starmath/source/utility.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/builderfactory.hxx>
  21
  22 #include "starmath.hrc"
  23
  24 #include "utility.hxx"
  25 #include "dialog.hxx"
  26 #include "view.hxx"
  27
  28
  29 // return pointer to active SmViewShell, if this is not possible
  30 // return 0 instead.
  31 //!! Since this method is based on the current focus it is somewhat
  32 //!! unreliable and may return unexpected 0 pointers!
  33 SmViewShell * SmGetActiveView()
  34 {
  35     SfxViewShell *pView = SfxViewShell::Current();
  36     return  dynamic_cast<SmViewShell*>( pView);
  37 }
  38
  39
  40 /**************************************************************************/
  41
  42 void SmFontPickList::Clear()
  43 {
  44     aFontVec.clear();
  45 }
  46
  47 SmFontPickList& SmFontPickList::operator = (const SmFontPickList& rList)
  48 {
  49     Clear();
  50     nMaxItems = rList.nMaxItems;
  51     for (const auto & nPos : rList.aFontVec)
  52         aFontVec.push_back( nPos );
  53
  54     return *this;
  55 }
  56
  57 vcl::Font SmFontPickList::Get(sal_uInt16 nPos) const
  58 {
  59     return nPos < aFontVec.size() ? aFontVec[nPos] : vcl::Font();
  60 }
  61
  62 bool SmFontPickList::CompareItem(const vcl::Font & rFirstFont, const vcl::Font & rSecondFont)
  63 {
  64   return rFirstFont.GetFamilyName() == rSecondFont.GetFamilyName() &&
  65          rFirstFont.GetFamilyType() == rSecondFont.GetFamilyType() &&
  66          rFirstFont.GetCharSet()    == rSecondFont.GetCharSet()    &&
  67          rFirstFont.GetWeight()     == rSecondFont.GetWeight()     &&
  68          rFirstFont.GetItalic()     == rSecondFont.GetItalic();
  69 }
  70
  71 OUString SmFontPickList::GetStringItem(const vcl::Font &rFont)
  72 {
  73     OUStringBuffer aString(rFont.GetFamilyName());
  74
  75     if (IsItalic( rFont ))
  76     {
  77         aString.append(", ");
  78         aString.append(SM_RESSTR(RID_FONTITALIC));
  79     }
  80     if (IsBold( rFont ))
  81     {
  82         aString.append(", ");
  83         aString.append(SM_RESSTR(RID_FONTBOLD));
  84     }
  85
  86     return aString.makeStringAndClear();
  87 }
  88
  89 void SmFontPickList::Insert(const vcl::Font &rFont)
  90 {
  91     for (size_t nPos = 0; nPos < aFontVec.size(); nPos++)
  92         if (CompareItem( aFontVec[nPos], rFont))
  93         {
  94             aFontVec.erase( aFontVec.begin() + nPos );
  95             break;
  96         }
  97
  98     aFontVec.push_front( rFont );
  99
 100     if (aFontVec.size() > nMaxItems)
 101     {
 102         aFontVec.pop_back();
 103     }
 104 }
 105
 106 void SmFontPickList::ReadFrom(const SmFontDialog& rDialog)
 107 {
 108     Insert(rDialog.GetFont());
 109 }
 110
 111 void SmFontPickList::WriteTo(SmFontDialog& rDialog) const
 112 {
 113     rDialog.SetFont(Get());
 114 }
 115
 116
 117 /**************************************************************************/
 118
 119 VCL_BUILDER_FACTORY_ARGS(SmFontPickListBox, WB_DROPDOWN)
 120
 121 SmFontPickListBox::SmFontPickListBox (vcl::Window* pParent, WinBits nBits) :
 122     SmFontPickList(4),
 123     ListBox(pParent, nBits)
 124 {
 125     SetSelectHdl(LINK(this, SmFontPickListBox, SelectHdl));
 126 }
 127
 128 IMPL_LINK_NOARG( SmFontPickListBox, SelectHdl, ListBox&, void )
 129 {
 130     OUString aString;
 131
 132     const sal_Int32 nPos = GetSelectEntryPos();
 133
 134     if (nPos != 0)
 135     {
 136         SmFontPickList::Insert(Get(nPos));
 137         aString = GetEntry(nPos);
 138         RemoveEntry(nPos);
 139         InsertEntry(aString, 0);
 140     }
 141
 142     SelectEntryPos(0);
 143 }
 144
 145 SmFontPickListBox& SmFontPickListBox::operator=(const SmFontPickList& rList)
 146 {
 147     sal_uInt16 nPos;
 148
 149     *static_cast<SmFontPickList *>(this) = rList;
 150
 151     for (nPos = 0; nPos < aFontVec.size(); nPos++)
 152         InsertEntry(GetStringItem(aFontVec[nPos]), nPos);
 153
 154     if (aFontVec.size() > 0)
 155         SelectEntry(GetStringItem(aFontVec.front()));
 156
 157     return *this;
 158 }
 159
 160 void SmFontPickListBox::Insert(const vcl::Font &rFont)
 161 {
 162     SmFontPickList::Insert(rFont);
 163
 164     RemoveEntry(GetStringItem(aFontVec.front()));
 165     InsertEntry(GetStringItem(aFontVec.front()), 0);
 166     SelectEntry(GetStringItem(aFontVec.front()));
 167
 168     while (GetEntryCount() > nMaxItems)
 169         RemoveEntry(GetEntryCount() - 1);
 170
 171     return;
 172 }
 173
 174
 175 bool IsItalic( const vcl::Font &rFont )
 176 {
 177     FontItalic eItalic = rFont.GetItalic();
 178     // the code below leaves only _NONE and _DONTKNOW as not italic
 179     return eItalic == ITALIC_OBLIQUE  ||  eItalic == ITALIC_NORMAL;
 180 }
 181
 182
 183 bool IsBold( const vcl::Font &rFont )
 184 {
 185     FontWeight eWeight = rFont.GetWeight();
 186     return eWeight != WEIGHT_DONTKNOW && eWeight > WEIGHT_NORMAL;
 187 }
 188
 189
 190 void SmFace::Impl_Init()
 191 {
 192     SetSize( GetFontSize() );
 193     SetTransparent( true );
 194     SetAlignment( ALIGN_BASELINE );
 195     SetColor( COL_AUTO );
 196 }
 197
 198 void SmFace::SetSize(const Size& rSize)
 199 {
 200     Size  aSize (rSize);
 201
 202     // check the requested size against minimum value
 203     static int const    nMinVal = SmPtsTo100th_mm(2);
 204
 205     if (aSize.Height() < nMinVal)
 206         aSize.Height() = nMinVal;
 207
 208     //! we don't force a maximum value here because this may prevent eg the
 209     //! parentheses in "left ( ... right )" from matching up with large
 210     //! bodies (eg stack{...} with many entries).
 211     //! Of course this is holds only if characters are used and not polygons.
 212
 213     Font::SetFontSize(aSize);
 214 }
 215
 216
 217 long SmFace::GetBorderWidth() const
 218 {
 219     if (nBorderWidth < 0)
 220         return GetDefaultBorderWidth();
 221     else
 222         return nBorderWidth;
 223 }
 224
 225 SmFace & SmFace::operator = (const SmFace &rFace)
 226 {
 227     Font::operator = (rFace);
 228     nBorderWidth = -1;
 229     return *this;
 230 }
 231
 232
 233 SmFace & operator *= (SmFace &rFace, const Fraction &rFrac)
 234     // scales the width and height of 'rFace' by 'rFrac' and returns a
 235     // reference to 'rFace'.
 236     // It's main use is to make scaling fonts look easier.
 237 {   const Size &rFaceSize = rFace.GetFontSize();
 238
 239     rFace.SetSize(Size(Fraction(rFaceSize.Width())  *= rFrac,
 240                        Fraction(rFaceSize.Height()) *= rFrac));
 241     return rFace;
 242 }
 243
 244
 245 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */