63d4fbdcdeb94828fedb959c9d9a2e0f284f1ccd
[pdfium.git] / fpdfsdk / src / fpdfview.cpp
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 "../include/fsdk_define.h"
8 #include "../include/fpdfview.h"
9 #include "../include/fsdk_rendercontext.h"
10 #include "../include/fpdf_progressive.h"
11 #include "../include/fpdf_ext.h"
12 #include "../../third_party/numerics/safe_conversions_impl.h"
13
14 CPDF_CustomAccess::CPDF_CustomAccess(FPDF_FILEACCESS* pFileAccess)
15 {
16         m_FileAccess = *pFileAccess;
17         m_BufferOffset = (FX_DWORD)-1;
18 }
19
20 FX_BOOL CPDF_CustomAccess::GetByte(FX_DWORD pos, FX_BYTE& ch)
21 {
22         if (pos >= m_FileAccess.m_FileLen) return FALSE;
23         if (m_BufferOffset == (FX_DWORD)-1 || pos < m_BufferOffset || pos >= m_BufferOffset + 512) {
24                 // Need to read from file access
25                 m_BufferOffset = pos;
26                 int size = 512;
27                 if (pos + 512 > m_FileAccess.m_FileLen)
28                         size = m_FileAccess.m_FileLen - pos;
29                 if (!m_FileAccess.m_GetBlock(m_FileAccess.m_Param, m_BufferOffset, m_Buffer, size))
30                         return FALSE;
31         }
32         ch = m_Buffer[pos - m_BufferOffset];
33         return TRUE;
34 }
35
36 FX_BOOL CPDF_CustomAccess::GetBlock(FX_DWORD pos, FX_LPBYTE pBuf, FX_DWORD size)
37 {
38         FX_SAFE_DWORD newPos = size;
39         newPos += pos;
40         if (!newPos.IsValid() || newPos.ValueOrDie() >= m_FileAccess.m_FileLen) {
41             return FALSE;
42         }
43
44         return m_FileAccess.m_GetBlock(m_FileAccess.m_Param, pos, pBuf, size);
45 }
46
47 FX_BOOL CPDF_CustomAccess::ReadBlock(void* buffer, FX_FILESIZE offset, size_t size)
48 {
49         if (offset < 0) {
50             return FALSE;
51         }
52         FX_SAFE_FILESIZE newPos = base::checked_cast<FX_FILESIZE, size_t>(size);
53         newPos += offset;
54         if (!newPos.IsValid() || newPos.ValueOrDie() >= m_FileAccess.m_FileLen) {
55             return FALSE;
56         }
57
58         return m_FileAccess.m_GetBlock(m_FileAccess.m_Param, offset,(FX_LPBYTE) buffer, size);
59 }
60
61 //0 bit: FPDF_POLICY_MACHINETIME_ACCESS
62 static FX_DWORD foxit_sandbox_policy = 0xFFFFFFFF;
63
64 void FSDK_SetSandBoxPolicy(FPDF_DWORD policy, FPDF_BOOL enable)
65 {
66         switch(policy)
67         {
68         case FPDF_POLICY_MACHINETIME_ACCESS:
69                 {
70                         if(enable)
71                                 foxit_sandbox_policy |= 0x01;
72                         else
73                                 foxit_sandbox_policy &= 0xFFFFFFFE;
74                 }
75                 break;
76         default:
77                 break;
78         }
79 }
80
81 FPDF_BOOL FSDK_IsSandBoxPolicyEnabled(FPDF_DWORD policy)
82 {
83         switch(policy)
84         {
85         case FPDF_POLICY_MACHINETIME_ACCESS:
86                 {
87                         if(foxit_sandbox_policy&0x01)
88                                 return TRUE;
89                         else
90                                 return FALSE;
91                 }
92                 break;
93         default:
94                 break;
95         }
96         return FALSE;
97 }
98
99
100 #ifndef _T
101 #define _T(x) x
102 #endif
103
104 #ifdef API5
105         CPDF_ModuleMgr* g_pModuleMgr = NULL;
106 #else
107         CCodec_ModuleMgr*       g_pCodecModule = NULL;
108 #endif
109
110 //extern CPDFSDK_FormFillApp* g_pFormFillApp;
111
112 #if _FX_OS_ == _FX_LINUX_EMBEDDED_
113 class CFontMapper : public IPDF_FontMapper
114 {
115 public:
116         CFontMapper();
117         virtual ~CFontMapper();
118
119         virtual FT_Face FindSubstFont(
120                                                         CPDF_Document* pDoc,                            // [IN] The PDF document
121                                                         const CFX_ByteString& face_name,        // [IN] Original name
122                                                         FX_BOOL bTrueType,                                      // [IN] TrueType or Type1
123                                                         FX_DWORD flags,                                         // [IN] PDF font flags (see PDF Reference section 5.7.1)
124                                                         int font_weight,                                        // [IN] original font weight. 0 for not specified
125                                                         int CharsetCP,                                          // [IN] code page for charset (see Win32 GetACP())
126                                                         FX_BOOL bVertical,
127                                                         CPDF_SubstFont* pSubstFont                      // [OUT] Subst font data
128                                                 );
129
130         FT_Face m_SysFace;
131 };
132
133 CFontMapper* g_pFontMapper = NULL;
134 #endif          // #if _FX_OS_ == _FX_LINUX_EMBEDDED_
135
136 DLLEXPORT void STDCALL FPDF_InitLibrary(FX_LPVOID hInstance)
137 {
138 #ifdef API5
139         CPDF_ModuleMgr::Create();
140         g_pModuleMgr = CPDF_ModuleMgr::Get();
141          #if _FX_OS_ == _FX_WIN32_MOBILE_ || _FX_OS_ == _FX_LINUX_EMBEDDED_
142                 g_pModuleMgr->InitEmbedded();
143          #ifdef _GB1_CMAPS_
144                 g_pModuleMgr->LoadEmbeddedGB1CMaps();
145          #endif
146          #ifdef _GB1_CMAPS_4_
147                 g_pModuleMgr->LoadEmbeddedGB1CMaps_4();
148          #endif
149          #ifdef _CNS1_CMAPS_
150                 g_pModuleMgr->LoadEmbeddedCNS1CMaps();
151          #endif
152          #ifdef _JAPAN1_CMAPS_
153                 g_pModuleMgr->LoadEmbeddedJapan1CMaps();
154          #endif
155          #ifdef _JAPAN1_CMAPS_6_
156                 g_pModuleMgr->LoadEmbeddedJapan1CMaps_6();
157          #endif
158          #ifdef _KOREA1_CMAPS_
159                 g_pModuleMgr->LoadEmbeddedKorea1CMaps();
160          #endif
161          #ifdef _JPX_DECODER_
162                 g_pModuleMgr->InitJpxModule();
163                 g_pModuleMgr->InitJbig2Module();
164          //     g_pModuleMgr->InitIccModule();
165          #endif
166          #else
167                 g_pModuleMgr->InitDesktop();
168          #endif
169 #else
170         g_pCodecModule = CCodec_ModuleMgr::Create();
171         
172         CFX_GEModule::Create();
173         CFX_GEModule::Get()->SetCodecModule(g_pCodecModule);
174         
175         CPDF_ModuleMgr::Create();
176         CPDF_ModuleMgr::Get()->SetCodecModule(g_pCodecModule);
177         CPDF_ModuleMgr::Get()->InitPageModule();
178         CPDF_ModuleMgr::Get()->InitRenderModule();
179 #ifdef FOXIT_CHROME_BUILD
180         CPDF_ModuleMgr * pModuleMgr = CPDF_ModuleMgr::Get();
181         if ( pModuleMgr )
182         {
183                 pModuleMgr->LoadEmbeddedGB1CMaps();
184                 pModuleMgr->LoadEmbeddedJapan1CMaps();
185                 pModuleMgr->LoadEmbeddedCNS1CMaps();
186                 pModuleMgr->LoadEmbeddedKorea1CMaps();
187         }
188 #endif 
189 #endif
190
191 #ifdef _WIN32
192         // Get module path
193         TCHAR app_path[MAX_PATH];
194         ::GetModuleFileName((HINSTANCE)hInstance, app_path, MAX_PATH);
195         size_t len = _tcslen(app_path);
196         for (size_t i = len; i >= 0; i --)
197                 if (app_path[i] == '\\') {
198                         app_path[i] = 0;
199                         break;
200                 }
201                 
202 #ifdef _UNICODE
203                 #ifndef _FXSDK_OPENSOURCE_
204                 CPDF_ModuleMgr::Get()->SetModulePath(NULL, CFX_ByteString::FromUnicode(app_path));
205                 #endif
206 #else
207 #ifndef _FXSDK_OPENSOURCE_
208                 CPDF_ModuleMgr::Get()->SetModulePath(NULL, app_path);
209 #endif
210 #endif
211 #endif
212 }
213
214
215 DLLEXPORT void STDCALL FPDF_DestroyLibrary()
216 {
217
218 #if _FX_OS_ == _FX_LINUX_EMBEDDED_
219         if (g_pFontMapper) delete g_pFontMapper;
220 #endif
221 #ifdef API5
222         g_pModuleMgr->Destroy();
223 #else
224         CPDF_ModuleMgr::Destroy();
225         CFX_GEModule::Destroy();
226         g_pCodecModule->Destroy();
227 #endif
228 #ifndef _FXSDK_OPENSOURCE_
229         FXMEM_CollectAll(FXMEM_GetDefaultMgr());
230 #else
231
232 #endif
233 }
234
235 #ifndef _WIN32
236 int g_LastError;
237 void SetLastError(int err)
238 {
239         g_LastError = err;
240 }
241
242 int GetLastError()
243 {
244         return g_LastError;
245 }
246 #endif
247
248 void ProcessParseError(FX_DWORD err_code)
249 {
250         // Translate FPDFAPI error code to FPDFVIEW error code
251         switch (err_code) {
252                 case PDFPARSE_ERROR_FILE:
253                         err_code = FPDF_ERR_FILE;
254                         break;
255                 case PDFPARSE_ERROR_FORMAT:
256                         err_code = FPDF_ERR_FORMAT;
257                         break;
258                 case PDFPARSE_ERROR_PASSWORD:
259                         err_code = FPDF_ERR_PASSWORD;
260                         break;
261                 case PDFPARSE_ERROR_HANDLER:
262                         err_code = FPDF_ERR_SECURITY;
263                         break;
264         }
265         SetLastError(err_code);
266 }
267
268 DLLEXPORT void  STDCALL FPDF_SetSandBoxPolicy(FPDF_DWORD policy, FPDF_BOOL enable)
269 {
270         return FSDK_SetSandBoxPolicy(policy, enable);
271 }
272
273 DLLEXPORT FPDF_DOCUMENT STDCALL FPDF_LoadDocument(FPDF_STRING file_path, FPDF_BYTESTRING password)
274 {
275         CPDF_Parser* pParser = FX_NEW CPDF_Parser;
276         pParser->SetPassword(password);
277         try {
278                 FX_DWORD err_code = pParser->StartParse((FX_LPCSTR)file_path);
279                 if (err_code) {
280                         delete pParser;
281                         ProcessParseError(err_code);
282                         return NULL;
283                 }
284         }
285         catch (...) {
286                 delete pParser;
287                 SetLastError(FPDF_ERR_UNKNOWN);
288                 return NULL;
289         }
290         return pParser->GetDocument();
291 }
292
293 extern void CheckUnSupportError(CPDF_Document * pDoc, FX_DWORD err_code);
294
295 class CMemFile FX_FINAL: public IFX_FileRead, public CFX_Object
296 {
297 public:
298         CMemFile(FX_BYTE* pBuf, FX_FILESIZE size):m_pBuf(pBuf),m_size(size) {}
299
300         virtual void                    Release() {delete this;}
301         virtual FX_FILESIZE             GetSize() {return m_size;}
302         virtual FX_BOOL                 ReadBlock(void* buffer, FX_FILESIZE offset, size_t size) 
303         {
304                 if (offset < 0) {
305                     return FALSE;
306                 }
307
308                 FX_SAFE_FILESIZE newPos = base::checked_cast<FX_FILESIZE, size_t>(size);
309                 newPos += offset;
310                 if (!newPos.IsValid() || newPos.ValueOrDie() >= (FX_DWORD)m_size) return FALSE;
311                 FXSYS_memcpy(buffer, m_pBuf+offset, size);
312
313                 return TRUE;
314         }
315 private:
316         FX_BYTE* m_pBuf;
317         FX_FILESIZE m_size;
318 };
319 DLLEXPORT FPDF_DOCUMENT STDCALL FPDF_LoadMemDocument(const void* data_buf, int size, FPDF_BYTESTRING password)
320 {
321         CPDF_Parser* pParser = FX_NEW CPDF_Parser;
322         pParser->SetPassword(password);
323         try {
324                 CMemFile* pMemFile = FX_NEW CMemFile((FX_BYTE*)data_buf, size);
325                 FX_DWORD err_code = pParser->StartParse(pMemFile);
326                 if (err_code) {
327                         delete pParser;
328                         ProcessParseError(err_code);
329                         return NULL;
330                 }
331                 CPDF_Document * pDoc = NULL;
332                 pDoc = pParser?pParser->GetDocument():NULL;
333                 CheckUnSupportError(pDoc, err_code);
334         }
335         catch (...) {
336                 delete pParser;
337                 SetLastError(FPDF_ERR_UNKNOWN);
338                 return NULL;
339         }
340         return pParser->GetDocument();
341 }
342
343 DLLEXPORT FPDF_DOCUMENT STDCALL FPDF_LoadCustomDocument(FPDF_FILEACCESS* pFileAccess, FPDF_BYTESTRING password)
344 {
345         CPDF_Parser* pParser = FX_NEW CPDF_Parser;
346         pParser->SetPassword(password);
347         CPDF_CustomAccess* pFile = FX_NEW CPDF_CustomAccess(pFileAccess);
348         try {
349                 FX_DWORD err_code = pParser->StartParse(pFile);
350                 if (err_code) {
351                         delete pParser;
352                         ProcessParseError(err_code);
353                         return NULL;
354                 }
355                 CPDF_Document * pDoc = NULL;
356                 pDoc = pParser?pParser->GetDocument():NULL;
357                 CheckUnSupportError(pDoc, err_code);
358         }
359         catch (...) {
360                 delete pParser;
361                 SetLastError(FPDF_ERR_UNKNOWN);
362                 return NULL;
363         }
364         return pParser->GetDocument();
365 }
366
367 DLLEXPORT FPDF_BOOL STDCALL FPDF_GetFileVersion(FPDF_DOCUMENT doc, int* fileVersion)
368 {
369         if(!doc||!fileVersion) return FALSE;
370         *fileVersion = 0;
371         CPDF_Document* pDoc = (CPDF_Document*)doc;
372         CPDF_Parser* pParser = (CPDF_Parser*)pDoc->GetParser();
373         if(!pParser)
374                 return FALSE;
375         *fileVersion = pParser->GetFileVersion();
376         return TRUE;
377 }
378
379 // jabdelmalek: changed return type from FX_DWORD to build on Linux (and match header).
380 DLLEXPORT unsigned long STDCALL FPDF_GetDocPermissions(FPDF_DOCUMENT document)
381 {
382         if (document == NULL) return 0;
383         CPDF_Document*pDoc = (CPDF_Document*)document;
384         CPDF_Parser* pParser =  (CPDF_Parser*)pDoc->GetParser();
385         CPDF_Dictionary* pDict = pParser->GetEncryptDict();
386         if (pDict == NULL) return (FX_DWORD)-1;
387
388         return pDict->GetInteger("P");
389 }
390
391 DLLEXPORT int STDCALL FPDF_GetPageCount(FPDF_DOCUMENT document)
392 {
393         if (document == NULL) return 0;
394         return ((CPDF_Document*)document)->GetPageCount();
395 }
396
397 DLLEXPORT FPDF_PAGE STDCALL FPDF_LoadPage(FPDF_DOCUMENT document, int page_index)
398 {
399         if (document == NULL) return NULL;
400         if (page_index < 0 || page_index >= FPDF_GetPageCount(document)) return NULL;
401 //      CPDF_Parser* pParser = (CPDF_Parser*)document;
402         CPDF_Document* pDoc = (CPDF_Document*)document;
403         if (pDoc == NULL) return NULL;
404         CPDF_Dictionary* pDict = pDoc->GetPage(page_index);
405         if (pDict == NULL) return NULL;
406         CPDF_Page* pPage = FX_NEW CPDF_Page;
407         pPage->Load(pDoc, pDict);
408         try {
409                 pPage->ParseContent();
410         }
411         catch (...) {
412                 delete pPage;
413                 return NULL;
414         }
415         
416 //      CheckUnSupportError(pDoc, 0);
417
418         return pPage;
419 }
420
421 DLLEXPORT double STDCALL FPDF_GetPageWidth(FPDF_PAGE page)
422 {
423         if (!page)
424                 return 0.0;
425         return ((CPDF_Page*)page)->GetPageWidth();
426 }
427
428 DLLEXPORT double STDCALL FPDF_GetPageHeight(FPDF_PAGE page)
429 {
430         if (!page) return 0.0;
431         return ((CPDF_Page*)page)->GetPageHeight();
432 }
433
434 void DropContext(void* data)
435 {
436         delete (CRenderContext*)data;
437 }
438
439 void FPDF_RenderPage_Retail(CRenderContext* pContext, FPDF_PAGE page, int start_x, int start_y, int size_x, int size_y,
440                                                 int rotate, int flags,FX_BOOL bNeedToRestore, IFSDK_PAUSE_Adapter * pause  );
441 void (*Func_RenderPage)(CRenderContext*, FPDF_PAGE page, int start_x, int start_y, int size_x, int size_y,
442                                                 int rotate, int flags,FX_BOOL bNeedToRestore, IFSDK_PAUSE_Adapter * pause  ) = FPDF_RenderPage_Retail;
443
444 #if defined(_DEBUG) || defined(DEBUG)
445 #define DEBUG_TRACE
446 #endif
447
448 #if defined(_WIN32)
449 DLLEXPORT void STDCALL FPDF_RenderPage(HDC dc, FPDF_PAGE page, int start_x, int start_y, int size_x, int size_y,
450                                                 int rotate, int flags)
451 {
452         if (page==NULL) return;
453         CPDF_Page* pPage = (CPDF_Page*)page;
454
455         CRenderContext* pContext = FX_NEW CRenderContext;
456         pPage->SetPrivateData((void*)1, pContext, DropContext);
457
458 #ifndef _WIN32_WCE
459         CFX_DIBitmap* pBitmap = NULL;
460         FX_BOOL bBackgroundAlphaNeeded=FALSE;
461         bBackgroundAlphaNeeded = pPage->BackgroundAlphaNeeded();
462         if (bBackgroundAlphaNeeded)
463         {
464                 
465                 pBitmap = FX_NEW CFX_DIBitmap;
466                 pBitmap->Create(size_x, size_y, FXDIB_Argb);
467                 pBitmap->Clear(0x00ffffff);
468 #ifdef _SKIA_SUPPORT_
469                 pContext->m_pDevice = FX_NEW CFX_SkiaDevice;
470                 ((CFX_SkiaDevice*)pContext->m_pDevice)->Attach((CFX_DIBitmap*)pBitmap);
471 #else
472                 pContext->m_pDevice = FX_NEW CFX_FxgeDevice;
473                 ((CFX_FxgeDevice*)pContext->m_pDevice)->Attach((CFX_DIBitmap*)pBitmap);
474 #endif
475         }
476         else
477             pContext->m_pDevice = FX_NEW CFX_WindowsDevice(dc);
478         if (flags & FPDF_NO_CATCH)
479                 Func_RenderPage(pContext, page, start_x, start_y, size_x, size_y, rotate, flags,TRUE,NULL);
480         else {
481                 try {
482                         Func_RenderPage(pContext, page, start_x, start_y, size_x, size_y, rotate, flags,TRUE,NULL);
483                 } catch (...) {
484                 }
485         }
486         if (bBackgroundAlphaNeeded) 
487         {
488                 if (pBitmap)
489                 {
490                         CFX_WindowsDevice WinDC(dc);
491                         
492                         if (WinDC.GetDeviceCaps(FXDC_DEVICE_CLASS) == FXDC_PRINTER)
493                         {
494                                 CFX_DIBitmap* pDst = FX_NEW CFX_DIBitmap;
495                                 pDst->Create(pBitmap->GetWidth(), pBitmap->GetHeight(),FXDIB_Rgb32);
496                                 FXSYS_memcpy(pDst->GetBuffer(), pBitmap->GetBuffer(), pBitmap->GetPitch()*pBitmap->GetHeight());
497 //                              WinDC.SetDIBits(pDst,0,0);
498                                 WinDC.StretchDIBits(pDst,0,0,size_x,size_y);
499                                 delete pDst;
500                         }
501                         else
502                                 WinDC.SetDIBits(pBitmap,0,0);
503
504                 }
505         }
506 #else
507         // get clip region
508         RECT rect, cliprect;
509         rect.left = start_x;
510         rect.top = start_y;
511         rect.right = start_x + size_x;
512         rect.bottom = start_y + size_y;
513         GetClipBox(dc, &cliprect);
514         IntersectRect(&rect, &rect, &cliprect);
515         int width = rect.right - rect.left;
516         int height = rect.bottom - rect.top;
517
518 #ifdef DEBUG_TRACE
519         {
520                 char str[128];
521                 sprintf(str, "Rendering DIB %d x %d", width, height);
522                 CPDF_ModuleMgr::Get()->ReportError(999, str);
523         }
524 #endif
525
526         // Create a DIB section
527         LPVOID pBuffer;
528         BITMAPINFOHEADER bmih;
529         FXSYS_memset(&bmih, 0, sizeof bmih);
530         bmih.biSize = sizeof bmih;
531         bmih.biBitCount = 24;
532         bmih.biHeight = -height;
533         bmih.biPlanes = 1;
534         bmih.biWidth = width;
535         pContext->m_hBitmap = CreateDIBSection(dc, (BITMAPINFO*)&bmih, DIB_RGB_COLORS, &pBuffer, NULL, 0);
536         if (pContext->m_hBitmap == NULL) {
537 #if defined(DEBUG) || defined(_DEBUG)
538                 char str[128];
539                 sprintf(str, "Error CreateDIBSection: %d x %d, error code = %d", width, height, GetLastError());
540                 CPDF_ModuleMgr::Get()->ReportError(FPDFERR_OUT_OF_MEMORY, str);
541 #else
542                 CPDF_ModuleMgr::Get()->ReportError(FPDFERR_OUT_OF_MEMORY, NULL);
543 #endif
544         }
545         FXSYS_memset(pBuffer, 0xff, height*((width*3+3)/4*4));
546
547 #ifdef DEBUG_TRACE
548         {
549                 CPDF_ModuleMgr::Get()->ReportError(999, "DIBSection created");
550         }
551 #endif
552
553         // Create a device with this external buffer
554         pContext->m_pBitmap = FX_NEW CFX_DIBitmap;
555         pContext->m_pBitmap->Create(width, height, FXDIB_Rgb, (FX_LPBYTE)pBuffer);
556         pContext->m_pDevice = FX_NEW CPDF_FxgeDevice;
557         ((CPDF_FxgeDevice*)pContext->m_pDevice)->Attach(pContext->m_pBitmap);
558         
559 #ifdef DEBUG_TRACE
560         CPDF_ModuleMgr::Get()->ReportError(999, "Ready for PDF rendering");
561 #endif
562
563         // output to bitmap device
564         if (flags & FPDF_NO_CATCH)
565                 Func_RenderPage(pContext, page, start_x - rect.left, start_y - rect.top, size_x, size_y, rotate, flags);
566         else {
567                 try {
568                         Func_RenderPage(pContext, page, start_x - rect.left, start_y - rect.top, size_x, size_y, rotate, flags);
569                 } catch (...) {
570                 }
571         }
572
573 #ifdef DEBUG_TRACE
574         CPDF_ModuleMgr::Get()->ReportError(999, "Finished PDF rendering");
575 #endif
576
577         // Now output to real device
578         HDC hMemDC = CreateCompatibleDC(dc);
579         if (hMemDC == NULL) {
580 #if defined(DEBUG) || defined(_DEBUG)
581                 char str[128];
582                 sprintf(str, "Error CreateCompatibleDC. Error code = %d", GetLastError());
583                 CPDF_ModuleMgr::Get()->ReportError(FPDFERR_OUT_OF_MEMORY, str);
584 #else
585                 CPDF_ModuleMgr::Get()->ReportError(FPDFERR_OUT_OF_MEMORY, NULL);
586 #endif
587         }
588
589         HGDIOBJ hOldBitmap = SelectObject(hMemDC, pContext->m_hBitmap);
590
591 #ifdef DEBUG_TRACE
592         CPDF_ModuleMgr::Get()->ReportError(999, "Ready for screen rendering");
593 #endif
594
595         BitBlt(dc, rect.left, rect.top, width, height, hMemDC, 0, 0, SRCCOPY);
596         SelectObject(hMemDC, hOldBitmap);
597         DeleteDC(hMemDC);
598
599 #ifdef DEBUG_TRACE
600         CPDF_ModuleMgr::Get()->ReportError(999, "Finished screen rendering");
601 #endif
602
603 #endif
604         if (bBackgroundAlphaNeeded)
605         {
606                 if (pBitmap)
607                         delete pBitmap;
608                 pBitmap = NULL;
609         }
610         delete pContext;
611         pPage->RemovePrivateData((void*)1);
612 }
613 #endif
614
615 DLLEXPORT void STDCALL FPDF_RenderPageBitmap(FPDF_BITMAP bitmap, FPDF_PAGE page, int start_x, int start_y, 
616                                                 int size_x, int size_y, int rotate, int flags)
617 {
618         if (bitmap == NULL || page == NULL) return;
619         CPDF_Page* pPage = (CPDF_Page*)page;
620
621
622         CRenderContext* pContext = FX_NEW CRenderContext;
623         pPage->SetPrivateData((void*)1, pContext, DropContext);
624 #ifdef _SKIA_SUPPORT_
625         pContext->m_pDevice = FX_NEW CFX_SkiaDevice;
626
627         if (flags & FPDF_REVERSE_BYTE_ORDER)
628                 ((CFX_SkiaDevice*)pContext->m_pDevice)->Attach((CFX_DIBitmap*)bitmap,0,TRUE);
629         else
630                 ((CFX_SkiaDevice*)pContext->m_pDevice)->Attach((CFX_DIBitmap*)bitmap);
631 #else
632         pContext->m_pDevice = FX_NEW CFX_FxgeDevice;
633
634         if (flags & FPDF_REVERSE_BYTE_ORDER)
635                 ((CFX_FxgeDevice*)pContext->m_pDevice)->Attach((CFX_DIBitmap*)bitmap,0,TRUE);
636         else
637                 ((CFX_FxgeDevice*)pContext->m_pDevice)->Attach((CFX_DIBitmap*)bitmap);
638 #endif
639         if (flags & FPDF_NO_CATCH)
640                 Func_RenderPage(pContext, page, start_x, start_y, size_x, size_y, rotate, flags,TRUE,NULL);
641         else {
642                 try {
643                         Func_RenderPage(pContext, page, start_x, start_y, size_x, size_y, rotate, flags,TRUE,NULL);
644                 } catch (...) {
645                 }
646         }
647
648         delete pContext;
649         pPage->RemovePrivateData((void*)1);
650 }
651
652 DLLEXPORT void STDCALL FPDF_ClosePage(FPDF_PAGE page)
653 {
654         if (!page) return;
655         delete (CPDF_Page*)page;
656
657 }
658
659 DLLEXPORT void STDCALL FPDF_CloseDocument(FPDF_DOCUMENT document)
660 {
661         if (!document)
662                 return;
663         CPDF_Document* pDoc = (CPDF_Document*)document; 
664         CPDF_Parser* pParser = (CPDF_Parser*)pDoc->GetParser();
665         if (pParser == NULL) 
666         {
667                 delete pDoc;
668                 return;
669         }
670         delete pParser;
671 //      delete pDoc;
672 }
673
674 DLLEXPORT unsigned long STDCALL FPDF_GetLastError()
675 {
676         return GetLastError();
677 }
678
679 DLLEXPORT void STDCALL FPDF_DeviceToPage(FPDF_PAGE page, int start_x, int start_y, int size_x, int size_y,
680                                                 int rotate, int device_x, int device_y, double* page_x, double* page_y)
681 {
682         if (page == NULL || page_x == NULL || page_y == NULL) return;
683         CPDF_Page* pPage = (CPDF_Page*)page;
684
685         CPDF_Matrix page2device;
686         pPage->GetDisplayMatrix(page2device, start_x, start_y, size_x, size_y, rotate);
687         CPDF_Matrix device2page;
688         device2page.SetReverse(page2device);
689
690         FX_FLOAT page_x_f, page_y_f;
691         device2page.Transform((FX_FLOAT)(device_x), (FX_FLOAT)(device_y), page_x_f, page_y_f);
692
693         *page_x = (page_x_f);
694         *page_y = (page_y_f);
695 }
696
697 DLLEXPORT void STDCALL FPDF_PageToDevice(FPDF_PAGE page, int start_x, int start_y, int size_x, int size_y,
698                                                 int rotate, double page_x, double page_y, int* device_x, int* device_y)
699 {
700         if (page == NULL || device_x == NULL || device_y == NULL) return;
701         CPDF_Page* pPage = (CPDF_Page*)page;
702
703         CPDF_Matrix page2device;
704         pPage->GetDisplayMatrix(page2device, start_x, start_y, size_x, size_y, rotate);
705
706         FX_FLOAT device_x_f, device_y_f;
707         page2device.Transform(((FX_FLOAT)page_x), ((FX_FLOAT)page_y), device_x_f, device_y_f);
708
709         *device_x = FXSYS_round(device_x_f);
710         *device_y = FXSYS_round(device_y_f);
711 }
712
713 DLLEXPORT FPDF_BITMAP STDCALL FPDFBitmap_Create(int width, int height, int alpha)
714 {
715         CFX_DIBitmap* pBitmap = FX_NEW CFX_DIBitmap;
716         pBitmap->Create(width, height, alpha ? FXDIB_Argb : FXDIB_Rgb32);
717         return pBitmap;
718 }
719
720 DLLEXPORT FPDF_BITMAP STDCALL FPDFBitmap_CreateEx(int width, int height, int format, void* first_scan, int stride)
721 {
722         FXDIB_Format fx_format;
723         switch (format) {
724                 case FPDFBitmap_Gray:
725                         fx_format = FXDIB_8bppRgb;
726                         break;
727                 case FPDFBitmap_BGR:
728                         fx_format = FXDIB_Rgb;
729                         break;
730                 case FPDFBitmap_BGRx:
731                         fx_format = FXDIB_Rgb32;
732                         break;
733                 case FPDFBitmap_BGRA:
734                         fx_format = FXDIB_Argb;
735                         break;
736                 default:
737                         return NULL;
738         }
739         CFX_DIBitmap* pBitmap = FX_NEW CFX_DIBitmap;
740         pBitmap->Create(width, height, fx_format, (FX_LPBYTE)first_scan, stride);
741         return pBitmap;
742 }
743
744 DLLEXPORT void STDCALL FPDFBitmap_FillRect(FPDF_BITMAP bitmap, int left, int top, int width, int height, FPDF_DWORD color)
745 {
746         if (bitmap == NULL) return;
747 #ifdef _SKIA_SUPPORT_
748         CFX_SkiaDevice device;
749 #else
750         CFX_FxgeDevice device;
751 #endif
752         device.Attach((CFX_DIBitmap*)bitmap);
753         if (!((CFX_DIBitmap*)bitmap)->HasAlpha()) color |= 0xFF000000;
754         FX_RECT rect(left, top, left+width, top+height);
755         device.FillRect(&rect, color);
756 }
757
758 DLLEXPORT void* STDCALL FPDFBitmap_GetBuffer(FPDF_BITMAP bitmap)
759 {
760         if (bitmap == NULL) return NULL;
761         return ((CFX_DIBitmap*)bitmap)->GetBuffer();
762 }
763
764 DLLEXPORT int STDCALL FPDFBitmap_GetWidth(FPDF_BITMAP bitmap)
765 {
766         if (bitmap == NULL) return 0;
767         return ((CFX_DIBitmap*)bitmap)->GetWidth();
768 }
769
770 DLLEXPORT int STDCALL FPDFBitmap_GetHeight(FPDF_BITMAP bitmap)
771 {
772         if (bitmap == NULL) return 0;
773         return ((CFX_DIBitmap*)bitmap)->GetHeight();
774 }
775
776 DLLEXPORT int STDCALL FPDFBitmap_GetStride(FPDF_BITMAP bitmap)
777 {
778         if (bitmap == NULL) return 0;
779         return ((CFX_DIBitmap*)bitmap)->GetPitch();
780 }
781
782 DLLEXPORT void STDCALL FPDFBitmap_Destroy(FPDF_BITMAP bitmap)
783 {
784         if (bitmap == NULL) return;
785         delete (CFX_DIBitmap*)bitmap;
786 }
787
788 void FPDF_RenderPage_Retail(CRenderContext* pContext, FPDF_PAGE page, int start_x, int start_y, int size_x, int size_y,
789                                                 int rotate, int flags,FX_BOOL bNeedToRestore, IFSDK_PAUSE_Adapter * pause )
790 {
791 //#ifdef _LICENSED_BUILD_
792         CPDF_Page* pPage = (CPDF_Page*)page;
793         if (pPage == NULL) return;
794
795         if (!pContext->m_pOptions)
796                 pContext->m_pOptions = new CPDF_RenderOptions;
797 //      CPDF_RenderOptions options;
798         if (flags & FPDF_LCD_TEXT)
799                 pContext->m_pOptions->m_Flags |= RENDER_CLEARTYPE;
800         else
801                 pContext->m_pOptions->m_Flags &= ~RENDER_CLEARTYPE;
802         if (flags & FPDF_NO_NATIVETEXT)
803                 pContext->m_pOptions->m_Flags |= RENDER_NO_NATIVETEXT;
804         if (flags & FPDF_RENDER_LIMITEDIMAGECACHE)
805                 pContext->m_pOptions->m_Flags |= RENDER_LIMITEDIMAGECACHE;
806         if (flags & FPDF_RENDER_FORCEHALFTONE)
807                 pContext->m_pOptions->m_Flags |= RENDER_FORCE_HALFTONE;
808         //Grayscale output
809         if (flags & FPDF_GRAYSCALE)
810         {
811                 pContext->m_pOptions->m_ColorMode = RENDER_COLOR_GRAY;
812                 pContext->m_pOptions->m_ForeColor = 0;
813                 pContext->m_pOptions->m_BackColor = 0xffffff;
814         }
815         const CPDF_OCContext::UsageType usage = (flags & FPDF_PRINTING) ? CPDF_OCContext::Print : CPDF_OCContext::View;
816
817         pContext->m_pOptions->m_AddFlags = flags >> 8;
818
819         pContext->m_pOptions->m_pOCContext = new CPDF_OCContext(pPage->m_pDocument, usage);
820
821
822         CFX_AffineMatrix matrix;
823         pPage->GetDisplayMatrix(matrix, start_x, start_y, size_x, size_y, rotate); 
824
825         FX_RECT clip;
826         clip.left = start_x;
827         clip.right = start_x + size_x;
828         clip.top = start_y;
829         clip.bottom = start_y + size_y;
830         pContext->m_pDevice->SaveState();
831         pContext->m_pDevice->SetClip_Rect(&clip);
832
833         pContext->m_pContext = FX_NEW CPDF_RenderContext;
834         pContext->m_pContext->Create(pPage);
835         pContext->m_pContext->AppendObjectList(pPage, &matrix);
836
837         if (flags & FPDF_ANNOT) {
838                 pContext->m_pAnnots = FX_NEW CPDF_AnnotList(pPage);
839                 FX_BOOL bPrinting = pContext->m_pDevice->GetDeviceClass() != FXDC_DISPLAY;
840                 pContext->m_pAnnots->DisplayAnnots(pPage, pContext->m_pContext, bPrinting, &matrix, TRUE, NULL);
841         }
842
843         pContext->m_pRenderer = FX_NEW CPDF_ProgressiveRenderer;
844         pContext->m_pRenderer->Start(pContext->m_pContext, pContext->m_pDevice, pContext->m_pOptions, pause);
845         if (bNeedToRestore)
846         {
847           pContext->m_pDevice->RestoreState();
848         }
849         
850 //#endif
851 }
852
853 DLLEXPORT int STDCALL FPDF_GetPageSizeByIndex(FPDF_DOCUMENT document, int page_index, double* width, double* height)
854 {
855         CPDF_Document* pDoc = (CPDF_Document*)document;
856         if(pDoc == NULL)
857                 return FALSE;
858
859         CPDF_Dictionary* pDict = pDoc->GetPage(page_index);
860         if (pDict == NULL) return FALSE;
861
862         CPDF_Page page;
863         page.Load(pDoc, pDict);
864         *width = page.GetPageWidth();
865         *height = page.GetPageHeight();
866
867         return TRUE;
868 }
869
870 DLLEXPORT FPDF_BOOL STDCALL FPDF_VIEWERREF_GetPrintScaling(FPDF_DOCUMENT document)
871 {
872         CPDF_Document* pDoc = (CPDF_Document*)document;
873         if (!pDoc) return TRUE;
874         CPDF_ViewerPreferences viewRef(pDoc);
875         return viewRef.PrintScaling();
876 }
877
878 DLLEXPORT int STDCALL FPDF_VIEWERREF_GetNumCopies(FPDF_DOCUMENT document)
879 {
880     CPDF_Document* pDoc = (CPDF_Document*)document;
881     if (!pDoc) return 1;
882     CPDF_ViewerPreferences viewRef(pDoc);
883     return viewRef.NumCopies();
884 }
885
886 DLLEXPORT FPDF_PAGERANGE STDCALL FPDF_VIEWERREF_GetPrintPageRange(FPDF_DOCUMENT document)
887 {
888     CPDF_Document* pDoc = (CPDF_Document*)document;
889     if (!pDoc) return NULL;
890     CPDF_ViewerPreferences viewRef(pDoc);
891     return viewRef.PrintPageRange();
892 }
893
894 DLLEXPORT FPDF_DUPLEXTYPE STDCALL FPDF_VIEWERREF_GetDuplex(FPDF_DOCUMENT document)
895 {
896     CPDF_Document* pDoc = (CPDF_Document*)document;
897     if (!pDoc) return DuplexUndefined;
898     CPDF_ViewerPreferences viewRef(pDoc);
899     CFX_ByteString duplex = viewRef.Duplex();
900     if (FX_BSTRC("Simplex") == duplex)
901         return Simplex;
902     if (FX_BSTRC("DuplexFlipShortEdge") == duplex)
903         return DuplexFlipShortEdge;
904     if (FX_BSTRC("DuplexFlipLongEdge") == duplex)
905         return DuplexFlipLongEdge;
906     return DuplexUndefined;
907 }
908
909 DLLEXPORT FPDF_DEST STDCALL FPDF_GetNamedDestByName(FPDF_DOCUMENT document,FPDF_BYTESTRING name)
910 {
911         if (document == NULL)
912                 return NULL;
913         if (name == NULL || name[0] == 0) 
914                 return NULL;
915
916         CPDF_Document* pDoc = (CPDF_Document*)document;
917         CPDF_NameTree name_tree(pDoc, FX_BSTRC("Dests"));
918         return name_tree.LookupNamedDest(pDoc, name);
919 }