basegfx/source/tools/unopolypolygon.cxx

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  30
  31 // MARKER(update_precomp.py): autogen include statement, do not remove
  32 #include "precompiled_basegfx.hxx"
  33
  34 #include <com/sun/star/geometry/AffineMatrix2D.hpp>
  35 #include <com/sun/star/rendering/RenderState.hpp>
  36 #include <com/sun/star/rendering/ViewState.hpp>
  37 #include <com/sun/star/rendering/XCanvas.hpp>
  38 #include <com/sun/star/rendering/CompositeOperation.hpp>
  39
  40 #include <basegfx/matrix/b2dhommatrix.hxx>
  41 #include <basegfx/range/b2drange.hxx>
  42 #include <basegfx/range/b2drectangle.hxx>
  43 #include <basegfx/point/b2dpoint.hxx>
  44 #include <basegfx/tools/canvastools.hxx>
  45 #include <basegfx/polygon/b2dpolygon.hxx>
  46 #include <basegfx/polygon/b2dpolypolygontools.hxx>
  47
  48 #include <basegfx/tools/unopolypolygon.hxx>
  49
  50
  51 using namespace ::com::sun::star;
  52
  53 namespace basegfx
  54 {
  55 namespace unotools
  56 {
  57     UnoPolyPolygon::UnoPolyPolygon( const B2DPolyPolygon& rPolyPoly ) :
  58         UnoPolyPolygonBase( m_aMutex ),
  59         maPolyPoly( rPolyPoly ),
  60         meFillRule( rendering::FillRule_EVEN_ODD )
  61     {
  62         // or else races will haunt us.
  63         maPolyPoly.makeUnique();
  64     }
  65
  66     void SAL_CALL UnoPolyPolygon::addPolyPolygon(
  67         const geometry::RealPoint2D&                                            position,
  68         const uno::Reference< rendering::XPolyPolygon2D >&      polyPolygon ) throw (lang::IllegalArgumentException,uno::RuntimeException)
  69     {
  70         osl::MutexGuard const guard( m_aMutex );
  71         modifying();
  72
  73         // TODO(F1): Correctly fulfill the UNO API
  74         // specification. This will probably result in a vector of
  75         // poly-polygons to be stored in this object.
  76
  77         const sal_Int32 nPolys( polyPolygon->getNumberOfPolygons() );
  78
  79         if( !polyPolygon.is() || !nPolys )
  80         {
  81             // invalid or empty polygon - nothing to do.
  82             return;
  83         }
  84
  85         B2DPolyPolygon        aSrcPoly;
  86         const UnoPolyPolygon* pSrc( dynamic_cast< UnoPolyPolygon* >(polyPolygon.get()) );
  87
  88         // try to extract polygon data from interface. First,
  89         // check whether it's the same implementation object,
  90         // which we can tunnel then.
  91         if( pSrc )
  92         {
  93             aSrcPoly = pSrc->getPolyPolygon();
  94         }
  95         else
  96         {
  97             // not a known implementation object - try data source
  98             // interfaces
  99             uno::Reference< rendering::XBezierPolyPolygon2D > xBezierPoly(
 100                 polyPolygon,
 101                 uno::UNO_QUERY );
 102
 103             if( xBezierPoly.is() )
 104             {
 105                 aSrcPoly = unotools::polyPolygonFromBezier2DSequenceSequence(
 106                     xBezierPoly->getBezierSegments( 0,
 107                                                     nPolys,
 108                                                     0,
 109                                                     -1 ) );
 110             }
 111             else
 112             {
 113                 uno::Reference< rendering::XLinePolyPolygon2D > xLinePoly(
 114                     polyPolygon,
 115                     uno::UNO_QUERY );
 116
 117                 // no implementation class and no data provider
 118                 // found - contract violation.
 119                 if( !xLinePoly.is() )
 120                     throw lang::IllegalArgumentException(
 121                         ::rtl::OUString(
 122                             RTL_CONSTASCII_USTRINGPARAM(
 123                                 "UnoPolyPolygon::addPolyPolygon(): Invalid input "
 124                                 "poly-polygon, cannot retrieve vertex data")),
 125                         static_cast<cppu::OWeakObject*>(this), 1);
 126
 127                 aSrcPoly = unotools::polyPolygonFromPoint2DSequenceSequence(
 128                     xLinePoly->getPoints( 0,
 129                                           nPolys,
 130                                           0,
 131                                           -1 ) );
 132             }
 133         }
 134
 135         const B2DRange  aBounds( tools::getRange( aSrcPoly ) );
 136         const B2DVector         aOffset( unotools::b2DPointFromRealPoint2D( position ) -
 137                                              aBounds.getMinimum() );
 138
 139         if( !aOffset.equalZero() )
 140         {
 141             B2DHomMatrix aTranslate;
 142             aTranslate.translate( aOffset.getX(), aOffset.getY() );
 143
 144             aSrcPoly.transform( aTranslate );
 145         }
 146
 147         maPolyPoly.append( aSrcPoly );
 148     }
 149
 150     sal_Int32 SAL_CALL UnoPolyPolygon::getNumberOfPolygons() throw (uno::RuntimeException)
 151     {
 152         osl::MutexGuard const guard( m_aMutex );
 153         return maPolyPoly.count();
 154     }
 155
 156     sal_Int32 SAL_CALL UnoPolyPolygon::getNumberOfPolygonPoints(
 157         sal_Int32 polygon ) throw (lang::IndexOutOfBoundsException,uno::RuntimeException)
 158     {
 159         osl::MutexGuard const guard( m_aMutex );
 160         checkIndex( polygon );
 161
 162         return maPolyPoly.getB2DPolygon(polygon).count();
 163     }
 164
 165     rendering::FillRule SAL_CALL UnoPolyPolygon::getFillRule() throw (uno::RuntimeException)
 166     {
 167         osl::MutexGuard const guard( m_aMutex );
 168         return meFillRule;
 169     }
 170
 171     void SAL_CALL UnoPolyPolygon::setFillRule(
 172         rendering::FillRule fillRule ) throw (uno::RuntimeException)
 173     {
 174         osl::MutexGuard const guard( m_aMutex );
 175         modifying();
 176
 177         meFillRule = fillRule;
 178     }
 179
 180     sal_Bool SAL_CALL UnoPolyPolygon::isClosed(
 181         sal_Int32 index ) throw (lang::IndexOutOfBoundsException,uno::RuntimeException)
 182     {
 183         osl::MutexGuard const guard( m_aMutex );
 184         checkIndex( index );
 185
 186         return maPolyPoly.getB2DPolygon(index).isClosed();
 187     }
 188
 189     void SAL_CALL UnoPolyPolygon::setClosed(
 190         sal_Int32 index,
 191         sal_Bool closedState ) throw (lang::IndexOutOfBoundsException,uno::RuntimeException)
 192     {
 193         osl::MutexGuard const guard( m_aMutex );
 194         modifying();
 195
 196         if( index == -1L )
 197         {
 198             // set all
 199             maPolyPoly.setClosed( closedState );
 200         }
 201         else
 202         {
 203             checkIndex( index );
 204
 205             // fetch referenced polygon, change state
 206             B2DPolygon aTmp( maPolyPoly.getB2DPolygon(index) );
 207             aTmp.setClosed( closedState );
 208
 209             // set back to container
 210             maPolyPoly.setB2DPolygon( index, aTmp );
 211         }
 212     }
 213
 214     uno::Sequence< uno::Sequence< geometry::RealPoint2D > > SAL_CALL UnoPolyPolygon::getPoints(
 215         sal_Int32 nPolygonIndex,
 216         sal_Int32 nNumberOfPolygons,
 217         sal_Int32 nPointIndex,
 218         sal_Int32 nNumberOfPoints ) throw (lang::IndexOutOfBoundsException,uno::RuntimeException)
 219     {
 220         osl::MutexGuard const guard( m_aMutex );
 221
 222         return unotools::pointSequenceSequenceFromB2DPolyPolygon(
 223             getSubsetPolyPolygon( nPolygonIndex,
 224                                   nNumberOfPolygons,
 225                                   nPointIndex,
 226                                   nNumberOfPoints ) );
 227     }
 228
 229     void SAL_CALL UnoPolyPolygon::setPoints(
 230         const uno::Sequence< uno::Sequence< geometry::RealPoint2D > >& points,
 231         sal_Int32 nPolygonIndex ) throw (lang::IndexOutOfBoundsException,uno::RuntimeException)
 232     {
 233         osl::MutexGuard const guard( m_aMutex );
 234         modifying();
 235
 236         const B2DPolyPolygon& rNewPolyPoly(
 237             unotools::polyPolygonFromPoint2DSequenceSequence( points ) );
 238
 239         if( nPolygonIndex == -1 )
 240         {
 241             maPolyPoly = rNewPolyPoly;
 242         }
 243         else
 244         {
 245             checkIndex( nPolygonIndex );
 246
 247             maPolyPoly.insert( nPolygonIndex, rNewPolyPoly );
 248         }
 249     }
 250
 251     geometry::RealPoint2D SAL_CALL UnoPolyPolygon::getPoint(
 252         sal_Int32 nPolygonIndex,
 253         sal_Int32 nPointIndex ) throw (lang::IndexOutOfBoundsException,uno::RuntimeException)
 254     {
 255         osl::MutexGuard const guard( m_aMutex );
 256         checkIndex( nPolygonIndex );
 257
 258         const B2DPolygon& rPoly( maPolyPoly.getB2DPolygon( nPolygonIndex ) );
 259
 260         if( nPointIndex < 0 || nPointIndex >= static_cast<sal_Int32>(rPoly.count()) )
 261             throw lang::IndexOutOfBoundsException();
 262
 263         return unotools::point2DFromB2DPoint( rPoly.getB2DPoint( nPointIndex ) );
 264     }
 265
 266     void SAL_CALL UnoPolyPolygon::setPoint(
 267         const geometry::RealPoint2D& point,
 268         sal_Int32 nPolygonIndex,
 269         sal_Int32 nPointIndex ) throw (lang::IndexOutOfBoundsException,uno::RuntimeException)
 270     {
 271         osl::MutexGuard const guard( m_aMutex );
 272         checkIndex( nPolygonIndex );
 273         modifying();
 274
 275         B2DPolygon aPoly( maPolyPoly.getB2DPolygon( nPolygonIndex ) );
 276
 277         if( nPointIndex < 0 || nPointIndex >= static_cast<sal_Int32>(aPoly.count()) )
 278             throw lang::IndexOutOfBoundsException();
 279
 280         aPoly.setB2DPoint( nPointIndex,
 281                            unotools::b2DPointFromRealPoint2D( point ) );
 282         maPolyPoly.setB2DPolygon( nPolygonIndex, aPoly );
 283     }
 284
 285     uno::Sequence< uno::Sequence< geometry::RealBezierSegment2D > > SAL_CALL UnoPolyPolygon::getBezierSegments(
 286         sal_Int32 nPolygonIndex,
 287         sal_Int32 nNumberOfPolygons,
 288         sal_Int32 nPointIndex,
 289         sal_Int32 nNumberOfPoints ) throw (lang::IndexOutOfBoundsException, uno::RuntimeException)
 290     {
 291         osl::MutexGuard const guard( m_aMutex );
 292         return unotools::bezierSequenceSequenceFromB2DPolyPolygon(
 293             getSubsetPolyPolygon( nPolygonIndex,
 294                                   nNumberOfPolygons,
 295                                   nPointIndex,
 296                                   nNumberOfPoints ) );
 297     }
 298
 299     void SAL_CALL UnoPolyPolygon::setBezierSegments(
 300         const uno::Sequence< uno::Sequence< geometry::RealBezierSegment2D > >&  points,
 301         sal_Int32                                                                                                                               nPolygonIndex ) throw (lang::IndexOutOfBoundsException,
 302                                                                                                        uno::RuntimeException)
 303     {
 304         osl::MutexGuard const guard( m_aMutex );
 305         modifying();
 306         const B2DPolyPolygon& rNewPolyPoly(
 307             unotools::polyPolygonFromBezier2DSequenceSequence( points ) );
 308
 309         if( nPolygonIndex == -1 )
 310         {
 311             maPolyPoly = rNewPolyPoly;
 312         }
 313         else
 314         {
 315             checkIndex( nPolygonIndex );
 316
 317             maPolyPoly.insert( nPolygonIndex, rNewPolyPoly );
 318         }
 319     }
 320
 321     geometry::RealBezierSegment2D SAL_CALL UnoPolyPolygon::getBezierSegment( sal_Int32 nPolygonIndex,
 322                                                                              sal_Int32 nPointIndex ) throw (lang::IndexOutOfBoundsException,
 323                                                                                                             uno::RuntimeException)
 324     {
 325         osl::MutexGuard const guard( m_aMutex );
 326         checkIndex( nPolygonIndex );
 327
 328         const B2DPolygon& rPoly( maPolyPoly.getB2DPolygon( nPolygonIndex ) );
 329         const sal_uInt32  nPointCount(rPoly.count());
 330
 331         if( nPointIndex < 0 || nPointIndex >= static_cast<sal_Int32>(nPointCount) )
 332             throw lang::IndexOutOfBoundsException();
 333
 334         const B2DPoint& rPt( rPoly.getB2DPoint( nPointIndex ) );
 335         const B2DPoint& rCtrl0( rPoly.getNextControlPoint(nPointIndex) );
 336         const B2DPoint& rCtrl1( rPoly.getPrevControlPoint((nPointIndex + 1) % nPointCount) );
 337
 338         return geometry::RealBezierSegment2D( rPt.getX(),
 339                                               rPt.getY(),
 340                                               rCtrl0.getX(),
 341                                               rCtrl0.getY(),
 342                                               rCtrl1.getX(),
 343                                               rCtrl1.getY() );
 344     }
 345
 346     void SAL_CALL UnoPolyPolygon::setBezierSegment( const geometry::RealBezierSegment2D& segment,
 347                                                          sal_Int32                                               nPolygonIndex,
 348                                                          sal_Int32                                               nPointIndex ) throw (lang::IndexOutOfBoundsException,
 349                                                                                                               uno::RuntimeException)
 350     {
 351         osl::MutexGuard const guard( m_aMutex );
 352         checkIndex( nPolygonIndex );
 353         modifying();
 354
 355         B2DPolygon aPoly( maPolyPoly.getB2DPolygon( nPolygonIndex ) );
 356         const sal_uInt32 nPointCount(aPoly.count());
 357
 358         if( nPointIndex < 0 || nPointIndex >= static_cast<sal_Int32>(nPointCount) )
 359             throw lang::IndexOutOfBoundsException();
 360
 361         aPoly.setB2DPoint( nPointIndex,
 362                            B2DPoint( segment.Px,
 363                                      segment.Py ) );
 364         aPoly.setNextControlPoint(nPointIndex,
 365                                   B2DPoint(segment.C1x, segment.C1y));
 366         aPoly.setPrevControlPoint((nPointIndex + 1) % nPointCount,
 367                                   B2DPoint(segment.C2x, segment.C2y));
 368
 369         maPolyPoly.setB2DPolygon( nPolygonIndex, aPoly );
 370     }
 371
 372     B2DPolyPolygon UnoPolyPolygon::getSubsetPolyPolygon(
 373         sal_Int32 nPolygonIndex,
 374         sal_Int32 nNumberOfPolygons,
 375         sal_Int32 nPointIndex,
 376         sal_Int32 nNumberOfPoints ) const
 377     {
 378         osl::MutexGuard const guard( m_aMutex );
 379         checkIndex( nPolygonIndex );
 380
 381         const sal_Int32 nPolyCount( maPolyPoly.count() );
 382
 383         // check for "full polygon" case
 384         if( !nPolygonIndex &&
 385             !nPointIndex &&
 386             nNumberOfPolygons == nPolyCount &&
 387             nNumberOfPoints == -1 )
 388         {
 389             return maPolyPoly;
 390         }
 391
 392         B2DPolyPolygon aSubsetPoly;
 393
 394         // create temporary polygon (as an extract from maPoly,
 395         // which contains the requested subset)
 396         for( sal_Int32 i=nPolygonIndex; i<nNumberOfPolygons; ++i )
 397         {
 398             checkIndex(i);
 399
 400             const B2DPolygon& rCurrPoly( maPolyPoly.getB2DPolygon(i) );
 401
 402             sal_Int32 nFirstPoint(0);
 403             sal_Int32 nLastPoint(nPolyCount-1);
 404
 405             if( nPointIndex && i==nPolygonIndex )
 406             {
 407                 // very first polygon - respect nPointIndex, if
 408                 // not zero
 409
 410                 // empty polygon - impossible to specify _any_
 411                 // legal value except 0 here!
 412                 if( !nPolyCount && nPointIndex )
 413                     throw lang::IndexOutOfBoundsException();
 414
 415                 nFirstPoint = nPointIndex;
 416             }
 417
 418             if( i==nNumberOfPolygons-1 && nNumberOfPoints != -1 )
 419             {
 420                 // very last polygon - respect nNumberOfPoints
 421
 422                 // empty polygon - impossible to specify _any_
 423                 // legal value except -1 here!
 424                 if( !nPolyCount )
 425                     throw lang::IndexOutOfBoundsException();
 426
 427                 nLastPoint = nFirstPoint+nNumberOfPoints;
 428             }
 429
 430             if( !nPolyCount )
 431             {
 432                 // empty polygon - index checks already performed
 433                 // above, now simply append empty polygon
 434                 aSubsetPoly.append( rCurrPoly );
 435             }
 436             else
 437             {
 438                 if( nFirstPoint < 0 || nFirstPoint >= nPolyCount )
 439                     throw lang::IndexOutOfBoundsException();
 440
 441                 if( nLastPoint < 0 || nLastPoint >= nPolyCount )
 442                     throw lang::IndexOutOfBoundsException();
 443
 444                 B2DPolygon aTmp;
 445                 for( sal_Int32 j=nFirstPoint; j<nLastPoint; ++j )
 446                     aTmp.append( rCurrPoly.getB2DPoint(j) );
 447
 448                 aSubsetPoly.append( aTmp );
 449             }
 450         }
 451
 452         return aSubsetPoly;
 453     }
 454
 455     B2DPolyPolygon UnoPolyPolygon::getPolyPolygonUnsafe() const
 456     {
 457         return maPolyPoly;
 458     }
 459
 460 #define IMPLEMENTATION_NAME "gfx::internal::UnoPolyPolygon"
 461 #define SERVICE_NAME "com.sun.star.rendering.PolyPolygon2D"
 462     ::rtl::OUString SAL_CALL UnoPolyPolygon::getImplementationName() throw( uno::RuntimeException )
 463     {
 464         return ::rtl::OUString( RTL_CONSTASCII_USTRINGPARAM( IMPLEMENTATION_NAME ) );
 465     }
 466
 467     sal_Bool SAL_CALL UnoPolyPolygon::supportsService( const ::rtl::OUString& ServiceName ) throw( uno::RuntimeException )
 468     {
 469         return ServiceName.equalsAsciiL( RTL_CONSTASCII_STRINGPARAM ( SERVICE_NAME ) );
 470     }
 471
 472     uno::Sequence< ::rtl::OUString > SAL_CALL UnoPolyPolygon::getSupportedServiceNames()  throw( uno::RuntimeException )
 473     {
 474         uno::Sequence< ::rtl::OUString > aRet(1);
 475         aRet[0] = ::rtl::OUString( RTL_CONSTASCII_USTRINGPARAM ( SERVICE_NAME ) );
 476
 477         return aRet;
 478     }
 479
 480     B2DPolyPolygon UnoPolyPolygon::getPolyPolygon() const
 481     {
 482         osl::MutexGuard const guard( m_aMutex );
 483
 484         // detach result from us
 485         B2DPolyPolygon aRet( maPolyPoly );
 486         aRet.makeUnique();
 487         return aRet;
 488     }
 489
 490 }
 491 }