basegfx/source/tools/unopolypolygon.cxx

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  27
  28 // MARKER(update_precomp.py): autogen include statement, do not remove
  29 #include "precompiled_basegfx.hxx"
  30
  31 #include <com/sun/star/geometry/AffineMatrix2D.hpp>
  32 #include <com/sun/star/rendering/RenderState.hpp>
  33 #include <com/sun/star/rendering/ViewState.hpp>
  34 #include <com/sun/star/rendering/XCanvas.hpp>
  35 #include <com/sun/star/rendering/CompositeOperation.hpp>
  36
  37 #include <basegfx/matrix/b2dhommatrix.hxx>
  38 #include <basegfx/range/b2drange.hxx>
  39 #include <basegfx/range/b2drectangle.hxx>
  40 #include <basegfx/point/b2dpoint.hxx>
  41 #include <basegfx/tools/canvastools.hxx>
  42 #include <basegfx/polygon/b2dpolygon.hxx>
  43 #include <basegfx/polygon/b2dpolypolygontools.hxx>
  44 #include <basegfx/tools/unopolypolygon.hxx>
  45 #include <basegfx/matrix/b2dhommatrixtools.hxx>
  46
  47
  48 using namespace ::com::sun::star;
  49
  50 namespace basegfx
  51 {
  52 namespace unotools
  53 {
  54     UnoPolyPolygon::UnoPolyPolygon( const B2DPolyPolygon& rPolyPoly ) :
  55         UnoPolyPolygonBase( m_aMutex ),
  56         maPolyPoly( rPolyPoly ),
  57         meFillRule( rendering::FillRule_EVEN_ODD )
  58     {
  59         // or else races will haunt us.
  60         maPolyPoly.makeUnique();
  61     }
  62
  63     void SAL_CALL UnoPolyPolygon::addPolyPolygon(
  64         const geometry::RealPoint2D&                        position,
  65         const uno::Reference< rendering::XPolyPolygon2D >&  polyPolygon ) throw (lang::IllegalArgumentException,uno::RuntimeException)
  66     {
  67         osl::MutexGuard const guard( m_aMutex );
  68         modifying();
  69
  70         // TODO(F1): Correctly fulfill the UNO API
  71         // specification. This will probably result in a vector of
  72         // poly-polygons to be stored in this object.
  73
  74         const sal_Int32 nPolys( polyPolygon->getNumberOfPolygons() );
  75
  76         if( !polyPolygon.is() || !nPolys )
  77         {
  78             // invalid or empty polygon - nothing to do.
  79             return;
  80         }
  81
  82         B2DPolyPolygon        aSrcPoly;
  83         const UnoPolyPolygon* pSrc( dynamic_cast< UnoPolyPolygon* >(polyPolygon.get()) );
  84
  85         // try to extract polygon data from interface. First,
  86         // check whether it's the same implementation object,
  87         // which we can tunnel then.
  88         if( pSrc )
  89         {
  90             aSrcPoly = pSrc->getPolyPolygon();
  91         }
  92         else
  93         {
  94             // not a known implementation object - try data source
  95             // interfaces
  96             uno::Reference< rendering::XBezierPolyPolygon2D > xBezierPoly(
  97                 polyPolygon,
  98                 uno::UNO_QUERY );
  99
 100             if( xBezierPoly.is() )
 101             {
 102                 aSrcPoly = unotools::polyPolygonFromBezier2DSequenceSequence(
 103                     xBezierPoly->getBezierSegments( 0,
 104                                                     nPolys,
 105                                                     0,
 106                                                     -1 ) );
 107             }
 108             else
 109             {
 110                 uno::Reference< rendering::XLinePolyPolygon2D > xLinePoly(
 111                     polyPolygon,
 112                     uno::UNO_QUERY );
 113
 114                 // no implementation class and no data provider
 115                 // found - contract violation.
 116                 if( !xLinePoly.is() )
 117                     throw lang::IllegalArgumentException(
 118                         ::rtl::OUString(
 119                             RTL_CONSTASCII_USTRINGPARAM(
 120                                 "UnoPolyPolygon::addPolyPolygon(): Invalid input "
 121                                 "poly-polygon, cannot retrieve vertex data")),
 122                         static_cast<cppu::OWeakObject*>(this), 1);
 123
 124                 aSrcPoly = unotools::polyPolygonFromPoint2DSequenceSequence(
 125                     xLinePoly->getPoints( 0,
 126                                           nPolys,
 127                                           0,
 128                                           -1 ) );
 129             }
 130         }
 131
 132         const B2DRange  aBounds( tools::getRange( aSrcPoly ) );
 133         const B2DVector     aOffset( unotools::b2DPointFromRealPoint2D( position ) -
 134                                              aBounds.getMinimum() );
 135
 136         if( !aOffset.equalZero() )
 137         {
 138             const B2DHomMatrix aTranslate(tools::createTranslateB2DHomMatrix(aOffset));
 139             aSrcPoly.transform( aTranslate );
 140         }
 141
 142         maPolyPoly.append( aSrcPoly );
 143     }
 144
 145     sal_Int32 SAL_CALL UnoPolyPolygon::getNumberOfPolygons() throw (uno::RuntimeException)
 146     {
 147         osl::MutexGuard const guard( m_aMutex );
 148         return maPolyPoly.count();
 149     }
 150
 151     sal_Int32 SAL_CALL UnoPolyPolygon::getNumberOfPolygonPoints(
 152         sal_Int32 polygon ) throw (lang::IndexOutOfBoundsException,uno::RuntimeException)
 153     {
 154         osl::MutexGuard const guard( m_aMutex );
 155         checkIndex( polygon );
 156
 157         return maPolyPoly.getB2DPolygon(polygon).count();
 158     }
 159
 160     rendering::FillRule SAL_CALL UnoPolyPolygon::getFillRule() throw (uno::RuntimeException)
 161     {
 162         osl::MutexGuard const guard( m_aMutex );
 163         return meFillRule;
 164     }
 165
 166     void SAL_CALL UnoPolyPolygon::setFillRule(
 167         rendering::FillRule fillRule ) throw (uno::RuntimeException)
 168     {
 169         osl::MutexGuard const guard( m_aMutex );
 170         modifying();
 171
 172         meFillRule = fillRule;
 173     }
 174
 175     sal_Bool SAL_CALL UnoPolyPolygon::isClosed(
 176         sal_Int32 index ) throw (lang::IndexOutOfBoundsException,uno::RuntimeException)
 177     {
 178         osl::MutexGuard const guard( m_aMutex );
 179         checkIndex( index );
 180
 181         return maPolyPoly.getB2DPolygon(index).isClosed();
 182     }
 183
 184     void SAL_CALL UnoPolyPolygon::setClosed(
 185         sal_Int32 index,
 186         sal_Bool closedState ) throw (lang::IndexOutOfBoundsException,uno::RuntimeException)
 187     {
 188         osl::MutexGuard const guard( m_aMutex );
 189         modifying();
 190
 191         if( index == -1L )
 192         {
 193             // set all
 194             maPolyPoly.setClosed( closedState );
 195         }
 196         else
 197         {
 198             checkIndex( index );
 199
 200             // fetch referenced polygon, change state
 201             B2DPolygon aTmp( maPolyPoly.getB2DPolygon(index) );
 202             aTmp.setClosed( closedState );
 203
 204             // set back to container
 205             maPolyPoly.setB2DPolygon( index, aTmp );
 206         }
 207     }
 208
 209     uno::Sequence< uno::Sequence< geometry::RealPoint2D > > SAL_CALL UnoPolyPolygon::getPoints(
 210         sal_Int32 nPolygonIndex,
 211         sal_Int32 nNumberOfPolygons,
 212         sal_Int32 nPointIndex,
 213         sal_Int32 nNumberOfPoints ) throw (lang::IndexOutOfBoundsException,uno::RuntimeException)
 214     {
 215         osl::MutexGuard const guard( m_aMutex );
 216
 217         return unotools::pointSequenceSequenceFromB2DPolyPolygon(
 218             getSubsetPolyPolygon( nPolygonIndex,
 219                                   nNumberOfPolygons,
 220                                   nPointIndex,
 221                                   nNumberOfPoints ) );
 222     }
 223
 224     void SAL_CALL UnoPolyPolygon::setPoints(
 225         const uno::Sequence< uno::Sequence< geometry::RealPoint2D > >& points,
 226         sal_Int32 nPolygonIndex ) throw (lang::IndexOutOfBoundsException,uno::RuntimeException)
 227     {
 228         osl::MutexGuard const guard( m_aMutex );
 229         modifying();
 230
 231         const B2DPolyPolygon& rNewPolyPoly(
 232             unotools::polyPolygonFromPoint2DSequenceSequence( points ) );
 233
 234         if( nPolygonIndex == -1 )
 235         {
 236             maPolyPoly = rNewPolyPoly;
 237         }
 238         else
 239         {
 240             checkIndex( nPolygonIndex );
 241
 242             maPolyPoly.insert( nPolygonIndex, rNewPolyPoly );
 243         }
 244     }
 245
 246     geometry::RealPoint2D SAL_CALL UnoPolyPolygon::getPoint(
 247         sal_Int32 nPolygonIndex,
 248         sal_Int32 nPointIndex ) throw (lang::IndexOutOfBoundsException,uno::RuntimeException)
 249     {
 250         osl::MutexGuard const guard( m_aMutex );
 251         checkIndex( nPolygonIndex );
 252
 253         const B2DPolygon& rPoly( maPolyPoly.getB2DPolygon( nPolygonIndex ) );
 254
 255         if( nPointIndex < 0 || nPointIndex >= static_cast<sal_Int32>(rPoly.count()) )
 256             throw lang::IndexOutOfBoundsException();
 257
 258         return unotools::point2DFromB2DPoint( rPoly.getB2DPoint( nPointIndex ) );
 259     }
 260
 261     void SAL_CALL UnoPolyPolygon::setPoint(
 262         const geometry::RealPoint2D& point,
 263         sal_Int32 nPolygonIndex,
 264         sal_Int32 nPointIndex ) throw (lang::IndexOutOfBoundsException,uno::RuntimeException)
 265     {
 266         osl::MutexGuard const guard( m_aMutex );
 267         checkIndex( nPolygonIndex );
 268         modifying();
 269
 270         B2DPolygon aPoly( maPolyPoly.getB2DPolygon( nPolygonIndex ) );
 271
 272         if( nPointIndex < 0 || nPointIndex >= static_cast<sal_Int32>(aPoly.count()) )
 273             throw lang::IndexOutOfBoundsException();
 274
 275         aPoly.setB2DPoint( nPointIndex,
 276                            unotools::b2DPointFromRealPoint2D( point ) );
 277         maPolyPoly.setB2DPolygon( nPolygonIndex, aPoly );
 278     }
 279
 280     uno::Sequence< uno::Sequence< geometry::RealBezierSegment2D > > SAL_CALL UnoPolyPolygon::getBezierSegments(
 281         sal_Int32 nPolygonIndex,
 282         sal_Int32 nNumberOfPolygons,
 283         sal_Int32 nPointIndex,
 284         sal_Int32 nNumberOfPoints ) throw (lang::IndexOutOfBoundsException, uno::RuntimeException)
 285     {
 286         osl::MutexGuard const guard( m_aMutex );
 287         return unotools::bezierSequenceSequenceFromB2DPolyPolygon(
 288             getSubsetPolyPolygon( nPolygonIndex,
 289                                   nNumberOfPolygons,
 290                                   nPointIndex,
 291                                   nNumberOfPoints ) );
 292     }
 293
 294     void SAL_CALL UnoPolyPolygon::setBezierSegments(
 295         const uno::Sequence< uno::Sequence< geometry::RealBezierSegment2D > >&  points,
 296         sal_Int32                                                               nPolygonIndex ) throw (lang::IndexOutOfBoundsException,
 297                                                                                                        uno::RuntimeException)
 298     {
 299         osl::MutexGuard const guard( m_aMutex );
 300         modifying();
 301         const B2DPolyPolygon& rNewPolyPoly(
 302             unotools::polyPolygonFromBezier2DSequenceSequence( points ) );
 303
 304         if( nPolygonIndex == -1 )
 305         {
 306             maPolyPoly = rNewPolyPoly;
 307         }
 308         else
 309         {
 310             checkIndex( nPolygonIndex );
 311
 312             maPolyPoly.insert( nPolygonIndex, rNewPolyPoly );
 313         }
 314     }
 315
 316     geometry::RealBezierSegment2D SAL_CALL UnoPolyPolygon::getBezierSegment( sal_Int32 nPolygonIndex,
 317                                                                              sal_Int32 nPointIndex ) throw (lang::IndexOutOfBoundsException,
 318                                                                                                             uno::RuntimeException)
 319     {
 320         osl::MutexGuard const guard( m_aMutex );
 321         checkIndex( nPolygonIndex );
 322
 323         const B2DPolygon& rPoly( maPolyPoly.getB2DPolygon( nPolygonIndex ) );
 324         const sal_uInt32  nPointCount(rPoly.count());
 325
 326         if( nPointIndex < 0 || nPointIndex >= static_cast<sal_Int32>(nPointCount) )
 327             throw lang::IndexOutOfBoundsException();
 328
 329         const B2DPoint& rPt( rPoly.getB2DPoint( nPointIndex ) );
 330         const B2DPoint& rCtrl0( rPoly.getNextControlPoint(nPointIndex) );
 331         const B2DPoint& rCtrl1( rPoly.getPrevControlPoint((nPointIndex + 1) % nPointCount) );
 332
 333         return geometry::RealBezierSegment2D( rPt.getX(),
 334                                               rPt.getY(),
 335                                               rCtrl0.getX(),
 336                                               rCtrl0.getY(),
 337                                               rCtrl1.getX(),
 338                                               rCtrl1.getY() );
 339     }
 340
 341     void SAL_CALL UnoPolyPolygon::setBezierSegment( const geometry::RealBezierSegment2D& segment,
 342                                                          sal_Int32                       nPolygonIndex,
 343                                                          sal_Int32                       nPointIndex ) throw (lang::IndexOutOfBoundsException,
 344                                                                                                               uno::RuntimeException)
 345     {
 346         osl::MutexGuard const guard( m_aMutex );
 347         checkIndex( nPolygonIndex );
 348         modifying();
 349
 350         B2DPolygon aPoly( maPolyPoly.getB2DPolygon( nPolygonIndex ) );
 351         const sal_uInt32 nPointCount(aPoly.count());
 352
 353         if( nPointIndex < 0 || nPointIndex >= static_cast<sal_Int32>(nPointCount) )
 354             throw lang::IndexOutOfBoundsException();
 355
 356         aPoly.setB2DPoint( nPointIndex,
 357                            B2DPoint( segment.Px,
 358                                      segment.Py ) );
 359         aPoly.setNextControlPoint(nPointIndex,
 360                                   B2DPoint(segment.C1x, segment.C1y));
 361         aPoly.setPrevControlPoint((nPointIndex + 1) % nPointCount,
 362                                   B2DPoint(segment.C2x, segment.C2y));
 363
 364         maPolyPoly.setB2DPolygon( nPolygonIndex, aPoly );
 365     }
 366
 367     B2DPolyPolygon UnoPolyPolygon::getSubsetPolyPolygon(
 368         sal_Int32 nPolygonIndex,
 369         sal_Int32 nNumberOfPolygons,
 370         sal_Int32 nPointIndex,
 371         sal_Int32 nNumberOfPoints ) const
 372     {
 373         osl::MutexGuard const guard( m_aMutex );
 374         checkIndex( nPolygonIndex );
 375
 376         const sal_Int32 nPolyCount( maPolyPoly.count() );
 377
 378         // check for "full polygon" case
 379         if( !nPolygonIndex &&
 380             !nPointIndex &&
 381             nNumberOfPolygons == nPolyCount &&
 382             nNumberOfPoints == -1 )
 383         {
 384             return maPolyPoly;
 385         }
 386
 387         B2DPolyPolygon aSubsetPoly;
 388
 389         // create temporary polygon (as an extract from maPoly,
 390         // which contains the requested subset)
 391         for( sal_Int32 i=nPolygonIndex; i<nNumberOfPolygons; ++i )
 392         {
 393             checkIndex(i);
 394
 395             const B2DPolygon& rCurrPoly( maPolyPoly.getB2DPolygon(i) );
 396
 397             sal_Int32 nFirstPoint(0);
 398             sal_Int32 nLastPoint(nPolyCount-1);
 399
 400             if( nPointIndex && i==nPolygonIndex )
 401             {
 402                 // very first polygon - respect nPointIndex, if
 403                 // not zero
 404
 405                 // empty polygon - impossible to specify _any_
 406                 // legal value except 0 here!
 407                 if( !nPolyCount && nPointIndex )
 408                     throw lang::IndexOutOfBoundsException();
 409
 410                 nFirstPoint = nPointIndex;
 411             }
 412
 413             if( i==nNumberOfPolygons-1 && nNumberOfPoints != -1 )
 414             {
 415                 // very last polygon - respect nNumberOfPoints
 416
 417                 // empty polygon - impossible to specify _any_
 418                 // legal value except -1 here!
 419                 if( !nPolyCount )
 420                     throw lang::IndexOutOfBoundsException();
 421
 422                 nLastPoint = nFirstPoint+nNumberOfPoints;
 423             }
 424
 425             if( !nPolyCount )
 426             {
 427                 // empty polygon - index checks already performed
 428                 // above, now simply append empty polygon
 429                 aSubsetPoly.append( rCurrPoly );
 430             }
 431             else
 432             {
 433                 if( nFirstPoint < 0 || nFirstPoint >= nPolyCount )
 434                     throw lang::IndexOutOfBoundsException();
 435
 436                 if( nLastPoint < 0 || nLastPoint >= nPolyCount )
 437                     throw lang::IndexOutOfBoundsException();
 438
 439                 B2DPolygon aTmp;
 440                 for( sal_Int32 j=nFirstPoint; j<nLastPoint; ++j )
 441                     aTmp.append( rCurrPoly.getB2DPoint(j) );
 442
 443                 aSubsetPoly.append( aTmp );
 444             }
 445         }
 446
 447         return aSubsetPoly;
 448     }
 449
 450     B2DPolyPolygon UnoPolyPolygon::getPolyPolygonUnsafe() const
 451     {
 452         return maPolyPoly;
 453     }
 454
 455 #define IMPLEMENTATION_NAME "gfx::internal::UnoPolyPolygon"
 456 #define SERVICE_NAME "com.sun.star.rendering.PolyPolygon2D"
 457     ::rtl::OUString SAL_CALL UnoPolyPolygon::getImplementationName() throw( uno::RuntimeException )
 458     {
 459         return ::rtl::OUString( RTL_CONSTASCII_USTRINGPARAM( IMPLEMENTATION_NAME ) );
 460     }
 461
 462     sal_Bool SAL_CALL UnoPolyPolygon::supportsService( const ::rtl::OUString& ServiceName ) throw( uno::RuntimeException )
 463     {
 464         return ServiceName.equalsAsciiL( RTL_CONSTASCII_STRINGPARAM ( SERVICE_NAME ) );
 465     }
 466
 467     uno::Sequence< ::rtl::OUString > SAL_CALL UnoPolyPolygon::getSupportedServiceNames()  throw( uno::RuntimeException )
 468     {
 469         uno::Sequence< ::rtl::OUString > aRet(1);
 470         aRet[0] = ::rtl::OUString( RTL_CONSTASCII_USTRINGPARAM ( SERVICE_NAME ) );
 471
 472         return aRet;
 473     }
 474
 475     B2DPolyPolygon UnoPolyPolygon::getPolyPolygon() const
 476     {
 477         osl::MutexGuard const guard( m_aMutex );
 478
 479         // detach result from us
 480         B2DPolyPolygon aRet( maPolyPoly );
 481         aRet.makeUnique();
 482         return aRet;
 483     }
 484
 485 }
 486 }