starmath/inc/utility.hxx

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
   2 /*
   3  * This file is part of the LibreOffice project.
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   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 #ifndef INCLUDED_STARMATH_INC_UTILITY_HXX
  20 #define INCLUDED_STARMATH_INC_UTILITY_HXX
  21
  22 #include <sal/config.h>
  23
  24 #include <sal/log.hxx>
  25 #include <vcl/font.hxx>
  26 #include <vcl/fixed.hxx>
  27 #include <vcl/combobox.hxx>
  28 #include <vcl/lstbox.hxx>
  29 #include <tools/fract.hxx>
  30 #include <deque>
  31
  32
  33 inline long SmPtsTo100th_mm(long nNumPts)
  34     // returns the length (in 100th of mm) that corresponds to the length
  35     // 'nNumPts' (in units points).
  36     // 72.27 [pt] = 1 [inch] = 2,54 [cm] = 2540 [100th of mm].
  37     // result is being rounded to the nearest integer.
  38 {
  39     SAL_WARN_IF( nNumPts < 0, "starmath", "Ooops..." );
  40     // broken into multiple and fraction of 'nNumPts' to reduce chance
  41     // of overflow
  42     // (7227 / 2) is added in order to round to the nearest integer
  43     return 35 * nNumPts + (nNumPts * 1055L + (7227 / 2)) / 7227L;
  44 }
  45
  46
  47 inline long SmPtsTo100th_mm(const Fraction &rNumPts)
  48     // as above but with argument 'rNumPts' as 'Fraction'
  49 {
  50     Fraction  aTmp (254000L, 7227L);
  51     return aTmp *= rNumPts;
  52 }
  53
  54
  55 inline Fraction Sm100th_mmToPts(long nNum100th_mm)
  56     // returns the length (in points) that corresponds to the length
  57     // 'nNum100th_mm' (in 100th of mm).
  58 {
  59     SAL_WARN_IF( nNum100th_mm < 0, "starmath", "Ooops..." );
  60     Fraction  aTmp (7227L, 254000L);
  61     return aTmp *= Fraction(nNum100th_mm);
  62 }
  63
  64
  65 inline long SmRoundFraction(const Fraction &rFrac)
  66 {
  67     SAL_WARN_IF( rFrac <= Fraction(), "starmath", "Ooops..." );
  68     return (rFrac.GetNumerator() + rFrac.GetDenominator() / 2) / rFrac.GetDenominator();
  69 }
  70
  71
  72 class SmViewShell;
  73 SmViewShell * SmGetActiveView();
  74
  75
  76
  77
  78 // SmFace
  79
  80
  81 bool    IsItalic( const vcl::Font &rFont );
  82 bool    IsBold( const vcl::Font &rFont );
  83
  84 class SmFace : public vcl::Font
  85 {
  86     long    nBorderWidth;
  87
  88     void    Impl_Init();
  89
  90 public:
  91     SmFace() :
  92         Font(), nBorderWidth(-1) { Impl_Init(); }
  93     SmFace(const Font& rFont) :
  94         Font(rFont), nBorderWidth(-1) { Impl_Init(); }
  95     SmFace(const OUString& rName, const Size& rSize) :
  96         Font(rName, rSize), nBorderWidth(-1) { Impl_Init(); }
  97     SmFace( FontFamily eFamily, const Size& rSize) :
  98         Font(eFamily, rSize), nBorderWidth(-1) { Impl_Init(); }
  99
 100     SmFace(const SmFace &rFace) :
 101         Font(rFace), nBorderWidth(-1) { Impl_Init(); }
 102
 103     // overloaded version in order to supply a min value
 104     // for font size (height). (Also used in ctor's to do so.)
 105     void    SetSize(const Size& rSize);
 106
 107     void    SetBorderWidth(long nWidth)     { nBorderWidth = nWidth; }
 108     long    GetBorderWidth() const;
 109     long    GetDefaultBorderWidth() const   { return GetSize().Height() / 20 ; }
 110     void    FreezeBorderWidth()     { nBorderWidth = GetDefaultBorderWidth(); }
 111
 112     SmFace & operator = (const SmFace &rFace);
 113 };
 114
 115 SmFace & operator *= (SmFace &rFace, const Fraction &rFrac);
 116
 117
 118
 119
 120 // SmFontPickList
 121
 122
 123 class SmFontDialog;
 124
 125 class SmFontPickList
 126 {
 127 protected:
 128     sal_uInt16 nMaxItems;
 129     std::deque<vcl::Font> aFontVec;
 130
 131     static bool     CompareItem(const vcl::Font & rFirstFont, const vcl::Font & rSecondFont);
 132     static OUString GetStringItem(const vcl::Font &rItem);
 133
 134 public:
 135     SmFontPickList(sal_uInt16 nMax = 5) : nMaxItems(nMax) {}
 136     virtual ~SmFontPickList() { Clear(); }
 137
 138     virtual void    Insert(const vcl::Font &rFont);
 139     virtual void    Update(const vcl::Font &rFont, const vcl::Font &rNewFont);
 140     virtual void    Remove(const vcl::Font &rFont);
 141
 142     void            Clear();
 143     vcl::Font       Get(sal_uInt16 nPos = 0) const;
 144
 145     SmFontPickList& operator = (const SmFontPickList& rList);
 146     vcl::Font       operator [] (sal_uInt16 nPos) const;
 147
 148     void            ReadFrom(const SmFontDialog& rDialog);
 149     void            WriteTo(SmFontDialog& rDialog) const;
 150 };
 151
 152
 153
 154 //  SmFontPickListBox
 155
 156
 157 class SmFontPickListBox : public SmFontPickList, public ListBox
 158 {
 159 protected:
 160     DECL_LINK(SelectHdl, ListBox *);
 161
 162 public:
 163     SmFontPickListBox(vcl::Window* pParent, WinBits nBits);
 164
 165     SmFontPickListBox& operator = (const SmFontPickList& rList);
 166
 167     virtual void    Insert(const vcl::Font &rFont) SAL_OVERRIDE;
 168     using   Window::Update;
 169     virtual void    Update(const vcl::Font &rFont, const vcl::Font &rNewFont) SAL_OVERRIDE;
 170     virtual void    Remove(const vcl::Font &rFont) SAL_OVERRIDE;
 171 };
 172
 173 #endif
 174
 175 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */