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Side by Side Diff: core/fpdfapi/fpdf_render/fpdf_render.cpp

Issue 2393593002: Move core/fpdfapi/fpdf_render to core/fpdfapi/render (Closed)
Patch Set: Rebase to master Created 4 years, 2 months ago
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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_render/render_int.h"
8
9 #include <memory>
10
11 #include "core/fpdfapi/cpdf_modulemgr.h"
12 #include "core/fpdfapi/font/cpdf_type3char.h"
13 #include "core/fpdfapi/font/cpdf_type3font.h"
14 #include "core/fpdfapi/fpdf_render/cpdf_pagerendercache.h"
15 #include "core/fpdfapi/fpdf_render/cpdf_progressiverenderer.h"
16 #include "core/fpdfapi/fpdf_render/cpdf_renderoptions.h"
17 #include "core/fpdfapi/fpdf_render/cpdf_textrenderer.h"
18 #include "core/fpdfapi/fpdf_render/cpdf_type3cache.h"
19 #include "core/fpdfapi/page/cpdf_form.h"
20 #include "core/fpdfapi/page/cpdf_formobject.h"
21 #include "core/fpdfapi/page/cpdf_graphicstates.h"
22 #include "core/fpdfapi/page/cpdf_image.h"
23 #include "core/fpdfapi/page/cpdf_imageobject.h"
24 #include "core/fpdfapi/page/cpdf_page.h"
25 #include "core/fpdfapi/page/cpdf_pageobject.h"
26 #include "core/fpdfapi/page/cpdf_pathobject.h"
27 #include "core/fpdfapi/page/cpdf_textobject.h"
28 #include "core/fpdfapi/page/pageint.h"
29 #include "core/fpdfapi/parser/cpdf_array.h"
30 #include "core/fpdfapi/parser/cpdf_dictionary.h"
31 #include "core/fpdfapi/parser/cpdf_document.h"
32 #include "core/fpdfdoc/cpdf_occontext.h"
33 #include "core/fxge/cfx_fxgedevice.h"
34 #include "core/fxge/cfx_graphstatedata.h"
35 #include "core/fxge/cfx_pathdata.h"
36 #include "core/fxge/cfx_renderdevice.h"
37
38 CPDF_DocRenderData::CPDF_DocRenderData(CPDF_Document* pPDFDoc)
39 : m_pPDFDoc(pPDFDoc) {}
40
41 CPDF_DocRenderData::~CPDF_DocRenderData() {
42 Clear(TRUE);
43 }
44
45 void CPDF_DocRenderData::Clear(FX_BOOL bRelease) {
46 for (auto it = m_Type3FaceMap.begin(); it != m_Type3FaceMap.end();) {
47 auto curr_it = it++;
48 CPDF_CountedObject<CPDF_Type3Cache>* cache = curr_it->second;
49 if (bRelease || cache->use_count() < 2) {
50 delete cache->get();
51 delete cache;
52 m_Type3FaceMap.erase(curr_it);
53 }
54 }
55
56 for (auto it = m_TransferFuncMap.begin(); it != m_TransferFuncMap.end();) {
57 auto curr_it = it++;
58 CPDF_CountedObject<CPDF_TransferFunc>* value = curr_it->second;
59 if (bRelease || value->use_count() < 2) {
60 delete value->get();
61 delete value;
62 m_TransferFuncMap.erase(curr_it);
63 }
64 }
65 }
66
67 CPDF_Type3Cache* CPDF_DocRenderData::GetCachedType3(CPDF_Type3Font* pFont) {
68 CPDF_CountedObject<CPDF_Type3Cache>* pCache;
69 auto it = m_Type3FaceMap.find(pFont);
70 if (it == m_Type3FaceMap.end()) {
71 CPDF_Type3Cache* pType3 = new CPDF_Type3Cache(pFont);
72 pCache = new CPDF_CountedObject<CPDF_Type3Cache>(pType3);
73 m_Type3FaceMap[pFont] = pCache;
74 } else {
75 pCache = it->second;
76 }
77 return pCache->AddRef();
78 }
79
80 void CPDF_DocRenderData::ReleaseCachedType3(CPDF_Type3Font* pFont) {
81 auto it = m_Type3FaceMap.find(pFont);
82 if (it != m_Type3FaceMap.end())
83 it->second->RemoveRef();
84 }
85
86 CPDF_RenderOptions::CPDF_RenderOptions()
87 : m_ColorMode(RENDER_COLOR_NORMAL),
88 m_Flags(RENDER_CLEARTYPE),
89 m_Interpolation(0),
90 m_AddFlags(0),
91 m_pOCContext(nullptr),
92 m_dwLimitCacheSize(1024 * 1024 * 100),
93 m_HalftoneLimit(-1),
94 m_bDrawAnnots(false) {}
95
96 CPDF_RenderOptions::CPDF_RenderOptions(const CPDF_RenderOptions& rhs)
97 : m_ColorMode(rhs.m_ColorMode),
98 m_BackColor(rhs.m_BackColor),
99 m_ForeColor(rhs.m_ForeColor),
100 m_Flags(rhs.m_Flags),
101 m_Interpolation(rhs.m_Interpolation),
102 m_AddFlags(rhs.m_AddFlags),
103 m_pOCContext(rhs.m_pOCContext),
104 m_dwLimitCacheSize(rhs.m_dwLimitCacheSize),
105 m_HalftoneLimit(rhs.m_HalftoneLimit),
106 m_bDrawAnnots(rhs.m_bDrawAnnots) {}
107
108 FX_ARGB CPDF_RenderOptions::TranslateColor(FX_ARGB argb) const {
109 if (m_ColorMode == RENDER_COLOR_NORMAL) {
110 return argb;
111 }
112 if (m_ColorMode == RENDER_COLOR_ALPHA) {
113 return argb;
114 }
115 int a, r, g, b;
116 ArgbDecode(argb, a, r, g, b);
117 int gray = FXRGB2GRAY(r, g, b);
118 if (m_ColorMode == RENDER_COLOR_TWOCOLOR) {
119 int color = (r - gray) * (r - gray) + (g - gray) * (g - gray) +
120 (b - gray) * (b - gray);
121 if (gray < 35 && color < 20) {
122 return ArgbEncode(a, m_ForeColor);
123 }
124 if (gray > 221 && color < 20) {
125 return ArgbEncode(a, m_BackColor);
126 }
127 return argb;
128 }
129 int fr = FXSYS_GetRValue(m_ForeColor);
130 int fg = FXSYS_GetGValue(m_ForeColor);
131 int fb = FXSYS_GetBValue(m_ForeColor);
132 int br = FXSYS_GetRValue(m_BackColor);
133 int bg = FXSYS_GetGValue(m_BackColor);
134 int bb = FXSYS_GetBValue(m_BackColor);
135 r = (br - fr) * gray / 255 + fr;
136 g = (bg - fg) * gray / 255 + fg;
137 b = (bb - fb) * gray / 255 + fb;
138 return ArgbEncode(a, r, g, b);
139 }
140
141 // static
142 int CPDF_RenderStatus::s_CurrentRecursionDepth = 0;
143
144 CPDF_RenderStatus::CPDF_RenderStatus()
145 : m_pFormResource(nullptr),
146 m_pPageResource(nullptr),
147 m_pContext(nullptr),
148 m_bStopped(FALSE),
149 m_pDevice(nullptr),
150 m_pCurObj(nullptr),
151 m_pStopObj(nullptr),
152 m_HalftoneLimit(0),
153 m_bPrint(FALSE),
154 m_Transparency(0),
155 m_bDropObjects(FALSE),
156 m_bStdCS(FALSE),
157 m_GroupFamily(0),
158 m_bLoadMask(FALSE),
159 m_pType3Char(nullptr),
160 m_T3FillColor(0),
161 m_curBlend(FXDIB_BLEND_NORMAL) {}
162
163 CPDF_RenderStatus::~CPDF_RenderStatus() {}
164
165 FX_BOOL CPDF_RenderStatus::Initialize(CPDF_RenderContext* pContext,
166 CFX_RenderDevice* pDevice,
167 const CFX_Matrix* pDeviceMatrix,
168 const CPDF_PageObject* pStopObj,
169 const CPDF_RenderStatus* pParentState,
170 const CPDF_GraphicStates* pInitialStates,
171 const CPDF_RenderOptions* pOptions,
172 int transparency,
173 FX_BOOL bDropObjects,
174 CPDF_Dictionary* pFormResource,
175 FX_BOOL bStdCS,
176 CPDF_Type3Char* pType3Char,
177 FX_ARGB fill_color,
178 uint32_t GroupFamily,
179 FX_BOOL bLoadMask) {
180 m_pContext = pContext;
181 m_pDevice = pDevice;
182 m_bPrint = m_pDevice->GetDeviceClass() != FXDC_DISPLAY;
183 if (pDeviceMatrix) {
184 m_DeviceMatrix = *pDeviceMatrix;
185 }
186 m_pStopObj = pStopObj;
187 if (pOptions) {
188 m_Options = *pOptions;
189 }
190 m_bDropObjects = bDropObjects;
191 m_bStdCS = bStdCS;
192 m_T3FillColor = fill_color;
193 m_pType3Char = pType3Char;
194 m_GroupFamily = GroupFamily;
195 m_bLoadMask = bLoadMask;
196 m_pFormResource = pFormResource;
197 m_pPageResource = m_pContext->GetPageResources();
198 if (pInitialStates && !m_pType3Char) {
199 m_InitialStates.CopyStates(*pInitialStates);
200 if (pParentState) {
201 if (!m_InitialStates.m_ColorState.HasFillColor()) {
202 m_InitialStates.m_ColorState.SetFillRGB(
203 pParentState->m_InitialStates.m_ColorState.GetFillRGB());
204 m_InitialStates.m_ColorState.GetMutableFillColor()->Copy(
205 pParentState->m_InitialStates.m_ColorState.GetFillColor());
206 }
207 if (!m_InitialStates.m_ColorState.HasStrokeColor()) {
208 m_InitialStates.m_ColorState.SetStrokeRGB(
209 pParentState->m_InitialStates.m_ColorState.GetFillRGB());
210 m_InitialStates.m_ColorState.GetMutableStrokeColor()->Copy(
211 pParentState->m_InitialStates.m_ColorState.GetStrokeColor());
212 }
213 }
214 } else {
215 m_InitialStates.DefaultStates();
216 }
217 m_pImageRenderer.reset();
218 m_Transparency = transparency;
219 return TRUE;
220 }
221 void CPDF_RenderStatus::RenderObjectList(
222 const CPDF_PageObjectHolder* pObjectHolder,
223 const CFX_Matrix* pObj2Device) {
224 #if defined _SKIA_SUPPORT_
225 DebugVerifyDeviceIsPreMultiplied();
226 #endif
227 CFX_FloatRect clip_rect(m_pDevice->GetClipBox());
228 CFX_Matrix device2object;
229 device2object.SetReverse(*pObj2Device);
230 device2object.TransformRect(clip_rect);
231
232 for (const auto& pCurObj : *pObjectHolder->GetPageObjectList()) {
233 if (pCurObj.get() == m_pStopObj) {
234 m_bStopped = TRUE;
235 return;
236 }
237 if (!pCurObj)
238 continue;
239
240 if (pCurObj->m_Left > clip_rect.right ||
241 pCurObj->m_Right < clip_rect.left ||
242 pCurObj->m_Bottom > clip_rect.top ||
243 pCurObj->m_Top < clip_rect.bottom) {
244 continue;
245 }
246 RenderSingleObject(pCurObj.get(), pObj2Device);
247 if (m_bStopped)
248 return;
249 }
250 #if defined _SKIA_SUPPORT_
251 DebugVerifyDeviceIsPreMultiplied();
252 #endif
253 }
254
255 void CPDF_RenderStatus::RenderSingleObject(CPDF_PageObject* pObj,
256 const CFX_Matrix* pObj2Device) {
257 #if defined _SKIA_SUPPORT_
258 DebugVerifyDeviceIsPreMultiplied();
259 #endif
260 CFX_AutoRestorer<int> restorer(&s_CurrentRecursionDepth);
261 if (++s_CurrentRecursionDepth > kRenderMaxRecursionDepth) {
262 return;
263 }
264 m_pCurObj = pObj;
265 if (m_Options.m_pOCContext && pObj->m_ContentMark) {
266 if (!m_Options.m_pOCContext->CheckObjectVisible(pObj)) {
267 return;
268 }
269 }
270 ProcessClipPath(pObj->m_ClipPath, pObj2Device);
271 if (ProcessTransparency(pObj, pObj2Device)) {
272 return;
273 }
274 ProcessObjectNoClip(pObj, pObj2Device);
275 #if defined _SKIA_SUPPORT_
276 DebugVerifyDeviceIsPreMultiplied();
277 #endif
278 }
279
280 FX_BOOL CPDF_RenderStatus::ContinueSingleObject(CPDF_PageObject* pObj,
281 const CFX_Matrix* pObj2Device,
282 IFX_Pause* pPause) {
283 if (m_pImageRenderer) {
284 if (m_pImageRenderer->Continue(pPause))
285 return TRUE;
286
287 if (!m_pImageRenderer->m_Result)
288 DrawObjWithBackground(pObj, pObj2Device);
289 m_pImageRenderer.reset();
290 return FALSE;
291 }
292
293 m_pCurObj = pObj;
294 if (m_Options.m_pOCContext && pObj->m_ContentMark &&
295 !m_Options.m_pOCContext->CheckObjectVisible(pObj)) {
296 return FALSE;
297 }
298
299 ProcessClipPath(pObj->m_ClipPath, pObj2Device);
300 if (ProcessTransparency(pObj, pObj2Device))
301 return FALSE;
302
303 if (pObj->IsImage()) {
304 m_pImageRenderer.reset(new CPDF_ImageRenderer);
305 if (!m_pImageRenderer->Start(this, pObj, pObj2Device, FALSE)) {
306 if (!m_pImageRenderer->m_Result)
307 DrawObjWithBackground(pObj, pObj2Device);
308 m_pImageRenderer.reset();
309 return FALSE;
310 }
311 return ContinueSingleObject(pObj, pObj2Device, pPause);
312 }
313
314 ProcessObjectNoClip(pObj, pObj2Device);
315 return FALSE;
316 }
317
318 FX_BOOL CPDF_RenderStatus::GetObjectClippedRect(const CPDF_PageObject* pObj,
319 const CFX_Matrix* pObj2Device,
320 FX_BOOL bLogical,
321 FX_RECT& rect) const {
322 rect = pObj->GetBBox(pObj2Device);
323 FX_RECT rtClip = m_pDevice->GetClipBox();
324 if (!bLogical) {
325 CFX_Matrix dCTM = m_pDevice->GetCTM();
326 FX_FLOAT a = FXSYS_fabs(dCTM.a);
327 FX_FLOAT d = FXSYS_fabs(dCTM.d);
328 if (a != 1.0f || d != 1.0f) {
329 rect.right = rect.left + (int32_t)FXSYS_ceil((FX_FLOAT)rect.Width() * a);
330 rect.bottom = rect.top + (int32_t)FXSYS_ceil((FX_FLOAT)rect.Height() * d);
331 rtClip.right =
332 rtClip.left + (int32_t)FXSYS_ceil((FX_FLOAT)rtClip.Width() * a);
333 rtClip.bottom =
334 rtClip.top + (int32_t)FXSYS_ceil((FX_FLOAT)rtClip.Height() * d);
335 }
336 }
337 rect.Intersect(rtClip);
338 return rect.IsEmpty();
339 }
340
341 void CPDF_RenderStatus::ProcessObjectNoClip(CPDF_PageObject* pObj,
342 const CFX_Matrix* pObj2Device) {
343 #if defined _SKIA_SUPPORT_
344 DebugVerifyDeviceIsPreMultiplied();
345 #endif
346 FX_BOOL bRet = FALSE;
347 switch (pObj->GetType()) {
348 case CPDF_PageObject::TEXT:
349 bRet = ProcessText(pObj->AsText(), pObj2Device, nullptr);
350 break;
351 case CPDF_PageObject::PATH:
352 bRet = ProcessPath(pObj->AsPath(), pObj2Device);
353 break;
354 case CPDF_PageObject::IMAGE:
355 bRet = ProcessImage(pObj->AsImage(), pObj2Device);
356 break;
357 case CPDF_PageObject::SHADING:
358 ProcessShading(pObj->AsShading(), pObj2Device);
359 return;
360 case CPDF_PageObject::FORM:
361 bRet = ProcessForm(pObj->AsForm(), pObj2Device);
362 break;
363 }
364 if (!bRet)
365 DrawObjWithBackground(pObj, pObj2Device);
366 #if defined _SKIA_SUPPORT_
367 DebugVerifyDeviceIsPreMultiplied();
368 #endif
369 }
370
371 FX_BOOL CPDF_RenderStatus::DrawObjWithBlend(CPDF_PageObject* pObj,
372 const CFX_Matrix* pObj2Device) {
373 FX_BOOL bRet = FALSE;
374 switch (pObj->GetType()) {
375 case CPDF_PageObject::PATH:
376 bRet = ProcessPath(pObj->AsPath(), pObj2Device);
377 break;
378 case CPDF_PageObject::IMAGE:
379 bRet = ProcessImage(pObj->AsImage(), pObj2Device);
380 break;
381 case CPDF_PageObject::FORM:
382 bRet = ProcessForm(pObj->AsForm(), pObj2Device);
383 break;
384 default:
385 break;
386 }
387 return bRet;
388 }
389 void CPDF_RenderStatus::GetScaledMatrix(CFX_Matrix& matrix) const {
390 CFX_Matrix dCTM = m_pDevice->GetCTM();
391 matrix.a *= FXSYS_fabs(dCTM.a);
392 matrix.d *= FXSYS_fabs(dCTM.d);
393 }
394
395 void CPDF_RenderStatus::DrawObjWithBackground(CPDF_PageObject* pObj,
396 const CFX_Matrix* pObj2Device) {
397 FX_RECT rect;
398 if (GetObjectClippedRect(pObj, pObj2Device, FALSE, rect)) {
399 return;
400 }
401 int res = 300;
402 if (pObj->IsImage() &&
403 m_pDevice->GetDeviceCaps(FXDC_DEVICE_CLASS) == FXDC_PRINTER) {
404 res = 0;
405 }
406 CPDF_ScaledRenderBuffer buffer;
407 if (!buffer.Initialize(m_pContext, m_pDevice, rect, pObj, &m_Options, res)) {
408 return;
409 }
410 CFX_Matrix matrix = *pObj2Device;
411 matrix.Concat(*buffer.GetMatrix());
412 GetScaledMatrix(matrix);
413 CPDF_Dictionary* pFormResource = nullptr;
414 if (pObj->IsForm()) {
415 const CPDF_FormObject* pFormObj = pObj->AsForm();
416 if (pFormObj->m_pForm && pFormObj->m_pForm->m_pFormDict) {
417 pFormResource = pFormObj->m_pForm->m_pFormDict->GetDictFor("Resources");
418 }
419 }
420 CPDF_RenderStatus status;
421 status.Initialize(m_pContext, buffer.GetDevice(), buffer.GetMatrix(), nullptr,
422 nullptr, nullptr, &m_Options, m_Transparency,
423 m_bDropObjects, pFormResource);
424 status.RenderSingleObject(pObj, &matrix);
425 buffer.OutputToDevice();
426 }
427
428 FX_BOOL CPDF_RenderStatus::ProcessForm(const CPDF_FormObject* pFormObj,
429 const CFX_Matrix* pObj2Device) {
430 #if defined _SKIA_SUPPORT_
431 DebugVerifyDeviceIsPreMultiplied();
432 #endif
433 CPDF_Dictionary* pOC = pFormObj->m_pForm->m_pFormDict->GetDictFor("OC");
434 if (pOC && m_Options.m_pOCContext &&
435 !m_Options.m_pOCContext->CheckOCGVisible(pOC)) {
436 return TRUE;
437 }
438 CFX_Matrix matrix = pFormObj->m_FormMatrix;
439 matrix.Concat(*pObj2Device);
440 CPDF_Dictionary* pResources = nullptr;
441 if (pFormObj->m_pForm && pFormObj->m_pForm->m_pFormDict) {
442 pResources = pFormObj->m_pForm->m_pFormDict->GetDictFor("Resources");
443 }
444 CPDF_RenderStatus status;
445 status.Initialize(m_pContext, m_pDevice, nullptr, m_pStopObj, this, pFormObj,
446 &m_Options, m_Transparency, m_bDropObjects, pResources,
447 FALSE);
448 status.m_curBlend = m_curBlend;
449 m_pDevice->SaveState();
450 status.RenderObjectList(pFormObj->m_pForm.get(), &matrix);
451 m_bStopped = status.m_bStopped;
452 m_pDevice->RestoreState(false);
453 #if defined _SKIA_SUPPORT_
454 DebugVerifyDeviceIsPreMultiplied();
455 #endif
456 return TRUE;
457 }
458
459 FX_BOOL IsAvailableMatrix(const CFX_Matrix& matrix) {
460 if (matrix.a == 0 || matrix.d == 0) {
461 return matrix.b != 0 && matrix.c != 0;
462 }
463 if (matrix.b == 0 || matrix.c == 0) {
464 return matrix.a != 0 && matrix.d != 0;
465 }
466 return TRUE;
467 }
468
469 FX_BOOL CPDF_RenderStatus::ProcessPath(CPDF_PathObject* pPathObj,
470 const CFX_Matrix* pObj2Device) {
471 int FillType = pPathObj->m_FillType;
472 FX_BOOL bStroke = pPathObj->m_bStroke;
473 ProcessPathPattern(pPathObj, pObj2Device, FillType, bStroke);
474 if (FillType == 0 && !bStroke)
475 return TRUE;
476
477 uint32_t fill_argb = FillType ? GetFillArgb(pPathObj) : 0;
478 uint32_t stroke_argb = bStroke ? GetStrokeArgb(pPathObj) : 0;
479 CFX_Matrix path_matrix = pPathObj->m_Matrix;
480 path_matrix.Concat(*pObj2Device);
481 if (!IsAvailableMatrix(path_matrix))
482 return TRUE;
483
484 if (FillType && (m_Options.m_Flags & RENDER_RECT_AA))
485 FillType |= FXFILL_RECT_AA;
486 if (m_Options.m_Flags & RENDER_FILL_FULLCOVER)
487 FillType |= FXFILL_FULLCOVER;
488 if (m_Options.m_Flags & RENDER_NOPATHSMOOTH)
489 FillType |= FXFILL_NOPATHSMOOTH;
490 if (bStroke)
491 FillType |= FX_FILL_STROKE;
492
493 const CPDF_PageObject* pPageObj =
494 static_cast<const CPDF_PageObject*>(pPathObj);
495 if (pPageObj->m_GeneralState.GetStrokeAdjust())
496 FillType |= FX_STROKE_ADJUST;
497 if (m_pType3Char)
498 FillType |= FX_FILL_TEXT_MODE;
499
500 CFX_GraphState graphState = pPathObj->m_GraphState;
501 if (m_Options.m_Flags & RENDER_THINLINE)
502 graphState.SetLineWidth(0);
503 return m_pDevice->DrawPathWithBlend(
504 pPathObj->m_Path.GetObject(), &path_matrix, graphState.GetObject(),
505 fill_argb, stroke_argb, FillType, m_curBlend);
506 }
507
508 CPDF_TransferFunc* CPDF_RenderStatus::GetTransferFunc(CPDF_Object* pObj) const {
509 ASSERT(pObj);
510 CPDF_DocRenderData* pDocCache = m_pContext->GetDocument()->GetRenderData();
511 return pDocCache ? pDocCache->GetTransferFunc(pObj) : nullptr;
512 }
513
514 FX_ARGB CPDF_RenderStatus::GetFillArgb(CPDF_PageObject* pObj,
515 FX_BOOL bType3) const {
516 const CPDF_ColorState* pColorState = &pObj->m_ColorState;
517 if (m_pType3Char && !bType3 &&
518 (!m_pType3Char->m_bColored ||
519 (m_pType3Char->m_bColored &&
520 (!*pColorState || pColorState->GetFillColor()->IsNull())))) {
521 return m_T3FillColor;
522 }
523 if (!*pColorState || pColorState->GetFillColor()->IsNull())
524 pColorState = &m_InitialStates.m_ColorState;
525
526 FX_COLORREF rgb = pColorState->GetFillRGB();
527 if (rgb == (uint32_t)-1)
528 return 0;
529
530 int32_t alpha =
531 static_cast<int32_t>((pObj->m_GeneralState.GetFillAlpha() * 255));
532 if (pObj->m_GeneralState.GetTR()) {
533 if (!pObj->m_GeneralState.GetTransferFunc()) {
534 pObj->m_GeneralState.SetTransferFunc(
535 GetTransferFunc(pObj->m_GeneralState.GetTR()));
536 }
537 if (pObj->m_GeneralState.GetTransferFunc())
538 rgb = pObj->m_GeneralState.GetTransferFunc()->TranslateColor(rgb);
539 }
540 return m_Options.TranslateColor(ArgbEncode(alpha, rgb));
541 }
542
543 FX_ARGB CPDF_RenderStatus::GetStrokeArgb(CPDF_PageObject* pObj) const {
544 const CPDF_ColorState* pColorState = &pObj->m_ColorState;
545 if (m_pType3Char &&
546 (!m_pType3Char->m_bColored ||
547 (m_pType3Char->m_bColored &&
548 (!*pColorState || pColorState->GetStrokeColor()->IsNull())))) {
549 return m_T3FillColor;
550 }
551 if (!*pColorState || pColorState->GetStrokeColor()->IsNull())
552 pColorState = &m_InitialStates.m_ColorState;
553
554 FX_COLORREF rgb = pColorState->GetStrokeRGB();
555 if (rgb == (uint32_t)-1)
556 return 0;
557
558 int32_t alpha = static_cast<int32_t>(pObj->m_GeneralState.GetStrokeAlpha() *
559 255); // not rounded.
560 if (pObj->m_GeneralState.GetTR()) {
561 if (!pObj->m_GeneralState.GetTransferFunc()) {
562 pObj->m_GeneralState.SetTransferFunc(
563 GetTransferFunc(pObj->m_GeneralState.GetTR()));
564 }
565 if (pObj->m_GeneralState.GetTransferFunc())
566 rgb = pObj->m_GeneralState.GetTransferFunc()->TranslateColor(rgb);
567 }
568 return m_Options.TranslateColor(ArgbEncode(alpha, rgb));
569 }
570 void CPDF_RenderStatus::ProcessClipPath(CPDF_ClipPath ClipPath,
571 const CFX_Matrix* pObj2Device) {
572 if (!ClipPath) {
573 if (m_LastClipPath) {
574 m_pDevice->RestoreState(true);
575 m_LastClipPath.SetNull();
576 }
577 return;
578 }
579 if (m_LastClipPath == ClipPath)
580 return;
581
582 m_LastClipPath = ClipPath;
583 m_pDevice->RestoreState(true);
584 int nClipPath = ClipPath.GetPathCount();
585 for (int i = 0; i < nClipPath; ++i) {
586 const CFX_PathData* pPathData = ClipPath.GetPath(i).GetObject();
587 if (!pPathData)
588 continue;
589
590 if (pPathData->GetPointCount() == 0) {
591 CFX_PathData EmptyPath;
592 EmptyPath.AppendRect(-1, -1, 0, 0);
593 int fill_mode = FXFILL_WINDING;
594 m_pDevice->SetClip_PathFill(&EmptyPath, nullptr, fill_mode);
595 } else {
596 int ClipType = ClipPath.GetClipType(i);
597 m_pDevice->SetClip_PathFill(pPathData, pObj2Device, ClipType);
598 }
599 }
600 int textcount = ClipPath.GetTextCount();
601 if (textcount == 0)
602 return;
603
604 if (m_pDevice->GetDeviceClass() == FXDC_DISPLAY &&
605 !(m_pDevice->GetDeviceCaps(FXDC_RENDER_CAPS) & FXRC_SOFT_CLIP)) {
606 return;
607 }
608
609 std::unique_ptr<CFX_PathData> pTextClippingPath;
610 for (int i = 0; i < textcount; ++i) {
611 CPDF_TextObject* pText = ClipPath.GetText(i);
612 if (pText) {
613 if (!pTextClippingPath)
614 pTextClippingPath.reset(new CFX_PathData);
615 ProcessText(pText, pObj2Device, pTextClippingPath.get());
616 continue;
617 }
618
619 if (!pTextClippingPath)
620 continue;
621
622 int fill_mode = FXFILL_WINDING;
623 if (m_Options.m_Flags & RENDER_NOTEXTSMOOTH)
624 fill_mode |= FXFILL_NOPATHSMOOTH;
625 m_pDevice->SetClip_PathFill(pTextClippingPath.get(), nullptr, fill_mode);
626 pTextClippingPath.reset();
627 }
628 }
629
630 void CPDF_RenderStatus::DrawClipPath(CPDF_ClipPath ClipPath,
631 const CFX_Matrix* pObj2Device) {
632 if (!ClipPath)
633 return;
634
635 int fill_mode = 0;
636 if (m_Options.m_Flags & RENDER_NOPATHSMOOTH) {
637 fill_mode |= FXFILL_NOPATHSMOOTH;
638 }
639 int nClipPath = ClipPath.GetPathCount();
640 int i;
641 for (i = 0; i < nClipPath; i++) {
642 const CFX_PathData* pPathData = ClipPath.GetPath(i).GetObject();
643 if (!pPathData) {
644 continue;
645 }
646 CFX_GraphStateData stroke_state;
647 if (m_Options.m_Flags & RENDER_THINLINE) {
648 stroke_state.m_LineWidth = 0;
649 }
650 m_pDevice->DrawPath(pPathData, pObj2Device, &stroke_state, 0, 0xffff0000,
651 fill_mode);
652 }
653 }
654 FX_BOOL CPDF_RenderStatus::SelectClipPath(const CPDF_PathObject* pPathObj,
655 const CFX_Matrix* pObj2Device,
656 FX_BOOL bStroke) {
657 CFX_Matrix path_matrix = pPathObj->m_Matrix;
658 path_matrix.Concat(*pObj2Device);
659 if (bStroke) {
660 CFX_GraphState graphState = pPathObj->m_GraphState;
661 if (m_Options.m_Flags & RENDER_THINLINE)
662 graphState.SetLineWidth(0);
663 return m_pDevice->SetClip_PathStroke(pPathObj->m_Path.GetObject(),
664 &path_matrix, graphState.GetObject());
665 }
666 int fill_mode = pPathObj->m_FillType;
667 if (m_Options.m_Flags & RENDER_NOPATHSMOOTH) {
668 fill_mode |= FXFILL_NOPATHSMOOTH;
669 }
670 return m_pDevice->SetClip_PathFill(pPathObj->m_Path.GetObject(), &path_matrix,
671 fill_mode);
672 }
673 FX_BOOL CPDF_RenderStatus::ProcessTransparency(CPDF_PageObject* pPageObj,
674 const CFX_Matrix* pObj2Device) {
675 #if defined _SKIA_SUPPORT_
676 DebugVerifyDeviceIsPreMultiplied();
677 #endif
678 int blend_type = pPageObj->m_GeneralState.GetBlendType();
679 if (blend_type == FXDIB_BLEND_UNSUPPORTED)
680 return TRUE;
681
682 CPDF_Dictionary* pSMaskDict =
683 ToDictionary(pPageObj->m_GeneralState.GetSoftMask());
684 if (pSMaskDict) {
685 if (pPageObj->IsImage() &&
686 pPageObj->AsImage()->GetImage()->GetDict()->KeyExist("SMask")) {
687 pSMaskDict = nullptr;
688 }
689 }
690 CPDF_Dictionary* pFormResource = nullptr;
691 FX_FLOAT group_alpha = 1.0f;
692 int Transparency = m_Transparency;
693 FX_BOOL bGroupTransparent = FALSE;
694 if (pPageObj->IsForm()) {
695 const CPDF_FormObject* pFormObj = pPageObj->AsForm();
696 group_alpha = pFormObj->m_GeneralState.GetFillAlpha();
697 Transparency = pFormObj->m_pForm->m_Transparency;
698 bGroupTransparent = !!(Transparency & PDFTRANS_ISOLATED);
699 if (pFormObj->m_pForm->m_pFormDict) {
700 pFormResource = pFormObj->m_pForm->m_pFormDict->GetDictFor("Resources");
701 }
702 }
703 bool bTextClip =
704 (pPageObj->m_ClipPath && pPageObj->m_ClipPath.GetTextCount() &&
705 m_pDevice->GetDeviceClass() == FXDC_DISPLAY &&
706 !(m_pDevice->GetDeviceCaps(FXDC_RENDER_CAPS) & FXRC_SOFT_CLIP));
707 if ((m_Options.m_Flags & RENDER_OVERPRINT) && pPageObj->IsImage() &&
708 pPageObj->m_GeneralState.GetFillOP() &&
709 pPageObj->m_GeneralState.GetStrokeOP()) {
710 CPDF_Document* pDocument = nullptr;
711 CPDF_Page* pPage = nullptr;
712 if (m_pContext->GetPageCache()) {
713 pPage = m_pContext->GetPageCache()->GetPage();
714 pDocument = pPage->m_pDocument;
715 } else {
716 pDocument = pPageObj->AsImage()->GetImage()->GetDocument();
717 }
718 CPDF_Dictionary* pPageResources = pPage ? pPage->m_pPageResources : nullptr;
719 CPDF_Object* pCSObj = pPageObj->AsImage()
720 ->GetImage()
721 ->GetStream()
722 ->GetDict()
723 ->GetDirectObjectFor("ColorSpace");
724 CPDF_ColorSpace* pColorSpace =
725 pDocument->LoadColorSpace(pCSObj, pPageResources);
726 if (pColorSpace) {
727 int format = pColorSpace->GetFamily();
728 if (format == PDFCS_DEVICECMYK || format == PDFCS_SEPARATION ||
729 format == PDFCS_DEVICEN) {
730 blend_type = FXDIB_BLEND_DARKEN;
731 }
732 pDocument->GetPageData()->ReleaseColorSpace(pCSObj);
733 }
734 }
735 if (!pSMaskDict && group_alpha == 1.0f && blend_type == FXDIB_BLEND_NORMAL &&
736 !bTextClip && !bGroupTransparent) {
737 return FALSE;
738 }
739 bool isolated = !!(Transparency & PDFTRANS_ISOLATED);
740 if (m_bPrint) {
741 FX_BOOL bRet = FALSE;
742 int rendCaps = m_pDevice->GetRenderCaps();
743 if (!((Transparency & PDFTRANS_ISOLATED) || pSMaskDict || bTextClip) &&
744 (rendCaps & FXRC_BLEND_MODE)) {
745 int oldBlend = m_curBlend;
746 m_curBlend = blend_type;
747 bRet = DrawObjWithBlend(pPageObj, pObj2Device);
748 m_curBlend = oldBlend;
749 }
750 if (!bRet) {
751 DrawObjWithBackground(pPageObj, pObj2Device);
752 }
753 return TRUE;
754 }
755 FX_RECT rect = pPageObj->GetBBox(pObj2Device);
756 rect.Intersect(m_pDevice->GetClipBox());
757 if (rect.IsEmpty()) {
758 return TRUE;
759 }
760 CFX_Matrix deviceCTM = m_pDevice->GetCTM();
761 FX_FLOAT scaleX = FXSYS_fabs(deviceCTM.a);
762 FX_FLOAT scaleY = FXSYS_fabs(deviceCTM.d);
763 int width = FXSYS_round((FX_FLOAT)rect.Width() * scaleX);
764 int height = FXSYS_round((FX_FLOAT)rect.Height() * scaleY);
765 CFX_FxgeDevice bitmap_device;
766 std::unique_ptr<CFX_DIBitmap> oriDevice;
767 if (!isolated && (m_pDevice->GetRenderCaps() & FXRC_GET_BITS)) {
768 oriDevice.reset(new CFX_DIBitmap);
769 if (!m_pDevice->CreateCompatibleBitmap(oriDevice.get(), width, height))
770 return TRUE;
771 m_pDevice->GetDIBits(oriDevice.get(), rect.left, rect.top);
772 }
773 if (!bitmap_device.Create(width, height, FXDIB_Argb, oriDevice.get()))
774 return TRUE;
775 CFX_DIBitmap* bitmap = bitmap_device.GetBitmap();
776 bitmap->Clear(0);
777 CFX_Matrix new_matrix = *pObj2Device;
778 new_matrix.TranslateI(-rect.left, -rect.top);
779 new_matrix.Scale(scaleX, scaleY);
780 std::unique_ptr<CFX_DIBitmap> pTextMask;
781 if (bTextClip) {
782 pTextMask.reset(new CFX_DIBitmap);
783 if (!pTextMask->Create(width, height, FXDIB_8bppMask))
784 return TRUE;
785
786 pTextMask->Clear(0);
787 CFX_FxgeDevice text_device;
788 text_device.Attach(pTextMask.get(), false, nullptr, false);
789 for (uint32_t i = 0; i < pPageObj->m_ClipPath.GetTextCount(); i++) {
790 CPDF_TextObject* textobj = pPageObj->m_ClipPath.GetText(i);
791 if (!textobj) {
792 break;
793 }
794 CFX_Matrix text_matrix;
795 textobj->GetTextMatrix(&text_matrix);
796 CPDF_TextRenderer::DrawTextPath(
797 &text_device, textobj->m_nChars, textobj->m_pCharCodes,
798 textobj->m_pCharPos, textobj->m_TextState.GetFont(),
799 textobj->m_TextState.GetFontSize(), &text_matrix, &new_matrix,
800 textobj->m_GraphState.GetObject(), (FX_ARGB)-1, 0, nullptr, 0);
801 }
802 }
803 CPDF_RenderStatus bitmap_render;
804 bitmap_render.Initialize(m_pContext, &bitmap_device, nullptr, m_pStopObj,
805 nullptr, nullptr, &m_Options, 0, m_bDropObjects,
806 pFormResource, TRUE);
807 bitmap_render.ProcessObjectNoClip(pPageObj, &new_matrix);
808 m_bStopped = bitmap_render.m_bStopped;
809 if (pSMaskDict) {
810 CFX_Matrix smask_matrix = *pPageObj->m_GeneralState.GetSMaskMatrix();
811 smask_matrix.Concat(*pObj2Device);
812 std::unique_ptr<CFX_DIBSource> pSMaskSource(
813 LoadSMask(pSMaskDict, &rect, &smask_matrix));
814 if (pSMaskSource)
815 bitmap->MultiplyAlpha(pSMaskSource.get());
816 }
817 if (pTextMask) {
818 bitmap->MultiplyAlpha(pTextMask.get());
819 pTextMask.reset();
820 }
821 int32_t blitAlpha = 255;
822 if (Transparency & PDFTRANS_GROUP && group_alpha != 1.0f) {
823 blitAlpha = (int32_t)(group_alpha * 255);
824 #ifndef _SKIA_SUPPORT_
825 bitmap->MultiplyAlpha(blitAlpha);
826 blitAlpha = 255;
827 #endif
828 }
829 Transparency = m_Transparency;
830 if (pPageObj->IsForm()) {
831 Transparency |= PDFTRANS_GROUP;
832 }
833 CompositeDIBitmap(bitmap, rect.left, rect.top, 0, blitAlpha, blend_type,
834 Transparency);
835 #if defined _SKIA_SUPPORT_
836 DebugVerifyDeviceIsPreMultiplied();
837 #endif
838 return TRUE;
839 }
840
841 CFX_DIBitmap* CPDF_RenderStatus::GetBackdrop(const CPDF_PageObject* pObj,
842 const FX_RECT& rect,
843 int& left,
844 int& top,
845 FX_BOOL bBackAlphaRequired) {
846 FX_RECT bbox = rect;
847 bbox.Intersect(m_pDevice->GetClipBox());
848 left = bbox.left;
849 top = bbox.top;
850 CFX_Matrix deviceCTM = m_pDevice->GetCTM();
851 FX_FLOAT scaleX = FXSYS_fabs(deviceCTM.a);
852 FX_FLOAT scaleY = FXSYS_fabs(deviceCTM.d);
853 int width = FXSYS_round(bbox.Width() * scaleX);
854 int height = FXSYS_round(bbox.Height() * scaleY);
855 std::unique_ptr<CFX_DIBitmap> pBackdrop(new CFX_DIBitmap);
856 if (bBackAlphaRequired && !m_bDropObjects)
857 pBackdrop->Create(width, height, FXDIB_Argb);
858 else
859 m_pDevice->CreateCompatibleBitmap(pBackdrop.get(), width, height);
860
861 if (!pBackdrop->GetBuffer())
862 return nullptr;
863
864 FX_BOOL bNeedDraw;
865 if (pBackdrop->HasAlpha())
866 bNeedDraw = !(m_pDevice->GetRenderCaps() & FXRC_ALPHA_OUTPUT);
867 else
868 bNeedDraw = !(m_pDevice->GetRenderCaps() & FXRC_GET_BITS);
869
870 if (!bNeedDraw) {
871 m_pDevice->GetDIBits(pBackdrop.get(), left, top);
872 return pBackdrop.release();
873 }
874
875 CFX_Matrix FinalMatrix = m_DeviceMatrix;
876 FinalMatrix.TranslateI(-left, -top);
877 FinalMatrix.Scale(scaleX, scaleY);
878 pBackdrop->Clear(pBackdrop->HasAlpha() ? 0 : 0xffffffff);
879 CFX_FxgeDevice device;
880 device.Attach(pBackdrop.get(), false, nullptr, false);
881 m_pContext->Render(&device, pObj, &m_Options, &FinalMatrix);
882 return pBackdrop.release();
883 }
884
885 void CPDF_RenderContext::GetBackground(CFX_DIBitmap* pBuffer,
886 const CPDF_PageObject* pObj,
887 const CPDF_RenderOptions* pOptions,
888 CFX_Matrix* pFinalMatrix) {
889 CFX_FxgeDevice device;
890 device.Attach(pBuffer, false, nullptr, false);
891
892 FX_RECT rect(0, 0, device.GetWidth(), device.GetHeight());
893 device.FillRect(&rect, 0xffffffff);
894 Render(&device, pObj, pOptions, pFinalMatrix);
895 }
896 CPDF_GraphicStates* CPDF_RenderStatus::CloneObjStates(
897 const CPDF_GraphicStates* pSrcStates,
898 FX_BOOL bStroke) {
899 if (!pSrcStates)
900 return nullptr;
901
902 CPDF_GraphicStates* pStates = new CPDF_GraphicStates;
903 pStates->CopyStates(*pSrcStates);
904 const CPDF_Color* pObjColor = bStroke
905 ? pSrcStates->m_ColorState.GetStrokeColor()
906 : pSrcStates->m_ColorState.GetFillColor();
907 if (!pObjColor->IsNull()) {
908 pStates->m_ColorState.SetFillRGB(
909 bStroke ? pSrcStates->m_ColorState.GetStrokeRGB()
910 : pSrcStates->m_ColorState.GetFillRGB());
911 pStates->m_ColorState.SetStrokeRGB(pStates->m_ColorState.GetFillRGB());
912 }
913 return pStates;
914 }
915
916 CPDF_RenderContext::CPDF_RenderContext(CPDF_Page* pPage)
917 : m_pDocument(pPage->m_pDocument),
918 m_pPageResources(pPage->m_pPageResources),
919 m_pPageCache(pPage->GetRenderCache()) {}
920
921 CPDF_RenderContext::CPDF_RenderContext(CPDF_Document* pDoc,
922 CPDF_PageRenderCache* pPageCache)
923 : m_pDocument(pDoc), m_pPageResources(nullptr), m_pPageCache(pPageCache) {}
924
925 CPDF_RenderContext::~CPDF_RenderContext() {}
926
927 void CPDF_RenderContext::AppendLayer(CPDF_PageObjectHolder* pObjectHolder,
928 const CFX_Matrix* pObject2Device) {
929 Layer* pLayer = m_Layers.AddSpace();
930 pLayer->m_pObjectHolder = pObjectHolder;
931 if (pObject2Device) {
932 pLayer->m_Matrix = *pObject2Device;
933 } else {
934 pLayer->m_Matrix.SetIdentity();
935 }
936 }
937 void CPDF_RenderContext::Render(CFX_RenderDevice* pDevice,
938 const CPDF_RenderOptions* pOptions,
939 const CFX_Matrix* pLastMatrix) {
940 Render(pDevice, nullptr, pOptions, pLastMatrix);
941 }
942 void CPDF_RenderContext::Render(CFX_RenderDevice* pDevice,
943 const CPDF_PageObject* pStopObj,
944 const CPDF_RenderOptions* pOptions,
945 const CFX_Matrix* pLastMatrix) {
946 int count = m_Layers.GetSize();
947 for (int j = 0; j < count; j++) {
948 pDevice->SaveState();
949 Layer* pLayer = m_Layers.GetDataPtr(j);
950 if (pLastMatrix) {
951 CFX_Matrix FinalMatrix = pLayer->m_Matrix;
952 FinalMatrix.Concat(*pLastMatrix);
953 CPDF_RenderStatus status;
954 status.Initialize(this, pDevice, pLastMatrix, pStopObj, nullptr, nullptr,
955 pOptions, pLayer->m_pObjectHolder->m_Transparency,
956 FALSE, nullptr);
957 status.RenderObjectList(pLayer->m_pObjectHolder, &FinalMatrix);
958 if (status.m_Options.m_Flags & RENDER_LIMITEDIMAGECACHE) {
959 m_pPageCache->CacheOptimization(status.m_Options.m_dwLimitCacheSize);
960 }
961 if (status.m_bStopped) {
962 pDevice->RestoreState(false);
963 break;
964 }
965 } else {
966 CPDF_RenderStatus status;
967 status.Initialize(this, pDevice, nullptr, pStopObj, nullptr, nullptr,
968 pOptions, pLayer->m_pObjectHolder->m_Transparency,
969 FALSE, nullptr);
970 status.RenderObjectList(pLayer->m_pObjectHolder, &pLayer->m_Matrix);
971 if (status.m_Options.m_Flags & RENDER_LIMITEDIMAGECACHE) {
972 m_pPageCache->CacheOptimization(status.m_Options.m_dwLimitCacheSize);
973 }
974 if (status.m_bStopped) {
975 pDevice->RestoreState(false);
976 break;
977 }
978 }
979 pDevice->RestoreState(false);
980 }
981 }
982
983 CPDF_ProgressiveRenderer::CPDF_ProgressiveRenderer(
984 CPDF_RenderContext* pContext,
985 CFX_RenderDevice* pDevice,
986 const CPDF_RenderOptions* pOptions)
987 : m_Status(Ready),
988 m_pContext(pContext),
989 m_pDevice(pDevice),
990 m_pOptions(pOptions),
991 m_LayerIndex(0),
992 m_pCurrentLayer(nullptr) {}
993
994 CPDF_ProgressiveRenderer::~CPDF_ProgressiveRenderer() {
995 if (m_pRenderStatus)
996 m_pDevice->RestoreState(false);
997 }
998
999 void CPDF_ProgressiveRenderer::Start(IFX_Pause* pPause) {
1000 if (!m_pContext || !m_pDevice || m_Status != Ready) {
1001 m_Status = Failed;
1002 return;
1003 }
1004 m_Status = ToBeContinued;
1005 Continue(pPause);
1006 }
1007
1008 void CPDF_ProgressiveRenderer::Continue(IFX_Pause* pPause) {
1009 while (m_Status == ToBeContinued) {
1010 if (!m_pCurrentLayer) {
1011 if (m_LayerIndex >= m_pContext->CountLayers()) {
1012 m_Status = Done;
1013 return;
1014 }
1015 m_pCurrentLayer = m_pContext->GetLayer(m_LayerIndex);
1016 m_LastObjectRendered =
1017 m_pCurrentLayer->m_pObjectHolder->GetPageObjectList()->end();
1018 m_pRenderStatus.reset(new CPDF_RenderStatus());
1019 m_pRenderStatus->Initialize(
1020 m_pContext, m_pDevice, nullptr, nullptr, nullptr, nullptr, m_pOptions,
1021 m_pCurrentLayer->m_pObjectHolder->m_Transparency, FALSE, nullptr);
1022 m_pDevice->SaveState();
1023 m_ClipRect = CFX_FloatRect(m_pDevice->GetClipBox());
1024 CFX_Matrix device2object;
1025 device2object.SetReverse(m_pCurrentLayer->m_Matrix);
1026 device2object.TransformRect(m_ClipRect);
1027 }
1028 CPDF_PageObjectList::iterator iter;
1029 CPDF_PageObjectList::iterator iterEnd =
1030 m_pCurrentLayer->m_pObjectHolder->GetPageObjectList()->end();
1031 if (m_LastObjectRendered != iterEnd) {
1032 iter = m_LastObjectRendered;
1033 ++iter;
1034 } else {
1035 iter = m_pCurrentLayer->m_pObjectHolder->GetPageObjectList()->begin();
1036 }
1037 int nObjsToGo = kStepLimit;
1038 while (iter != iterEnd) {
1039 CPDF_PageObject* pCurObj = iter->get();
1040 if (pCurObj && pCurObj->m_Left <= m_ClipRect.right &&
1041 pCurObj->m_Right >= m_ClipRect.left &&
1042 pCurObj->m_Bottom <= m_ClipRect.top &&
1043 pCurObj->m_Top >= m_ClipRect.bottom) {
1044 if (m_pRenderStatus->ContinueSingleObject(
1045 pCurObj, &m_pCurrentLayer->m_Matrix, pPause)) {
1046 return;
1047 }
1048 if (pCurObj->IsImage() &&
1049 m_pRenderStatus->m_Options.m_Flags & RENDER_LIMITEDIMAGECACHE) {
1050 m_pContext->GetPageCache()->CacheOptimization(
1051 m_pRenderStatus->m_Options.m_dwLimitCacheSize);
1052 }
1053 if (pCurObj->IsForm() || pCurObj->IsShading()) {
1054 nObjsToGo = 0;
1055 } else {
1056 --nObjsToGo;
1057 }
1058 }
1059 m_LastObjectRendered = iter;
1060 if (nObjsToGo == 0) {
1061 if (pPause && pPause->NeedToPauseNow())
1062 return;
1063 nObjsToGo = kStepLimit;
1064 }
1065 ++iter;
1066 }
1067 if (m_pCurrentLayer->m_pObjectHolder->IsParsed()) {
1068 m_pRenderStatus.reset();
1069 m_pDevice->RestoreState(false);
1070 m_pCurrentLayer = nullptr;
1071 m_LayerIndex++;
1072 if (pPause && pPause->NeedToPauseNow()) {
1073 return;
1074 }
1075 } else {
1076 m_pCurrentLayer->m_pObjectHolder->ContinueParse(pPause);
1077 if (!m_pCurrentLayer->m_pObjectHolder->IsParsed())
1078 return;
1079 }
1080 }
1081 }
1082
1083 CPDF_TransferFunc* CPDF_DocRenderData::GetTransferFunc(CPDF_Object* pObj) {
1084 if (!pObj)
1085 return nullptr;
1086
1087 auto it = m_TransferFuncMap.find(pObj);
1088 if (it != m_TransferFuncMap.end()) {
1089 CPDF_CountedObject<CPDF_TransferFunc>* pTransferCounter = it->second;
1090 return pTransferCounter->AddRef();
1091 }
1092
1093 std::unique_ptr<CPDF_Function> pFuncs[3];
1094 FX_BOOL bUniTransfer = TRUE;
1095 FX_BOOL bIdentity = TRUE;
1096 if (CPDF_Array* pArray = pObj->AsArray()) {
1097 bUniTransfer = FALSE;
1098 if (pArray->GetCount() < 3)
1099 return nullptr;
1100
1101 for (uint32_t i = 0; i < 3; ++i) {
1102 pFuncs[2 - i] = CPDF_Function::Load(pArray->GetDirectObjectAt(i));
1103 if (!pFuncs[2 - i])
1104 return nullptr;
1105 }
1106 } else {
1107 pFuncs[0] = CPDF_Function::Load(pObj);
1108 if (!pFuncs[0])
1109 return nullptr;
1110 }
1111 CPDF_TransferFunc* pTransfer = new CPDF_TransferFunc(m_pPDFDoc);
1112 CPDF_CountedObject<CPDF_TransferFunc>* pTransferCounter =
1113 new CPDF_CountedObject<CPDF_TransferFunc>(pTransfer);
1114 m_TransferFuncMap[pObj] = pTransferCounter;
1115 static const int kMaxOutputs = 16;
1116 FX_FLOAT output[kMaxOutputs];
1117 FXSYS_memset(output, 0, sizeof(output));
1118 FX_FLOAT input;
1119 int noutput;
1120 for (int v = 0; v < 256; ++v) {
1121 input = (FX_FLOAT)v / 255.0f;
1122 if (bUniTransfer) {
1123 if (pFuncs[0] && pFuncs[0]->CountOutputs() <= kMaxOutputs)
1124 pFuncs[0]->Call(&input, 1, output, noutput);
1125 int o = FXSYS_round(output[0] * 255);
1126 if (o != v)
1127 bIdentity = FALSE;
1128 for (int i = 0; i < 3; ++i) {
1129 pTransfer->m_Samples[i * 256 + v] = o;
1130 }
1131 } else {
1132 for (int i = 0; i < 3; ++i) {
1133 if (pFuncs[i] && pFuncs[i]->CountOutputs() <= kMaxOutputs) {
1134 pFuncs[i]->Call(&input, 1, output, noutput);
1135 int o = FXSYS_round(output[0] * 255);
1136 if (o != v)
1137 bIdentity = FALSE;
1138 pTransfer->m_Samples[i * 256 + v] = o;
1139 } else {
1140 pTransfer->m_Samples[i * 256 + v] = v;
1141 }
1142 }
1143 }
1144 }
1145
1146 pTransfer->m_bIdentity = bIdentity;
1147 return pTransferCounter->AddRef();
1148 }
1149
1150 void CPDF_DocRenderData::ReleaseTransferFunc(CPDF_Object* pObj) {
1151 auto it = m_TransferFuncMap.find(pObj);
1152 if (it != m_TransferFuncMap.end())
1153 it->second->RemoveRef();
1154 }
1155
1156 CPDF_DeviceBuffer::CPDF_DeviceBuffer()
1157 : m_pDevice(nullptr), m_pContext(nullptr), m_pObject(nullptr) {}
1158
1159 CPDF_DeviceBuffer::~CPDF_DeviceBuffer() {}
1160
1161 FX_BOOL CPDF_DeviceBuffer::Initialize(CPDF_RenderContext* pContext,
1162 CFX_RenderDevice* pDevice,
1163 FX_RECT* pRect,
1164 const CPDF_PageObject* pObj,
1165 int max_dpi) {
1166 m_pDevice = pDevice;
1167 m_pContext = pContext;
1168 m_Rect = *pRect;
1169 m_pObject = pObj;
1170 m_Matrix.TranslateI(-pRect->left, -pRect->top);
1171 #if _FXM_PLATFORM_ != _FXM_PLATFORM_APPLE_
1172 int horz_size = pDevice->GetDeviceCaps(FXDC_HORZ_SIZE);
1173 int vert_size = pDevice->GetDeviceCaps(FXDC_VERT_SIZE);
1174 if (horz_size && vert_size && max_dpi) {
1175 int dpih =
1176 pDevice->GetDeviceCaps(FXDC_PIXEL_WIDTH) * 254 / (horz_size * 10);
1177 int dpiv =
1178 pDevice->GetDeviceCaps(FXDC_PIXEL_HEIGHT) * 254 / (vert_size * 10);
1179 if (dpih > max_dpi) {
1180 m_Matrix.Scale((FX_FLOAT)(max_dpi) / dpih, 1.0f);
1181 }
1182 if (dpiv > max_dpi) {
1183 m_Matrix.Scale(1.0f, (FX_FLOAT)(max_dpi) / (FX_FLOAT)dpiv);
1184 }
1185 }
1186 #endif
1187 CFX_Matrix ctm = m_pDevice->GetCTM();
1188 FX_FLOAT fScaleX = FXSYS_fabs(ctm.a);
1189 FX_FLOAT fScaleY = FXSYS_fabs(ctm.d);
1190 m_Matrix.Concat(fScaleX, 0, 0, fScaleY, 0, 0);
1191 CFX_FloatRect rect(*pRect);
1192 m_Matrix.TransformRect(rect);
1193 FX_RECT bitmap_rect = rect.GetOuterRect();
1194 m_pBitmap.reset(new CFX_DIBitmap);
1195 m_pBitmap->Create(bitmap_rect.Width(), bitmap_rect.Height(), FXDIB_Argb);
1196 return TRUE;
1197 }
1198 void CPDF_DeviceBuffer::OutputToDevice() {
1199 if (m_pDevice->GetDeviceCaps(FXDC_RENDER_CAPS) & FXRC_GET_BITS) {
1200 if (m_Matrix.a == 1.0f && m_Matrix.d == 1.0f) {
1201 m_pDevice->SetDIBits(m_pBitmap.get(), m_Rect.left, m_Rect.top);
1202 } else {
1203 m_pDevice->StretchDIBits(m_pBitmap.get(), m_Rect.left, m_Rect.top,
1204 m_Rect.Width(), m_Rect.Height());
1205 }
1206 } else {
1207 CFX_DIBitmap buffer;
1208 m_pDevice->CreateCompatibleBitmap(&buffer, m_pBitmap->GetWidth(),
1209 m_pBitmap->GetHeight());
1210 m_pContext->GetBackground(&buffer, m_pObject, nullptr, &m_Matrix);
1211 buffer.CompositeBitmap(0, 0, buffer.GetWidth(), buffer.GetHeight(),
1212 m_pBitmap.get(), 0, 0);
1213 m_pDevice->StretchDIBits(&buffer, m_Rect.left, m_Rect.top, m_Rect.Width(),
1214 m_Rect.Height());
1215 }
1216 }
1217
1218 CPDF_ScaledRenderBuffer::CPDF_ScaledRenderBuffer() {}
1219
1220 CPDF_ScaledRenderBuffer::~CPDF_ScaledRenderBuffer() {}
1221
1222 #define _FPDFAPI_IMAGESIZE_LIMIT_ (30 * 1024 * 1024)
1223 FX_BOOL CPDF_ScaledRenderBuffer::Initialize(CPDF_RenderContext* pContext,
1224 CFX_RenderDevice* pDevice,
1225 const FX_RECT& pRect,
1226 const CPDF_PageObject* pObj,
1227 const CPDF_RenderOptions* pOptions,
1228 int max_dpi) {
1229 m_pDevice = pDevice;
1230 if (m_pDevice->GetDeviceCaps(FXDC_RENDER_CAPS) & FXRC_GET_BITS) {
1231 return TRUE;
1232 }
1233 m_pContext = pContext;
1234 m_Rect = pRect;
1235 m_pObject = pObj;
1236 m_Matrix.TranslateI(-pRect.left, -pRect.top);
1237 int horz_size = pDevice->GetDeviceCaps(FXDC_HORZ_SIZE);
1238 int vert_size = pDevice->GetDeviceCaps(FXDC_VERT_SIZE);
1239 if (horz_size && vert_size && max_dpi) {
1240 int dpih =
1241 pDevice->GetDeviceCaps(FXDC_PIXEL_WIDTH) * 254 / (horz_size * 10);
1242 int dpiv =
1243 pDevice->GetDeviceCaps(FXDC_PIXEL_HEIGHT) * 254 / (vert_size * 10);
1244 if (dpih > max_dpi) {
1245 m_Matrix.Scale((FX_FLOAT)(max_dpi) / dpih, 1.0f);
1246 }
1247 if (dpiv > max_dpi) {
1248 m_Matrix.Scale(1.0f, (FX_FLOAT)(max_dpi) / (FX_FLOAT)dpiv);
1249 }
1250 }
1251 m_pBitmapDevice.reset(new CFX_FxgeDevice);
1252 FXDIB_Format dibFormat = FXDIB_Rgb;
1253 int32_t bpp = 24;
1254 if (m_pDevice->GetDeviceCaps(FXDC_RENDER_CAPS) & FXRC_ALPHA_OUTPUT) {
1255 dibFormat = FXDIB_Argb;
1256 bpp = 32;
1257 }
1258 while (1) {
1259 CFX_FloatRect rect(pRect);
1260 m_Matrix.TransformRect(rect);
1261 FX_RECT bitmap_rect = rect.GetOuterRect();
1262 int32_t iWidth = bitmap_rect.Width();
1263 int32_t iHeight = bitmap_rect.Height();
1264 int32_t iPitch = (iWidth * bpp + 31) / 32 * 4;
1265 if (iWidth * iHeight < 1)
1266 return FALSE;
1267
1268 if (iPitch * iHeight <= _FPDFAPI_IMAGESIZE_LIMIT_ &&
1269 m_pBitmapDevice->Create(iWidth, iHeight, dibFormat, nullptr)) {
1270 break;
1271 }
1272 m_Matrix.Scale(0.5f, 0.5f);
1273 }
1274 m_pContext->GetBackground(m_pBitmapDevice->GetBitmap(), m_pObject, pOptions,
1275 &m_Matrix);
1276 return TRUE;
1277 }
1278 void CPDF_ScaledRenderBuffer::OutputToDevice() {
1279 if (m_pBitmapDevice) {
1280 m_pDevice->StretchDIBits(m_pBitmapDevice->GetBitmap(), m_Rect.left,
1281 m_Rect.top, m_Rect.Width(), m_Rect.Height());
1282 }
1283 }
1284
1285 #if defined _SKIA_SUPPORT_
1286 void CPDF_RenderStatus::DebugVerifyDeviceIsPreMultiplied() const {
1287 m_pDevice->DebugVerifyBitmapIsPreMultiplied();
1288 }
1289 #endif
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