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// 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/fee/fde_txtedtparag.h"
#include "xfa/fee/fde_txtedtbuf.h"
#include "xfa/fee/fde_txtedtengine.h"
#include "xfa/fee/fx_wordbreak/fx_wordbreak.h"
#include "xfa/fee/ifde_txtedtengine.h"
#include "xfa/fgas/layout/fgas_textbreak.h"
CFDE_TxtEdtParag::CFDE_TxtEdtParag(CFDE_TxtEdtEngine* pEngine)
: m_nCharStart(0),
m_nCharCount(0),
m_nLineCount(0),
m_lpData(NULL),
m_pEngine(pEngine) {
ASSERT(m_pEngine);
}
CFDE_TxtEdtParag::~CFDE_TxtEdtParag() {
if (m_lpData != NULL) {
FX_Free(m_lpData);
}
}
void CFDE_TxtEdtParag::LoadParag() {
if (m_lpData != NULL) {
((int32_t*)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 == NULL) {
m_lpData = FX_Alloc(int32_t, nLineCount + 1);
} else {
m_lpData = FX_Realloc(int32_t, m_lpData, (nLineCount + 1));
}
int32_t* pIntArr = (int32_t*)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() {
ASSERT(m_lpData != NULL);
((int32_t*)m_lpData)[0]--;
ASSERT(((int32_t*)m_lpData)[0] >= 0);
if (((int32_t*)m_lpData)[0] == 0) {
FX_Free(m_lpData);
m_lpData = NULL;
}
}
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 = (int32_t*)m_lpData;
ASSERT(nLineIndex < m_nLineCount);
nStart = m_nCharStart;
pLineBaseArr++;
for (int32_t i = 0; i < nLineIndex; i++) {
nStart += *pLineBaseArr;
pLineBaseArr++;
}
nCount = *pLineBaseArr;
}
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