1 // Copyright 2014 PDFium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
4
5 // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
6
7 #include "xfa/src/foxitlib.h"
8 #include "xfa/src/fee/include/ifde_txtedtbuf.h"
9 #include "xfa/src/fee/include/ifde_txtedtengine.h"
10 #include "xfa/src/fee/include/fx_wordbreak.h"
11 #include "fde_txtedtparag.h"
12 #include "fde_txtedtengine.h"
13 #include "fde_txtedtbuf.h"
CFDE_TxtEdtParag(CFDE_TxtEdtEngine * pEngine)14 CFDE_TxtEdtParag::CFDE_TxtEdtParag(CFDE_TxtEdtEngine* pEngine)
15 : m_nCharStart(0),
16 m_nCharCount(0),
17 m_nLineCount(0),
18 m_lpData(NULL),
19 m_pEngine(pEngine) {
20 FXSYS_assert(m_pEngine);
21 }
~CFDE_TxtEdtParag()22 CFDE_TxtEdtParag::~CFDE_TxtEdtParag() {
23 if (m_lpData != NULL) {
24 FX_Free(m_lpData);
25 }
26 }
LoadParag()27 void CFDE_TxtEdtParag::LoadParag() {
28 if (m_lpData != NULL) {
29 ((int32_t*)m_lpData)[0]++;
30 return;
31 }
32 IFX_TxtBreak* pTxtBreak = m_pEngine->GetTextBreak();
33 IFDE_TxtEdtBuf* pTxtBuf = m_pEngine->GetTextBuf();
34 const FDE_TXTEDTPARAMS* pParam = m_pEngine->GetEditParams();
35 FX_WCHAR wcAlias = 0;
36 if (pParam->dwMode & FDE_TEXTEDITMODE_Password) {
37 wcAlias = m_pEngine->GetAliasChar();
38 }
39 IFX_CharIter* pIter =
40 new CFDE_TxtEdtBufIter((CFDE_TxtEdtBuf*)pTxtBuf, wcAlias);
41 pIter->SetAt(m_nCharStart);
42 int32_t nEndIndex = m_nCharStart + m_nCharCount;
43 CFX_ArrayTemplate<int32_t> LineBaseArr;
44 FX_BOOL bReload = FALSE;
45 FX_DWORD dwBreakStatus = FX_TXTBREAK_None;
46 do {
47 if (bReload) {
48 dwBreakStatus = pTxtBreak->EndBreak(FX_TXTBREAK_ParagraphBreak);
49 } else {
50 FX_WCHAR wAppend = pIter->GetChar();
51 dwBreakStatus = pTxtBreak->AppendChar(wAppend);
52 }
53 if (pIter->GetAt() + 1 == nEndIndex &&
54 dwBreakStatus < FX_TXTBREAK_LineBreak) {
55 dwBreakStatus = pTxtBreak->EndBreak(FX_TXTBREAK_ParagraphBreak);
56 }
57 if (dwBreakStatus > FX_TXTBREAK_PieceBreak) {
58 int32_t nCount = pTxtBreak->CountBreakPieces();
59 int32_t nTotal = 0;
60 for (int32_t j = 0; j < nCount; j++) {
61 const CFX_TxtPiece* Piece = pTxtBreak->GetBreakPiece(j);
62 nTotal += Piece->GetLength();
63 }
64 LineBaseArr.Add(nTotal);
65 pTxtBreak->ClearBreakPieces();
66 }
67 if ((pIter->GetAt() + 1 == nEndIndex) &&
68 (dwBreakStatus == FX_TXTBREAK_LineBreak)) {
69 bReload = TRUE;
70 pIter->Next(TRUE);
71 }
72 } while (pIter->Next(FALSE) && (pIter->GetAt() < nEndIndex));
73 pIter->Release();
74 pTxtBreak->EndBreak(FX_TXTBREAK_ParagraphBreak);
75 pTxtBreak->ClearBreakPieces();
76 int32_t nLineCount = LineBaseArr.GetSize();
77 m_nLineCount = nLineCount;
78 if (m_lpData == NULL) {
79 m_lpData = FX_Alloc(int32_t, nLineCount + 1);
80 } else {
81 m_lpData = FX_Realloc(int32_t, m_lpData, (nLineCount + 1));
82 }
83 int32_t* pIntArr = (int32_t*)m_lpData;
84 pIntArr[0] = 1;
85 m_nLineCount = nLineCount;
86 pIntArr++;
87 for (int32_t j = 0; j < nLineCount; j++, pIntArr++) {
88 *pIntArr = LineBaseArr[j];
89 }
90 LineBaseArr.RemoveAll();
91 }
UnloadParag()92 void CFDE_TxtEdtParag::UnloadParag() {
93 FXSYS_assert(m_lpData != NULL);
94 ((int32_t*)m_lpData)[0]--;
95 FXSYS_assert(((int32_t*)m_lpData)[0] >= 0);
96 if (((int32_t*)m_lpData)[0] == 0) {
97 FX_Free(m_lpData);
98 m_lpData = NULL;
99 }
100 }
CalcLines()101 void CFDE_TxtEdtParag::CalcLines() {
102 IFX_TxtBreak* pTxtBreak = m_pEngine->GetTextBreak();
103 IFDE_TxtEdtBuf* pTxtBuf = m_pEngine->GetTextBuf();
104 IFX_CharIter* pIter = new CFDE_TxtEdtBufIter((CFDE_TxtEdtBuf*)pTxtBuf);
105 int32_t nCount = 0;
106 FX_DWORD dwBreakStatus = FX_TXTBREAK_None;
107 int32_t nEndIndex = m_nCharStart + m_nCharCount;
108 pIter->SetAt(m_nCharStart);
109 FX_BOOL bReload = FALSE;
110 do {
111 if (bReload) {
112 dwBreakStatus = pTxtBreak->EndBreak(FX_TXTBREAK_ParagraphBreak);
113 } else {
114 FX_WCHAR wAppend = pIter->GetChar();
115 dwBreakStatus = pTxtBreak->AppendChar(wAppend);
116 }
117 if (pIter->GetAt() + 1 == nEndIndex &&
118 dwBreakStatus < FX_TXTBREAK_LineBreak) {
119 dwBreakStatus = pTxtBreak->EndBreak(FX_TXTBREAK_ParagraphBreak);
120 }
121 if (dwBreakStatus > FX_TXTBREAK_PieceBreak) {
122 nCount++;
123 pTxtBreak->ClearBreakPieces();
124 }
125 if ((pIter->GetAt() + 1 == nEndIndex) &&
126 (dwBreakStatus == FX_TXTBREAK_LineBreak)) {
127 bReload = TRUE;
128 pIter->Next(TRUE);
129 }
130 } while (pIter->Next(FALSE) && (pIter->GetAt() < nEndIndex));
131 pIter->Release();
132 pTxtBreak->EndBreak(FX_TXTBREAK_ParagraphBreak);
133 pTxtBreak->ClearBreakPieces();
134 m_nLineCount = nCount;
135 }
GetLineRange(int32_t nLineIndex,int32_t & nStart,int32_t & nCount) const136 void CFDE_TxtEdtParag::GetLineRange(int32_t nLineIndex,
137 int32_t& nStart,
138 int32_t& nCount) const {
139 int32_t* pLineBaseArr = (int32_t*)m_lpData;
140 FXSYS_assert(nLineIndex < m_nLineCount);
141 nStart = m_nCharStart;
142 pLineBaseArr++;
143 for (int32_t i = 0; i < nLineIndex; i++) {
144 nStart += *pLineBaseArr;
145 pLineBaseArr++;
146 }
147 nCount = *pLineBaseArr;
148 }
149