| OLD | NEW |
|---|
| (Empty) |
| 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_render/render_int.h" | |
| 8 | |
| 9 #include <algorithm> | |
| 10 | |
| 11 #include "core/fpdfapi/fpdf_render/cpdf_rendercontext.h" | |
| 12 #include "core/fpdfapi/fpdf_render/cpdf_renderoptions.h" | |
| 13 #include "core/fpdfapi/page/cpdf_form.h" | |
| 14 #include "core/fpdfapi/page/cpdf_graphicstates.h" | |
| 15 #include "core/fpdfapi/page/cpdf_meshstream.h" | |
| 16 #include "core/fpdfapi/page/cpdf_pageobject.h" | |
| 17 #include "core/fpdfapi/page/cpdf_pathobject.h" | |
| 18 #include "core/fpdfapi/page/cpdf_shadingobject.h" | |
| 19 #include "core/fpdfapi/page/cpdf_shadingpattern.h" | |
| 20 #include "core/fpdfapi/page/cpdf_tilingpattern.h" | |
| 21 #include "core/fpdfapi/page/pageint.h" | |
| 22 #include "core/fpdfapi/parser/cpdf_array.h" | |
| 23 #include "core/fpdfapi/parser/cpdf_dictionary.h" | |
| 24 #include "core/fxge/cfx_fxgedevice.h" | |
| 25 #include "core/fxge/cfx_pathdata.h" | |
| 26 #include "core/fxge/cfx_renderdevice.h" | |
| 27 #include "core/fxge/ifx_renderdevicedriver.h" | |
| 28 | |
| 29 namespace { | |
| 30 | |
| 31 uint32_t CountOutputs( | |
| 32 const std::vector<std::unique_ptr<CPDF_Function>>& funcs) { | |
| 33 uint32_t total = 0; | |
| 34 for (const auto& func : funcs) { | |
| 35 if (func) | |
| 36 total += func->CountOutputs(); | |
| 37 } | |
| 38 return total; | |
| 39 } | |
| 40 | |
| 41 #define SHADING_STEPS 256 | |
| 42 void DrawAxialShading(CFX_DIBitmap* pBitmap, | |
| 43 CFX_Matrix* pObject2Bitmap, | |
| 44 CPDF_Dictionary* pDict, | |
| 45 const std::vector<std::unique_ptr<CPDF_Function>>& funcs, | |
| 46 CPDF_ColorSpace* pCS, | |
| 47 int alpha) { | |
| 48 ASSERT(pBitmap->GetFormat() == FXDIB_Argb); | |
| 49 CPDF_Array* pCoords = pDict->GetArrayFor("Coords"); | |
| 50 if (!pCoords) { | |
| 51 return; | |
| 52 } | |
| 53 FX_FLOAT start_x = pCoords->GetNumberAt(0); | |
| 54 FX_FLOAT start_y = pCoords->GetNumberAt(1); | |
| 55 FX_FLOAT end_x = pCoords->GetNumberAt(2); | |
| 56 FX_FLOAT end_y = pCoords->GetNumberAt(3); | |
| 57 FX_FLOAT t_min = 0, t_max = 1.0f; | |
| 58 CPDF_Array* pArray = pDict->GetArrayFor("Domain"); | |
| 59 if (pArray) { | |
| 60 t_min = pArray->GetNumberAt(0); | |
| 61 t_max = pArray->GetNumberAt(1); | |
| 62 } | |
| 63 FX_BOOL bStartExtend = FALSE, bEndExtend = FALSE; | |
| 64 pArray = pDict->GetArrayFor("Extend"); | |
| 65 if (pArray) { | |
| 66 bStartExtend = pArray->GetIntegerAt(0); | |
| 67 bEndExtend = pArray->GetIntegerAt(1); | |
| 68 } | |
| 69 int width = pBitmap->GetWidth(); | |
| 70 int height = pBitmap->GetHeight(); | |
| 71 FX_FLOAT x_span = end_x - start_x; | |
| 72 FX_FLOAT y_span = end_y - start_y; | |
| 73 FX_FLOAT axis_len_square = (x_span * x_span) + (y_span * y_span); | |
| 74 CFX_Matrix matrix; | |
| 75 matrix.SetReverse(*pObject2Bitmap); | |
| 76 uint32_t total_results = | |
| 77 std::max(CountOutputs(funcs), pCS->CountComponents()); | |
| 78 CFX_FixedBufGrow<FX_FLOAT, 16> result_array(total_results); | |
| 79 FX_FLOAT* pResults = result_array; | |
| 80 FXSYS_memset(pResults, 0, total_results * sizeof(FX_FLOAT)); | |
| 81 uint32_t rgb_array[SHADING_STEPS]; | |
| 82 for (int i = 0; i < SHADING_STEPS; i++) { | |
| 83 FX_FLOAT input = (t_max - t_min) * i / SHADING_STEPS + t_min; | |
| 84 int offset = 0; | |
| 85 for (const auto& func : funcs) { | |
| 86 if (func) { | |
| 87 int nresults = 0; | |
| 88 if (func->Call(&input, 1, pResults + offset, nresults)) | |
| 89 offset += nresults; | |
| 90 } | |
| 91 } | |
| 92 FX_FLOAT R = 0.0f, G = 0.0f, B = 0.0f; | |
| 93 pCS->GetRGB(pResults, R, G, B); | |
| 94 rgb_array[i] = | |
| 95 FXARGB_TODIB(FXARGB_MAKE(alpha, FXSYS_round(R * 255), | |
| 96 FXSYS_round(G * 255), FXSYS_round(B * 255))); | |
| 97 } | |
| 98 int pitch = pBitmap->GetPitch(); | |
| 99 for (int row = 0; row < height; row++) { | |
| 100 uint32_t* dib_buf = (uint32_t*)(pBitmap->GetBuffer() + row * pitch); | |
| 101 for (int column = 0; column < width; column++) { | |
| 102 FX_FLOAT x = (FX_FLOAT)column, y = (FX_FLOAT)row; | |
| 103 matrix.Transform(x, y); | |
| 104 FX_FLOAT scale = (((x - start_x) * x_span) + ((y - start_y) * y_span)) / | |
| 105 axis_len_square; | |
| 106 int index = (int32_t)(scale * (SHADING_STEPS - 1)); | |
| 107 if (index < 0) { | |
| 108 if (!bStartExtend) { | |
| 109 continue; | |
| 110 } | |
| 111 index = 0; | |
| 112 } else if (index >= SHADING_STEPS) { | |
| 113 if (!bEndExtend) { | |
| 114 continue; | |
| 115 } | |
| 116 index = SHADING_STEPS - 1; | |
| 117 } | |
| 118 dib_buf[column] = rgb_array[index]; | |
| 119 } | |
| 120 } | |
| 121 } | |
| 122 | |
| 123 void DrawRadialShading(CFX_DIBitmap* pBitmap, | |
| 124 CFX_Matrix* pObject2Bitmap, | |
| 125 CPDF_Dictionary* pDict, | |
| 126 const std::vector<std::unique_ptr<CPDF_Function>>& funcs, | |
| 127 CPDF_ColorSpace* pCS, | |
| 128 int alpha) { | |
| 129 ASSERT(pBitmap->GetFormat() == FXDIB_Argb); | |
| 130 CPDF_Array* pCoords = pDict->GetArrayFor("Coords"); | |
| 131 if (!pCoords) { | |
| 132 return; | |
| 133 } | |
| 134 FX_FLOAT start_x = pCoords->GetNumberAt(0); | |
| 135 FX_FLOAT start_y = pCoords->GetNumberAt(1); | |
| 136 FX_FLOAT start_r = pCoords->GetNumberAt(2); | |
| 137 FX_FLOAT end_x = pCoords->GetNumberAt(3); | |
| 138 FX_FLOAT end_y = pCoords->GetNumberAt(4); | |
| 139 FX_FLOAT end_r = pCoords->GetNumberAt(5); | |
| 140 CFX_Matrix matrix; | |
| 141 matrix.SetReverse(*pObject2Bitmap); | |
| 142 FX_FLOAT t_min = 0, t_max = 1.0f; | |
| 143 CPDF_Array* pArray = pDict->GetArrayFor("Domain"); | |
| 144 if (pArray) { | |
| 145 t_min = pArray->GetNumberAt(0); | |
| 146 t_max = pArray->GetNumberAt(1); | |
| 147 } | |
| 148 FX_BOOL bStartExtend = FALSE, bEndExtend = FALSE; | |
| 149 pArray = pDict->GetArrayFor("Extend"); | |
| 150 if (pArray) { | |
| 151 bStartExtend = pArray->GetIntegerAt(0); | |
| 152 bEndExtend = pArray->GetIntegerAt(1); | |
| 153 } | |
| 154 uint32_t total_results = | |
| 155 std::max(CountOutputs(funcs), pCS->CountComponents()); | |
| 156 CFX_FixedBufGrow<FX_FLOAT, 16> result_array(total_results); | |
| 157 FX_FLOAT* pResults = result_array; | |
| 158 FXSYS_memset(pResults, 0, total_results * sizeof(FX_FLOAT)); | |
| 159 uint32_t rgb_array[SHADING_STEPS]; | |
| 160 for (int i = 0; i < SHADING_STEPS; i++) { | |
| 161 FX_FLOAT input = (t_max - t_min) * i / SHADING_STEPS + t_min; | |
| 162 int offset = 0; | |
| 163 for (const auto& func : funcs) { | |
| 164 if (func) { | |
| 165 int nresults; | |
| 166 if (func->Call(&input, 1, pResults + offset, nresults)) | |
| 167 offset += nresults; | |
| 168 } | |
| 169 } | |
| 170 FX_FLOAT R = 0.0f, G = 0.0f, B = 0.0f; | |
| 171 pCS->GetRGB(pResults, R, G, B); | |
| 172 rgb_array[i] = | |
| 173 FXARGB_TODIB(FXARGB_MAKE(alpha, FXSYS_round(R * 255), | |
| 174 FXSYS_round(G * 255), FXSYS_round(B * 255))); | |
| 175 } | |
| 176 FX_FLOAT a = ((start_x - end_x) * (start_x - end_x)) + | |
| 177 ((start_y - end_y) * (start_y - end_y)) - | |
| 178 ((start_r - end_r) * (start_r - end_r)); | |
| 179 int width = pBitmap->GetWidth(); | |
| 180 int height = pBitmap->GetHeight(); | |
| 181 int pitch = pBitmap->GetPitch(); | |
| 182 FX_BOOL bDecreasing = FALSE; | |
| 183 if (start_r > end_r) { | |
| 184 int length = (int)FXSYS_sqrt((((start_x - end_x) * (start_x - end_x)) + | |
| 185 ((start_y - end_y) * (start_y - end_y)))); | |
| 186 if (length < start_r - end_r) { | |
| 187 bDecreasing = TRUE; | |
| 188 } | |
| 189 } | |
| 190 for (int row = 0; row < height; row++) { | |
| 191 uint32_t* dib_buf = (uint32_t*)(pBitmap->GetBuffer() + row * pitch); | |
| 192 for (int column = 0; column < width; column++) { | |
| 193 FX_FLOAT x = (FX_FLOAT)column, y = (FX_FLOAT)row; | |
| 194 matrix.Transform(x, y); | |
| 195 FX_FLOAT b = -2 * (((x - start_x) * (end_x - start_x)) + | |
| 196 ((y - start_y) * (end_y - start_y)) + | |
| 197 (start_r * (end_r - start_r))); | |
| 198 FX_FLOAT c = ((x - start_x) * (x - start_x)) + | |
| 199 ((y - start_y) * (y - start_y)) - (start_r * start_r); | |
| 200 FX_FLOAT s; | |
| 201 if (a == 0) { | |
| 202 s = -c / b; | |
| 203 } else { | |
| 204 FX_FLOAT b2_4ac = (b * b) - 4 * (a * c); | |
| 205 if (b2_4ac < 0) { | |
| 206 continue; | |
| 207 } | |
| 208 FX_FLOAT root = FXSYS_sqrt(b2_4ac); | |
| 209 FX_FLOAT s1, s2; | |
| 210 if (a > 0) { | |
| 211 s1 = (-b - root) / (2 * a); | |
| 212 s2 = (-b + root) / (2 * a); | |
| 213 } else { | |
| 214 s2 = (-b - root) / (2 * a); | |
| 215 s1 = (-b + root) / (2 * a); | |
| 216 } | |
| 217 if (bDecreasing) { | |
| 218 if (s1 >= 0 || bStartExtend) { | |
| 219 s = s1; | |
| 220 } else { | |
| 221 s = s2; | |
| 222 } | |
| 223 } else { | |
| 224 if (s2 <= 1.0f || bEndExtend) { | |
| 225 s = s2; | |
| 226 } else { | |
| 227 s = s1; | |
| 228 } | |
| 229 } | |
| 230 if ((start_r + s * (end_r - start_r)) < 0) { | |
| 231 continue; | |
| 232 } | |
| 233 } | |
| 234 int index = (int32_t)(s * (SHADING_STEPS - 1)); | |
| 235 if (index < 0) { | |
| 236 if (!bStartExtend) { | |
| 237 continue; | |
| 238 } | |
| 239 index = 0; | |
| 240 } | |
| 241 if (index >= SHADING_STEPS) { | |
| 242 if (!bEndExtend) { | |
| 243 continue; | |
| 244 } | |
| 245 index = SHADING_STEPS - 1; | |
| 246 } | |
| 247 dib_buf[column] = rgb_array[index]; | |
| 248 } | |
| 249 } | |
| 250 } | |
| 251 | |
| 252 void DrawFuncShading(CFX_DIBitmap* pBitmap, | |
| 253 CFX_Matrix* pObject2Bitmap, | |
| 254 CPDF_Dictionary* pDict, | |
| 255 const std::vector<std::unique_ptr<CPDF_Function>>& funcs, | |
| 256 CPDF_ColorSpace* pCS, | |
| 257 int alpha) { | |
| 258 ASSERT(pBitmap->GetFormat() == FXDIB_Argb); | |
| 259 CPDF_Array* pDomain = pDict->GetArrayFor("Domain"); | |
| 260 FX_FLOAT xmin = 0, ymin = 0, xmax = 1.0f, ymax = 1.0f; | |
| 261 if (pDomain) { | |
| 262 xmin = pDomain->GetNumberAt(0); | |
| 263 xmax = pDomain->GetNumberAt(1); | |
| 264 ymin = pDomain->GetNumberAt(2); | |
| 265 ymax = pDomain->GetNumberAt(3); | |
| 266 } | |
| 267 CFX_Matrix mtDomain2Target = pDict->GetMatrixFor("Matrix"); | |
| 268 CFX_Matrix matrix, reverse_matrix; | |
| 269 matrix.SetReverse(*pObject2Bitmap); | |
| 270 reverse_matrix.SetReverse(mtDomain2Target); | |
| 271 matrix.Concat(reverse_matrix); | |
| 272 int width = pBitmap->GetWidth(); | |
| 273 int height = pBitmap->GetHeight(); | |
| 274 int pitch = pBitmap->GetPitch(); | |
| 275 uint32_t total_results = | |
| 276 std::max(CountOutputs(funcs), pCS->CountComponents()); | |
| 277 CFX_FixedBufGrow<FX_FLOAT, 16> result_array(total_results); | |
| 278 FX_FLOAT* pResults = result_array; | |
| 279 FXSYS_memset(pResults, 0, total_results * sizeof(FX_FLOAT)); | |
| 280 for (int row = 0; row < height; row++) { | |
| 281 uint32_t* dib_buf = (uint32_t*)(pBitmap->GetBuffer() + row * pitch); | |
| 282 for (int column = 0; column < width; column++) { | |
| 283 FX_FLOAT x = (FX_FLOAT)column, y = (FX_FLOAT)row; | |
| 284 matrix.Transform(x, y); | |
| 285 if (x < xmin || x > xmax || y < ymin || y > ymax) { | |
| 286 continue; | |
| 287 } | |
| 288 FX_FLOAT input[2]; | |
| 289 int offset = 0; | |
| 290 input[0] = x; | |
| 291 input[1] = y; | |
| 292 for (const auto& func : funcs) { | |
| 293 if (func) { | |
| 294 int nresults; | |
| 295 if (func->Call(input, 2, pResults + offset, nresults)) | |
| 296 offset += nresults; | |
| 297 } | |
| 298 } | |
| 299 FX_FLOAT R = 0.0f, G = 0.0f, B = 0.0f; | |
| 300 pCS->GetRGB(pResults, R, G, B); | |
| 301 dib_buf[column] = FXARGB_TODIB(FXARGB_MAKE( | |
| 302 alpha, (int32_t)(R * 255), (int32_t)(G * 255), (int32_t)(B * 255))); | |
| 303 } | |
| 304 } | |
| 305 } | |
| 306 | |
| 307 bool GetScanlineIntersect(int y, | |
| 308 FX_FLOAT x1, | |
| 309 FX_FLOAT y1, | |
| 310 FX_FLOAT x2, | |
| 311 FX_FLOAT y2, | |
| 312 FX_FLOAT* x) { | |
| 313 if (y1 == y2) | |
| 314 return FALSE; | |
| 315 | |
| 316 if (y1 < y2) { | |
| 317 if (y < y1 || y > y2) | |
| 318 return FALSE; | |
| 319 } else { | |
| 320 if (y < y2 || y > y1) | |
| 321 return FALSE; | |
| 322 } | |
| 323 *x = x1 + ((x2 - x1) * (y - y1) / (y2 - y1)); | |
| 324 return TRUE; | |
| 325 } | |
| 326 | |
| 327 void DrawGouraud(CFX_DIBitmap* pBitmap, | |
| 328 int alpha, | |
| 329 CPDF_MeshVertex triangle[3]) { | |
| 330 FX_FLOAT min_y = triangle[0].y, max_y = triangle[0].y; | |
| 331 for (int i = 1; i < 3; i++) { | |
| 332 if (min_y > triangle[i].y) { | |
| 333 min_y = triangle[i].y; | |
| 334 } | |
| 335 if (max_y < triangle[i].y) { | |
| 336 max_y = triangle[i].y; | |
| 337 } | |
| 338 } | |
| 339 if (min_y == max_y) { | |
| 340 return; | |
| 341 } | |
| 342 int min_yi = (int)FXSYS_floor(min_y), max_yi = (int)FXSYS_ceil(max_y); | |
| 343 if (min_yi < 0) { | |
| 344 min_yi = 0; | |
| 345 } | |
| 346 if (max_yi >= pBitmap->GetHeight()) { | |
| 347 max_yi = pBitmap->GetHeight() - 1; | |
| 348 } | |
| 349 for (int y = min_yi; y <= max_yi; y++) { | |
| 350 int nIntersects = 0; | |
| 351 FX_FLOAT inter_x[3], r[3], g[3], b[3]; | |
| 352 for (int i = 0; i < 3; i++) { | |
| 353 CPDF_MeshVertex& vertex1 = triangle[i]; | |
| 354 CPDF_MeshVertex& vertex2 = triangle[(i + 1) % 3]; | |
| 355 bool bIntersect = GetScanlineIntersect(y, vertex1.x, vertex1.y, vertex2.x, | |
| 356 vertex2.y, &inter_x[nIntersects]); | |
| 357 if (!bIntersect) | |
| 358 continue; | |
| 359 | |
| 360 FX_FLOAT y_dist = (y - vertex1.y) / (vertex2.y - vertex1.y); | |
| 361 r[nIntersects] = vertex1.r + ((vertex2.r - vertex1.r) * y_dist); | |
| 362 g[nIntersects] = vertex1.g + ((vertex2.g - vertex1.g) * y_dist); | |
| 363 b[nIntersects] = vertex1.b + ((vertex2.b - vertex1.b) * y_dist); | |
| 364 nIntersects++; | |
| 365 } | |
| 366 if (nIntersects != 2) { | |
| 367 continue; | |
| 368 } | |
| 369 int min_x, max_x, start_index, end_index; | |
| 370 if (inter_x[0] < inter_x[1]) { | |
| 371 min_x = (int)FXSYS_floor(inter_x[0]); | |
| 372 max_x = (int)FXSYS_ceil(inter_x[1]); | |
| 373 start_index = 0; | |
| 374 end_index = 1; | |
| 375 } else { | |
| 376 min_x = (int)FXSYS_floor(inter_x[1]); | |
| 377 max_x = (int)FXSYS_ceil(inter_x[0]); | |
| 378 start_index = 1; | |
| 379 end_index = 0; | |
| 380 } | |
| 381 int start_x = min_x, end_x = max_x; | |
| 382 if (start_x < 0) { | |
| 383 start_x = 0; | |
| 384 } | |
| 385 if (end_x > pBitmap->GetWidth()) { | |
| 386 end_x = pBitmap->GetWidth(); | |
| 387 } | |
| 388 uint8_t* dib_buf = | |
| 389 pBitmap->GetBuffer() + y * pBitmap->GetPitch() + start_x * 4; | |
| 390 FX_FLOAT r_unit = (r[end_index] - r[start_index]) / (max_x - min_x); | |
| 391 FX_FLOAT g_unit = (g[end_index] - g[start_index]) / (max_x - min_x); | |
| 392 FX_FLOAT b_unit = (b[end_index] - b[start_index]) / (max_x - min_x); | |
| 393 FX_FLOAT R = r[start_index] + (start_x - min_x) * r_unit; | |
| 394 FX_FLOAT G = g[start_index] + (start_x - min_x) * g_unit; | |
| 395 FX_FLOAT B = b[start_index] + (start_x - min_x) * b_unit; | |
| 396 for (int x = start_x; x < end_x; x++) { | |
| 397 R += r_unit; | |
| 398 G += g_unit; | |
| 399 B += b_unit; | |
| 400 FXARGB_SETDIB(dib_buf, | |
| 401 FXARGB_MAKE(alpha, (int32_t)(R * 255), (int32_t)(G * 255), | |
| 402 (int32_t)(B * 255))); | |
| 403 dib_buf += 4; | |
| 404 } | |
| 405 } | |
| 406 } | |
| 407 | |
| 408 void DrawFreeGouraudShading( | |
| 409 CFX_DIBitmap* pBitmap, | |
| 410 CFX_Matrix* pObject2Bitmap, | |
| 411 CPDF_Stream* pShadingStream, | |
| 412 const std::vector<std::unique_ptr<CPDF_Function>>& funcs, | |
| 413 CPDF_ColorSpace* pCS, | |
| 414 int alpha) { | |
| 415 ASSERT(pBitmap->GetFormat() == FXDIB_Argb); | |
| 416 | |
| 417 CPDF_MeshStream stream(kFreeFormGouraudTriangleMeshShading, funcs, | |
| 418 pShadingStream, pCS); | |
| 419 if (!stream.Load()) | |
| 420 return; | |
| 421 | |
| 422 CPDF_MeshVertex triangle[3]; | |
| 423 FXSYS_memset(triangle, 0, sizeof(triangle)); | |
| 424 | |
| 425 while (!stream.BitStream()->IsEOF()) { | |
| 426 CPDF_MeshVertex vertex; | |
| 427 uint32_t flag = stream.GetVertex(vertex, pObject2Bitmap); | |
| 428 if (flag == 0) { | |
| 429 triangle[0] = vertex; | |
| 430 for (int j = 1; j < 3; j++) { | |
| 431 stream.GetVertex(triangle[j], pObject2Bitmap); | |
| 432 } | |
| 433 } else { | |
| 434 if (flag == 1) { | |
| 435 triangle[0] = triangle[1]; | |
| 436 } | |
| 437 triangle[1] = triangle[2]; | |
| 438 triangle[2] = vertex; | |
| 439 } | |
| 440 DrawGouraud(pBitmap, alpha, triangle); | |
| 441 } | |
| 442 } | |
| 443 | |
| 444 void DrawLatticeGouraudShading( | |
| 445 CFX_DIBitmap* pBitmap, | |
| 446 CFX_Matrix* pObject2Bitmap, | |
| 447 CPDF_Stream* pShadingStream, | |
| 448 const std::vector<std::unique_ptr<CPDF_Function>>& funcs, | |
| 449 CPDF_ColorSpace* pCS, | |
| 450 int alpha) { | |
| 451 ASSERT(pBitmap->GetFormat() == FXDIB_Argb); | |
| 452 | |
| 453 int row_verts = pShadingStream->GetDict()->GetIntegerFor("VerticesPerRow"); | |
| 454 if (row_verts < 2) | |
| 455 return; | |
| 456 | |
| 457 CPDF_MeshStream stream(kLatticeFormGouraudTriangleMeshShading, funcs, | |
| 458 pShadingStream, pCS); | |
| 459 if (!stream.Load()) | |
| 460 return; | |
| 461 | |
| 462 std::unique_ptr<CPDF_MeshVertex, FxFreeDeleter> vertex( | |
| 463 FX_Alloc2D(CPDF_MeshVertex, row_verts, 2)); | |
| 464 if (!stream.GetVertexRow(vertex.get(), row_verts, pObject2Bitmap)) | |
| 465 return; | |
| 466 | |
| 467 int last_index = 0; | |
| 468 while (1) { | |
| 469 CPDF_MeshVertex* last_row = vertex.get() + last_index * row_verts; | |
| 470 CPDF_MeshVertex* this_row = vertex.get() + (1 - last_index) * row_verts; | |
| 471 if (!stream.GetVertexRow(this_row, row_verts, pObject2Bitmap)) | |
| 472 return; | |
| 473 | |
| 474 CPDF_MeshVertex triangle[3]; | |
| 475 for (int i = 1; i < row_verts; i++) { | |
| 476 triangle[0] = last_row[i]; | |
| 477 triangle[1] = this_row[i - 1]; | |
| 478 triangle[2] = last_row[i - 1]; | |
| 479 DrawGouraud(pBitmap, alpha, triangle); | |
| 480 triangle[2] = this_row[i]; | |
| 481 DrawGouraud(pBitmap, alpha, triangle); | |
| 482 } | |
| 483 last_index = 1 - last_index; | |
| 484 } | |
| 485 } | |
| 486 | |
| 487 struct Coon_BezierCoeff { | |
| 488 float a, b, c, d; | |
| 489 void FromPoints(float p0, float p1, float p2, float p3) { | |
| 490 a = -p0 + 3 * p1 - 3 * p2 + p3; | |
| 491 b = 3 * p0 - 6 * p1 + 3 * p2; | |
| 492 c = -3 * p0 + 3 * p1; | |
| 493 d = p0; | |
| 494 } | |
| 495 Coon_BezierCoeff first_half() { | |
| 496 Coon_BezierCoeff result; | |
| 497 result.a = a / 8; | |
| 498 result.b = b / 4; | |
| 499 result.c = c / 2; | |
| 500 result.d = d; | |
| 501 return result; | |
| 502 } | |
| 503 Coon_BezierCoeff second_half() { | |
| 504 Coon_BezierCoeff result; | |
| 505 result.a = a / 8; | |
| 506 result.b = 3 * a / 8 + b / 4; | |
| 507 result.c = 3 * a / 8 + b / 2 + c / 2; | |
| 508 result.d = a / 8 + b / 4 + c / 2 + d; | |
| 509 return result; | |
| 510 } | |
| 511 void GetPoints(float p[4]) { | |
| 512 p[0] = d; | |
| 513 p[1] = c / 3 + p[0]; | |
| 514 p[2] = b / 3 - p[0] + 2 * p[1]; | |
| 515 p[3] = a + p[0] - 3 * p[1] + 3 * p[2]; | |
| 516 } | |
| 517 void GetPointsReverse(float p[4]) { | |
| 518 p[3] = d; | |
| 519 p[2] = c / 3 + p[3]; | |
| 520 p[1] = b / 3 - p[3] + 2 * p[2]; | |
| 521 p[0] = a + p[3] - 3 * p[2] + 3 * p[1]; | |
| 522 } | |
| 523 void BezierInterpol(Coon_BezierCoeff& C1, | |
| 524 Coon_BezierCoeff& C2, | |
| 525 Coon_BezierCoeff& D1, | |
| 526 Coon_BezierCoeff& D2) { | |
| 527 a = (D1.a + D2.a) / 2; | |
| 528 b = (D1.b + D2.b) / 2; | |
| 529 c = (D1.c + D2.c) / 2 - (C1.a / 8 + C1.b / 4 + C1.c / 2) + | |
| 530 (C2.a / 8 + C2.b / 4) + (-C1.d + D2.d) / 2 - (C2.a + C2.b) / 2; | |
| 531 d = C1.a / 8 + C1.b / 4 + C1.c / 2 + C1.d; | |
| 532 } | |
| 533 float Distance() { | |
| 534 float dis = a + b + c; | |
| 535 return dis < 0 ? -dis : dis; | |
| 536 } | |
| 537 }; | |
| 538 | |
| 539 struct Coon_Bezier { | |
| 540 Coon_BezierCoeff x, y; | |
| 541 void FromPoints(float x0, | |
| 542 float y0, | |
| 543 float x1, | |
| 544 float y1, | |
| 545 float x2, | |
| 546 float y2, | |
| 547 float x3, | |
| 548 float y3) { | |
| 549 x.FromPoints(x0, x1, x2, x3); | |
| 550 y.FromPoints(y0, y1, y2, y3); | |
| 551 } | |
| 552 Coon_Bezier first_half() { | |
| 553 Coon_Bezier result; | |
| 554 result.x = x.first_half(); | |
| 555 result.y = y.first_half(); | |
| 556 return result; | |
| 557 } | |
| 558 Coon_Bezier second_half() { | |
| 559 Coon_Bezier result; | |
| 560 result.x = x.second_half(); | |
| 561 result.y = y.second_half(); | |
| 562 return result; | |
| 563 } | |
| 564 void BezierInterpol(Coon_Bezier& C1, | |
| 565 Coon_Bezier& C2, | |
| 566 Coon_Bezier& D1, | |
| 567 Coon_Bezier& D2) { | |
| 568 x.BezierInterpol(C1.x, C2.x, D1.x, D2.x); | |
| 569 y.BezierInterpol(C1.y, C2.y, D1.y, D2.y); | |
| 570 } | |
| 571 void GetPoints(FX_PATHPOINT* pPoints) { | |
| 572 float p[4]; | |
| 573 int i; | |
| 574 x.GetPoints(p); | |
| 575 for (i = 0; i < 4; i++) { | |
| 576 pPoints[i].m_PointX = p[i]; | |
| 577 } | |
| 578 y.GetPoints(p); | |
| 579 for (i = 0; i < 4; i++) { | |
| 580 pPoints[i].m_PointY = p[i]; | |
| 581 } | |
| 582 } | |
| 583 void GetPointsReverse(FX_PATHPOINT* pPoints) { | |
| 584 float p[4]; | |
| 585 int i; | |
| 586 x.GetPointsReverse(p); | |
| 587 for (i = 0; i < 4; i++) { | |
| 588 pPoints[i].m_PointX = p[i]; | |
| 589 } | |
| 590 y.GetPointsReverse(p); | |
| 591 for (i = 0; i < 4; i++) { | |
| 592 pPoints[i].m_PointY = p[i]; | |
| 593 } | |
| 594 } | |
| 595 float Distance() { return x.Distance() + y.Distance(); } | |
| 596 }; | |
| 597 | |
| 598 int BiInterpolImpl(int c0, | |
| 599 int c1, | |
| 600 int c2, | |
| 601 int c3, | |
| 602 int x, | |
| 603 int y, | |
| 604 int x_scale, | |
| 605 int y_scale) { | |
| 606 int x1 = c0 + (c3 - c0) * x / x_scale; | |
| 607 int x2 = c1 + (c2 - c1) * x / x_scale; | |
| 608 return x1 + (x2 - x1) * y / y_scale; | |
| 609 } | |
| 610 | |
| 611 struct Coon_Color { | |
| 612 Coon_Color() { FXSYS_memset(comp, 0, sizeof(int) * 3); } | |
| 613 int comp[3]; | |
| 614 | |
| 615 void BiInterpol(Coon_Color colors[4], | |
| 616 int x, | |
| 617 int y, | |
| 618 int x_scale, | |
| 619 int y_scale) { | |
| 620 for (int i = 0; i < 3; i++) { | |
| 621 comp[i] = BiInterpolImpl(colors[0].comp[i], colors[1].comp[i], | |
| 622 colors[2].comp[i], colors[3].comp[i], x, y, | |
| 623 x_scale, y_scale); | |
| 624 } | |
| 625 } | |
| 626 | |
| 627 int Distance(Coon_Color& o) { | |
| 628 return std::max({FXSYS_abs(comp[0] - o.comp[0]), | |
| 629 FXSYS_abs(comp[1] - o.comp[1]), | |
| 630 FXSYS_abs(comp[2] - o.comp[2])}); | |
| 631 } | |
| 632 }; | |
| 633 | |
| 634 struct CPDF_PatchDrawer { | |
| 635 Coon_Color patch_colors[4]; | |
| 636 int max_delta; | |
| 637 CFX_PathData path; | |
| 638 CFX_RenderDevice* pDevice; | |
| 639 int fill_mode; | |
| 640 int alpha; | |
| 641 void Draw(int x_scale, | |
| 642 int y_scale, | |
| 643 int left, | |
| 644 int bottom, | |
| 645 Coon_Bezier C1, | |
| 646 Coon_Bezier C2, | |
| 647 Coon_Bezier D1, | |
| 648 Coon_Bezier D2) { | |
| 649 FX_BOOL bSmall = C1.Distance() < 2 && C2.Distance() < 2 && | |
| 650 D1.Distance() < 2 && D2.Distance() < 2; | |
| 651 Coon_Color div_colors[4]; | |
| 652 int d_bottom = 0; | |
| 653 int d_left = 0; | |
| 654 int d_top = 0; | |
| 655 int d_right = 0; | |
| 656 div_colors[0].BiInterpol(patch_colors, left, bottom, x_scale, y_scale); | |
| 657 if (!bSmall) { | |
| 658 div_colors[1].BiInterpol(patch_colors, left, bottom + 1, x_scale, | |
| 659 y_scale); | |
| 660 div_colors[2].BiInterpol(patch_colors, left + 1, bottom + 1, x_scale, | |
| 661 y_scale); | |
| 662 div_colors[3].BiInterpol(patch_colors, left + 1, bottom, x_scale, | |
| 663 y_scale); | |
| 664 d_bottom = div_colors[3].Distance(div_colors[0]); | |
| 665 d_left = div_colors[1].Distance(div_colors[0]); | |
| 666 d_top = div_colors[1].Distance(div_colors[2]); | |
| 667 d_right = div_colors[2].Distance(div_colors[3]); | |
| 668 } | |
| 669 #define COONCOLOR_THRESHOLD 4 | |
| 670 if (bSmall || | |
| 671 (d_bottom < COONCOLOR_THRESHOLD && d_left < COONCOLOR_THRESHOLD && | |
| 672 d_top < COONCOLOR_THRESHOLD && d_right < COONCOLOR_THRESHOLD)) { | |
| 673 FX_PATHPOINT* pPoints = path.GetPoints(); | |
| 674 C1.GetPoints(pPoints); | |
| 675 D2.GetPoints(pPoints + 3); | |
| 676 C2.GetPointsReverse(pPoints + 6); | |
| 677 D1.GetPointsReverse(pPoints + 9); | |
| 678 int fillFlags = FXFILL_WINDING | FXFILL_FULLCOVER; | |
| 679 if (fill_mode & RENDER_NOPATHSMOOTH) { | |
| 680 fillFlags |= FXFILL_NOPATHSMOOTH; | |
| 681 } | |
| 682 pDevice->DrawPath( | |
| 683 &path, nullptr, nullptr, | |
| 684 FXARGB_MAKE(alpha, div_colors[0].comp[0], div_colors[0].comp[1], | |
| 685 div_colors[0].comp[2]), | |
| 686 0, fillFlags); | |
| 687 } else { | |
| 688 if (d_bottom < COONCOLOR_THRESHOLD && d_top < COONCOLOR_THRESHOLD) { | |
| 689 Coon_Bezier m1; | |
| 690 m1.BezierInterpol(D1, D2, C1, C2); | |
| 691 y_scale *= 2; | |
| 692 bottom *= 2; | |
| 693 Draw(x_scale, y_scale, left, bottom, C1, m1, D1.first_half(), | |
| 694 D2.first_half()); | |
| 695 Draw(x_scale, y_scale, left, bottom + 1, m1, C2, D1.second_half(), | |
| 696 D2.second_half()); | |
| 697 } else if (d_left < COONCOLOR_THRESHOLD && | |
| 698 d_right < COONCOLOR_THRESHOLD) { | |
| 699 Coon_Bezier m2; | |
| 700 m2.BezierInterpol(C1, C2, D1, D2); | |
| 701 x_scale *= 2; | |
| 702 left *= 2; | |
| 703 Draw(x_scale, y_scale, left, bottom, C1.first_half(), C2.first_half(), | |
| 704 D1, m2); | |
| 705 Draw(x_scale, y_scale, left + 1, bottom, C1.second_half(), | |
| 706 C2.second_half(), m2, D2); | |
| 707 } else { | |
| 708 Coon_Bezier m1, m2; | |
| 709 m1.BezierInterpol(D1, D2, C1, C2); | |
| 710 m2.BezierInterpol(C1, C2, D1, D2); | |
| 711 Coon_Bezier m1f = m1.first_half(); | |
| 712 Coon_Bezier m1s = m1.second_half(); | |
| 713 Coon_Bezier m2f = m2.first_half(); | |
| 714 Coon_Bezier m2s = m2.second_half(); | |
| 715 x_scale *= 2; | |
| 716 y_scale *= 2; | |
| 717 left *= 2; | |
| 718 bottom *= 2; | |
| 719 Draw(x_scale, y_scale, left, bottom, C1.first_half(), m1f, | |
| 720 D1.first_half(), m2f); | |
| 721 Draw(x_scale, y_scale, left, bottom + 1, m1f, C2.first_half(), | |
| 722 D1.second_half(), m2s); | |
| 723 Draw(x_scale, y_scale, left + 1, bottom, C1.second_half(), m1s, m2f, | |
| 724 D2.first_half()); | |
| 725 Draw(x_scale, y_scale, left + 1, bottom + 1, m1s, C2.second_half(), m2s, | |
| 726 D2.second_half()); | |
| 727 } | |
| 728 } | |
| 729 } | |
| 730 }; | |
| 731 | |
| 732 void DrawCoonPatchMeshes( | |
| 733 ShadingType type, | |
| 734 CFX_DIBitmap* pBitmap, | |
| 735 CFX_Matrix* pObject2Bitmap, | |
| 736 CPDF_Stream* pShadingStream, | |
| 737 const std::vector<std::unique_ptr<CPDF_Function>>& funcs, | |
| 738 CPDF_ColorSpace* pCS, | |
| 739 int fill_mode, | |
| 740 int alpha) { | |
| 741 ASSERT(pBitmap->GetFormat() == FXDIB_Argb); | |
| 742 ASSERT(type == kCoonsPatchMeshShading || | |
| 743 type == kTensorProductPatchMeshShading); | |
| 744 | |
| 745 CFX_FxgeDevice device; | |
| 746 device.Attach(pBitmap, false, nullptr, false); | |
| 747 CPDF_MeshStream stream(type, funcs, pShadingStream, pCS); | |
| 748 if (!stream.Load()) | |
| 749 return; | |
| 750 | |
| 751 CPDF_PatchDrawer patch; | |
| 752 patch.alpha = alpha; | |
| 753 patch.pDevice = &device; | |
| 754 patch.fill_mode = fill_mode; | |
| 755 patch.path.SetPointCount(13); | |
| 756 FX_PATHPOINT* pPoints = patch.path.GetPoints(); | |
| 757 pPoints[0].m_Flag = FXPT_MOVETO; | |
| 758 for (int i = 1; i < 13; i++) | |
| 759 pPoints[i].m_Flag = FXPT_BEZIERTO; | |
| 760 CFX_PointF coords[16]; | |
| 761 int point_count = type == kTensorProductPatchMeshShading ? 16 : 12; | |
| 762 while (!stream.BitStream()->IsEOF()) { | |
| 763 uint32_t flag = stream.GetFlag(); | |
| 764 int iStartPoint = 0, iStartColor = 0, i = 0; | |
| 765 if (flag) { | |
| 766 iStartPoint = 4; | |
| 767 iStartColor = 2; | |
| 768 CFX_PointF tempCoords[4]; | |
| 769 for (i = 0; i < 4; i++) { | |
| 770 tempCoords[i] = coords[(flag * 3 + i) % 12]; | |
| 771 } | |
| 772 FXSYS_memcpy(coords, tempCoords, sizeof(tempCoords)); | |
| 773 Coon_Color tempColors[2]; | |
| 774 tempColors[0] = patch.patch_colors[flag]; | |
| 775 tempColors[1] = patch.patch_colors[(flag + 1) % 4]; | |
| 776 FXSYS_memcpy(patch.patch_colors, tempColors, sizeof(Coon_Color) * 2); | |
| 777 } | |
| 778 for (i = iStartPoint; i < point_count; i++) { | |
| 779 stream.GetCoords(coords[i].x, coords[i].y); | |
| 780 pObject2Bitmap->Transform(coords[i].x, coords[i].y); | |
| 781 } | |
| 782 for (i = iStartColor; i < 4; i++) { | |
| 783 FX_FLOAT r = 0.0f, g = 0.0f, b = 0.0f; | |
| 784 stream.GetColor(r, g, b); | |
| 785 patch.patch_colors[i].comp[0] = (int32_t)(r * 255); | |
| 786 patch.patch_colors[i].comp[1] = (int32_t)(g * 255); | |
| 787 patch.patch_colors[i].comp[2] = (int32_t)(b * 255); | |
| 788 } | |
| 789 CFX_FloatRect bbox = CFX_FloatRect::GetBBox(coords, point_count); | |
| 790 if (bbox.right <= 0 || bbox.left >= (FX_FLOAT)pBitmap->GetWidth() || | |
| 791 bbox.top <= 0 || bbox.bottom >= (FX_FLOAT)pBitmap->GetHeight()) { | |
| 792 continue; | |
| 793 } | |
| 794 Coon_Bezier C1, C2, D1, D2; | |
| 795 C1.FromPoints(coords[0].x, coords[0].y, coords[11].x, coords[11].y, | |
| 796 coords[10].x, coords[10].y, coords[9].x, coords[9].y); | |
| 797 C2.FromPoints(coords[3].x, coords[3].y, coords[4].x, coords[4].y, | |
| 798 coords[5].x, coords[5].y, coords[6].x, coords[6].y); | |
| 799 D1.FromPoints(coords[0].x, coords[0].y, coords[1].x, coords[1].y, | |
| 800 coords[2].x, coords[2].y, coords[3].x, coords[3].y); | |
| 801 D2.FromPoints(coords[9].x, coords[9].y, coords[8].x, coords[8].y, | |
| 802 coords[7].x, coords[7].y, coords[6].x, coords[6].y); | |
| 803 patch.Draw(1, 1, 0, 0, C1, C2, D1, D2); | |
| 804 } | |
| 805 } | |
| 806 | |
| 807 std::unique_ptr<CFX_DIBitmap> DrawPatternBitmap( | |
| 808 CPDF_Document* pDoc, | |
| 809 CPDF_PageRenderCache* pCache, | |
| 810 CPDF_TilingPattern* pPattern, | |
| 811 const CFX_Matrix* pObject2Device, | |
| 812 int width, | |
| 813 int height, | |
| 814 int flags) { | |
| 815 std::unique_ptr<CFX_DIBitmap> pBitmap(new CFX_DIBitmap); | |
| 816 if (!pBitmap->Create(width, height, | |
| 817 pPattern->colored() ? FXDIB_Argb : FXDIB_8bppMask)) { | |
| 818 return std::unique_ptr<CFX_DIBitmap>(); | |
| 819 } | |
| 820 CFX_FxgeDevice bitmap_device; | |
| 821 bitmap_device.Attach(pBitmap.get(), false, nullptr, false); | |
| 822 pBitmap->Clear(0); | |
| 823 CFX_FloatRect cell_bbox = pPattern->bbox(); | |
| 824 pPattern->pattern_to_form()->TransformRect(cell_bbox); | |
| 825 pObject2Device->TransformRect(cell_bbox); | |
| 826 CFX_FloatRect bitmap_rect(0.0f, 0.0f, (FX_FLOAT)width, (FX_FLOAT)height); | |
| 827 CFX_Matrix mtAdjust; | |
| 828 mtAdjust.MatchRect(bitmap_rect, cell_bbox); | |
| 829 CFX_Matrix mtPattern2Bitmap = *pObject2Device; | |
| 830 mtPattern2Bitmap.Concat(mtAdjust); | |
| 831 CPDF_RenderOptions options; | |
| 832 if (!pPattern->colored()) | |
| 833 options.m_ColorMode = RENDER_COLOR_ALPHA; | |
| 834 | |
| 835 flags |= RENDER_FORCE_HALFTONE; | |
| 836 options.m_Flags = flags; | |
| 837 CPDF_RenderContext context(pDoc, pCache); | |
| 838 context.AppendLayer(pPattern->form(), &mtPattern2Bitmap); | |
| 839 context.Render(&bitmap_device, &options, nullptr); | |
| 840 return pBitmap; | |
| 841 } | |
| 842 | |
| 843 } // namespace | |
| 844 | |
| 845 void CPDF_RenderStatus::DrawShading(CPDF_ShadingPattern* pPattern, | |
| 846 CFX_Matrix* pMatrix, | |
| 847 FX_RECT& clip_rect, | |
| 848 int alpha, | |
| 849 FX_BOOL bAlphaMode) { | |
| 850 const auto& funcs = pPattern->GetFuncs(); | |
| 851 CPDF_Dictionary* pDict = pPattern->GetShadingObject()->GetDict(); | |
| 852 CPDF_ColorSpace* pColorSpace = pPattern->GetCS(); | |
| 853 if (!pColorSpace) | |
| 854 return; | |
| 855 | |
| 856 FX_ARGB background = 0; | |
| 857 if (!pPattern->IsShadingObject() && pDict->KeyExist("Background")) { | |
| 858 CPDF_Array* pBackColor = pDict->GetArrayFor("Background"); | |
| 859 if (pBackColor && | |
| 860 pBackColor->GetCount() >= pColorSpace->CountComponents()) { | |
| 861 CFX_FixedBufGrow<FX_FLOAT, 16> comps(pColorSpace->CountComponents()); | |
| 862 for (uint32_t i = 0; i < pColorSpace->CountComponents(); i++) | |
| 863 comps[i] = pBackColor->GetNumberAt(i); | |
| 864 FX_FLOAT R = 0.0f, G = 0.0f, B = 0.0f; | |
| 865 pColorSpace->GetRGB(comps, R, G, B); | |
| 866 background = ArgbEncode(255, (int32_t)(R * 255), (int32_t)(G * 255), | |
| 867 (int32_t)(B * 255)); | |
| 868 } | |
| 869 } | |
| 870 if (pDict->KeyExist("BBox")) { | |
| 871 CFX_FloatRect rect = pDict->GetRectFor("BBox"); | |
| 872 rect.Transform(pMatrix); | |
| 873 clip_rect.Intersect(rect.GetOuterRect()); | |
| 874 } | |
| 875 if (m_pDevice->GetDeviceCaps(FXDC_RENDER_CAPS) & FXRC_SHADING && | |
| 876 m_pDevice->GetDeviceDriver()->DrawShading(pPattern, pMatrix, clip_rect, | |
| 877 alpha, bAlphaMode)) { | |
| 878 return; | |
| 879 } | |
| 880 CPDF_DeviceBuffer buffer; | |
| 881 buffer.Initialize(m_pContext, m_pDevice, &clip_rect, m_pCurObj, 150); | |
| 882 CFX_Matrix FinalMatrix = *pMatrix; | |
| 883 FinalMatrix.Concat(*buffer.GetMatrix()); | |
| 884 CFX_DIBitmap* pBitmap = buffer.GetBitmap(); | |
| 885 if (!pBitmap->GetBuffer()) | |
| 886 return; | |
| 887 | |
| 888 pBitmap->Clear(background); | |
| 889 int fill_mode = m_Options.m_Flags; | |
| 890 switch (pPattern->GetShadingType()) { | |
| 891 case kInvalidShading: | |
| 892 case kMaxShading: | |
| 893 return; | |
| 894 case kFunctionBasedShading: | |
| 895 DrawFuncShading(pBitmap, &FinalMatrix, pDict, funcs, pColorSpace, alpha); | |
| 896 break; | |
| 897 case kAxialShading: | |
| 898 DrawAxialShading(pBitmap, &FinalMatrix, pDict, funcs, pColorSpace, alpha); | |
| 899 break; | |
| 900 case kRadialShading: | |
| 901 DrawRadialShading(pBitmap, &FinalMatrix, pDict, funcs, pColorSpace, | |
| 902 alpha); | |
| 903 break; | |
| 904 case kFreeFormGouraudTriangleMeshShading: { | |
| 905 // The shading object can be a stream or a dictionary. We do not handle | |
| 906 // the case of dictionary at the moment. | |
| 907 if (CPDF_Stream* pStream = ToStream(pPattern->GetShadingObject())) { | |
| 908 DrawFreeGouraudShading(pBitmap, &FinalMatrix, pStream, funcs, | |
| 909 pColorSpace, alpha); | |
| 910 } | |
| 911 } break; | |
| 912 case kLatticeFormGouraudTriangleMeshShading: { | |
| 913 // The shading object can be a stream or a dictionary. We do not handle | |
| 914 // the case of dictionary at the moment. | |
| 915 if (CPDF_Stream* pStream = ToStream(pPattern->GetShadingObject())) { | |
| 916 DrawLatticeGouraudShading(pBitmap, &FinalMatrix, pStream, funcs, | |
| 917 pColorSpace, alpha); | |
| 918 } | |
| 919 } break; | |
| 920 case kCoonsPatchMeshShading: | |
| 921 case kTensorProductPatchMeshShading: { | |
| 922 // The shading object can be a stream or a dictionary. We do not handle | |
| 923 // the case of dictionary at the moment. | |
| 924 if (CPDF_Stream* pStream = ToStream(pPattern->GetShadingObject())) { | |
| 925 DrawCoonPatchMeshes(pPattern->GetShadingType(), pBitmap, &FinalMatrix, | |
| 926 pStream, funcs, pColorSpace, fill_mode, alpha); | |
| 927 } | |
| 928 } break; | |
| 929 } | |
| 930 if (bAlphaMode) | |
| 931 pBitmap->LoadChannel(FXDIB_Red, pBitmap, FXDIB_Alpha); | |
| 932 | |
| 933 if (m_Options.m_ColorMode == RENDER_COLOR_GRAY) | |
| 934 pBitmap->ConvertColorScale(m_Options.m_ForeColor, m_Options.m_BackColor); | |
| 935 buffer.OutputToDevice(); | |
| 936 } | |
| 937 | |
| 938 void CPDF_RenderStatus::DrawShadingPattern(CPDF_ShadingPattern* pattern, | |
| 939 const CPDF_PageObject* pPageObj, | |
| 940 const CFX_Matrix* pObj2Device, | |
| 941 FX_BOOL bStroke) { | |
| 942 if (!pattern->Load()) | |
| 943 return; | |
| 944 | |
| 945 m_pDevice->SaveState(); | |
| 946 if (pPageObj->IsPath()) { | |
| 947 if (!SelectClipPath(pPageObj->AsPath(), pObj2Device, bStroke)) { | |
| 948 m_pDevice->RestoreState(false); | |
| 949 return; | |
| 950 } | |
| 951 } else if (pPageObj->IsImage()) { | |
| 952 m_pDevice->SetClip_Rect(pPageObj->GetBBox(pObj2Device)); | |
| 953 } else { | |
| 954 return; | |
| 955 } | |
| 956 FX_RECT rect; | |
| 957 if (GetObjectClippedRect(pPageObj, pObj2Device, FALSE, rect)) { | |
| 958 m_pDevice->RestoreState(false); | |
| 959 return; | |
| 960 } | |
| 961 CFX_Matrix matrix = *pattern->pattern_to_form(); | |
| 962 matrix.Concat(*pObj2Device); | |
| 963 GetScaledMatrix(matrix); | |
| 964 int alpha = | |
| 965 FXSYS_round(255 * (bStroke ? pPageObj->m_GeneralState.GetStrokeAlpha() | |
| 966 : pPageObj->m_GeneralState.GetFillAlpha())); | |
| 967 DrawShading(pattern, &matrix, rect, alpha, | |
| 968 m_Options.m_ColorMode == RENDER_COLOR_ALPHA); | |
| 969 m_pDevice->RestoreState(false); | |
| 970 } | |
| 971 | |
| 972 void CPDF_RenderStatus::ProcessShading(const CPDF_ShadingObject* pShadingObj, | |
| 973 const CFX_Matrix* pObj2Device) { | |
| 974 FX_RECT rect = pShadingObj->GetBBox(pObj2Device); | |
| 975 FX_RECT clip_box = m_pDevice->GetClipBox(); | |
| 976 rect.Intersect(clip_box); | |
| 977 if (rect.IsEmpty()) | |
| 978 return; | |
| 979 | |
| 980 CFX_Matrix matrix = pShadingObj->m_Matrix; | |
| 981 matrix.Concat(*pObj2Device); | |
| 982 DrawShading(pShadingObj->m_pShading, &matrix, rect, | |
| 983 FXSYS_round(255 * pShadingObj->m_GeneralState.GetFillAlpha()), | |
| 984 m_Options.m_ColorMode == RENDER_COLOR_ALPHA); | |
| 985 } | |
| 986 | |
| 987 void CPDF_RenderStatus::DrawTilingPattern(CPDF_TilingPattern* pPattern, | |
| 988 CPDF_PageObject* pPageObj, | |
| 989 const CFX_Matrix* pObj2Device, | |
| 990 FX_BOOL bStroke) { | |
| 991 if (!pPattern->Load()) { | |
| 992 return; | |
| 993 } | |
| 994 m_pDevice->SaveState(); | |
| 995 if (pPageObj->IsPath()) { | |
| 996 if (!SelectClipPath(pPageObj->AsPath(), pObj2Device, bStroke)) { | |
| 997 m_pDevice->RestoreState(false); | |
| 998 return; | |
| 999 } | |
| 1000 } else if (pPageObj->IsImage()) { | |
| 1001 m_pDevice->SetClip_Rect(pPageObj->GetBBox(pObj2Device)); | |
| 1002 } else { | |
| 1003 return; | |
| 1004 } | |
| 1005 FX_RECT clip_box = m_pDevice->GetClipBox(); | |
| 1006 if (clip_box.IsEmpty()) { | |
| 1007 m_pDevice->RestoreState(false); | |
| 1008 return; | |
| 1009 } | |
| 1010 CFX_Matrix dCTM = m_pDevice->GetCTM(); | |
| 1011 FX_FLOAT sa = FXSYS_fabs(dCTM.a); | |
| 1012 FX_FLOAT sd = FXSYS_fabs(dCTM.d); | |
| 1013 clip_box.right = clip_box.left + (int32_t)FXSYS_ceil(clip_box.Width() * sa); | |
| 1014 clip_box.bottom = clip_box.top + (int32_t)FXSYS_ceil(clip_box.Height() * sd); | |
| 1015 CFX_Matrix mtPattern2Device = *pPattern->pattern_to_form(); | |
| 1016 mtPattern2Device.Concat(*pObj2Device); | |
| 1017 GetScaledMatrix(mtPattern2Device); | |
| 1018 FX_BOOL bAligned = FALSE; | |
| 1019 if (pPattern->bbox().left == 0 && pPattern->bbox().bottom == 0 && | |
| 1020 pPattern->bbox().right == pPattern->x_step() && | |
| 1021 pPattern->bbox().top == pPattern->y_step() && | |
| 1022 (mtPattern2Device.IsScaled() || mtPattern2Device.Is90Rotated())) { | |
| 1023 bAligned = TRUE; | |
| 1024 } | |
| 1025 CFX_FloatRect cell_bbox = pPattern->bbox(); | |
| 1026 mtPattern2Device.TransformRect(cell_bbox); | |
| 1027 int width = (int)FXSYS_ceil(cell_bbox.Width()); | |
| 1028 int height = (int)FXSYS_ceil(cell_bbox.Height()); | |
| 1029 if (width == 0) { | |
| 1030 width = 1; | |
| 1031 } | |
| 1032 if (height == 0) { | |
| 1033 height = 1; | |
| 1034 } | |
| 1035 int min_col, max_col, min_row, max_row; | |
| 1036 CFX_Matrix mtDevice2Pattern; | |
| 1037 mtDevice2Pattern.SetReverse(mtPattern2Device); | |
| 1038 CFX_FloatRect clip_box_p(clip_box); | |
| 1039 clip_box_p.Transform(&mtDevice2Pattern); | |
| 1040 | |
| 1041 min_col = (int)FXSYS_ceil((clip_box_p.left - pPattern->bbox().right) / | |
| 1042 pPattern->x_step()); | |
| 1043 max_col = (int)FXSYS_floor((clip_box_p.right - pPattern->bbox().left) / | |
| 1044 pPattern->x_step()); | |
| 1045 min_row = (int)FXSYS_ceil((clip_box_p.bottom - pPattern->bbox().top) / | |
| 1046 pPattern->y_step()); | |
| 1047 max_row = (int)FXSYS_floor((clip_box_p.top - pPattern->bbox().bottom) / | |
| 1048 pPattern->y_step()); | |
| 1049 | |
| 1050 if (width > clip_box.Width() || height > clip_box.Height() || | |
| 1051 width * height > clip_box.Width() * clip_box.Height()) { | |
| 1052 CPDF_GraphicStates* pStates = nullptr; | |
| 1053 if (!pPattern->colored()) | |
| 1054 pStates = CloneObjStates(pPageObj, bStroke); | |
| 1055 | |
| 1056 CPDF_Dictionary* pFormResource = nullptr; | |
| 1057 if (pPattern->form()->m_pFormDict) | |
| 1058 pFormResource = pPattern->form()->m_pFormDict->GetDictFor("Resources"); | |
| 1059 | |
| 1060 for (int col = min_col; col <= max_col; col++) | |
| 1061 for (int row = min_row; row <= max_row; row++) { | |
| 1062 FX_FLOAT orig_x, orig_y; | |
| 1063 orig_x = col * pPattern->x_step(); | |
| 1064 orig_y = row * pPattern->y_step(); | |
| 1065 mtPattern2Device.Transform(orig_x, orig_y); | |
| 1066 CFX_Matrix matrix = *pObj2Device; | |
| 1067 matrix.Translate(orig_x - mtPattern2Device.e, | |
| 1068 orig_y - mtPattern2Device.f); | |
| 1069 m_pDevice->SaveState(); | |
| 1070 CPDF_RenderStatus status; | |
| 1071 status.Initialize(m_pContext, m_pDevice, nullptr, nullptr, this, | |
| 1072 pStates, &m_Options, pPattern->form()->m_Transparency, | |
| 1073 m_bDropObjects, pFormResource); | |
| 1074 status.RenderObjectList(pPattern->form(), &matrix); | |
| 1075 m_pDevice->RestoreState(false); | |
| 1076 } | |
| 1077 m_pDevice->RestoreState(false); | |
| 1078 delete pStates; | |
| 1079 return; | |
| 1080 } | |
| 1081 if (bAligned) { | |
| 1082 int orig_x = FXSYS_round(mtPattern2Device.e); | |
| 1083 int orig_y = FXSYS_round(mtPattern2Device.f); | |
| 1084 min_col = (clip_box.left - orig_x) / width; | |
| 1085 if (clip_box.left < orig_x) { | |
| 1086 min_col--; | |
| 1087 } | |
| 1088 max_col = (clip_box.right - orig_x) / width; | |
| 1089 if (clip_box.right <= orig_x) { | |
| 1090 max_col--; | |
| 1091 } | |
| 1092 min_row = (clip_box.top - orig_y) / height; | |
| 1093 if (clip_box.top < orig_y) { | |
| 1094 min_row--; | |
| 1095 } | |
| 1096 max_row = (clip_box.bottom - orig_y) / height; | |
| 1097 if (clip_box.bottom <= orig_y) { | |
| 1098 max_row--; | |
| 1099 } | |
| 1100 } | |
| 1101 FX_FLOAT left_offset = cell_bbox.left - mtPattern2Device.e; | |
| 1102 FX_FLOAT top_offset = cell_bbox.bottom - mtPattern2Device.f; | |
| 1103 std::unique_ptr<CFX_DIBitmap> pPatternBitmap; | |
| 1104 if (width * height < 16) { | |
| 1105 std::unique_ptr<CFX_DIBitmap> pEnlargedBitmap = | |
| 1106 DrawPatternBitmap(m_pContext->GetDocument(), m_pContext->GetPageCache(), | |
| 1107 pPattern, pObj2Device, 8, 8, m_Options.m_Flags); | |
| 1108 pPatternBitmap.reset(pEnlargedBitmap->StretchTo(width, height)); | |
| 1109 } else { | |
| 1110 pPatternBitmap = DrawPatternBitmap( | |
| 1111 m_pContext->GetDocument(), m_pContext->GetPageCache(), pPattern, | |
| 1112 pObj2Device, width, height, m_Options.m_Flags); | |
| 1113 } | |
| 1114 if (!pPatternBitmap) { | |
| 1115 m_pDevice->RestoreState(false); | |
| 1116 return; | |
| 1117 } | |
| 1118 if (m_Options.m_ColorMode == RENDER_COLOR_GRAY) { | |
| 1119 pPatternBitmap->ConvertColorScale(m_Options.m_ForeColor, | |
| 1120 m_Options.m_BackColor); | |
| 1121 } | |
| 1122 FX_ARGB fill_argb = GetFillArgb(pPageObj); | |
| 1123 int clip_width = clip_box.right - clip_box.left; | |
| 1124 int clip_height = clip_box.bottom - clip_box.top; | |
| 1125 CFX_DIBitmap screen; | |
| 1126 if (!screen.Create(clip_width, clip_height, FXDIB_Argb)) { | |
| 1127 return; | |
| 1128 } | |
| 1129 screen.Clear(0); | |
| 1130 uint32_t* src_buf = (uint32_t*)pPatternBitmap->GetBuffer(); | |
| 1131 for (int col = min_col; col <= max_col; col++) { | |
| 1132 for (int row = min_row; row <= max_row; row++) { | |
| 1133 int start_x, start_y; | |
| 1134 if (bAligned) { | |
| 1135 start_x = FXSYS_round(mtPattern2Device.e) + col * width - clip_box.left; | |
| 1136 start_y = FXSYS_round(mtPattern2Device.f) + row * height - clip_box.top; | |
| 1137 } else { | |
| 1138 FX_FLOAT orig_x = col * pPattern->x_step(); | |
| 1139 FX_FLOAT orig_y = row * pPattern->y_step(); | |
| 1140 mtPattern2Device.Transform(orig_x, orig_y); | |
| 1141 | |
| 1142 pdfium::base::CheckedNumeric<int> safeStartX = | |
| 1143 FXSYS_round(orig_x + left_offset); | |
| 1144 pdfium::base::CheckedNumeric<int> safeStartY = | |
| 1145 FXSYS_round(orig_y + top_offset); | |
| 1146 | |
| 1147 safeStartX -= clip_box.left; | |
| 1148 safeStartY -= clip_box.top; | |
| 1149 if (!safeStartX.IsValid() || !safeStartY.IsValid()) | |
| 1150 return; | |
| 1151 | |
| 1152 start_x = safeStartX.ValueOrDie(); | |
| 1153 start_y = safeStartY.ValueOrDie(); | |
| 1154 } | |
| 1155 if (width == 1 && height == 1) { | |
| 1156 if (start_x < 0 || start_x >= clip_box.Width() || start_y < 0 || | |
| 1157 start_y >= clip_box.Height()) { | |
| 1158 continue; | |
| 1159 } | |
| 1160 uint32_t* dest_buf = | |
| 1161 (uint32_t*)(screen.GetBuffer() + screen.GetPitch() * start_y + | |
| 1162 start_x * 4); | |
| 1163 if (pPattern->colored()) | |
| 1164 *dest_buf = *src_buf; | |
| 1165 else | |
| 1166 *dest_buf = (*(uint8_t*)src_buf << 24) | (fill_argb & 0xffffff); | |
| 1167 } else { | |
| 1168 if (pPattern->colored()) { | |
| 1169 screen.CompositeBitmap(start_x, start_y, width, height, | |
| 1170 pPatternBitmap.get(), 0, 0); | |
| 1171 } else { | |
| 1172 screen.CompositeMask(start_x, start_y, width, height, | |
| 1173 pPatternBitmap.get(), fill_argb, 0, 0); | |
| 1174 } | |
| 1175 } | |
| 1176 } | |
| 1177 } | |
| 1178 CompositeDIBitmap(&screen, clip_box.left, clip_box.top, 0, 255, | |
| 1179 FXDIB_BLEND_NORMAL, FALSE); | |
| 1180 m_pDevice->RestoreState(false); | |
| 1181 } | |
| 1182 | |
| 1183 void CPDF_RenderStatus::DrawPathWithPattern(CPDF_PathObject* pPathObj, | |
| 1184 const CFX_Matrix* pObj2Device, | |
| 1185 const CPDF_Color* pColor, | |
| 1186 FX_BOOL bStroke) { | |
| 1187 CPDF_Pattern* pattern = pColor->GetPattern(); | |
| 1188 if (!pattern) | |
| 1189 return; | |
| 1190 | |
| 1191 if (CPDF_TilingPattern* pTilingPattern = pattern->AsTilingPattern()) | |
| 1192 DrawTilingPattern(pTilingPattern, pPathObj, pObj2Device, bStroke); | |
| 1193 else if (CPDF_ShadingPattern* pShadingPattern = pattern->AsShadingPattern()) | |
| 1194 DrawShadingPattern(pShadingPattern, pPathObj, pObj2Device, bStroke); | |
| 1195 } | |
| 1196 | |
| 1197 void CPDF_RenderStatus::ProcessPathPattern(CPDF_PathObject* pPathObj, | |
| 1198 const CFX_Matrix* pObj2Device, | |
| 1199 int& filltype, | |
| 1200 FX_BOOL& bStroke) { | |
| 1201 if (filltype) { | |
| 1202 const CPDF_Color& FillColor = *pPathObj->m_ColorState.GetFillColor(); | |
| 1203 if (FillColor.IsPattern()) { | |
| 1204 DrawPathWithPattern(pPathObj, pObj2Device, &FillColor, FALSE); | |
| 1205 filltype = 0; | |
| 1206 } | |
| 1207 } | |
| 1208 if (bStroke) { | |
| 1209 const CPDF_Color& StrokeColor = *pPathObj->m_ColorState.GetStrokeColor(); | |
| 1210 if (StrokeColor.IsPattern()) { | |
| 1211 DrawPathWithPattern(pPathObj, pObj2Device, &StrokeColor, TRUE); | |
| 1212 bStroke = FALSE; | |
| 1213 } | |
| 1214 } | |
| 1215 } | |
| OLD | NEW |
|---|
Chromium Code Reviews
Issue 2393593002:
Move core/fpdfapi/fpdf_render to core/fpdfapi/render (Closed)
