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Diffstat (limited to '')
| -rw-r--r-- | editeng/source/outliner/overflowingtxt.cxx | 227 |
1 files changed, 227 insertions, 0 deletions
diff --git a/editeng/source/outliner/overflowingtxt.cxx b/editeng/source/outliner/overflowingtxt.cxx new file mode 100644 index 000000000..42316fa1f --- /dev/null +++ b/editeng/source/outliner/overflowingtxt.cxx @@ -0,0 +1,227 @@ +/* -*- 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 <rtl/ustring.hxx> +#include <sal/log.hxx> + +#include <editeng/overflowingtxt.hxx> +#include <editeng/outliner.hxx> +#include <editeng/outlobj.hxx> +#include <editeng/editeng.hxx> +#include <editeng/editobj.hxx> +#include <editeng/editdata.hxx> + +#include <editdoc.hxx> +#include <utility> + + +std::optional<OutlinerParaObject> TextChainingUtils::JuxtaposeParaObject( + css::uno::Reference< css::datatransfer::XTransferable > const & xOverflowingContent, + Outliner *pOutl, + OutlinerParaObject const *pNextPObj) +{ + if (!pNextPObj) { + pOutl->SetToEmptyText(); + } else { + pOutl->SetText(*pNextPObj); + } + + // Special case: if only empty text remove it at the end + bool bOnlyOneEmptyPara = !pNextPObj || + (pOutl->GetParagraphCount() == 1 && + pNextPObj->GetTextObject().GetText(0).isEmpty()); + + EditEngine &rEditEngine = const_cast<EditEngine &>(pOutl->GetEditEngine()); + + // XXX: this code should be moved in Outliner directly + // creating Outliner::InsertText(...transferable...) + EditSelection aStartSel(rEditEngine.CreateSelection(ESelection(0,0))); + EditSelection aNewSel = rEditEngine.InsertText(xOverflowingContent, + OUString(), + aStartSel.Min(), + true); + + if (!bOnlyOneEmptyPara) { + // Separate Paragraphs + rEditEngine.InsertParaBreak(aNewSel); + } + + + return pOutl->CreateParaObject(); +} + +std::optional<OutlinerParaObject> TextChainingUtils::DeeplyMergeParaObject( + css::uno::Reference< css::datatransfer::XTransferable > const & xOverflowingContent, + Outliner *pOutl, + OutlinerParaObject const *pNextPObj) +{ + if (!pNextPObj) { + pOutl->SetToEmptyText(); + } else { + pOutl->SetText(*pNextPObj); + } + + EditEngine &rEditEngine = const_cast<EditEngine &>(pOutl->GetEditEngine()); + + // XXX: this code should be moved in Outliner directly + // creating Outliner::InsertText(...transferable...) + EditSelection aStartSel(rEditEngine.CreateSelection(ESelection(0,0))); + // We don't need to mark the selection + // EditSelection aNewSel = + rEditEngine.InsertText(xOverflowingContent, + OUString(), + aStartSel.Min(), + true); + + return pOutl->CreateParaObject(); +} + +css::uno::Reference< css::datatransfer::XTransferable > TextChainingUtils::CreateTransferableFromText(Outliner const *pOutl) +{ + const EditEngine &rEditEngine = pOutl->GetEditEngine(); + sal_Int32 nLastPara = pOutl->GetParagraphCount()-1; + ESelection aWholeTextSel(0, 0, nLastPara, rEditEngine.GetTextLen(nLastPara)); + + return rEditEngine.CreateTransferable(aWholeTextSel); +} + + + +OverflowingText::OverflowingText(css::uno::Reference< css::datatransfer::XTransferable > xOverflowingContent) : + mxOverflowingContent(std::move(xOverflowingContent)) +{ + +} + + + +NonOverflowingText::NonOverflowingText(const ESelection &aSel, bool bLastParaInterrupted) + : maContentSel(aSel) + , mbLastParaInterrupted(bLastParaInterrupted) +{ +} + +bool NonOverflowingText::IsLastParaInterrupted() const +{ + return mbLastParaInterrupted; +} + + +std::optional<OutlinerParaObject> NonOverflowingText::RemoveOverflowingText(Outliner *pOutliner) const +{ + pOutliner->QuickDelete(maContentSel); + SAL_INFO("editeng.chaining", "Deleting selection from (Para: " << maContentSel.nStartPara + << ", Pos: " << maContentSel.nStartPos << ") to (Para: " << maContentSel.nEndPara + << ", Pos: " << maContentSel.nEndPos << ")"); + return pOutliner->CreateParaObject(); +} + +ESelection NonOverflowingText::GetOverflowPointSel() const +{ + //return getLastPositionSel(mpContentTextObj); + + // return the starting point of the selection we are removing + return ESelection(maContentSel.nStartPara, maContentSel.nStartPos); //XXX +} + +// The equivalent of ToParaObject for OverflowingText. Here we are prepending the overflowing text to the old dest box's text +// XXX: In a sense a better name for OverflowingText and NonOverflowingText are respectively DestLinkText and SourceLinkText +std::optional<OutlinerParaObject> OverflowingText::JuxtaposeParaObject(Outliner *pOutl, OutlinerParaObject const *pNextPObj) +{ + return TextChainingUtils::JuxtaposeParaObject(mxOverflowingContent, pOutl, pNextPObj); +} + +std::optional<OutlinerParaObject> OverflowingText::DeeplyMergeParaObject(Outliner *pOutl, OutlinerParaObject const *pNextPObj) +{ + return TextChainingUtils::DeeplyMergeParaObject(mxOverflowingContent, pOutl, pNextPObj); +} + + +OFlowChainedText::OFlowChainedText(Outliner const *pOutl, bool bIsDeepMerge) +{ + mpOverflowingTxt = pOutl->GetOverflowingText(); + mpNonOverflowingTxt = pOutl->GetNonOverflowingText(); + + mbIsDeepMerge = bIsDeepMerge; +} + +OFlowChainedText::~OFlowChainedText() +{ +} + + +ESelection OFlowChainedText::GetOverflowPointSel() const +{ + return mpNonOverflowingTxt->GetOverflowPointSel(); +} + +std::optional<OutlinerParaObject> OFlowChainedText::InsertOverflowingText(Outliner *pOutliner, OutlinerParaObject const *pTextToBeMerged) +{ + // Just return the roughly merged paras for now + if (!mpOverflowingTxt) + return std::nullopt; + + if (mbIsDeepMerge) { + SAL_INFO("editeng.chaining", "[TEXTCHAINFLOW - OF] Deep merging paras" ); + return mpOverflowingTxt->DeeplyMergeParaObject(pOutliner, pTextToBeMerged ); + } else { + SAL_INFO("editeng.chaining", "[TEXTCHAINFLOW - OF] Juxtaposing paras" ); + return mpOverflowingTxt->JuxtaposeParaObject(pOutliner, pTextToBeMerged ); + } +} + + +std::optional<OutlinerParaObject> OFlowChainedText::RemoveOverflowingText(Outliner *pOutliner) +{ + if (!mpNonOverflowingTxt) + return std::nullopt; + + return mpNonOverflowingTxt->RemoveOverflowingText(pOutliner); +} + +bool OFlowChainedText::IsLastParaInterrupted() const +{ + return mpNonOverflowingTxt->IsLastParaInterrupted(); +} + + + +UFlowChainedText::UFlowChainedText(Outliner const *pOutl, bool bIsDeepMerge) +{ + mxUnderflowingTxt = TextChainingUtils::CreateTransferableFromText(pOutl); + mbIsDeepMerge = bIsDeepMerge; +} + +std::optional<OutlinerParaObject> UFlowChainedText::CreateMergedUnderflowParaObject(Outliner *pOutl, OutlinerParaObject const *pNextLinkWholeText) +{ + std::optional<OutlinerParaObject> pNewText; + + if (mbIsDeepMerge) { + SAL_INFO("editeng.chaining", "[TEXTCHAINFLOW - UF] Deep merging paras" ); + pNewText = TextChainingUtils::DeeplyMergeParaObject(mxUnderflowingTxt, pOutl, pNextLinkWholeText); + } else { + // NewTextForCurBox = Txt(CurBox) ++ Txt(NextBox) + SAL_INFO("editeng.chaining", "[TEXTCHAINFLOW - UF] Juxtaposing paras" ); + pNewText = TextChainingUtils::JuxtaposeParaObject(mxUnderflowingTxt, pOutl, pNextLinkWholeText); + } + + return pNewText; + +} +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |