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/fgas/layout/fgas_textbreak.h"
8
9 #include <algorithm>
10
11 #include "core/fxcrt/fx_arabic.h"
12 #include "core/fxcrt/fx_arb.h"
13 #include "core/fxcrt/fx_memory.h"
14 #include "third_party/base/ptr_util.h"
15 #include "xfa/fgas/font/cfgas_gefont.h"
16 #include "xfa/fgas/layout/fgas_linebreak.h"
17
18 namespace {
19
20 typedef uint32_t (CFX_TxtBreak::*FX_TxtBreak_LPFAppendChar)(
21 CFX_TxtChar* pCurChar,
22 int32_t iRotation);
23 const FX_TxtBreak_LPFAppendChar g_FX_TxtBreak_lpfAppendChar[16] = {
24 &CFX_TxtBreak::AppendChar_Others, &CFX_TxtBreak::AppendChar_Tab,
25 &CFX_TxtBreak::AppendChar_Others, &CFX_TxtBreak::AppendChar_Control,
26 &CFX_TxtBreak::AppendChar_Combination, &CFX_TxtBreak::AppendChar_Others,
27 &CFX_TxtBreak::AppendChar_Others, &CFX_TxtBreak::AppendChar_Arabic,
28 &CFX_TxtBreak::AppendChar_Arabic, &CFX_TxtBreak::AppendChar_Arabic,
29 &CFX_TxtBreak::AppendChar_Arabic, &CFX_TxtBreak::AppendChar_Arabic,
30 &CFX_TxtBreak::AppendChar_Arabic, &CFX_TxtBreak::AppendChar_Others,
31 &CFX_TxtBreak::AppendChar_Others, &CFX_TxtBreak::AppendChar_Others,
32 };
33
34 } // namespace
35
CFX_TxtBreak(uint32_t dwPolicies)36 CFX_TxtBreak::CFX_TxtBreak(uint32_t dwPolicies)
37 : m_dwPolicies(dwPolicies),
38 m_iLineWidth(2000000),
39 m_dwLayoutStyles(0),
40 m_bVertical(false),
41 m_bArabicContext(false),
42 m_bArabicShapes(false),
43 m_bRTL(false),
44 m_bSingleLine(false),
45 m_bCombText(false),
46 m_iArabicContext(1),
47 m_iCurArabicContext(1),
48 m_pFont(nullptr),
49 m_iFontSize(240),
50 m_bEquidistant(true),
51 m_iTabWidth(720000),
52 m_wDefChar(0xFEFF),
53 m_wParagBreakChar(L'\n'),
54 m_iDefChar(0),
55 m_iLineRotation(0),
56 m_iCharRotation(0),
57 m_iRotation(0),
58 m_iAlignment(FX_TXTLINEALIGNMENT_Left),
59 m_dwContextCharStyles(0),
60 m_iCombWidth(360000),
61 m_pUserData(nullptr),
62 m_eCharType(FX_CHARTYPE_Unknown),
63 m_bArabicNumber(false),
64 m_bArabicComma(false),
65 m_pCurLine(nullptr),
66 m_iReady(0),
67 m_iTolerance(0),
68 m_iHorScale(100),
69 m_iCharSpace(0) {
70 m_bPagination = (m_dwPolicies & FX_TXTBREAKPOLICY_Pagination) != 0;
71 int32_t iSize = m_bPagination ? sizeof(CFX_Char) : sizeof(CFX_TxtChar);
72 m_pTxtLine1 = pdfium::MakeUnique<CFX_TxtLine>(iSize);
73 m_pTxtLine2 = pdfium::MakeUnique<CFX_TxtLine>(iSize);
74 m_pCurLine = m_pTxtLine1.get();
75 ResetArabicContext();
76 }
77
~CFX_TxtBreak()78 CFX_TxtBreak::~CFX_TxtBreak() {
79 Reset();
80 }
81
SetLineWidth(FX_FLOAT fLineWidth)82 void CFX_TxtBreak::SetLineWidth(FX_FLOAT fLineWidth) {
83 m_iLineWidth = FXSYS_round(fLineWidth * 20000.0f);
84 ASSERT(m_iLineWidth >= 20000);
85 }
86
SetLinePos(FX_FLOAT fLinePos)87 void CFX_TxtBreak::SetLinePos(FX_FLOAT fLinePos) {
88 int32_t iLinePos =
89 std::min(std::max(FXSYS_round(fLinePos * 20000.0f), 0), m_iLineWidth);
90 m_pCurLine->m_iStart = iLinePos;
91 m_pCurLine->m_iWidth += iLinePos;
92 }
93
SetLayoutStyles(uint32_t dwLayoutStyles)94 void CFX_TxtBreak::SetLayoutStyles(uint32_t dwLayoutStyles) {
95 m_dwLayoutStyles = dwLayoutStyles;
96 m_bVertical = (m_dwLayoutStyles & FX_TXTLAYOUTSTYLE_VerticalChars) != 0;
97 m_bArabicContext = (m_dwLayoutStyles & FX_TXTLAYOUTSTYLE_ArabicContext) != 0;
98 m_bArabicShapes = (m_dwLayoutStyles & FX_TXTLAYOUTSTYLE_ArabicShapes) != 0;
99 m_bRTL = (m_dwLayoutStyles & FX_TXTLAYOUTSTYLE_RTLReadingOrder) != 0;
100 m_bSingleLine = (m_dwLayoutStyles & FX_TXTLAYOUTSTYLE_SingleLine) != 0;
101 m_bCombText = (m_dwLayoutStyles & FX_TXTLAYOUTSTYLE_CombText) != 0;
102 ResetArabicContext();
103 m_iLineRotation = GetLineRotation(m_dwLayoutStyles);
104 m_iRotation = m_iLineRotation + m_iCharRotation;
105 m_iRotation %= 4;
106 }
107
SetFont(const CFX_RetainPtr<CFGAS_GEFont> & pFont)108 void CFX_TxtBreak::SetFont(const CFX_RetainPtr<CFGAS_GEFont>& pFont) {
109 if (!pFont || pFont == m_pFont)
110 return;
111
112 SetBreakStatus();
113 m_pFont = pFont;
114 FontChanged();
115 }
116
SetFontSize(FX_FLOAT fFontSize)117 void CFX_TxtBreak::SetFontSize(FX_FLOAT fFontSize) {
118 int32_t iFontSize = FXSYS_round(fFontSize * 20.0f);
119 if (m_iFontSize == iFontSize)
120 return;
121
122 SetBreakStatus();
123 m_iFontSize = iFontSize;
124 FontChanged();
125 }
126
FontChanged()127 void CFX_TxtBreak::FontChanged() {
128 m_iDefChar = 0;
129 if (m_wDefChar == 0xFEFF || !m_pFont)
130 return;
131
132 m_pFont->GetCharWidth(m_wDefChar, m_iDefChar, false);
133 m_iDefChar *= m_iFontSize;
134 }
135
SetTabWidth(FX_FLOAT fTabWidth,bool bEquidistant)136 void CFX_TxtBreak::SetTabWidth(FX_FLOAT fTabWidth, bool bEquidistant) {
137 m_iTabWidth = FXSYS_round(fTabWidth * 20000.0f);
138 if (m_iTabWidth < FX_TXTBREAK_MinimumTabWidth)
139 m_iTabWidth = FX_TXTBREAK_MinimumTabWidth;
140
141 m_bEquidistant = bEquidistant;
142 }
143
SetDefaultChar(FX_WCHAR wch)144 void CFX_TxtBreak::SetDefaultChar(FX_WCHAR wch) {
145 m_wDefChar = wch;
146 m_iDefChar = 0;
147 if (m_wDefChar == 0xFEFF || !m_pFont)
148 return;
149
150 m_pFont->GetCharWidth(m_wDefChar, m_iDefChar, false);
151 if (m_iDefChar < 0)
152 m_iDefChar = 0;
153 else
154 m_iDefChar *= m_iFontSize;
155 }
156
SetParagraphBreakChar(FX_WCHAR wch)157 void CFX_TxtBreak::SetParagraphBreakChar(FX_WCHAR wch) {
158 if (wch != L'\r' && wch != L'\n')
159 return;
160 m_wParagBreakChar = wch;
161 }
162
SetLineBreakTolerance(FX_FLOAT fTolerance)163 void CFX_TxtBreak::SetLineBreakTolerance(FX_FLOAT fTolerance) {
164 m_iTolerance = FXSYS_round(fTolerance * 20000.0f);
165 }
166
SetCharRotation(int32_t iCharRotation)167 void CFX_TxtBreak::SetCharRotation(int32_t iCharRotation) {
168 if (iCharRotation < 0)
169 iCharRotation += (-iCharRotation / 4 + 1) * 4;
170 else if (iCharRotation > 3)
171 iCharRotation -= (iCharRotation / 4) * 4;
172
173 if (m_iCharRotation == iCharRotation)
174 return;
175
176 SetBreakStatus();
177 m_iCharRotation = iCharRotation;
178 m_iRotation = m_iLineRotation + m_iCharRotation;
179 m_iRotation %= 4;
180 }
181
SetAlignment(int32_t iAlignment)182 void CFX_TxtBreak::SetAlignment(int32_t iAlignment) {
183 ASSERT(iAlignment >= FX_TXTLINEALIGNMENT_Left &&
184 iAlignment <= FX_TXTLINEALIGNMENT_Distributed);
185 m_iAlignment = iAlignment;
186 ResetArabicContext();
187 }
188
ResetContextCharStyles()189 void CFX_TxtBreak::ResetContextCharStyles() {
190 m_dwContextCharStyles = m_bArabicContext ? m_iCurAlignment : m_iAlignment;
191 if (m_bArabicNumber)
192 m_dwContextCharStyles |= FX_TXTCHARSTYLE_ArabicNumber;
193 if (m_bArabicComma)
194 m_dwContextCharStyles |= FX_TXTCHARSTYLE_ArabicComma;
195 if ((m_bArabicContext && m_bCurRTL) || (!m_bArabicContext && m_bRTL))
196 m_dwContextCharStyles |= FX_TXTCHARSTYLE_RTLReadingOrder;
197 m_dwContextCharStyles |= (m_iArabicContext << 8);
198 }
199
SetCombWidth(FX_FLOAT fCombWidth)200 void CFX_TxtBreak::SetCombWidth(FX_FLOAT fCombWidth) {
201 m_iCombWidth = FXSYS_round(fCombWidth * 20000.0f);
202 }
203
SetUserData(void * pUserData)204 void CFX_TxtBreak::SetUserData(void* pUserData) {
205 if (m_pUserData == pUserData)
206 return;
207
208 SetBreakStatus();
209 m_pUserData = pUserData;
210 }
211
SetBreakStatus()212 void CFX_TxtBreak::SetBreakStatus() {
213 if (m_bPagination)
214 return;
215
216 int32_t iCount = m_pCurLine->CountChars();
217 if (iCount < 1)
218 return;
219
220 CFX_TxtChar* pTC = m_pCurLine->GetCharPtr(iCount - 1);
221 if (pTC->m_dwStatus == 0)
222 pTC->m_dwStatus = FX_TXTBREAK_PieceBreak;
223 }
224
SetHorizontalScale(int32_t iScale)225 void CFX_TxtBreak::SetHorizontalScale(int32_t iScale) {
226 if (iScale < 0)
227 iScale = 0;
228 if (iScale == m_iHorScale)
229 return;
230
231 SetBreakStatus();
232 m_iHorScale = iScale;
233 }
234
SetCharSpace(FX_FLOAT fCharSpace)235 void CFX_TxtBreak::SetCharSpace(FX_FLOAT fCharSpace) {
236 m_iCharSpace = FXSYS_round(fCharSpace * 20000.0f);
237 }
238
239 static const int32_t gs_FX_TxtLineRotations[8] = {0, 3, 1, 0, 2, 1, 3, 2};
240
GetLineRotation(uint32_t dwStyles) const241 int32_t CFX_TxtBreak::GetLineRotation(uint32_t dwStyles) const {
242 return gs_FX_TxtLineRotations[(dwStyles & 0x0E) >> 1];
243 }
244
GetLastChar(int32_t index,bool bOmitChar) const245 CFX_TxtChar* CFX_TxtBreak::GetLastChar(int32_t index, bool bOmitChar) const {
246 std::vector<CFX_TxtChar>& ca = *m_pCurLine->m_pLineChars.get();
247 int32_t iCount = pdfium::CollectionSize<int32_t>(ca);
248 if (index < 0 || index >= iCount)
249 return nullptr;
250
251 int32_t iStart = iCount - 1;
252 while (iStart > -1) {
253 CFX_TxtChar* pTC = &ca[iStart--];
254 if (bOmitChar && pTC->GetCharType() == FX_CHARTYPE_Combination)
255 continue;
256 if (--index < 0)
257 return pTC;
258 }
259 return nullptr;
260 }
261
GetTxtLine() const262 CFX_TxtLine* CFX_TxtBreak::GetTxtLine() const {
263 if (m_iReady == 1)
264 return m_pTxtLine1.get();
265 if (m_iReady == 2)
266 return m_pTxtLine2.get();
267 return nullptr;
268 }
269
GetTxtPieces() const270 CFX_TxtPieceArray* CFX_TxtBreak::GetTxtPieces() const {
271 CFX_TxtLine* pTxtLine = GetTxtLine();
272 return pTxtLine ? pTxtLine->m_pLinePieces.get() : nullptr;
273 }
274
GetUnifiedCharType(FX_CHARTYPE chartype) const275 inline FX_CHARTYPE CFX_TxtBreak::GetUnifiedCharType(
276 FX_CHARTYPE chartype) const {
277 return chartype >= FX_CHARTYPE_ArabicAlef ? FX_CHARTYPE_Arabic : chartype;
278 }
279
ResetArabicContext()280 void CFX_TxtBreak::ResetArabicContext() {
281 if (m_bArabicContext) {
282 m_bCurRTL = m_iCurArabicContext > 1;
283 m_iCurAlignment = m_iCurArabicContext > 1 ? FX_TXTLINEALIGNMENT_Right
284 : FX_TXTLINEALIGNMENT_Left;
285 m_iCurAlignment |= (m_iAlignment & FX_TXTLINEALIGNMENT_HigherMask);
286 m_bArabicNumber = m_iArabicContext >= 1 && m_bArabicShapes;
287 } else {
288 if (m_bPagination) {
289 m_bCurRTL = false;
290 m_iCurAlignment = 0;
291 } else {
292 m_bCurRTL = m_bRTL;
293 m_iCurAlignment = m_iAlignment;
294 }
295 if (m_bRTL)
296 m_bArabicNumber = m_iArabicContext >= 1;
297 else
298 m_bArabicNumber = m_iArabicContext > 1;
299 m_bArabicNumber = m_bArabicNumber && m_bArabicShapes;
300 }
301 m_bArabicComma = m_bArabicNumber;
302 ResetContextCharStyles();
303 }
304
AppendChar_PageLoad(CFX_TxtChar * pCurChar,uint32_t dwProps)305 void CFX_TxtBreak::AppendChar_PageLoad(CFX_TxtChar* pCurChar,
306 uint32_t dwProps) {
307 if (!m_bPagination) {
308 pCurChar->m_dwStatus = 0;
309 pCurChar->m_pUserData = m_pUserData;
310 }
311 if (m_bArabicContext || m_bArabicShapes) {
312 int32_t iBidiCls = (dwProps & FX_BIDICLASSBITSMASK) >> FX_BIDICLASSBITS;
313 int32_t iArabicContext =
314 (iBidiCls == FX_BIDICLASS_R || iBidiCls == FX_BIDICLASS_AL)
315 ? 2
316 : ((iBidiCls == FX_BIDICLASS_L || iBidiCls == FX_BIDICLASS_S) ? 0
317 : 1);
318 if (iArabicContext != m_iArabicContext && iArabicContext != 1) {
319 m_iArabicContext = iArabicContext;
320 if (m_iCurArabicContext == 1)
321 m_iCurArabicContext = iArabicContext;
322
323 ResetArabicContext();
324 if (!m_bPagination) {
325 CFX_TxtChar* pLastChar = GetLastChar(1, false);
326 if (pLastChar && pLastChar->m_dwStatus < 1)
327 pLastChar->m_dwStatus = FX_TXTBREAK_PieceBreak;
328 }
329 }
330 }
331 pCurChar->m_dwCharStyles = m_dwContextCharStyles;
332 }
333
AppendChar_Combination(CFX_TxtChar * pCurChar,int32_t iRotation)334 uint32_t CFX_TxtBreak::AppendChar_Combination(CFX_TxtChar* pCurChar,
335 int32_t iRotation) {
336 FX_WCHAR wch = pCurChar->m_wCharCode;
337 FX_WCHAR wForm;
338 int32_t iCharWidth = 0;
339 pCurChar->m_iCharWidth = -1;
340 if (m_bCombText) {
341 iCharWidth = m_iCombWidth;
342 } else {
343 if (m_bVertical != FX_IsOdd(iRotation)) {
344 iCharWidth = 1000;
345 } else {
346 wForm = wch;
347 if (!m_bPagination) {
348 CFX_TxtChar* pLastChar = GetLastChar(0, false);
349 if (pLastChar &&
350 (pLastChar->m_dwCharStyles & FX_TXTCHARSTYLE_ArabicShadda) == 0) {
351 bool bShadda = false;
352 if (wch == 0x0651) {
353 FX_WCHAR wLast = pLastChar->m_wCharCode;
354 if (wLast >= 0x064C && wLast <= 0x0650) {
355 wForm = FX_GetArabicFromShaddaTable(wLast);
356 bShadda = true;
357 }
358 } else if (wch >= 0x064C && wch <= 0x0650) {
359 if (pLastChar->m_wCharCode == 0x0651) {
360 wForm = FX_GetArabicFromShaddaTable(wch);
361 bShadda = true;
362 }
363 }
364 if (bShadda) {
365 pLastChar->m_dwCharStyles |= FX_TXTCHARSTYLE_ArabicShadda;
366 pLastChar->m_iCharWidth = 0;
367 pCurChar->m_dwCharStyles |= FX_TXTCHARSTYLE_ArabicShadda;
368 }
369 }
370 }
371 if (!m_pFont->GetCharWidth(wForm, iCharWidth, false))
372 iCharWidth = 0;
373 }
374 iCharWidth *= m_iFontSize;
375 iCharWidth = iCharWidth * m_iHorScale / 100;
376 }
377 pCurChar->m_iCharWidth = -iCharWidth;
378 return FX_TXTBREAK_None;
379 }
380
AppendChar_Tab(CFX_TxtChar * pCurChar,int32_t iRotation)381 uint32_t CFX_TxtBreak::AppendChar_Tab(CFX_TxtChar* pCurChar,
382 int32_t iRotation) {
383 m_eCharType = FX_CHARTYPE_Tab;
384 if ((m_dwLayoutStyles & FX_TXTLAYOUTSTYLE_ExpandTab) == 0)
385 return FX_TXTBREAK_None;
386
387 int32_t& iLineWidth = m_pCurLine->m_iWidth;
388 int32_t iCharWidth;
389 if (m_bCombText) {
390 iCharWidth = m_iCombWidth;
391 } else {
392 if (m_bEquidistant) {
393 iCharWidth = iLineWidth;
394 iCharWidth = m_iTabWidth * (iCharWidth / m_iTabWidth + 1) - iCharWidth;
395 if (iCharWidth < FX_TXTBREAK_MinimumTabWidth)
396 iCharWidth += m_iTabWidth;
397 } else {
398 iCharWidth = m_iTabWidth;
399 }
400 }
401
402 pCurChar->m_iCharWidth = iCharWidth;
403 iLineWidth += iCharWidth;
404 if (!m_bSingleLine && iLineWidth >= m_iLineWidth + m_iTolerance)
405 return EndBreak(FX_TXTBREAK_LineBreak);
406
407 return FX_TXTBREAK_None;
408 }
409
AppendChar_Control(CFX_TxtChar * pCurChar,int32_t iRotation)410 uint32_t CFX_TxtBreak::AppendChar_Control(CFX_TxtChar* pCurChar,
411 int32_t iRotation) {
412 m_eCharType = FX_CHARTYPE_Control;
413 uint32_t dwRet = FX_TXTBREAK_None;
414 if (!m_bSingleLine) {
415 FX_WCHAR wch = pCurChar->m_wCharCode;
416 switch (wch) {
417 case L'\v':
418 case 0x2028:
419 dwRet = FX_TXTBREAK_LineBreak;
420 break;
421 case L'\f':
422 dwRet = FX_TXTBREAK_PageBreak;
423 break;
424 case 0x2029:
425 dwRet = FX_TXTBREAK_ParagraphBreak;
426 break;
427 default:
428 if (wch == m_wParagBreakChar)
429 dwRet = FX_TXTBREAK_ParagraphBreak;
430 break;
431 }
432 if (dwRet != FX_TXTBREAK_None)
433 dwRet = EndBreak(dwRet);
434 }
435 return dwRet;
436 }
437
AppendChar_Arabic(CFX_TxtChar * pCurChar,int32_t iRotation)438 uint32_t CFX_TxtBreak::AppendChar_Arabic(CFX_TxtChar* pCurChar,
439 int32_t iRotation) {
440 FX_CHARTYPE chartype = pCurChar->GetCharType();
441 int32_t& iLineWidth = m_pCurLine->m_iWidth;
442 FX_WCHAR wForm;
443 int32_t iCharWidth = 0;
444 CFX_TxtChar* pLastChar = nullptr;
445 bool bAlef = false;
446 if (!m_bCombText && m_eCharType >= FX_CHARTYPE_ArabicAlef &&
447 m_eCharType <= FX_CHARTYPE_ArabicDistortion) {
448 pLastChar = GetLastChar(1);
449 if (pLastChar) {
450 iCharWidth = pLastChar->m_iCharWidth;
451 if (iCharWidth > 0)
452 iLineWidth -= iCharWidth;
453
454 CFX_Char* pPrevChar = GetLastChar(2);
455 wForm = pdfium::arabic::GetFormChar(pLastChar, pPrevChar, pCurChar);
456 bAlef = (wForm == 0xFEFF &&
457 pLastChar->GetCharType() == FX_CHARTYPE_ArabicAlef);
458 int32_t iLastRotation = pLastChar->m_nRotation + m_iLineRotation;
459 if (m_bVertical && (pLastChar->m_dwCharProps & 0x8000) != 0)
460 iLastRotation++;
461 if (m_bVertical != FX_IsOdd(iLastRotation))
462 iCharWidth = 1000;
463 else
464 m_pFont->GetCharWidth(wForm, iCharWidth, false);
465
466 if (wForm == 0xFEFF)
467 iCharWidth = m_iDefChar;
468
469 iCharWidth *= m_iFontSize;
470 iCharWidth = iCharWidth * m_iHorScale / 100;
471 pLastChar->m_iCharWidth = iCharWidth;
472 iLineWidth += iCharWidth;
473 iCharWidth = 0;
474 }
475 }
476
477 m_eCharType = chartype;
478 wForm = pdfium::arabic::GetFormChar(pCurChar, bAlef ? nullptr : pLastChar,
479 nullptr);
480 if (m_bCombText) {
481 iCharWidth = m_iCombWidth;
482 } else {
483 if (m_bVertical != FX_IsOdd(iRotation))
484 iCharWidth = 1000;
485 else
486 m_pFont->GetCharWidth(wForm, iCharWidth, false);
487
488 if (wForm == 0xFEFF)
489 iCharWidth = m_iDefChar;
490
491 iCharWidth *= m_iFontSize;
492 iCharWidth = iCharWidth * m_iHorScale / 100;
493 }
494 pCurChar->m_iCharWidth = iCharWidth;
495 iLineWidth += iCharWidth;
496 m_pCurLine->m_iArabicChars++;
497 if (!m_bSingleLine && iLineWidth > m_iLineWidth + m_iTolerance)
498 return EndBreak(FX_TXTBREAK_LineBreak);
499 return FX_TXTBREAK_None;
500 }
501
AppendChar_Others(CFX_TxtChar * pCurChar,int32_t iRotation)502 uint32_t CFX_TxtBreak::AppendChar_Others(CFX_TxtChar* pCurChar,
503 int32_t iRotation) {
504 uint32_t dwProps = pCurChar->m_dwCharProps;
505 FX_CHARTYPE chartype = pCurChar->GetCharType();
506 int32_t& iLineWidth = m_pCurLine->m_iWidth;
507 int32_t iCharWidth = 0;
508 m_eCharType = chartype;
509 FX_WCHAR wch = pCurChar->m_wCharCode;
510 FX_WCHAR wForm = wch;
511 if (chartype == FX_CHARTYPE_Numeric) {
512 if (m_bArabicNumber) {
513 wForm = wch + 0x0630;
514 pCurChar->m_dwCharStyles |= FX_TXTCHARSTYLE_ArabicIndic;
515 }
516 } else if (wch == L',') {
517 if (m_bArabicShapes && m_iCurArabicContext > 0) {
518 wForm = 0x060C;
519 pCurChar->m_dwCharStyles |= FX_TXTCHARSTYLE_ArabicComma;
520 }
521 } else if (m_bCurRTL || m_bVertical) {
522 wForm = FX_GetMirrorChar(wch, dwProps, m_bCurRTL, m_bVertical);
523 }
524
525 if (m_bCombText) {
526 iCharWidth = m_iCombWidth;
527 } else {
528 if (m_bVertical != FX_IsOdd(iRotation))
529 iCharWidth = 1000;
530 else if (!m_pFont->GetCharWidth(wForm, iCharWidth, false))
531 iCharWidth = m_iDefChar;
532
533 iCharWidth *= m_iFontSize;
534 iCharWidth = iCharWidth * m_iHorScale / 100;
535 }
536
537 iCharWidth += m_iCharSpace;
538 pCurChar->m_iCharWidth = iCharWidth;
539 iLineWidth += iCharWidth;
540 bool bBreak = (chartype != FX_CHARTYPE_Space ||
541 (m_dwPolicies & FX_TXTBREAKPOLICY_SpaceBreak) != 0);
542 if (!m_bSingleLine && bBreak && iLineWidth > m_iLineWidth + m_iTolerance)
543 return EndBreak(FX_TXTBREAK_LineBreak);
544
545 return FX_TXTBREAK_None;
546 }
547
AppendChar(FX_WCHAR wch)548 uint32_t CFX_TxtBreak::AppendChar(FX_WCHAR wch) {
549 uint32_t dwProps = kTextLayoutCodeProperties[static_cast<uint16_t>(wch)];
550 FX_CHARTYPE chartype = GetCharTypeFromProp(dwProps);
551 m_pCurLine->m_pLineChars->emplace_back();
552
553 CFX_TxtChar* pCurChar = &m_pCurLine->m_pLineChars->back();
554 pCurChar->m_wCharCode = static_cast<uint16_t>(wch);
555 pCurChar->m_nRotation = m_iCharRotation;
556 pCurChar->m_dwCharProps = dwProps;
557 pCurChar->m_dwCharStyles = 0;
558 pCurChar->m_iCharWidth = 0;
559 pCurChar->m_iHorizontalScale = m_iHorScale;
560 pCurChar->m_iVerticalScale = 100;
561 pCurChar->m_dwStatus = 0;
562 pCurChar->m_iBidiClass = 0;
563 pCurChar->m_iBidiLevel = 0;
564 pCurChar->m_iBidiPos = 0;
565 pCurChar->m_iBidiOrder = 0;
566 pCurChar->m_pUserData = nullptr;
567 AppendChar_PageLoad(pCurChar, dwProps);
568 uint32_t dwRet1 = FX_TXTBREAK_None;
569 if (chartype != FX_CHARTYPE_Combination &&
570 GetUnifiedCharType(m_eCharType) != GetUnifiedCharType(chartype) &&
571 m_eCharType != FX_CHARTYPE_Unknown &&
572 m_pCurLine->m_iWidth > m_iLineWidth + m_iTolerance && !m_bSingleLine &&
573 (m_eCharType != FX_CHARTYPE_Space || chartype != FX_CHARTYPE_Control)) {
574 dwRet1 = EndBreak(FX_TXTBREAK_LineBreak);
575 int32_t iCount = m_pCurLine->CountChars();
576 if (iCount > 0)
577 pCurChar = &(*m_pCurLine->m_pLineChars)[iCount - 1];
578 }
579
580 int32_t iRotation = m_iRotation;
581 if (m_bVertical && (dwProps & 0x8000) != 0)
582 iRotation = (iRotation + 1) % 4;
583
584 uint32_t dwRet2 =
585 (this->*g_FX_TxtBreak_lpfAppendChar[chartype >> FX_CHARTYPEBITS])(
586 pCurChar, iRotation);
587 return std::max(dwRet1, dwRet2);
588 }
589
EndBreak_UpdateArabicShapes()590 void CFX_TxtBreak::EndBreak_UpdateArabicShapes() {
591 ASSERT(m_bArabicShapes);
592 int32_t iCount = m_pCurLine->CountChars();
593 if (iCount < 2)
594 return;
595
596 int32_t& iLineWidth = m_pCurLine->m_iWidth;
597 CFX_TxtChar* pCur = m_pCurLine->GetCharPtr(0);
598 bool bPrevNum = (pCur->m_dwCharStyles & FX_TXTCHARSTYLE_ArabicIndic) != 0;
599 pCur = m_pCurLine->GetCharPtr(1);
600 FX_WCHAR wch, wForm;
601 bool bNextNum;
602 int32_t i = 1;
603 int32_t iCharWidth;
604 int32_t iRotation;
605 CFX_TxtChar* pNext;
606 do {
607 i++;
608 if (i < iCount) {
609 pNext = m_pCurLine->GetCharPtr(i);
610 bNextNum = (pNext->m_dwCharStyles & FX_TXTCHARSTYLE_ArabicIndic) != 0;
611 } else {
612 pNext = nullptr;
613 bNextNum = false;
614 }
615
616 wch = pCur->m_wCharCode;
617 if (wch == L'.') {
618 if (bPrevNum && bNextNum) {
619 iRotation = m_iRotation;
620 if (m_bVertical && (pCur->m_dwCharProps & 0x8000) != 0)
621 iRotation = ((iRotation + 1) & 0x03);
622
623 wForm = wch == L'.' ? 0x066B : 0x066C;
624 iLineWidth -= pCur->m_iCharWidth;
625 if (m_bCombText) {
626 iCharWidth = m_iCombWidth;
627 } else {
628 if (m_bVertical != FX_IsOdd(iRotation))
629 iCharWidth = 1000;
630 else if (!m_pFont->GetCharWidth(wForm, iCharWidth, false))
631 iCharWidth = m_iDefChar;
632
633 iCharWidth *= m_iFontSize;
634 iCharWidth = iCharWidth * m_iHorScale / 100;
635 }
636 pCur->m_iCharWidth = iCharWidth;
637 iLineWidth += iCharWidth;
638 }
639 }
640 bPrevNum = (pCur->m_dwCharStyles & FX_TXTCHARSTYLE_ArabicIndic) != 0;
641 pCur = pNext;
642 } while (i < iCount);
643 }
644
EndBreak_SplitLine(CFX_TxtLine * pNextLine,bool bAllChars,uint32_t dwStatus)645 bool CFX_TxtBreak::EndBreak_SplitLine(CFX_TxtLine* pNextLine,
646 bool bAllChars,
647 uint32_t dwStatus) {
648 int32_t iCount = m_pCurLine->CountChars();
649 bool bDone = false;
650 CFX_TxtChar* pTC;
651 if (!m_bSingleLine && m_pCurLine->m_iWidth > m_iLineWidth + m_iTolerance) {
652 pTC = m_pCurLine->GetCharPtr(iCount - 1);
653 switch (pTC->GetCharType()) {
654 case FX_CHARTYPE_Tab:
655 case FX_CHARTYPE_Control:
656 break;
657 case FX_CHARTYPE_Space:
658 if ((m_dwPolicies & FX_TXTBREAKPOLICY_SpaceBreak) != 0) {
659 SplitTextLine(m_pCurLine, pNextLine, !m_bPagination && bAllChars);
660 bDone = true;
661 }
662 break;
663 default:
664 SplitTextLine(m_pCurLine, pNextLine, !m_bPagination && bAllChars);
665 bDone = true;
666 break;
667 }
668 }
669
670 iCount = m_pCurLine->CountChars();
671 CFX_TxtPieceArray* pCurPieces = m_pCurLine->m_pLinePieces.get();
672 CFX_TxtPiece tp;
673 if (m_bPagination) {
674 tp.m_dwStatus = dwStatus;
675 tp.m_iStartPos = m_pCurLine->m_iStart;
676 tp.m_iWidth = m_pCurLine->m_iWidth;
677 tp.m_iStartChar = 0;
678 tp.m_iChars = iCount;
679 tp.m_pChars = m_pCurLine->m_pLineChars.get();
680 tp.m_pUserData = m_pUserData;
681 pTC = m_pCurLine->GetCharPtr(0);
682 tp.m_dwCharStyles = pTC->m_dwCharStyles;
683 tp.m_iHorizontalScale = pTC->m_iHorizontalScale;
684 tp.m_iVerticalScale = pTC->m_iVerticalScale;
685 pCurPieces->Add(tp);
686 m_pCurLine = pNextLine;
687 m_eCharType = FX_CHARTYPE_Unknown;
688 return true;
689 }
690 if (bAllChars && !bDone) {
691 int32_t iEndPos = m_pCurLine->m_iWidth;
692 GetBreakPos(*m_pCurLine->m_pLineChars.get(), iEndPos, bAllChars, true);
693 }
694 return false;
695 }
696
EndBreak_BidiLine(std::deque<FX_TPO> * tpos,uint32_t dwStatus)697 void CFX_TxtBreak::EndBreak_BidiLine(std::deque<FX_TPO>* tpos,
698 uint32_t dwStatus) {
699 CFX_TxtPiece tp;
700 FX_TPO tpo;
701 CFX_TxtChar* pTC;
702 int32_t i;
703 int32_t j;
704 std::vector<CFX_TxtChar>& chars = *m_pCurLine->m_pLineChars.get();
705 int32_t iCount = m_pCurLine->CountChars();
706 bool bDone = (m_pCurLine->m_iArabicChars > 0 || m_bCurRTL);
707 if (!m_bPagination && bDone) {
708 int32_t iBidiNum = 0;
709 for (i = 0; i < iCount; i++) {
710 pTC = &chars[i];
711 pTC->m_iBidiPos = i;
712 if (pTC->GetCharType() != FX_CHARTYPE_Control)
713 iBidiNum = i;
714 if (i == 0)
715 pTC->m_iBidiLevel = 1;
716 }
717 FX_BidiLine(chars, iBidiNum + 1, m_bCurRTL ? 1 : 0);
718 }
719
720 CFX_TxtPieceArray* pCurPieces = m_pCurLine->m_pLinePieces.get();
721 if (!m_bPagination &&
722 (bDone || (m_dwLayoutStyles & FX_TXTLAYOUTSTYLE_MutipleFormat) != 0)) {
723 tp.m_dwStatus = FX_TXTBREAK_PieceBreak;
724 tp.m_iStartPos = m_pCurLine->m_iStart;
725 tp.m_pChars = m_pCurLine->m_pLineChars.get();
726 int32_t iBidiLevel = -1;
727 int32_t iCharWidth;
728 i = 0;
729 j = -1;
730 while (i < iCount) {
731 pTC = &chars[i];
732 if (iBidiLevel < 0) {
733 iBidiLevel = pTC->m_iBidiLevel;
734 tp.m_iWidth = 0;
735 tp.m_iBidiLevel = iBidiLevel;
736 tp.m_iBidiPos = pTC->m_iBidiOrder;
737 tp.m_dwCharStyles = pTC->m_dwCharStyles;
738 tp.m_pUserData = pTC->m_pUserData;
739 tp.m_iHorizontalScale = pTC->m_iHorizontalScale;
740 tp.m_iVerticalScale = pTC->m_iVerticalScale;
741 tp.m_dwStatus = FX_TXTBREAK_PieceBreak;
742 }
743 if (iBidiLevel != pTC->m_iBidiLevel || pTC->m_dwStatus != 0) {
744 if (iBidiLevel == pTC->m_iBidiLevel) {
745 tp.m_dwStatus = pTC->m_dwStatus;
746 iCharWidth = pTC->m_iCharWidth;
747 if (iCharWidth > 0)
748 tp.m_iWidth += iCharWidth;
749
750 i++;
751 }
752 tp.m_iChars = i - tp.m_iStartChar;
753 pCurPieces->Add(tp);
754 tp.m_iStartPos += tp.m_iWidth;
755 tp.m_iStartChar = i;
756 tpo.index = ++j;
757 tpo.pos = tp.m_iBidiPos;
758 tpos->push_back(tpo);
759 iBidiLevel = -1;
760 } else {
761 iCharWidth = pTC->m_iCharWidth;
762 if (iCharWidth > 0)
763 tp.m_iWidth += iCharWidth;
764
765 i++;
766 }
767 }
768 if (i > tp.m_iStartChar) {
769 tp.m_dwStatus = dwStatus;
770 tp.m_iChars = i - tp.m_iStartChar;
771 pCurPieces->Add(tp);
772 tpo.index = ++j;
773 tpo.pos = tp.m_iBidiPos;
774 tpos->push_back(tpo);
775 }
776 if (j > -1) {
777 if (j > 0) {
778 std::sort(tpos->begin(), tpos->end());
779 int32_t iStartPos = 0;
780 for (i = 0; i <= j; i++) {
781 tpo = (*tpos)[i];
782 CFX_TxtPiece& ttp = pCurPieces->GetAt(tpo.index);
783 ttp.m_iStartPos = iStartPos;
784 iStartPos += ttp.m_iWidth;
785 }
786 }
787 CFX_TxtPiece& ttp = pCurPieces->GetAt(j);
788 ttp.m_dwStatus = dwStatus;
789 }
790 } else {
791 tp.m_dwStatus = dwStatus;
792 tp.m_iStartPos = m_pCurLine->m_iStart;
793 tp.m_iWidth = m_pCurLine->m_iWidth;
794 tp.m_iStartChar = 0;
795 tp.m_iChars = iCount;
796 tp.m_pChars = m_pCurLine->m_pLineChars.get();
797 tp.m_pUserData = m_pUserData;
798 pTC = &chars[0];
799 tp.m_dwCharStyles = pTC->m_dwCharStyles;
800 tp.m_iHorizontalScale = pTC->m_iHorizontalScale;
801 tp.m_iVerticalScale = pTC->m_iVerticalScale;
802 pCurPieces->Add(tp);
803 tpos->push_back({0, 0});
804 }
805 }
806
EndBreak_Alignment(const std::deque<FX_TPO> & tpos,bool bAllChars,uint32_t dwStatus)807 void CFX_TxtBreak::EndBreak_Alignment(const std::deque<FX_TPO>& tpos,
808 bool bAllChars,
809 uint32_t dwStatus) {
810 int32_t iNetWidth = m_pCurLine->m_iWidth;
811 int32_t iGapChars = 0;
812 int32_t iCharWidth;
813 CFX_TxtPieceArray* pCurPieces = m_pCurLine->m_pLinePieces.get();
814 int32_t i;
815 int32_t j;
816 int32_t iCount = pCurPieces->GetSize();
817 bool bFind = false;
818 FX_TPO tpo;
819 CFX_TxtChar* pTC;
820 FX_CHARTYPE chartype;
821 for (i = iCount - 1; i > -1; i--) {
822 tpo = tpos[i];
823 CFX_TxtPiece& ttp = pCurPieces->GetAt(tpo.index);
824 if (!bFind)
825 iNetWidth = ttp.GetEndPos();
826
827 bool bArabic = FX_IsOdd(ttp.m_iBidiLevel);
828 j = bArabic ? 0 : ttp.m_iChars - 1;
829 while (j > -1 && j < ttp.m_iChars) {
830 pTC = ttp.GetCharPtr(j);
831 if (pTC->m_nBreakType == FX_LBT_DIRECT_BRK)
832 iGapChars++;
833 if (!bFind || !bAllChars) {
834 chartype = pTC->GetCharType();
835 if (chartype == FX_CHARTYPE_Space || chartype == FX_CHARTYPE_Control) {
836 if (!bFind) {
837 iCharWidth = pTC->m_iCharWidth;
838 if (bAllChars && iCharWidth > 0)
839 iNetWidth -= iCharWidth;
840 }
841 } else {
842 bFind = true;
843 if (!bAllChars)
844 break;
845 }
846 }
847 j += bArabic ? 1 : -1;
848 }
849 if (!bAllChars && bFind)
850 break;
851 }
852
853 int32_t iOffset = m_iLineWidth - iNetWidth;
854 int32_t iLowerAlignment = (m_iCurAlignment & FX_TXTLINEALIGNMENT_LowerMask);
855 int32_t iHigherAlignment = (m_iCurAlignment & FX_TXTLINEALIGNMENT_HigherMask);
856 if (iGapChars > 0 && (iHigherAlignment == FX_TXTLINEALIGNMENT_Distributed ||
857 (iHigherAlignment == FX_TXTLINEALIGNMENT_Justified &&
858 dwStatus != FX_TXTBREAK_ParagraphBreak))) {
859 int32_t iStart = -1;
860 for (i = 0; i < iCount; i++) {
861 tpo = tpos[i];
862 CFX_TxtPiece& ttp = pCurPieces->GetAt(tpo.index);
863 if (iStart < -1)
864 iStart = ttp.m_iStartPos;
865 else
866 ttp.m_iStartPos = iStart;
867
868 for (j = 0; j < ttp.m_iChars; j++) {
869 pTC = ttp.GetCharPtr(j);
870 if (pTC->m_nBreakType != FX_LBT_DIRECT_BRK || pTC->m_iCharWidth < 0)
871 continue;
872
873 int32_t k = iOffset / iGapChars;
874 pTC->m_iCharWidth += k;
875 ttp.m_iWidth += k;
876 iOffset -= k;
877 iGapChars--;
878 if (iGapChars < 1)
879 break;
880 }
881 iStart += ttp.m_iWidth;
882 }
883 } else if (iLowerAlignment > FX_TXTLINEALIGNMENT_Left) {
884 if (iLowerAlignment == FX_TXTLINEALIGNMENT_Center)
885 iOffset /= 2;
886 if (iOffset > 0) {
887 for (i = 0; i < iCount; i++) {
888 CFX_TxtPiece& ttp = pCurPieces->GetAt(i);
889 ttp.m_iStartPos += iOffset;
890 }
891 }
892 }
893 }
894
EndBreak(uint32_t dwStatus)895 uint32_t CFX_TxtBreak::EndBreak(uint32_t dwStatus) {
896 ASSERT(dwStatus >= FX_TXTBREAK_PieceBreak &&
897 dwStatus <= FX_TXTBREAK_PageBreak);
898 CFX_TxtPieceArray* pCurPieces = m_pCurLine->m_pLinePieces.get();
899 int32_t iCount = pCurPieces->GetSize();
900 if (iCount > 0) {
901 CFX_TxtPiece* pLastPiece = pCurPieces->GetPtrAt(--iCount);
902 if (dwStatus > FX_TXTBREAK_PieceBreak)
903 pLastPiece->m_dwStatus = dwStatus;
904 else
905 dwStatus = pLastPiece->m_dwStatus;
906 return dwStatus;
907 } else {
908 CFX_TxtLine* pLastLine = GetTxtLine();
909 if (pLastLine) {
910 pCurPieces = pLastLine->m_pLinePieces.get();
911 iCount = pCurPieces->GetSize();
912 if (iCount-- > 0) {
913 CFX_TxtPiece* pLastPiece = pCurPieces->GetPtrAt(iCount);
914 if (dwStatus > FX_TXTBREAK_PieceBreak)
915 pLastPiece->m_dwStatus = dwStatus;
916 else
917 dwStatus = pLastPiece->m_dwStatus;
918 return dwStatus;
919 }
920 return FX_TXTBREAK_None;
921 }
922
923 iCount = m_pCurLine->CountChars();
924 if (iCount < 1)
925 return FX_TXTBREAK_None;
926 if (!m_bPagination) {
927 CFX_TxtChar* pTC = m_pCurLine->GetCharPtr(iCount - 1);
928 pTC->m_dwStatus = dwStatus;
929 }
930 if (dwStatus <= FX_TXTBREAK_PieceBreak)
931 return dwStatus;
932 }
933
934 m_iReady = (m_pCurLine == m_pTxtLine1.get()) ? 1 : 2;
935 CFX_TxtLine* pNextLine =
936 (m_pCurLine == m_pTxtLine1.get()) ? m_pTxtLine2.get() : m_pTxtLine1.get();
937 bool bAllChars = (m_iCurAlignment > FX_TXTLINEALIGNMENT_Right);
938 if (m_bArabicShapes)
939 EndBreak_UpdateArabicShapes();
940
941 if (!EndBreak_SplitLine(pNextLine, bAllChars, dwStatus)) {
942 std::deque<FX_TPO> tpos;
943 EndBreak_BidiLine(&tpos, dwStatus);
944 if (!m_bPagination && m_iCurAlignment > FX_TXTLINEALIGNMENT_Left)
945 EndBreak_Alignment(tpos, bAllChars, dwStatus);
946 }
947
948 m_pCurLine = pNextLine;
949 CFX_Char* pTC = GetLastChar(0, false);
950 m_eCharType = pTC ? pTC->GetCharType() : FX_CHARTYPE_Unknown;
951 if (dwStatus == FX_TXTBREAK_ParagraphBreak) {
952 m_iArabicContext = m_iCurArabicContext = 1;
953 ResetArabicContext();
954 }
955 return dwStatus;
956 }
957
GetBreakPos(std::vector<CFX_TxtChar> & ca,int32_t & iEndPos,bool bAllChars,bool bOnlyBrk)958 int32_t CFX_TxtBreak::GetBreakPos(std::vector<CFX_TxtChar>& ca,
959 int32_t& iEndPos,
960 bool bAllChars,
961 bool bOnlyBrk) {
962 int32_t iLength = pdfium::CollectionSize<int32_t>(ca) - 1;
963 if (iLength < 1)
964 return iLength;
965
966 int32_t iBreak = -1;
967 int32_t iBreakPos = -1;
968 int32_t iIndirect = -1;
969 int32_t iIndirectPos = -1;
970 int32_t iLast = -1;
971 int32_t iLastPos = -1;
972 if (m_bSingleLine || iEndPos <= m_iLineWidth) {
973 if (!bAllChars)
974 return iLength;
975
976 iBreak = iLength;
977 iBreakPos = iEndPos;
978 }
979
980 bool bSpaceBreak = (m_dwPolicies & FX_TXTBREAKPOLICY_SpaceBreak) != 0;
981 bool bNumberBreak = (m_dwPolicies & FX_TXTBREAKPOLICY_NumberBreak) != 0;
982 FX_LINEBREAKTYPE eType;
983 uint32_t nCodeProp;
984 uint32_t nCur;
985 uint32_t nNext;
986 CFX_Char* pCur = &ca[iLength--];
987 if (bAllChars)
988 pCur->m_nBreakType = FX_LBT_UNKNOWN;
989
990 nCodeProp = pCur->m_dwCharProps;
991 nNext = nCodeProp & 0x003F;
992 int32_t iCharWidth = pCur->m_iCharWidth;
993 if (iCharWidth > 0)
994 iEndPos -= iCharWidth;
995
996 while (iLength >= 0) {
997 pCur = &ca[iLength];
998 nCodeProp = pCur->m_dwCharProps;
999 nCur = nCodeProp & 0x003F;
1000 if (nCur == FX_CBP_SP) {
1001 if (nNext == FX_CBP_SP)
1002 eType = bSpaceBreak ? FX_LBT_DIRECT_BRK : FX_LBT_PROHIBITED_BRK;
1003 else
1004 eType = gs_FX_LineBreak_PairTable[nCur][nNext];
1005 } else if (bNumberBreak && nCur == FX_CBP_NU && nNext == FX_CBP_NU) {
1006 eType = FX_LBT_DIRECT_BRK;
1007 } else {
1008 if (nNext == FX_CBP_SP)
1009 eType = FX_LBT_PROHIBITED_BRK;
1010 else
1011 eType = gs_FX_LineBreak_PairTable[nCur][nNext];
1012 }
1013 if (bAllChars)
1014 pCur->m_nBreakType = static_cast<uint8_t>(eType);
1015 if (!bOnlyBrk) {
1016 if (m_bSingleLine || iEndPos <= m_iLineWidth ||
1017 (nCur == FX_CBP_SP && !bSpaceBreak)) {
1018 if (eType == FX_LBT_DIRECT_BRK && iBreak < 0) {
1019 iBreak = iLength;
1020 iBreakPos = iEndPos;
1021 if (!bAllChars)
1022 return iLength;
1023 } else if (eType == FX_LBT_INDIRECT_BRK && iIndirect < 0) {
1024 iIndirect = iLength;
1025 iIndirectPos = iEndPos;
1026 }
1027 if (iLast < 0) {
1028 iLast = iLength;
1029 iLastPos = iEndPos;
1030 }
1031 }
1032 iCharWidth = pCur->m_iCharWidth;
1033 if (iCharWidth > 0)
1034 iEndPos -= iCharWidth;
1035 }
1036 nNext = nCodeProp & 0x003F;
1037 iLength--;
1038 }
1039 if (bOnlyBrk)
1040 return 0;
1041 if (iBreak > -1) {
1042 iEndPos = iBreakPos;
1043 return iBreak;
1044 }
1045 if (iIndirect > -1) {
1046 iEndPos = iIndirectPos;
1047 return iIndirect;
1048 }
1049 if (iLast > -1) {
1050 iEndPos = iLastPos;
1051 return iLast;
1052 }
1053 return 0;
1054 }
1055
SplitTextLine(CFX_TxtLine * pCurLine,CFX_TxtLine * pNextLine,bool bAllChars)1056 void CFX_TxtBreak::SplitTextLine(CFX_TxtLine* pCurLine,
1057 CFX_TxtLine* pNextLine,
1058 bool bAllChars) {
1059 ASSERT(pCurLine && pNextLine);
1060 int32_t iCount = pCurLine->CountChars();
1061 if (iCount < 2)
1062 return;
1063
1064 int32_t iEndPos = pCurLine->m_iWidth;
1065 std::vector<CFX_TxtChar>& curChars = *pCurLine->m_pLineChars;
1066 int32_t iCharPos = GetBreakPos(curChars, iEndPos, bAllChars, false);
1067 if (iCharPos < 0)
1068 iCharPos = 0;
1069
1070 iCharPos++;
1071 if (iCharPos >= iCount) {
1072 pNextLine->RemoveAll(true);
1073 CFX_Char* pTC = &curChars[iCharPos - 1];
1074 pTC->m_nBreakType = FX_LBT_UNKNOWN;
1075 return;
1076 }
1077
1078 // m_pLineChars is a unique_ptr<vector>. Assign the ref into nextChars
1079 // so we can change the m_pLineChars vector ...
1080 std::vector<CFX_TxtChar>& nextChars = *pNextLine->m_pLineChars;
1081 nextChars =
1082 std::vector<CFX_TxtChar>(curChars.begin() + iCharPos, curChars.end());
1083 curChars.erase(curChars.begin() + iCharPos, curChars.end());
1084 pCurLine->m_iWidth = iEndPos;
1085 CFX_TxtChar* pTC = &curChars[iCharPos - 1];
1086 pTC->m_nBreakType = FX_LBT_UNKNOWN;
1087 iCount = pdfium::CollectionSize<int>(nextChars);
1088 int32_t iWidth = 0;
1089 for (int32_t i = 0; i < iCount; i++) {
1090 if (nextChars[i].GetCharType() >= FX_CHARTYPE_ArabicAlef) {
1091 pCurLine->m_iArabicChars--;
1092 pNextLine->m_iArabicChars++;
1093 }
1094 int32_t iCharWidth = nextChars[i].m_iCharWidth;
1095 if (iCharWidth > 0)
1096 iWidth += iCharWidth;
1097 if (m_bPagination)
1098 continue;
1099
1100 nextChars[i].m_dwStatus = 0;
1101 }
1102 pNextLine->m_iWidth = iWidth;
1103 }
1104
CountBreakPieces() const1105 int32_t CFX_TxtBreak::CountBreakPieces() const {
1106 CFX_TxtPieceArray* pTxtPieces = GetTxtPieces();
1107 return pTxtPieces ? pTxtPieces->GetSize() : 0;
1108 }
1109
GetBreakPiece(int32_t index) const1110 const CFX_TxtPiece* CFX_TxtBreak::GetBreakPiece(int32_t index) const {
1111 CFX_TxtPieceArray* pTxtPieces = GetTxtPieces();
1112 if (!pTxtPieces)
1113 return nullptr;
1114 if (index < 0 || index >= pTxtPieces->GetSize())
1115 return nullptr;
1116 return pTxtPieces->GetPtrAt(index);
1117 }
1118
ClearBreakPieces()1119 void CFX_TxtBreak::ClearBreakPieces() {
1120 CFX_TxtLine* pTxtLine = GetTxtLine();
1121 if (pTxtLine)
1122 pTxtLine->RemoveAll(true);
1123 m_iReady = 0;
1124 }
1125
Reset()1126 void CFX_TxtBreak::Reset() {
1127 m_eCharType = FX_CHARTYPE_Unknown;
1128 m_iArabicContext = 1;
1129 m_iCurArabicContext = 1;
1130 ResetArabicContext();
1131 m_pTxtLine1->RemoveAll(true);
1132 m_pTxtLine2->RemoveAll(true);
1133 }
1134
1135 struct FX_FORMCHAR {
1136 uint16_t wch;
1137 uint16_t wForm;
1138 int32_t iWidth;
1139 };
1140
GetDisplayPos(const FX_TXTRUN * pTxtRun,FXTEXT_CHARPOS * pCharPos,bool bCharCode,CFX_WideString * pWSForms) const1141 int32_t CFX_TxtBreak::GetDisplayPos(const FX_TXTRUN* pTxtRun,
1142 FXTEXT_CHARPOS* pCharPos,
1143 bool bCharCode,
1144 CFX_WideString* pWSForms) const {
1145 if (!pTxtRun || pTxtRun->iLength < 1)
1146 return 0;
1147
1148 IFX_TxtAccess* pAccess = pTxtRun->pAccess;
1149 const FDE_TEXTEDITPIECE* pIdentity = pTxtRun->pIdentity;
1150 const FX_WCHAR* pStr = pTxtRun->wsStr.c_str();
1151 int32_t* pWidths = pTxtRun->pWidths;
1152 int32_t iLength = pTxtRun->iLength - 1;
1153 CFX_RetainPtr<CFGAS_GEFont> pFont = pTxtRun->pFont;
1154 uint32_t dwStyles = pTxtRun->dwStyles;
1155 CFX_RectF rtText(*pTxtRun->pRect);
1156 bool bRTLPiece = (pTxtRun->dwCharStyles & FX_TXTCHARSTYLE_OddBidiLevel) != 0;
1157 bool bArabicNumber =
1158 (pTxtRun->dwCharStyles & FX_TXTCHARSTYLE_ArabicNumber) != 0;
1159 bool bArabicComma =
1160 (pTxtRun->dwCharStyles & FX_TXTCHARSTYLE_ArabicComma) != 0;
1161 FX_FLOAT fFontSize = pTxtRun->fFontSize;
1162 int32_t iFontSize = FXSYS_round(fFontSize * 20.0f);
1163 int32_t iAscent = pFont->GetAscent();
1164 int32_t iDescent = pFont->GetDescent();
1165 int32_t iMaxHeight = iAscent - iDescent;
1166 FX_FLOAT fFontHeight = fFontSize;
1167 FX_FLOAT fAscent = fFontHeight * (FX_FLOAT)iAscent / (FX_FLOAT)iMaxHeight;
1168 FX_FLOAT fDescent = fFontHeight * (FX_FLOAT)iDescent / (FX_FLOAT)iMaxHeight;
1169 bool bVerticalDoc = (dwStyles & FX_TXTLAYOUTSTYLE_VerticalLayout) != 0;
1170 bool bVerticalChar = (dwStyles & FX_TXTLAYOUTSTYLE_VerticalChars) != 0;
1171 int32_t iRotation = GetLineRotation(dwStyles) + pTxtRun->iCharRotation;
1172 FX_FLOAT fX = rtText.left;
1173 FX_FLOAT fY;
1174 FX_FLOAT fCharWidth;
1175 FX_FLOAT fCharHeight;
1176 int32_t iHorScale = pTxtRun->iHorizontalScale;
1177 int32_t iVerScale = pTxtRun->iVerticalScale;
1178 bool bSkipSpace = pTxtRun->bSkipSpace;
1179 FX_FORMCHAR formChars[3];
1180 FX_FLOAT fYBase;
1181
1182 if (bVerticalDoc) {
1183 fX += (rtText.width - fFontSize) / 2.0f;
1184 fYBase = bRTLPiece ? rtText.bottom() : rtText.top;
1185 fY = fYBase;
1186 } else {
1187 if (bRTLPiece)
1188 fX = rtText.right();
1189
1190 fYBase = rtText.top + (rtText.height - fFontSize) / 2.0f;
1191 fY = fYBase + fAscent;
1192 }
1193
1194 int32_t iCount = 0;
1195 int32_t iNext = 0;
1196 FX_WCHAR wPrev = 0xFEFF;
1197 FX_WCHAR wNext = 0xFEFF;
1198 FX_WCHAR wForm = 0xFEFF;
1199 FX_WCHAR wLast = 0xFEFF;
1200 bool bShadda = false;
1201 bool bLam = false;
1202 for (int32_t i = 0; i <= iLength; i++) {
1203 int32_t iWidth;
1204 FX_WCHAR wch;
1205 if (pAccess) {
1206 wch = pAccess->GetChar(pIdentity, i);
1207 iWidth = pAccess->GetWidth(pIdentity, i);
1208 } else {
1209 wch = *pStr++;
1210 iWidth = *pWidths++;
1211 }
1212
1213 uint32_t dwProps = FX_GetUnicodeProperties(wch);
1214 FX_CHARTYPE chartype = GetCharTypeFromProp(dwProps);
1215 if (chartype == FX_CHARTYPE_ArabicAlef && iWidth == 0) {
1216 wPrev = 0xFEFF;
1217 wLast = wch;
1218 continue;
1219 }
1220
1221 if (chartype >= FX_CHARTYPE_ArabicAlef) {
1222 if (i < iLength) {
1223 if (pAccess) {
1224 iNext = i + 1;
1225 while (iNext <= iLength) {
1226 wNext = pAccess->GetChar(pIdentity, iNext);
1227 dwProps = FX_GetUnicodeProperties(wNext);
1228 if ((dwProps & FX_CHARTYPEBITSMASK) != FX_CHARTYPE_Combination)
1229 break;
1230
1231 iNext++;
1232 }
1233 if (iNext > iLength)
1234 wNext = 0xFEFF;
1235 } else {
1236 int32_t j = -1;
1237 do {
1238 j++;
1239 if (i + j >= iLength)
1240 break;
1241
1242 wNext = pStr[j];
1243 dwProps = FX_GetUnicodeProperties(wNext);
1244 } while ((dwProps & FX_CHARTYPEBITSMASK) == FX_CHARTYPE_Combination);
1245 if (i + j >= iLength)
1246 wNext = 0xFEFF;
1247 }
1248 } else {
1249 wNext = 0xFEFF;
1250 }
1251
1252 wForm = pdfium::arabic::GetFormChar(wch, wPrev, wNext);
1253 bLam = (wPrev == 0x0644 && wch == 0x0644 && wNext == 0x0647);
1254 } else if (chartype == FX_CHARTYPE_Combination) {
1255 wForm = wch;
1256 if (wch >= 0x064C && wch <= 0x0651) {
1257 if (bShadda) {
1258 wForm = 0xFEFF;
1259 bShadda = false;
1260 } else {
1261 wNext = 0xFEFF;
1262 if (pAccess) {
1263 iNext = i + 1;
1264 if (iNext <= iLength)
1265 wNext = pAccess->GetChar(pIdentity, iNext);
1266 } else {
1267 if (i < iLength)
1268 wNext = *pStr;
1269 }
1270 if (wch == 0x0651) {
1271 if (wNext >= 0x064C && wNext <= 0x0650) {
1272 wForm = FX_GetArabicFromShaddaTable(wNext);
1273 bShadda = true;
1274 }
1275 } else {
1276 if (wNext == 0x0651) {
1277 wForm = FX_GetArabicFromShaddaTable(wch);
1278 bShadda = true;
1279 }
1280 }
1281 }
1282 } else {
1283 bShadda = false;
1284 }
1285 } else if (chartype == FX_CHARTYPE_Numeric) {
1286 wForm = wch;
1287 if (bArabicNumber)
1288 wForm += 0x0630;
1289 } else if (wch == L'.') {
1290 wForm = wch;
1291 if (bArabicNumber) {
1292 wNext = 0xFEFF;
1293 if (pAccess) {
1294 iNext = i + 1;
1295 if (iNext <= iLength)
1296 wNext = pAccess->GetChar(pIdentity, iNext);
1297 } else {
1298 if (i < iLength)
1299 wNext = *pStr;
1300 }
1301 if (wNext >= L'0' && wNext <= L'9')
1302 wForm = 0x066B;
1303 }
1304 } else if (wch == L',') {
1305 wForm = wch;
1306 if (bArabicComma)
1307 wForm = 0x060C;
1308 } else if (bRTLPiece || bVerticalChar) {
1309 wForm = FX_GetMirrorChar(wch, dwProps, bRTLPiece, bVerticalChar);
1310 } else {
1311 wForm = wch;
1312 }
1313 if (chartype != FX_CHARTYPE_Combination)
1314 bShadda = false;
1315 if (chartype < FX_CHARTYPE_ArabicAlef)
1316 bLam = false;
1317
1318 dwProps = FX_GetUnicodeProperties(wForm);
1319 int32_t iCharRotation = iRotation;
1320 if (bVerticalChar && (dwProps & 0x8000) != 0)
1321 iCharRotation++;
1322
1323 iCharRotation %= 4;
1324 bool bEmptyChar =
1325 (chartype >= FX_CHARTYPE_Tab && chartype <= FX_CHARTYPE_Control);
1326 if (wForm == 0xFEFF)
1327 bEmptyChar = true;
1328
1329 int32_t iForms = bLam ? 3 : 1;
1330 iCount += (bEmptyChar && bSkipSpace) ? 0 : iForms;
1331 if (!pCharPos) {
1332 if (iWidth > 0)
1333 wPrev = wch;
1334 wLast = wch;
1335 continue;
1336 }
1337
1338 int32_t iCharWidth = iWidth;
1339 if (iCharWidth < 0)
1340 iCharWidth = -iCharWidth;
1341
1342 iCharWidth /= iFontSize;
1343 formChars[0].wch = wch;
1344 formChars[0].wForm = wForm;
1345 formChars[0].iWidth = iCharWidth;
1346 if (bLam) {
1347 formChars[1].wForm = 0x0651;
1348 iCharWidth = 0;
1349 pFont->GetCharWidth(0x0651, iCharWidth, false);
1350 formChars[1].iWidth = iCharWidth;
1351 formChars[2].wForm = 0x0670;
1352 iCharWidth = 0;
1353 pFont->GetCharWidth(0x0670, iCharWidth, false);
1354 formChars[2].iWidth = iCharWidth;
1355 }
1356
1357 for (int32_t j = 0; j < iForms; j++) {
1358 wForm = (FX_WCHAR)formChars[j].wForm;
1359 iCharWidth = formChars[j].iWidth;
1360 if (j > 0) {
1361 chartype = FX_CHARTYPE_Combination;
1362 wch = wForm;
1363 wLast = (FX_WCHAR)formChars[j - 1].wForm;
1364 }
1365 if (!bEmptyChar || (bEmptyChar && !bSkipSpace)) {
1366 pCharPos->m_GlyphIndex =
1367 bCharCode ? wch : pFont->GetGlyphIndex(wForm, false);
1368 #if _FXM_PLATFORM_ == _FXM_PLATFORM_APPLE_
1369 pCharPos->m_ExtGID = pCharPos->m_GlyphIndex;
1370 #endif
1371 pCharPos->m_FontCharWidth = iCharWidth;
1372 if (pWSForms)
1373 *pWSForms += wForm;
1374 }
1375
1376 int32_t iCharHeight;
1377 if (bVerticalDoc) {
1378 iCharHeight = iCharWidth;
1379 iCharWidth = 1000;
1380 } else {
1381 iCharHeight = 1000;
1382 }
1383
1384 fCharWidth = fFontSize * iCharWidth / 1000.0f;
1385 fCharHeight = fFontSize * iCharHeight / 1000.0f;
1386 if (bRTLPiece && chartype != FX_CHARTYPE_Combination) {
1387 if (bVerticalDoc)
1388 fY -= fCharHeight;
1389 else
1390 fX -= fCharWidth;
1391 }
1392 if (!bEmptyChar || (bEmptyChar && !bSkipSpace)) {
1393 pCharPos->m_Origin = CFX_PointF(fX, fY);
1394 if ((dwStyles & FX_TXTLAYOUTSTYLE_CombText) != 0) {
1395 int32_t iFormWidth = iCharWidth;
1396 pFont->GetCharWidth(wForm, iFormWidth, false);
1397 FX_FLOAT fOffset = fFontSize * (iCharWidth - iFormWidth) / 2000.0f;
1398 if (bVerticalDoc)
1399 pCharPos->m_Origin.y += fOffset;
1400 else
1401 pCharPos->m_Origin.x += fOffset;
1402 }
1403
1404 if (chartype == FX_CHARTYPE_Combination) {
1405 CFX_Rect rtBBox;
1406 if (pFont->GetCharBBox(wForm, &rtBBox, false)) {
1407 pCharPos->m_Origin.y =
1408 fYBase + fFontSize -
1409 fFontSize * (FX_FLOAT)rtBBox.height / (FX_FLOAT)iMaxHeight;
1410 }
1411 if (wForm == wch && wLast != 0xFEFF) {
1412 uint32_t dwLastProps = FX_GetUnicodeProperties(wLast);
1413 if ((dwLastProps & FX_CHARTYPEBITSMASK) ==
1414 FX_CHARTYPE_Combination) {
1415 CFX_Rect rtBox;
1416 if (pFont->GetCharBBox(wLast, &rtBox, false))
1417 pCharPos->m_Origin.y -= fFontSize * rtBox.height / iMaxHeight;
1418 }
1419 }
1420 }
1421 CFX_PointF ptOffset;
1422 if (bVerticalChar && (dwProps & 0x00010000) != 0) {
1423 CFX_Rect rtBBox;
1424 if (pFont->GetCharBBox(wForm, &rtBBox, false)) {
1425 ptOffset.x = fFontSize * (850 - rtBBox.right()) / iMaxHeight;
1426 ptOffset.y = fFontSize * (iAscent - rtBBox.top - 150) / iMaxHeight;
1427 }
1428 }
1429 pCharPos->m_Origin.x += ptOffset.x;
1430 pCharPos->m_Origin.y -= ptOffset.y;
1431 }
1432 if (!bRTLPiece && chartype != FX_CHARTYPE_Combination) {
1433 if (bVerticalDoc)
1434 fY += fCharHeight;
1435 else
1436 fX += fCharWidth;
1437 }
1438
1439 if (!bEmptyChar || (bEmptyChar && !bSkipSpace)) {
1440 pCharPos->m_bGlyphAdjust = true;
1441 if (bVerticalDoc) {
1442 if (iCharRotation == 0) {
1443 pCharPos->m_AdjustMatrix[0] = -1;
1444 pCharPos->m_AdjustMatrix[1] = 0;
1445 pCharPos->m_AdjustMatrix[2] = 0;
1446 pCharPos->m_AdjustMatrix[3] = 1;
1447 pCharPos->m_Origin.y += fAscent;
1448 } else if (iCharRotation == 1) {
1449 pCharPos->m_AdjustMatrix[0] = 0;
1450 pCharPos->m_AdjustMatrix[1] = -1;
1451 pCharPos->m_AdjustMatrix[2] = -1;
1452 pCharPos->m_AdjustMatrix[3] = 0;
1453 pCharPos->m_Origin.x -= fDescent;
1454 } else if (iCharRotation == 2) {
1455 pCharPos->m_AdjustMatrix[0] = 1;
1456 pCharPos->m_AdjustMatrix[1] = 0;
1457 pCharPos->m_AdjustMatrix[2] = 0;
1458 pCharPos->m_AdjustMatrix[3] = -1;
1459 pCharPos->m_Origin.x += fCharWidth;
1460 pCharPos->m_Origin.y += fAscent;
1461 } else {
1462 pCharPos->m_AdjustMatrix[0] = 0;
1463 pCharPos->m_AdjustMatrix[1] = 1;
1464 pCharPos->m_AdjustMatrix[2] = 1;
1465 pCharPos->m_AdjustMatrix[3] = 0;
1466 pCharPos->m_Origin.x += fAscent;
1467 }
1468 } else {
1469 if (iCharRotation == 0) {
1470 pCharPos->m_AdjustMatrix[0] = -1;
1471 pCharPos->m_AdjustMatrix[1] = 0;
1472 pCharPos->m_AdjustMatrix[2] = 0;
1473 pCharPos->m_AdjustMatrix[3] = 1;
1474 } else if (iCharRotation == 1) {
1475 pCharPos->m_AdjustMatrix[0] = 0;
1476 pCharPos->m_AdjustMatrix[1] = -1;
1477 pCharPos->m_AdjustMatrix[2] = -1;
1478 pCharPos->m_AdjustMatrix[3] = 0;
1479 pCharPos->m_Origin.x -= fDescent;
1480 pCharPos->m_Origin.y -= fAscent + fDescent;
1481 } else if (iCharRotation == 2) {
1482 pCharPos->m_AdjustMatrix[0] = 1;
1483 pCharPos->m_AdjustMatrix[1] = 0;
1484 pCharPos->m_AdjustMatrix[2] = 0;
1485 pCharPos->m_AdjustMatrix[3] = -1;
1486 pCharPos->m_Origin.x += fCharWidth;
1487 pCharPos->m_Origin.y -= fAscent;
1488 } else {
1489 pCharPos->m_AdjustMatrix[0] = 0;
1490 pCharPos->m_AdjustMatrix[1] = 1;
1491 pCharPos->m_AdjustMatrix[2] = 1;
1492 pCharPos->m_AdjustMatrix[3] = 0;
1493 pCharPos->m_Origin.x += fAscent;
1494 }
1495 }
1496 if (iHorScale != 100 || iVerScale != 100) {
1497 pCharPos->m_AdjustMatrix[0] =
1498 pCharPos->m_AdjustMatrix[0] * iHorScale / 100.0f;
1499 pCharPos->m_AdjustMatrix[1] =
1500 pCharPos->m_AdjustMatrix[1] * iHorScale / 100.0f;
1501 pCharPos->m_AdjustMatrix[2] =
1502 pCharPos->m_AdjustMatrix[2] * iVerScale / 100.0f;
1503 pCharPos->m_AdjustMatrix[3] =
1504 pCharPos->m_AdjustMatrix[3] * iVerScale / 100.0f;
1505 }
1506 pCharPos++;
1507 }
1508 }
1509 if (iWidth > 0)
1510 wPrev = static_cast<FX_WCHAR>(formChars[0].wch);
1511 wLast = wch;
1512 }
1513 return iCount;
1514 }
1515
GetCharRects(const FX_TXTRUN * pTxtRun,bool bCharBBox) const1516 std::vector<CFX_RectF> CFX_TxtBreak::GetCharRects(const FX_TXTRUN* pTxtRun,
1517 bool bCharBBox) const {
1518 if (!pTxtRun || pTxtRun->iLength < 1)
1519 return std::vector<CFX_RectF>();
1520
1521 IFX_TxtAccess* pAccess = pTxtRun->pAccess;
1522 const FDE_TEXTEDITPIECE* pIdentity = pTxtRun->pIdentity;
1523 const FX_WCHAR* pStr = pTxtRun->wsStr.c_str();
1524 int32_t* pWidths = pTxtRun->pWidths;
1525 int32_t iLength = pTxtRun->iLength;
1526 CFX_RectF rect(*pTxtRun->pRect);
1527 FX_FLOAT fFontSize = pTxtRun->fFontSize;
1528 int32_t iFontSize = FXSYS_round(fFontSize * 20.0f);
1529 FX_FLOAT fScale = fFontSize / 1000.0f;
1530 CFX_RetainPtr<CFGAS_GEFont> pFont = pTxtRun->pFont;
1531 if (!pFont)
1532 bCharBBox = false;
1533
1534 CFX_Rect bbox;
1535 if (bCharBBox)
1536 bCharBBox = pFont->GetBBox(&bbox);
1537
1538 FX_FLOAT fLeft = std::max(0.0f, bbox.left * fScale);
1539 FX_FLOAT fHeight = FXSYS_fabs(bbox.height * fScale);
1540 bool bRTLPiece = !!(pTxtRun->dwCharStyles & FX_TXTCHARSTYLE_OddBidiLevel);
1541 bool bVertical = !!(pTxtRun->dwStyles & FX_TXTLAYOUTSTYLE_VerticalLayout);
1542 bool bSingleLine = !!(pTxtRun->dwStyles & FX_TXTLAYOUTSTYLE_SingleLine);
1543 bool bCombText = !!(pTxtRun->dwStyles & FX_TXTLAYOUTSTYLE_CombText);
1544 FX_WCHAR wch;
1545 FX_WCHAR wLineBreakChar = pTxtRun->wLineBreakChar;
1546 int32_t iCharSize;
1547 FX_FLOAT fCharSize;
1548 FX_FLOAT fStart;
1549 if (bVertical)
1550 fStart = bRTLPiece ? rect.bottom() : rect.top;
1551 else
1552 fStart = bRTLPiece ? rect.right() : rect.left;
1553
1554 std::vector<CFX_RectF> rtArray(iLength);
1555 for (int32_t i = 0; i < iLength; i++) {
1556 if (pAccess) {
1557 wch = pAccess->GetChar(pIdentity, i);
1558 iCharSize = pAccess->GetWidth(pIdentity, i);
1559 } else {
1560 wch = *pStr++;
1561 iCharSize = *pWidths++;
1562 }
1563 fCharSize = static_cast<FX_FLOAT>(iCharSize) / 20000.0f;
1564 bool bRet = (!bSingleLine && FX_IsCtrlCode(wch));
1565 if (!(wch == L'\v' || wch == L'\f' || wch == 0x2028 || wch == 0x2029 ||
1566 (wLineBreakChar != 0xFEFF && wch == wLineBreakChar))) {
1567 bRet = false;
1568 }
1569 if (bRet) {
1570 iCharSize = iFontSize * 500;
1571 fCharSize = fFontSize / 2.0f;
1572 }
1573 if (bVertical) {
1574 rect.top = fStart;
1575 if (bRTLPiece) {
1576 rect.top -= fCharSize;
1577 fStart -= fCharSize;
1578 } else {
1579 fStart += fCharSize;
1580 }
1581 rect.height = fCharSize;
1582 } else {
1583 rect.left = fStart;
1584 if (bRTLPiece) {
1585 rect.left -= fCharSize;
1586 fStart -= fCharSize;
1587 } else {
1588 fStart += fCharSize;
1589 }
1590 rect.width = fCharSize;
1591 }
1592
1593 if (bCharBBox && !bRet) {
1594 int32_t iCharWidth = 1000;
1595 pFont->GetCharWidth(wch, iCharWidth, false);
1596 FX_FLOAT fRTLeft = 0, fCharWidth = 0;
1597 if (iCharWidth > 0) {
1598 fCharWidth = iCharWidth * fScale;
1599 fRTLeft = fLeft;
1600 if (bCombText)
1601 fRTLeft = (rect.width - fCharWidth) / 2.0f;
1602 }
1603 CFX_RectF rtBBoxF;
1604 if (bVertical) {
1605 rtBBoxF.top = rect.left + fRTLeft;
1606 rtBBoxF.left = rect.top + (rect.height - fHeight) / 2.0f;
1607 rtBBoxF.height = fCharWidth;
1608 rtBBoxF.width = fHeight;
1609 rtBBoxF.left = std::max(rtBBoxF.left, 0.0f);
1610 } else {
1611 rtBBoxF.left = rect.left + fRTLeft;
1612 rtBBoxF.top = rect.top + (rect.height - fHeight) / 2.0f;
1613 rtBBoxF.width = fCharWidth;
1614 rtBBoxF.height = fHeight;
1615 rtBBoxF.top = std::max(rtBBoxF.top, 0.0f);
1616 }
1617 rtArray[i] = rtBBoxF;
1618 continue;
1619 }
1620 rtArray[i] = rect;
1621 }
1622 return rtArray;
1623 }
1624
FX_TXTRUN()1625 FX_TXTRUN::FX_TXTRUN()
1626 : pAccess(nullptr),
1627 pIdentity(nullptr),
1628 pWidths(nullptr),
1629 iLength(0),
1630 pFont(nullptr),
1631 fFontSize(12),
1632 dwStyles(0),
1633 iHorizontalScale(100),
1634 iVerticalScale(100),
1635 iCharRotation(0),
1636 dwCharStyles(0),
1637 pRect(nullptr),
1638 wLineBreakChar(L'\n'),
1639 bSkipSpace(true) {}
1640
~FX_TXTRUN()1641 FX_TXTRUN::~FX_TXTRUN() {}
1642
1643 FX_TXTRUN::FX_TXTRUN(const FX_TXTRUN& other) = default;
1644
CFX_TxtPiece()1645 CFX_TxtPiece::CFX_TxtPiece()
1646 : m_dwStatus(FX_TXTBREAK_PieceBreak),
1647 m_iStartPos(0),
1648 m_iWidth(-1),
1649 m_iStartChar(0),
1650 m_iChars(0),
1651 m_iBidiLevel(0),
1652 m_iBidiPos(0),
1653 m_iHorizontalScale(100),
1654 m_iVerticalScale(100),
1655 m_dwCharStyles(0),
1656 m_pChars(nullptr),
1657 m_pUserData(nullptr) {}
1658
CFX_TxtLine(int32_t iBlockSize)1659 CFX_TxtLine::CFX_TxtLine(int32_t iBlockSize)
1660 : m_pLineChars(new std::vector<CFX_TxtChar>),
1661 m_pLinePieces(new CFX_TxtPieceArray(16)),
1662 m_iStart(0),
1663 m_iWidth(0),
1664 m_iArabicChars(0) {}
1665
~CFX_TxtLine()1666 CFX_TxtLine::~CFX_TxtLine() {
1667 RemoveAll();
1668 }
1669