sw/source/uibase/frmdlg/colmgr.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 <sal/config.h>
  21
  22 #include <algorithm>
  23
  24 #include <hintids.hxx>
  25 #include <editeng/lrspitem.hxx>
  26 #include <osl/diagnose.h>
  27
  28 #include <colmgr.hxx>
  29 #include <fmtfsize.hxx>
  30 #include <swtypes.hxx>
  31
  32 // private methods
  33
  34 // set column width to current width
  35 void FitToActualSize(SwFormatCol& rCol, sal_uInt16 nWidth)
  36 {
  37     const sal_uInt16 nCount = rCol.GetColumns().size();
  38     for (sal_uInt16 i = 0; i < nCount; ++i)
  39     {
  40         const sal_uInt16 nTmp = rCol.CalcColWidth(i, nWidth);
  41         auto& col = rCol.GetColumns()[i];
  42         col.SetWishWidth(nTmp);
  43         // If necessary, shrink borders (as equally as possible) to keep up the invariant that
  44         // GetWishWidth() >= GetLeft() + GetRight():
  45         sal_uInt32 const borders = col.GetLeft() + col.GetRight();
  46         if (borders > nTmp)
  47         {
  48             auto const shrink = borders - nTmp;
  49             auto const half = shrink / 2; // rounds down
  50             if (col.GetLeft() < col.GetRight())
  51             {
  52                 auto const shrinkLeft = std::min(sal_uInt32(col.GetLeft()), half);
  53                 col.SetLeft(col.GetLeft() - shrinkLeft);
  54                 col.SetRight(col.GetRight() - (shrink - shrinkLeft));
  55             }
  56             else
  57             {
  58                 auto const shrinkRight = std::min(sal_uInt32(col.GetRight()), half);
  59                 col.SetLeft(col.GetLeft() - (shrink - shrinkRight));
  60                 col.SetRight(col.GetRight() - shrinkRight);
  61             }
  62         }
  63     }
  64     rCol.SetWishWidth(nWidth);
  65 }
  66
  67 // public methods
  68
  69 // set column quantity and Gutterwidth
  70 void SwColMgr::SetCount(sal_uInt16 nCount, sal_uInt16 nGutterWidth)
  71 {
  72     m_aFormatCol.Init(nCount, nGutterWidth, m_nWidth);
  73     m_aFormatCol.SetWishWidth(m_nWidth);
  74     m_aFormatCol.SetGutterWidth(nGutterWidth, m_nWidth);
  75 }
  76
  77 sal_uInt16 SwColMgr::GetGutterWidth(sal_uInt16 nPos) const
  78 {
  79     sal_uInt16 nRet;
  80     if (nPos == USHRT_MAX)
  81         nRet = GetCount() > 1 ? m_aFormatCol.GetGutterWidth() : DEF_GUTTER_WIDTH;
  82     else
  83     {
  84         OSL_ENSURE(nPos < GetCount() - 1, "column overindexed");
  85         const SwColumns& rCols = m_aFormatCol.GetColumns();
  86         nRet = rCols[nPos].GetRight() + rCols[nPos + 1].GetLeft();
  87     }
  88     return nRet;
  89 }
  90
  91 void SwColMgr::SetGutterWidth(sal_uInt16 nGutterWidth, sal_uInt16 nPos)
  92 {
  93     if (nPos == USHRT_MAX)
  94         m_aFormatCol.SetGutterWidth(nGutterWidth, m_nWidth);
  95     else
  96     {
  97         OSL_ENSURE(nPos < GetCount() - 1, "column overindexed");
  98         SwColumns& rCols = m_aFormatCol.GetColumns();
  99         sal_uInt16 nGutterWidth2 = nGutterWidth / 2;
 100         rCols[nPos].SetRight(nGutterWidth2);
 101         rCols[nPos + 1].SetLeft(nGutterWidth2);
 102     }
 103 }
 104
 105 // height separation line
 106 short SwColMgr::GetLineHeightPercent() const
 107 {
 108     return static_cast<short>(m_aFormatCol.GetLineHeight());
 109 }
 110 void SwColMgr::SetLineHeightPercent(short nPercent)
 111 {
 112     OSL_ENSURE(nPercent <= 100, "line height may be at most 100%");
 113     m_aFormatCol.SetLineHeight(static_cast<sal_uInt8>(nPercent));
 114 }
 115
 116 // column width
 117 sal_uInt16 SwColMgr::GetColWidth(sal_uInt16 nIdx) const
 118 {
 119     OSL_ENSURE(nIdx < GetCount(), "Column array overindexed.");
 120     return m_aFormatCol.CalcPrtColWidth(nIdx, m_nWidth);
 121 }
 122
 123 void SwColMgr::SetColWidth(sal_uInt16 nIdx, sal_uInt16 nWd)
 124 {
 125     OSL_ENSURE(nIdx < GetCount(), "Column array overindexed.");
 126     m_aFormatCol.GetColumns()[nIdx].SetWishWidth(nWd);
 127 }
 128
 129 // newly set size
 130 void SwColMgr::SetActualWidth(sal_uInt16 nW)
 131 {
 132     m_nWidth = nW;
 133     ::FitToActualSize(m_aFormatCol, nW);
 134 }
 135
 136 // ctor
 137 SwColMgr::SwColMgr(const SfxItemSet& rSet)
 138     : m_aFormatCol(rSet.Get(RES_COL))
 139 {
 140     m_nWidth = o3tl::narrowing<sal_uInt16>(rSet.Get(RES_FRM_SIZE).GetWidth());
 141     if (m_nWidth < MINLAY)
 142         m_nWidth = USHRT_MAX;
 143     const SvxLRSpaceItem& rLR = rSet.Get(RES_LR_SPACE);
 144     m_nWidth = m_nWidth - o3tl::narrowing<sal_uInt16>(rLR.GetLeft());
 145     m_nWidth = m_nWidth - o3tl::narrowing<sal_uInt16>(rLR.GetRight());
 146     ::FitToActualSize(m_aFormatCol, m_nWidth);
 147 }
 148
 149 SwColMgr::~SwColMgr() {}
 150
 151 void SwColMgr::SetLineWidthAndColor(SvxBorderLineStyle eStyle, sal_uLong nLWidth, const Color& rCol)
 152 {
 153     m_aFormatCol.SetLineStyle(eStyle);
 154     m_aFormatCol.SetLineWidth(nLWidth);
 155     m_aFormatCol.SetLineColor(rCol);
 156 }
 157
 158 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */