drawinglayer/source/primitive2d/wallpaperprimitive2d.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 #include <drawinglayer/primitive2d/wallpaperprimitive2d.hxx>
  21 #include <drawinglayer/primitive2d/bitmapprimitive2d.hxx>
  22 #include <drawinglayer/primitive2d/drawinglayer_primitivetypes2d.hxx>
  23 #include <drawinglayer/primitive2d/fillbitmapprimitive2d.hxx>
  24 #include <basegfx/polygon/b2dpolygontools.hxx>
  25 #include <basegfx/polygon/b2dpolygon.hxx>
  26 #include <drawinglayer/primitive2d/maskprimitive2d.hxx>
  27
  28 //////////////////////////////////////////////////////////////////////////////
  29
  30 namespace drawinglayer
  31 {
  32     namespace primitive2d
  33     {
  34         Primitive2DSequence WallpaperBitmapPrimitive2D::create2DDecomposition(const geometry::ViewInformation2D& /*rViewInformation*/) const
  35         {
  36             Primitive2DSequence aRetval;
  37
  38             if(!getLocalObjectRange().isEmpty() && !getBitmapEx().IsEmpty())
  39             {
  40                 // get bitmap PIXEL size
  41                 const Size& rPixelSize = getBitmapEx().GetSizePixel();
  42
  43                 if(rPixelSize.Width() > 0 && rPixelSize.Height() > 0)
  44                 {
  45                     if(WALLPAPER_SCALE == getWallpaperStyle())
  46                     {
  47                         // shortcut for scale; use simple BitmapPrimitive2D
  48                         basegfx::B2DHomMatrix aObjectTransform;
  49
  50                         aObjectTransform.set(0, 0, getLocalObjectRange().getWidth());
  51                         aObjectTransform.set(1, 1, getLocalObjectRange().getHeight());
  52                         aObjectTransform.set(0, 2, getLocalObjectRange().getMinX());
  53                         aObjectTransform.set(1, 2, getLocalObjectRange().getMinY());
  54
  55                         Primitive2DReference xReference(
  56                             new BitmapPrimitive2D(
  57                                 getBitmapEx(),
  58                                 aObjectTransform));
  59
  60                         aRetval = Primitive2DSequence(&xReference, 1);
  61                     }
  62                     else
  63                     {
  64                         // transform to logic size
  65                         basegfx::B2DHomMatrix aInverseViewTransformation(getViewTransformation());
  66                         aInverseViewTransformation.invert();
  67                         basegfx::B2DVector aLogicSize(rPixelSize.Width(), rPixelSize.Height());
  68                         aLogicSize = aInverseViewTransformation * aLogicSize;
  69
  70                         // apply laout
  71                         basegfx::B2DPoint aTargetTopLeft(getLocalObjectRange().getMinimum());
  72                         bool bUseTargetTopLeft(true);
  73                         bool bNeedsClipping(false);
  74
  75                         switch(getWallpaperStyle())
  76                         {
  77                             default: //case WALLPAPER_TILE :, also WALLPAPER_NULL and WALLPAPER_APPLICATIONGRADIENT
  78                             {
  79                                 bUseTargetTopLeft = false;
  80                                 break;
  81                             }
  82                             case WALLPAPER_SCALE :
  83                             {
  84                                 // handled by shortcut above
  85                                 break;
  86                             }
  87                             case WALLPAPER_TOPLEFT :
  88                             {
  89                                 // nothing to do
  90                                 break;
  91                             }
  92                             case WALLPAPER_TOP :
  93                             {
  94                                 const basegfx::B2DPoint aCenter(getLocalObjectRange().getCenter());
  95                                 aTargetTopLeft.setX(aCenter.getX() - (aLogicSize.getX() * 0.5));
  96                                 break;
  97                             }
  98                             case WALLPAPER_TOPRIGHT :
  99                             {
 100                                 aTargetTopLeft.setX(getLocalObjectRange().getMaxX() - aLogicSize.getX());
 101                                 break;
 102                             }
 103                             case WALLPAPER_LEFT :
 104                             {
 105                                 const basegfx::B2DPoint aCenter(getLocalObjectRange().getCenter());
 106                                 aTargetTopLeft.setY(aCenter.getY() - (aLogicSize.getY() * 0.5));
 107                                 break;
 108                             }
 109                             case WALLPAPER_CENTER :
 110                             {
 111                                 const basegfx::B2DPoint aCenter(getLocalObjectRange().getCenter());
 112                                 aTargetTopLeft = aCenter - (aLogicSize * 0.5);
 113                                 break;
 114                             }
 115                             case WALLPAPER_RIGHT :
 116                             {
 117                                 const basegfx::B2DPoint aCenter(getLocalObjectRange().getCenter());
 118                                 aTargetTopLeft.setX(getLocalObjectRange().getMaxX() - aLogicSize.getX());
 119                                 aTargetTopLeft.setY(aCenter.getY() - (aLogicSize.getY() * 0.5));
 120                                 break;
 121                             }
 122                             case WALLPAPER_BOTTOMLEFT :
 123                             {
 124                                 aTargetTopLeft.setY(getLocalObjectRange().getMaxY() - aLogicSize.getY());
 125                                 break;
 126                             }
 127                             case WALLPAPER_BOTTOM :
 128                             {
 129                                 const basegfx::B2DPoint aCenter(getLocalObjectRange().getCenter());
 130                                 aTargetTopLeft.setX(aCenter.getX() - (aLogicSize.getX() * 0.5));
 131                                 aTargetTopLeft.setY(getLocalObjectRange().getMaxY() - aLogicSize.getY());
 132                                 break;
 133                             }
 134                             case WALLPAPER_BOTTOMRIGHT :
 135                             {
 136                                 aTargetTopLeft = getLocalObjectRange().getMaximum() - aLogicSize;
 137                                 break;
 138                             }
 139                         }
 140
 141                         if(bUseTargetTopLeft)
 142                         {
 143                             // fill target range
 144                             const basegfx::B2DRange aTargetRange(aTargetTopLeft, aTargetTopLeft + aLogicSize);
 145
 146                             // create aligned, single BitmapPrimitive2D
 147                             basegfx::B2DHomMatrix aObjectTransform;
 148
 149                             aObjectTransform.set(0, 0, aTargetRange.getWidth());
 150                             aObjectTransform.set(1, 1, aTargetRange.getHeight());
 151                             aObjectTransform.set(0, 2, aTargetRange.getMinX());
 152                             aObjectTransform.set(1, 2, aTargetRange.getMinY());
 153
 154                             Primitive2DReference xReference(
 155                                 new BitmapPrimitive2D(
 156                                     getBitmapEx(),
 157                                     aObjectTransform));
 158                             aRetval = Primitive2DSequence(&xReference, 1);
 159
 160                             // clip when not completely inside object range
 161                             bNeedsClipping = !getLocalObjectRange().isInside(aTargetRange);
 162                         }
 163                         else
 164                         {
 165                             // WALLPAPER_TILE, WALLPAPER_NULL, WALLPAPER_APPLICATIONGRADIENT
 166                             // convert to relative positions
 167                             const basegfx::B2DVector aRelativeSize(
 168                                 aLogicSize.getX() / (getLocalObjectRange().getWidth() ? getLocalObjectRange().getWidth() : 1.0),
 169                                 aLogicSize.getY() / (getLocalObjectRange().getHeight() ? getLocalObjectRange().getHeight() : 1.0));
 170                             basegfx::B2DPoint aRelativeTopLeft(0.0, 0.0);
 171
 172                             if(WALLPAPER_TILE != getWallpaperStyle())
 173                             {
 174                                 aRelativeTopLeft.setX(0.5 - aRelativeSize.getX());
 175                                 aRelativeTopLeft.setY(0.5 - aRelativeSize.getY());
 176                             }
 177
 178                             // prepare FillBitmapAttribute
 179                             const attribute::FillBitmapAttribute aFillBitmapAttribute(
 180                                 getBitmapEx(),
 181                                 aRelativeTopLeft,
 182                                 aRelativeSize,
 183                                 true);
 184
 185                             // create ObjectTransform
 186                             basegfx::B2DHomMatrix aObjectTransform;
 187
 188                             aObjectTransform.set(0, 0, getLocalObjectRange().getWidth());
 189                             aObjectTransform.set(1, 1, getLocalObjectRange().getHeight());
 190                             aObjectTransform.set(0, 2, getLocalObjectRange().getMinX());
 191                             aObjectTransform.set(1, 2, getLocalObjectRange().getMinY());
 192
 193                             // create FillBitmapPrimitive
 194                             const drawinglayer::primitive2d::Primitive2DReference xFillBitmap(
 195                                 new drawinglayer::primitive2d::FillBitmapPrimitive2D(
 196                                     aObjectTransform,
 197                                     aFillBitmapAttribute));
 198                             aRetval = Primitive2DSequence(&xFillBitmap, 1);
 199
 200                             // always embed tiled fill to clipping
 201                             bNeedsClipping = true;
 202                         }
 203
 204                         if(bNeedsClipping)
 205                         {
 206                             // embed to clipping; this is necessary for tiled fills
 207                             const basegfx::B2DPolyPolygon aPolyPolygon(
 208                                 basegfx::tools::createPolygonFromRect(getLocalObjectRange()));
 209                             const drawinglayer::primitive2d::Primitive2DReference xClippedFill(
 210                                 new drawinglayer::primitive2d::MaskPrimitive2D(
 211                                     aPolyPolygon,
 212                                     aRetval));
 213                             aRetval = Primitive2DSequence(&xClippedFill, 1);
 214                         }
 215                     }
 216                 }
 217             }
 218
 219             return aRetval;
 220         }
 221
 222         WallpaperBitmapPrimitive2D::WallpaperBitmapPrimitive2D(
 223             const basegfx::B2DRange& rObjectRange,
 224             const BitmapEx& rBitmapEx,
 225             WallpaperStyle eWallpaperStyle)
 226         :   ViewTransformationDependentPrimitive2D(),
 227             maObjectRange(rObjectRange),
 228             maBitmapEx(rBitmapEx),
 229             meWallpaperStyle(eWallpaperStyle)
 230         {
 231         }
 232
 233         bool WallpaperBitmapPrimitive2D::operator==(const BasePrimitive2D& rPrimitive) const
 234         {
 235             if(ViewTransformationDependentPrimitive2D::operator==(rPrimitive))
 236             {
 237                 const WallpaperBitmapPrimitive2D& rCompare = (WallpaperBitmapPrimitive2D&)rPrimitive;
 238
 239                 return (getLocalObjectRange() == rCompare.getLocalObjectRange()
 240                     && getBitmapEx() == rCompare.getBitmapEx()
 241                     && getWallpaperStyle() == rCompare.getWallpaperStyle());
 242             }
 243
 244             return false;
 245         }
 246
 247         basegfx::B2DRange WallpaperBitmapPrimitive2D::getB2DRange(const geometry::ViewInformation2D& /*rViewInformation*/) const
 248         {
 249             return getLocalObjectRange();
 250         }
 251
 252         // provide unique ID
 253         ImplPrimitive2DIDBlock(WallpaperBitmapPrimitive2D, PRIMITIVE2D_ID_WALLPAPERBITMAPPRIMITIVE2D)
 254     } // end of namespace primitive2d
 255 } // end of namespace drawinglayer
 256
 257 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */