LCOV - code coverage report
Current view: top level - slideshow/source/engine/shapes - gdimtftools.cxx (source / functions) Hit Total Coverage
Test: commit 10e77ab3ff6f4314137acd6e2702a6e5c1ce1fae Lines: 1 152 0.7 %
Date: 2014-11-03 Functions: 2 12 16.7 %
Legend: Lines: hit not hit

          Line data    Source code
       1             : /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
       2             : /*
       3             :  * This file is part of the LibreOffice project.
       4             :  *
       5             :  * This Source Code Form is subject to the terms of the Mozilla Public
       6             :  * License, v. 2.0. If a copy of the MPL was not distributed with this
       7             :  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
       8             :  *
       9             :  * This file incorporates work covered by the following license notice:
      10             :  *
      11             :  *   Licensed to the Apache Software Foundation (ASF) under one or more
      12             :  *   contributor license agreements. See the NOTICE file distributed
      13             :  *   with this work for additional information regarding copyright
      14             :  *   ownership. The ASF licenses this file to you under the Apache
      15             :  *   License, Version 2.0 (the "License"); you may not use this file
      16             :  *   except in compliance with the License. You may obtain a copy of
      17             :  *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
      18             :  */
      19             : 
      20             : 
      21             : // must be first
      22             : #include <canvas/debug.hxx>
      23             : #include <tools/diagnose_ex.h>
      24             : #include <gdimtftools.hxx>
      25             : 
      26             : #include <com/sun/star/document/XExporter.hpp>
      27             : #include <com/sun/star/document/XFilter.hpp>
      28             : #include <com/sun/star/graphic/XGraphic.hpp>
      29             : #include <com/sun/star/graphic/XGraphicRenderer.hpp>
      30             : #include <com/sun/star/drawing/XShape.hpp>
      31             : #include <com/sun/star/drawing/GraphicExportFilter.hpp>
      32             : 
      33             : #include <cppuhelper/basemutex.hxx>
      34             : #include <cppuhelper/compbase1.hxx>
      35             : 
      36             : #include <comphelper/uno3.hxx>
      37             : #include <cppuhelper/implbase1.hxx>
      38             : 
      39             : #include <tools/stream.hxx>
      40             : #include <vcl/svapp.hxx>
      41             : #include <vcl/canvastools.hxx>
      42             : #include <vcl/metaact.hxx>
      43             : #include <vcl/virdev.hxx>
      44             : #include <vcl/gdimtf.hxx>
      45             : #include <vcl/animate.hxx>
      46             : #include <vcl/graph.hxx>
      47             : 
      48             : #include <unotools/streamwrap.hxx>
      49             : 
      50             : #include "tools.hxx"
      51             : 
      52             : using namespace ::com::sun::star;
      53             : 
      54             : 
      55             : // free support functions
      56             : // ======================
      57             : 
      58             : namespace slideshow
      59             : {
      60             : namespace internal
      61             : {
      62             : // TODO(E2): Detect the case when svx/drawing layer is not
      63             : // in-process, or even not on the same machine, and
      64             : // fallback to metafile streaming!
      65             : 
      66             : // For fixing #i48102#, have to be a _lot_ more selective
      67             : // on which metafiles to convert to bitmaps. The problem
      68             : // here is that we _always_ get the shape content as a
      69             : // metafile, even if we have a bitmap graphic shape. Thus,
      70             : // calling GetBitmapEx on such a Graphic (see below) will
      71             : // result in one poorly scaled bitmap into another,
      72             : // somewhat arbitrarily sized bitmap.
      73           0 : bool hasUnsupportedActions( const GDIMetaFile& rMtf )
      74             : {
      75             :     // search metafile for RasterOp action
      76             :     MetaAction* pCurrAct;
      77             : 
      78             :     // TODO(Q3): avoid const-cast
      79           0 :     for( pCurrAct = const_cast<GDIMetaFile&>(rMtf).FirstAction();
      80             :          pCurrAct;
      81             :          pCurrAct = const_cast<GDIMetaFile&>(rMtf).NextAction() )
      82             :     {
      83           0 :         switch( pCurrAct->GetType() )
      84             :         {
      85             :             case META_RASTEROP_ACTION:
      86             :                 // overpaint is okay - that's the default, anyway
      87           0 :                 if( ROP_OVERPAINT ==
      88           0 :                     static_cast<MetaRasterOpAction*>(pCurrAct)->GetRasterOp() )
      89             :                 {
      90           0 :                     break;
      91             :                 }
      92             :                 // FALLTHROUGH intended
      93             :             case META_MOVECLIPREGION_ACTION:
      94             :                 // FALLTHROUGH intended
      95             :             case META_REFPOINT_ACTION:
      96             :                 // FALLTHROUGH intended
      97             :             case META_WALLPAPER_ACTION:
      98           0 :                 return true; // at least one unsupported
      99             :                              // action encountered
     100             :         }
     101             :     }
     102             : 
     103           0 :     return false; // no unsupported action found
     104             : }
     105             : 
     106             : namespace {
     107             : 
     108             : typedef ::cppu::WeakComponentImplHelper1< graphic::XGraphicRenderer > DummyRenderer_Base;
     109             : 
     110           0 : class DummyRenderer :
     111             :         public DummyRenderer_Base,
     112             :         public cppu::BaseMutex
     113             : {
     114             : public:
     115           0 :     DummyRenderer() :
     116             :         DummyRenderer_Base( m_aMutex ),
     117           0 :         mxGraphic()
     118             :         {
     119           0 :         }
     120             : 
     121             :     //---  XGraphicRenderer  -----------------------------------
     122           0 :     virtual void SAL_CALL render( const uno::Reference< graphic::XGraphic >& rGraphic ) throw (uno::RuntimeException, std::exception) SAL_OVERRIDE
     123             :         {
     124           0 :             ::osl::MutexGuard aGuard( m_aMutex );
     125           0 :             mxGraphic = rGraphic;
     126           0 :         }
     127             : 
     128             :     /** Retrieve GDIMetaFile from renderer
     129             : 
     130             :         @param bForeignSource
     131             :         When true, the source of the metafile might be a
     132             :         foreign application. The metafile is checked
     133             :         against unsupported content, and, if necessary,
     134             :         returned as a pre-rendererd bitmap.
     135             :     */
     136           0 :     GDIMetaFile getMtf( bool bForeignSource ) const
     137             :     {
     138           0 :         ::osl::MutexGuard aGuard( m_aMutex );
     139             : 
     140           0 :         Graphic aGraphic( mxGraphic );
     141             : 
     142           0 :         if( aGraphic.GetType() == GRAPHIC_BITMAP ||
     143           0 :             (bForeignSource &&
     144           0 :              hasUnsupportedActions(aGraphic.GetGDIMetaFile()) ) )
     145             :         {
     146             :             // wrap bitmap into GDIMetafile
     147           0 :             GDIMetaFile     aMtf;
     148           0 :             ::Point         aEmptyPoint;
     149             : 
     150           0 :             ::BitmapEx      aBmpEx( aGraphic.GetBitmapEx() );
     151             : 
     152             :             aMtf.AddAction( new MetaBmpExAction( aEmptyPoint,
     153           0 :                                                  aBmpEx ) );
     154           0 :             aMtf.SetPrefSize( aBmpEx.GetPrefSize() );
     155           0 :             aMtf.SetPrefMapMode( aBmpEx.GetPrefMapMode() );
     156             : 
     157           0 :             return aMtf;
     158             :         }
     159             :         else
     160             :         {
     161           0 :             return aGraphic.GetGDIMetaFile();
     162           0 :         }
     163             :     }
     164             : 
     165             : private:
     166             :     uno::Reference< graphic::XGraphic > mxGraphic;
     167             : };
     168             : 
     169             : } // anon namespace
     170             : 
     171             : // Quick'n'dirty way: tunnel Graphic (only works for
     172             : // in-process slideshow, of course)
     173           0 : bool getMetaFile( const uno::Reference< lang::XComponent >&       xSource,
     174             :                   const uno::Reference< drawing::XDrawPage >&     xContainingPage,
     175             :                   GDIMetaFile&                                    rMtf,
     176             :                   int                                             mtfLoadFlags,
     177             :                   const uno::Reference< uno::XComponentContext >& rxContext )
     178             : {
     179           0 :     ENSURE_OR_RETURN_FALSE( rxContext.is(),
     180             :                        "getMetaFile(): Invalid context" );
     181             : 
     182             :     // create dummy XGraphicRenderer, which receives the
     183             :     // generated XGraphic from the GraphicExporter
     184             : 
     185             :     // TODO(P3): Move creation of DummyRenderer out of the
     186             :     // loop! Either by making it static, or transforming
     187             :     // the whole thing here into a class.
     188           0 :     DummyRenderer*                              pRenderer( new DummyRenderer() );
     189           0 :     uno::Reference< graphic::XGraphicRenderer > xRenderer( pRenderer );
     190             : 
     191             :     // creating the graphic exporter
     192             :     uno::Reference< drawing::XGraphicExportFilter > xExporter =
     193           0 :         drawing::GraphicExportFilter::create(rxContext);
     194             : 
     195           0 :     uno::Sequence< beans::PropertyValue > aProps(3);
     196           0 :     aProps[0].Name = "FilterName";
     197           0 :     aProps[0].Value <<= OUString("SVM");
     198             : 
     199           0 :     aProps[1].Name = "GraphicRenderer";
     200           0 :     aProps[1].Value <<= xRenderer;
     201             : 
     202           0 :     uno::Sequence< beans::PropertyValue > aFilterData(4);
     203           0 :     aFilterData[0].Name = "ScrollText";
     204           0 :     aFilterData[0].Value <<= ((mtfLoadFlags & MTF_LOAD_SCROLL_TEXT_MTF) != 0);
     205             : 
     206           0 :     aFilterData[1].Name = "ExportOnlyBackground";
     207           0 :     aFilterData[1].Value <<= ((mtfLoadFlags & MTF_LOAD_BACKGROUND_ONLY) != 0);
     208             : 
     209           0 :     aFilterData[2].Name = "Version";
     210           0 :     aFilterData[2].Value <<= static_cast<sal_Int32>( SOFFICE_FILEFORMAT_50 );
     211             : 
     212           0 :     aFilterData[3].Name = "CurrentPage";
     213           0 :     aFilterData[3].Value <<= uno::Reference< uno::XInterface >( xContainingPage,
     214           0 :                                                                 uno::UNO_QUERY_THROW );
     215             : 
     216           0 :     aProps[2].Name = "FilterData";
     217           0 :     aProps[2].Value <<= aFilterData;
     218             : 
     219           0 :     xExporter->setSourceDocument( xSource );
     220           0 :     if( !xExporter->filter( aProps ) )
     221           0 :         return false;
     222             : 
     223           0 :     rMtf = pRenderer->getMtf( (mtfLoadFlags & MTF_LOAD_FOREIGN_SOURCE) != 0 );
     224             : 
     225             :     // pRenderer is automatically destroyed when xRenderer
     226             :     // goes out of scope
     227             : 
     228             :     // TODO(E3): Error handling. Exporter might have
     229             :     // generated nothing, a bitmap, threw an exception,
     230             :     // whatever.
     231           0 :     return true;
     232             : }
     233             : 
     234           0 : sal_Int32 getNextActionOffset( MetaAction * pCurrAct )
     235             : {
     236             :     // Special handling for actions that represent
     237             :     // more than one indexable action
     238             :     // ===========================================
     239             : 
     240           0 :     switch (pCurrAct->GetType()) {
     241             :     case META_TEXT_ACTION: {
     242           0 :         MetaTextAction * pAct = static_cast<MetaTextAction *>(pCurrAct);
     243           0 :         sal_Int32 nLen = std::min(pAct->GetLen(), pAct->GetText().getLength() - pAct->GetIndex());
     244           0 :         return nLen;
     245             :     }
     246             :     case META_TEXTARRAY_ACTION: {
     247             :         MetaTextArrayAction * pAct =
     248           0 :             static_cast<MetaTextArrayAction *>(pCurrAct);
     249           0 :         sal_Int32 nLen = std::min(pAct->GetLen(), pAct->GetText().getLength() - pAct->GetIndex());
     250           0 :         return nLen;
     251             :     }
     252             :     case META_STRETCHTEXT_ACTION: {
     253             :         MetaStretchTextAction * pAct =
     254           0 :             static_cast<MetaStretchTextAction *>(pCurrAct);
     255           0 :         sal_Int32 nLen = std::min(pAct->GetLen(), pAct->GetText().getLength() - pAct->GetIndex());
     256           0 :         return nLen;
     257             :     }
     258             :     case META_FLOATTRANSPARENT_ACTION: {
     259             :         MetaFloatTransparentAction * pAct =
     260           0 :             static_cast<MetaFloatTransparentAction*>(pCurrAct);
     261             :         // TODO(F2): Recurse into action metafile
     262             :         // (though this is currently not used from the
     263             :         // DrawingLayer - shape transparency gradients
     264             :         // don't affect shape text)
     265           0 :         return pAct->GetGDIMetaFile().GetActionSize();
     266             :     }
     267             :     default:
     268           0 :         return 1;
     269             :     }
     270             : }
     271             : 
     272           0 : bool getAnimationFromGraphic( VectorOfMtfAnimationFrames&   o_rFrames,
     273             :                               ::std::size_t&                o_rLoopCount,
     274             :                               CycleMode&                    o_eCycleMode,
     275             :                               const Graphic&                rGraphic )
     276             : {
     277           0 :     o_rFrames.clear();
     278             : 
     279           0 :     if( !rGraphic.IsAnimated() )
     280           0 :         return false;
     281             : 
     282             :     // some loop invariants
     283           0 :     Animation   aAnimation( rGraphic.GetAnimation() );
     284           0 :     const Point aEmptyPoint;
     285           0 :     const Size  aAnimSize( aAnimation.GetDisplaySizePixel() );
     286             : 
     287             :     // setup VDev, into which all bitmaps are painted (want to
     288             :     // normalize animations to n bitmaps of same size. An Animation,
     289             :     // though, can contain bitmaps of varying sizes and different
     290             :     // update modes)
     291           0 :     VirtualDevice aVDev;
     292           0 :     aVDev.SetOutputSizePixel( aAnimSize );
     293           0 :     aVDev.EnableMapMode( false );
     294             : 
     295             :     // setup mask VDev (alpha VDev is currently rather slow)
     296           0 :     VirtualDevice aVDevMask;
     297           0 :     aVDevMask.SetOutputSizePixel( aAnimSize );
     298           0 :     aVDevMask.EnableMapMode( false );
     299             : 
     300           0 :     switch( aAnimation.GetCycleMode() )
     301             :     {
     302             :         case CYCLE_NOT:
     303           0 :             o_rLoopCount = 1;
     304           0 :             o_eCycleMode = CYCLE_LOOP;
     305           0 :             break;
     306             : 
     307             :         case CYCLE_FALLBACK:
     308             :             // FALLTHROUGH intended
     309             :         case CYCLE_NORMAL:
     310           0 :             o_rLoopCount = aAnimation.GetLoopCount();
     311           0 :             o_eCycleMode = CYCLE_LOOP;
     312           0 :             break;
     313             : 
     314             :         case CYCLE_REVERS:
     315             :             // FALLTHROUGH intended
     316             :         case CYCLE_REVERS_FALLBACK:
     317           0 :             o_rLoopCount = aAnimation.GetLoopCount();
     318           0 :             o_eCycleMode = CYCLE_PINGPONGLOOP;
     319           0 :             break;
     320             : 
     321             :         default:
     322           0 :             ENSURE_OR_RETURN_FALSE(false,
     323             :                               "getAnimationFromGraphic(): Unexpected case" );
     324             :             break;
     325             :     }
     326             : 
     327           0 :     for( sal_uInt16 i=0, nCount=aAnimation.Count(); i<nCount; ++i )
     328             :     {
     329           0 :         const AnimationBitmap& rAnimBmp( aAnimation.Get(i) );
     330           0 :         switch(rAnimBmp.eDisposal)
     331             :         {
     332             :             case DISPOSE_NOT:
     333             :             {
     334             :                 aVDev.DrawBitmapEx(rAnimBmp.aPosPix,
     335           0 :                                    rAnimBmp.aBmpEx);
     336           0 :                 Bitmap aMask = rAnimBmp.aBmpEx.GetMask();
     337             : 
     338           0 :                 if( aMask.IsEmpty() )
     339             :                 {
     340             :                     const Rectangle aRect(aEmptyPoint,
     341           0 :                                           aVDevMask.GetOutputSizePixel());
     342           0 :                     const Wallpaper aWallpaper(COL_BLACK);
     343             :                     aVDevMask.DrawWallpaper(aRect,
     344           0 :                                             aWallpaper);
     345             :                 }
     346             :                 else
     347             :                 {
     348             :                     BitmapEx aTmpMask = BitmapEx(aMask,
     349           0 :                                                  aMask);
     350             :                     aVDevMask.DrawBitmapEx(rAnimBmp.aPosPix,
     351           0 :                                            aTmpMask );
     352             :                 }
     353           0 :                 break;
     354             :             }
     355             : 
     356             :             case DISPOSE_BACK:
     357             :             {
     358             :                 // #i70772# react on no mask
     359           0 :                 const Bitmap aMask(rAnimBmp.aBmpEx.GetMask());
     360           0 :                 const Bitmap aContent(rAnimBmp.aBmpEx.GetBitmap());
     361             : 
     362           0 :                 aVDevMask.Erase();
     363           0 :                 aVDev.DrawBitmap(rAnimBmp.aPosPix, aContent);
     364             : 
     365           0 :                 if(aMask.IsEmpty())
     366             :                 {
     367           0 :                     const Rectangle aRect(rAnimBmp.aPosPix, aContent.GetSizePixel());
     368           0 :                     aVDevMask.SetFillColor(COL_BLACK);
     369           0 :                     aVDevMask.SetLineColor();
     370           0 :                     aVDevMask.DrawRect(aRect);
     371             :                 }
     372             :                 else
     373             :                 {
     374           0 :                     aVDevMask.DrawBitmap(rAnimBmp.aPosPix, aMask);
     375             :                 }
     376           0 :                 break;
     377             :             }
     378             : 
     379             :             case DISPOSE_FULL:
     380             :             {
     381             :                 aVDev.DrawBitmapEx(rAnimBmp.aPosPix,
     382           0 :                                    rAnimBmp.aBmpEx);
     383           0 :                 break;
     384             :             }
     385             : 
     386             :             case DISPOSE_PREVIOUS :
     387             :             {
     388             :                 aVDev.DrawBitmapEx(rAnimBmp.aPosPix,
     389           0 :                                    rAnimBmp.aBmpEx);
     390             :                 aVDevMask.DrawBitmap(rAnimBmp.aPosPix,
     391           0 :                                      rAnimBmp.aBmpEx.GetMask());
     392           0 :                 break;
     393             :             }
     394             :         }
     395             : 
     396             :         // extract current aVDev content into a new animation
     397             :         // frame
     398           0 :         GDIMetaFileSharedPtr pMtf( new GDIMetaFile() );
     399             :         pMtf->AddAction(
     400             :             new MetaBmpExAction( aEmptyPoint,
     401             :                                  BitmapEx(
     402             :                                      aVDev.GetBitmap(
     403             :                                          aEmptyPoint,
     404             :                                          aAnimSize ),
     405             :                                      aVDevMask.GetBitmap(
     406             :                                          aEmptyPoint,
     407           0 :                                          aAnimSize ))));
     408             : 
     409             :         // setup mtf dimensions and pref map mode (for
     410             :         // simplicity, keep it all in pixel. the metafile
     411             :         // renderer scales it down to (1, 1) box anyway)
     412           0 :         pMtf->SetPrefMapMode( MapMode() );
     413           0 :         pMtf->SetPrefSize( aAnimSize );
     414             : 
     415             :         // Take care of special value for MultiPage TIFFs. ATM these shall just
     416             :         // show their first page for _quite_ some time.
     417           0 :         sal_Int32 nWaitTime100thSeconds( rAnimBmp.nWait );
     418           0 :         if( ANIMATION_TIMEOUT_ON_CLICK == nWaitTime100thSeconds )
     419             :         {
     420             :             // ATM the huge value would block the timer, so use a long
     421             :             // time to show first page (whole day)
     422           0 :             nWaitTime100thSeconds = 100 * 60 * 60 * 24;
     423             :         }
     424             : 
     425             :         // There are animated GIFs with no WaitTime set. Take 0.1 sec, the
     426             :         // same duration that is used by the edit view.
     427           0 :         if( nWaitTime100thSeconds == 0 )
     428           0 :             nWaitTime100thSeconds = 10;
     429             : 
     430             :         o_rFrames.push_back( MtfAnimationFrame( pMtf,
     431           0 :                                                 nWaitTime100thSeconds / 100.0 ) );
     432           0 :     }
     433             : 
     434           0 :     return !o_rFrames.empty();
     435             : }
     436             : 
     437           0 : bool getRectanglesFromScrollMtf( ::basegfx::B2DRectangle&       o_rScrollRect,
     438             :                                  ::basegfx::B2DRectangle&       o_rPaintRect,
     439             :                                  const GDIMetaFileSharedPtr&    rMtf )
     440             : {
     441             :     // extract bounds: scroll rect, paint rect
     442           0 :     bool bScrollRectSet(false);
     443           0 :     bool bPaintRectSet(false);
     444             : 
     445           0 :     for ( MetaAction * pCurrAct = rMtf->FirstAction();
     446           0 :           pCurrAct != 0; pCurrAct = rMtf->NextAction() )
     447             :     {
     448           0 :         if (pCurrAct->GetType() == META_COMMENT_ACTION)
     449             :         {
     450             :             MetaCommentAction * pAct =
     451           0 :                 static_cast<MetaCommentAction *>(pCurrAct);
     452             :             // skip comment if not a special XTEXT... comment
     453           0 :             if( pAct->GetComment().matchIgnoreAsciiCase( OString("XTEXT"), 0 ) )
     454             :             {
     455           0 :                 if (pAct->GetComment().equalsIgnoreAsciiCase("XTEXT_SCROLLRECT"))
     456             :                 {
     457             :                     o_rScrollRect = ::vcl::unotools::b2DRectangleFromRectangle(
     458             :                         *reinterpret_cast<Rectangle const *>(
     459           0 :                             pAct->GetData() ) );
     460             : 
     461           0 :                     bScrollRectSet = true;
     462             :                 }
     463           0 :                 else if (pAct->GetComment().equalsIgnoreAsciiCase("XTEXT_PAINTRECT") )
     464             :                 {
     465             :                     o_rPaintRect = ::vcl::unotools::b2DRectangleFromRectangle(
     466             :                         *reinterpret_cast<Rectangle const *>(
     467           0 :                             pAct->GetData() ) );
     468             : 
     469           0 :                     bPaintRectSet = true;
     470             :                 }
     471             :             }
     472             :         }
     473             :     }
     474             : 
     475           0 :     return bScrollRectSet && bPaintRectSet;
     476             : }
     477             : 
     478             : }
     479           6 : }
     480             : 
     481             : /* vim:set shiftwidth=4 softtabstop=4 expandtab: */

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