cppcanvas/source/mtfrenderer/bitmapaction.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.
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   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 <com/sun/star/rendering/XBitmap.hpp>
  22 #include <com/sun/star/rendering/RepaintResult.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/vector/b2dsize.hxx>
  30 #include <basegfx/point/b2dpoint.hxx>
  31 #include <basegfx/range/b2drange.hxx>
  32 #include <basegfx/tools/canvastools.hxx>
  33 #include "cachedprimitivebase.hxx"
  34 #include "bitmapaction.hxx"
  35 #include "outdevstate.hxx"
  36 #include "mtftools.hxx"
  37 #include <basegfx/matrix/b2dhommatrixtools.hxx>
  38
  39
  40 using namespace ::com::sun::star;
  41
  42 namespace cppcanvas
  43 {
  44     namespace internal
  45     {
  46         namespace
  47         {
  48
  49             class BitmapAction : public CachedPrimitiveBase
  50             {
  51             public:
  52                 BitmapAction( const ::BitmapEx&,
  53                               const ::basegfx::B2DPoint& rDstPoint,
  54                               const CanvasSharedPtr&,
  55                               const OutDevState& );
  56                 BitmapAction( const ::BitmapEx&,
  57                               const ::basegfx::B2DPoint&  rDstPoint,
  58                               const ::basegfx::B2DVector& rDstSize,
  59                               const CanvasSharedPtr&,
  60                               const OutDevState& );
  61
  62                 virtual bool renderSubset( const ::basegfx::B2DHomMatrix& rTransformation,
  63                                            const Subset&                  rSubset ) const override;
  64
  65                 virtual ::basegfx::B2DRange getBounds( const ::basegfx::B2DHomMatrix& rTransformation ) const override;
  66                 virtual ::basegfx::B2DRange getBounds( const ::basegfx::B2DHomMatrix&   rTransformation,
  67                                                        const Subset&                    rSubset ) const override;
  68
  69                 virtual sal_Int32 getActionCount() const override;
  70
  71             private:
  72                 using Action::render;
  73                 virtual bool renderPrimitive( uno::Reference< rendering::XCachedPrimitive >& rCachedPrimitive,
  74                                               const ::basegfx::B2DHomMatrix&                 rTransformation ) const override;
  75
  76                 uno::Reference< rendering::XBitmap >                    mxBitmap;
  77                 CanvasSharedPtr                                         mpCanvas;
  78                 rendering::RenderState                                  maState;
  79             };
  80
  81
  82             BitmapAction::BitmapAction( const ::BitmapEx&          rBmpEx,
  83                                         const ::basegfx::B2DPoint& rDstPoint,
  84                                         const CanvasSharedPtr&     rCanvas,
  85                                         const OutDevState&         rState ) :
  86                 CachedPrimitiveBase( rCanvas, true ),
  87                 mxBitmap( vcl::unotools::xBitmapFromBitmapEx( rCanvas->getUNOCanvas()->getDevice(),
  88                                                                 rBmpEx ) ),
  89                 mpCanvas( rCanvas ),
  90                 maState()
  91             {
  92                 tools::initRenderState(maState,rState);
  93
  94                 // Setup transformation such that the next render call is
  95                 // moved rPoint away.
  96                 const basegfx::B2DHomMatrix aLocalTransformation(basegfx::tools::createTranslateB2DHomMatrix(rDstPoint));
  97                 ::canvas::tools::appendToRenderState( maState,
  98                                                       aLocalTransformation );
  99
 100                 // correct clip (which is relative to original transform)
 101                 tools::modifyClip( maState,
 102                                    rState,
 103                                    rCanvas,
 104                                    rDstPoint,
 105                                    nullptr,
 106                                    nullptr );
 107             }
 108
 109             BitmapAction::BitmapAction( const ::BitmapEx&           rBmpEx,
 110                                         const ::basegfx::B2DPoint&  rDstPoint,
 111                                         const ::basegfx::B2DVector& rDstSize,
 112                                         const CanvasSharedPtr&      rCanvas,
 113                                         const OutDevState&          rState      ) :
 114                 CachedPrimitiveBase( rCanvas, true ),
 115                 mxBitmap( vcl::unotools::xBitmapFromBitmapEx( rCanvas->getUNOCanvas()->getDevice(),
 116                                                                 rBmpEx ) ),
 117                 mpCanvas( rCanvas ),
 118                 maState()
 119             {
 120                 tools::initRenderState(maState,rState);
 121
 122                 // Setup transformation such that the next render call is
 123                 // moved rPoint away, and scaled according to the ratio
 124                 // given by src and dst size.
 125                 const ::Size aBmpSize( rBmpEx.GetSizePixel() );
 126
 127                 const ::basegfx::B2DVector aScale( rDstSize.getX() / aBmpSize.Width(),
 128                                                    rDstSize.getY() / aBmpSize.Height() );
 129                 const basegfx::B2DHomMatrix aLocalTransformation(basegfx::tools::createScaleTranslateB2DHomMatrix(
 130                     aScale, rDstPoint));
 131                 ::canvas::tools::appendToRenderState( maState, aLocalTransformation );
 132
 133                 // correct clip (which is relative to original transform)
 134                 tools::modifyClip( maState,
 135                                    rState,
 136                                    rCanvas,
 137                                    rDstPoint,
 138                                    &aScale,
 139                                    nullptr );
 140             }
 141
 142             bool BitmapAction::renderPrimitive( uno::Reference< rendering::XCachedPrimitive >& rCachedPrimitive,
 143                                                 const ::basegfx::B2DHomMatrix&                 rTransformation ) const
 144             {
 145                 SAL_INFO( "cppcanvas.emf", "::cppcanvas::internal::BitmapAction::renderPrimitive()" );
 146                 SAL_INFO( "cppcanvas.emf", "::cppcanvas::internal::BitmapAction: 0x" << std::hex << this );
 147
 148                 rendering::RenderState aLocalState( maState );
 149                 ::canvas::tools::prependToRenderState(aLocalState, rTransformation);
 150
 151                 rCachedPrimitive = mpCanvas->getUNOCanvas()->drawBitmap( mxBitmap,
 152                                                                          mpCanvas->getViewState(),
 153                                                                          aLocalState );
 154
 155                 return true;
 156             }
 157
 158             bool BitmapAction::renderSubset( const ::basegfx::B2DHomMatrix&   rTransformation,
 159                                              const Subset&                    rSubset ) const
 160             {
 161                 // bitmap only contains a single action, fail if subset
 162                 // requests different range
 163                 if( rSubset.mnSubsetBegin != 0 ||
 164                     rSubset.mnSubsetEnd != 1 )
 165                     return false;
 166
 167                 return CachedPrimitiveBase::render( rTransformation );
 168             }
 169
 170             ::basegfx::B2DRange BitmapAction::getBounds( const ::basegfx::B2DHomMatrix& rTransformation ) const
 171             {
 172                 rendering::RenderState aLocalState( maState );
 173                 ::canvas::tools::prependToRenderState(aLocalState, rTransformation);
 174
 175                 const geometry::IntegerSize2D aSize( mxBitmap->getSize() );
 176
 177                 return tools::calcDevicePixelBounds( ::basegfx::B2DRange( 0,0,
 178                                                                           aSize.Width,
 179                                                                           aSize.Height ),
 180                                                      mpCanvas->getViewState(),
 181                                                      aLocalState );
 182             }
 183
 184             ::basegfx::B2DRange BitmapAction::getBounds( const ::basegfx::B2DHomMatrix& rTransformation,
 185                                                          const Subset&                  rSubset ) const
 186             {
 187                 // bitmap only contains a single action, empty bounds
 188                 // if subset requests different range
 189                 if( rSubset.mnSubsetBegin != 0 ||
 190                     rSubset.mnSubsetEnd != 1 )
 191                     return ::basegfx::B2DRange();
 192
 193                 return getBounds( rTransformation );
 194             }
 195
 196             sal_Int32 BitmapAction::getActionCount() const
 197             {
 198                 return 1;
 199             }
 200         }
 201
 202         ActionSharedPtr BitmapActionFactory::createBitmapAction( const ::BitmapEx&          rBmpEx,
 203                                                                  const ::basegfx::B2DPoint& rDstPoint,
 204                                                                  const CanvasSharedPtr&     rCanvas,
 205                                                                  const OutDevState&         rState )
 206         {
 207             return ActionSharedPtr( new BitmapAction(rBmpEx,
 208                                                      rDstPoint,
 209                                                      rCanvas,
 210                                                      rState ) );
 211         }
 212
 213         ActionSharedPtr BitmapActionFactory::createBitmapAction( const ::BitmapEx&           rBmpEx,
 214                                                                  const ::basegfx::B2DPoint&  rDstPoint,
 215                                                                  const ::basegfx::B2DVector& rDstSize,
 216                                                                  const CanvasSharedPtr&      rCanvas,
 217                                                                  const OutDevState&          rState )
 218         {
 219             return ActionSharedPtr( new BitmapAction(rBmpEx,
 220                                                      rDstPoint,
 221                                                      rDstSize,
 222                                                      rCanvas,
 223                                                      rState ) );
 224         }
 225     }
 226 }
 227
 228 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */