graphic::XGraphic>> maGraphicObjects;
std::unordered_map<Graphic, std::pair<OUString, OUString>> maExportGraphics;
SvXMLGraphicHelperMode meCreateMode;
OUString maOutputMimeType;
SVX_DLLPRIVATE static bool ImplGetStreamNames( const OUString& rURLStr,
OUString& rPictureStorageName,
OUString& rPictureStreamName );
SVX_DLLPRIVATE css::uno::Reference < css::embed::XStorage >
ImplGetGraphicStorage( const OUString& rPictureStorageName );
SVX_DLLPRIVATE SvxGraphicHelperStream_Impl
ImplGetGraphicStream( const OUString& rPictureStorageName,
const OUString& rPictureStreamName );
SVX_DLLPRIVATE static OUString ImplGetGraphicMimeType( const OUString& rFileName );
SVX_DLLPRIVATE Graphic ImplReadGraphic( const OUString& rPictureStorageName,
const OUString& rPictureStreamName );
SvXMLGraphicHelper();
virtual ~SvXMLGraphicHelper() override;
void Init( const css::uno::Reference < css::embed::XStorage >& xXMLStorage,
SvXMLGraphicHelperMode eCreateMode,
const OUString& rGraphicMimeType = OUString() );
virtual void SAL_CALL disposing() override;
SVX_DLLPRIVATE OUString implSaveGraphic(css::uno::Reference<css::graphic::XGraphic> const & rxGraphic,
OUString & rOutMimeType,
std::u16string_view rRequestName);
public:
SvXMLGraphicHelper( SvXMLGraphicHelperMode eCreateMode );
static rtl::Reference<SvXMLGraphicHelper> Create( const css::uno::Reference < css::embed::XStorage >& rXMLStorage,
SvXMLGraphicHelperMode eCreateMode );
static rtl::Reference<SvXMLGraphicHelper> Create( SvXMLGraphicHelperMode eCreateMode,
const OUString& rMimeType = OUString() );
public:
// XGraphicObjectResolver
virtual OUString SAL_CALL resolveGraphicObjectURL( const OUString& aURL ) override;
// XGraphicStorageHandler
virtual css::uno::Reference<css::graphic::XGraphic> SAL_CALL
loadGraphic(OUString const & aURL) override;
virtual css::uno::Reference<css::graphic::XGraphic> SAL_CALL
loadGraphicFromOutputStream(css::uno::Reference<css::io::XOutputStream> const & rxOutputStream) override;
virtual OUString SAL_CALL
saveGraphic(css::uno::Reference<css::graphic::XGraphic> const & rxGraphic) override;
virtual OUString SAL_CALL
saveGraphicByName(css::uno::Reference<css::graphic::XGraphic> const & rxGraphic, OUString & rOutSavedMimeType, OUString const & rRequestName) override;
virtual css::uno::Reference<css::io::XInputStream> SAL_CALL
createInputStream(css::uno::Reference<css::graphic::XGraphic> const & rxGraphic) override;
// XBinaryStreamResolver
virtual css::uno::Reference< css::io::XInputStream > SAL_CALL getInputStream( const OUString& rURL ) override;
virtual css::uno::Reference< css::io::XOutputStream > SAL_CALL createOutputStream( ) override;
virtual OUString SAL_CALL resolveOutputStream( const css::uno::Reference< css::io::XOutputStream >& rxBinaryStream ) override;
};
namespace svx {
SVXCORE_DLLPUBLIC void DropUnusedNamedItems(css::uno::Reference<css::uno::XInterface> const& xModel);
}
#endif
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */