vcl/source/gdi/mapmod.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 <vcl/mapmod.hxx>
  21
  22 #include <o3tl/hash_combine.hxx>
  23 #include <tools/gen.hxx>
  24 #include <tools/fract.hxx>
  25 #include <tools/stream.hxx>
  26 #include <tools/vcompat.hxx>
  27 #include <vcl/TypeSerializer.hxx>
  28
  29 struct MapMode::ImplMapMode
  30 {
  31     MapUnit         meUnit;
  32     bool            mbSimple;
  33     Point           maOrigin;
  34     // NOTE: these Fraction must NOT have more than 32 bits precision
  35     // because ReadFraction / WriteFraction do only 32 bits, so more than
  36     // that cannot be stored in MetaFiles!
  37     // => call ReduceInaccurate whenever setting these
  38     Fraction        maScaleX;
  39     Fraction        maScaleY;
  40
  41     ImplMapMode();
  42     ImplMapMode(MapUnit eMapUnit);
  43     ImplMapMode(const ImplMapMode& rImpMapMode);
  44
  45     bool operator==( const ImplMapMode& rImpMapMode ) const;
  46 };
  47
  48 MapMode::ImplMapMode::ImplMapMode() :
  49     maOrigin( 0, 0 ),
  50     maScaleX( 1, 1 ),
  51     maScaleY( 1, 1 )
  52 {
  53     meUnit   = MapUnit::MapPixel;
  54     mbSimple = true;
  55 }
  56
  57 MapMode::ImplMapMode::ImplMapMode(MapUnit eMapUnit) :
  58     maOrigin( 0, 0 ),
  59     maScaleX( 1, 1 ),
  60     maScaleY( 1, 1 )
  61 {
  62     meUnit   = eMapUnit;
  63     mbSimple = true;
  64 }
  65
  66 MapMode::ImplMapMode::ImplMapMode( const ImplMapMode& ) = default;
  67
  68 bool MapMode::ImplMapMode::operator==( const ImplMapMode& rImpMapMode ) const
  69 {
  70     return meUnit == rImpMapMode.meUnit
  71         && maOrigin == rImpMapMode.maOrigin
  72         && maScaleX == rImpMapMode.maScaleX
  73         && maScaleY == rImpMapMode.maScaleY;
  74 }
  75
  76 namespace
  77 {
  78
  79     MapMode::ImplType& GetGlobalDefault()
  80     {
  81         static MapMode::ImplType gDefault;
  82         return gDefault;
  83     }
  84     MapMode::ImplType GetUnitDefault(MapUnit mapUnit)
  85     {
  86         static MapMode::ImplType defaults[]
  87         {
  88             MapMode::ImplType( MapMode::ImplMapMode(MapUnit::Map100thMM) ),
  89             MapMode::ImplType( MapMode::ImplMapMode(MapUnit::Map10thMM) ),
  90             MapMode::ImplType( MapMode::ImplMapMode(MapUnit::MapMM) ),
  91             MapMode::ImplType( MapMode::ImplMapMode(MapUnit::MapCM) ),
  92             MapMode::ImplType( MapMode::ImplMapMode(MapUnit::Map1000thInch) ),
  93             MapMode::ImplType( MapMode::ImplMapMode(MapUnit::Map100thInch) ),
  94             MapMode::ImplType( MapMode::ImplMapMode(MapUnit::Map10thInch) ),
  95             MapMode::ImplType( MapMode::ImplMapMode(MapUnit::MapInch) ),
  96             MapMode::ImplType( MapMode::ImplMapMode(MapUnit::MapPoint) ),
  97             MapMode::ImplType( MapMode::ImplMapMode(MapUnit::MapTwip) ),
  98             MapMode::ImplType( MapMode::ImplMapMode(MapUnit::MapPixel) ),
  99             MapMode::ImplType( MapMode::ImplMapMode(MapUnit::MapSysFont) ),
 100             MapMode::ImplType( MapMode::ImplMapMode(MapUnit::MapAppFont) ),
 101             MapMode::ImplType( MapMode::ImplMapMode(MapUnit::MapRelative) ),
 102         };
 103         if (mapUnit <= MapUnit::MapRelative) {
 104             return MapMode::ImplType(defaults[static_cast<int>(mapUnit)]); // [-loplugin:redundantfcast] false positive
 105         }
 106         // sometimes the SvmReader stuff will generate a bogus mapunit value
 107         return MapMode::ImplType(MapMode::ImplMapMode(mapUnit));
 108     }
 109 }
 110
 111 MapMode::MapMode() : mpImplMapMode(GetGlobalDefault())
 112 {
 113 }
 114
 115 MapMode::MapMode( const MapMode& ) = default;
 116
 117 MapMode::MapMode( MapUnit eUnit ) : mpImplMapMode(GetUnitDefault(eUnit))
 118 {
 119 }
 120
 121 MapMode::MapMode( MapUnit eUnit, const Point& rLogicOrg,
 122                   const Fraction& rScaleX, const Fraction& rScaleY )
 123 {
 124     mpImplMapMode->meUnit   = eUnit;
 125     mpImplMapMode->maOrigin = rLogicOrg;
 126     mpImplMapMode->maScaleX = rScaleX;
 127     mpImplMapMode->maScaleY = rScaleY;
 128     mpImplMapMode->mbSimple = false;
 129 }
 130
 131 MapMode::~MapMode() = default;
 132
 133 void MapMode::SetMapUnit( MapUnit eUnit )
 134 {
 135     mpImplMapMode->meUnit = eUnit;
 136 }
 137
 138 void MapMode::SetOrigin( const Point& rLogicOrg )
 139 {
 140     mpImplMapMode->maOrigin = rLogicOrg;
 141     mpImplMapMode->mbSimple = false;
 142 }
 143
 144 void MapMode::SetScaleX( const Fraction& rScaleX )
 145 {
 146     mpImplMapMode->maScaleX = rScaleX;
 147     mpImplMapMode->mbSimple = false;
 148 }
 149
 150 void MapMode::SetScaleY( const Fraction& rScaleY )
 151 {
 152     mpImplMapMode->maScaleY = rScaleY;
 153     mpImplMapMode->mbSimple = false;
 154 }
 155
 156 MapMode& MapMode::operator=( const MapMode& ) = default;
 157
 158 MapMode& MapMode::operator=( MapMode&& ) = default;
 159
 160 bool MapMode::operator==( const MapMode& rMapMode ) const
 161 {
 162    return mpImplMapMode == rMapMode.mpImplMapMode;
 163 }
 164
 165 bool MapMode::IsDefault() const
 166 {
 167     return mpImplMapMode.same_object(GetGlobalDefault());
 168 }
 169
 170 size_t MapMode::GetHashValue() const
 171 {
 172     size_t hash = 0;
 173     o3tl::hash_combine( hash, mpImplMapMode->meUnit );
 174     o3tl::hash_combine( hash, mpImplMapMode->maOrigin.GetHashValue());
 175     o3tl::hash_combine( hash, mpImplMapMode->maScaleX.GetHashValue());
 176     o3tl::hash_combine( hash, mpImplMapMode->maScaleY.GetHashValue());
 177     o3tl::hash_combine( hash, mpImplMapMode->mbSimple );
 178     return hash;
 179 }
 180
 181 MapUnit MapMode::GetMapUnit() const { return mpImplMapMode->meUnit; }
 182
 183 const Point& MapMode::GetOrigin() const { return mpImplMapMode->maOrigin; }
 184
 185 const Fraction& MapMode::GetScaleX() const { return mpImplMapMode->maScaleX; }
 186
 187 const Fraction& MapMode::GetScaleY() const { return mpImplMapMode->maScaleY; }
 188
 189 bool MapMode::IsSimple() const { return mpImplMapMode->mbSimple; }
 190
 191 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */