drawinglayer/source/primitive2d/pagepreviewprimitive2d.cxx

   1 /*************************************************************************
   2  *
   3  *  OpenOffice.org - a multi-platform office productivity suite
   4  *
   5  *  $RCSfile: pagepreviewprimitive2d.cxx,v $
   6  *
   7  *  $Revision: 1.3 $
   8  *
   9  *  last change: $Author: aw $ $Date: 2008-05-27 14:11:20 $
  10  *
  11  *  The Contents of this file are made available subject to
  12  *  the terms of GNU Lesser General Public License Version 2.1.
  13  *
  14  *
  15  *    GNU Lesser General Public License Version 2.1
  16  *    =============================================
  17  *    Copyright 2005 by Sun Microsystems, Inc.
  18  *    901 San Antonio Road, Palo Alto, CA 94303, USA
  19  *
  20  *    This library is free software; you can redistribute it and/or
  21  *    modify it under the terms of the GNU Lesser General Public
  22  *    License version 2.1, as published by the Free Software Foundation.
  23  *
  24  *    This library is distributed in the hope that it will be useful,
  25  *    but WITHOUT ANY WARRANTY; without even the implied warranty of
  26  *    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  27  *    Lesser General Public License for more details.
  28  *
  29  *    You should have received a copy of the GNU Lesser General Public
  30  *    License along with this library; if not, write to the Free Software
  31  *    Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  32  *    MA  02111-1307  USA
  33  *
  34  ************************************************************************/
  35
  36 // MARKER(update_precomp.py): autogen include statement, do not remove
  37 #include "precompiled_drawinglayer.hxx"
  38
  39 #include <drawinglayer/primitive2d/pagepreviewprimitive2d.hxx>
  40 #include <drawinglayer/primitive2d/drawinglayer_primitivetypes2d.hxx>
  41 #include <drawinglayer/primitive2d/maskprimitive2d.hxx>
  42 #include <basegfx/polygon/b2dpolygontools.hxx>
  43 #include <basegfx/polygon/b2dpolygon.hxx>
  44 #include <drawinglayer/primitive2d/transformprimitive2d.hxx>
  45
  46 //////////////////////////////////////////////////////////////////////////////
  47
  48 using namespace com::sun::star;
  49
  50 //////////////////////////////////////////////////////////////////////////////
  51
  52 namespace drawinglayer
  53 {
  54     namespace primitive2d
  55     {
  56         Primitive2DSequence PagePreviewPrimitive2D::createLocalDecomposition(const geometry::ViewInformation2D& rViewInformation) const
  57         {
  58             Primitive2DSequence xRetval;
  59             Primitive2DSequence aContent(getChildren());
  60
  61             if(aContent.hasElements()
  62                 && basegfx::fTools::more(getContentWidth(), 0.0)
  63                 && basegfx::fTools::more(getContentHeight(), 0.0))
  64             {
  65                 // the decomposed matrix will be needed
  66                 basegfx::B2DVector aScale, aTranslate;
  67                 double fRotate, fShearX;
  68                 getTransform().decompose(aScale, aTranslate, fRotate, fShearX);
  69
  70                 if(basegfx::fTools::more(aScale.getX(), 0.0) && basegfx::fTools::more(aScale.getY(), 0.0))
  71                 {
  72                     // check if content overlaps with tageted size and needs to be embedded with a
  73                     // clipping primitive
  74                     const basegfx::B2DRange aRealContentRange(getB2DRangeFromPrimitive2DSequence(aContent, rViewInformation));
  75                     const basegfx::B2DRange aAllowedContentRange(0.0, 0.0, getContentWidth(), getContentHeight());
  76
  77                     if(!aAllowedContentRange.isInside(aRealContentRange))
  78                     {
  79                         const Primitive2DReference xReferenceA(new MaskPrimitive2D(basegfx::B2DPolyPolygon(basegfx::tools::createPolygonFromRect(aAllowedContentRange)), aContent));
  80                         aContent = Primitive2DSequence(&xReferenceA, 1);
  81                     }
  82
  83                     // create a mapping from content to object.
  84                     basegfx::B2DHomMatrix aPageTrans;
  85
  86                     if(getKeepAspectRatio())
  87                     {
  88                         // #i101075# when keeping the aspect ratio is wanted, it is necessary to calculate
  89                         // an equidistant scaling in X and Y and a corresponding translation to
  90                         // center the output. Calculate needed scale factors
  91                         const double fScaleX(aScale.getX() / getContentWidth());
  92                         const double fScaleY(aScale.getY() / getContentHeight());
  93
  94                         // to keep the aspect, use the smaller scale and adapt missing size by translation
  95                         if(fScaleX < fScaleY)
  96                         {
  97                             // height needs to be adapted
  98                             const double fNeededHeight(aScale.getY() / fScaleX);
  99                             const double fSpaceToAdd(fNeededHeight - getContentHeight());
 100
 101                             aPageTrans.translate(0.0, fSpaceToAdd * 0.5);
 102                             aPageTrans.scale(fScaleX, aScale.getY() / fNeededHeight);
 103                         }
 104                         else
 105                         {
 106                             // width needs to be adapted
 107                             const double fNeededWidth(aScale.getX() / fScaleY);
 108                             const double fSpaceToAdd(fNeededWidth - getContentWidth());
 109
 110                             aPageTrans.translate(fSpaceToAdd * 0.5, 0.0);
 111                             aPageTrans.scale(aScale.getX() / fNeededWidth, fScaleY);
 112                         }
 113
 114                         // add the missing object transformation aspects
 115                         aPageTrans.shearX(fShearX);
 116                         aPageTrans.rotate(fRotate);
 117                         aPageTrans.translate(aTranslate.getX(), aTranslate.getY());
 118                     }
 119                     else
 120                     {
 121                         // completely scale to PageObject size. Scale to unit size.
 122                         aPageTrans.scale(1.0/ getContentWidth(), 1.0 / getContentHeight());
 123
 124                         // apply object matrix
 125                         aPageTrans *= getTransform();
 126                     }
 127
 128                     // embed in necessary transformation to map from SdrPage to SdrPageObject
 129                     const Primitive2DReference xReferenceB(new TransformPrimitive2D(aPageTrans, aContent));
 130                     xRetval = Primitive2DSequence(&xReferenceB, 1);
 131                 }
 132             }
 133
 134             return xRetval;
 135         }
 136
 137         PagePreviewPrimitive2D::PagePreviewPrimitive2D(
 138             const ::com::sun::star::uno::Reference< ::com::sun::star::drawing::XDrawPage >& rxDrawPage,
 139             const basegfx::B2DHomMatrix& rTransform,
 140             double fContentWidth,
 141             double fContentHeight,
 142             const Primitive2DSequence& rChildren,
 143             bool bKeepAspectRatio)
 144         :       GroupPrimitive2D(rChildren),
 145             mxDrawPage(rxDrawPage),
 146             maTransform(rTransform),
 147             mfContentWidth(fContentWidth),
 148             mfContentHeight(fContentHeight),
 149             mbKeepAspectRatio(bKeepAspectRatio)
 150         {
 151         }
 152
 153         bool PagePreviewPrimitive2D::operator==(const BasePrimitive2D& rPrimitive) const
 154         {
 155             if(GroupPrimitive2D::operator==(rPrimitive))
 156             {
 157                 const PagePreviewPrimitive2D& rCompare = static_cast< const PagePreviewPrimitive2D& >(rPrimitive);
 158
 159                 return (getXDrawPage() == rCompare.getXDrawPage()
 160                     && getTransform() == rCompare.getTransform()
 161                     && getContentWidth() == rCompare.getContentWidth()
 162                     && getContentHeight() == rCompare.getContentHeight()
 163                     && getKeepAspectRatio() == rCompare.getKeepAspectRatio());
 164             }
 165
 166             return false;
 167         }
 168
 169         basegfx::B2DRange PagePreviewPrimitive2D::getB2DRange(const geometry::ViewInformation2D& /*rViewInformation`*/) const
 170         {
 171             // nothing is allowed to stick out of a PagePreviewPrimitive, thus we
 172             // can quickly deliver our range here
 173             basegfx::B2DRange aRetval(0.0, 0.0, 1.0, 1.0);
 174             aRetval.transform(getTransform());
 175             return aRetval;
 176         }
 177
 178         // provide unique ID
 179         ImplPrimitrive2DIDBlock(PagePreviewPrimitive2D, PRIMITIVE2D_ID_PAGEPREVIEWPRIMITIVE2D)
 180
 181     } // end of namespace primitive2d
 182 } // end of namespace drawinglayer
 183
 184 //////////////////////////////////////////////////////////////////////////////
 185 // eof