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/.
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   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 Fraction Sm100th_mmToPts(long nNum100th_mm)
  48     // returns the length (in points) that corresponds to the length
  49     // 'nNum100th_mm' (in 100th of mm).
  50 {
  51     SAL_WARN_IF( nNum100th_mm < 0, "starmath", "Ooops..." );
  52     Fraction  aTmp (7227L, 254000L);
  53     return aTmp *= Fraction(nNum100th_mm);
  54 }
  55
  56
  57 inline long SmRoundFraction(const Fraction &rFrac)
  58 {
  59     SAL_WARN_IF( rFrac <= Fraction(), "starmath", "Ooops..." );
  60     return (rFrac.GetNumerator() + rFrac.GetDenominator() / 2) / rFrac.GetDenominator();
  61 }
  62
  63
  64 class SmViewShell;
  65 SmViewShell * SmGetActiveView();
  66
  67
  68 // SmFace
  69
  70
  71 bool    IsItalic( const vcl::Font &rFont );
  72 bool    IsBold( const vcl::Font &rFont );
  73
  74 class SmFace : public vcl::Font
  75 {
  76     long    nBorderWidth;
  77
  78     void    Impl_Init();
  79
  80 public:
  81     SmFace() :
  82         Font(), nBorderWidth(-1) { Impl_Init(); }
  83     SmFace(const Font& rFont) :
  84         Font(rFont), nBorderWidth(-1) { Impl_Init(); }
  85     SmFace(const OUString& rName, const Size& rSize) :
  86         Font(rName, rSize), nBorderWidth(-1) { Impl_Init(); }
  87
  88     SmFace(const SmFace &rFace) :
  89         Font(rFace), nBorderWidth(-1) { Impl_Init(); }
  90
  91     // overloaded version in order to supply a min value
  92     // for font size (height). (Also used in ctor's to do so.)
  93     void    SetSize(const Size& rSize);
  94
  95     void    SetBorderWidth(long nWidth)     { nBorderWidth = nWidth; }
  96     long    GetBorderWidth() const;
  97     long    GetDefaultBorderWidth() const   { return GetFontSize().Height() / 20 ; }
  98     void    FreezeBorderWidth()     { nBorderWidth = GetDefaultBorderWidth(); }
  99
 100     SmFace & operator = (const SmFace &rFace);
 101 };
 102
 103 SmFace & operator *= (SmFace &rFace, const Fraction &rFrac);
 104
 105
 106 // SmFontPickList
 107
 108
 109 class SmFontDialog;
 110
 111 class SmFontPickList
 112 {
 113 protected:
 114     sal_uInt16 nMaxItems;
 115     std::deque<vcl::Font> aFontVec;
 116
 117 public:
 118     explicit SmFontPickList(sal_uInt16 nMax = 5) : nMaxItems(nMax) {}
 119     virtual ~SmFontPickList() { Clear(); }
 120
 121     virtual void    Insert(const vcl::Font &rFont);
 122
 123     void            Clear();
 124     vcl::Font       Get(sal_uInt16 nPos = 0) const;
 125
 126     SmFontPickList& operator = (const SmFontPickList& rList);
 127
 128     void            ReadFrom(const SmFontDialog& rDialog);
 129     void            WriteTo(SmFontDialog& rDialog) const;
 130 };
 131
 132
 133 //  SmFontPickListBox
 134
 135
 136 class SmFontPickListBox final : public SmFontPickList, public ListBox
 137 {
 138     DECL_LINK(SelectHdl, ListBox&, void);
 139
 140 public:
 141     SmFontPickListBox(vcl::Window* pParent, WinBits nBits);
 142
 143     SmFontPickListBox& operator = (const SmFontPickList& rList);
 144
 145     virtual void    Insert(const vcl::Font &rFont) override;
 146     using   Window::Update;
 147 };
 148
 149 #endif
 150
 151 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */