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 <SvgNumber.hxx>
  21
  22 #include <o3tl/unit_conversion.hxx>
  23 #include <sal/log.hxx>
  24
  25 namespace svgio::svgreader
  26 {
  27
  28 double SvgNumber::solveNonPercentage(const InfoProvider& rInfoProvider) const
  29 {
  30     if (!isSet())
  31     {
  32         SAL_WARN("svgio", "SvgNumber not set (!)");
  33         return 0.0;
  34     }
  35
  36     switch (meUnit)
  37     {
  38         case SvgUnit::em:
  39             return mfNumber * rInfoProvider.getCurrentFontSizeInherited();
  40         case SvgUnit::ex:
  41             return mfNumber * rInfoProvider.getCurrentXHeightInherited() * 0.5;
  42         case SvgUnit::px:
  43             return mfNumber;
  44         case SvgUnit::pt:
  45             return o3tl::convert(mfNumber, o3tl::Length::pt, o3tl::Length::px);
  46         case SvgUnit::pc:
  47             return o3tl::convert(mfNumber, o3tl::Length::pc, o3tl::Length::px);
  48         case SvgUnit::cm:
  49             return o3tl::convert(mfNumber, o3tl::Length::cm, o3tl::Length::px);
  50         case SvgUnit::mm:
  51             return o3tl::convert(mfNumber, o3tl::Length::mm, o3tl::Length::px);
  52         case SvgUnit::in:
  53             return o3tl::convert(mfNumber, o3tl::Length::in, o3tl::Length::px);
  54         case SvgUnit::none:
  55         {
  56             SAL_WARN("svgio", "Design error, this case should have been handled in the caller");
  57             return mfNumber;
  58         }
  59         case SvgUnit::percent:
  60         {
  61             SAL_WARN("svgio", "Do not use with percentage!");
  62             break;
  63         }
  64     }
  65
  66     return 0.0;
  67 }
  68
  69 double SvgNumber::solve(const InfoProvider& rInfoProvider, NumberType aNumberType) const
  70 {
  71     if (!isSet())
  72     {
  73         SAL_WARN("svgio", "SvgNumber not set (!)");
  74         return 0.0;
  75     }
  76
  77     if (meUnit == SvgUnit::percent)
  78     {
  79         double fRetval(mfNumber * 0.01);
  80         basegfx::B2DRange aViewPort = rInfoProvider.getCurrentViewPort();
  81
  82         if ( aViewPort.isEmpty() )
  83         {
  84             SAL_WARN("svgio", "Design error, this case should have been handled in the caller");
  85             // no viewPort, assume a normal page size (A4)
  86             aViewPort = basegfx::B2DRange(
  87                 0.0,
  88                 0.0,
  89                 o3tl::convert(210.0, o3tl::Length::cm, o3tl::Length::px), // should it be mm?
  90                 o3tl::convert(297.0, o3tl::Length::cm, o3tl::Length::px));
  91
  92         }
  93
  94         if ( !aViewPort.isEmpty() )
  95         {
  96             if (NumberType::xcoordinate == aNumberType)
  97             {
  98                 // it's a x-coordinate, relative to current width (w)
  99                 fRetval *= aViewPort.getWidth();
 100             }
 101             else if (NumberType::ycoordinate == aNumberType)
 102             {
 103                 // it's a y-coordinate, relative to current height (h)
 104                 fRetval *= aViewPort.getHeight();
 105             }
 106             else // length
 107             {
 108                 // it's a length, relative to sqrt((w^2 + h^2)/2)
 109                 const double fCurrentWidth(aViewPort.getWidth());
 110                 const double fCurrentHeight(aViewPort.getHeight());
 111                 const double fCurrentLength(
 112                     sqrt((fCurrentWidth * fCurrentWidth + fCurrentHeight * fCurrentHeight)/2.0));
 113
 114                 fRetval *= fCurrentLength;
 115             }
 116         }
 117
 118         return fRetval;
 119     }
 120
 121     return solveNonPercentage( rInfoProvider);
 122 }
 123
 124 } // end of namespace svgio::svgreader
 125
 126 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */