Remove more cruft from fx_system.h
[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 "../../core/include/fxcrt/fx_safe_types.h"
8 #include "../../public/fpdf_ext.h"
9 #include "../../public/fpdf_progressive.h"
10 #include "../../public/fpdfview.h"
11 #include "../../third_party/base/nonstd_unique_ptr.h"
12 #include "../../third_party/base/numerics/safe_conversions_impl.h"
13 #include "../include/fsdk_define.h"
14 #include "../include/fsdk_mgr.h"
15 #include "../include/fsdk_rendercontext.h"
16
17 CPDF_CustomAccess::CPDF_CustomAccess(FPDF_FILEACCESS* pFileAccess)
18 {
19         if (pFileAccess)
20                 m_FileAccess = *pFileAccess;
21 }
22
23 FX_BOOL CPDF_CustomAccess::ReadBlock(void* buffer, FX_FILESIZE offset, size_t size)
24 {
25     if (offset < 0) {
26         return FALSE;
27     }
28     FX_SAFE_FILESIZE newPos = pdfium::base::checked_cast<FX_FILESIZE, size_t>(size);
29     newPos += offset;
30     if (!newPos.IsValid() || newPos.ValueOrDie() > m_FileAccess.m_FileLen) {
31         return FALSE;
32     }
33     return m_FileAccess.m_GetBlock(m_FileAccess.m_Param, offset,(FX_LPBYTE) buffer, size);
34 }
35
36 //0 bit: FPDF_POLICY_MACHINETIME_ACCESS
37 static FX_DWORD foxit_sandbox_policy = 0xFFFFFFFF;
38
39 void FSDK_SetSandBoxPolicy(FPDF_DWORD policy, FPDF_BOOL enable)
40 {
41         switch(policy)
42         {
43         case FPDF_POLICY_MACHINETIME_ACCESS:
44                 {
45                         if(enable)
46                                 foxit_sandbox_policy |= 0x01;
47                         else
48                                 foxit_sandbox_policy &= 0xFFFFFFFE;
49                 }
50                 break;
51         default:
52                 break;
53         }
54 }
55
56 FPDF_BOOL FSDK_IsSandBoxPolicyEnabled(FPDF_DWORD policy)
57 {
58         switch(policy)
59         {
60         case FPDF_POLICY_MACHINETIME_ACCESS:
61                 {
62                         if(foxit_sandbox_policy&0x01)
63                                 return TRUE;
64                         else
65                                 return FALSE;
66                 }
67                 break;
68         default:
69                 break;
70         }
71         return FALSE;
72 }
73
74
75 #ifndef _T
76 #define _T(x) x
77 #endif
78
79 #ifdef API5
80         CPDF_ModuleMgr* g_pModuleMgr = NULL;
81 #else
82         CCodec_ModuleMgr*       g_pCodecModule = NULL;
83 #endif
84
85 //extern CPDFSDK_FormFillApp* g_pFormFillApp;
86
87 #if _FX_OS_ == _FX_LINUX_EMBEDDED_
88 class CFontMapper : public IPDF_FontMapper
89 {
90 public:
91         CFontMapper();
92         virtual ~CFontMapper();
93
94         virtual FT_Face FindSubstFont(
95                                                         CPDF_Document* pDoc,                            // [IN] The PDF document
96                                                         const CFX_ByteString& face_name,        // [IN] Original name
97                                                         FX_BOOL bTrueType,                                      // [IN] TrueType or Type1
98                                                         FX_DWORD flags,                                         // [IN] PDF font flags (see PDF Reference section 5.7.1)
99                                                         int font_weight,                                        // [IN] original font weight. 0 for not specified
100                                                         int CharsetCP,                                          // [IN] code page for charset (see Win32 GetACP())
101                                                         FX_BOOL bVertical,
102                                                         CPDF_SubstFont* pSubstFont                      // [OUT] Subst font data
103                                                 );
104
105         FT_Face m_SysFace;
106 };
107
108 CFontMapper* g_pFontMapper = NULL;
109 #endif          // #if _FX_OS_ == _FX_LINUX_EMBEDDED_
110
111 DLLEXPORT void STDCALL FPDF_InitLibrary()
112 {
113         g_pCodecModule = CCodec_ModuleMgr::Create();
114         
115         CFX_GEModule::Create();
116         CFX_GEModule::Get()->SetCodecModule(g_pCodecModule);
117         
118         CPDF_ModuleMgr::Create();
119         CPDF_ModuleMgr::Get()->SetCodecModule(g_pCodecModule);
120         CPDF_ModuleMgr::Get()->InitPageModule();
121         CPDF_ModuleMgr::Get()->InitRenderModule();
122         CPDF_ModuleMgr * pModuleMgr = CPDF_ModuleMgr::Get();
123         if ( pModuleMgr )
124         {
125                 pModuleMgr->LoadEmbeddedGB1CMaps();
126                 pModuleMgr->LoadEmbeddedJapan1CMaps();
127                 pModuleMgr->LoadEmbeddedCNS1CMaps();
128                 pModuleMgr->LoadEmbeddedKorea1CMaps();
129         }
130 }
131
132
133 DLLEXPORT void STDCALL FPDF_DestroyLibrary()
134 {
135
136 #if _FX_OS_ == _FX_LINUX_EMBEDDED_
137         if (g_pFontMapper) delete g_pFontMapper;
138 #endif
139 #ifdef API5
140         g_pModuleMgr->Destroy();
141 #else
142         CPDF_ModuleMgr::Destroy();
143         CFX_GEModule::Destroy();
144         g_pCodecModule->Destroy();
145 #endif
146 }
147
148 #ifndef _WIN32
149 int g_LastError;
150 void SetLastError(int err)
151 {
152         g_LastError = err;
153 }
154
155 int GetLastError()
156 {
157         return g_LastError;
158 }
159 #endif
160
161 void ProcessParseError(FX_DWORD err_code)
162 {
163         // Translate FPDFAPI error code to FPDFVIEW error code
164         switch (err_code) {
165                 case PDFPARSE_ERROR_FILE:
166                         err_code = FPDF_ERR_FILE;
167                         break;
168                 case PDFPARSE_ERROR_FORMAT:
169                         err_code = FPDF_ERR_FORMAT;
170                         break;
171                 case PDFPARSE_ERROR_PASSWORD:
172                         err_code = FPDF_ERR_PASSWORD;
173                         break;
174                 case PDFPARSE_ERROR_HANDLER:
175                         err_code = FPDF_ERR_SECURITY;
176                         break;
177         }
178         SetLastError(err_code);
179 }
180
181 DLLEXPORT void  STDCALL FPDF_SetSandBoxPolicy(FPDF_DWORD policy, FPDF_BOOL enable)
182 {
183         return FSDK_SetSandBoxPolicy(policy, enable);
184 }
185
186 DLLEXPORT FPDF_DOCUMENT STDCALL FPDF_LoadDocument(FPDF_STRING file_path, FPDF_BYTESTRING password)
187 {
188         CPDF_Parser* pParser = new CPDF_Parser;
189         pParser->SetPassword(password);
190
191         FX_DWORD err_code = pParser->StartParse((FX_LPCSTR)file_path);
192         if (err_code) {
193                 delete pParser;
194                 ProcessParseError(err_code);
195                 return NULL;
196         }
197         return pParser->GetDocument();
198 }
199
200 extern void CheckUnSupportError(CPDF_Document * pDoc, FX_DWORD err_code);
201
202 class CMemFile final: public IFX_FileRead
203 {
204 public:
205         CMemFile(FX_BYTE* pBuf, FX_FILESIZE size):m_pBuf(pBuf),m_size(size) {}
206
207         virtual void                    Release() {delete this;}
208         virtual FX_FILESIZE             GetSize() {return m_size;}
209         virtual FX_BOOL                 ReadBlock(void* buffer, FX_FILESIZE offset, size_t size) 
210         {
211             if (offset < 0) {
212                 return FALSE;
213             }
214             FX_SAFE_FILESIZE newPos = pdfium::base::checked_cast<FX_FILESIZE, size_t>(size);
215             newPos += offset;
216             if (!newPos.IsValid() || newPos.ValueOrDie() > (FX_DWORD)m_size) {
217                 return FALSE;
218             }
219             FXSYS_memcpy(buffer, m_pBuf+offset, size);
220             return TRUE;
221         }
222 private:
223         FX_BYTE* m_pBuf;
224         FX_FILESIZE m_size;
225 };
226 DLLEXPORT FPDF_DOCUMENT STDCALL FPDF_LoadMemDocument(const void* data_buf, int size, FPDF_BYTESTRING password)
227 {
228         CPDF_Parser* pParser = new CPDF_Parser;
229         pParser->SetPassword(password);
230         CMemFile* pMemFile = new CMemFile((FX_BYTE*)data_buf, size);
231         FX_DWORD err_code = pParser->StartParse(pMemFile);
232         if (err_code) {
233                 delete pParser;
234                 ProcessParseError(err_code);
235                 return NULL;
236         }
237         CPDF_Document * pDoc = NULL;
238         pDoc = pParser?pParser->GetDocument():NULL;
239         CheckUnSupportError(pDoc, err_code);
240         return pParser->GetDocument();
241 }
242
243 DLLEXPORT FPDF_DOCUMENT STDCALL FPDF_LoadCustomDocument(FPDF_FILEACCESS* pFileAccess, FPDF_BYTESTRING password)
244 {
245         CPDF_Parser* pParser = new CPDF_Parser;
246         pParser->SetPassword(password);
247         CPDF_CustomAccess* pFile = new CPDF_CustomAccess(pFileAccess);
248         FX_DWORD err_code = pParser->StartParse(pFile);
249         if (err_code) {
250                 delete pParser;
251                 ProcessParseError(err_code);
252                 return NULL;
253         }
254         CPDF_Document * pDoc = NULL;
255         pDoc = pParser?pParser->GetDocument():NULL;
256         CheckUnSupportError(pDoc, err_code);
257         return pParser->GetDocument();
258 }
259
260 DLLEXPORT FPDF_BOOL STDCALL FPDF_GetFileVersion(FPDF_DOCUMENT doc, int* fileVersion)
261 {
262         if(!doc||!fileVersion) return FALSE;
263         *fileVersion = 0;
264         CPDF_Document* pDoc = (CPDF_Document*)doc;
265         CPDF_Parser* pParser = (CPDF_Parser*)pDoc->GetParser();
266         if(!pParser)
267                 return FALSE;
268         *fileVersion = pParser->GetFileVersion();
269         return TRUE;
270 }
271
272 // jabdelmalek: changed return type from FX_DWORD to build on Linux (and match header).
273 DLLEXPORT unsigned long STDCALL FPDF_GetDocPermissions(FPDF_DOCUMENT document)
274 {
275         if (document == NULL) return 0;
276         CPDF_Document*pDoc = (CPDF_Document*)document;
277         CPDF_Parser* pParser =  (CPDF_Parser*)pDoc->GetParser();
278         CPDF_Dictionary* pDict = pParser->GetEncryptDict();
279         if (pDict == NULL) return (FX_DWORD)-1;
280
281         return pDict->GetInteger("P");
282 }
283
284 DLLEXPORT int STDCALL FPDF_GetSecurityHandlerRevision(FPDF_DOCUMENT document)
285 {
286     if (document == NULL) return -1;
287     CPDF_Document*pDoc = (CPDF_Document*)document;
288     CPDF_Parser* pParser = (CPDF_Parser*)pDoc->GetParser();
289     CPDF_Dictionary* pDict = pParser->GetEncryptDict();
290     if (pDict == NULL) return -1;
291
292     return pDict->GetInteger("R");
293 }
294
295 DLLEXPORT int STDCALL FPDF_GetPageCount(FPDF_DOCUMENT document)
296 {
297         if (document == NULL) return 0;
298         return ((CPDF_Document*)document)->GetPageCount();
299 }
300
301 DLLEXPORT FPDF_PAGE STDCALL FPDF_LoadPage(FPDF_DOCUMENT document, int page_index)
302 {
303         if (document == NULL) return NULL;
304         if (page_index < 0 || page_index >= FPDF_GetPageCount(document)) return NULL;
305
306         CPDF_Document* pDoc = (CPDF_Document*)document;
307         if (pDoc == NULL) return NULL;
308         CPDF_Dictionary* pDict = pDoc->GetPage(page_index);
309         if (pDict == NULL) return NULL;
310         CPDF_Page* pPage = new CPDF_Page;
311         pPage->Load(pDoc, pDict);
312         pPage->ParseContent();
313         return pPage;
314 }
315
316 DLLEXPORT double STDCALL FPDF_GetPageWidth(FPDF_PAGE page)
317 {
318         if (!page)
319                 return 0.0;
320         return ((CPDF_Page*)page)->GetPageWidth();
321 }
322
323 DLLEXPORT double STDCALL FPDF_GetPageHeight(FPDF_PAGE page)
324 {
325         if (!page) return 0.0;
326         return ((CPDF_Page*)page)->GetPageHeight();
327 }
328
329 void DropContext(void* data)
330 {
331         delete (CRenderContext*)data;
332 }
333
334 void FPDF_RenderPage_Retail(CRenderContext* pContext, FPDF_PAGE page, int start_x, int start_y, int size_x, int size_y,
335                                                 int rotate, int flags,FX_BOOL bNeedToRestore, IFSDK_PAUSE_Adapter * pause  );
336 void (*Func_RenderPage)(CRenderContext*, FPDF_PAGE page, int start_x, int start_y, int size_x, int size_y,
337                                                 int rotate, int flags,FX_BOOL bNeedToRestore, IFSDK_PAUSE_Adapter * pause  ) = FPDF_RenderPage_Retail;
338
339 #if defined(_DEBUG) || defined(DEBUG)
340 #define DEBUG_TRACE
341 #endif
342
343 #if defined(_WIN32)
344 DLLEXPORT void STDCALL FPDF_RenderPage(HDC dc, FPDF_PAGE page, int start_x, int start_y, int size_x, int size_y,
345                                                 int rotate, int flags)
346 {
347         if (page==NULL) return;
348         CPDF_Page* pPage = (CPDF_Page*)page;
349
350         CRenderContext* pContext = new CRenderContext;
351         pPage->SetPrivateData((void*)1, pContext, DropContext);
352
353 #ifndef _WIN32_WCE
354         CFX_DIBitmap* pBitmap = NULL;
355         FX_BOOL bBackgroundAlphaNeeded=FALSE;
356         bBackgroundAlphaNeeded = pPage->BackgroundAlphaNeeded();
357         if (bBackgroundAlphaNeeded)
358         {
359                 
360                 pBitmap = new CFX_DIBitmap;
361                 pBitmap->Create(size_x, size_y, FXDIB_Argb);
362                 pBitmap->Clear(0x00ffffff);
363 #ifdef _SKIA_SUPPORT_
364                 pContext->m_pDevice = new CFX_SkiaDevice;
365                 ((CFX_SkiaDevice*)pContext->m_pDevice)->Attach((CFX_DIBitmap*)pBitmap);
366 #else
367                 pContext->m_pDevice = new CFX_FxgeDevice;
368                 ((CFX_FxgeDevice*)pContext->m_pDevice)->Attach((CFX_DIBitmap*)pBitmap);
369 #endif
370         }
371         else
372             pContext->m_pDevice = new CFX_WindowsDevice(dc);
373
374         Func_RenderPage(pContext, page, start_x, start_y, size_x, size_y, rotate, flags,TRUE,NULL);
375
376         if (bBackgroundAlphaNeeded) 
377         {
378                 if (pBitmap)
379                 {
380                         CFX_WindowsDevice WinDC(dc);
381                         
382                         if (WinDC.GetDeviceCaps(FXDC_DEVICE_CLASS) == FXDC_PRINTER)
383                         {
384                                 CFX_DIBitmap* pDst = new CFX_DIBitmap;
385                                 int pitch = pBitmap->GetPitch();
386                                 pDst->Create(size_x, size_y, FXDIB_Rgb32);
387                                 FXSYS_memset(pDst->GetBuffer(), -1, pitch*size_y);
388                                 pDst->CompositeBitmap(0, 0, size_x, size_y, pBitmap, 0, 0, FXDIB_BLEND_NORMAL, NULL, FALSE, NULL);
389                                 WinDC.StretchDIBits(pDst,0,0,size_x,size_y);
390                                 delete pDst;
391                         }
392                         else
393                                 WinDC.SetDIBits(pBitmap,0,0);
394
395                 }
396         }
397 #else
398         // get clip region
399         RECT rect, cliprect;
400         rect.left = start_x;
401         rect.top = start_y;
402         rect.right = start_x + size_x;
403         rect.bottom = start_y + size_y;
404         GetClipBox(dc, &cliprect);
405         IntersectRect(&rect, &rect, &cliprect);
406         int width = rect.right - rect.left;
407         int height = rect.bottom - rect.top;
408
409 #ifdef DEBUG_TRACE
410         {
411                 char str[128];
412                 memset(str, 0, sizeof(str));
413                 FXSYS_snprintf(str, sizeof(str) - 1, "Rendering DIB %d x %d", width, height);
414                 CPDF_ModuleMgr::Get()->ReportError(999, str);
415         }
416 #endif
417
418         // Create a DIB section
419         LPVOID pBuffer;
420         BITMAPINFOHEADER bmih;
421         FXSYS_memset(&bmih, 0, sizeof bmih);
422         bmih.biSize = sizeof bmih;
423         bmih.biBitCount = 24;
424         bmih.biHeight = -height;
425         bmih.biPlanes = 1;
426         bmih.biWidth = width;
427         pContext->m_hBitmap = CreateDIBSection(dc, (BITMAPINFO*)&bmih, DIB_RGB_COLORS, &pBuffer, NULL, 0);
428         if (pContext->m_hBitmap == NULL) {
429 #if defined(DEBUG) || defined(_DEBUG)
430                 char str[128];
431                 memset(str, 0, sizeof(str));
432                 FXSYS_snprintf(str, sizeof(str) - 1, "Error CreateDIBSection: %d x %d, error code = %d", width, height, GetLastError());
433                 CPDF_ModuleMgr::Get()->ReportError(FPDFERR_OUT_OF_MEMORY, str);
434 #else
435                 CPDF_ModuleMgr::Get()->ReportError(FPDFERR_OUT_OF_MEMORY, NULL);
436 #endif
437         }
438         FXSYS_memset(pBuffer, 0xff, height*((width*3+3)/4*4));
439
440 #ifdef DEBUG_TRACE
441         {
442                 CPDF_ModuleMgr::Get()->ReportError(999, "DIBSection created");
443         }
444 #endif
445
446         // Create a device with this external buffer
447         pContext->m_pBitmap = new CFX_DIBitmap;
448         pContext->m_pBitmap->Create(width, height, FXDIB_Rgb, (FX_LPBYTE)pBuffer);
449         pContext->m_pDevice = new CPDF_FxgeDevice;
450         ((CPDF_FxgeDevice*)pContext->m_pDevice)->Attach(pContext->m_pBitmap);
451
452 #ifdef DEBUG_TRACE
453         CPDF_ModuleMgr::Get()->ReportError(999, "Ready for PDF rendering");
454 #endif
455
456         // output to bitmap device
457         Func_RenderPage(pContext, page, start_x - rect.left, start_y - rect.top, size_x, size_y, rotate, flags);
458
459 #ifdef DEBUG_TRACE
460         CPDF_ModuleMgr::Get()->ReportError(999, "Finished PDF rendering");
461 #endif
462
463         // Now output to real device
464         HDC hMemDC = CreateCompatibleDC(dc);
465         if (hMemDC == NULL) {
466 #if defined(DEBUG) || defined(_DEBUG)
467                 char str[128];
468                 memset(str, 0, sizeof(str));
469                 FXSYS_snprintf(str, sizeof(str) - 1, "Error CreateCompatibleDC. Error code = %d", GetLastError());
470                 CPDF_ModuleMgr::Get()->ReportError(FPDFERR_OUT_OF_MEMORY, str);
471 #else
472                 CPDF_ModuleMgr::Get()->ReportError(FPDFERR_OUT_OF_MEMORY, NULL);
473 #endif
474         }
475
476         HGDIOBJ hOldBitmap = SelectObject(hMemDC, pContext->m_hBitmap);
477
478 #ifdef DEBUG_TRACE
479         CPDF_ModuleMgr::Get()->ReportError(999, "Ready for screen rendering");
480 #endif
481
482         BitBlt(dc, rect.left, rect.top, width, height, hMemDC, 0, 0, SRCCOPY);
483         SelectObject(hMemDC, hOldBitmap);
484         DeleteDC(hMemDC);
485
486 #ifdef DEBUG_TRACE
487         CPDF_ModuleMgr::Get()->ReportError(999, "Finished screen rendering");
488 #endif
489
490 #endif
491         if (bBackgroundAlphaNeeded)
492         {
493                 if (pBitmap)
494                         delete pBitmap;
495                 pBitmap = NULL;
496         }
497         delete pContext;
498         pPage->RemovePrivateData((void*)1);
499 }
500 #endif
501
502 DLLEXPORT void STDCALL FPDF_RenderPageBitmap(FPDF_BITMAP bitmap, FPDF_PAGE page, int start_x, int start_y, 
503                                                 int size_x, int size_y, int rotate, int flags)
504 {
505         if (bitmap == NULL || page == NULL) return;
506         CPDF_Page* pPage = (CPDF_Page*)page;
507
508
509         CRenderContext* pContext = new CRenderContext;
510         pPage->SetPrivateData((void*)1, pContext, DropContext);
511 #ifdef _SKIA_SUPPORT_
512         pContext->m_pDevice = new CFX_SkiaDevice;
513
514         if (flags & FPDF_REVERSE_BYTE_ORDER)
515                 ((CFX_SkiaDevice*)pContext->m_pDevice)->Attach((CFX_DIBitmap*)bitmap,0,TRUE);
516         else
517                 ((CFX_SkiaDevice*)pContext->m_pDevice)->Attach((CFX_DIBitmap*)bitmap);
518 #else
519         pContext->m_pDevice = new CFX_FxgeDevice;
520
521         if (flags & FPDF_REVERSE_BYTE_ORDER)
522                 ((CFX_FxgeDevice*)pContext->m_pDevice)->Attach((CFX_DIBitmap*)bitmap,0,TRUE);
523         else
524                 ((CFX_FxgeDevice*)pContext->m_pDevice)->Attach((CFX_DIBitmap*)bitmap);
525 #endif
526
527         Func_RenderPage(pContext, page, start_x, start_y, size_x, size_y, rotate, flags,TRUE,NULL);
528
529         delete pContext;
530         pPage->RemovePrivateData((void*)1);
531 }
532
533 DLLEXPORT void STDCALL FPDF_ClosePage(FPDF_PAGE page)
534 {
535         if (!page) return;
536         CPDFSDK_PageView* pPageView = (CPDFSDK_PageView*)(((CPDF_Page*)page))->GetPrivateData((FX_LPVOID)page);
537         if (pPageView && pPageView->IsLocked()) {
538             pPageView->TakeOverPage();
539             return;
540         }
541         delete (CPDF_Page*)page;
542
543 }
544
545 DLLEXPORT void STDCALL FPDF_CloseDocument(FPDF_DOCUMENT document)
546 {
547         if (!document)
548                 return;
549         CPDF_Document* pDoc = (CPDF_Document*)document; 
550         CPDF_Parser* pParser = (CPDF_Parser*)pDoc->GetParser();
551         if (pParser == NULL) 
552         {
553                 delete pDoc;
554                 return;
555         }
556         delete pParser;
557 //      delete pDoc;
558 }
559
560 DLLEXPORT unsigned long STDCALL FPDF_GetLastError()
561 {
562         return GetLastError();
563 }
564
565 DLLEXPORT void STDCALL FPDF_DeviceToPage(FPDF_PAGE page, int start_x, int start_y, int size_x, int size_y,
566                                                 int rotate, int device_x, int device_y, double* page_x, double* page_y)
567 {
568         if (page == NULL || page_x == NULL || page_y == NULL) return;
569         CPDF_Page* pPage = (CPDF_Page*)page;
570
571         CPDF_Matrix page2device;
572         pPage->GetDisplayMatrix(page2device, start_x, start_y, size_x, size_y, rotate);
573         CPDF_Matrix device2page;
574         device2page.SetReverse(page2device);
575
576         FX_FLOAT page_x_f, page_y_f;
577         device2page.Transform((FX_FLOAT)(device_x), (FX_FLOAT)(device_y), page_x_f, page_y_f);
578
579         *page_x = (page_x_f);
580         *page_y = (page_y_f);
581 }
582
583 DLLEXPORT void STDCALL FPDF_PageToDevice(FPDF_PAGE page, int start_x, int start_y, int size_x, int size_y,
584                                                 int rotate, double page_x, double page_y, int* device_x, int* device_y)
585 {
586         if (page == NULL || device_x == NULL || device_y == NULL) return;
587         CPDF_Page* pPage = (CPDF_Page*)page;
588
589         CPDF_Matrix page2device;
590         pPage->GetDisplayMatrix(page2device, start_x, start_y, size_x, size_y, rotate);
591
592         FX_FLOAT device_x_f, device_y_f;
593         page2device.Transform(((FX_FLOAT)page_x), ((FX_FLOAT)page_y), device_x_f, device_y_f);
594
595         *device_x = FXSYS_round(device_x_f);
596         *device_y = FXSYS_round(device_y_f);
597 }
598
599 DLLEXPORT FPDF_BITMAP STDCALL FPDFBitmap_Create(int width, int height, int alpha)
600 {
601     nonstd::unique_ptr<CFX_DIBitmap> pBitmap(new CFX_DIBitmap);
602     if (!pBitmap->Create(width, height, alpha ? FXDIB_Argb : FXDIB_Rgb32)) {
603         return NULL;
604     }
605     return pBitmap.release();
606 }
607
608 DLLEXPORT FPDF_BITMAP STDCALL FPDFBitmap_CreateEx(int width, int height, int format, void* first_scan, int stride)
609 {
610         FXDIB_Format fx_format;
611         switch (format) {
612                 case FPDFBitmap_Gray:
613                         fx_format = FXDIB_8bppRgb;
614                         break;
615                 case FPDFBitmap_BGR:
616                         fx_format = FXDIB_Rgb;
617                         break;
618                 case FPDFBitmap_BGRx:
619                         fx_format = FXDIB_Rgb32;
620                         break;
621                 case FPDFBitmap_BGRA:
622                         fx_format = FXDIB_Argb;
623                         break;
624                 default:
625                         return NULL;
626         }
627         CFX_DIBitmap* pBitmap = new CFX_DIBitmap;
628         pBitmap->Create(width, height, fx_format, (FX_LPBYTE)first_scan, stride);
629         return pBitmap;
630 }
631
632 DLLEXPORT void STDCALL FPDFBitmap_FillRect(FPDF_BITMAP bitmap, int left, int top, int width, int height, FPDF_DWORD color)
633 {
634         if (bitmap == NULL) return;
635 #ifdef _SKIA_SUPPORT_
636         CFX_SkiaDevice device;
637 #else
638         CFX_FxgeDevice device;
639 #endif
640         device.Attach((CFX_DIBitmap*)bitmap);
641         if (!((CFX_DIBitmap*)bitmap)->HasAlpha()) color |= 0xFF000000;
642         FX_RECT rect(left, top, left+width, top+height);
643         device.FillRect(&rect, color);
644 }
645
646 DLLEXPORT void* STDCALL FPDFBitmap_GetBuffer(FPDF_BITMAP bitmap)
647 {
648         if (bitmap == NULL) return NULL;
649         return ((CFX_DIBitmap*)bitmap)->GetBuffer();
650 }
651
652 DLLEXPORT int STDCALL FPDFBitmap_GetWidth(FPDF_BITMAP bitmap)
653 {
654         if (bitmap == NULL) return 0;
655         return ((CFX_DIBitmap*)bitmap)->GetWidth();
656 }
657
658 DLLEXPORT int STDCALL FPDFBitmap_GetHeight(FPDF_BITMAP bitmap)
659 {
660         if (bitmap == NULL) return 0;
661         return ((CFX_DIBitmap*)bitmap)->GetHeight();
662 }
663
664 DLLEXPORT int STDCALL FPDFBitmap_GetStride(FPDF_BITMAP bitmap)
665 {
666         if (bitmap == NULL) return 0;
667         return ((CFX_DIBitmap*)bitmap)->GetPitch();
668 }
669
670 DLLEXPORT void STDCALL FPDFBitmap_Destroy(FPDF_BITMAP bitmap)
671 {
672         if (bitmap == NULL) return;
673         delete (CFX_DIBitmap*)bitmap;
674 }
675
676 void FPDF_RenderPage_Retail(CRenderContext* pContext, FPDF_PAGE page, int start_x, int start_y, int size_x, int size_y,
677                                                 int rotate, int flags,FX_BOOL bNeedToRestore, IFSDK_PAUSE_Adapter * pause )
678 {
679         CPDF_Page* pPage = (CPDF_Page*)page;
680         if (pPage == NULL) return;
681
682         if (!pContext->m_pOptions)
683                 pContext->m_pOptions = new CPDF_RenderOptions;
684 //      CPDF_RenderOptions options;
685         if (flags & FPDF_LCD_TEXT)
686                 pContext->m_pOptions->m_Flags |= RENDER_CLEARTYPE;
687         else
688                 pContext->m_pOptions->m_Flags &= ~RENDER_CLEARTYPE;
689         if (flags & FPDF_NO_NATIVETEXT)
690                 pContext->m_pOptions->m_Flags |= RENDER_NO_NATIVETEXT;
691         if (flags & FPDF_RENDER_LIMITEDIMAGECACHE)
692                 pContext->m_pOptions->m_Flags |= RENDER_LIMITEDIMAGECACHE;
693         if (flags & FPDF_RENDER_FORCEHALFTONE)
694                 pContext->m_pOptions->m_Flags |= RENDER_FORCE_HALFTONE;
695         if (flags & FPDF_RENDER_NO_SMOOTHTEXT)
696                 pContext->m_pOptions->m_Flags |= RENDER_NOTEXTSMOOTH;
697         if (flags & FPDF_RENDER_NO_SMOOTHIMAGE)
698                 pContext->m_pOptions->m_Flags |= RENDER_NOIMAGESMOOTH;
699         if (flags & FPDF_RENDER_NO_SMOOTHPATH)
700                 pContext->m_pOptions->m_Flags |= RENDER_NOPATHSMOOTH;
701         //Grayscale output
702         if (flags & FPDF_GRAYSCALE)
703         {
704                 pContext->m_pOptions->m_ColorMode = RENDER_COLOR_GRAY;
705                 pContext->m_pOptions->m_ForeColor = 0;
706                 pContext->m_pOptions->m_BackColor = 0xffffff;
707         }
708         const CPDF_OCContext::UsageType usage = (flags & FPDF_PRINTING) ? CPDF_OCContext::Print : CPDF_OCContext::View;
709
710         pContext->m_pOptions->m_AddFlags = flags >> 8;
711
712         pContext->m_pOptions->m_pOCContext = new CPDF_OCContext(pPage->m_pDocument, usage);
713
714
715         CFX_AffineMatrix matrix;
716         pPage->GetDisplayMatrix(matrix, start_x, start_y, size_x, size_y, rotate); 
717
718         FX_RECT clip;
719         clip.left = start_x;
720         clip.right = start_x + size_x;
721         clip.top = start_y;
722         clip.bottom = start_y + size_y;
723         pContext->m_pDevice->SaveState();
724         pContext->m_pDevice->SetClip_Rect(&clip);
725
726         pContext->m_pContext = new CPDF_RenderContext;
727         pContext->m_pContext->Create(pPage);
728         pContext->m_pContext->AppendObjectList(pPage, &matrix);
729
730         if (flags & FPDF_ANNOT) {
731                 pContext->m_pAnnots = new CPDF_AnnotList(pPage);
732                 FX_BOOL bPrinting = pContext->m_pDevice->GetDeviceClass() != FXDC_DISPLAY;
733                 pContext->m_pAnnots->DisplayAnnots(pPage, pContext->m_pContext, bPrinting, &matrix, TRUE, NULL);
734         }
735
736         pContext->m_pRenderer = new CPDF_ProgressiveRenderer;
737         pContext->m_pRenderer->Start(pContext->m_pContext, pContext->m_pDevice, pContext->m_pOptions, pause);
738         if (bNeedToRestore)
739         {
740           pContext->m_pDevice->RestoreState();
741         }
742 }
743
744 DLLEXPORT int STDCALL FPDF_GetPageSizeByIndex(FPDF_DOCUMENT document, int page_index, double* width, double* height)
745 {
746         CPDF_Document* pDoc = (CPDF_Document*)document;
747         if(pDoc == NULL)
748                 return FALSE;
749
750         CPDF_Dictionary* pDict = pDoc->GetPage(page_index);
751         if (pDict == NULL) return FALSE;
752
753         CPDF_Page page;
754         page.Load(pDoc, pDict);
755         *width = page.GetPageWidth();
756         *height = page.GetPageHeight();
757
758         return TRUE;
759 }
760
761 DLLEXPORT FPDF_BOOL STDCALL FPDF_VIEWERREF_GetPrintScaling(FPDF_DOCUMENT document)
762 {
763         CPDF_Document* pDoc = (CPDF_Document*)document;
764         if (!pDoc) return TRUE;
765         CPDF_ViewerPreferences viewRef(pDoc);
766         return viewRef.PrintScaling();
767 }
768
769 DLLEXPORT int STDCALL FPDF_VIEWERREF_GetNumCopies(FPDF_DOCUMENT document)
770 {
771     CPDF_Document* pDoc = (CPDF_Document*)document;
772     if (!pDoc) return 1;
773     CPDF_ViewerPreferences viewRef(pDoc);
774     return viewRef.NumCopies();
775 }
776
777 DLLEXPORT FPDF_PAGERANGE STDCALL FPDF_VIEWERREF_GetPrintPageRange(FPDF_DOCUMENT document)
778 {
779     CPDF_Document* pDoc = (CPDF_Document*)document;
780     if (!pDoc) return NULL;
781     CPDF_ViewerPreferences viewRef(pDoc);
782     return viewRef.PrintPageRange();
783 }
784
785 DLLEXPORT FPDF_DUPLEXTYPE STDCALL FPDF_VIEWERREF_GetDuplex(FPDF_DOCUMENT document)
786 {
787     CPDF_Document* pDoc = (CPDF_Document*)document;
788     if (!pDoc) return DuplexUndefined;
789     CPDF_ViewerPreferences viewRef(pDoc);
790     CFX_ByteString duplex = viewRef.Duplex();
791     if (FX_BSTRC("Simplex") == duplex)
792         return Simplex;
793     if (FX_BSTRC("DuplexFlipShortEdge") == duplex)
794         return DuplexFlipShortEdge;
795     if (FX_BSTRC("DuplexFlipLongEdge") == duplex)
796         return DuplexFlipLongEdge;
797     return DuplexUndefined;
798 }
799
800 DLLEXPORT FPDF_DWORD STDCALL FPDF_CountNamedDests(FPDF_DOCUMENT document)
801 {
802     if (!document) return 0;
803     CPDF_Document* pDoc = (CPDF_Document*)document;
804
805     CPDF_Dictionary* pRoot = pDoc->GetRoot();
806     if (!pRoot) return 0;
807
808     CPDF_NameTree nameTree(pDoc, FX_BSTRC("Dests"));
809     int count = nameTree.GetCount();
810     CPDF_Dictionary* pDest = pRoot->GetDict(FX_BSTRC("Dests"));
811     if (pDest)
812         count += pDest->GetCount();
813     return count;
814 }
815
816 DLLEXPORT FPDF_DEST STDCALL FPDF_GetNamedDestByName(FPDF_DOCUMENT document,FPDF_BYTESTRING name)
817 {
818         if (!document)
819                 return NULL;
820         if (!name || name[0] == 0) 
821                 return NULL;
822
823         CPDF_Document* pDoc = (CPDF_Document*)document;
824         CPDF_NameTree name_tree(pDoc, FX_BSTRC("Dests"));
825         return name_tree.LookupNamedDest(pDoc, name);
826 }
827
828 DLLEXPORT FPDF_DEST STDCALL FPDF_GetNamedDest(FPDF_DOCUMENT document, int index, void* buffer, long* buflen)
829 {
830     if (!buffer)
831         *buflen = 0;
832     if (!document || index < 0) return NULL;
833     CPDF_Document* pDoc = (CPDF_Document*)document;
834
835     CPDF_Dictionary* pRoot = pDoc->GetRoot();
836     if (!pRoot) return NULL;
837
838     CPDF_Object* pDestObj = NULL;
839     CFX_ByteString bsName;
840     CPDF_NameTree nameTree(pDoc, FX_BSTRC("Dests"));
841     int count = nameTree.GetCount();
842     if (index >= count) {
843         CPDF_Dictionary* pDest = pRoot->GetDict(FX_BSTRC("Dests"));
844         if (!pDest) return NULL;
845         if (index >= count + pDest->GetCount()) return NULL;
846         index -= count;
847         FX_POSITION pos = pDest->GetStartPos();
848         int i = 0;
849         while (pos) {
850             pDestObj = pDest->GetNextElement(pos, bsName);
851             if (!pDestObj) continue;
852             if (i == index) break;
853             i++;
854         }
855     } else {
856         pDestObj = nameTree.LookupValue(index, bsName);
857     }
858     if (!pDestObj) return NULL;
859     if (pDestObj->GetType() == PDFOBJ_DICTIONARY) {
860         pDestObj = ((CPDF_Dictionary*)pDestObj)->GetArray(FX_BSTRC("D"));
861         if (!pDestObj) return NULL;
862     }
863     if (pDestObj->GetType() != PDFOBJ_ARRAY) return NULL;
864     CFX_WideString wsName = PDF_DecodeText(bsName);
865     CFX_ByteString utf16Name = wsName.UTF16LE_Encode();
866     unsigned int len = utf16Name.GetLength();
867     if (!buffer) {
868         *buflen = len;
869     } else if (*buflen >= len) {
870         memcpy(buffer, utf16Name.c_str(), len);
871         *buflen = len;
872     } else {
873         *buflen = -1;
874     }
875     return (FPDF_DEST)pDestObj;
876 }