| // Copyright 2014 PDFium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com |
| |
| #include "xfa/fde/cfde_txtedtparag.h" |
| |
| #include "xfa/fde/cfde_txtedtbuf.h" |
| #include "xfa/fde/cfde_txtedtbufiter.h" |
| #include "xfa/fde/cfde_txtedtengine.h" |
| #include "xfa/fde/ifde_txtedtengine.h" |
| #include "xfa/fgas/layout/fgas_textbreak.h" |
| #include "xfa/fde/ifx_chariter.h" |
| |
| CFDE_TxtEdtParag::CFDE_TxtEdtParag(CFDE_TxtEdtEngine* pEngine) |
| : m_nCharStart(0), |
| m_nCharCount(0), |
| m_nLineCount(0), |
| m_lpData(nullptr), |
| m_pEngine(pEngine) { |
| ASSERT(m_pEngine); |
| } |
| |
| CFDE_TxtEdtParag::~CFDE_TxtEdtParag() { |
| if (m_lpData) |
| FX_Free(m_lpData); |
| } |
| |
| void CFDE_TxtEdtParag::LoadParag() { |
| if (m_lpData) { |
| m_lpData[0]++; |
| return; |
| } |
| CFX_TxtBreak* pTxtBreak = m_pEngine->GetTextBreak(); |
| CFDE_TxtEdtBuf* pTxtBuf = m_pEngine->GetTextBuf(); |
| const FDE_TXTEDTPARAMS* pParam = m_pEngine->GetEditParams(); |
| FX_WCHAR wcAlias = 0; |
| if (pParam->dwMode & FDE_TEXTEDITMODE_Password) { |
| wcAlias = m_pEngine->GetAliasChar(); |
| } |
| std::unique_ptr<IFX_CharIter> pIter( |
| new CFDE_TxtEdtBufIter(static_cast<CFDE_TxtEdtBuf*>(pTxtBuf), wcAlias)); |
| pIter->SetAt(m_nCharStart); |
| int32_t nEndIndex = m_nCharStart + m_nCharCount; |
| CFX_ArrayTemplate<int32_t> LineBaseArr; |
| FX_BOOL bReload = FALSE; |
| uint32_t dwBreakStatus = FX_TXTBREAK_None; |
| do { |
| if (bReload) { |
| dwBreakStatus = pTxtBreak->EndBreak(FX_TXTBREAK_ParagraphBreak); |
| } else { |
| FX_WCHAR wAppend = pIter->GetChar(); |
| dwBreakStatus = pTxtBreak->AppendChar(wAppend); |
| } |
| if (pIter->GetAt() + 1 == nEndIndex && |
| dwBreakStatus < FX_TXTBREAK_LineBreak) { |
| dwBreakStatus = pTxtBreak->EndBreak(FX_TXTBREAK_ParagraphBreak); |
| } |
| if (dwBreakStatus > FX_TXTBREAK_PieceBreak) { |
| int32_t nCount = pTxtBreak->CountBreakPieces(); |
| int32_t nTotal = 0; |
| for (int32_t j = 0; j < nCount; j++) { |
| const CFX_TxtPiece* Piece = pTxtBreak->GetBreakPiece(j); |
| nTotal += Piece->GetLength(); |
| } |
| LineBaseArr.Add(nTotal); |
| pTxtBreak->ClearBreakPieces(); |
| } |
| if ((pIter->GetAt() + 1 == nEndIndex) && |
| (dwBreakStatus == FX_TXTBREAK_LineBreak)) { |
| bReload = TRUE; |
| pIter->Next(TRUE); |
| } |
| } while (pIter->Next(FALSE) && (pIter->GetAt() < nEndIndex)); |
| pTxtBreak->EndBreak(FX_TXTBREAK_ParagraphBreak); |
| pTxtBreak->ClearBreakPieces(); |
| int32_t nLineCount = LineBaseArr.GetSize(); |
| m_nLineCount = nLineCount; |
| if (m_lpData) { |
| m_lpData = FX_Realloc(int32_t, m_lpData, nLineCount + 1); |
| } else { |
| m_lpData = FX_Alloc(int32_t, nLineCount + 1); |
| } |
| int32_t* pIntArr = m_lpData; |
| pIntArr[0] = 1; |
| m_nLineCount = nLineCount; |
| pIntArr++; |
| for (int32_t j = 0; j < nLineCount; j++, pIntArr++) { |
| *pIntArr = LineBaseArr[j]; |
| } |
| LineBaseArr.RemoveAll(); |
| } |
| |
| void CFDE_TxtEdtParag::UnloadParag() { |
| m_lpData[0]--; |
| ASSERT(m_lpData[0] >= 0); |
| if (m_lpData[0] == 0) { |
| FX_Free(m_lpData); |
| m_lpData = nullptr; |
| } |
| } |
| |
| void CFDE_TxtEdtParag::CalcLines() { |
| CFX_TxtBreak* pTxtBreak = m_pEngine->GetTextBreak(); |
| CFDE_TxtEdtBuf* pTxtBuf = m_pEngine->GetTextBuf(); |
| int32_t nCount = 0; |
| uint32_t dwBreakStatus = FX_TXTBREAK_None; |
| int32_t nEndIndex = m_nCharStart + m_nCharCount; |
| std::unique_ptr<IFX_CharIter> pIter( |
| new CFDE_TxtEdtBufIter(static_cast<CFDE_TxtEdtBuf*>(pTxtBuf))); |
| pIter->SetAt(m_nCharStart); |
| FX_BOOL bReload = FALSE; |
| do { |
| if (bReload) { |
| dwBreakStatus = pTxtBreak->EndBreak(FX_TXTBREAK_ParagraphBreak); |
| } else { |
| FX_WCHAR wAppend = pIter->GetChar(); |
| dwBreakStatus = pTxtBreak->AppendChar(wAppend); |
| } |
| if (pIter->GetAt() + 1 == nEndIndex && |
| dwBreakStatus < FX_TXTBREAK_LineBreak) { |
| dwBreakStatus = pTxtBreak->EndBreak(FX_TXTBREAK_ParagraphBreak); |
| } |
| if (dwBreakStatus > FX_TXTBREAK_PieceBreak) { |
| nCount++; |
| pTxtBreak->ClearBreakPieces(); |
| } |
| if ((pIter->GetAt() + 1 == nEndIndex) && |
| (dwBreakStatus == FX_TXTBREAK_LineBreak)) { |
| bReload = TRUE; |
| pIter->Next(TRUE); |
| } |
| } while (pIter->Next(FALSE) && (pIter->GetAt() < nEndIndex)); |
| pTxtBreak->EndBreak(FX_TXTBREAK_ParagraphBreak); |
| pTxtBreak->ClearBreakPieces(); |
| m_nLineCount = nCount; |
| } |
| |
| void CFDE_TxtEdtParag::GetLineRange(int32_t nLineIndex, |
| int32_t& nStart, |
| int32_t& nCount) const { |
| int32_t* pLineBaseArr = m_lpData; |
| ASSERT(nLineIndex < m_nLineCount); |
| nStart = m_nCharStart; |
| pLineBaseArr++; |
| for (int32_t i = 0; i < nLineIndex; i++) { |
| nStart += *pLineBaseArr; |
| pLineBaseArr++; |
| } |
| nCount = *pLineBaseArr; |
| } |