svgio/source/svgreader/SvgNumber.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 <svgtools.hxx>
  21 #include <sal/log.hxx>
  22
  23 namespace svgio::svgreader
  24 {
  25
  26 double SvgNumber::solveNonPercentage(const InfoProvider& rInfoProvider) const
  27 {
  28     if (!isSet())
  29     {
  30         SAL_WARN("svgio", "SvgNumber not set (!)");
  31         return 0.0;
  32     }
  33
  34     switch (meUnit)
  35     {
  36         case SvgUnit::em:
  37             return mfNumber * rInfoProvider.getCurrentFontSizeInherited();
  38         case SvgUnit::ex:
  39             return mfNumber * rInfoProvider.getCurrentXHeightInherited() * 0.5;
  40         case SvgUnit::px:
  41             return mfNumber;
  42         case SvgUnit::pt:
  43             return mfNumber * F_SVG_PIXEL_PER_INCH / 72.0;
  44         case SvgUnit::pc:
  45             return mfNumber * F_SVG_PIXEL_PER_INCH / 6.0;
  46         case SvgUnit::cm:
  47             return mfNumber * F_SVG_PIXEL_PER_INCH / 2.54;
  48         case SvgUnit::mm:
  49             return mfNumber * 0.1 * F_SVG_PIXEL_PER_INCH / 2.54;
  50         case SvgUnit::in:
  51             return mfNumber * F_SVG_PIXEL_PER_INCH;
  52         case SvgUnit::none:
  53         {
  54             SAL_WARN("svgio", "Design error, this case should have been handled in the caller");
  55             return mfNumber;
  56         }
  57         case SvgUnit::percent:
  58         {
  59             SAL_WARN("svgio", "Do not use with percentage!");
  60             break;
  61         }
  62     }
  63
  64     return 0.0;
  65 }
  66
  67 double SvgNumber::solve(const InfoProvider& rInfoProvider, NumberType aNumberType) const
  68 {
  69     if (!isSet())
  70     {
  71         SAL_WARN("svgio", "SvgNumber not set (!)");
  72         return 0.0;
  73     }
  74
  75     if (meUnit == SvgUnit::percent)
  76     {
  77         double fRetval(mfNumber * 0.01);
  78         basegfx::B2DRange aViewPort = rInfoProvider.getCurrentViewPort();
  79
  80         if ( aViewPort.isEmpty() )
  81         {
  82             SAL_WARN("svgio", "Design error, this case should have been handled in the caller");
  83             // no viewPort, assume a normal page size (A4)
  84             aViewPort = basegfx::B2DRange(
  85                 0.0,
  86                 0.0,
  87                 210.0 * F_SVG_PIXEL_PER_INCH / 2.54,
  88                 297.0 * F_SVG_PIXEL_PER_INCH / 2.54);
  89
  90         }
  91
  92         if ( !aViewPort.isEmpty() )
  93         {
  94             if (NumberType::xcoordinate == aNumberType)
  95             {
  96                 // it's a x-coordinate, relative to current width (w)
  97                 fRetval *= aViewPort.getWidth();
  98             }
  99             else if (NumberType::ycoordinate == aNumberType)
 100             {
 101                 // it's a y-coordinate, relative to current height (h)
 102                 fRetval *= aViewPort.getHeight();
 103             }
 104             else // length
 105             {
 106                 // it's a length, relative to sqrt(w*w + h*h)/sqrt(2)
 107                 const double fCurrentWidth(aViewPort.getWidth());
 108                 const double fCurrentHeight(aViewPort.getHeight());
 109                 const double fCurrentLength(
 110                     sqrt(fCurrentWidth * fCurrentWidth + fCurrentHeight * fCurrentHeight)/sqrt(2.0));
 111
 112                 fRetval *= fCurrentLength;
 113             }
 114         }
 115
 116         return fRetval;
 117     }
 118
 119     return solveNonPercentage( rInfoProvider);
 120 }
 121
 122 } // end of namespace svgio::svgreader
 123
 124 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */