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