sandy
/
PL286
1
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity
You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
1 Commit
1 Branch
0 Tags
18 GiB
Tree: 99da0f2c72
Branches Tags
${ item.name }
Create tag ${ searchTerm }
Create branch ${ searchTerm }
from '99da0f2c72'
${ noResults }
PL286/external/pdfium/xfa/fde/cfde_txtedtpage.cpp

473 lines
15 KiB
Raw Blame History

// 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_txtedtpage.h"
#include <algorithm>
#include "third_party/base/ptr_util.h"
#include "third_party/base/stl_util.h"
#include "xfa/fde/cfde_txtedtbuf.h"
#include "xfa/fde/cfde_txtedtengine.h"
#include "xfa/fde/cfde_txtedtparag.h"
#include "xfa/fde/cfde_txtedttextset.h"
#include "xfa/fde/cfx_wordbreak.h"
#include "xfa/fde/ifde_txtedtengine.h"
#include "xfa/fde/ifde_txtedtpage.h"
namespace {
const double kTolerance = 0.1f;
} // namespace
IFDE_TxtEdtPage* IFDE_TxtEdtPage::Create(CFDE_TxtEdtEngine* pEngine,
int32_t nIndex) {
return new CFDE_TxtEdtPage(pEngine, nIndex);
}
CFDE_TxtEdtPage::CFDE_TxtEdtPage(CFDE_TxtEdtEngine* pEngine, int32_t nPageIndex)
: m_pEditEngine(pEngine),
m_pBgnParag(nullptr),
m_pEndParag(nullptr),
m_nRefCount(0),
m_nPageStart(-1),
m_nCharCount(0),
m_nPageIndex(nPageIndex),
m_bLoaded(false) {
}
CFDE_TxtEdtPage::~CFDE_TxtEdtPage() {}
CFDE_TxtEdtEngine* CFDE_TxtEdtPage::GetEngine() const {
return m_pEditEngine;
}
FDE_VISUALOBJTYPE CFDE_TxtEdtPage::GetType() {
return FDE_VISUALOBJ_Text;
}
CFX_RectF CFDE_TxtEdtPage::GetRect(const FDE_TEXTEDITPIECE& hVisualObj) {
return CFX_RectF();
}
int32_t CFDE_TxtEdtPage::GetCharRect(int32_t nIndex,
CFX_RectF& rect,
bool bBBox) const {
ASSERT(m_nRefCount > 0);
ASSERT(nIndex >= 0 && nIndex < m_nCharCount);
if (m_nRefCount < 1)
return 0;
for (const auto& piece : m_Pieces) {
if (nIndex >= piece.nStart && nIndex < piece.nStart + piece.nCount) {
std::vector<CFX_RectF> rectArr = m_pTextSet->GetCharRects(&piece, bBBox);
rect = rectArr[nIndex - piece.nStart];
return piece.nBidiLevel;
}
}
ASSERT(0);
return 0;
}
int32_t CFDE_TxtEdtPage::GetCharIndex(const CFX_PointF& fPoint, bool& bBefore) {
CFX_PointF ptF = fPoint;
NormalizePt2Rect(ptF, m_rtPageContents, kTolerance);
int32_t nCount = pdfium::CollectionSize<int32_t>(m_Pieces);
CFX_RectF rtLine;
int32_t nBgn = 0;
int32_t nEnd = 0;
bool bInLine = false;
int32_t i = 0;
for (i = 0; i < nCount; i++) {
const FDE_TEXTEDITPIECE* pPiece = &m_Pieces[i];
if (!bInLine &&
(pPiece->rtPiece.top <= ptF.y && pPiece->rtPiece.bottom() > ptF.y)) {
nBgn = nEnd = i;
rtLine = pPiece->rtPiece;
bInLine = true;
} else if (bInLine) {
if (pPiece->rtPiece.bottom() <= ptF.y || pPiece->rtPiece.top > ptF.y) {
nEnd = i - 1;
break;
} else {
rtLine.Union(pPiece->rtPiece);
}
}
}
NormalizePt2Rect(ptF, rtLine, kTolerance);
int32_t nCaret = 0;
FDE_TEXTEDITPIECE* pPiece = nullptr;
for (i = nBgn; i <= nEnd; i++) {
pPiece = &m_Pieces[i];
nCaret = m_nPageStart + pPiece->nStart;
if (pPiece->rtPiece.Contains(ptF)) {
std::vector<CFX_RectF> rectArr = m_pTextSet->GetCharRects(pPiece, false);
int32_t nRtCount = pdfium::CollectionSize<int32_t>(rectArr);
for (int32_t j = 0; j < nRtCount; j++) {
if (rectArr[j].Contains(ptF)) {
nCaret = m_nPageStart + pPiece->nStart + j;
if (nCaret >= m_pEditEngine->GetTextBufLength()) {
bBefore = true;
return m_pEditEngine->GetTextBufLength();
}
FX_WCHAR wChar = m_pEditEngine->GetTextBuf()->GetCharByIndex(nCaret);
if (wChar == L'\n' || wChar == L'\r') {
if (wChar == L'\n') {
if (m_pEditEngine->GetTextBuf()->GetCharByIndex(nCaret - 1) ==
L'\r') {
nCaret--;
}
}
bBefore = true;
return nCaret;
}
if (ptF.x > ((rectArr[j].left + rectArr[j].right()) / 2)) {
bBefore = FX_IsOdd(pPiece->nBidiLevel);
} else {
bBefore = !FX_IsOdd(pPiece->nBidiLevel);
}
return nCaret;
}
}
}
}
bBefore = true;
return nCaret;
}
int32_t CFDE_TxtEdtPage::GetCharStart() const {
return m_nPageStart;
}
int32_t CFDE_TxtEdtPage::GetCharCount() const {
return m_nCharCount;
}
int32_t CFDE_TxtEdtPage::GetDisplayPos(const CFX_RectF& rtClip,
FXTEXT_CHARPOS*& pCharPos,
CFX_RectF* pBBox) const {
pCharPos = FX_Alloc(FXTEXT_CHARPOS, m_nCharCount);
int32_t nCharPosCount = 0;
FXTEXT_CHARPOS* pos = pCharPos;
for (const auto& piece : m_Pieces) {
if (!rtClip.IntersectWith(m_pTextSet->GetRect(piece)))
continue;
int32_t nCount = m_pTextSet->GetDisplayPos(piece, pos, false);
nCharPosCount += nCount;
pos += nCount;
}
if ((nCharPosCount * 5) < (m_nCharCount << 2)) {
FXTEXT_CHARPOS* pTemp = FX_Alloc(FXTEXT_CHARPOS, nCharPosCount);
FXSYS_memcpy(pTemp, pCharPos, sizeof(FXTEXT_CHARPOS) * nCharPosCount);
FX_Free(pCharPos);
pCharPos = pTemp;
}
return nCharPosCount;
}
void CFDE_TxtEdtPage::CalcRangeRectArray(
int32_t nStart,
int32_t nCount,
std::vector<CFX_RectF>* pRectFArr) const {
int32_t nEnd = nStart + nCount - 1;
bool bInRange = false;
for (const auto& piece : m_Pieces) {
if (!bInRange) {
if (nStart >= piece.nStart && nStart < piece.nStart + piece.nCount) {
int32_t nRangeEnd = piece.nCount - 1;
bool bEnd = false;
if (nEnd >= piece.nStart && nEnd < piece.nStart + piece.nCount) {
nRangeEnd = nEnd - piece.nStart;
bEnd = true;
}
std::vector<CFX_RectF> rcArr = m_pTextSet->GetCharRects(&piece, false);
CFX_RectF rectPiece = rcArr[nStart - piece.nStart];
rectPiece.Union(rcArr[nRangeEnd]);
pRectFArr->push_back(rectPiece);
if (bEnd)
return;
bInRange = true;
}
} else {
if (nEnd >= piece.nStart && nEnd < piece.nStart + piece.nCount) {
std::vector<CFX_RectF> rcArr = m_pTextSet->GetCharRects(&piece, false);
CFX_RectF rectPiece = rcArr[0];
rectPiece.Union(rcArr[nEnd - piece.nStart]);
pRectFArr->push_back(rectPiece);
return;
}
pRectFArr->push_back(piece.rtPiece);
}
}
}
int32_t CFDE_TxtEdtPage::SelectWord(const CFX_PointF& fPoint, int32_t& nCount) {
if (m_nRefCount < 0) {
return -1;
}
CFDE_TxtEdtBuf* pBuf = m_pEditEngine->GetTextBuf();
bool bBefore;
int32_t nIndex = GetCharIndex(fPoint, bBefore);
if (nIndex == m_pEditEngine->GetTextBufLength()) {
nIndex = m_pEditEngine->GetTextBufLength() - 1;
}
if (nIndex < 0) {
return -1;
}
std::unique_ptr<CFX_WordBreak> pIter(new CFX_WordBreak);
pIter->Attach(new CFDE_TxtEdtBuf::Iterator(pBuf));
pIter->SetAt(nIndex);
nCount = pIter->GetWordLength();
return pIter->GetWordPos();
}
bool CFDE_TxtEdtPage::IsLoaded(const CFX_RectF* pClipBox) {
return m_bLoaded;
}
int32_t CFDE_TxtEdtPage::LoadPage(const CFX_RectF* pClipBox,
IFX_Pause* pPause) {
if (m_nRefCount > 0) {
m_nRefCount++;
return m_nRefCount;
}
CFDE_TxtEdtBuf* pBuf = m_pEditEngine->GetTextBuf();
const FDE_TXTEDTPARAMS* pParams = m_pEditEngine->GetEditParams();
FX_WCHAR wcAlias = 0;
if (pParams->dwMode & FDE_TEXTEDITMODE_Password) {
wcAlias = m_pEditEngine->GetAliasChar();
}
m_pIter.reset(new CFDE_TxtEdtBuf::Iterator(static_cast<CFDE_TxtEdtBuf*>(pBuf),
wcAlias));
CFX_TxtBreak* pBreak = m_pEditEngine->GetTextBreak();
pBreak->EndBreak(FX_TXTBREAK_ParagraphBreak);
pBreak->ClearBreakPieces();
int32_t nPageLineCount = m_pEditEngine->GetPageLineCount();
int32_t nStartLine = nPageLineCount * m_nPageIndex;
int32_t nEndLine = std::min((nStartLine + nPageLineCount - 1),
(m_pEditEngine->GetLineCount() - 1));
int32_t nPageStart, nPageEnd, nTemp, nBgnParag, nStartLineInParag, nEndParag,
nEndLineInParag;
nBgnParag = m_pEditEngine->Line2Parag(0, 0, nStartLine, nStartLineInParag);
m_pBgnParag =
static_cast<CFDE_TxtEdtParag*>(m_pEditEngine->GetParag(nBgnParag));
m_pBgnParag->LoadParag();
m_pBgnParag->GetLineRange(nStartLine - nStartLineInParag, nPageStart, nTemp);
nEndParag = m_pEditEngine->Line2Parag(nBgnParag, nStartLineInParag, nEndLine,
nEndLineInParag);
m_pEndParag =
static_cast<CFDE_TxtEdtParag*>(m_pEditEngine->GetParag(nEndParag));
m_pEndParag->LoadParag();
m_pEndParag->GetLineRange(nEndLine - nEndLineInParag, nPageEnd, nTemp);
nPageEnd += (nTemp - 1);
FX_FLOAT fLineStart = 0.0f;
FX_FLOAT fLineStep = pParams->fLineSpace;
FX_FLOAT fLinePos = fLineStart;
if (!m_pTextSet)
m_pTextSet = pdfium::MakeUnique<CFDE_TxtEdtTextSet>(this);
m_Pieces.clear();
uint32_t dwBreakStatus = FX_TXTBREAK_None;
int32_t nPieceStart = 0;
m_CharWidths.resize(nPageEnd - nPageStart + 1, 0);
pBreak->EndBreak(FX_TXTBREAK_ParagraphBreak);
pBreak->ClearBreakPieces();
m_nPageStart = nPageStart;
m_nCharCount = nPageEnd - nPageStart + 1;
bool bReload = false;
FX_FLOAT fDefCharWidth = 0;
std::unique_ptr<IFX_CharIter> pIter(m_pIter->Clone());
pIter->SetAt(nPageStart);
m_pIter->SetAt(nPageStart);
bool bFirstPiece = true;
do {
if (bReload) {
dwBreakStatus = pBreak->EndBreak(FX_TXTBREAK_ParagraphBreak);
} else {
FX_WCHAR wAppend = pIter->GetChar();
dwBreakStatus = pBreak->AppendChar(wAppend);
}
if (pIter->GetAt() == nPageEnd && dwBreakStatus < FX_TXTBREAK_LineBreak) {
dwBreakStatus = pBreak->EndBreak(FX_TXTBREAK_ParagraphBreak);
}
if (dwBreakStatus > FX_TXTBREAK_PieceBreak) {
int32_t nPieceCount = pBreak->CountBreakPieces();
for (int32_t j = 0; j < nPieceCount; j++) {
const CFX_TxtPiece* pPiece = pBreak->GetBreakPiece(j);
FDE_TEXTEDITPIECE TxtEdtPiece;
FXSYS_memset(&TxtEdtPiece, 0, sizeof(FDE_TEXTEDITPIECE));
TxtEdtPiece.nBidiLevel = pPiece->m_iBidiLevel;
TxtEdtPiece.nCount = pPiece->GetLength();
TxtEdtPiece.nStart = nPieceStart;
TxtEdtPiece.dwCharStyles = pPiece->m_dwCharStyles;
if (FX_IsOdd(pPiece->m_iBidiLevel)) {
TxtEdtPiece.dwCharStyles |= FX_TXTCHARSTYLE_OddBidiLevel;
}
FX_FLOAT fParaBreakWidth = 0.0f;
if (pPiece->m_dwStatus > FX_TXTBREAK_PieceBreak) {
FX_WCHAR wRtChar = pParams->wLineBreakChar;
if (TxtEdtPiece.nCount >= 2) {
FX_WCHAR wChar = pBuf->GetCharByIndex(
m_nPageStart + TxtEdtPiece.nStart + TxtEdtPiece.nCount - 1);
FX_WCHAR wCharPre = pBuf->GetCharByIndex(
m_nPageStart + TxtEdtPiece.nStart + TxtEdtPiece.nCount - 2);
if (wChar == wRtChar) {
fParaBreakWidth += fDefCharWidth;
}
if (wCharPre == wRtChar) {
fParaBreakWidth += fDefCharWidth;
}
} else if (TxtEdtPiece.nCount >= 1) {
FX_WCHAR wChar = pBuf->GetCharByIndex(
m_nPageStart + TxtEdtPiece.nStart + TxtEdtPiece.nCount - 1);
if (wChar == wRtChar) {
fParaBreakWidth += fDefCharWidth;
}
}
}
TxtEdtPiece.rtPiece.left = (FX_FLOAT)pPiece->m_iStartPos / 20000.0f;
TxtEdtPiece.rtPiece.top = fLinePos;
TxtEdtPiece.rtPiece.width =
(FX_FLOAT)pPiece->m_iWidth / 20000.0f + fParaBreakWidth;
TxtEdtPiece.rtPiece.height = pParams->fLineSpace;
if (bFirstPiece) {
m_rtPageContents = TxtEdtPiece.rtPiece;
bFirstPiece = false;
} else {
m_rtPageContents.Union(TxtEdtPiece.rtPiece);
}
nPieceStart += TxtEdtPiece.nCount;
m_Pieces.push_back(TxtEdtPiece);
for (int32_t k = 0; k < TxtEdtPiece.nCount; k++) {
CFX_Char* ptc = pPiece->GetCharPtr(k);
m_CharWidths[TxtEdtPiece.nStart + k] = ptc->m_iCharWidth;
}
}
fLinePos += fLineStep;
pBreak->ClearBreakPieces();
}
if (pIter->GetAt() == nPageEnd && dwBreakStatus == FX_TXTBREAK_LineBreak) {
bReload = true;
pIter->Next(true);
}
} while (pIter->Next(false) && (pIter->GetAt() <= nPageEnd));
if (m_rtPageContents.left != 0) {
FX_FLOAT fDelta = 0.0f;
if (m_rtPageContents.width < pParams->fPlateWidth) {
if (pParams->dwAlignment & FDE_TEXTEDITALIGN_Right) {
fDelta = pParams->fPlateWidth - m_rtPageContents.width;
} else if (pParams->dwAlignment & FDE_TEXTEDITALIGN_Center) {
if ((pParams->dwLayoutStyles & FDE_TEXTEDITLAYOUT_CombText) &&
m_nCharCount > 1) {
int32_t nCount = m_nCharCount - 1;
int32_t n = (m_pEditEngine->m_nLimit - nCount) / 2;
fDelta = (m_rtPageContents.width / nCount) * n;
} else {
fDelta = (pParams->fPlateWidth - m_rtPageContents.width) / 2;
}
}
}
FX_FLOAT fOffset = m_rtPageContents.left - fDelta;
for (auto& piece : m_Pieces)
piece.rtPiece.Offset(-fOffset, 0.0f);
m_rtPageContents.Offset(-fOffset, 0.0f);
}
if (m_pEditEngine->GetEditParams()->dwLayoutStyles &
FDE_TEXTEDITLAYOUT_LastLineHeight) {
m_rtPageContents.height -= pParams->fLineSpace - pParams->fFontSize;
m_Pieces.back().rtPiece.height = pParams->fFontSize;
}
m_nRefCount = 1;
m_bLoaded = true;
return 0;
}
void CFDE_TxtEdtPage::UnloadPage(const CFX_RectF* pClipBox) {
ASSERT(m_nRefCount > 0);
m_nRefCount--;
if (m_nRefCount != 0)
return;
m_Pieces.clear();
m_pTextSet.reset();
m_CharWidths.clear();
if (m_pBgnParag) {
m_pBgnParag->UnloadParag();
m_pBgnParag = nullptr;
}
if (m_pEndParag) {
m_pEndParag->UnloadParag();
m_pEndParag = nullptr;
}
m_pIter.reset();
}
const CFX_RectF& CFDE_TxtEdtPage::GetContentsBox() {
return m_rtPageContents;
}
FX_POSITION CFDE_TxtEdtPage::GetFirstPosition() {
if (m_Pieces.empty())
return nullptr;
return (FX_POSITION)1;
}
FDE_TEXTEDITPIECE* CFDE_TxtEdtPage::GetNext(FX_POSITION& pos,
IFDE_VisualSet*& pVisualSet) {
if (!m_pTextSet) {
pos = nullptr;
return nullptr;
}
int32_t nPos = (int32_t)(uintptr_t)pos;
pVisualSet = m_pTextSet.get();
if (nPos + 1 > pdfium::CollectionSize<int32_t>(m_Pieces))
pos = nullptr;
else
pos = (FX_POSITION)(uintptr_t)(nPos + 1);
return &m_Pieces[nPos - 1];
}
FX_WCHAR CFDE_TxtEdtPage::GetChar(const FDE_TEXTEDITPIECE* pIdentity,
int32_t index) const {
int32_t nIndex = m_nPageStart + pIdentity->nStart + index;
if (nIndex != m_pIter->GetAt())
m_pIter->SetAt(nIndex);
FX_WCHAR wChar = m_pIter->GetChar();
m_pIter->Next();
return wChar;
}
int32_t CFDE_TxtEdtPage::GetWidth(const FDE_TEXTEDITPIECE* pIdentity,
int32_t index) const {
int32_t nWidth = m_CharWidths[pIdentity->nStart + index];
return nWidth;
}
void CFDE_TxtEdtPage::NormalizePt2Rect(CFX_PointF& ptF,
const CFX_RectF& rtF,
FX_FLOAT fTolerance) const {
if (rtF.Contains(ptF))
return;
if (ptF.x < rtF.left)
ptF.x = rtF.left;
else if (ptF.x >= rtF.right())
ptF.x = rtF.right() - fTolerance;
if (ptF.y < rtF.top)
ptF.y = rtF.top;
else if (ptF.y >= rtF.bottom())
ptF.y = rtF.bottom() - fTolerance;
}