Adding upstream version 4:24.2.0.upstream/4%24.2.0

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

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 0000000000..42316fa1fa
--- /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: */