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