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 #include <comphelper/lok.hxx>
  27 #include <sfx2/lokcomponenthelpers.hxx>
  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     SmViewShell* pSmView = dynamic_cast<SmViewShell*>(pView);
  37     if (!pSmView && comphelper::LibreOfficeKit::isActive())
  38     {
  39         auto* pWindow = static_cast<SmGraphicWindow*>(LokStarMathHelper(pView).GetGraphicWindow());
  40         if (pWindow)
  41             pSmView = &pWindow->GetGraphicWidget().GetView();
  42     }
  43     return pSmView;
  44 }
  45
  46
  47 /**************************************************************************/
  48
  49 void SmFontPickList::Clear()
  50 {
  51     aFontVec.clear();
  52 }
  53
  54 SmFontPickList& SmFontPickList::operator = (const SmFontPickList& rList)
  55 {
  56     Clear();
  57     nMaxItems = rList.nMaxItems;
  58     aFontVec = rList.aFontVec;
  59
  60     return *this;
  61 }
  62
  63 vcl::Font SmFontPickList::Get(sal_uInt16 nPos) const
  64 {
  65     return nPos < aFontVec.size() ? aFontVec[nPos] : vcl::Font();
  66 }
  67
  68 namespace {
  69
  70 bool lcl_CompareItem(const vcl::Font & rFirstFont, const vcl::Font & rSecondFont)
  71 {
  72   return rFirstFont.GetFamilyName() == rSecondFont.GetFamilyName() &&
  73          rFirstFont.GetFamilyType() == rSecondFont.GetFamilyType() &&
  74          rFirstFont.GetCharSet()    == rSecondFont.GetCharSet()    &&
  75          rFirstFont.GetWeight()     == rSecondFont.GetWeight()     &&
  76          rFirstFont.GetItalic()     == rSecondFont.GetItalic();
  77 }
  78
  79 OUString lcl_GetStringItem(const vcl::Font &rFont)
  80 {
  81     OUStringBuffer aString(rFont.GetFamilyName());
  82
  83     if (IsItalic( rFont ))
  84     {
  85         aString.append(", ");
  86         aString.append(SmResId(RID_FONTITALIC));
  87     }
  88     if (IsBold( rFont ))
  89     {
  90         aString.append(", ");
  91         aString.append(SmResId(RID_FONTBOLD));
  92     }
  93
  94     return aString.makeStringAndClear();
  95 }
  96
  97 }
  98
  99 void SmFontPickList::Insert(const vcl::Font &rFont)
 100 {
 101     for (size_t nPos = 0; nPos < aFontVec.size(); nPos++)
 102         if (lcl_CompareItem( aFontVec[nPos], rFont))
 103         {
 104             aFontVec.erase( aFontVec.begin() + nPos );
 105             break;
 106         }
 107
 108     aFontVec.push_front( rFont );
 109
 110     if (aFontVec.size() > nMaxItems)
 111     {
 112         aFontVec.pop_back();
 113     }
 114 }
 115
 116 void SmFontPickList::ReadFrom(const SmFontDialog& rDialog)
 117 {
 118     Insert(rDialog.GetFont());
 119 }
 120
 121 void SmFontPickList::WriteTo(SmFontDialog& rDialog) const
 122 {
 123     rDialog.SetFont(Get());
 124 }
 125
 126
 127 /**************************************************************************/
 128
 129 SmFontPickListBox::SmFontPickListBox(std::unique_ptr<weld::ComboBox> pWidget)
 130     : SmFontPickList(4)
 131     , m_xWidget(std::move(pWidget))
 132 {
 133     m_xWidget->connect_changed(LINK(this, SmFontPickListBox, SelectHdl));
 134 }
 135
 136 IMPL_LINK_NOARG(SmFontPickListBox, SelectHdl, weld::ComboBox&, void)
 137 {
 138     const int nPos = m_xWidget->get_active();
 139     if (nPos != 0)
 140     {
 141         SmFontPickList::Insert(Get(nPos));
 142         OUString aString = m_xWidget->get_text(nPos);
 143         m_xWidget->remove(nPos);
 144         m_xWidget->insert_text(0, aString);
 145     }
 146
 147     m_xWidget->set_active(0);
 148 }
 149
 150 SmFontPickListBox& SmFontPickListBox::operator=(const SmFontPickList& rList)
 151 {
 152     *static_cast<SmFontPickList *>(this) = rList;
 153
 154     for (decltype(aFontVec)::size_type nPos = 0; nPos < aFontVec.size(); nPos++)
 155         m_xWidget->insert_text(nPos, lcl_GetStringItem(aFontVec[nPos]));
 156
 157     if (!aFontVec.empty())
 158         m_xWidget->set_active_text(lcl_GetStringItem(aFontVec.front()));
 159
 160     return *this;
 161 }
 162
 163 void SmFontPickListBox::Insert(const vcl::Font &rFont)
 164 {
 165     SmFontPickList::Insert(rFont);
 166
 167     OUString aEntry(lcl_GetStringItem(aFontVec.front()));
 168     int nPos = m_xWidget->find_text(aEntry);
 169     if (nPos != -1)
 170         m_xWidget->remove(nPos);
 171     m_xWidget->insert_text(0, aEntry);
 172     m_xWidget->set_active(0);
 173
 174     while (m_xWidget->get_count() > nMaxItems)
 175         m_xWidget->remove(m_xWidget->get_count() - 1);
 176 }
 177
 178 bool IsItalic( const vcl::Font &rFont )
 179 {
 180     FontItalic eItalic = rFont.GetItalic();
 181     // the code below leaves only _NONE and _DONTKNOW as not italic
 182     return eItalic == ITALIC_OBLIQUE  ||  eItalic == ITALIC_NORMAL;
 183 }
 184
 185
 186 bool IsBold( const vcl::Font &rFont )
 187 {
 188     FontWeight eWeight = rFont.GetWeight();
 189     return eWeight > WEIGHT_NORMAL;
 190 }
 191
 192
 193 void SmFace::Impl_Init()
 194 {
 195     SetSize( GetFontSize() );
 196     SetTransparent( true );
 197     SetAlignment( ALIGN_BASELINE );
 198     SetColor( COL_AUTO );
 199 }
 200
 201 void SmFace::SetSize(const Size& rSize)
 202 {
 203     Size  aSize (rSize);
 204
 205     // check the requested size against minimum value
 206     const int nMinVal = o3tl::convert(2, o3tl::Length::pt, SmO3tlLengthUnit());
 207
 208     if (aSize.Height() < nMinVal)
 209         aSize.setHeight( nMinVal );
 210
 211     //! we don't force a maximum value here because this may prevent eg the
 212     //! parentheses in "left ( ... right )" from matching up with large
 213     //! bodies (eg stack{...} with many entries).
 214     //! Of course this is holds only if characters are used and not polygons.
 215
 216     Font::SetFontSize(aSize);
 217 }
 218
 219
 220 tools::Long SmFace::GetBorderWidth() const
 221 {
 222     if (nBorderWidth < 0)
 223         return GetDefaultBorderWidth();
 224     else
 225         return nBorderWidth;
 226 }
 227
 228 SmFace & SmFace::operator = (const SmFace &rFace)
 229 {
 230     Font::operator = (rFace);
 231     nBorderWidth = -1;
 232     return *this;
 233 }
 234
 235
 236 SmFace & operator *= (SmFace &rFace, const Fraction &rFrac)
 237     // scales the width and height of 'rFace' by 'rFrac' and returns a
 238     // reference to 'rFace'.
 239     // It's main use is to make scaling fonts look easier.
 240 {   const Size &rFaceSize = rFace.GetFontSize();
 241
 242     rFace.SetSize(Size(tools::Long(rFaceSize.Width() * rFrac),
 243                        tools::Long(rFaceSize.Height() * rFrac)));
 244     return rFace;
 245 }
 246
 247 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */