cppcanvas/source/mtfrenderer/bitmapaction.cxx

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
   2 /*
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  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 <com/sun/star/rendering/XBitmap.hpp>
  22 #include <com/sun/star/rendering/XCanvas.hpp>
  23 #include <com/sun/star/rendering/XCachedPrimitive.hpp>
  24 #include <vcl/bitmapex.hxx>
  25 #include <tools/gen.hxx>
  26 #include <vcl/canvastools.hxx>
  27 #include <canvas/canvastools.hxx>
  28 #include <basegfx/matrix/b2dhommatrix.hxx>
  29 #include <basegfx/point/b2dpoint.hxx>
  30 #include <basegfx/range/b2drange.hxx>
  31 #include <sal/log.hxx>
  32 #include "cachedprimitivebase.hxx"
  33 #include "bitmapaction.hxx"
  34 #include <outdevstate.hxx>
  35 #include "mtftools.hxx"
  36 #include <basegfx/matrix/b2dhommatrixtools.hxx>
  37
  38
  39 using namespace ::com::sun::star;
  40
  41 namespace cppcanvas::internal
  42 {
  43         namespace
  44         {
  45
  46             class BitmapAction : public CachedPrimitiveBase
  47             {
  48             public:
  49                 BitmapAction( const ::BitmapEx&,
  50                               const ::basegfx::B2DPoint& rDstPoint,
  51                               const CanvasSharedPtr&,
  52                               const OutDevState& );
  53                 BitmapAction( const ::BitmapEx&,
  54                               const ::basegfx::B2DPoint&  rDstPoint,
  55                               const ::basegfx::B2DVector& rDstSize,
  56                               const CanvasSharedPtr&,
  57                               const OutDevState& );
  58
  59                 virtual bool renderSubset( const ::basegfx::B2DHomMatrix& rTransformation,
  60                                            const Subset&                  rSubset ) const override;
  61
  62                 virtual ::basegfx::B2DRange getBounds( const ::basegfx::B2DHomMatrix& rTransformation ) const override;
  63                 virtual ::basegfx::B2DRange getBounds( const ::basegfx::B2DHomMatrix&   rTransformation,
  64                                                        const Subset&                    rSubset ) const override;
  65
  66                 virtual sal_Int32 getActionCount() const override;
  67
  68             private:
  69                 using Action::render;
  70                 virtual bool renderPrimitive( uno::Reference< rendering::XCachedPrimitive >& rCachedPrimitive,
  71                                               const ::basegfx::B2DHomMatrix&                 rTransformation ) const override;
  72
  73                 uno::Reference< rendering::XBitmap >                    mxBitmap;
  74                 CanvasSharedPtr                                         mpCanvas;
  75                 rendering::RenderState                                  maState;
  76             };
  77
  78
  79             BitmapAction::BitmapAction( const ::BitmapEx&          rBmpEx,
  80                                         const ::basegfx::B2DPoint& rDstPoint,
  81                                         const CanvasSharedPtr&     rCanvas,
  82                                         const OutDevState&         rState ) :
  83                 CachedPrimitiveBase( rCanvas, true ),
  84                 mxBitmap( vcl::unotools::xBitmapFromBitmapEx( rBmpEx ) ),
  85                 mpCanvas( rCanvas ),
  86                 maState()
  87             {
  88                 tools::initRenderState(maState,rState);
  89
  90                 // Setup transformation such that the next render call is
  91                 // moved rPoint away.
  92                 const basegfx::B2DHomMatrix aLocalTransformation(basegfx::utils::createTranslateB2DHomMatrix(rDstPoint));
  93                 ::canvas::tools::appendToRenderState( maState,
  94                                                       aLocalTransformation );
  95
  96                 // correct clip (which is relative to original transform)
  97                 tools::modifyClip( maState,
  98                                    rState,
  99                                    rCanvas,
 100                                    rDstPoint,
 101                                    nullptr,
 102                                    nullptr );
 103             }
 104
 105             BitmapAction::BitmapAction( const ::BitmapEx&           rBmpEx,
 106                                         const ::basegfx::B2DPoint&  rDstPoint,
 107                                         const ::basegfx::B2DVector& rDstSize,
 108                                         const CanvasSharedPtr&      rCanvas,
 109                                         const OutDevState&          rState      ) :
 110                 CachedPrimitiveBase( rCanvas, true ),
 111                 mxBitmap( vcl::unotools::xBitmapFromBitmapEx( rBmpEx ) ),
 112                 mpCanvas( rCanvas ),
 113                 maState()
 114             {
 115                 tools::initRenderState(maState,rState);
 116
 117                 // Setup transformation such that the next render call is
 118                 // moved rPoint away, and scaled according to the ratio
 119                 // given by src and dst size.
 120                 const ::Size aBmpSize( rBmpEx.GetSizePixel() );
 121
 122                 const ::basegfx::B2DVector aScale( rDstSize.getX() / aBmpSize.Width(),
 123                                                    rDstSize.getY() / aBmpSize.Height() );
 124                 const basegfx::B2DHomMatrix aLocalTransformation(basegfx::utils::createScaleTranslateB2DHomMatrix(
 125                     aScale, rDstPoint));
 126                 ::canvas::tools::appendToRenderState( maState, aLocalTransformation );
 127
 128                 // correct clip (which is relative to original transform)
 129                 tools::modifyClip( maState,
 130                                    rState,
 131                                    rCanvas,
 132                                    rDstPoint,
 133                                    &aScale,
 134                                    nullptr );
 135             }
 136
 137             bool BitmapAction::renderPrimitive( uno::Reference< rendering::XCachedPrimitive >& rCachedPrimitive,
 138                                                 const ::basegfx::B2DHomMatrix&                 rTransformation ) const
 139             {
 140                 SAL_INFO( "cppcanvas.emf", "::cppcanvas::internal::BitmapAction::renderPrimitive()" );
 141                 SAL_INFO( "cppcanvas.emf", "::cppcanvas::internal::BitmapAction: 0x" << std::hex << this );
 142
 143                 rendering::RenderState aLocalState( maState );
 144                 ::canvas::tools::prependToRenderState(aLocalState, rTransformation);
 145
 146                 rCachedPrimitive = mpCanvas->getUNOCanvas()->drawBitmap( mxBitmap,
 147                                                                          mpCanvas->getViewState(),
 148                                                                          aLocalState );
 149
 150                 return true;
 151             }
 152
 153             bool BitmapAction::renderSubset( const ::basegfx::B2DHomMatrix&   rTransformation,
 154                                              const Subset&                    rSubset ) const
 155             {
 156                 // bitmap only contains a single action, fail if subset
 157                 // requests different range
 158                 if( rSubset.mnSubsetBegin != 0 ||
 159                     rSubset.mnSubsetEnd != 1 )
 160                     return false;
 161
 162                 return CachedPrimitiveBase::render( rTransformation );
 163             }
 164
 165             ::basegfx::B2DRange BitmapAction::getBounds( const ::basegfx::B2DHomMatrix& rTransformation ) const
 166             {
 167                 rendering::RenderState aLocalState( maState );
 168                 ::canvas::tools::prependToRenderState(aLocalState, rTransformation);
 169
 170                 const geometry::IntegerSize2D aSize( mxBitmap->getSize() );
 171
 172                 return tools::calcDevicePixelBounds( ::basegfx::B2DRange( 0,0,
 173                                                                           aSize.Width,
 174                                                                           aSize.Height ),
 175                                                      mpCanvas->getViewState(),
 176                                                      aLocalState );
 177             }
 178
 179             ::basegfx::B2DRange BitmapAction::getBounds( const ::basegfx::B2DHomMatrix& rTransformation,
 180                                                          const Subset&                  rSubset ) const
 181             {
 182                 // bitmap only contains a single action, empty bounds
 183                 // if subset requests different range
 184                 if( rSubset.mnSubsetBegin != 0 ||
 185                     rSubset.mnSubsetEnd != 1 )
 186                     return ::basegfx::B2DRange();
 187
 188                 return getBounds( rTransformation );
 189             }
 190
 191             sal_Int32 BitmapAction::getActionCount() const
 192             {
 193                 return 1;
 194             }
 195         }
 196
 197         std::shared_ptr<Action> BitmapActionFactory::createBitmapAction( const ::BitmapEx&          rBmpEx,
 198                                                                  const ::basegfx::B2DPoint& rDstPoint,
 199                                                                  const CanvasSharedPtr&     rCanvas,
 200                                                                  const OutDevState&         rState )
 201         {
 202             return std::make_shared<BitmapAction>(rBmpEx, rDstPoint, rCanvas, rState );
 203         }
 204
 205         std::shared_ptr<Action> BitmapActionFactory::createBitmapAction( const ::BitmapEx&           rBmpEx,
 206                                                                  const ::basegfx::B2DPoint&  rDstPoint,
 207                                                                  const ::basegfx::B2DVector& rDstSize,
 208                                                                  const CanvasSharedPtr&      rCanvas,
 209                                                                  const OutDevState&          rState )
 210         {
 211             return std::make_shared<BitmapAction>(rBmpEx,
 212                                                   rDstPoint,
 213                                                   rDstSize,
 214                                                   rCanvas,
 215                                                   rState );
 216         }
 217 }
 218
 219 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */