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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 <sal/log.hxx>
+#include "gdimtftools.hxx"
+
+#include <com/sun/star/graphic/XGraphic.hpp>
+#include <com/sun/star/graphic/XGraphicRenderer.hpp>
+#include <com/sun/star/drawing/GraphicExportFilter.hpp>
+
+#include <cppuhelper/basemutex.hxx>
+#include <cppuhelper/compbase.hxx>
+
+#include <comphelper/fileformat.h>
+
+#include <vcl/canvastools.hxx>
+#include <vcl/metaact.hxx>
+#include <vcl/virdev.hxx>
+#include <vcl/gdimtf.hxx>
+#include <vcl/animate/Animation.hxx>
+#include <vcl/graph.hxx>
+
+#include <tools.hxx>
+
+using namespace ::com::sun::star;
+
+
+// free support functions
+// ======================
+
+namespace slideshow::internal
+{
+// TODO(E2): Detect the case when svx/drawing layer is not
+// in-process, or even not on the same machine, and
+// fallback to metafile streaming!
+
+// For fixing #i48102#, have to be a _lot_ more selective
+// on which metafiles to convert to bitmaps. The problem
+// here is that we _always_ get the shape content as a
+// metafile, even if we have a bitmap graphic shape. Thus,
+// calling GetBitmapEx on such a Graphic (see below) will
+// result in one poorly scaled bitmap into another,
+// somewhat arbitrarily sized bitmap.
+static bool hasUnsupportedActions( const GDIMetaFile& rMtf )
+{
+ // search metafile for RasterOp action
+ MetaAction* pCurrAct;
+
+ // TODO(Q3): avoid const-cast
+ for( pCurrAct = const_cast<GDIMetaFile&>(rMtf).FirstAction();
+ pCurrAct;
+ pCurrAct = const_cast<GDIMetaFile&>(rMtf).NextAction() )
+ {
+ switch( pCurrAct->GetType() )
+ {
+ case MetaActionType::RASTEROP:
+ // overpaint is okay - that's the default, anyway
+ if( RasterOp::OverPaint ==
+ static_cast<MetaRasterOpAction*>(pCurrAct)->GetRasterOp() )
+ {
+ break;
+ }
+ [[fallthrough]];
+ case MetaActionType::MOVECLIPREGION:
+ case MetaActionType::REFPOINT:
+ case MetaActionType::WALLPAPER:
+ return true; // at least one unsupported
+ // action encountered
+ default: break;
+ }
+ }
+
+ return false; // no unsupported action found
+}
+
+namespace {
+
+typedef ::cppu::WeakComponentImplHelper< graphic::XGraphicRenderer > DummyRenderer_Base;
+
+class DummyRenderer: public cppu::BaseMutex, public DummyRenderer_Base
+{
+public:
+ DummyRenderer() :
+ DummyRenderer_Base( m_aMutex ),
+ mxGraphic()
+ {
+ }
+
+ //--- XGraphicRenderer -----------------------------------
+ virtual void SAL_CALL render( const uno::Reference< graphic::XGraphic >& rGraphic ) override
+ {
+ ::osl::MutexGuard aGuard( m_aMutex );
+ mxGraphic = rGraphic;
+ }
+
+ /** Retrieve GDIMetaFile from renderer
+
+ @param bForeignSource
+ When true, the source of the metafile might be a
+ foreign application. The metafile is checked
+ against unsupported content, and, if necessary,
+ returned as a pre-rendered bitmap.
+ */
+ GDIMetaFileSharedPtr getMtf( bool bForeignSource ) const
+ {
+ ::osl::MutexGuard aGuard( m_aMutex );
+
+ Graphic aGraphic( mxGraphic );
+
+ if( aGraphic.GetType() == GraphicType::Bitmap ||
+ (bForeignSource &&
+ hasUnsupportedActions(aGraphic.GetGDIMetaFile()) ) )
+ {
+ // wrap bitmap into GDIMetafile
+ GDIMetaFileSharedPtr xMtf = std::make_shared<GDIMetaFile>();
+
+ ::BitmapEx aBmpEx( aGraphic.GetBitmapEx() );
+
+ xMtf->AddAction( new MetaBmpExAction( Point(),
+ aBmpEx ) );
+ xMtf->SetPrefSize( aBmpEx.GetPrefSize() );
+ xMtf->SetPrefMapMode( aBmpEx.GetPrefMapMode() );
+
+ return xMtf;
+ }
+ return std::make_shared<GDIMetaFile>(aGraphic.GetGDIMetaFile());
+ }
+
+private:
+ uno::Reference< graphic::XGraphic > mxGraphic;
+};
+
+} // anon namespace
+
+// Quick'n'dirty way: tunnel Graphic (only works for
+// in-process slideshow, of course)
+GDIMetaFileSharedPtr getMetaFile( const uno::Reference< lang::XComponent >& xSource,
+ const uno::Reference< drawing::XDrawPage >& xContainingPage,
+ int mtfLoadFlags,
+ const uno::Reference< uno::XComponentContext >& rxContext )
+{
+ if (!rxContext.is())
+ {
+ SAL_WARN("slideshow.opengl", "getMetaFile(): Invalid context" );
+ return GDIMetaFileSharedPtr();
+ }
+
+ // create dummy XGraphicRenderer, which receives the
+ // generated XGraphic from the GraphicExporter
+
+ // TODO(P3): Move creation of DummyRenderer out of the
+ // loop! Either by making it static, or transforming
+ // the whole thing here into a class.
+ DummyRenderer* pRenderer( new DummyRenderer() );
+ uno::Reference< graphic::XGraphicRenderer > xRenderer( pRenderer );
+
+ // creating the graphic exporter
+ uno::Reference< drawing::XGraphicExportFilter > xExporter =
+ drawing::GraphicExportFilter::create(rxContext);
+
+ uno::Sequence< beans::PropertyValue > aProps(3);
+ aProps[0].Name = "FilterName";
+ aProps[0].Value <<= OUString("SVM");
+
+ aProps[1].Name = "GraphicRenderer";
+ aProps[1].Value <<= xRenderer;
+
+ uno::Sequence< beans::PropertyValue > aFilterData(4);
+ aFilterData[0].Name = "ScrollText";
+ aFilterData[0].Value <<= ((mtfLoadFlags & MTF_LOAD_SCROLL_TEXT_MTF) != 0);
+
+ aFilterData[1].Name = "ExportOnlyBackground";
+ aFilterData[1].Value <<= ((mtfLoadFlags & MTF_LOAD_BACKGROUND_ONLY) != 0);
+
+ aFilterData[2].Name = "Version";
+ aFilterData[2].Value <<= static_cast<sal_Int32>( SOFFICE_FILEFORMAT_50 );
+
+ aFilterData[3].Name = "CurrentPage";
+ aFilterData[3].Value <<= uno::Reference< uno::XInterface >( xContainingPage,
+ uno::UNO_QUERY_THROW );
+
+ aProps[2].Name = "FilterData";
+ aProps[2].Value <<= aFilterData;
+
+ xExporter->setSourceDocument( xSource );
+ if( !xExporter->filter( aProps ) )
+ return GDIMetaFileSharedPtr();
+
+ GDIMetaFileSharedPtr xMtf = pRenderer->getMtf( (mtfLoadFlags & MTF_LOAD_FOREIGN_SOURCE) != 0 );
+
+ // pRenderer is automatically destroyed when xRenderer
+ // goes out of scope
+
+ // TODO(E3): Error handling. Exporter might have
+ // generated nothing, a bitmap, threw an exception,
+ // whatever.
+ return xMtf;
+}
+
+sal_Int32 getNextActionOffset( MetaAction * pCurrAct )
+{
+ // Special handling for actions that represent
+ // more than one indexable action
+ // ===========================================
+
+ switch (pCurrAct->GetType()) {
+ case MetaActionType::TEXT: {
+ MetaTextAction * pAct = static_cast<MetaTextAction *>(pCurrAct);
+ sal_Int32 nLen = std::min(pAct->GetLen(), pAct->GetText().getLength() - pAct->GetIndex());
+ return nLen;
+ }
+ case MetaActionType::TEXTARRAY: {
+ MetaTextArrayAction * pAct =
+ static_cast<MetaTextArrayAction *>(pCurrAct);
+ sal_Int32 nLen = std::min(pAct->GetLen(), pAct->GetText().getLength() - pAct->GetIndex());
+ return nLen;
+ }
+ case MetaActionType::STRETCHTEXT: {
+ MetaStretchTextAction * pAct =
+ static_cast<MetaStretchTextAction *>(pCurrAct);
+ sal_Int32 nLen = std::min(pAct->GetLen(), pAct->GetText().getLength() - pAct->GetIndex());
+ return nLen;
+ }
+ case MetaActionType::FLOATTRANSPARENT: {
+ MetaFloatTransparentAction * pAct =
+ static_cast<MetaFloatTransparentAction*>(pCurrAct);
+ // TODO(F2): Recurse into action metafile
+ // (though this is currently not used from the
+ // DrawingLayer - shape transparency gradients
+ // don't affect shape text)
+ return pAct->GetGDIMetaFile().GetActionSize();
+ }
+ default:
+ return 1;
+ }
+}
+
+bool getAnimationFromGraphic( VectorOfMtfAnimationFrames& o_rFrames,
+ sal_uInt32& o_rLoopCount,
+ const Graphic& rGraphic )
+{
+ o_rFrames.clear();
+
+ if( !rGraphic.IsAnimated() )
+ return false;
+
+ // some loop invariants
+ ::Animation aAnimation( rGraphic.GetAnimation() );
+ const Point aEmptyPoint;
+ const Size aAnimSize( aAnimation.GetDisplaySizePixel() );
+
+ // setup VDev, into which all bitmaps are painted (want to
+ // normalize animations to n bitmaps of same size. An Animation,
+ // though, can contain bitmaps of varying sizes and different
+ // update modes)
+ ScopedVclPtrInstance< VirtualDevice > pVDev;
+ pVDev->SetOutputSizePixel( aAnimSize );
+ pVDev->EnableMapMode( false );
+
+ // setup mask VDev (alpha VDev is currently rather slow)
+ ScopedVclPtrInstance<VirtualDevice> pVDevMask(DeviceFormat::BITMASK);
+ pVDevMask->SetOutputSizePixel( aAnimSize );
+ pVDevMask->EnableMapMode( false );
+
+ o_rLoopCount = aAnimation.GetLoopCount();
+
+ for( sal_uInt16 i=0, nCount=aAnimation.Count(); i<nCount; ++i )
+ {
+ const AnimationBitmap& rAnimationBitmap( aAnimation.Get(i) );
+ switch(rAnimationBitmap.meDisposal)
+ {
+ case Disposal::Not:
+ {
+ pVDev->DrawBitmapEx(rAnimationBitmap.maPositionPixel,
+ rAnimationBitmap.maBitmapEx);
+ Bitmap aMask = rAnimationBitmap.maBitmapEx.GetMask();
+
+ if( aMask.IsEmpty() )
+ {
+ const tools::Rectangle aRect(aEmptyPoint,
+ pVDevMask->GetOutputSizePixel());
+ const Wallpaper aWallpaper(COL_BLACK);
+ pVDevMask->DrawWallpaper(aRect,
+ aWallpaper);
+ }
+ else
+ {
+ BitmapEx aTmpMask(aMask, aMask);
+ pVDevMask->DrawBitmapEx(rAnimationBitmap.maPositionPixel,
+ aTmpMask );
+ }
+ break;
+ }
+
+ case Disposal::Back:
+ {
+ // #i70772# react on no mask
+ const Bitmap aMask(rAnimationBitmap.maBitmapEx.GetMask());
+ const Bitmap & rContent(rAnimationBitmap.maBitmapEx.GetBitmap());
+
+ pVDevMask->Erase();
+ pVDev->DrawBitmap(rAnimationBitmap.maPositionPixel, rContent);
+
+ if(aMask.IsEmpty())
+ {
+ const tools::Rectangle aRect(rAnimationBitmap.maPositionPixel, rContent.GetSizePixel());
+ pVDevMask->SetFillColor( COL_BLACK);
+ pVDevMask->SetLineColor();
+ pVDevMask->DrawRect(aRect);
+ }
+ else
+ {
+ pVDevMask->DrawBitmap(rAnimationBitmap.maPositionPixel, aMask);
+ }
+ break;
+ }
+
+ case Disposal::Previous :
+ {
+ pVDev->DrawBitmapEx(rAnimationBitmap.maPositionPixel,
+ rAnimationBitmap.maBitmapEx);
+ pVDevMask->DrawBitmap(rAnimationBitmap.maPositionPixel,
+ rAnimationBitmap.maBitmapEx.GetMask());
+ break;
+ }
+ }
+
+ // extract current aVDev content into a new animation
+ // frame
+ GDIMetaFileSharedPtr pMtf = std::make_shared<GDIMetaFile>();
+ pMtf->AddAction(
+ new MetaBmpExAction( aEmptyPoint,
+ BitmapEx(
+ pVDev->GetBitmap(
+ aEmptyPoint,
+ aAnimSize ),
+ pVDevMask->GetBitmap(
+ aEmptyPoint,
+ aAnimSize ))));
+
+ // setup mtf dimensions and pref map mode (for
+ // simplicity, keep it all in pixel. the metafile
+ // renderer scales it down to (1, 1) box anyway)
+ pMtf->SetPrefMapMode( MapMode() );
+ pMtf->SetPrefSize( aAnimSize );
+
+ // Take care of special value for MultiPage TIFFs. ATM these shall just
+ // show their first page for _quite_ some time.
+ sal_Int32 nWaitTime100thSeconds(rAnimationBitmap.mnWait);
+ if( ANIMATION_TIMEOUT_ON_CLICK == nWaitTime100thSeconds )
+ {
+ // ATM the huge value would block the timer, so use a long
+ // time to show first page (whole day)
+ nWaitTime100thSeconds = 100 * 60 * 60 * 24;
+ }
+
+ // There are animated GIFs with no WaitTime set. Take 0.1 sec, the
+ // same duration that is used by the edit view.
+ if( nWaitTime100thSeconds == 0 )
+ nWaitTime100thSeconds = 10;
+
+ o_rFrames.emplace_back( pMtf, nWaitTime100thSeconds / 100.0 );
+ }
+
+ return !o_rFrames.empty();
+}
+
+bool getRectanglesFromScrollMtf( ::basegfx::B2DRectangle& o_rScrollRect,
+ ::basegfx::B2DRectangle& o_rPaintRect,
+ const GDIMetaFileSharedPtr& rMtf )
+{
+ // extract bounds: scroll rect, paint rect
+ bool bScrollRectSet(false);
+ bool bPaintRectSet(false);
+
+ for ( MetaAction * pCurrAct = rMtf->FirstAction();
+ pCurrAct != nullptr; pCurrAct = rMtf->NextAction() )
+ {
+ if (pCurrAct->GetType() == MetaActionType::COMMENT)
+ {
+ MetaCommentAction * pAct =
+ static_cast<MetaCommentAction *>(pCurrAct);
+ // skip comment if not a special XTEXT... comment
+ if( pAct->GetComment().matchIgnoreAsciiCase( "XTEXT" ) )
+ {
+ if (pAct->GetComment().equalsIgnoreAsciiCase("XTEXT_SCROLLRECT"))
+ {
+ o_rScrollRect = vcl::unotools::b2DRectangleFromRectangle(
+ *reinterpret_cast<tools::Rectangle const *>(
+ pAct->GetData() ));
+
+ bScrollRectSet = true;
+ }
+ else if (pAct->GetComment().equalsIgnoreAsciiCase("XTEXT_PAINTRECT") )
+ {
+ o_rPaintRect = vcl::unotools::b2DRectangleFromRectangle(
+ *reinterpret_cast<tools::Rectangle const *>(
+ pAct->GetData() ));
+
+ bPaintRectSet = true;
+ }
+ }
+ }
+ }
+
+ return bScrollRectSet && bPaintRectSet;
+}
+
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-06 12:48:59 +0000