1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
|
// 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
#ifndef XFA_FGAS_LAYOUT_FGAS_TEXTBREAK_H_
#define XFA_FGAS_LAYOUT_FGAS_TEXTBREAK_H_
#include <deque>
#include <memory>
#include <vector>
#include "core/fxcrt/fx_ucd.h"
#include "core/fxge/cfx_renderdevice.h"
#include "third_party/base/stl_util.h"
#include "xfa/fgas/crt/fgas_utils.h"
class CFX_Char;
class CFGAS_GEFont;
class CFX_TxtChar;
class CFX_TxtPiece;
class IFX_TxtAccess;
struct FDE_TEXTEDITPIECE;
#define FX_TXTLAYOUTSTYLE_SingleLine 0x0200
#define FX_TXTLAYOUTSTYLE_CombText 0x0400
#define FX_TXTCHARSTYLE_ArabicShadda 0x0020
#define FX_TXTCHARSTYLE_OddBidiLevel 0x0040
enum CFX_TxtLineAlignment {
CFX_TxtLineAlignment_Left = 0,
CFX_TxtLineAlignment_Center = 1 << 0,
CFX_TxtLineAlignment_Right = 1 << 1,
CFX_TxtLineAlignment_Justified = 1 << 2
};
struct FX_TPO {
int32_t index;
int32_t pos;
bool operator<(const FX_TPO& that) const { return pos < that.pos; }
};
inline bool CFX_BreakTypeNoneOrPiece(CFX_BreakType type) {
return type == CFX_BreakType::None || type == CFX_BreakType::Piece;
}
class IFX_TxtAccess {
public:
virtual ~IFX_TxtAccess() {}
virtual FX_WCHAR GetChar(const FDE_TEXTEDITPIECE* pIdentity,
int32_t index) const = 0;
virtual int32_t GetWidth(const FDE_TEXTEDITPIECE* pIdentity,
int32_t index) const = 0;
};
struct FX_TXTRUN {
FX_TXTRUN();
FX_TXTRUN(const FX_TXTRUN& other);
~FX_TXTRUN();
IFX_TxtAccess* pAccess;
const FDE_TEXTEDITPIECE* pIdentity;
CFX_WideString wsStr;
int32_t* pWidths;
int32_t iLength;
CFX_RetainPtr<CFGAS_GEFont> pFont;
FX_FLOAT fFontSize;
uint32_t dwStyles;
int32_t iHorizontalScale;
int32_t iVerticalScale;
int32_t iCharRotation;
uint32_t dwCharStyles;
const CFX_RectF* pRect;
FX_WCHAR wLineBreakChar;
bool bSkipSpace;
};
class CFX_TxtPiece {
public:
CFX_TxtPiece();
int32_t GetEndPos() const {
return m_iWidth < 0 ? m_iStartPos : m_iStartPos + m_iWidth;
}
int32_t GetLength() const { return m_iChars; }
int32_t GetEndChar() const { return m_iStartChar + m_iChars; }
CFX_TxtChar* GetCharPtr(int32_t index) const {
ASSERT(index > -1 && index < m_iChars && m_pChars);
return &(*m_pChars)[m_iStartChar + index];
}
void GetString(FX_WCHAR* pText) const {
ASSERT(pText);
int32_t iEndChar = m_iStartChar + m_iChars;
for (int32_t i = m_iStartChar; i < iEndChar; i++)
*pText++ = static_cast<FX_WCHAR>((*m_pChars)[i].m_wCharCode);
}
void GetString(CFX_WideString& wsText) const {
FX_WCHAR* pText = wsText.GetBuffer(m_iChars);
GetString(pText);
wsText.ReleaseBuffer(m_iChars);
}
void GetWidths(int32_t* pWidths) const {
ASSERT(pWidths);
int32_t iEndChar = m_iStartChar + m_iChars;
for (int32_t i = m_iStartChar; i < iEndChar; i++)
*pWidths++ = (*m_pChars)[i].m_iCharWidth;
}
CFX_BreakType m_dwStatus;
int32_t m_iStartPos;
int32_t m_iWidth;
int32_t m_iStartChar;
int32_t m_iChars;
int32_t m_iBidiLevel;
int32_t m_iBidiPos;
int32_t m_iHorizontalScale;
int32_t m_iVerticalScale;
uint32_t m_dwCharStyles;
std::vector<CFX_TxtChar>* m_pChars;
};
typedef CFX_BaseArrayTemplate<CFX_TxtPiece> CFX_TxtPieceArray;
class CFX_TxtLine {
public:
CFX_TxtLine();
~CFX_TxtLine();
int32_t CountChars() const {
return pdfium::CollectionSize<int32_t>(m_LineChars);
}
CFX_TxtChar* GetCharPtr(int32_t index) {
ASSERT(index >= 0 && index < pdfium::CollectionSize<int32_t>(m_LineChars));
return &m_LineChars[index];
}
const CFX_TxtChar* GetCharPtr(int32_t index) const {
ASSERT(index >= 0 && index < pdfium::CollectionSize<int32_t>(m_LineChars));
return &m_LineChars[index];
}
int32_t CountPieces() const { return m_LinePieces.GetSize(); }
CFX_TxtPiece* GetPiecePtr(int32_t index) const {
ASSERT(index > -1 && index < m_LinePieces.GetSize());
return m_LinePieces.GetPtrAt(index);
}
void GetString(CFX_WideString& wsStr) const {
int32_t iCount = pdfium::CollectionSize<int32_t>(m_LineChars);
FX_WCHAR* pBuf = wsStr.GetBuffer(iCount);
for (int32_t i = 0; i < iCount; i++)
*pBuf++ = static_cast<FX_WCHAR>(m_LineChars[i].m_wCharCode);
wsStr.ReleaseBuffer(iCount);
}
void RemoveAll(bool bLeaveMemory = false) {
m_LineChars.clear();
m_LinePieces.RemoveAll(bLeaveMemory);
m_iWidth = 0;
m_iArabicChars = 0;
}
std::vector<CFX_TxtChar> m_LineChars;
CFX_TxtPieceArray m_LinePieces;
int32_t m_iStart;
int32_t m_iWidth;
int32_t m_iArabicChars;
};
class CFX_TxtBreak {
public:
CFX_TxtBreak();
~CFX_TxtBreak();
void SetLineWidth(FX_FLOAT fLineWidth);
uint32_t GetLayoutStyles() const { return m_dwLayoutStyles; }
void SetLayoutStyles(uint32_t dwLayoutStyles);
void SetFont(const CFX_RetainPtr<CFGAS_GEFont>& pFont);
void SetFontSize(FX_FLOAT fFontSize);
void SetTabWidth(FX_FLOAT fTabWidth, bool bEquidistant);
void SetDefaultChar(FX_WCHAR wch);
void SetParagraphBreakChar(FX_WCHAR wch);
void SetLineBreakTolerance(FX_FLOAT fTolerance);
void SetHorizontalScale(int32_t iScale);
void SetCharRotation(int32_t iCharRotation);
void SetCharSpace(FX_FLOAT fCharSpace);
void SetAlignment(int32_t iAlignment);
void SetCombWidth(FX_FLOAT fCombWidth);
CFX_BreakType EndBreak(CFX_BreakType dwStatus);
int32_t CountBreakPieces() const;
const CFX_TxtPiece* GetBreakPiece(int32_t index) const;
void ClearBreakPieces();
void Reset();
int32_t GetDisplayPos(const FX_TXTRUN* pTxtRun,
FXTEXT_CHARPOS* pCharPos,
bool bCharCode = false,
CFX_WideString* pWSForms = nullptr) const;
std::vector<CFX_RectF> GetCharRects(const FX_TXTRUN* pTxtRun,
bool bCharBBox = false) const;
void AppendChar_PageLoad(CFX_TxtChar* pCurChar, uint32_t dwProps);
CFX_BreakType AppendChar(FX_WCHAR wch);
CFX_BreakType AppendChar_Combination(CFX_TxtChar* pCurChar,
int32_t iRotation);
CFX_BreakType AppendChar_Tab(CFX_TxtChar* pCurChar, int32_t iRotation);
CFX_BreakType AppendChar_Control(CFX_TxtChar* pCurChar, int32_t iRotation);
CFX_BreakType AppendChar_Arabic(CFX_TxtChar* pCurChar, int32_t iRotation);
CFX_BreakType AppendChar_Others(CFX_TxtChar* pCurChar, int32_t iRotation);
private:
void FontChanged();
void SetBreakStatus();
int32_t GetLineRotation(uint32_t dwStyles) const;
CFX_TxtChar* GetLastChar(int32_t index, bool bOmitChar = true) const;
const CFX_TxtLine* GetTxtLine() const;
const CFX_TxtPieceArray* GetTxtPieces() const;
FX_CHARTYPE GetUnifiedCharType(FX_CHARTYPE dwType) const;
void ResetArabicContext();
void ResetContextCharStyles();
bool EndBreak_SplitLine(CFX_TxtLine* pNextLine, bool bAllChars);
void EndBreak_BidiLine(std::deque<FX_TPO>* tpos, CFX_BreakType dwStatus);
void EndBreak_Alignment(const std::deque<FX_TPO>& tpos,
bool bAllChars,
CFX_BreakType dwStatus);
int32_t GetBreakPos(std::vector<CFX_TxtChar>& ca,
int32_t& iEndPos,
bool bAllChars = false,
bool bOnlyBrk = false);
void SplitTextLine(CFX_TxtLine* pCurLine,
CFX_TxtLine* pNextLine,
bool bAllChars = false);
int32_t m_iLineWidth;
uint32_t m_dwLayoutStyles;
bool m_bSingleLine;
bool m_bCombText;
int32_t m_iArabicContext;
int32_t m_iCurArabicContext;
CFX_RetainPtr<CFGAS_GEFont> m_pFont;
int32_t m_iFontSize;
bool m_bEquidistant;
int32_t m_iTabWidth;
FX_WCHAR m_wDefChar;
FX_WCHAR m_wParagBreakChar;
int32_t m_iDefChar;
int32_t m_iLineRotation;
int32_t m_iCharRotation;
int32_t m_iRotation;
int32_t m_iAlignment;
uint32_t m_dwContextCharStyles;
int32_t m_iCombWidth;
FX_CHARTYPE m_eCharType;
int32_t m_iCurAlignment;
CFX_TxtLine m_TxtLine1;
CFX_TxtLine m_TxtLine2;
CFX_TxtLine* m_pCurLine;
int32_t m_iReady;
int32_t m_iTolerance;
int32_t m_iHorScale;
int32_t m_iCharSpace;
};
#endif // XFA_FGAS_LAYOUT_FGAS_TEXTBREAK_H_
|
