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 <tools/gen.hxx>
  23 #include <tools/fract.hxx>
  24 #include <tools/stream.hxx>
  25 #include <tools/vcompat.hxx>
  26 #include <rtl/instance.hxx>
  27 #include <TypeSerializer.hxx>
  28
  29 struct MapMode::ImplMapMode
  30 {
  31     MapUnit         meUnit;
  32     Point           maOrigin;
  33     // NOTE: these Fraction must NOT have more than 32 bits precision
  34     // because ReadFraction / WriteFraction do only 32 bits, so more than
  35     // that cannot be stored in MetaFiles!
  36     // => call ReduceInaccurate whenever setting these
  37     Fraction        maScaleX;
  38     Fraction        maScaleY;
  39     bool            mbSimple;
  40
  41     ImplMapMode();
  42     ImplMapMode(const ImplMapMode& rImpMapMode);
  43
  44     bool operator==( const ImplMapMode& rImpMapMode ) const;
  45 };
  46
  47 MapMode::ImplMapMode::ImplMapMode() :
  48     maOrigin( 0, 0 ),
  49     maScaleX( 1, 1 ),
  50     maScaleY( 1, 1 )
  51 {
  52     meUnit   = MapUnit::MapPixel;
  53     mbSimple = true;
  54 }
  55
  56 MapMode::ImplMapMode::ImplMapMode( const ImplMapMode& ) = default;
  57
  58 bool MapMode::ImplMapMode::operator==( const ImplMapMode& rImpMapMode ) const
  59 {
  60     return meUnit == rImpMapMode.meUnit
  61         && maOrigin == rImpMapMode.maOrigin
  62         && maScaleX == rImpMapMode.maScaleX
  63         && maScaleY == rImpMapMode.maScaleY;
  64 }
  65
  66 namespace
  67 {
  68     struct theGlobalDefault :
  69         public rtl::Static< MapMode::ImplType, theGlobalDefault > {};
  70 }
  71
  72 MapMode::MapMode() : mpImplMapMode(theGlobalDefault::get())
  73 {
  74 }
  75
  76 MapMode::MapMode( const MapMode& ) = default;
  77
  78 MapMode::MapMode( MapUnit eUnit ) : mpImplMapMode()
  79 {
  80     mpImplMapMode->meUnit = eUnit;
  81 }
  82
  83 MapMode::MapMode( MapUnit eUnit, const Point& rLogicOrg,
  84                   const Fraction& rScaleX, const Fraction& rScaleY )
  85 {
  86     mpImplMapMode->meUnit   = eUnit;
  87     mpImplMapMode->maOrigin = rLogicOrg;
  88     mpImplMapMode->maScaleX = rScaleX;
  89     mpImplMapMode->maScaleY = rScaleY;
  90     mpImplMapMode->maScaleX.ReduceInaccurate(32);
  91     mpImplMapMode->maScaleY.ReduceInaccurate(32);
  92     mpImplMapMode->mbSimple = false;
  93 }
  94
  95 MapMode::~MapMode() = default;
  96
  97 void MapMode::SetMapUnit( MapUnit eUnit )
  98 {
  99     mpImplMapMode->meUnit = eUnit;
 100 }
 101
 102 void MapMode::SetOrigin( const Point& rLogicOrg )
 103 {
 104     mpImplMapMode->maOrigin = rLogicOrg;
 105     mpImplMapMode->mbSimple = false;
 106 }
 107
 108 void MapMode::SetScaleX( const Fraction& rScaleX )
 109 {
 110     mpImplMapMode->maScaleX = rScaleX;
 111     mpImplMapMode->maScaleX.ReduceInaccurate(32);
 112     mpImplMapMode->mbSimple = false;
 113 }
 114
 115 void MapMode::SetScaleY( const Fraction& rScaleY )
 116 {
 117     mpImplMapMode->maScaleY = rScaleY;
 118     mpImplMapMode->maScaleY.ReduceInaccurate(32);
 119     mpImplMapMode->mbSimple = false;
 120 }
 121
 122 MapMode& MapMode::operator=( const MapMode& ) = default;
 123
 124 MapMode& MapMode::operator=( MapMode&& ) = default;
 125
 126 bool MapMode::operator==( const MapMode& rMapMode ) const
 127 {
 128    return mpImplMapMode == rMapMode.mpImplMapMode;
 129 }
 130
 131 bool MapMode::IsDefault() const
 132 {
 133     return mpImplMapMode.same_object(theGlobalDefault::get());
 134 }
 135
 136 SvStream& ReadMapMode( SvStream& rIStm, MapMode& rMapMode )
 137 {
 138     VersionCompat aCompat( rIStm, StreamMode::READ );
 139     sal_uInt16    nTmp16;
 140
 141     TypeSerializer aSerializer(rIStm);
 142
 143     rIStm.ReadUInt16( nTmp16 ); rMapMode.mpImplMapMode->meUnit = static_cast<MapUnit>(nTmp16);
 144     aSerializer.readPoint(rMapMode.mpImplMapMode->maOrigin);
 145     ReadFraction( rIStm, rMapMode.mpImplMapMode->maScaleX );
 146     ReadFraction( rIStm, rMapMode.mpImplMapMode->maScaleY );
 147     rIStm.ReadCharAsBool( rMapMode.mpImplMapMode->mbSimple );
 148
 149     return rIStm;
 150 }
 151
 152 SvStream& WriteMapMode( SvStream& rOStm, const MapMode& rMapMode )
 153 {
 154     VersionCompat aCompat( rOStm, StreamMode::WRITE, 1 );
 155
 156     TypeSerializer aSerializer(rOStm);
 157
 158     rOStm.WriteUInt16( static_cast<sal_uInt16>(rMapMode.mpImplMapMode->meUnit) );
 159     aSerializer.writePoint(rMapMode.mpImplMapMode->maOrigin);
 160     WriteFraction( rOStm, rMapMode.mpImplMapMode->maScaleX );
 161     WriteFraction( rOStm, rMapMode.mpImplMapMode->maScaleY );
 162     rOStm.WriteBool( rMapMode.mpImplMapMode->mbSimple );
 163
 164     return rOStm;
 165 }
 166
 167
 168 MapUnit MapMode::GetMapUnit() const { return mpImplMapMode->meUnit; }
 169
 170 const Point& MapMode::GetOrigin() const { return mpImplMapMode->maOrigin; }
 171
 172 const Fraction& MapMode::GetScaleX() const { return mpImplMapMode->maScaleX; }
 173
 174 const Fraction& MapMode::GetScaleY() const { return mpImplMapMode->maScaleY; }
 175
 176 bool MapMode::IsSimple() const { return mpImplMapMode->mbSimple; }
 177
 178 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */