path: root/starmath/source/view.cxx

/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
 * 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/.
 *
 * This file incorporates work covered by the following license notice:
 *
 *   Licensed to the Apache Software Foundation (ASF) under one or more
 *   contributor license agreements. See the NOTICE file distributed
 *   with this work for additional information regarding copyright
 *   ownership. The ASF licenses this file to you under the Apache
 *   License, Version 2.0 (the "License"); you may not use this file
 *   except in compliance with the License. You may obtain a copy of
 *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
 */

#include <sal/config.h>

#include <com/sun/star/accessibility/AccessibleEventId.hpp>
#include <com/sun/star/accessibility/AccessibleStateType.hpp>
#include <com/sun/star/frame/Desktop.hpp>
#include <com/sun/star/frame/XFramesSupplier.hpp>
#include <com/sun/star/container/XChild.hpp>

#include <comphelper/lok.hxx>
#include <comphelper/processfactory.hxx>
#include <comphelper/servicehelper.hxx>
#include <comphelper/storagehelper.hxx>
#include <comphelper/string.hxx>
#include <i18nutil/unicode.hxx>
#include <officecfg/Office/Common.hxx>
#include <sfx2/dispatch.hxx>
#include <sfx2/docfile.hxx>
#include <sfx2/docfilt.hxx>
#include <sfx2/docinsert.hxx>
#include <sfx2/filedlghelper.hxx>
#include <sfx2/infobar.hxx>
#include <sfx2/msg.hxx>
#include <sfx2/objface.hxx>
#include <sfx2/printer.hxx>
#include <sfx2/request.hxx>
#include <sfx2/sfxbasecontroller.hxx>
#include <sfx2/sidebar/SidebarChildWindow.hxx>
#include <sfx2/viewfac.hxx>
#include <svl/eitem.hxx>
#include <svl/itemset.hxx>
#include <svl/poolitem.hxx>
#include <svl/stritem.hxx>
#include <vcl/transfer.hxx>
#include <svtools/colorcfg.hxx>
#include <svl/whiter.hxx>
#include <svx/sidebar/SelectionChangeHandler.hxx>
#include <svx/zoomslideritem.hxx>
#include <editeng/editeng.hxx>
#include <editeng/editview.hxx>
#include <svx/svxdlg.hxx>
#include <sfx2/zoomitem.hxx>
#include <vcl/commandevent.hxx>
#include <vcl/event.hxx>
#include <vcl/settings.hxx>
#include <vcl/virdev.hxx>
#include <sal/log.hxx>
#include <tools/svborder.hxx>
#include <o3tl/string_view.hxx>

#include <unotools/streamwrap.hxx>

#include <unomodel.hxx>
#include <view.hxx>
#include <cfgitem.hxx>
#include <dialog.hxx>
#include <document.hxx>
#include <starmath.hrc>
#include <strings.hrc>
#include <smmod.hxx>
#include <mathmlimport.hxx>
#include <cursor.hxx>
#include "accessibility.hxx"
#include <ElementsDockingWindow.hxx>
#include <helpids.h>

#define MINZOOM sal_uInt16(25)
#define MAXZOOM sal_uInt16(800)

// space around the edit window, in pixels
// fdo#69111: Increased border on the top so that the window is
// easier to tear off.
#define CMD_BOX_PADDING 3
#define CMD_BOX_PADDING_TOP 11

#define ShellClass_SmViewShell
#include <smslots.hxx>

using namespace css;
using namespace css::accessibility;
using namespace css::uno;

SmGraphicWindow::SmGraphicWindow(SmViewShell& rShell)
    : InterimItemWindow(&rShell.GetViewFrame()->GetWindow(), "modules/smath/ui/mathwindow.ui", "MathWindow")
    , nLinePixH(GetSettings().GetStyleSettings().GetScrollBarSize())
    , nColumnPixW(nLinePixH)
    , nZoom(100)
    // continue to use user-scrolling to make this work equivalent to how it 'always' worked
    , mxScrolledWindow(m_xBuilder->weld_scrolled_window("scrolledwindow", true))
    , mxGraphic(new SmGraphicWidget(rShell, *this))
    , mxGraphicWin(new weld::CustomWeld(*m_xBuilder, "mathview", *mxGraphic))
{
    InitControlBase(mxGraphic->GetDrawingArea());

    mxScrolledWindow->connect_hadjustment_changed(LINK(this, SmGraphicWindow, ScrollHdl));
    mxScrolledWindow->connect_vadjustment_changed(LINK(this, SmGraphicWindow, ScrollHdl));

    // docking windows are usually hidden (often already done in the
    // resource) and will be shown by the sfx framework.
    Hide();
}

void SmGraphicWindow::dispose()
{
    InitControlBase(nullptr);
    mxGraphicWin.reset();
    mxGraphic.reset();
    mxScrolledWindow.reset();
    InterimItemWindow::dispose();
}

SmGraphicWindow::~SmGraphicWindow()
{
    disposeOnce();
}

void SmGraphicWindow::Resize()
{
    InterimItemWindow::Resize();

    // get the new output-size in pixel
    Size aOutPixSz = GetOutputSizePixel();

    // determine the size of the output-area and if we need scrollbars
    const auto nScrSize = mxScrolledWindow->get_scroll_thickness();
    bool bVVisible = false; // by default no vertical-ScrollBar
    bool bHVisible = false; // by default no horizontal-ScrollBar
    bool bChanged;          // determines if a visiblility was changed
    do
    {
        bChanged = false;

        // does we need a vertical ScrollBar
        if ( aOutPixSz.Width() < aTotPixSz.Width() && !bHVisible )
        {
            bHVisible = true;
            aOutPixSz.AdjustHeight( -nScrSize );
            bChanged = true;
        }

        // does we need a horizontal ScrollBar
        if ( aOutPixSz.Height() < aTotPixSz.Height() && !bVVisible )
        {
            bVVisible = true;
            aOutPixSz.AdjustWidth( -nScrSize );
            bChanged = true;
        }

    }
    while ( bChanged );   // until no visibility has changed

    // store the old offset and map-mode
    MapMode aMap(GetGraphicMapMode());
    Point aOldPixOffset(aPixOffset);

    // justify (right/bottom borders should never exceed the virtual window)
    Size aPixDelta;
    if ( aPixOffset.X() < 0 &&
         aPixOffset.X() + aTotPixSz.Width() < aOutPixSz.Width() )
        aPixDelta.setWidth(
            aOutPixSz.Width() - ( aPixOffset.X() + aTotPixSz.Width() ) );
    if ( aPixOffset.Y() < 0 &&
         aPixOffset.Y() + aTotPixSz.Height() < aOutPixSz.Height() )
        aPixDelta.setHeight(
            aOutPixSz.Height() - ( aPixOffset.Y() + aTotPixSz.Height() ) );
    if ( aPixDelta.Width() || aPixDelta.Height() )
    {
        aPixOffset.AdjustX(aPixDelta.Width() );
        aPixOffset.AdjustY(aPixDelta.Height() );
    }

    // for axis without scrollbar restore the origin
    if ( !bVVisible || !bHVisible )
    {
        aPixOffset = Point(
                     bHVisible
                     ? aPixOffset.X()
                     : (aOutPixSz.Width()-aTotPixSz.Width()) / 2,
                     bVVisible
                     ? aPixOffset.Y()
                     : (aOutPixSz.Height()-aTotPixSz.Height()) / 2 );
    }
    if (bHVisible && mxScrolledWindow->get_hpolicy() == VclPolicyType::NEVER)
        aPixOffset.setX( 0 );
    if (bVVisible && mxScrolledWindow->get_vpolicy() == VclPolicyType::NEVER)
        aPixOffset.setY( 0 );

    // select the shifted map-mode
    if (aPixOffset != aOldPixOffset)
        SetGraphicMapMode(aMap);

    // show or hide scrollbars
    mxScrolledWindow->set_vpolicy(bVVisible ? VclPolicyType::ALWAYS : VclPolicyType::NEVER);
    mxScrolledWindow->set_hpolicy(bHVisible ? VclPolicyType::ALWAYS : VclPolicyType::NEVER);

    // resize scrollbars and set their ranges
    if ( bHVisible )
    {
        mxScrolledWindow->hadjustment_configure(-aPixOffset.X(), 0, aTotPixSz.Width(), nColumnPixW,
                                                aOutPixSz.Width(), aOutPixSz.Width());
    }
    if ( bVVisible )
    {
        mxScrolledWindow->vadjustment_configure(-aPixOffset.Y(), 0, aTotPixSz.Height(), nLinePixH,
                                                aOutPixSz.Height(), aOutPixSz.Height());
    }
}

IMPL_LINK_NOARG(SmGraphicWindow, ScrollHdl, weld::ScrolledWindow&, void)
{
    MapMode aMap(GetGraphicMapMode());
    Point aNewPixOffset(aPixOffset);

    // scrolling horizontally?
    if (mxScrolledWindow->get_hpolicy() == VclPolicyType::ALWAYS)
        aNewPixOffset.setX(-mxScrolledWindow->hadjustment_get_value());

    // scrolling vertically?
    if (mxScrolledWindow->get_vpolicy() == VclPolicyType::ALWAYS)
        aNewPixOffset.setY(-mxScrolledWindow->vadjustment_get_value());

    // scrolling?
    if (aPixOffset == aNewPixOffset)
        return;

    // recompute the logical scroll units
    aPixOffset = aNewPixOffset;

    SetGraphicMapMode(aMap);
}

void SmGraphicWindow::SetGraphicMapMode(const MapMode& rNewMapMode)
{
    OutputDevice& rDevice = mxGraphic->GetDrawingArea()->get_ref_device();
    MapMode aMap( rNewMapMode );
    aMap.SetOrigin( aMap.GetOrigin() + rDevice.PixelToLogic( aPixOffset, aMap ) );
    rDevice.SetMapMode( aMap );
    mxGraphic->Invalidate();
}

MapMode SmGraphicWindow::GetGraphicMapMode() const
{
    OutputDevice& rDevice = mxGraphic->GetDrawingArea()->get_ref_device();
    MapMode aMap(rDevice.GetMapMode());
    aMap.SetOrigin( aMap.GetOrigin() - rDevice.PixelToLogic( aPixOffset ) );
    return aMap;
}

void SmGraphicWindow::SetTotalSize( const Size& rNewSize )
{
    OutputDevice& rDevice = mxGraphic->GetDrawingArea()->get_ref_device();
    aTotPixSz = rDevice.LogicToPixel(rNewSize);
    Resize();
}

Size SmGraphicWindow::GetTotalSize() const
{
    OutputDevice& rDevice = mxGraphic->GetDrawingArea()->get_ref_device();
    return rDevice.PixelToLogic(aTotPixSz);
}

void SmGraphicWindow::ShowContextMenu(const CommandEvent& rCEvt)
{
    GetParent()->ToTop();
    Point aPos(5, 5);
    if (rCEvt.IsMouseEvent())
        aPos = rCEvt.GetMousePosPixel();

    // added for replaceability of context menus
    SfxDispatcher::ExecutePopup( this, &aPos );
}

SmGraphicWidget::SmGraphicWidget(SmViewShell& rShell, SmGraphicWindow& rGraphicWindow)
    : mrGraphicWindow(rGraphicWindow)
    , bIsCursorVisible(false)
    , bIsLineVisible(false)
    , aCaretBlinkTimer("SmGraphicWidget aCaretBlinkTimer")
    , mrViewShell(rShell)
{
}

void SmGraphicWidget::SetDrawingArea(weld::DrawingArea* pDrawingArea)
{
    weld::CustomWidgetController::SetDrawingArea(pDrawingArea);

    OutputDevice& rDevice = pDrawingArea->get_ref_device();

    rDevice.SetBackground(SM_MOD()->GetColorConfig().GetColorValue(svtools::DOCCOLOR).nColor);

    const Fraction aFraction(1, 1);
    rDevice.SetMapMode(MapMode(MapUnit::Map100thMM, Point(), aFraction, aFraction));

    SetTotalSize();

    SetHelpId(HID_SMA_WIN_DOCUMENT);

    ShowLine(false);
    CaretBlinkInit();
}

SmGraphicWidget::~SmGraphicWidget()
{
    if (mxAccessible.is())
        mxAccessible->ClearWin();    // make Accessible nonfunctional
    mxAccessible.clear();
    CaretBlinkStop();
}

bool SmGraphicWidget::MouseButtonDown(const MouseEvent& rMEvt)
{
    GrabFocus();

    // set formula-cursor and selection of edit window according to the
    // position clicked at

    SAL_WARN_IF( rMEvt.GetClicks() == 0, "starmath", "0 clicks" );
    if ( !rMEvt.IsLeft() )
        return true;

    OutputDevice& rDevice = GetDrawingArea()->get_ref_device();
    // get click position relative to formula
    Point aPos(rDevice.PixelToLogic(rMEvt.GetPosPixel()) - GetFormulaDrawPos());

    const SmNode *pTree = mrViewShell.GetDoc()->GetFormulaTree();
    if (!pTree)
        return true;

    if (SmViewShell::IsInlineEditEnabled()) {
        mrViewShell.GetDoc()->GetCursor().MoveTo(&rDevice, aPos, !rMEvt.IsShift());
        return true;
    }
    const SmNode *pNode = nullptr;
    // if it was clicked inside the formula then get the appropriate node
    if (pTree->OrientedDist(aPos) <= 0)
        pNode = pTree->FindRectClosestTo(aPos);

    if (!pNode)
        return true;

    SmEditWindow* pEdit = mrViewShell.GetEditWindow();
    if (!pEdit)
        return true;

    // set selection to the beginning of the token
    pEdit->SetSelection(pNode->GetSelection());
    SetCursor(pNode);

    // allow for immediate editing and
    //! implicitly synchronize the cursor position mark in this window
    pEdit->GrabFocus();

    return true;
}

bool SmGraphicWidget::MouseMove(const MouseEvent &rMEvt)
{
    if (rMEvt.IsLeft() && SmViewShell::IsInlineEditEnabled())
    {
        OutputDevice& rDevice = GetDrawingArea()->get_ref_device();
        Point aPos(rDevice.PixelToLogic(rMEvt.GetPosPixel()) - GetFormulaDrawPos());
        mrViewShell.GetDoc()->GetCursor().MoveTo(&rDevice, aPos, false);

        CaretBlinkStop();
        SetIsCursorVisible(true);
        CaretBlinkStart();
        RepaintViewShellDoc();
    }
    return true;
}

void SmGraphicWidget::GetFocus()
{
    if (!SmViewShell::IsInlineEditEnabled())
        return;
    if (mrViewShell.GetEditWindow())
        mrViewShell.GetEditWindow()->Flush();
    //Let view shell know what insertions should be done in visual editor
    mrViewShell.SetInsertIntoEditWindow(false);
    SetIsCursorVisible(true);
    ShowLine(true);
    CaretBlinkStart();
    RepaintViewShellDoc();
}

void SmGraphicWidget::LoseFocus()
{
    if (mxAccessible.is())
    {
        uno::Any aOldValue, aNewValue;
        aOldValue <<= AccessibleStateType::FOCUSED;
        // aNewValue remains empty
        mxAccessible->LaunchEvent( AccessibleEventId::STATE_CHANGED,
                aOldValue, aNewValue );
    }
    if (!SmViewShell::IsInlineEditEnabled())
        return;
    SetIsCursorVisible(false);
    ShowLine(false);
    CaretBlinkStop();
    RepaintViewShellDoc();
}

void SmGraphicWidget::RepaintViewShellDoc()
{
    SmDocShell* pDoc = mrViewShell.GetDoc();
    if (pDoc)
        pDoc->Repaint();
}

IMPL_LINK_NOARG(SmGraphicWidget, CaretBlinkTimerHdl, Timer *, void)
{
    if (IsCursorVisible())
        SetIsCursorVisible(false);
    else
        SetIsCursorVisible(true);

    RepaintViewShellDoc();
}

void SmGraphicWidget::CaretBlinkInit()
{
    aCaretBlinkTimer.SetInvokeHandler(LINK(this, SmGraphicWidget, CaretBlinkTimerHdl));
    aCaretBlinkTimer.SetTimeout(Application::GetSettings().GetStyleSettings().GetCursorBlinkTime());
}

void SmGraphicWidget::CaretBlinkStart()
{
    if (!SmViewShell::IsInlineEditEnabled())
        return;
    if (aCaretBlinkTimer.GetTimeout() != STYLE_CURSOR_NOBLINKTIME)
        aCaretBlinkTimer.Start();
}

void SmGraphicWidget::CaretBlinkStop()
{
    if (!SmViewShell::IsInlineEditEnabled())
        return;
    aCaretBlinkTimer.Stop();
}

// shows or hides the formula-cursor depending on 'bShow' is true or not
void SmGraphicWidget::ShowCursor(bool bShow)
{
    if (SmViewShell::IsInlineEditEnabled())
        return;

    bool bInvert = bShow != IsCursorVisible();
    if (bInvert)
    {
        OutputDevice& rDevice = GetDrawingArea()->get_ref_device();
        InvertFocusRect(rDevice, aCursorRect);
    }

    SetIsCursorVisible(bShow);
}

void SmGraphicWidget::ShowLine(bool bShow)
{
    if (!SmViewShell::IsInlineEditEnabled())
        return;

    bIsLineVisible = bShow;
}

void SmGraphicWidget::SetCursor(const SmNode *pNode)
{
    if (SmViewShell::IsInlineEditEnabled())
        return;

    const SmNode *pTree = mrViewShell.GetDoc()->GetFormulaTree();

    // get appropriate rectangle
    Point aOffset (pNode->GetTopLeft() - pTree->GetTopLeft()),
          aTLPos  (GetFormulaDrawPos() + aOffset);
    aTLPos.AdjustX( -(pNode->GetItalicLeftSpace()) );
    Size  aSize   (pNode->GetItalicSize());

    SetCursor(tools::Rectangle(aTLPos, aSize));
}

void SmGraphicWidget::SetCursor(const tools::Rectangle &rRect)
    // sets cursor to new position (rectangle) 'rRect'.
    // The old cursor will be removed, and the new one will be shown if
    // that is activated in the ConfigItem
{
    if (SmViewShell::IsInlineEditEnabled())
        return;

    SmModule *pp = SM_MOD();

    if (IsCursorVisible())
        ShowCursor(false);      // clean up remainings of old cursor
    aCursorRect = rRect;
    if (pp->GetConfig()->IsShowFormulaCursor())
        ShowCursor(true);       // draw new cursor
}

const SmNode * SmGraphicWidget::SetCursorPos(sal_uInt16 nRow, sal_uInt16 nCol)
    // looks for a VISIBLE node in the formula tree with its token at
    // (or around) the position 'nRow', 'nCol' in the edit window
    // (row and column numbering starts with 1 there!).
    // If there is such a node the formula-cursor is set to cover that nodes
    // rectangle. If not the formula-cursor will be hidden.
    // In any case the search result is being returned.
{
    if (SmViewShell::IsInlineEditEnabled())
        return nullptr;

    // find visible node with token at nRow, nCol
    const SmNode *pTree = mrViewShell.GetDoc()->GetFormulaTree(),
                 *pNode = nullptr;
    if (pTree)
        pNode = pTree->FindTokenAt(nRow, nCol);

    if (pNode)
        SetCursor(pNode);
    else
        ShowCursor(false);

    return pNode;
}

void SmGraphicWidget::Paint(vcl::RenderContext& rRenderContext, const tools::Rectangle&)
{
    SmDocShell& rDoc = *mrViewShell.GetDoc();
    Point aPoint;

    rDoc.DrawFormula(rRenderContext, aPoint, true);  //! modifies aPoint to be the topleft
                                                     //! corner of the formula
    aFormulaDrawPos = aPoint;
    if (SmViewShell::IsInlineEditEnabled())
    {
        //Draw cursor if any...
        if (mrViewShell.GetDoc()->HasCursor() && IsLineVisible())
            mrViewShell.GetDoc()->GetCursor().Draw(rRenderContext, aPoint, IsCursorVisible());
    }
    else
    {
        SetIsCursorVisible(false);  // (old) cursor must be drawn again

        const SmEditWindow* pEdit = mrViewShell.GetEditWindow();
        if (pEdit)
        {   // get new position for formula-cursor (for possible altered formula)
            sal_Int32  nRow;
            sal_uInt16 nCol;
            SmGetLeftSelectionPart(pEdit->GetSelection(), nRow, nCol);
            const SmNode *pFound = SetCursorPos(static_cast<sal_uInt16>(nRow), nCol);

            SmModule *pp = SM_MOD();
            if (pFound && pp->GetConfig()->IsShowFormulaCursor())
                ShowCursor(true);
        }
    }
}

void SmGraphicWidget::SetTotalSize()
{
    SmDocShell &rDoc = *mrViewShell.GetDoc();
    OutputDevice& rDevice = GetDrawingArea()->get_ref_device();
    const Size aTmp(rDevice.PixelToLogic(rDevice.LogicToPixel(rDoc.GetSize())));
    if (aTmp != mrGraphicWindow.GetTotalSize())
        mrGraphicWindow.SetTotalSize(aTmp);
}

namespace
{
SmBracketType BracketTypeOf(sal_uInt32 c)
{
    switch (c)
    {
        case '(':
        case ')':
            return SmBracketType::Round;
        case '[':
        case ']':
            return SmBracketType::Square;
        case '{':
        case '}':
            return SmBracketType::Curly;
    }
    assert(false); // Unreachable
    return SmBracketType::Round;
}

bool CharInput(sal_uInt32 c, SmCursor& rCursor, OutputDevice& rDevice)
{
    switch (c)
    {
        case 0:
            return false;
        case ' ':
            rCursor.InsertElement(BlankElement);
            break;
        case '!':
            rCursor.InsertElement(FactorialElement);
            break;
        case '%':
            rCursor.InsertElement(PercentElement);
            break;
        case '*':
            rCursor.InsertElement(CDotElement);
            break;
        case '+':
            rCursor.InsertElement(PlusElement);
            break;
        case '-':
            rCursor.InsertElement(MinusElement);
            break;
        case '<':
            rCursor.InsertElement(LessThanElement);
            break;
        case '=':
            rCursor.InsertElement(EqualElement);
            break;
        case '>':
            rCursor.InsertElement(GreaterThanElement);
            break;
        case '^':
            rCursor.InsertSubSup(RSUP);
            break;
        case '_':
            rCursor.InsertSubSup(RSUB);
            break;
        case '/':
            rCursor.InsertFraction();
            break;
        case '(':
        case '[':
        case '{':
            rCursor.InsertBrackets(BracketTypeOf(c));
            break;
        case ')':
        case ']':
        case '}':
            if (rCursor.IsAtTailOfBracket(BracketTypeOf(c)))
            {
                rCursor.Move(&rDevice, MoveRight);
                break;
            }
            [[fallthrough]];
        default:
            rCursor.InsertText(OUString(&c, 1));
            break;
    }
    return true;
}
}

bool SmGraphicWidget::KeyInput(const KeyEvent& rKEvt)
{
    if (!SmViewShell::IsInlineEditEnabled())
        return mrViewShell.KeyInput(rKEvt);

    bool bConsumed = true;

    SmCursor& rCursor = mrViewShell.GetDoc()->GetCursor();
    KeyFuncType eFunc = rKEvt.GetKeyCode().GetFunction();
    if (eFunc == KeyFuncType::COPY)
        rCursor.Copy();
    else if (eFunc == KeyFuncType::CUT)
        rCursor.Cut();
    else if (eFunc == KeyFuncType::PASTE)
        rCursor.Paste();
    else {
    OutputDevice& rDevice = GetDrawingArea()->get_ref_device();
    sal_uInt16 nCode = rKEvt.GetKeyCode().GetCode();
    switch(nCode)
    {
        case KEY_LEFT:
        {
            rCursor.Move(&rDevice, MoveLeft, !rKEvt.GetKeyCode().IsShift());
        }break;
        case KEY_RIGHT:
        {
            rCursor.Move(&rDevice, MoveRight, !rKEvt.GetKeyCode().IsShift());
        }break;
        case KEY_UP:
        {
            rCursor.Move(&rDevice, MoveUp, !rKEvt.GetKeyCode().IsShift());
        }break;
        case KEY_DOWN:
        {
            rCursor.Move(&rDevice, MoveDown, !rKEvt.GetKeyCode().IsShift());
        }break;
        case KEY_RETURN:
        {
            if(!rKEvt.GetKeyCode().IsShift())
                rCursor.InsertRow();
        }break;
        case KEY_DELETE:
        {
            if(!rCursor.HasSelection()){
                rCursor.Move(&rDevice, MoveRight, false);
                if(rCursor.HasComplexSelection()) break;
            }
            rCursor.Delete();
        }break;
        case KEY_BACKSPACE:
        {
            rCursor.DeletePrev(&rDevice);
        }break;
        default:
        {
            if (!CharInput(rKEvt.GetCharCode(), rCursor, rDevice))
                bConsumed = mrViewShell.KeyInput(rKEvt);
        }
    }
    }
    CaretBlinkStop();
    CaretBlinkStart();
    SetIsCursorVisible(true);
    RepaintViewShellDoc();

    return bConsumed;
}

bool SmGraphicWidget::Command(const CommandEvent& rCEvt)
{
    bool bCallBase = true;
    if (!mrViewShell.GetViewFrame()->GetFrame().IsInPlace())
    {
        switch ( rCEvt.GetCommand() )
        {
            case CommandEventId::ContextMenu:
                // purely for "ExecutePopup" taking a vcl::Window and
                // we assume SmGraphicWindow 0,0 is at SmEditWindow 0,0
                mrGraphicWindow.ShowContextMenu(rCEvt);
                bCallBase = false;
            break;

            case CommandEventId::Wheel:
            {
                const CommandWheelData* pWData = rCEvt.GetWheelData();
                if  ( pWData && CommandWheelMode::ZOOM == pWData->GetMode() )
                {
                    sal_uInt16 nTmpZoom = mrGraphicWindow.GetZoom();
                    if( 0 > pWData->GetDelta() )
                        nTmpZoom -= 10;
                    else
                        nTmpZoom += 10;
                    mrGraphicWindow.SetZoom(nTmpZoom);
                    bCallBase = false;
                }
            }
            break;

            default: break;
        }
    }
    else
    {
        switch (rCEvt.GetCommand())
        {
            case CommandEventId::ExtTextInput:
                if (comphelper::LibreOfficeKit::isActive())
                {
                    const CommandExtTextInputData* pData = rCEvt.GetExtTextInputData();
                    assert(pData);
                    const OUString& rText = pData->GetText();
                    SmCursor& rCursor = mrViewShell.GetDoc()->GetCursor();
                    OutputDevice& rDevice = GetDrawingArea()->get_ref_device();
                    for (sal_Int32 i = 0; i < rText.getLength();)
                        CharInput(rText.iterateCodePoints(&i), rCursor, rDevice);
                    bCallBase = false;
                }
                break;
            default:
                break;
        }
    }
    return !bCallBase;
}

void SmGraphicWindow::SetZoom(sal_uInt16 Factor)
{
    nZoom = std::clamp(Factor, MINZOOM, MAXZOOM);
    Fraction aFraction(nZoom, 100);
    SetGraphicMapMode(MapMode(MapUnit::Map100thMM, Point(), aFraction, aFraction));
    mxGraphic->SetTotalSize();
    SmViewShell& rViewSh = mxGraphic->GetView();
    rViewSh.GetViewFrame()->GetBindings().Invalidate(SID_ATTR_ZOOM);
    rViewSh.GetViewFrame()->GetBindings().Invalidate(SID_ATTR_ZOOMSLIDER);
}

void SmGraphicWindow::ZoomToFitInWindow()
{
    SmViewShell& rViewSh = mxGraphic->GetView();
    SmDocShell& rDoc = *rViewSh.GetDoc();

    // set defined mapmode before calling 'LogicToPixel' below
    SetGraphicMapMode(MapMode(MapUnit::Map100thMM));

    OutputDevice& rDevice = mxGraphic->GetDrawingArea()->get_ref_device();
    Size aSize(rDevice.LogicToPixel(rDoc.GetSize()));
    Size aWindowSize(GetSizePixel());

    if (!aSize.IsEmpty())
    {
        tools::Long nVal = std::min ((85 * aWindowSize.Width())  / aSize.Width(),
                      (85 * aWindowSize.Height()) / aSize.Height());
        SetZoom ( sal::static_int_cast< sal_uInt16 >(nVal) );
    }
}

uno::Reference< XAccessible > SmGraphicWidget::CreateAccessible()
{
    if (!mxAccessible.is())
    {
        mxAccessible = new SmGraphicAccessible( this );
    }
    return mxAccessible;
}

/**************************************************************************/
SmGraphicController::SmGraphicController(SmGraphicWidget &rSmGraphic,
                        sal_uInt16          nId_,
                        SfxBindings     &rBindings) :
    SfxControllerItem(nId_, rBindings),
    rGraphic(rSmGraphic)
{
}

void SmGraphicController::StateChangedAtToolBoxControl(sal_uInt16 nSID, SfxItemState eState, const SfxPoolItem* pState)
{
    rGraphic.SetTotalSize();
    rGraphic.Invalidate();
    SfxControllerItem::StateChangedAtToolBoxControl (nSID, eState, pState);
}

/**************************************************************************/
SmEditController::SmEditController(SmEditWindow &rSmEdit,
                     sal_uInt16       nId_,
                     SfxBindings  &rBindings) :
    SfxControllerItem(nId_, rBindings),
    rEdit(rSmEdit)
{
}

void SmEditController::StateChangedAtToolBoxControl(sal_uInt16 nSID, SfxItemState eState, const SfxPoolItem* pState)
{
    const SfxStringItem *pItem =  dynamic_cast<const SfxStringItem*>( pState);

    if ((pItem != nullptr) && (rEdit.GetText() != pItem->GetValue()))
        rEdit.SetText(pItem->GetValue());
    SfxControllerItem::StateChangedAtToolBoxControl (nSID, eState, pState);
}

/**************************************************************************/
SmCmdBoxWindow::SmCmdBoxWindow(SfxBindings *pBindings_, SfxChildWindow *pChildWindow,
                               vcl::Window *pParent)
    : SfxDockingWindow(pBindings_, pChildWindow, pParent, "EditWindow", "modules/smath/ui/editwindow.ui")
    , m_xEdit(new SmEditWindow(*this, *m_xBuilder))
    , aController(*m_xEdit, SID_TEXT, *pBindings_)
    , bExiting(false)
    , aInitialFocusTimer("SmCmdBoxWindow aInitialFocusTimer")
{
    set_id("math_edit");

    SetHelpId( HID_SMA_COMMAND_WIN );
    SetSizePixel(LogicToPixel(Size(292 , 94), MapMode(MapUnit::MapAppFont)));
    SetText(SmResId(STR_CMDBOXWINDOW));

    Hide();

    // Don't try to grab focus in LOK inline edit mode
    if (!comphelper::LibreOfficeKit::isActive())
    {
        aInitialFocusTimer.SetInvokeHandler(LINK(this, SmCmdBoxWindow, InitialFocusTimerHdl));
        aInitialFocusTimer.SetTimeout(100);
    }
}

Point SmCmdBoxWindow::WidgetToWindowPos(const weld::Widget& rWidget, const Point& rPos)
{
    Point aRet(rPos);
    int x(0), y(0), width(0), height(0);
    rWidget.get_extents_relative_to(*m_xContainer, x, y, width, height);
    aRet.Move(x, y);
    aRet.Move(m_xBox->GetPosPixel().X(), m_xBox->GetPosPixel().Y());
    return aRet;
}

void SmCmdBoxWindow::ShowContextMenu(const Point& rPos)
{
    ToTop();
    SmViewShell *pViewSh = GetView();
    if (pViewSh)
        pViewSh->GetViewFrame()->GetDispatcher()->ExecutePopup("edit", this, &rPos);
}

void SmCmdBoxWindow::Command(const CommandEvent& rCEvt)
{
    if (rCEvt.GetCommand() == CommandEventId::ContextMenu)
    {
        ShowContextMenu(rCEvt.GetMousePosPixel());
        return;
    }

    SfxDockingWindow::Command(rCEvt);
}

SmCmdBoxWindow::~SmCmdBoxWindow ()
{
    disposeOnce();
}

void SmCmdBoxWindow::dispose()
{
    aInitialFocusTimer.Stop();
    bExiting = true;
    aController.dispose();
    m_xEdit.reset();
    SfxDockingWindow::dispose();
}

SmViewShell * SmCmdBoxWindow::GetView()
{
    SfxDispatcher *pDispatcher = GetBindings().GetDispatcher();
    SfxViewShell *pView = pDispatcher ? pDispatcher->GetFrame()->GetViewShell() : nullptr;
    return  dynamic_cast<SmViewShell*>( pView);
}

Size SmCmdBoxWindow::CalcDockingSize(SfxChildAlignment eAlign)
{
    switch (eAlign)
    {
        case SfxChildAlignment::LEFT:
        case SfxChildAlignment::RIGHT:
            return Size();
        default:
            break;
    }
    return SfxDockingWindow::CalcDockingSize(eAlign);
}

SfxChildAlignment SmCmdBoxWindow::CheckAlignment(SfxChildAlignment eActual,
                                             SfxChildAlignment eWish)
{
    switch (eWish)
    {
        case SfxChildAlignment::TOP:
        case SfxChildAlignment::BOTTOM:
        case SfxChildAlignment::NOALIGNMENT:
            return eWish;
        default:
            break;
    }

    return eActual;
}

void SmCmdBoxWindow::StateChanged( StateChangedType nStateChange )
{
    if (StateChangedType::InitShow == nStateChange)
    {
        Resize();   // avoid SmEditWindow not being painted correctly

        // set initial position of window in floating mode
        if (IsFloatingMode())
            AdjustPosition();   //! don't change pos in docking-mode !

        aInitialFocusTimer.Start();
    }

    SfxDockingWindow::StateChanged( nStateChange );
}

IMPL_LINK_NOARG( SmCmdBoxWindow, InitialFocusTimerHdl, Timer *, void )
{
    // We want to have the focus in the edit window once Math has been opened
    // to allow for immediate typing.
    // Problem: There is no proper way to do this
    // Thus: this timer based solution has been implemented (see GrabFocus below)

    // Follow-up problem (#i114910): grabbing the focus may bust the help system since
    // it relies on getting the current frame which conflicts with grabbing the focus.
    // Thus aside from the 'GrabFocus' call everything else is to get the
    // help reliably working despite using 'GrabFocus'.

    try
    {
        uno::Reference< frame::XDesktop2 > xDesktop = frame::Desktop::create( comphelper::getProcessComponentContext() );

        m_xEdit->GrabFocus();

        SmViewShell* pView = GetView();
        assert(pView);
        bool bInPlace = pView->GetViewFrame()->GetFrame().IsInPlace();
        uno::Reference< frame::XFrame > xFrame( GetBindings().GetDispatcher()->GetFrame()->GetFrame().GetFrameInterface());
        if ( bInPlace )
        {
            uno::Reference<container::XChild> xModel(pView->GetDoc()->GetModel(),
                                                     uno::UNO_QUERY_THROW);
            uno::Reference< frame::XModel > xParent( xModel->getParent(), uno::UNO_QUERY_THROW );
            uno::Reference< frame::XController > xParentCtrler( xParent->getCurrentController() );
            uno::Reference< frame::XFramesSupplier > xParentFrame( xParentCtrler->getFrame(), uno::UNO_QUERY_THROW );
            xParentFrame->setActiveFrame( xFrame );
        }
        else
        {
            xDesktop->setActiveFrame( xFrame );
        }
    }
    catch (uno::Exception &)
    {
        SAL_WARN( "starmath", "failed to properly set initial focus to edit window" );
    }
}

void SmCmdBoxWindow::AdjustPosition()
{
    const tools::Rectangle aRect( Point(), GetParent()->GetOutputSizePixel() );
    Point aTopLeft( Point( aRect.Left(),
                           aRect.Bottom() - GetSizePixel().Height() ) );
    Point aPos( GetParent()->OutputToScreenPixel( aTopLeft ) );
    if (aPos.X() < 0)
        aPos.setX( 0 );
    if (aPos.Y() < 0)
        aPos.setY( 0 );
    SetPosPixel( aPos );
}

void SmCmdBoxWindow::ToggleFloatingMode()
{
    SfxDockingWindow::ToggleFloatingMode();

    if (GetFloatingWindow())
        GetFloatingWindow()->SetMinOutputSizePixel(Size (200, 50));
}

void SmCmdBoxWindow::GetFocus()
{
    if (!bExiting)
        m_xEdit->GrabFocus();
}

SFX_IMPL_DOCKINGWINDOW_WITHID(SmCmdBoxWrapper, SID_CMDBOXWINDOW);

SmCmdBoxWrapper::SmCmdBoxWrapper(vcl::Window *pParentWindow, sal_uInt16 nId,
                                 SfxBindings *pBindings,
                                 SfxChildWinInfo *pInfo) :
    SfxChildWindow(pParentWindow, nId)
{
    VclPtrInstance<SmCmdBoxWindow> pDialog(pBindings, this, pParentWindow);
    SetWindow(pDialog);
    // make window docked to the bottom initially (after first start)
    SetAlignment(SfxChildAlignment::BOTTOM);
    pDialog->setDeferredProperties();
    pDialog->set_border_width(CMD_BOX_PADDING);
    pDialog->set_margin_top(CMD_BOX_PADDING_TOP);
    pDialog->Initialize(pInfo);
}

SFX_IMPL_SUPERCLASS_INTERFACE(SmViewShell, SfxViewShell)

void SmViewShell::InitInterface_Impl()
{
    GetStaticInterface()->RegisterObjectBar(SFX_OBJECTBAR_TOOLS,
                                            SfxVisibilityFlags::Standard | SfxVisibilityFlags::FullScreen | SfxVisibilityFlags::Server,
                                            ToolbarId::Math_Toolbox);
    //Dummy-Objectbar, to avoid quiver while activating

    GetStaticInterface()->RegisterChildWindow(SmCmdBoxWrapper::GetChildWindowId());
    GetStaticInterface()->RegisterChildWindow(SmElementsDockingWindowWrapper::GetChildWindowId());
    GetStaticInterface()->RegisterChildWindow(SfxInfoBarContainerChild::GetChildWindowId());

    GetStaticInterface()->RegisterChildWindow(::sfx2::sidebar::SidebarChildWindow::GetChildWindowId());
}

SFX_IMPL_NAMED_VIEWFACTORY(SmViewShell, "Default")
{
    SFX_VIEW_REGISTRATION(SmDocShell);
}

void SmViewShell::InnerResizePixel(const Point &rOfs, const Size &rSize, bool)
{
    Size aObjSize = GetObjectShell()->GetVisArea().GetSize();
    if ( !aObjSize.IsEmpty() )
    {
        Size aProvidedSize = GetWindow()->PixelToLogic(rSize, MapMode(MapUnit::Map100thMM));
        Fraction aZoomX(aProvidedSize.Width(), aObjSize.Width());
        Fraction aZoomY(aProvidedSize.Height(), aObjSize.Height());
        MapMode aMap(mxGraphicWindow->GetGraphicMapMode());
        aMap.SetScaleX(aZoomX);
        aMap.SetScaleY(aZoomY);
        mxGraphicWindow->SetGraphicMapMode(aMap);
    }

    SetBorderPixel( SvBorder() );
    mxGraphicWindow->SetPosSizePixel(rOfs, rSize);
    GetGraphicWidget().SetTotalSize();
}

void SmViewShell::OuterResizePixel(const Point &rOfs, const Size &rSize)
{
    mxGraphicWindow->SetPosSizePixel(rOfs, rSize);
    if (GetDoc()->IsPreview())
        mxGraphicWindow->ZoomToFitInWindow();
}

void SmViewShell::QueryObjAreaPixel( tools::Rectangle& rRect ) const
{
    rRect.SetSize(mxGraphicWindow->GetSizePixel());
}

void SmViewShell::SetZoomFactor( const Fraction &rX, const Fraction &rY )
{
    const Fraction &rFrac = std::min(rX, rY);
    mxGraphicWindow->SetZoom(sal::static_int_cast<sal_uInt16>(tools::Long(rFrac * Fraction( 100, 1 ))));

    //To avoid rounding errors base class regulates crooked values too
    //if necessary
    SfxViewShell::SetZoomFactor( rX, rY );
}

Size SmViewShell::GetTextLineSize(OutputDevice const & rDevice, const OUString& rLine)
{
    Size   aSize(rDevice.GetTextWidth(rLine), rDevice.GetTextHeight());
    const tools::Long nTabPos = rLine.isEmpty() ? 0 : rDevice.approximate_digit_width() * 8;

    if (nTabPos)
    {
        aSize.setWidth( 0 );
        sal_Int32 nPos = 0;
        do
        {
            if (nPos > 0)
                aSize.setWidth( ((aSize.Width() / nTabPos) + 1) * nTabPos );

            const OUString aText = rLine.getToken(0, '\t', nPos);
            aSize.AdjustWidth(rDevice.GetTextWidth(aText) );
        }
        while (nPos >= 0);
    }

    return aSize;
}

Size SmViewShell::GetTextSize(OutputDevice const & rDevice, std::u16string_view rText, tools::Long MaxWidth)
{
    Size aSize;
    Size aTextSize;
    if (rText.empty())
        return aTextSize;

    sal_Int32 nPos = 0;
    do
    {
        OUString aLine( o3tl::getToken(rText, 0, '\n', nPos) );
        aLine = aLine.replaceAll("\r", "");

        aSize = GetTextLineSize(rDevice, aLine);

        if (aSize.Width() > MaxWidth)
        {
            do
            {
                OUString aText;
                sal_Int32 m = aLine.getLength();
                sal_Int32 nLen = m;

                for (sal_Int32 n = 0; n < nLen; n++)
                {
                    sal_Unicode cLineChar = aLine[n];
                    if ((cLineChar == ' ') || (cLineChar == '\t'))
                    {
                        aText = aLine.copy(0, n);
                        if (GetTextLineSize(rDevice, aText).Width() < MaxWidth)
                            m = n;
                        else
                            break;
                    }
                }

                aText = aLine.copy(0, m);
                aLine = aLine.replaceAt(0, m, u"");
                aSize = GetTextLineSize(rDevice, aText);
                aTextSize.AdjustHeight(aSize.Height() );
                aTextSize.setWidth( std::clamp(aSize.Width(), aTextSize.Width(), MaxWidth) );

                aLine = comphelper::string::stripStart(aLine, ' ');
                aLine = comphelper::string::stripStart(aLine, '\t');
                aLine = comphelper::string::stripStart(aLine, ' ');
            }
            while (!aLine.isEmpty());
        }
        else
        {
            aTextSize.AdjustHeight(aSize.Height() );
            aTextSize.setWidth( std::max(aTextSize.Width(), aSize.Width()) );
        }
    }
    while (nPos >= 0);

    return aTextSize;
}

void SmViewShell::DrawTextLine(OutputDevice& rDevice, const Point& rPosition, const OUString& rLine)
{
    Point aPoint(rPosition);
    const tools::Long nTabPos = rLine.isEmpty() ? 0 : rDevice.approximate_digit_width() * 8;

    if (nTabPos)
    {
        sal_Int32 nPos = 0;
        do
        {
            if (nPos > 0)
                aPoint.setX( ((aPoint.X() / nTabPos) + 1) * nTabPos );

            OUString aText = rLine.getToken(0, '\t', nPos);
            rDevice.DrawText(aPoint, aText);
            aPoint.AdjustX(rDevice.GetTextWidth(aText) );
        }
        while ( nPos >= 0 );
    }
    else
        rDevice.DrawText(aPoint, rLine);
}

void SmViewShell::DrawText(OutputDevice& rDevice, const Point& rPosition, std::u16string_view rText, sal_uInt16 MaxWidth)
{
    if (rText.empty())
        return;

    Point aPoint(rPosition);
    Size aSize;

    sal_Int32 nPos = 0;
    do
    {
        OUString aLine( o3tl::getToken(rText, 0, '\n', nPos) );
        aLine = aLine.replaceAll("\r", "");
        aSize = GetTextLineSize(rDevice, aLine);
        if (aSize.Width() > MaxWidth)
        {
            do
            {
                OUString aText;
                sal_Int32 m = aLine.getLength();
                sal_Int32 nLen = m;

                for (sal_Int32 n = 0; n < nLen; n++)
                {
                    sal_Unicode cLineChar = aLine[n];
                    if ((cLineChar == ' ') || (cLineChar == '\t'))
                    {
                        aText = aLine.copy(0, n);
                        if (GetTextLineSize(rDevice, aText).Width() < MaxWidth)
                            m = n;
                        else
                            break;
                    }
                }
                aText = aLine.copy(0, m);
                aLine = aLine.replaceAt(0, m, u"");

                DrawTextLine(rDevice, aPoint, aText);
                aPoint.AdjustY(aSize.Height() );

                aLine = comphelper::string::stripStart(aLine, ' ');
                aLine = comphelper::string::stripStart(aLine, '\t');
                aLine = comphelper::string::stripStart(aLine, ' ');
            }
            while (GetTextLineSize(rDevice, aLine).Width() > MaxWidth);

            // print the remaining text
            if (!aLine.isEmpty())
            {
                DrawTextLine(rDevice, aPoint, aLine);
                aPoint.AdjustY(aSize.Height() );
            }
        }
        else
        {
            DrawTextLine(rDevice, aPoint, aLine);
            aPoint.AdjustY(aSize.Height() );
        }
    }
    while ( nPos >= 0 );
}

void SmViewShell::Impl_Print(OutputDevice &rOutDev, const SmPrintUIOptions &rPrintUIOptions, tools::Rectangle aOutRect )
{
    const bool bIsPrintTitle = rPrintUIOptions.getBoolValue( PRTUIOPT_TITLE_ROW, true );
    const bool bIsPrintFrame = rPrintUIOptions.getBoolValue( PRTUIOPT_BORDER, true );
    const bool bIsPrintFormulaText = rPrintUIOptions.getBoolValue( PRTUIOPT_FORMULA_TEXT, true );
    SmPrintSize ePrintSize( static_cast< SmPrintSize >( rPrintUIOptions.getIntValue( PRTUIOPT_PRINT_FORMAT, PRINT_SIZE_NORMAL ) ));
    const sal_uInt16 nZoomFactor = static_cast< sal_uInt16 >(rPrintUIOptions.getIntValue( PRTUIOPT_PRINT_SCALE, 100 ));

    rOutDev.Push();
    rOutDev.SetLineColor( COL_BLACK );

    // output text on top
    if (bIsPrintTitle)
    {
        Size aSize600 (0, 600);
        Size aSize650 (0, 650);
        vcl::Font aFont(FAMILY_DONTKNOW, aSize600);

        aFont.SetAlignment(ALIGN_TOP);
        aFont.SetWeight(WEIGHT_BOLD);
        aFont.SetFontSize(aSize650);
        aFont.SetColor( COL_BLACK );
        rOutDev.SetFont(aFont);

        Size aTitleSize (GetTextSize(rOutDev, GetDoc()->GetTitle(), aOutRect.GetWidth() - 200));

        aFont.SetWeight(WEIGHT_NORMAL);
        aFont.SetFontSize(aSize600);
        rOutDev.SetFont(aFont);

        Size aDescSize (GetTextSize(rOutDev, GetDoc()->GetComment(), aOutRect.GetWidth() - 200));

        if (bIsPrintFrame)
            rOutDev.DrawRect(tools::Rectangle(aOutRect.TopLeft(),
                               Size(aOutRect.GetWidth(), 100 + aTitleSize.Height() + 200 + aDescSize.Height() + 100)));
        aOutRect.AdjustTop(200 );

        // output title
        aFont.SetWeight(WEIGHT_BOLD);
        aFont.SetFontSize(aSize650);
        rOutDev.SetFont(aFont);
        Point aPoint(aOutRect.Left() + (aOutRect.GetWidth() - aTitleSize.Width())  / 2,
                     aOutRect.Top());
        DrawText(rOutDev, aPoint, GetDoc()->GetTitle(),
                 sal::static_int_cast< sal_uInt16 >(aOutRect.GetWidth() - 200));
        aOutRect.AdjustTop(aTitleSize.Height() + 200 );

        // output description
        aFont.SetWeight(WEIGHT_NORMAL);
        aFont.SetFontSize(aSize600);
        rOutDev.SetFont(aFont);
        aPoint.setX( aOutRect.Left() + (aOutRect.GetWidth()  - aDescSize.Width())  / 2 );
        aPoint.setY( aOutRect.Top() );
        DrawText(rOutDev, aPoint, GetDoc()->GetComment(),
                 sal::static_int_cast< sal_uInt16 >(aOutRect.GetWidth() - 200));
        aOutRect.AdjustTop(aDescSize.Height() + 300 );
    }

    // output text on bottom
    if (bIsPrintFormulaText)
    {
        vcl::Font aFont(FAMILY_DONTKNOW, Size(0, 600));
        aFont.SetAlignment(ALIGN_TOP);
        aFont.SetColor( COL_BLACK );

        // get size
        rOutDev.SetFont(aFont);

        Size aSize (GetTextSize(rOutDev, GetDoc()->GetText(), aOutRect.GetWidth() - 200));

        aOutRect.AdjustBottom( -(aSize.Height() + 600) );

        if (bIsPrintFrame)
            rOutDev.DrawRect(tools::Rectangle(aOutRect.BottomLeft(),
                               Size(aOutRect.GetWidth(), 200 + aSize.Height() + 200)));

        Point aPoint (aOutRect.Left() + (aOutRect.GetWidth()  - aSize.Width())  / 2,
                      aOutRect.Bottom() + 300);
        DrawText(rOutDev, aPoint, GetDoc()->GetText(),
                 sal::static_int_cast< sal_uInt16 >(aOutRect.GetWidth() - 200));
        aOutRect.AdjustBottom( -200 );
    }

    if (bIsPrintFrame)
        rOutDev.DrawRect(aOutRect);

    aOutRect.AdjustTop(100 );
    aOutRect.AdjustLeft(100 );
    aOutRect.AdjustBottom( -100 );
    aOutRect.AdjustRight( -100 );

    Size aSize (GetDoc()->GetSize());

    MapMode    OutputMapMode;
    // PDF export should always use PRINT_SIZE_NORMAL ...
    if (!rPrintUIOptions.getBoolValue( "IsPrinter" ) )
        ePrintSize = PRINT_SIZE_NORMAL;
    switch (ePrintSize)
    {
        case PRINT_SIZE_NORMAL:
            OutputMapMode = MapMode(MapUnit::Map100thMM);
            break;

        case PRINT_SIZE_SCALED:
            if (!aSize.IsEmpty())
            {
                Size     OutputSize (rOutDev.LogicToPixel(Size(aOutRect.GetWidth(),
                                                            aOutRect.GetHeight()), MapMode(MapUnit::Map100thMM)));
                Size     GraphicSize (rOutDev.LogicToPixel(aSize, MapMode(MapUnit::Map100thMM)));
                sal_uInt16 nZ = sal::static_int_cast<sal_uInt16>(std::min(tools::Long(Fraction(OutputSize.Width()  * 100, GraphicSize.Width())),
                                                                          tools::Long(Fraction(OutputSize.Height() * 100, GraphicSize.Height()))));
                nZ -= 10;
                Fraction aFraction (std::clamp(nZ, MINZOOM, sal_uInt16(100)));

                OutputMapMode = MapMode(MapUnit::Map100thMM, Point(), aFraction, aFraction);
            }
            else
                OutputMapMode = MapMode(MapUnit::Map100thMM);
            break;

        case PRINT_SIZE_ZOOMED:
        {
            Fraction aFraction( nZoomFactor, 100 );

            OutputMapMode = MapMode(MapUnit::Map100thMM, Point(), aFraction, aFraction);
            break;
        }
    }

    aSize = rOutDev.PixelToLogic(rOutDev.LogicToPixel(aSize, OutputMapMode),
                                   MapMode(MapUnit::Map100thMM));

    Point aPos (aOutRect.Left() + (aOutRect.GetWidth()  - aSize.Width())  / 2,
                aOutRect.Top()  + (aOutRect.GetHeight() - aSize.Height()) / 2);

    aPos     = rOutDev.PixelToLogic(rOutDev.LogicToPixel(aPos, MapMode(MapUnit::Map100thMM)),
                                          OutputMapMode);
    aOutRect   = rOutDev.PixelToLogic(rOutDev.LogicToPixel(aOutRect, MapMode(MapUnit::Map100thMM)),
                                          OutputMapMode);

    rOutDev.SetMapMode(OutputMapMode);
    rOutDev.SetClipRegion(vcl::Region(aOutRect));
    GetDoc()->DrawFormula(rOutDev, aPos);
    rOutDev.SetClipRegion();

    rOutDev.Pop();
}

SfxPrinter* SmViewShell::GetPrinter(bool bCreate)
{
    SmDocShell* pDoc = GetDoc();
    if (pDoc->HasPrinter() || bCreate)
        return pDoc->GetPrinter();
    return nullptr;
}

sal_uInt16 SmViewShell::SetPrinter(SfxPrinter *pNewPrinter, SfxPrinterChangeFlags nDiffFlags )
{
    SfxPrinter *pOld = GetDoc()->GetPrinter();
    if ( pOld && pOld->IsPrinting() )
        return SFX_PRINTERROR_BUSY;

    if ((nDiffFlags & SfxPrinterChangeFlags::PRINTER) == SfxPrinterChangeFlags::PRINTER)
        GetDoc()->SetPrinter( pNewPrinter );

    if ((nDiffFlags & SfxPrinterChangeFlags::OPTIONS) == SfxPrinterChangeFlags::OPTIONS)
    {
        SmModule *pp = SM_MOD();
        pp->GetConfig()->ItemSetToConfig(pNewPrinter->GetOptions());
    }
    return 0;
}

bool SmViewShell::HasPrintOptionsPage() const
{
    return true;
}

std::unique_ptr<SfxTabPage> SmViewShell::CreatePrintOptionsPage(weld::Container* pPage, weld::DialogController* pController,
                                                       const SfxItemSet &rOptions)
{
    return SmPrintOptionsTabPage::Create(pPage, pController, rOptions);
}

SmEditWindow *SmViewShell::GetEditWindow()
{
    SmCmdBoxWrapper* pWrapper = static_cast<SmCmdBoxWrapper*>(
                                    GetViewFrame()->GetChildWindow(SmCmdBoxWrapper::GetChildWindowId()));

    if (pWrapper != nullptr)
    {
        SmEditWindow& rEditWin = pWrapper->GetEditWindow();
        return &rEditWin;
    }

    return nullptr;
}

SmElementsDockingWindow* SmViewShell::GetDockingWindow()
{
    auto eldockwinwrap = GetViewFrame()->GetChildWindow(SmElementsDockingWindowWrapper::GetChildWindowId());
    if(eldockwinwrap)
        return dynamic_cast<SmElementsDockingWindow*>(eldockwinwrap->GetWindow());
    else
        return nullptr;
}

void SmViewShell::SetStatusText(const OUString& rText)
{
    maStatusText = rText;
    GetViewFrame()->GetBindings().Invalidate(SID_TEXTSTATUS);
}

void SmViewShell::ShowError(const SmErrorDesc* pErrorDesc)
{
    assert(GetDoc());
    if (pErrorDesc || nullptr != (pErrorDesc = GetDoc()->GetParser()->GetError()) )
    {
        SetStatusText( pErrorDesc->m_aText );
        GetEditWindow()->MarkError( Point( pErrorDesc->m_pNode->GetColumn(),
                                           pErrorDesc->m_pNode->GetRow()));
    }
}

void SmViewShell::NextError()
{
    assert(GetDoc());
    const SmErrorDesc   *pErrorDesc = GetDoc()->GetParser()->NextError();

    if (pErrorDesc)
        ShowError( pErrorDesc );
}

void SmViewShell::PrevError()
{
    assert(GetDoc());
    const SmErrorDesc   *pErrorDesc = GetDoc()->GetParser()->PrevError();

    if (pErrorDesc)
        ShowError( pErrorDesc );
}

void SmViewShell::Insert( SfxMedium& rMedium )
{
    SmDocShell *pDoc = GetDoc();
    bool bRet = false;

    uno::Reference <embed::XStorage> xStorage = rMedium.GetStorage();
    if (xStorage.is() && xStorage->getElementNames().hasElements())
    {
        if (xStorage->hasByName("content.xml"))
        {
            // is this a fabulous math package ?
            Reference<css::frame::XModel> xModel(pDoc->GetModel());
            SmXMLImportWrapper aEquation(xModel);    //!! modifies the result of pDoc->GetText() !!
            bRet = ERRCODE_NONE == aEquation.Import(rMedium);
        }
    }

    if (!bRet)
        return;

    OUString aText = pDoc->GetText();
    SmEditWindow *pEditWin = GetEditWindow();
    if (pEditWin)
        pEditWin->InsertText( aText );
    else
    {
        SAL_WARN( "starmath", "EditWindow missing" );
    }

    pDoc->Parse();
    pDoc->SetModified();

    SfxBindings &rBnd = GetViewFrame()->GetBindings();
    rBnd.Invalidate(SID_GRAPHIC_SM);
    rBnd.Invalidate(SID_TEXT);
}

void SmViewShell::InsertFrom(SfxMedium &rMedium)
{
    bool bSuccess = false;
    SmDocShell* pDoc = GetDoc();
    SvStream* pStream = rMedium.GetInStream();

    if (pStream)
    {
        const OUString& rFltName = rMedium.GetFilter()->GetFilterName();
        if ( rFltName == MATHML_XML )
        {
            Reference<css::frame::XModel> xModel(pDoc->GetModel());
            SmXMLImportWrapper aEquation(xModel);    //!! modifies the result of pDoc->GetText() !!
            bSuccess = ERRCODE_NONE == aEquation.Import(rMedium);
        }
    }

    if (!bSuccess)
        return;

    OUString aText = pDoc->GetText();
    SmEditWindow *pEditWin = GetEditWindow();
    if (pEditWin)
        pEditWin->InsertText(aText);
    else
        SAL_WARN( "starmath", "EditWindow missing" );

    pDoc->Parse();
    pDoc->SetModified();

    SfxBindings& rBnd = GetViewFrame()->GetBindings();
    rBnd.Invalidate(SID_GRAPHIC_SM);
    rBnd.Invalidate(SID_TEXT);
}

void SmViewShell::Execute(SfxRequest& rReq)
{
    SmEditWindow *pWin = GetEditWindow();

    switch (rReq.GetSlot())
    {
        case SID_FORMULACURSOR:
        {
            SmModule *pp = SM_MOD();

            const SfxItemSet  *pArgs = rReq.GetArgs();
            const SfxPoolItem *pItem;

            bool  bVal;
            if ( pArgs &&
                 SfxItemState::SET == pArgs->GetItemState( SID_FORMULACURSOR, false, &pItem))
                bVal = static_cast<const SfxBoolItem *>(pItem)->GetValue();
            else
                bVal = !pp->GetConfig()->IsShowFormulaCursor();

            pp->GetConfig()->SetShowFormulaCursor(bVal);
            if (!IsInlineEditEnabled())
                GetGraphicWidget().ShowCursor(bVal);
            break;
        }
        case SID_DRAW:
            if (pWin)
            {
                GetDoc()->SetText( pWin->GetText() );
                SetStatusText(OUString());
                ShowError( nullptr );
                GetDoc()->Repaint();
            }
            break;

        case SID_ZOOM_OPTIMAL:
            mxGraphicWindow->ZoomToFitInWindow();
            break;

        case SID_ZOOMIN:
            mxGraphicWindow->SetZoom(mxGraphicWindow->GetZoom() + 25);
            break;

        case SID_ZOOMOUT:
            SAL_WARN_IF( mxGraphicWindow->GetZoom() < 25, "starmath", "incorrect sal_uInt16 argument" );
            mxGraphicWindow->SetZoom(mxGraphicWindow->GetZoom() - 25);
            break;

        case SID_COPYOBJECT:
        {
            //TODO/LATER: does not work because of UNO Tunneling - will be fixed later
            Reference< datatransfer::XTransferable > xTrans( GetDoc()->GetModel(), uno::UNO_QUERY );
            if( xTrans.is() )
            {
                auto pTrans = comphelper::getFromUnoTunnel<TransferableHelper>(xTrans);
                if (pTrans)
                {
                    SmEditWindow *pEditWin = GetEditWindow();
                    pTrans->CopyToClipboard(pEditWin->GetClipboard());
                }
            }
        }
        break;

        case SID_PASTEOBJECT:
        {
            SmEditWindow *pEditWin = GetEditWindow();
            TransferableDataHelper aData(TransferableDataHelper::CreateFromClipboard(pEditWin->GetClipboard()));
            uno::Reference < io::XInputStream > xStrm;
            SotClipboardFormatId nId;
            if( aData.GetTransferable().is() &&
                ( aData.HasFormat( nId = SotClipboardFormatId::EMBEDDED_OBJ ) ||
                  (aData.HasFormat( SotClipboardFormatId::OBJECTDESCRIPTOR ) &&
                   aData.HasFormat( nId = SotClipboardFormatId::EMBED_SOURCE ))))
                xStrm = aData.GetInputStream(nId, OUString());

            if (xStrm.is())
            {
                try
                {
                    uno::Reference < embed::XStorage > xStorage =
                            ::comphelper::OStorageHelper::GetStorageFromInputStream( xStrm, ::comphelper::getProcessComponentContext() );
                    SfxMedium aMedium( xStorage, OUString() );
                    Insert( aMedium );
                    GetDoc()->UpdateText();
                }
                catch (uno::Exception &)
                {
                    SAL_WARN( "starmath", "SmViewShell::Execute (SID_PASTEOBJECT): failed to get storage from input stream" );
                }
            }
        }
        break;


        case SID_CUT:
            if (pWin)
                pWin->Cut();
            break;

        case SID_COPY:
            if (pWin)
            {
                if (pWin->IsAllSelected())
                {
                    GetViewFrame()->GetDispatcher()->ExecuteList(
                                SID_COPYOBJECT, SfxCallMode::RECORD,
                                { new SfxVoidItem(SID_COPYOBJECT) });
                }
                else
                    pWin->Copy();
            }
            break;

        case SID_PASTE:
            {
                bool bCallExec = nullptr == pWin;
                if( !bCallExec )
                {
                    SmEditWindow *pEditWin = GetEditWindow();
                    TransferableDataHelper aDataHelper(
                        TransferableDataHelper::CreateFromClipboard(
                                                    pEditWin->GetClipboard()));

                    if( aDataHelper.GetTransferable().is() &&
                        aDataHelper.HasFormat( SotClipboardFormatId::STRING ))
                        pWin->Paste();
                    else
                        bCallExec = true;
                }
                if( bCallExec )
                {
                    GetViewFrame()->GetDispatcher()->ExecuteList(
                            SID_PASTEOBJECT, SfxCallMode::RECORD,
                            { new SfxVoidItem(SID_PASTEOBJECT) });
                }
            }
            break;

        case SID_DELETE:
            if (pWin)
                pWin->Delete();
            break;

        case SID_SELECT:
            if (pWin)
                pWin->SelectAll();
            break;

        case SID_INSERTCOMMANDTEXT:
        {
            const SfxStringItem& rItem = static_cast<const SfxStringItem&>(rReq.GetArgs()->Get(SID_INSERTCOMMANDTEXT));

            if (pWin && (mbInsertIntoEditWindow || !IsInlineEditEnabled()))
            {
                pWin->InsertText(rItem.GetValue());
            }
            if (IsInlineEditEnabled() && (GetDoc() && !mbInsertIntoEditWindow))
            {
                GetDoc()->GetCursor().InsertCommandText(rItem.GetValue());
                GetGraphicWidget().GrabFocus();
            }
            break;

        }

        case SID_INSERTSPECIAL:
        {
            const SfxStringItem& rItem =
                static_cast<const SfxStringItem&>(rReq.GetArgs()->Get(SID_INSERTSPECIAL));

            if (pWin && (mbInsertIntoEditWindow || !IsInlineEditEnabled()))
                pWin->InsertText(rItem.GetValue());
            if (IsInlineEditEnabled() && (GetDoc() && !mbInsertIntoEditWindow))
                GetDoc()->GetCursor().InsertSpecial(rItem.GetValue());
            break;
        }

        case SID_IMPORT_FORMULA:
        {
            mpRequest.reset(new SfxRequest( rReq ));
            mpDocInserter.reset(new ::sfx2::DocumentInserter(pWin ? pWin->GetFrameWeld() : nullptr,
                              GetDoc()->GetFactory().GetFactoryName()));
            mpDocInserter->StartExecuteModal( LINK( this, SmViewShell, DialogClosedHdl ) );
            break;
        }

        case SID_IMPORT_MATHML_CLIPBOARD:
        {
            SmEditWindow *pEditWin = GetEditWindow();
            TransferableDataHelper aDataHelper(TransferableDataHelper::CreateFromClipboard(pEditWin->GetClipboard()));
            uno::Reference < io::XInputStream > xStrm;
            if  ( aDataHelper.GetTransferable().is() )
            {
                SotClipboardFormatId nId = SotClipboardFormatId::MATHML;
                if (aDataHelper.HasFormat(nId))
                {
                    xStrm = aDataHelper.GetInputStream(nId, "");
                    if (xStrm.is())
                    {
                        SfxMedium aClipboardMedium;
                        aClipboardMedium.GetItemSet(); //generate initial itemset, not sure if necessary
                        std::shared_ptr<const SfxFilter> pMathFilter =
                            SfxFilter::GetFilterByName(MATHML_XML);
                        aClipboardMedium.SetFilter(pMathFilter);
                        aClipboardMedium.setStreamToLoadFrom(xStrm, true /*bIsReadOnly*/);
                        InsertFrom(aClipboardMedium);
                        GetDoc()->UpdateText();
                    }
                }
                else
                {
                    nId = SotClipboardFormatId::STRING;
                    if (aDataHelper.HasFormat(nId))
                    {
                        // In case of FORMAT_STRING no stream exists, need to generate one
                        OUString aString;
                        if (aDataHelper.GetString( nId, aString))
                        {
                            // tdf#117091 force xml declaration to exist
                            if (!aString.startsWith("<?xml"))
                                aString = "<?xml version=\"1.0\"?>\n" + aString;

                            SfxMedium aClipboardMedium;
                            aClipboardMedium.GetItemSet(); //generates initial itemset, not sure if necessary
                            std::shared_ptr<const SfxFilter> pMathFilter =
                                SfxFilter::GetFilterByName(MATHML_XML);
                            aClipboardMedium.SetFilter(pMathFilter);

                            SvMemoryStream aStrm( const_cast<sal_Unicode *>(aString.getStr()), aString.getLength() * sizeof(sal_Unicode), StreamMode::READ);
                            uno::Reference<io::XInputStream> xStrm2( new ::utl::OInputStreamWrapper(aStrm) );
                            aClipboardMedium.setStreamToLoadFrom(xStrm2, true /*bIsReadOnly*/);
                            InsertFrom(aClipboardMedium);
                            GetDoc()->UpdateText();
                        }
                    }
                }
            }
            break;
        }

        case SID_NEXTERR:
            NextError();
            if (pWin)
                pWin->GrabFocus();
            break;

        case SID_PREVERR:
            PrevError();
            if (pWin)
                pWin->GrabFocus();
            break;

        case SID_NEXTMARK:
            if (pWin)
            {
                pWin->SelNextMark();
                pWin->GrabFocus();
            }
            break;

        case SID_PREVMARK:
            if (pWin)
            {
                pWin->SelPrevMark();
                pWin->GrabFocus();
            }
            break;

        case SID_TEXTSTATUS:
        {
            if (rReq.GetArgs() != nullptr)
            {
                const SfxStringItem& rItem =
                    static_cast<const SfxStringItem&>(rReq.GetArgs()->Get(SID_TEXTSTATUS));

                SetStatusText(rItem.GetValue());
            }

            break;
        }

        case SID_GETEDITTEXT:
            if (pWin && !pWin->GetText().isEmpty())
                GetDoc()->SetText( pWin->GetText() );
            break;

        case SID_ATTR_ZOOM:
        {
            if ( !GetViewFrame()->GetFrame().IsInPlace() )
            {
                const SfxItemSet *pSet = rReq.GetArgs();
                if ( pSet )
                {
                    ZoomByItemSet(pSet);
                }
                else
                {
                    SfxItemSetFixed<SID_ATTR_ZOOM, SID_ATTR_ZOOM> aSet( SmDocShell::GetPool() );
                    aSet.Put( SvxZoomItem( SvxZoomType::PERCENT, mxGraphicWindow->GetZoom()));
                    SvxAbstractDialogFactory* pFact = SvxAbstractDialogFactory::Create();
                    ScopedVclPtr<AbstractSvxZoomDialog> xDlg(pFact->CreateSvxZoomDialog(GetViewFrame()->GetWindow().GetFrameWeld(), aSet));
                    xDlg->SetLimits( MINZOOM, MAXZOOM );
                    if (xDlg->Execute() != RET_CANCEL)
                        ZoomByItemSet(xDlg->GetOutputItemSet());
                }
            }
        }
        break;

        case SID_ATTR_ZOOMSLIDER:
        {
            const SfxItemSet *pArgs = rReq.GetArgs();
            const SfxPoolItem* pItem;

            if ( pArgs && SfxItemState::SET == pArgs->GetItemState(SID_ATTR_ZOOMSLIDER, true, &pItem ) )
            {
                const sal_uInt16 nCurrentZoom = static_cast<const SvxZoomSliderItem *>(pItem)->GetValue();
                mxGraphicWindow->SetZoom(nCurrentZoom);
            }
        }
        break;

        case SID_ELEMENTSDOCKINGWINDOW:
        {
            GetViewFrame()->ToggleChildWindow( SmElementsDockingWindowWrapper::GetChildWindowId() );
            GetViewFrame()->GetBindings().Invalidate( SID_ELEMENTSDOCKINGWINDOW );

            rReq.Ignore ();
        }
        break;

        case SID_UNICODE_NOTATION_TOGGLE:
        {
            EditEngine* pEditEngine = nullptr;
            if( pWin )
                pEditEngine = pWin->GetEditEngine();

            EditView* pEditView = nullptr;
            if( pEditEngine )
                pEditView = pEditEngine->GetView();

            if( pEditView )
            {
                const OUString sInput = pEditView->GetSurroundingText();
                ESelection aSel(  pWin->GetSelection() );

                if ( aSel.nStartPos > aSel.nEndPos )
                    aSel.nEndPos = aSel.nStartPos;

                //calculate a valid end-position by reading logical characters
                sal_Int32 nUtf16Pos=0;
                while( (nUtf16Pos < sInput.getLength()) && (nUtf16Pos < aSel.nEndPos) )
                {
                    sInput.iterateCodePoints(&nUtf16Pos);
                    if( nUtf16Pos > aSel.nEndPos )
                        aSel.nEndPos = nUtf16Pos;
                }

                ToggleUnicodeCodepoint aToggle;
                while( nUtf16Pos && aToggle.AllowMoreInput( sInput[nUtf16Pos-1]) )
                    --nUtf16Pos;
                const OUString sReplacement = aToggle.ReplacementString();
                if( !sReplacement.isEmpty() )
                {
                    pEditView->SetSelection( aSel );
                    pEditEngine->UndoActionStart(EDITUNDO_REPLACEALL);
                    aSel.nStartPos = aSel.nEndPos - aToggle.StringToReplace().getLength();
                    pWin->SetSelection( aSel );
                    pEditView->InsertText( sReplacement, true );
                    pEditEngine->UndoActionEnd();
                    pWin->Flush();
                }
            }
        }
        break;

        case SID_SYMBOLS_CATALOGUE:
        {

            // get device used to retrieve the FontList
            SmDocShell *pDoc = GetDoc();
            OutputDevice *pDev = pDoc->GetPrinter();
            if (!pDev || pDev->GetFontFaceCollectionCount() == 0)
                pDev = &SM_MOD()->GetDefaultVirtualDev();
            SAL_WARN_IF( !pDev, "starmath", "device for font list missing" );

            SmModule *pp = SM_MOD();
            SmSymbolDialog aDialog(pWin ? pWin->GetFrameWeld() : nullptr, pDev, pp->GetSymbolManager(), *this);
            aDialog.run();
        }
        break;
    }
    rReq.Done();
}


void SmViewShell::GetState(SfxItemSet &rSet)
{
    SfxWhichIter aIter(rSet);

    SmEditWindow *pEditWin = GetEditWindow();
    for (sal_uInt16 nWh = aIter.FirstWhich(); nWh != 0; nWh = aIter.NextWhich())
    {
        switch (nWh)
        {
        case SID_CUT:
        case SID_COPY:
        case SID_DELETE:
            if (! pEditWin || ! pEditWin->IsSelected())
                rSet.DisableItem(nWh);
            break;

        case SID_PASTE:
            if (pEditWin)
            {
                TransferableDataHelper aDataHelper(
                        TransferableDataHelper::CreateFromClipboard(
                                                        pEditWin->GetClipboard()) );

                mbPasteState = aDataHelper.GetTransferable().is() &&
                 ( aDataHelper.HasFormat( SotClipboardFormatId::STRING ) ||
                   aDataHelper.HasFormat( SotClipboardFormatId::EMBEDDED_OBJ ) ||
                   (aDataHelper.HasFormat( SotClipboardFormatId::OBJECTDESCRIPTOR )
                      && aDataHelper.HasFormat( SotClipboardFormatId::EMBED_SOURCE )));
            }
            if( !mbPasteState )
                rSet.DisableItem( nWh );
            break;

        case SID_ATTR_ZOOM:
            rSet.Put(SvxZoomItem( SvxZoomType::PERCENT, mxGraphicWindow->GetZoom()));
            [[fallthrough]];
        case SID_ZOOMIN:
        case SID_ZOOMOUT:
        case SID_ZOOM_OPTIMAL:
            if ( GetViewFrame()->GetFrame().IsInPlace() )
                rSet.DisableItem( nWh );
            break;

        case SID_ATTR_ZOOMSLIDER :
            {
                const sal_uInt16 nCurrentZoom = mxGraphicWindow->GetZoom();
                SvxZoomSliderItem aZoomSliderItem( nCurrentZoom, MINZOOM, MAXZOOM );
                aZoomSliderItem.AddSnappingPoint( 100 );
                rSet.Put( aZoomSliderItem );
            }
        break;

        case SID_NEXTERR:
        case SID_PREVERR:
        case SID_NEXTMARK:
        case SID_PREVMARK:
        case SID_DRAW:
        case SID_SELECT:
            if (! pEditWin || pEditWin->IsEmpty())
                rSet.DisableItem(nWh);
            break;

        case SID_TEXTSTATUS:
            {
                rSet.Put(SfxStringItem(nWh, maStatusText));
            }
            break;

        case SID_FORMULACURSOR:
            {
                SmModule *pp = SM_MOD();
                rSet.Put(SfxBoolItem(nWh, pp->GetConfig()->IsShowFormulaCursor()));
            }
            break;
        case SID_ELEMENTSDOCKINGWINDOW:
            {
                bool bState = false;
                SfxChildWindow *pChildWnd = GetViewFrame()->
                        GetChildWindow( SmElementsDockingWindowWrapper::GetChildWindowId() );
                if (pChildWnd  &&  pChildWnd->GetWindow()->IsVisible())
                    bState = true;
                rSet.Put(SfxBoolItem(SID_ELEMENTSDOCKINGWINDOW, bState));
            }
            break;
        }
    }
}

namespace
{
class SmController : public SfxBaseController
{
public:
    SmController(SfxViewShell& rViewShell)
        : SfxBaseController(&rViewShell)
        , mpSelectionChangeHandler(new svx::sidebar::SelectionChangeHandler(
              GetContextName, this, vcl::EnumContext::Context::Math))
    {
        mpSelectionChangeHandler->Connect();
        rViewShell.SetContextName(GetContextName());
    }
    ~SmController() { mpSelectionChangeHandler->Disconnect(); }

    // css::frame::XController
    void SAL_CALL attachFrame(const css::uno::Reference<css::frame::XFrame>& xFrame) override
    {
        SfxBaseController::attachFrame(xFrame);

        mpSelectionChangeHandler->selectionChanged({}); // Installs the correct context
    }

private:
    static OUString GetContextName() { return "Math"; } // Static constant for now

    rtl::Reference<svx::sidebar::SelectionChangeHandler> mpSelectionChangeHandler;
};
}

SmViewShell::SmViewShell(SfxViewFrame *pFrame_, SfxViewShell *)
    : SfxViewShell(pFrame_, SfxViewShellFlags::HAS_PRINTOPTIONS)
    , mxGraphicWindow(VclPtr<SmGraphicWindow>::Create(*this))
    , maGraphicController(mxGraphicWindow->GetGraphicWidget(), SID_GRAPHIC_SM, pFrame_->GetBindings())
    , mbPasteState(false)
    , mbInsertIntoEditWindow(false)
{
    SetStatusText(OUString());
    SetWindow(mxGraphicWindow.get());
    SfxShell::SetName("SmView");
    SfxShell::SetUndoManager( &GetDoc()->GetEditEngine().GetUndoManager() );
    SetController(new SmController(*this));
}

SmViewShell::~SmViewShell()
{
    //!! this view shell is not active anymore !!
    // Thus 'SmGetActiveView' will give a 0 pointer.
    // Thus we need to supply this view as argument
    SmEditWindow *pEditWin = GetEditWindow();
    if (pEditWin)
        pEditWin->DeleteEditView();
    mxGraphicWindow.disposeAndClear();
}

void SmViewShell::Deactivate( bool bIsMDIActivate )
{
    SmEditWindow *pEdit = GetEditWindow();
    if ( pEdit )
        pEdit->Flush();

    SfxViewShell::Deactivate( bIsMDIActivate );
}

void SmViewShell::Activate( bool bIsMDIActivate )
{
    SfxViewShell::Activate( bIsMDIActivate );

    if (comphelper::LibreOfficeKit::isActive())
    {
        // In LOK, activate in-place editing
        GetGraphicWidget().GrabFocus();
    }
    else if (SmEditWindow *pEdit = GetEditWindow())
    {
        //! Since there is no way to be informed if a "drag and drop"
        //! event has taken place, we call SetText here in order to
        //! synchronize the GraphicWindow display with the text in the
        //! EditEngine.
        SmDocShell *pDoc = GetDoc();
        pDoc->SetText( pDoc->GetEditEngine().GetText() );

        if ( bIsMDIActivate )
            pEdit->GrabFocus();
    }
}

IMPL_LINK( SmViewShell, DialogClosedHdl, sfx2::FileDialogHelper*, _pFileDlg, void )
{
    assert(_pFileDlg && "SmViewShell::DialogClosedHdl(): no file dialog");
    assert(mpDocInserter && "ScDocShell::DialogClosedHdl(): no document inserter");

    if ( ERRCODE_NONE == _pFileDlg->GetError() )
    {
        std::unique_ptr<SfxMedium> pMedium = mpDocInserter->CreateMedium();

        if ( pMedium )
        {
            if ( pMedium->IsStorage() )
                Insert( *pMedium );
            else
                InsertFrom( *pMedium );
            pMedium.reset();

            SmDocShell* pDoc = GetDoc();
            pDoc->UpdateText();
            pDoc->ArrangeFormula();
            pDoc->Repaint();
            // adjust window, repaint, increment ModifyCount,...
            GetViewFrame()->GetBindings().Invalidate(SID_GRAPHIC_SM);
        }
    }

    mpRequest->SetReturnValue( SfxBoolItem( mpRequest->GetSlot(), true ) );
    mpRequest->Done();
}

void SmViewShell::Notify( SfxBroadcaster& , const SfxHint& rHint )
{
    switch( rHint.GetId() )
    {
        case SfxHintId::ModeChanged:
        case SfxHintId::DocChanged:
            GetViewFrame()->GetBindings().InvalidateAll(false);
        break;
        default:
        break;
    }
}

bool SmViewShell::IsInlineEditEnabled()
{
    return comphelper::LibreOfficeKit::isActive()
           || officecfg::Office::Common::Misc::ExperimentalMode::get();
}

void SmViewShell::ZoomByItemSet(const SfxItemSet *pSet)
{
    assert(pSet);
    const SvxZoomItem &rZoom = pSet->Get(SID_ATTR_ZOOM);
    switch( rZoom.GetType() )
    {
        case SvxZoomType::PERCENT:
            mxGraphicWindow->SetZoom(sal::static_int_cast<sal_uInt16>(rZoom.GetValue ()));
            break;

        case SvxZoomType::OPTIMAL:
            mxGraphicWindow->ZoomToFitInWindow();
            break;

        case SvxZoomType::PAGEWIDTH:
        case SvxZoomType::WHOLEPAGE:
        {
            const MapMode aMap( MapUnit::Map100thMM );
            SfxPrinter *pPrinter = GetPrinter( true );
            tools::Rectangle  OutputRect(Point(), pPrinter->GetOutputSize());
            Size       OutputSize(pPrinter->LogicToPixel(Size(OutputRect.GetWidth(),
                                                              OutputRect.GetHeight()), aMap));
            Size       GraphicSize(pPrinter->LogicToPixel(GetDoc()->GetSize(), aMap));
            sal_uInt16 nZ = sal::static_int_cast<sal_uInt16>(std::min(tools::Long(Fraction(OutputSize.Width()  * 100, GraphicSize.Width())),
                                                                      tools::Long(Fraction(OutputSize.Height() * 100, GraphicSize.Height()))));
            mxGraphicWindow->SetZoom(nZ);
            break;
        }
        default:
            break;
    }
}

/* vim:set shiftwidth=4 softtabstop=4 expandtab: */