/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4; fill-column: 100 -*- */

/*

 * This file is part of the LibreOffice project.

 *

 * This Source Code Form is subject to the terms of the Mozilla Public

 * License, v. 2.0. If a copy of the MPL was not distributed with this

 * file, You can obtain one at http://mozilla.org/MPL/2.0/.

 */

#include <smediteng.hxx>

#include <smmod.hxx>

#include <cfgitem.hxx>

#include <vcl/settings.hxx>

#include <editeng/editview.hxx>

#include <editeng/eeitem.hxx>

#include <editeng/fhgtitem.hxx>

#include <editeng/fontitem.hxx>

#include <svl/itempool.hxx>

#include <svl/itemset.hxx>

#include <unotools/fontdefs.hxx>

#include <vcl/outdev.hxx>

#include <vcl/rendercontext/GetDefaultFontFlags.hxx>

#include <vcl/svapp.hxx>

SmEditEngine::SmEditEngine(SfxItemPool* pItemPool)

    : EditEngine(pItemPool)

    , m_nOldZoom(100)

    , m_nNewZoom(100)

    , m_nDefaultFontSize(0)

    , m_aAllSelection(0, 0, 0, 0)

{

    SetText(u""_ustr);

    // Add external text leading

    SetAddExtLeading(true);

    // Allow to undo changes ( Ctrl + z )

    EnableUndo(true);

    // Length in pixel of a tabulation

    SetDefTab(sal_uInt16(Application::GetDefaultDevice()->GetTextWidth(u"XXXX"_ustr)));

    // Set default background color by theme

    SetBackgroundColor(

        Application::GetDefaultDevice()->GetSettings().GetStyleSettings().GetFieldColor());

    // Control words

    SetControlWord((GetControlWord() | EEControlBits::AUTOINDENTING)

                   & EEControlBits(~EEControlBits::UNDOATTRIBS)

                   & EEControlBits(~EEControlBits::PASTESPECIAL));

    // Word delimiters for auto word selection by double click

    SetWordDelimiters(u" .=+-*/(){}[];\""_ustr);

    // Default mapping mode

    SetRefMapMode(MapMode(MapUnit::MapPixel));

    // Default size of the box

    SetPaperSize(Size(1000, 0));

}

bool SmEditEngine::checkZoom()

{

    return m_nOldZoom != (m_nNewZoom = SmModule::get()->GetConfig()->GetSmEditWindowZoomFactor());

}

void SmEditEngine::executeZoom(EditView* pEditView)

{

    if (checkZoom())

    {

        updateZoom();

        if (pEditView)

        {

            FormatAndLayout(pEditView);

            pEditView->SetSelection(pEditView->GetSelection());

        }

    }

}

void SmEditEngine::updateZoom()

{

    // In first run get font size as base to scale

    if (m_nDefaultFontSize == 0)

    {

        SfxItemSet sfxatts = GetAttribs(0, 0, 0, GetAttribsFlags::CHARATTRIBS);

        const SvxFontHeightItem* sfxattsh = sfxatts.GetItem(EE_CHAR_FONTHEIGHT);

        m_nDefaultFontSize = sfxattsh->GetHeight();

    }

    // Now we calculate the new font size

    sal_Int32 nNewFontSize = m_nDefaultFontSize * m_nNewZoom / 100;

    // We apply the new font size to all the text

    updateAllESelection(); // Update length of the text

    SfxItemSet aSet = GetEmptyItemSet();

    aSet.Put(SvxFontHeightItem(nNewFontSize, 100, EE_CHAR_FONTHEIGHT));

    QuickSetAttribs(aSet, m_aAllSelection);

    // We don't forget to equalize the zoomvalues

    m_nOldZoom = m_nNewZoom;

}

void SmEditEngine::updateAllESelection()

{

    sal_Int32 paracount = GetParagraphCount();

    m_aAllSelection.end.nPara = paracount > 0 ? paracount - 1 : 0;

    sal_Int32 textlength = GetTextLen(m_aAllSelection.end.nPara);

    m_aAllSelection.end.nIndex = textlength > 0 ? textlength : 0;

}

void SmEditEngine::setSmItemPool(SfxItemPool* mpItemPool, const SvtLinguOptions& maLangOptions)

{

    // Set fonts to be used

    struct FontData

    {

        LanguageType nFallbackLang;

        LanguageType nLang;

        DefaultFontType nFontType;

        sal_uInt16 nFontInfoId;

    };

    FontData aFontDataTable[3]

        = { // info to get western font to be used

            { LANGUAGE_ENGLISH_US, maLangOptions.nDefaultLanguage, DefaultFontType::FIXED,

              EE_CHAR_FONTINFO },

            // info to get CJK font to be used

            { LANGUAGE_JAPANESE, maLangOptions.nDefaultLanguage_CJK, DefaultFontType::CJK_TEXT,

              EE_CHAR_FONTINFO_CJK },

            // info to get CTL font to be used

            { LANGUAGE_ARABIC_SAUDI_ARABIA, maLangOptions.nDefaultLanguage_CTL,

              DefaultFontType::CTL_TEXT, EE_CHAR_FONTINFO_CTL }

          };

    // Text color

    auto aDefaultDevice = Application::GetDefaultDevice();

    Color aTextColor = aDefaultDevice->GetSettings().GetStyleSettings().GetFieldTextColor();

    for (const FontData& aFontData : aFontDataTable)

    {

        LanguageType nLang

            = (LANGUAGE_NONE == aFontData.nLang) ? aFontData.nFallbackLang : aFontData.nLang;

        vcl::Font aFont = OutputDevice::GetDefaultFont(aFontData.nFontType, nLang,

                                                       GetDefaultFontFlags::OnlyOne);

        aFont.SetColor(aTextColor);

        mpItemPool->SetUserDefaultItem(SvxFontItem(

            aFont.GetFamilyTypeMaybeAskConfig(), aFont.GetFamilyName(), aFont.GetStyleName(),

            aFont.GetPitchMaybeAskConfig(), aFont.GetCharSet(), aFontData.nFontInfoId));

    }

    // Set font heights

    SvxFontHeightItem aFontHeight(

        aDefaultDevice->LogicToPixel(Size(0, 11), MapMode(MapUnit::MapPoint)).Height(), 100,

        EE_CHAR_FONTHEIGHT);

    mpItemPool->SetUserDefaultItem(aFontHeight);

    aFontHeight.SetWhich(EE_CHAR_FONTHEIGHT_CJK);

    mpItemPool->SetUserDefaultItem(aFontHeight);

    aFontHeight.SetWhich(EE_CHAR_FONTHEIGHT_CTL);

    mpItemPool->SetUserDefaultItem(aFontHeight);

}

/* vim:set shiftwidth=4 softtabstop=4 expandtab cinoptions=b1,g0,N-s cinkeys+=0=break: */