slideshow/source/engine/tools.cxx

   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 #include <canvas/debug.hxx>
  22 #include <tools/diagnose_ex.h>
  23 #include <canvas/canvastools.hxx>
  24
  25 #include <math.h>
  26
  27 #include <com/sun/star/beans/NamedValue.hpp>
  28 #include <com/sun/star/awt/Rectangle.hpp>
  29 #include <com/sun/star/animations/ValuePair.hpp>
  30 #include <com/sun/star/drawing/FillStyle.hpp>
  31 #include <com/sun/star/drawing/LineStyle.hpp>
  32 #include <com/sun/star/awt/FontSlant.hpp>
  33
  34 #include <basegfx/polygon/b2dpolygon.hxx>
  35 #include <basegfx/polygon/b2dpolygontools.hxx>
  36 #include <basegfx/range/b2drange.hxx>
  37 #include <basegfx/vector/b2dvector.hxx>
  38 #include <basegfx/vector/b2ivector.hxx>
  39 #include <basegfx/matrix/b2dhommatrix.hxx>
  40 #include <basegfx/numeric/ftools.hxx>
  41 #include <basegfx/tools/lerp.hxx>
  42 #include <basegfx/matrix/b2dhommatrixtools.hxx>
  43
  44 #include <cppcanvas/basegfxfactory.hxx>
  45
  46 #include "unoview.hxx"
  47 #include "smilfunctionparser.hxx"
  48 #include "tools.hxx"
  49
  50 #include <limits>
  51
  52
  53 using namespace ::com::sun::star;
  54
  55 namespace slideshow
  56 {
  57     namespace internal
  58     {
  59         namespace
  60         {
  61             class NamedValueComparator
  62             {
  63             public:
  64                 NamedValueComparator( const beans::NamedValue& rKey ) :
  65                     mrKey( rKey )
  66                 {
  67                 }
  68
  69                 bool operator()( const beans::NamedValue& rValue ) const
  70                 {
  71                     return rValue.Name == mrKey.Name && rValue.Value == mrKey.Value;
  72                 }
  73
  74             private:
  75                 const beans::NamedValue&    mrKey;
  76             };
  77
  78             ::basegfx::B2DHomMatrix getAttributedShapeTransformation( const ::basegfx::B2DRectangle&        rShapeBounds,
  79                                                                       const ShapeAttributeLayerSharedPtr&   pAttr )
  80             {
  81                 ::basegfx::B2DHomMatrix     aTransform;
  82                 const ::basegfx::B2DSize&   rSize( rShapeBounds.getRange() );
  83
  84                 const double nShearX( pAttr->isShearXAngleValid() ?
  85                                       pAttr->getShearXAngle() :
  86                                       0.0 );
  87                 const double nShearY( pAttr->isShearYAngleValid() ?
  88                                       pAttr->getShearYAngle() :
  89                                       0.0 );
  90                 const double nRotation( pAttr->isRotationAngleValid() ?
  91                                         pAttr->getRotationAngle()*M_PI/180.0 :
  92                                         0.0 );
  93
  94                 // scale, shear and rotation pivot point is the shape
  95                 // center - adapt origin accordingly
  96                 aTransform.translate( -0.5, -0.5 );
  97
  98                 // ensure valid size (zero size will inevitably lead
  99                 // to a singular transformation matrix)
 100                 aTransform.scale( ::basegfx::pruneScaleValue(
 101                                       rSize.getX() ),
 102                                   ::basegfx::pruneScaleValue(
 103                                       rSize.getY() ) );
 104
 105                 const bool bNeedShearX( !::basegfx::fTools::equalZero(nShearX) );
 106                 const bool bNeedShearY( !::basegfx::fTools::equalZero(nShearY) );
 107                 const bool bNeedRotation( !::basegfx::fTools::equalZero(nRotation) );
 108
 109                 if( bNeedRotation || bNeedShearX || bNeedShearY )
 110                 {
 111                     if( bNeedShearX )
 112                         aTransform.shearX( nShearX );
 113
 114                     if( bNeedShearY )
 115                         aTransform.shearY( nShearY );
 116
 117                     if( bNeedRotation )
 118                         aTransform.rotate( nRotation );
 119                 }
 120
 121                 // move left, top corner back to position of the
 122                 // shape. Since we've already translated the
 123                 // center of the shape to the origin (the
 124                 // translate( -0.5, -0.5 ) above), translate to
 125                 // center of final shape position here.
 126                 aTransform.translate( rShapeBounds.getCenterX(),
 127                                       rShapeBounds.getCenterY() );
 128
 129                 return aTransform;
 130             }
 131         }
 132
 133         // Value extraction from Any
 134         // =========================
 135
 136         /// extract unary double value from Any
 137         bool extractValue( double&                      o_rValue,
 138                            const uno::Any&              rSourceAny,
 139                            const ShapeSharedPtr&        rShape,
 140                            const ::basegfx::B2DVector&  rSlideBounds )
 141         {
 142             // try to extract numeric value (double, or smaller POD, like float or int)
 143             if( (rSourceAny >>= o_rValue) )
 144             {
 145                 // succeeded
 146                 return true;
 147             }
 148
 149             // try to extract string
 150             OUString aString;
 151             if( !(rSourceAny >>= aString) )
 152                 return false; // nothing left to try
 153
 154             // parse the string into an ExpressionNode
 155             try
 156             {
 157                 // Parse string into ExpressionNode, eval node at time 0.0
 158                 o_rValue = (*SmilFunctionParser::parseSmilValue(
 159                                 aString,
 160                                 calcRelativeShapeBounds(rSlideBounds,
 161                                                         rShape->getBounds()) ))(0.0);
 162             }
 163             catch( ParseError& )
 164             {
 165                 return false;
 166             }
 167
 168             return true;
 169         }
 170
 171         /// extract enum/constant group value from Any
 172         bool extractValue( sal_Int32&                       o_rValue,
 173                            const uno::Any&                  rSourceAny,
 174                            const ShapeSharedPtr&            /*rShape*/,
 175                            const ::basegfx::B2DVector&      /*rSlideBounds*/ )
 176         {
 177             // try to extract numeric value (int, or smaller POD, like byte)
 178             if( (rSourceAny >>= o_rValue) )
 179             {
 180                 // succeeded
 181                 return true;
 182             }
 183
 184             // okay, no plain int. Maybe one of the domain-specific enums?
 185             drawing::FillStyle eFillStyle;
 186             if( (rSourceAny >>= eFillStyle) )
 187             {
 188                 o_rValue = sal::static_int_cast<sal_Int16>(eFillStyle);
 189
 190                 // succeeded
 191                 return true;
 192             }
 193
 194             drawing::LineStyle eLineStyle;
 195             if( (rSourceAny >>= eLineStyle) )
 196             {
 197                 o_rValue = sal::static_int_cast<sal_Int16>(eLineStyle);
 198
 199                 // succeeded
 200                 return true;
 201             }
 202
 203             awt::FontSlant eFontSlant;
 204             if( (rSourceAny >>= eFontSlant) )
 205             {
 206                 o_rValue = sal::static_int_cast<sal_Int16>(eFontSlant);
 207
 208                 // succeeded
 209                 return true;
 210             }
 211
 212             // nothing left to try. Failure
 213             return false;
 214         }
 215
 216         /// extract enum/constant group value from Any
 217         bool extractValue( sal_Int16&                       o_rValue,
 218                            const uno::Any&                  rSourceAny,
 219                            const ShapeSharedPtr&            rShape,
 220                            const ::basegfx::B2DVector&      rSlideBounds )
 221         {
 222             sal_Int32 aValue;
 223             if( !extractValue(aValue,rSourceAny,rShape,rSlideBounds) )
 224                 return false;
 225
 226             if( std::numeric_limits<sal_Int16>::max() < aValue ||
 227                 std::numeric_limits<sal_Int16>::min() > aValue )
 228             {
 229                 return false;
 230             }
 231
 232             o_rValue = static_cast<sal_Int16>(aValue);
 233
 234             return true;
 235         }
 236
 237         /// extract color value from Any
 238         bool extractValue( RGBColor&                    o_rValue,
 239                            const uno::Any&              rSourceAny,
 240                            const ShapeSharedPtr&        /*rShape*/,
 241                            const ::basegfx::B2DVector&  /*rSlideBounds*/ )
 242         {
 243             // try to extract numeric value (double, or smaller POD, like float or int)
 244             {
 245                 double nTmp = 0;
 246                 if( (rSourceAny >>= nTmp) )
 247                 {
 248                     sal_uInt32 aIntColor( static_cast< sal_uInt32 >(nTmp) );
 249
 250                     // TODO(F2): Handle color values correctly, here
 251                     o_rValue = unoColor2RGBColor( aIntColor );
 252
 253                     // succeeded
 254                     return true;
 255                 }
 256             }
 257
 258             // try double sequence
 259             {
 260                 uno::Sequence< double > aTmp;
 261                 if( (rSourceAny >>= aTmp) )
 262                 {
 263                     ENSURE_OR_THROW( aTmp.getLength() == 3,
 264                                       "extractValue(): inappropriate length for RGB color value" );
 265
 266                     o_rValue = RGBColor( aTmp[0], aTmp[1], aTmp[2] );
 267
 268                     // succeeded
 269                     return true;
 270                 }
 271             }
 272
 273             // try sal_Int32 sequence
 274             {
 275                 uno::Sequence< sal_Int32 > aTmp;
 276                 if( (rSourceAny >>= aTmp) )
 277                 {
 278                     ENSURE_OR_THROW( aTmp.getLength() == 3,
 279                                       "extractValue(): inappropriate length for RGB color value" );
 280
 281                     // truncate to byte
 282                     o_rValue = RGBColor( ::cppcanvas::makeColor(
 283                                              static_cast<sal_uInt8>(aTmp[0]),
 284                                              static_cast<sal_uInt8>(aTmp[1]),
 285                                              static_cast<sal_uInt8>(aTmp[2]),
 286                                              255 ) );
 287
 288                     // succeeded
 289                     return true;
 290                 }
 291             }
 292
 293             // try sal_Int8 sequence
 294             {
 295                 uno::Sequence< sal_Int8 > aTmp;
 296                 if( (rSourceAny >>= aTmp) )
 297                 {
 298                     ENSURE_OR_THROW( aTmp.getLength() == 3,
 299                                       "extractValue(): inappropriate length for RGB color value" );
 300
 301                     o_rValue = RGBColor( ::cppcanvas::makeColor( aTmp[0], aTmp[1], aTmp[2], 255 ) );
 302
 303                     // succeeded
 304                     return true;
 305                 }
 306             }
 307
 308             // try to extract string
 309             OUString aString;
 310             if( !(rSourceAny >>= aString) )
 311                 return false; // nothing left to try
 312
 313             // TODO(F2): Provide symbolic color values here
 314             o_rValue = RGBColor( 0.5, 0.5, 0.5 );
 315
 316             return true;
 317         }
 318
 319         /// extract color value from Any
 320         bool extractValue( HSLColor&                    o_rValue,
 321                            const uno::Any&              rSourceAny,
 322                            const ShapeSharedPtr&        /*rShape*/,
 323                            const ::basegfx::B2DVector&  /*rSlideBounds*/ )
 324         {
 325             // try double sequence
 326             {
 327                 uno::Sequence< double > aTmp;
 328                 if( (rSourceAny >>= aTmp) )
 329                 {
 330                     ENSURE_OR_THROW( aTmp.getLength() == 3,
 331                                       "extractValue(): inappropriate length for HSL color value" );
 332
 333                     o_rValue = HSLColor( aTmp[0], aTmp[1], aTmp[2] );
 334
 335                     // succeeded
 336                     return true;
 337                 }
 338             }
 339
 340             // try sal_Int8 sequence
 341             {
 342                 uno::Sequence< sal_Int8 > aTmp;
 343                 if( (rSourceAny >>= aTmp) )
 344                 {
 345                     ENSURE_OR_THROW( aTmp.getLength() == 3,
 346                                       "extractValue(): inappropriate length for HSL color value" );
 347
 348                     o_rValue = HSLColor( aTmp[0]*360.0/255.0, aTmp[1]/255.0, aTmp[2]/255.0 );
 349
 350                     // succeeded
 351                     return true;
 352                 }
 353             }
 354
 355             return false; // nothing left to try
 356         }
 357
 358         /// extract plain string from Any
 359         bool extractValue( OUString&             o_rValue,
 360                            const uno::Any&              rSourceAny,
 361                            const ShapeSharedPtr&        /*rShape*/,
 362                            const ::basegfx::B2DVector&  /*rSlideBounds*/ )
 363         {
 364             // try to extract string
 365             if( !(rSourceAny >>= o_rValue) )
 366                 return false; // nothing left to try
 367
 368             return true;
 369         }
 370
 371         /// extract bool value from Any
 372         bool extractValue( bool&                        o_rValue,
 373                            const uno::Any&              rSourceAny,
 374                            const ShapeSharedPtr&        /*rShape*/,
 375                            const ::basegfx::B2DVector&  /*rSlideBounds*/ )
 376         {
 377             bool nTmp;
 378             // try to extract bool value
 379             if( (rSourceAny >>= nTmp) )
 380             {
 381                 o_rValue = nTmp;
 382
 383                 // succeeded
 384                 return true;
 385             }
 386
 387             // try to extract string
 388             OUString aString;
 389             if( !(rSourceAny >>= aString) )
 390                 return false; // nothing left to try
 391
 392             // we also take the strings "true" and "false",
 393             // as well as "on" and "off" here
 394             if( aString.equalsIgnoreAsciiCase("true") ||
 395                 aString.equalsIgnoreAsciiCase("on") )
 396             {
 397                 o_rValue = true;
 398                 return true;
 399             }
 400             if( aString.equalsIgnoreAsciiCase("false") ||
 401                 aString.equalsIgnoreAsciiCase("off") )
 402             {
 403                 o_rValue = false;
 404                 return true;
 405             }
 406
 407             // ultimately failed.
 408             return false;
 409         }
 410
 411         /// extract double 2-tuple from Any
 412         bool extractValue( ::basegfx::B2DTuple&         o_rPair,
 413                            const uno::Any&              rSourceAny,
 414                            const ShapeSharedPtr&        rShape,
 415                            const ::basegfx::B2DVector&  rSlideBounds )
 416         {
 417             animations::ValuePair aPair;
 418
 419             if( !(rSourceAny >>= aPair) )
 420                 return false;
 421
 422             double nFirst;
 423             if( !extractValue( nFirst, aPair.First, rShape, rSlideBounds ) )
 424                 return false;
 425
 426             double nSecond;
 427             if( !extractValue( nSecond, aPair.Second, rShape, rSlideBounds ) )
 428                 return false;
 429
 430             o_rPair.setX( nFirst );
 431             o_rPair.setY( nSecond );
 432
 433             return true;
 434         }
 435
 436         bool findNamedValue( uno::Sequence< beans::NamedValue > const& rSequence,
 437                              const beans::NamedValue&               rSearchKey )
 438         {
 439             const beans::NamedValue*    pArray = rSequence.getConstArray();
 440             const size_t                nLen( rSequence.getLength() );
 441
 442             return ::std::any_of( pArray,
 443                                   pArray + nLen,
 444                                   NamedValueComparator( rSearchKey ) );
 445         }
 446
 447         basegfx::B2DRange calcRelativeShapeBounds( const basegfx::B2DVector& rPageSize,
 448                                                    const basegfx::B2DRange&  rShapeBounds )
 449         {
 450             return basegfx::B2DRange( rShapeBounds.getMinX() / rPageSize.getX(),
 451                                       rShapeBounds.getMinY() / rPageSize.getY(),
 452                                       rShapeBounds.getMaxX() / rPageSize.getX(),
 453                                       rShapeBounds.getMaxY() / rPageSize.getY() );
 454         }
 455
 456         // TODO(F2): Currently, the positional attributes DO NOT mirror the XShape properties.
 457         // First and foremost, this is because we must operate with the shape boundrect,
 458         // not position and size (the conversion between logic rect, snap rect and boundrect
 459         // are non-trivial for draw shapes, and I won't duplicate them here). Thus, shapes
 460         // rotated on the page will still have 0.0 rotation angle, as the metafile
 461         // representation fetched over the API is our default zero case.
 462
 463         ::basegfx::B2DHomMatrix getShapeTransformation( const ::basegfx::B2DRectangle&      rShapeBounds,
 464                                                         const ShapeAttributeLayerSharedPtr& pAttr )
 465         {
 466             if( !pAttr )
 467             {
 468                 const basegfx::B2DHomMatrix aTransform(basegfx::tools::createScaleTranslateB2DHomMatrix(
 469                     rShapeBounds.getWidth(), rShapeBounds.getHeight(),
 470                     rShapeBounds.getMinX(), rShapeBounds.getMinY()));
 471
 472                 return aTransform;
 473             }
 474             else
 475             {
 476                 return getAttributedShapeTransformation( rShapeBounds,
 477                                                          pAttr );
 478             }
 479         }
 480
 481         ::basegfx::B2DHomMatrix getSpriteTransformation( const ::basegfx::B2DVector&            rPixelSize,
 482                                                          const ::basegfx::B2DVector&            rOrigSize,
 483                                                          const ShapeAttributeLayerSharedPtr&    pAttr )
 484         {
 485             ::basegfx::B2DHomMatrix aTransform;
 486
 487             if( pAttr )
 488             {
 489                 const double nShearX( pAttr->isShearXAngleValid() ?
 490                                       pAttr->getShearXAngle() :
 491                                       0.0 );
 492                 const double nShearY( pAttr->isShearYAngleValid() ?
 493                                       pAttr->getShearYAngle() :
 494                                       0.0 );
 495                 const double nRotation( pAttr->isRotationAngleValid() ?
 496                                         pAttr->getRotationAngle()*M_PI/180.0 :
 497                                         0.0 );
 498
 499                 // scale, shear and rotation pivot point is the
 500                 // sprite's pixel center - adapt origin accordingly
 501                 aTransform.translate( -0.5*rPixelSize.getX(),
 502                                       -0.5*rPixelSize.getY() );
 503
 504                 const ::basegfx::B2DSize aSize(
 505                     pAttr->isWidthValid() ? pAttr->getWidth() : rOrigSize.getX(),
 506                     pAttr->isHeightValid() ? pAttr->getHeight() : rOrigSize.getY() );
 507
 508                 // ensure valid size (zero size will inevitably lead
 509                 // to a singular transformation matrix).
 510                 aTransform.scale( ::basegfx::pruneScaleValue(
 511                                       aSize.getX() /
 512                                       ::basegfx::pruneScaleValue(
 513                                           rOrigSize.getX() ) ),
 514                                   ::basegfx::pruneScaleValue(
 515                                       aSize.getY() /
 516                                       ::basegfx::pruneScaleValue(
 517                                           rOrigSize.getY() ) ) );
 518
 519                 const bool bNeedShearX( !::basegfx::fTools::equalZero(nShearX) );
 520                 const bool bNeedShearY( !::basegfx::fTools::equalZero(nShearY) );
 521                 const bool bNeedRotation( !::basegfx::fTools::equalZero(nRotation) );
 522
 523                 if( bNeedRotation || bNeedShearX || bNeedShearY )
 524                 {
 525                     if( bNeedShearX )
 526                         aTransform.shearX( nShearX );
 527
 528                     if( bNeedShearY )
 529                         aTransform.shearY( nShearY );
 530
 531                     if( bNeedRotation )
 532                         aTransform.rotate( nRotation );
 533                 }
 534
 535                 // move left, top corner back to original position of
 536                 // the sprite (we've translated the center of the
 537                 // sprite to the origin above).
 538                 aTransform.translate( 0.5*rPixelSize.getX(),
 539                                       0.5*rPixelSize.getY() );
 540             }
 541
 542             // return identity transform for un-attributed
 543             // shapes. This renders the sprite as-is, in it's
 544             // document-supplied size.
 545             return aTransform;
 546         }
 547
 548         ::basegfx::B2DRectangle getShapeUpdateArea( const ::basegfx::B2DRectangle&      rUnitBounds,
 549                                                     const ::basegfx::B2DHomMatrix&      rShapeTransform,
 550                                                     const ShapeAttributeLayerSharedPtr& pAttr )
 551         {
 552             ::basegfx::B2DHomMatrix aTransform;
 553
 554             if( pAttr &&
 555                 pAttr->isCharScaleValid() &&
 556                 fabs(pAttr->getCharScale()) > 1.0 )
 557             {
 558                 // enlarge shape bounds. Have to consider the worst
 559                 // case here (the text fully fills the shape)
 560
 561                 const double nCharScale( pAttr->getCharScale() );
 562
 563                 // center of scaling is the middle of the shape
 564                 aTransform.translate( -0.5, -0.5 );
 565                 aTransform.scale( nCharScale, nCharScale );
 566                 aTransform.translate( 0.5, 0.5 );
 567             }
 568
 569             aTransform *= rShapeTransform;
 570
 571             ::basegfx::B2DRectangle aRes;
 572
 573             // apply shape transformation to unit rect
 574             return ::canvas::tools::calcTransformedRectBounds(
 575                 aRes,
 576                 rUnitBounds,
 577                 aTransform );
 578         }
 579
 580         ::basegfx::B2DRange getShapeUpdateArea( const ::basegfx::B2DRange&      rUnitBounds,
 581                                                     const ::basegfx::B2DRange&      rShapeBounds )
 582         {
 583             return ::basegfx::B2DRectangle(
 584                 basegfx::tools::lerp( rShapeBounds.getMinX(),
 585                                       rShapeBounds.getMaxX(),
 586                                       rUnitBounds.getMinX() ),
 587                 basegfx::tools::lerp( rShapeBounds.getMinY(),
 588                                       rShapeBounds.getMaxY(),
 589                                       rUnitBounds.getMinY() ),
 590                 basegfx::tools::lerp( rShapeBounds.getMinX(),
 591                                       rShapeBounds.getMaxX(),
 592                                       rUnitBounds.getMaxX() ),
 593                 basegfx::tools::lerp( rShapeBounds.getMinY(),
 594                                       rShapeBounds.getMaxY(),
 595                                       rUnitBounds.getMaxY() ) );
 596         }
 597
 598         ::basegfx::B2DRectangle getShapePosSize( const ::basegfx::B2DRectangle&         rOrigBounds,
 599                                                  const ShapeAttributeLayerSharedPtr&    pAttr )
 600         {
 601             // an already empty shape bound need no further
 602             // treatment. In fact, any changes applied below would
 603             // actually remove the special empty state, thus, don't
 604             // change!
 605             if( !pAttr ||
 606                 rOrigBounds.isEmpty() )
 607             {
 608                 return rOrigBounds;
 609             }
 610             else
 611             {
 612                 // cannot use maBounds anymore, attributes might have been
 613                 // changed by now.
 614                 // Have to use absolute values here, as negative sizes
 615                 // (aka mirrored shapes) _still_ have the same bounds,
 616                 // only with mirrored content.
 617                 ::basegfx::B2DSize aSize;
 618                 aSize.setX( fabs( pAttr->isWidthValid() ?
 619                                   pAttr->getWidth() :
 620                                   rOrigBounds.getWidth() ) );
 621                 aSize.setY( fabs( pAttr->isHeightValid() ?
 622                                   pAttr->getHeight() :
 623                                   rOrigBounds.getHeight() ) );
 624
 625                 ::basegfx::B2DPoint aPos;
 626                 aPos.setX( pAttr->isPosXValid() ?
 627                            pAttr->getPosX() :
 628                            rOrigBounds.getCenterX() );
 629                 aPos.setY( pAttr->isPosYValid() ?
 630                            pAttr->getPosY() :
 631                            rOrigBounds.getCenterY() );
 632
 633                 // the positional attribute retrieved from the
 634                 // ShapeAttributeLayer actually denotes the _middle_
 635                 // of the shape (do it as the PPTs do...)
 636                 return ::basegfx::B2DRectangle( aPos - 0.5*aSize,
 637                                                 aPos + 0.5*aSize );
 638             }
 639         }
 640
 641         RGBColor unoColor2RGBColor( sal_Int32 nColor )
 642         {
 643             return RGBColor(
 644                 ::cppcanvas::makeColor(
 645                     // convert from API color to IntSRGBA color
 646                     // (0xAARRGGBB -> 0xRRGGBBAA)
 647                     static_cast< sal_uInt8 >( nColor >> 16U ),
 648                     static_cast< sal_uInt8 >( nColor >> 8U ),
 649                     static_cast< sal_uInt8 >( nColor ),
 650                     static_cast< sal_uInt8 >( nColor >> 24U ) ) );
 651         }
 652
 653         sal_Int32 RGBAColor2UnoColor( ::cppcanvas::Color::IntSRGBA aColor )
 654         {
 655             return ::cppcanvas::makeColorARGB(
 656                 // convert from IntSRGBA color to API color
 657                 // (0xRRGGBBAA -> 0xAARRGGBB)
 658                 static_cast< sal_uInt8 >(0),
 659                 ::cppcanvas::getRed(aColor),
 660                 ::cppcanvas::getGreen(aColor),
 661                 ::cppcanvas::getBlue(aColor));
 662         }
 663
 664         void fillRect( const ::cppcanvas::CanvasSharedPtr& rCanvas,
 665                        const ::basegfx::B2DRectangle&      rRect,
 666                        ::cppcanvas::Color::IntSRGBA        aFillColor )
 667         {
 668             const ::basegfx::B2DPolygon aPoly(
 669                 ::basegfx::tools::createPolygonFromRect( rRect ));
 670
 671             ::cppcanvas::PolyPolygonSharedPtr pPolyPoly(
 672                 ::cppcanvas::BaseGfxFactory::createPolyPolygon( rCanvas, aPoly ) );
 673
 674             if( pPolyPoly )
 675             {
 676                 pPolyPoly->setRGBAFillColor( aFillColor );
 677                 pPolyPoly->draw();
 678             }
 679         }
 680
 681         void initSlideBackground( const ::cppcanvas::CanvasSharedPtr& rCanvas,
 682                                   const ::basegfx::B2ISize&           rSize )
 683         {
 684             ::cppcanvas::CanvasSharedPtr pCanvas( rCanvas->clone() );
 685
 686             // set transformation to identitiy (->device pixel)
 687             pCanvas->setTransformation( ::basegfx::B2DHomMatrix() );
 688
 689             // #i42440# Fill the _full_ background in
 690             // black. Since we had to extend the bitmap by one
 691             // pixel, and the bitmap is initialized white,
 692             // depending on the slide content a one pixel wide
 693             // line will show to the bottom and the right.
 694             fillRect( pCanvas,
 695                       ::basegfx::B2DRectangle( 0.0, 0.0,
 696                                                rSize.getX(),
 697                                                rSize.getY() ),
 698                       0x000000FFU );
 699
 700             // fill the bounds rectangle in white. Subtract one pixel
 701             // from both width and height, because the slide size is
 702             // chosen one pixel larger than given by the drawing
 703             // layer. This is because shapes with line style, that
 704             // have the size of the slide would otherwise be cut
 705             // off. OTOH, every other slide background (solid fill,
 706             // gradient, bitmap) render one pixel less, thus revealing
 707             // ugly white pixel to the right and the bottom.
 708             fillRect( pCanvas,
 709                       ::basegfx::B2DRectangle( 0.0, 0.0,
 710                                                rSize.getX()-1,
 711                                                rSize.getY()-1 ),
 712                       0xFFFFFFFFU );
 713         }
 714
 715         ::basegfx::B2DRectangle getAPIShapeBounds( const uno::Reference< drawing::XShape >& xShape )
 716         {
 717             uno::Reference< beans::XPropertySet > xPropSet( xShape,
 718                                                             uno::UNO_QUERY_THROW );
 719             // read bound rect
 720             awt::Rectangle aTmpRect;
 721             if( !(xPropSet->getPropertyValue(
 722                       OUString("BoundRect") ) >>= aTmpRect) )
 723             {
 724                 ENSURE_OR_THROW( false,
 725                                   "getAPIShapeBounds(): Could not get \"BoundRect\" property from shape" );
 726             }
 727
 728             return ::basegfx::B2DRectangle( aTmpRect.X,
 729                                             aTmpRect.Y,
 730                                             aTmpRect.X+aTmpRect.Width,
 731                                             aTmpRect.Y+aTmpRect.Height );
 732         }
 733
 734 /*
 735         TODO(F1): When ZOrder someday becomes usable enable this
 736
 737         double getAPIShapePrio( const uno::Reference< drawing::XShape >& xShape )
 738         {
 739             uno::Reference< beans::XPropertySet > xPropSet( xShape,
 740                                                             uno::UNO_QUERY_THROW );
 741             // read prio
 742             sal_Int32 nPrio(0);
 743             if( !(xPropSet->getPropertyValue(
 744                       OUString("ZOrder") ) >>= nPrio) )
 745             {
 746                 ENSURE_OR_THROW( false,
 747                                   "getAPIShapePrio(): Could not get \"ZOrder\" property from shape" );
 748             }
 749
 750             // TODO(F2): Check and adapt the range of possible values here.
 751             // Maybe we can also take the total number of shapes here
 752             return nPrio / 65535.0;
 753         }
 754 */
 755
 756         basegfx::B2IVector getSlideSizePixel( const basegfx::B2DVector& rSlideSize,
 757                                               const UnoViewSharedPtr&   pView )
 758         {
 759             ENSURE_OR_THROW(pView, "getSlideSizePixel(): invalid view");
 760
 761             // determine transformed page bounds
 762             const basegfx::B2DRange aRect( 0,0,
 763                                            rSlideSize.getX(),
 764                                            rSlideSize.getY() );
 765             basegfx::B2DRange aTmpRect;
 766             canvas::tools::calcTransformedRectBounds( aTmpRect,
 767                                                       aRect,
 768                                                       pView->getTransformation() );
 769
 770             // #i42440# Returned slide size is one pixel too small, as
 771             // rendering happens one pixel to the right and below the
 772             // actual bound rect.
 773             return basegfx::B2IVector(
 774                 basegfx::fround( aTmpRect.getRange().getX() ) + 1,
 775                 basegfx::fround( aTmpRect.getRange().getY() ) + 1 );
 776         }
 777     }
 778 }
 779
 780 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */