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| 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 "core/fpdfapi/fpdf_page/pageint.h" | |
| 8 | |
| 9 #include <algorithm> | |
| 10 | |
| 11 #include "core/fpdfapi/fpdf_page/include/cpdf_form.h" | |
| 12 #include "core/fpdfapi/fpdf_page/include/cpdf_page.h" | |
| 13 #include "core/fpdfapi/fpdf_parser/include/cpdf_array.h" | |
| 14 #include "core/fpdfapi/fpdf_parser/include/cpdf_dictionary.h" | |
| 15 #include "core/fpdfapi/fpdf_parser/include/cpdf_document.h" | |
| 16 #include "core/fpdfapi/include/cpdf_modulemgr.h" | |
| 17 #include "core/fpdfapi/ipdf_rendermodule.h" | |
| 18 #include "third_party/base/stl_util.h" | |
| 19 | |
| 20 CPDF_PageObject::CPDF_PageObject() {} | |
| 21 | |
| 22 CPDF_PageObject::~CPDF_PageObject() {} | |
| 23 | |
| 24 void CPDF_PageObject::CopyData(const CPDF_PageObject* pSrc) { | |
| 25 CopyStates(*pSrc); | |
| 26 m_Left = pSrc->m_Left; | |
| 27 m_Right = pSrc->m_Right; | |
| 28 m_Top = pSrc->m_Top; | |
| 29 m_Bottom = pSrc->m_Bottom; | |
| 30 } | |
| 31 | |
| 32 void CPDF_PageObject::TransformClipPath(CFX_Matrix& matrix) { | |
| 33 if (m_ClipPath.IsNull()) { | |
| 34 return; | |
| 35 } | |
| 36 m_ClipPath.GetModify(); | |
| 37 m_ClipPath.Transform(matrix); | |
| 38 } | |
| 39 | |
| 40 void CPDF_PageObject::TransformGeneralState(CFX_Matrix& matrix) { | |
| 41 if (m_GeneralState.IsNull()) { | |
| 42 return; | |
| 43 } | |
| 44 CPDF_GeneralStateData* pGS = m_GeneralState.GetModify(); | |
| 45 pGS->m_Matrix.Concat(matrix); | |
| 46 } | |
| 47 | |
| 48 FX_RECT CPDF_PageObject::GetBBox(const CFX_Matrix* pMatrix) const { | |
| 49 CFX_FloatRect rect(m_Left, m_Bottom, m_Right, m_Top); | |
| 50 if (pMatrix) { | |
| 51 pMatrix->TransformRect(rect); | |
| 52 } | |
| 53 return rect.GetOutterRect(); | |
| 54 } | |
| 55 | |
| 56 CPDF_TextObject::CPDF_TextObject() | |
| 57 : m_PosX(0), | |
| 58 m_PosY(0), | |
| 59 m_nChars(0), | |
| 60 m_pCharCodes(nullptr), | |
| 61 m_pCharPos(nullptr) {} | |
| 62 | |
| 63 CPDF_TextObject::~CPDF_TextObject() { | |
| 64 if (m_nChars > 1) { | |
| 65 FX_Free(m_pCharCodes); | |
| 66 } | |
| 67 FX_Free(m_pCharPos); | |
| 68 } | |
| 69 | |
| 70 void CPDF_TextObject::GetItemInfo(int index, CPDF_TextObjectItem* pInfo) const { | |
| 71 pInfo->m_CharCode = | |
| 72 m_nChars == 1 ? (FX_DWORD)(uintptr_t)m_pCharCodes : m_pCharCodes[index]; | |
| 73 pInfo->m_OriginX = index ? m_pCharPos[index - 1] : 0; | |
| 74 pInfo->m_OriginY = 0; | |
| 75 if (pInfo->m_CharCode == -1) { | |
| 76 return; | |
| 77 } | |
| 78 CPDF_Font* pFont = m_TextState.GetFont(); | |
| 79 if (!pFont->IsCIDFont()) { | |
| 80 return; | |
| 81 } | |
| 82 if (!pFont->AsCIDFont()->IsVertWriting()) { | |
| 83 return; | |
| 84 } | |
| 85 FX_WORD CID = pFont->AsCIDFont()->CIDFromCharCode(pInfo->m_CharCode); | |
| 86 pInfo->m_OriginY = pInfo->m_OriginX; | |
| 87 pInfo->m_OriginX = 0; | |
| 88 short vx, vy; | |
| 89 pFont->AsCIDFont()->GetVertOrigin(CID, vx, vy); | |
| 90 FX_FLOAT fontsize = m_TextState.GetFontSize(); | |
| 91 pInfo->m_OriginX -= fontsize * vx / 1000; | |
| 92 pInfo->m_OriginY -= fontsize * vy / 1000; | |
| 93 } | |
| 94 | |
| 95 int CPDF_TextObject::CountChars() const { | |
| 96 if (m_nChars == 1) { | |
| 97 return 1; | |
| 98 } | |
| 99 int count = 0; | |
| 100 for (int i = 0; i < m_nChars; ++i) | |
| 101 if (m_pCharCodes[i] != (FX_DWORD)-1) { | |
| 102 ++count; | |
| 103 } | |
| 104 return count; | |
| 105 } | |
| 106 | |
| 107 void CPDF_TextObject::GetCharInfo(int index, | |
| 108 FX_DWORD& charcode, | |
| 109 FX_FLOAT& kerning) const { | |
| 110 if (m_nChars == 1) { | |
| 111 charcode = (FX_DWORD)(uintptr_t)m_pCharCodes; | |
| 112 kerning = 0; | |
| 113 return; | |
| 114 } | |
| 115 int count = 0; | |
| 116 for (int i = 0; i < m_nChars; ++i) { | |
| 117 if (m_pCharCodes[i] != (FX_DWORD)-1) { | |
| 118 if (count == index) { | |
| 119 charcode = m_pCharCodes[i]; | |
| 120 if (i == m_nChars - 1 || m_pCharCodes[i + 1] != (FX_DWORD)-1) { | |
| 121 kerning = 0; | |
| 122 } else { | |
| 123 kerning = m_pCharPos[i]; | |
| 124 } | |
| 125 return; | |
| 126 } | |
| 127 ++count; | |
| 128 } | |
| 129 } | |
| 130 } | |
| 131 | |
| 132 void CPDF_TextObject::GetCharInfo(int index, CPDF_TextObjectItem* pInfo) const { | |
| 133 if (m_nChars == 1) { | |
| 134 GetItemInfo(0, pInfo); | |
| 135 return; | |
| 136 } | |
| 137 int count = 0; | |
| 138 for (int i = 0; i < m_nChars; ++i) { | |
| 139 FX_DWORD charcode = m_pCharCodes[i]; | |
| 140 if (charcode == (FX_DWORD)-1) { | |
| 141 continue; | |
| 142 } | |
| 143 if (count == index) { | |
| 144 GetItemInfo(i, pInfo); | |
| 145 break; | |
| 146 } | |
| 147 ++count; | |
| 148 } | |
| 149 } | |
| 150 | |
| 151 CPDF_TextObject* CPDF_TextObject::Clone() const { | |
| 152 CPDF_TextObject* obj = new CPDF_TextObject; | |
| 153 obj->CopyData(this); | |
| 154 | |
| 155 obj->m_nChars = m_nChars; | |
| 156 if (m_nChars > 1) { | |
| 157 obj->m_pCharCodes = FX_Alloc(FX_DWORD, m_nChars); | |
| 158 FXSYS_memcpy(obj->m_pCharCodes, m_pCharCodes, m_nChars * sizeof(FX_DWORD)); | |
| 159 obj->m_pCharPos = FX_Alloc(FX_FLOAT, m_nChars - 1); | |
| 160 FXSYS_memcpy(obj->m_pCharPos, m_pCharPos, | |
| 161 (m_nChars - 1) * sizeof(FX_FLOAT)); | |
| 162 } else { | |
| 163 obj->m_pCharCodes = m_pCharCodes; | |
| 164 } | |
| 165 obj->m_PosX = m_PosX; | |
| 166 obj->m_PosY = m_PosY; | |
| 167 return obj; | |
| 168 } | |
| 169 | |
| 170 void CPDF_TextObject::GetTextMatrix(CFX_Matrix* pMatrix) const { | |
| 171 FX_FLOAT* pTextMatrix = m_TextState.GetMatrix(); | |
| 172 pMatrix->Set(pTextMatrix[0], pTextMatrix[2], pTextMatrix[1], pTextMatrix[3], | |
| 173 m_PosX, m_PosY); | |
| 174 } | |
| 175 | |
| 176 void CPDF_TextObject::SetSegments(const CFX_ByteString* pStrs, | |
| 177 FX_FLOAT* pKerning, | |
| 178 int nsegs) { | |
| 179 if (m_nChars > 1) { | |
| 180 FX_Free(m_pCharCodes); | |
| 181 m_pCharCodes = nullptr; | |
| 182 } | |
| 183 FX_Free(m_pCharPos); | |
| 184 m_pCharPos = nullptr; | |
| 185 CPDF_Font* pFont = m_TextState.GetFont(); | |
| 186 m_nChars = 0; | |
| 187 for (int i = 0; i < nsegs; ++i) { | |
| 188 m_nChars += pFont->CountChar(pStrs[i], pStrs[i].GetLength()); | |
| 189 } | |
| 190 m_nChars += nsegs - 1; | |
| 191 if (m_nChars > 1) { | |
| 192 m_pCharCodes = FX_Alloc(FX_DWORD, m_nChars); | |
| 193 m_pCharPos = FX_Alloc(FX_FLOAT, m_nChars - 1); | |
| 194 int index = 0; | |
| 195 for (int i = 0; i < nsegs; ++i) { | |
| 196 const FX_CHAR* segment = pStrs[i]; | |
| 197 int offset = 0, len = pStrs[i].GetLength(); | |
| 198 while (offset < len) { | |
| 199 m_pCharCodes[index++] = pFont->GetNextChar(segment, len, offset); | |
| 200 } | |
| 201 if (i != nsegs - 1) { | |
| 202 m_pCharPos[index - 1] = pKerning[i]; | |
| 203 m_pCharCodes[index++] = (FX_DWORD)-1; | |
| 204 } | |
| 205 } | |
| 206 } else { | |
| 207 int offset = 0; | |
| 208 m_pCharCodes = (FX_DWORD*)(uintptr_t)pFont->GetNextChar( | |
| 209 pStrs[0], pStrs[0].GetLength(), offset); | |
| 210 } | |
| 211 } | |
| 212 | |
| 213 void CPDF_TextObject::SetText(const CFX_ByteString& str) { | |
| 214 SetSegments(&str, nullptr, 1); | |
| 215 RecalcPositionData(); | |
| 216 } | |
| 217 | |
| 218 FX_FLOAT CPDF_TextObject::GetCharWidth(FX_DWORD charcode) const { | |
| 219 FX_FLOAT fontsize = m_TextState.GetFontSize() / 1000; | |
| 220 CPDF_Font* pFont = m_TextState.GetFont(); | |
| 221 FX_BOOL bVertWriting = FALSE; | |
| 222 CPDF_CIDFont* pCIDFont = pFont->AsCIDFont(); | |
| 223 if (pCIDFont) { | |
| 224 bVertWriting = pCIDFont->IsVertWriting(); | |
| 225 } | |
| 226 if (!bVertWriting) | |
| 227 return pFont->GetCharWidthF(charcode, 0) * fontsize; | |
| 228 | |
| 229 FX_WORD CID = pCIDFont->CIDFromCharCode(charcode); | |
| 230 return pCIDFont->GetVertWidth(CID) * fontsize; | |
| 231 } | |
| 232 | |
| 233 void CPDF_TextObject::CalcPositionData(FX_FLOAT* pTextAdvanceX, | |
| 234 FX_FLOAT* pTextAdvanceY, | |
| 235 FX_FLOAT horz_scale, | |
| 236 int level) { | |
| 237 FX_FLOAT curpos = 0; | |
| 238 FX_FLOAT min_x = 10000 * 1.0f; | |
| 239 FX_FLOAT max_x = -10000 * 1.0f; | |
| 240 FX_FLOAT min_y = 10000 * 1.0f; | |
| 241 FX_FLOAT max_y = -10000 * 1.0f; | |
| 242 CPDF_Font* pFont = m_TextState.GetFont(); | |
| 243 FX_BOOL bVertWriting = FALSE; | |
| 244 CPDF_CIDFont* pCIDFont = pFont->AsCIDFont(); | |
| 245 if (pCIDFont) { | |
| 246 bVertWriting = pCIDFont->IsVertWriting(); | |
| 247 } | |
| 248 FX_FLOAT fontsize = m_TextState.GetFontSize(); | |
| 249 for (int i = 0; i < m_nChars; ++i) { | |
| 250 FX_DWORD charcode = | |
| 251 m_nChars == 1 ? (FX_DWORD)(uintptr_t)m_pCharCodes : m_pCharCodes[i]; | |
| 252 if (i > 0) { | |
| 253 if (charcode == (FX_DWORD)-1) { | |
| 254 curpos -= (m_pCharPos[i - 1] * fontsize) / 1000; | |
| 255 continue; | |
| 256 } | |
| 257 m_pCharPos[i - 1] = curpos; | |
| 258 } | |
| 259 FX_RECT char_rect = pFont->GetCharBBox(charcode, level); | |
| 260 FX_FLOAT charwidth; | |
| 261 if (!bVertWriting) { | |
| 262 if (min_y > char_rect.top) { | |
| 263 min_y = (FX_FLOAT)char_rect.top; | |
| 264 } | |
| 265 if (max_y < char_rect.top) { | |
| 266 max_y = (FX_FLOAT)char_rect.top; | |
| 267 } | |
| 268 if (min_y > char_rect.bottom) { | |
| 269 min_y = (FX_FLOAT)char_rect.bottom; | |
| 270 } | |
| 271 if (max_y < char_rect.bottom) { | |
| 272 max_y = (FX_FLOAT)char_rect.bottom; | |
| 273 } | |
| 274 FX_FLOAT char_left = curpos + char_rect.left * fontsize / 1000; | |
| 275 FX_FLOAT char_right = curpos + char_rect.right * fontsize / 1000; | |
| 276 if (min_x > char_left) { | |
| 277 min_x = char_left; | |
| 278 } | |
| 279 if (max_x < char_left) { | |
| 280 max_x = char_left; | |
| 281 } | |
| 282 if (min_x > char_right) { | |
| 283 min_x = char_right; | |
| 284 } | |
| 285 if (max_x < char_right) { | |
| 286 max_x = char_right; | |
| 287 } | |
| 288 charwidth = pFont->GetCharWidthF(charcode, level) * fontsize / 1000; | |
| 289 } else { | |
| 290 FX_WORD CID = pCIDFont->CIDFromCharCode(charcode); | |
| 291 short vx; | |
| 292 short vy; | |
| 293 pCIDFont->GetVertOrigin(CID, vx, vy); | |
| 294 char_rect.left -= vx; | |
| 295 char_rect.right -= vx; | |
| 296 char_rect.top -= vy; | |
| 297 char_rect.bottom -= vy; | |
| 298 if (min_x > char_rect.left) { | |
| 299 min_x = (FX_FLOAT)char_rect.left; | |
| 300 } | |
| 301 if (max_x < char_rect.left) { | |
| 302 max_x = (FX_FLOAT)char_rect.left; | |
| 303 } | |
| 304 if (min_x > char_rect.right) { | |
| 305 min_x = (FX_FLOAT)char_rect.right; | |
| 306 } | |
| 307 if (max_x < char_rect.right) { | |
| 308 max_x = (FX_FLOAT)char_rect.right; | |
| 309 } | |
| 310 FX_FLOAT char_top = curpos + char_rect.top * fontsize / 1000; | |
| 311 FX_FLOAT char_bottom = curpos + char_rect.bottom * fontsize / 1000; | |
| 312 if (min_y > char_top) { | |
| 313 min_y = char_top; | |
| 314 } | |
| 315 if (max_y < char_top) { | |
| 316 max_y = char_top; | |
| 317 } | |
| 318 if (min_y > char_bottom) { | |
| 319 min_y = char_bottom; | |
| 320 } | |
| 321 if (max_y < char_bottom) { | |
| 322 max_y = char_bottom; | |
| 323 } | |
| 324 charwidth = pCIDFont->GetVertWidth(CID) * fontsize / 1000; | |
| 325 } | |
| 326 curpos += charwidth; | |
| 327 if (charcode == ' ' && (!pCIDFont || pCIDFont->GetCharSize(32) == 1)) { | |
| 328 curpos += m_TextState.GetObject()->m_WordSpace; | |
| 329 } | |
| 330 curpos += m_TextState.GetObject()->m_CharSpace; | |
| 331 } | |
| 332 if (bVertWriting) { | |
| 333 if (pTextAdvanceX) { | |
| 334 *pTextAdvanceX = 0; | |
| 335 } | |
| 336 if (pTextAdvanceY) { | |
| 337 *pTextAdvanceY = curpos; | |
| 338 } | |
| 339 min_x = min_x * fontsize / 1000; | |
| 340 max_x = max_x * fontsize / 1000; | |
| 341 } else { | |
| 342 if (pTextAdvanceX) { | |
| 343 *pTextAdvanceX = curpos * horz_scale; | |
| 344 } | |
| 345 if (pTextAdvanceY) { | |
| 346 *pTextAdvanceY = 0; | |
| 347 } | |
| 348 min_y = min_y * fontsize / 1000; | |
| 349 max_y = max_y * fontsize / 1000; | |
| 350 } | |
| 351 CFX_Matrix matrix; | |
| 352 GetTextMatrix(&matrix); | |
| 353 m_Left = min_x; | |
| 354 m_Right = max_x; | |
| 355 m_Bottom = min_y; | |
| 356 m_Top = max_y; | |
| 357 matrix.TransformRect(m_Left, m_Right, m_Top, m_Bottom); | |
| 358 int textmode = m_TextState.GetObject()->m_TextMode; | |
| 359 if (textmode == 1 || textmode == 2 || textmode == 5 || textmode == 6) { | |
| 360 FX_FLOAT half_width = m_GraphState.GetObject()->m_LineWidth / 2; | |
| 361 m_Left -= half_width; | |
| 362 m_Right += half_width; | |
| 363 m_Top += half_width; | |
| 364 m_Bottom -= half_width; | |
| 365 } | |
| 366 } | |
| 367 | |
| 368 void CPDF_TextObject::Transform(const CFX_Matrix& matrix) { | |
| 369 m_TextState.GetModify(); | |
| 370 CFX_Matrix text_matrix; | |
| 371 GetTextMatrix(&text_matrix); | |
| 372 text_matrix.Concat(matrix); | |
| 373 FX_FLOAT* pTextMatrix = m_TextState.GetMatrix(); | |
| 374 pTextMatrix[0] = text_matrix.GetA(); | |
| 375 pTextMatrix[1] = text_matrix.GetC(); | |
| 376 pTextMatrix[2] = text_matrix.GetB(); | |
| 377 pTextMatrix[3] = text_matrix.GetD(); | |
| 378 m_PosX = text_matrix.GetE(); | |
| 379 m_PosY = text_matrix.GetF(); | |
| 380 CalcPositionData(nullptr, nullptr, 0); | |
| 381 } | |
| 382 | |
| 383 void CPDF_TextObject::SetPosition(FX_FLOAT x, FX_FLOAT y) { | |
| 384 FX_FLOAT dx = x - m_PosX; | |
| 385 FX_FLOAT dy = y - m_PosY; | |
| 386 m_PosX = x; | |
| 387 m_PosY = y; | |
| 388 m_Left += dx; | |
| 389 m_Right += dx; | |
| 390 m_Top += dy; | |
| 391 m_Bottom += dy; | |
| 392 } | |
| 393 | |
| 394 CPDF_ShadingObject::CPDF_ShadingObject() : m_pShading(nullptr) {} | |
| 395 | |
| 396 CPDF_ShadingObject::~CPDF_ShadingObject() {} | |
| 397 | |
| 398 CPDF_ShadingObject* CPDF_ShadingObject::Clone() const { | |
| 399 CPDF_ShadingObject* obj = new CPDF_ShadingObject; | |
| 400 obj->CopyData(this); | |
| 401 | |
| 402 obj->m_pShading = m_pShading; | |
| 403 if (obj->m_pShading && obj->m_pShading->m_pDocument) { | |
| 404 CPDF_DocPageData* pDocPageData = | |
| 405 obj->m_pShading->m_pDocument->GetPageData(); | |
| 406 obj->m_pShading = (CPDF_ShadingPattern*)pDocPageData->GetPattern( | |
| 407 obj->m_pShading->m_pShadingObj, m_pShading->m_bShadingObj, | |
| 408 &obj->m_pShading->m_ParentMatrix); | |
| 409 } | |
| 410 obj->m_Matrix = m_Matrix; | |
| 411 return obj; | |
| 412 } | |
| 413 | |
| 414 void CPDF_ShadingObject::Transform(const CFX_Matrix& matrix) { | |
| 415 if (!m_ClipPath.IsNull()) { | |
| 416 m_ClipPath.GetModify(); | |
| 417 m_ClipPath.Transform(matrix); | |
| 418 } | |
| 419 m_Matrix.Concat(matrix); | |
| 420 if (!m_ClipPath.IsNull()) { | |
| 421 CalcBoundingBox(); | |
| 422 } else { | |
| 423 matrix.TransformRect(m_Left, m_Right, m_Top, m_Bottom); | |
| 424 } | |
| 425 } | |
| 426 | |
| 427 void CPDF_ShadingObject::CalcBoundingBox() { | |
| 428 if (m_ClipPath.IsNull()) { | |
| 429 return; | |
| 430 } | |
| 431 CFX_FloatRect rect = m_ClipPath.GetClipBox(); | |
| 432 m_Left = rect.left; | |
| 433 m_Bottom = rect.bottom; | |
| 434 m_Right = rect.right; | |
| 435 m_Top = rect.top; | |
| 436 } | |
| 437 | |
| 438 CPDF_FormObject::CPDF_FormObject() : m_pForm(nullptr) {} | |
| 439 | |
| 440 CPDF_FormObject::~CPDF_FormObject() { | |
| 441 delete m_pForm; | |
| 442 } | |
| 443 | |
| 444 void CPDF_FormObject::Transform(const CFX_Matrix& matrix) { | |
| 445 m_FormMatrix.Concat(matrix); | |
| 446 CalcBoundingBox(); | |
| 447 } | |
| 448 | |
| 449 CPDF_FormObject* CPDF_FormObject::Clone() const { | |
| 450 CPDF_FormObject* obj = new CPDF_FormObject; | |
| 451 obj->CopyData(this); | |
| 452 | |
| 453 obj->m_pForm = m_pForm->Clone(); | |
| 454 obj->m_FormMatrix = m_FormMatrix; | |
| 455 return obj; | |
| 456 } | |
| 457 | |
| 458 void CPDF_FormObject::CalcBoundingBox() { | |
| 459 CFX_FloatRect form_rect = m_pForm->CalcBoundingBox(); | |
| 460 form_rect.Transform(&m_FormMatrix); | |
| 461 m_Left = form_rect.left; | |
| 462 m_Bottom = form_rect.bottom; | |
| 463 m_Right = form_rect.right; | |
| 464 m_Top = form_rect.top; | |
| 465 } | |
| 466 | |
| 467 CPDF_Page::CPDF_Page() : m_pPageRender(nullptr) {} | |
| 468 | |
| 469 void CPDF_Page::Load(CPDF_Document* pDocument, | |
| 470 CPDF_Dictionary* pPageDict, | |
| 471 FX_BOOL bPageCache) { | |
| 472 m_pDocument = (CPDF_Document*)pDocument; | |
| 473 m_pFormDict = pPageDict; | |
| 474 if (bPageCache) { | |
| 475 m_pPageRender = | |
| 476 CPDF_ModuleMgr::Get()->GetRenderModule()->CreatePageCache(this); | |
| 477 } | |
| 478 if (!pPageDict) { | |
| 479 m_PageWidth = m_PageHeight = 100 * 1.0f; | |
| 480 m_pPageResources = m_pResources = NULL; | |
| 481 return; | |
| 482 } | |
| 483 CPDF_Object* pageAttr = GetPageAttr("Resources"); | |
| 484 m_pResources = pageAttr ? pageAttr->GetDict() : NULL; | |
| 485 m_pPageResources = m_pResources; | |
| 486 CPDF_Object* pRotate = GetPageAttr("Rotate"); | |
| 487 int rotate = 0; | |
| 488 if (pRotate) { | |
| 489 rotate = pRotate->GetInteger() / 90 % 4; | |
| 490 } | |
| 491 if (rotate < 0) { | |
| 492 rotate += 4; | |
| 493 } | |
| 494 CPDF_Array* pMediaBox = ToArray(GetPageAttr("MediaBox")); | |
| 495 CFX_FloatRect mediabox; | |
| 496 if (pMediaBox) { | |
| 497 mediabox = pMediaBox->GetRect(); | |
| 498 mediabox.Normalize(); | |
| 499 } | |
| 500 if (mediabox.IsEmpty()) { | |
| 501 mediabox = CFX_FloatRect(0, 0, 612, 792); | |
| 502 } | |
| 503 | |
| 504 CPDF_Array* pCropBox = ToArray(GetPageAttr("CropBox")); | |
| 505 if (pCropBox) { | |
| 506 m_BBox = pCropBox->GetRect(); | |
| 507 m_BBox.Normalize(); | |
| 508 } | |
| 509 if (m_BBox.IsEmpty()) { | |
| 510 m_BBox = mediabox; | |
| 511 } else { | |
| 512 m_BBox.Intersect(mediabox); | |
| 513 } | |
| 514 if (rotate % 2) { | |
| 515 m_PageHeight = m_BBox.right - m_BBox.left; | |
| 516 m_PageWidth = m_BBox.top - m_BBox.bottom; | |
| 517 } else { | |
| 518 m_PageWidth = m_BBox.right - m_BBox.left; | |
| 519 m_PageHeight = m_BBox.top - m_BBox.bottom; | |
| 520 } | |
| 521 switch (rotate) { | |
| 522 case 0: | |
| 523 m_PageMatrix.Set(1.0f, 0, 0, 1.0f, -m_BBox.left, -m_BBox.bottom); | |
| 524 break; | |
| 525 case 1: | |
| 526 m_PageMatrix.Set(0, -1.0f, 1.0f, 0, -m_BBox.bottom, m_BBox.right); | |
| 527 break; | |
| 528 case 2: | |
| 529 m_PageMatrix.Set(-1.0f, 0, 0, -1.0f, m_BBox.right, m_BBox.top); | |
| 530 break; | |
| 531 case 3: | |
| 532 m_PageMatrix.Set(0, 1.0f, -1.0f, 0, m_BBox.top, -m_BBox.left); | |
| 533 break; | |
| 534 } | |
| 535 m_Transparency = PDFTRANS_ISOLATED; | |
| 536 LoadTransInfo(); | |
| 537 } | |
| 538 | |
| 539 void CPDF_Page::StartParse(CPDF_ParseOptions* pOptions) { | |
| 540 if (m_ParseState == CONTENT_PARSED || m_ParseState == CONTENT_PARSING) { | |
| 541 return; | |
| 542 } | |
| 543 m_pParser.reset(new CPDF_ContentParser); | |
| 544 m_pParser->Start(this, pOptions); | |
| 545 m_ParseState = CONTENT_PARSING; | |
| 546 } | |
| 547 | |
| 548 void CPDF_Page::ParseContent(CPDF_ParseOptions* pOptions) { | |
| 549 StartParse(pOptions); | |
| 550 ContinueParse(nullptr); | |
| 551 } | |
| 552 | |
| 553 CPDF_Page::~CPDF_Page() { | |
| 554 if (m_pPageRender) { | |
| 555 IPDF_RenderModule* pModule = CPDF_ModuleMgr::Get()->GetRenderModule(); | |
| 556 pModule->DestroyPageCache(m_pPageRender); | |
| 557 } | |
| 558 } | |
| 559 | |
| 560 CPDF_Object* FPDFAPI_GetPageAttr(CPDF_Dictionary* pPageDict, | |
| 561 const CFX_ByteStringC& name) { | |
| 562 int level = 0; | |
| 563 while (1) { | |
| 564 CPDF_Object* pObj = pPageDict->GetElementValue(name); | |
| 565 if (pObj) { | |
| 566 return pObj; | |
| 567 } | |
| 568 CPDF_Dictionary* pParent = pPageDict->GetDictBy("Parent"); | |
| 569 if (!pParent || pParent == pPageDict) { | |
| 570 return NULL; | |
| 571 } | |
| 572 pPageDict = pParent; | |
| 573 level++; | |
| 574 if (level == 1000) { | |
| 575 return NULL; | |
| 576 } | |
| 577 } | |
| 578 } | |
| 579 | |
| 580 CPDF_Object* CPDF_Page::GetPageAttr(const CFX_ByteStringC& name) const { | |
| 581 return FPDFAPI_GetPageAttr(m_pFormDict, name); | |
| 582 } | |
| 583 | |
| 584 void CPDF_Page::GetDisplayMatrix(CFX_Matrix& matrix, | |
| 585 int xPos, | |
| 586 int yPos, | |
| 587 int xSize, | |
| 588 int ySize, | |
| 589 int iRotate) const { | |
| 590 if (m_PageWidth == 0 || m_PageHeight == 0) { | |
| 591 return; | |
| 592 } | |
| 593 CFX_Matrix display_matrix; | |
| 594 int x0, y0, x1, y1, x2, y2; | |
| 595 iRotate %= 4; | |
| 596 switch (iRotate) { | |
| 597 case 0: | |
| 598 x0 = xPos; | |
| 599 y0 = yPos + ySize; | |
| 600 x1 = xPos; | |
| 601 y1 = yPos; | |
| 602 x2 = xPos + xSize; | |
| 603 y2 = yPos + ySize; | |
| 604 break; | |
| 605 case 1: | |
| 606 x0 = xPos; | |
| 607 y0 = yPos; | |
| 608 x1 = xPos + xSize; | |
| 609 y1 = yPos; | |
| 610 x2 = xPos; | |
| 611 y2 = yPos + ySize; | |
| 612 break; | |
| 613 case 2: | |
| 614 x0 = xPos + xSize; | |
| 615 y0 = yPos; | |
| 616 x1 = xPos + xSize; | |
| 617 y1 = yPos + ySize; | |
| 618 x2 = xPos; | |
| 619 y2 = yPos; | |
| 620 break; | |
| 621 case 3: | |
| 622 x0 = xPos + xSize; | |
| 623 y0 = yPos + ySize; | |
| 624 x1 = xPos; | |
| 625 y1 = yPos + ySize; | |
| 626 x2 = xPos + xSize; | |
| 627 y2 = yPos; | |
| 628 break; | |
| 629 } | |
| 630 display_matrix.Set( | |
| 631 ((FX_FLOAT)(x2 - x0)) / m_PageWidth, ((FX_FLOAT)(y2 - y0)) / m_PageWidth, | |
| 632 ((FX_FLOAT)(x1 - x0)) / m_PageHeight, | |
| 633 ((FX_FLOAT)(y1 - y0)) / m_PageHeight, (FX_FLOAT)x0, (FX_FLOAT)y0); | |
| 634 matrix = m_PageMatrix; | |
| 635 matrix.Concat(display_matrix); | |
| 636 } | |
| OLD | NEW |
|---|
Chromium Code Reviews
Issue 1811053002:
Move core/include/fpdfapi/fpdf_pageobj.h into core/fpdfapi. (Closed)
Base URL: https://pdfium.googlesource.com/pdfium.git@master