starmath/source/smediteng.cxx

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4; fill-column: 100 -*- */
   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 #include <smediteng.hxx>
  10 #include <smmod.hxx>
  11 #include <cfgitem.hxx>
  12
  13 #include <vcl/settings.hxx>
  14 #include <editeng/editview.hxx>
  15 #include <editeng/eeitem.hxx>
  16 #include <editeng/fhgtitem.hxx>
  17 #include <editeng/fontitem.hxx>
  18 #include <svl/itempool.hxx>
  19 #include <svl/itemset.hxx>
  20 #include <vcl/outdev.hxx>
  21 #include <vcl/svapp.hxx>
  22
  23 SmEditEngine::SmEditEngine(SfxItemPool* pItemPool)
  24     : EditEngine(pItemPool)
  25     , m_nOldZoom(100)
  26     , m_nNewZoom(100)
  27     , m_nDefaultFontSize(0)
  28     , m_aAllSelection(0, 0, 0, 0)
  29 {
  30     SetText(u"");
  31
  32     // Add external text leading
  33     SetAddExtLeading(true);
  34
  35     // Allow to undo changes ( Ctrl + z )
  36     EnableUndo(true);
  37
  38     // Length in pixel of a tabulation
  39     SetDefTab(sal_uInt16(Application::GetDefaultDevice()->GetTextWidth("XXXX")));
  40
  41     // Set default background color by theme
  42     SetBackgroundColor(
  43         Application::GetDefaultDevice()->GetSettings().GetStyleSettings().GetFieldColor());
  44
  45     // Control words
  46     SetControlWord((GetControlWord() | EEControlBits::AUTOINDENTING)
  47                    & EEControlBits(~EEControlBits::UNDOATTRIBS)
  48                    & EEControlBits(~EEControlBits::PASTESPECIAL));
  49
  50     // Word delimiters for auto word selection by double click
  51     SetWordDelimiters(" .=+-*/(){}[];\"");
  52
  53     // Default mapping mode
  54     SetRefMapMode(MapMode(MapUnit::MapPixel));
  55
  56     // Default size of the box
  57     SetPaperSize(Size(1000, 0));
  58 }
  59
  60 bool SmEditEngine::checkZoom()
  61 {
  62     return m_nOldZoom != (m_nNewZoom = SM_MOD()->GetConfig()->GetSmEditWindowZoomFactor());
  63 }
  64
  65 void SmEditEngine::executeZoom(EditView* pEditView)
  66 {
  67     if (checkZoom())
  68     {
  69         updateZoom();
  70         if (pEditView)
  71         {
  72             FormatAndLayout(pEditView);
  73             pEditView->SetSelection(pEditView->GetSelection());
  74         }
  75     }
  76 }
  77
  78 void SmEditEngine::updateZoom()
  79 {
  80     // In first run get font size as base to scale
  81     if (m_nDefaultFontSize == 0)
  82     {
  83         SfxItemSet sfxatts = GetAttribs(0, 0, 0, GetAttribsFlags::CHARATTRIBS);
  84         const SvxFontHeightItem* sfxattsh = sfxatts.GetItem(EE_CHAR_FONTHEIGHT);
  85         m_nDefaultFontSize = sfxattsh->GetHeight();
  86     }
  87
  88     // Now we calculate the new font size
  89     sal_Int32 nNewFontSize = m_nDefaultFontSize * m_nNewZoom / 100;
  90
  91     // We apply the new font size to all the text
  92     updateAllESelection(); // Update length of the text
  93     SfxItemSet aSet = GetEmptyItemSet();
  94     aSet.Put(SvxFontHeightItem(nNewFontSize, 100, EE_CHAR_FONTHEIGHT));
  95     QuickSetAttribs(aSet, m_aAllSelection);
  96
  97     // We don't forget to equalize the zoomvalues
  98     m_nOldZoom = m_nNewZoom;
  99 }
 100
 101 void SmEditEngine::updateAllESelection()
 102 {
 103     sal_Int32 paracount = GetParagraphCount();
 104     m_aAllSelection.nEndPara = paracount > 0 ? paracount - 1 : 0;
 105     sal_Int32 textlength = GetTextLen(m_aAllSelection.nEndPara);
 106     m_aAllSelection.nEndPos = textlength > 0 ? textlength : 0;
 107 }
 108
 109 void SmEditEngine::setSmItemPool(SfxItemPool* mpItemPool, const SvtLinguOptions& maLangOptions)
 110 {
 111     // Set fonts to be used
 112     struct FontData
 113     {
 114         LanguageType nFallbackLang;
 115         LanguageType nLang;
 116         DefaultFontType nFontType;
 117         sal_uInt16 nFontInfoId;
 118     };
 119
 120     FontData aFontDataTable[3]
 121         = { // info to get western font to be used
 122             { LANGUAGE_ENGLISH_US, maLangOptions.nDefaultLanguage, DefaultFontType::FIXED,
 123               EE_CHAR_FONTINFO },
 124             // info to get CJK font to be used
 125             { LANGUAGE_JAPANESE, maLangOptions.nDefaultLanguage_CJK, DefaultFontType::CJK_TEXT,
 126               EE_CHAR_FONTINFO_CJK },
 127             // info to get CTL font to be used
 128             { LANGUAGE_ARABIC_SAUDI_ARABIA, maLangOptions.nDefaultLanguage_CTL,
 129               DefaultFontType::CTL_TEXT, EE_CHAR_FONTINFO_CTL }
 130           };
 131
 132     // Text color
 133     auto aDefaultDevice = Application::GetDefaultDevice();
 134     Color aTextColor = aDefaultDevice->GetSettings().GetStyleSettings().GetFieldTextColor();
 135     for (const FontData& aFontData : aFontDataTable)
 136     {
 137         LanguageType nLang
 138             = (LANGUAGE_NONE == aFontData.nLang) ? aFontData.nFallbackLang : aFontData.nLang;
 139         vcl::Font aFont = OutputDevice::GetDefaultFont(aFontData.nFontType, nLang,
 140                                                        GetDefaultFontFlags::OnlyOne);
 141         aFont.SetColor(aTextColor);
 142         mpItemPool->SetPoolDefaultItem(SvxFontItem(aFont.GetFamilyType(), aFont.GetFamilyName(),
 143                                                    aFont.GetStyleName(), aFont.GetPitch(),
 144                                                    aFont.GetCharSet(), aFontData.nFontInfoId));
 145     }
 146
 147     // Set font heights
 148     SvxFontHeightItem aFontHeight(
 149         aDefaultDevice->LogicToPixel(Size(0, 11), MapMode(MapUnit::MapPoint)).Height(), 100,
 150         EE_CHAR_FONTHEIGHT);
 151     mpItemPool->SetPoolDefaultItem(aFontHeight);
 152     aFontHeight.SetWhich(EE_CHAR_FONTHEIGHT_CJK);
 153     mpItemPool->SetPoolDefaultItem(aFontHeight);
 154     aFontHeight.SetWhich(EE_CHAR_FONTHEIGHT_CTL);
 155     mpItemPool->SetPoolDefaultItem(aFontHeight);
 156 }
 157
 158 /* vim:set shiftwidth=4 softtabstop=4 expandtab cinoptions=b1,g0,N-s cinkeys+=0=break: */