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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 "../../../include/fpdfapi/fpdf_render.h"
8 #include "../../../include/fpdfapi/fpdf_module.h"
9 #include "../fpdf_page/pageint.h"
10 #include "../../../include/fxge/fx_ge.h"
11 #include "../../../include/fxcodec/fx_codec.h"
12 #include "render_int.h"
CPDF_DocRenderData(CPDF_Document * pPDFDoc)13 CPDF_DocRenderData::CPDF_DocRenderData(CPDF_Document* pPDFDoc)
14     : m_pPDFDoc(pPDFDoc)
15     , m_pFontCache(NULL)
16 {
17 }
~CPDF_DocRenderData()18 CPDF_DocRenderData::~CPDF_DocRenderData()
19 {
20     Clear(TRUE);
21 }
Clear(FX_BOOL bRelease)22 void CPDF_DocRenderData::Clear(FX_BOOL bRelease)
23 {
24     FX_POSITION pos;
25     {
26         pos = m_Type3FaceMap.GetStartPosition();
27         while (pos) {
28             CPDF_Font* pFont;
29             CPDF_CountedObject<CPDF_Type3Cache*>* cache;
30             m_Type3FaceMap.GetNextAssoc(pos, pFont, cache);
31             if (bRelease || cache->m_nCount < 2) {
32                 delete cache->m_Obj;
33                 delete cache;
34                 m_Type3FaceMap.RemoveKey(pFont);
35             }
36         }
37     }
38 #ifndef _FPDFAPI_MINI_
39     {
40         pos = m_TransferFuncMap.GetStartPosition();
41         while (pos) {
42             CPDF_Object* key;
43             CPDF_CountedObject<CPDF_TransferFunc*>* value;
44             m_TransferFuncMap.GetNextAssoc(pos, key, value);
45             if (bRelease || value->m_nCount < 2) {
46                 delete value->m_Obj;
47                 delete value;
48                 m_TransferFuncMap.RemoveKey(key);
49             }
50         }
51     }
52 #endif
53     if (m_pFontCache) {
54         if (bRelease) {
55             delete m_pFontCache;
56             m_pFontCache = NULL;
57         } else {
58             m_pFontCache->FreeCache(FALSE);
59         }
60     }
61 }
Initialize()62 FX_BOOL CPDF_DocRenderData::Initialize()
63 {
64     m_pFontCache = FX_NEW CFX_FontCache;
65     return TRUE;
66 }
GetCachedType3(CPDF_Type3Font * pFont)67 CPDF_Type3Cache* CPDF_DocRenderData::GetCachedType3(CPDF_Type3Font* pFont)
68 {
69     CPDF_CountedObject<CPDF_Type3Cache*>* pCache;
70     if (!m_Type3FaceMap.Lookup(pFont, pCache)) {
71         CPDF_Type3Cache* pType3 = FX_NEW CPDF_Type3Cache(pFont);
72         pCache = FX_NEW CPDF_CountedObject<CPDF_Type3Cache*>;
73         pCache->m_Obj = pType3;
74         pCache->m_nCount = 1;
75         m_Type3FaceMap.SetAt(pFont, pCache);
76     }
77     pCache->m_nCount++;
78     return pCache->m_Obj;
79 }
ReleaseCachedType3(CPDF_Type3Font * pFont)80 void CPDF_DocRenderData::ReleaseCachedType3(CPDF_Type3Font* pFont)
81 {
82     CPDF_CountedObject<CPDF_Type3Cache*>* pCache;
83     if (!m_Type3FaceMap.Lookup(pFont, pCache)) {
84         return;
85     }
86     pCache->m_nCount--;
87 }
88 class CPDF_RenderModule : public CPDF_RenderModuleDef
89 {
90 public:
~CPDF_RenderModule()91     virtual ~CPDF_RenderModule() {}
Installed()92     virtual FX_BOOL	Installed()
93     {
94         return TRUE;
95     }
96     virtual CPDF_DocRenderData*	CreateDocData(CPDF_Document* pDoc);
97     virtual void	DestroyDocData(CPDF_DocRenderData* p);
98     virtual void	ClearDocData(CPDF_DocRenderData* p);
GetRenderData()99     virtual CPDF_DocRenderData* GetRenderData()
100     {
101         return &m_RenderData;
102     }
CreatePageCache(CPDF_Page * pPage)103     virtual CPDF_PageRenderCache*	CreatePageCache(CPDF_Page* pPage)
104     {
105         return FX_NEW CPDF_PageRenderCache(pPage);
106     }
107     virtual void	DestroyPageCache(CPDF_PageRenderCache* pCache);
GetConfig()108     virtual CPDF_RenderConfig*	GetConfig()
109     {
110         return &m_RenderConfig;
111     }
112 private:
113     CPDF_DocRenderData	m_RenderData;
114     CPDF_RenderConfig	m_RenderConfig;
115 };
CreateDocData(CPDF_Document * pDoc)116 CPDF_DocRenderData*	CPDF_RenderModule::CreateDocData(CPDF_Document* pDoc)
117 {
118     CPDF_DocRenderData* pData = FX_NEW CPDF_DocRenderData(pDoc);
119     pData->Initialize();
120     return pData;
121 }
DestroyDocData(CPDF_DocRenderData * pDocData)122 void CPDF_RenderModule::DestroyDocData(CPDF_DocRenderData* pDocData)
123 {
124     delete pDocData;
125 }
ClearDocData(CPDF_DocRenderData * p)126 void CPDF_RenderModule::ClearDocData(CPDF_DocRenderData* p)
127 {
128     if (p) {
129         p->Clear(FALSE);
130     }
131 }
DestroyPageCache(CPDF_PageRenderCache * pCache)132 void CPDF_RenderModule::DestroyPageCache(CPDF_PageRenderCache* pCache)
133 {
134     delete pCache;
135 }
InitRenderModule()136 void CPDF_ModuleMgr::InitRenderModule()
137 {
138     if (m_pRenderModule) {
139         delete m_pRenderModule;
140     }
141     m_pRenderModule = FX_NEW CPDF_RenderModule;
142 }
CPDF_RenderOptions()143 CPDF_RenderOptions::CPDF_RenderOptions()
144     : m_ColorMode(RENDER_COLOR_NORMAL)
145     , m_Flags(RENDER_CLEARTYPE)
146     , m_Interpolation(0)
147     , m_AddFlags(0)
148     , m_pOCContext(NULL)
149     , m_dwLimitCacheSize(1024 * 1024 * 100)
150     , m_HalftoneLimit(-1)
151 {
152 #if defined(_FPDFAPI_MINI_)
153     m_Flags |= RENDER_LIMITEDIMAGECACHE;
154 #endif
155 }
TranslateColor(FX_ARGB argb) const156 FX_ARGB CPDF_RenderOptions::TranslateColor(FX_ARGB argb) const
157 {
158     if (m_ColorMode == RENDER_COLOR_NORMAL) {
159         return argb;
160     }
161     if (m_ColorMode == RENDER_COLOR_ALPHA) {
162         return argb;
163     }
164     int a, r, g, b;
165     ArgbDecode(argb, a, r, g, b);
166     int gray = FXRGB2GRAY(r, g, b);
167     if (m_ColorMode == RENDER_COLOR_TWOCOLOR) {
168         int color = (r - gray) * (r - gray) + (g - gray) * (g - gray) + (b - gray) * (b - gray);
169         if (gray < 35 && color < 20) {
170             return ArgbEncode(a, m_ForeColor);
171         }
172         if (gray > 221 && color < 20) {
173             return ArgbEncode(a, m_BackColor);
174         }
175         return argb;
176     }
177     int fr = FXSYS_GetRValue(m_ForeColor);
178     int fg = FXSYS_GetGValue(m_ForeColor);
179     int fb = FXSYS_GetBValue(m_ForeColor);
180     int br = FXSYS_GetRValue(m_BackColor);
181     int bg = FXSYS_GetGValue(m_BackColor);
182     int bb = FXSYS_GetBValue(m_BackColor);
183     r = (br - fr) * gray / 255 + fr;
184     g = (bg - fg) * gray / 255 + fg;
185     b = (bb - fb) * gray / 255 + fb;
186     return ArgbEncode(a, r, g, b);
187 }
CPDF_RenderStatus()188 CPDF_RenderStatus::CPDF_RenderStatus()
189 {
190     m_pContext = NULL;
191     m_bStopped = FALSE;
192     m_Level = 0;
193     m_pDevice = NULL;
194     m_pCurObj = NULL;
195     m_pStopObj = NULL;
196     m_HalftoneLimit = 0;
197     m_pObjectRenderer = NULL;
198     m_bPrint = FALSE;
199     m_Transparency = 0;
200     m_DitherBits = 0;
201     m_bDropObjects = FALSE;
202     m_bStdCS = FALSE;
203     m_GroupFamily = 0;
204     m_bLoadMask = FALSE;
205     m_pType3Char = NULL;
206     m_T3FillColor = 0;
207     m_pFormResource = NULL;
208     m_pPageResource = NULL;
209     m_curBlend = FXDIB_BLEND_NORMAL;
210 }
~CPDF_RenderStatus()211 CPDF_RenderStatus::~CPDF_RenderStatus()
212 {
213     if (m_pObjectRenderer) {
214         delete m_pObjectRenderer;
215     }
216 }
Initialize(int level,CPDF_RenderContext * pContext,CFX_RenderDevice * pDevice,const CFX_AffineMatrix * pDeviceMatrix,const CPDF_PageObject * pStopObj,const CPDF_RenderStatus * pParentState,const CPDF_GraphicStates * pInitialStates,const CPDF_RenderOptions * pOptions,int transparency,FX_BOOL bDropObjects,CPDF_Dictionary * pFormResource,FX_BOOL bStdCS,CPDF_Type3Char * pType3Char,FX_ARGB fill_color,FX_DWORD GroupFamily,FX_BOOL bLoadMask)217 FX_BOOL CPDF_RenderStatus::Initialize(int level, CPDF_RenderContext* pContext, CFX_RenderDevice* pDevice,
218                                       const CFX_AffineMatrix* pDeviceMatrix, const CPDF_PageObject* pStopObj,
219                                       const CPDF_RenderStatus* pParentState, const CPDF_GraphicStates* pInitialStates,
220                                       const CPDF_RenderOptions* pOptions, int transparency, FX_BOOL bDropObjects,
221                                       CPDF_Dictionary* pFormResource, FX_BOOL bStdCS, CPDF_Type3Char* pType3Char,
222                                       FX_ARGB fill_color, FX_DWORD GroupFamily,
223                                       FX_BOOL bLoadMask)
224 {
225     m_Level = level;
226     m_pContext = pContext;
227     m_pDevice = pDevice;
228     m_DitherBits = pDevice->GetDeviceCaps(FXDC_DITHER_BITS);
229     m_bPrint = m_pDevice->GetDeviceClass() != FXDC_DISPLAY;
230     if (pDeviceMatrix) {
231         m_DeviceMatrix = *pDeviceMatrix;
232     }
233     m_pStopObj = pStopObj;
234     if (pOptions) {
235         m_Options = *pOptions;
236     }
237     m_bDropObjects = bDropObjects;
238     m_bStdCS = bStdCS;
239     m_T3FillColor = fill_color;
240     m_pType3Char = pType3Char;
241     m_GroupFamily = GroupFamily;
242     m_bLoadMask = bLoadMask;
243     m_pFormResource = pFormResource;
244     m_pPageResource = m_pContext->m_pPageResources;
245     if (pInitialStates && !m_pType3Char) {
246         m_InitialStates.CopyStates(*pInitialStates);
247         if (pParentState) {
248             CPDF_ColorStateData* pColorData = (CPDF_ColorStateData*)(const CPDF_ColorStateData*)m_InitialStates.m_ColorState;
249             CPDF_ColorStateData* pParentData = (CPDF_ColorStateData*)(const CPDF_ColorStateData*)pParentState->m_InitialStates.m_ColorState;
250             if (!pColorData || pColorData->m_FillColor.IsNull()) {
251                 CPDF_ColorStateData* pData = m_InitialStates.m_ColorState.GetModify();
252                 pData->m_FillRGB = pParentData->m_FillRGB;
253                 pData->m_FillColor.Copy(&pParentData->m_FillColor);
254             }
255             if (!pColorData || pColorData->m_StrokeColor.IsNull()) {
256                 CPDF_ColorStateData* pData = m_InitialStates.m_ColorState.GetModify();
257                 pData->m_StrokeRGB = pParentData->m_FillRGB;
258                 pData->m_StrokeColor.Copy(&pParentData->m_StrokeColor);
259             }
260         }
261     } else {
262         m_InitialStates.DefaultStates();
263     }
264 #if defined(_FPDFAPI_MINI_)||defined(_FXCORE_LIMITED_CPU_)
265     m_HalftoneLimit = CPDF_ModuleMgr::Get()->GetRenderModule()->GetConfig()->m_HalftoneLimit;
266     if (pOptions && pOptions->m_HalftoneLimit >= 0) {
267         m_HalftoneLimit = pOptions->m_HalftoneLimit;
268     }
269 #endif
270     m_pObjectRenderer = NULL;
271     m_Transparency = transparency;
272     return TRUE;
273 }
RenderObjectList(const CPDF_PageObjects * pObjs,const CFX_AffineMatrix * pObj2Device)274 void CPDF_RenderStatus::RenderObjectList(const CPDF_PageObjects* pObjs, const CFX_AffineMatrix* pObj2Device)
275 {
276     if (m_Level > 32) {
277         return;
278     }
279     CFX_FloatRect clip_rect = m_pDevice->GetClipBox();
280     CFX_AffineMatrix device2object;
281     device2object.SetReverse(*pObj2Device);
282     device2object.TransformRect(clip_rect);
283     int index = 0;
284     FX_POSITION pos = pObjs->GetFirstObjectPosition();
285     while(pos) {
286         index ++;
287         CPDF_PageObject* pCurObj = pObjs->GetNextObject(pos);
288         if (pCurObj == m_pStopObj) {
289             m_bStopped = TRUE;
290             return;
291         }
292         if (!pCurObj) {
293             continue;
294         }
295         if(pCurObj == NULL || pCurObj->m_Left > clip_rect.right || pCurObj->m_Right < clip_rect.left ||
296                 pCurObj->m_Bottom > clip_rect.top || pCurObj->m_Top < clip_rect.bottom) {
297             continue;
298         }
299         RenderSingleObject(pCurObj, pObj2Device);
300         if (m_bStopped) {
301             return;
302         }
303     }
304 }
RenderSingleObject(const CPDF_PageObject * pObj,const CFX_AffineMatrix * pObj2Device)305 void CPDF_RenderStatus::RenderSingleObject(const CPDF_PageObject* pObj, const CFX_AffineMatrix* pObj2Device)
306 {
307     if (m_Level > 32) {
308         return;
309     }
310     m_pCurObj = pObj;
311     if (m_Options.m_pOCContext && pObj->m_ContentMark.NotNull())
312         if (!m_Options.m_pOCContext->CheckObjectVisible(pObj)) {
313             return;
314         }
315     ProcessClipPath(pObj->m_ClipPath, pObj2Device);
316     if (ProcessTransparency(pObj, pObj2Device)) {
317         return;
318     }
319     ProcessObjectNoClip(pObj, pObj2Device);
320 }
ContinueSingleObject(const CPDF_PageObject * pObj,const CFX_AffineMatrix * pObj2Device,IFX_Pause * pPause)321 FX_BOOL CPDF_RenderStatus::ContinueSingleObject(const CPDF_PageObject* pObj, const CFX_AffineMatrix* pObj2Device, IFX_Pause* pPause)
322 {
323     if (m_pObjectRenderer) {
324         if (m_pObjectRenderer->Continue(pPause)) {
325             return TRUE;
326         }
327         if (!m_pObjectRenderer->m_Result) {
328             DrawObjWithBackground(pObj, pObj2Device);
329         }
330 #ifdef _FPDFAPI_MINI_
331         if (m_DitherBits) {
332             DitherObjectArea(pObj, pObj2Device);
333         }
334 #endif
335         delete m_pObjectRenderer;
336         m_pObjectRenderer = NULL;
337         return FALSE;
338     }
339     m_pCurObj = pObj;
340     if (m_Options.m_pOCContext && pObj->m_ContentMark.NotNull())
341         if (!m_Options.m_pOCContext->CheckObjectVisible(pObj)) {
342             return FALSE;
343         }
344     ProcessClipPath(pObj->m_ClipPath, pObj2Device);
345     if (ProcessTransparency(pObj, pObj2Device)) {
346         return FALSE;
347     }
348     if (pObj->m_Type == PDFPAGE_IMAGE) {
349         m_pObjectRenderer = IPDF_ObjectRenderer::Create(pObj->m_Type);
350         if (!m_pObjectRenderer->Start(this, pObj, pObj2Device, FALSE)) {
351             if (!m_pObjectRenderer->m_Result) {
352                 DrawObjWithBackground(pObj, pObj2Device);
353             }
354 #ifdef _FPDFAPI_MINI_
355             if (m_DitherBits) {
356                 DitherObjectArea(pObj, pObj2Device);
357             }
358 #endif
359             delete m_pObjectRenderer;
360             m_pObjectRenderer = NULL;
361             return FALSE;
362         }
363         return ContinueSingleObject(pObj, pObj2Device, pPause);
364     }
365     ProcessObjectNoClip(pObj, pObj2Device);
366     return FALSE;
367 }
Create(int type)368 IPDF_ObjectRenderer* IPDF_ObjectRenderer::Create(int type)
369 {
370     IPDF_ObjectRenderer* pRenderer = NULL;
371     if (type == PDFPAGE_IMAGE) {
372         pRenderer = FX_NEW CPDF_ImageRenderer;
373     }
374     return pRenderer;
375 }
GetObjectClippedRect(const CPDF_PageObject * pObj,const CFX_AffineMatrix * pObj2Device,FX_BOOL bLogical,FX_RECT & rect) const376 FX_BOOL CPDF_RenderStatus::GetObjectClippedRect(const CPDF_PageObject* pObj, const CFX_AffineMatrix* pObj2Device, FX_BOOL bLogical, FX_RECT &rect) const
377 {
378     rect = pObj->GetBBox(pObj2Device);
379     FX_RECT rtClip = m_pDevice->GetClipBox();
380     if (!bLogical) {
381         CFX_Matrix dCTM = m_pDevice->GetCTM();
382         FX_FLOAT a = FXSYS_fabs(dCTM.a);
383         FX_FLOAT d = FXSYS_fabs(dCTM.d);
384         if (a != 1.0f || d != 1.0f) {
385             rect.right = rect.left + (FX_INT32)FXSYS_ceil((FX_FLOAT)rect.Width() * a);
386             rect.bottom = rect.top + (FX_INT32)FXSYS_ceil((FX_FLOAT)rect.Height() * d);
387             rtClip.right = rtClip.left + (FX_INT32)FXSYS_ceil((FX_FLOAT)rtClip.Width() * a);
388             rtClip.bottom = rtClip.top + (FX_INT32)FXSYS_ceil((FX_FLOAT)rtClip.Height() * d);
389         }
390     }
391     rect.Intersect(rtClip);
392     return rect.IsEmpty();
393 }
DitherObjectArea(const CPDF_PageObject * pObj,const CFX_AffineMatrix * pObj2Device)394 void CPDF_RenderStatus::DitherObjectArea(const CPDF_PageObject* pObj, const CFX_AffineMatrix* pObj2Device)
395 {
396     CFX_DIBitmap* pBitmap = m_pDevice->GetBitmap();
397     if (pBitmap == NULL) {
398         return;
399     }
400     FX_RECT rect;
401     if (GetObjectClippedRect(pObj, pObj2Device, FALSE, rect)) {
402         return;
403     }
404     if (m_DitherBits == 2) {
405         static FX_ARGB pal[4] = {0, 85, 170, 255};
406         pBitmap->DitherFS(pal, 4, &rect);
407     } else if (m_DitherBits == 3) {
408         static FX_ARGB pal[8] = {0, 36, 73, 109, 146, 182, 219, 255};
409         pBitmap->DitherFS(pal, 8, &rect);
410     } else if (m_DitherBits == 4) {
411         static FX_ARGB pal[16] = {0, 17, 34, 51, 68, 85, 102, 119, 136, 153, 170, 187, 204, 221, 238, 255};
412         pBitmap->DitherFS(pal, 16, &rect);
413     }
414 }
ProcessObjectNoClip(const CPDF_PageObject * pObj,const CFX_AffineMatrix * pObj2Device)415 void CPDF_RenderStatus::ProcessObjectNoClip(const CPDF_PageObject* pObj, const CFX_AffineMatrix* pObj2Device)
416 {
417     FX_BOOL bRet = FALSE;
418     switch (pObj->m_Type) {
419         case PDFPAGE_TEXT:
420             bRet = ProcessText((CPDF_TextObject*)pObj, pObj2Device, NULL);
421             break;
422         case PDFPAGE_PATH:
423             bRet = ProcessPath((CPDF_PathObject*)pObj, pObj2Device);
424             break;
425         case PDFPAGE_IMAGE:
426             bRet = ProcessImage((CPDF_ImageObject*)pObj, pObj2Device);
427             break;
428         case PDFPAGE_SHADING:
429             bRet = ProcessShading((CPDF_ShadingObject*)pObj, pObj2Device);
430             break;
431         case PDFPAGE_FORM:
432             bRet = ProcessForm((CPDF_FormObject*)pObj, pObj2Device);
433             break;
434 #if defined(_FPDFAPI_MINI_)
435         case PDFPAGE_INLINES:
436             bRet = ProcessInlines((CPDF_InlineImages*)pObj, pObj2Device);
437             break;
438 #endif
439     }
440     if (!bRet) {
441         DrawObjWithBackground(pObj, pObj2Device);
442     }
443 }
DrawObjWithBlend(const CPDF_PageObject * pObj,const CFX_AffineMatrix * pObj2Device)444 FX_BOOL CPDF_RenderStatus::DrawObjWithBlend(const CPDF_PageObject* pObj, const CFX_AffineMatrix* pObj2Device)
445 {
446     FX_BOOL bRet = FALSE;
447     switch (pObj->m_Type) {
448         case PDFPAGE_PATH:
449             bRet = ProcessPath((CPDF_PathObject*)pObj, pObj2Device);
450             break;
451         case PDFPAGE_IMAGE:
452             bRet = ProcessImage((CPDF_ImageObject *)pObj, pObj2Device);
453             break;
454         case PDFPAGE_FORM:
455             bRet = ProcessForm((CPDF_FormObject*)pObj, pObj2Device);
456             break;
457     }
458     return bRet;
459 }
GetScaledMatrix(CFX_Matrix & matrix) const460 void CPDF_RenderStatus::GetScaledMatrix(CFX_Matrix &matrix) const
461 {
462     CFX_Matrix dCTM = m_pDevice->GetCTM();
463     matrix.a *= FXSYS_fabs(dCTM.a);
464     matrix.d *= FXSYS_fabs(dCTM.d);
465 }
DrawObjWithBackground(const CPDF_PageObject * pObj,const CFX_AffineMatrix * pObj2Device)466 void CPDF_RenderStatus::DrawObjWithBackground(const CPDF_PageObject* pObj, const CFX_AffineMatrix* pObj2Device)
467 {
468 #if !defined(_FPDFAPI_MINI_) || defined(_FXCORE_FEATURE_ALL_)
469     FX_RECT rect;
470     if (GetObjectClippedRect(pObj, pObj2Device, FALSE, rect)) {
471         return;
472     }
473     int res = 300;
474     if (pObj->m_Type == PDFPAGE_IMAGE && m_pDevice->GetDeviceCaps(FXDC_DEVICE_CLASS) == FXDC_PRINTER) {
475         res = 0;
476     }
477     CPDF_ScaledRenderBuffer buffer;
478     if (!buffer.Initialize(m_pContext, m_pDevice, &rect, pObj, &m_Options, res)) {
479         return;
480     }
481     CFX_AffineMatrix matrix = *pObj2Device;
482     matrix.Concat(*buffer.GetMatrix());
483     GetScaledMatrix(matrix);
484     CPDF_Dictionary* pFormResource = NULL;
485     if (pObj->m_Type == PDFPAGE_FORM) {
486         CPDF_FormObject* pFormObj = (CPDF_FormObject*)pObj;
487         if (pFormObj->m_pForm && pFormObj->m_pForm->m_pFormDict) {
488             pFormResource = pFormObj->m_pForm->m_pFormDict->GetDict(FX_BSTRC("Resources"));
489         }
490     }
491     CPDF_RenderStatus status;
492     status.Initialize(m_Level + 1, m_pContext, buffer.GetDevice(), buffer.GetMatrix(), NULL, NULL, NULL, &m_Options, m_Transparency, m_bDropObjects, pFormResource);
493     status.RenderSingleObject(pObj, &matrix);
494     buffer.OutputToDevice();
495 #endif
496 }
ProcessForm(CPDF_FormObject * pFormObj,const CFX_AffineMatrix * pObj2Device)497 FX_BOOL CPDF_RenderStatus::ProcessForm(CPDF_FormObject* pFormObj, const CFX_AffineMatrix* pObj2Device)
498 {
499     CPDF_Dictionary* pOC = pFormObj->m_pForm->m_pFormDict->GetDict(FX_BSTRC("OC"));
500     if (pOC && m_Options.m_pOCContext && !m_Options.m_pOCContext->CheckOCGVisible(pOC)) {
501         return TRUE;
502     }
503     CFX_AffineMatrix matrix = pFormObj->m_FormMatrix;
504     matrix.Concat(*pObj2Device);
505     CPDF_Dictionary* pResources = NULL;
506     if (pFormObj->m_pForm && pFormObj->m_pForm->m_pFormDict) {
507         pResources = pFormObj->m_pForm->m_pFormDict->GetDict(FX_BSTRC("Resources"));
508     }
509     CPDF_RenderStatus status;
510     status.Initialize(m_Level + 1, m_pContext, m_pDevice, NULL, m_pStopObj,
511                       this, pFormObj, &m_Options, m_Transparency, m_bDropObjects, pResources, TRUE);
512     status.m_curBlend = m_curBlend;
513     m_pDevice->SaveState();
514     status.RenderObjectList(pFormObj->m_pForm, &matrix);
515     m_bStopped = status.m_bStopped;
516     m_pDevice->RestoreState();
517     return TRUE;
518 }
IsAvailableMatrix(const CFX_AffineMatrix & matrix)519 FX_BOOL IsAvailableMatrix(const CFX_AffineMatrix& matrix)
520 {
521     if (matrix.a == 0 || matrix.d == 0) {
522         return matrix.b != 0 && matrix.c != 0;
523     }
524     if (matrix.b == 0 || matrix.c == 0) {
525         return matrix.a != 0 && matrix.d != 0;
526     }
527     return TRUE;
528 }
ProcessPath(CPDF_PathObject * pPathObj,const CFX_AffineMatrix * pObj2Device)529 FX_BOOL CPDF_RenderStatus::ProcessPath(CPDF_PathObject* pPathObj, const CFX_AffineMatrix* pObj2Device)
530 {
531     int FillType = pPathObj->m_FillType;
532     FX_BOOL bStroke = pPathObj->m_bStroke;
533     ProcessPathPattern(pPathObj, pObj2Device, FillType, bStroke);
534     if (FillType == 0 && !bStroke) {
535         return TRUE;
536     }
537     FX_DWORD fill_argb = 0;
538     if (FillType) {
539         fill_argb = GetFillArgb(pPathObj);
540     }
541     FX_DWORD stroke_argb = 0;
542     if (bStroke) {
543         stroke_argb = GetStrokeArgb(pPathObj);
544     }
545     CFX_AffineMatrix path_matrix = pPathObj->m_Matrix;
546     path_matrix.Concat(*pObj2Device);
547     if (!IsAvailableMatrix(path_matrix)) {
548         return TRUE;
549     }
550     if (FillType && (m_Options.m_Flags & RENDER_RECT_AA)) {
551         FillType |= FXFILL_RECT_AA;
552     }
553     if (m_Options.m_Flags & RENDER_FILL_FULLCOVER) {
554         FillType |= FXFILL_FULLCOVER;
555     }
556     if (m_Options.m_Flags & RENDER_NOPATHSMOOTH) {
557         FillType |= FXFILL_NOPATHSMOOTH;
558     }
559     if (bStroke) {
560         FillType |= FX_FILL_STROKE;
561     }
562 #if !defined(_FPDFAPI_MINI_) || defined(_FXCORE_FEATURE_ALL_)
563     const CPDF_GeneralStateData* pGeneralData = ((CPDF_PageObject*)pPathObj)->m_GeneralState;
564     if (pGeneralData && pGeneralData->m_StrokeAdjust) {
565         FillType |= FX_STROKE_ADJUST;
566     }
567 #endif
568     if (m_pType3Char) {
569         FillType |= FX_FILL_TEXT_MODE;
570     }
571     CFX_GraphStateData graphState(*pPathObj->m_GraphState);
572     if (m_Options.m_Flags & RENDER_THINLINE) {
573         graphState.m_LineWidth = 0;
574     }
575     return m_pDevice->DrawPath(pPathObj->m_Path, &path_matrix, &graphState, fill_argb, stroke_argb, FillType, 0, NULL, m_curBlend);
576 }
GetTransferFunc(CPDF_Object * pObj) const577 CPDF_TransferFunc* CPDF_RenderStatus::GetTransferFunc(CPDF_Object* pObj) const
578 {
579     ASSERT(pObj != NULL);
580     CPDF_DocRenderData* pDocCache = m_pContext->m_pDocument->GetRenderData();
581     if (!pDocCache) {
582         return NULL;
583     }
584     return pDocCache->GetTransferFunc(pObj);
585 }
GetFillArgb(const CPDF_PageObject * pObj,FX_BOOL bType3) const586 FX_ARGB CPDF_RenderStatus::GetFillArgb(const CPDF_PageObject* pObj, FX_BOOL bType3) const
587 {
588     CPDF_ColorStateData* pColorData = (CPDF_ColorStateData*)(const CPDF_ColorStateData*)pObj->m_ColorState;
589     if (m_pType3Char && !bType3 && (!m_pType3Char->m_bColored || (m_pType3Char->m_bColored && (!pColorData || pColorData->m_FillColor.IsNull())))) {
590         return m_T3FillColor;
591     } else if (!pColorData || pColorData->m_FillColor.IsNull()) {
592         pColorData = (CPDF_ColorStateData*)(const CPDF_ColorStateData*)m_InitialStates.m_ColorState;
593     }
594     FX_COLORREF rgb = pColorData->m_FillRGB;
595     if (rgb == (FX_DWORD) - 1) {
596         return 0;
597     }
598     const CPDF_GeneralStateData* pGeneralData = pObj->m_GeneralState;
599     int alpha;
600     if (pGeneralData) {
601         alpha = (FX_INT32)(pGeneralData->m_FillAlpha * 255);
602 #ifndef _FPDFAPI_MINI_
603         if (pGeneralData->m_pTR) {
604             if (!pGeneralData->m_pTransferFunc) {
605                 ((CPDF_GeneralStateData*)pGeneralData)->m_pTransferFunc = GetTransferFunc(pGeneralData->m_pTR);
606             }
607             if (pGeneralData->m_pTransferFunc) {
608                 rgb = pGeneralData->m_pTransferFunc->TranslateColor(rgb);
609             }
610         }
611 #endif
612     } else {
613         alpha = 255;
614     }
615     return m_Options.TranslateColor(ArgbEncode(alpha, rgb));
616 }
GetStrokeArgb(const CPDF_PageObject * pObj) const617 FX_ARGB CPDF_RenderStatus::GetStrokeArgb(const CPDF_PageObject* pObj) const
618 {
619     CPDF_ColorStateData* pColorData = (CPDF_ColorStateData*)(const CPDF_ColorStateData*)pObj->m_ColorState;
620     if (m_pType3Char && (!m_pType3Char->m_bColored || (m_pType3Char->m_bColored && (!pColorData || pColorData->m_StrokeColor.IsNull())))) {
621         return m_T3FillColor;
622     } else if (!pColorData || pColorData->m_StrokeColor.IsNull()) {
623         pColorData = (CPDF_ColorStateData*)(const CPDF_ColorStateData*)m_InitialStates.m_ColorState;
624     }
625     FX_COLORREF rgb = pColorData->m_StrokeRGB;
626     if (rgb == (FX_DWORD) - 1) {
627         return 0;
628     }
629     const CPDF_GeneralStateData* pGeneralData = pObj->m_GeneralState;
630     int alpha;
631     if (pGeneralData) {
632         alpha = (FX_INT32)(pGeneralData->m_StrokeAlpha * 255);
633 #ifndef _FPDFAPI_MINI_
634         if (pGeneralData->m_pTR) {
635             if (!pGeneralData->m_pTransferFunc) {
636                 ((CPDF_GeneralStateData*)pGeneralData)->m_pTransferFunc = GetTransferFunc(pGeneralData->m_pTR);
637             }
638             if (pGeneralData->m_pTransferFunc) {
639                 rgb = pGeneralData->m_pTransferFunc->TranslateColor(rgb);
640             }
641         }
642 #endif
643     } else {
644         alpha = 255;
645     }
646     return m_Options.TranslateColor(ArgbEncode(alpha, rgb));
647 }
ProcessClipPath(CPDF_ClipPath ClipPath,const CFX_AffineMatrix * pObj2Device)648 void CPDF_RenderStatus::ProcessClipPath(CPDF_ClipPath ClipPath, const CFX_AffineMatrix* pObj2Device)
649 {
650     if (ClipPath.IsNull()) {
651         if (m_LastClipPath.IsNull()) {
652             return;
653         }
654         m_pDevice->RestoreState(TRUE);
655         m_LastClipPath.SetNull();
656         return;
657     }
658     if (m_LastClipPath == ClipPath) {
659         return;
660     }
661     m_LastClipPath = ClipPath;
662     m_pDevice->RestoreState(TRUE);
663     int nClipPath = ClipPath.GetPathCount();
664     int i;
665     for (i = 0; i < nClipPath; i++) {
666         const CFX_PathData* pPathData = ClipPath.GetPath(i);
667         if (pPathData == NULL) {
668             continue;
669         }
670         if (pPathData->GetPointCount() == 0) {
671             CFX_PathData EmptyPath;
672             EmptyPath.AppendRect(-1, -1, 0, 0);
673             int fill_mode = FXFILL_WINDING;
674             m_pDevice->SetClip_PathFill(&EmptyPath, NULL, fill_mode);
675         } else {
676             int ClipType = ClipPath.GetClipType(i);
677             m_pDevice->SetClip_PathFill(pPathData, pObj2Device, ClipType);
678         }
679     }
680     int textcount = ClipPath.GetTextCount();
681     if (textcount == 0) {
682         return;
683     }
684     if (m_pDevice->GetDeviceClass() == FXDC_DISPLAY && !(m_pDevice->GetDeviceCaps(FXDC_RENDER_CAPS) & FXRC_SOFT_CLIP)) {
685         return;
686     }
687     CFX_PathData* pTextClippingPath = NULL;
688     for (i = 0; i < textcount; i ++) {
689         CPDF_TextObject* pText = ClipPath.GetText(i);
690         if (pText == NULL) {
691             if (pTextClippingPath) {
692                 int fill_mode = FXFILL_WINDING;
693                 if (m_Options.m_Flags & RENDER_NOTEXTSMOOTH) {
694                     fill_mode |= FXFILL_NOPATHSMOOTH;
695                 }
696                 m_pDevice->SetClip_PathFill(pTextClippingPath, NULL, fill_mode);
697                 delete pTextClippingPath;
698                 pTextClippingPath = NULL;
699             }
700         } else {
701             if (pTextClippingPath == NULL) {
702                 pTextClippingPath = FX_NEW CFX_PathData;
703             }
704             ProcessText(pText, pObj2Device, pTextClippingPath);
705         }
706     }
707     if (pTextClippingPath) {
708         delete pTextClippingPath;
709     }
710 }
DrawClipPath(CPDF_ClipPath ClipPath,const CFX_AffineMatrix * pObj2Device)711 void CPDF_RenderStatus::DrawClipPath(CPDF_ClipPath ClipPath, const CFX_AffineMatrix* pObj2Device)
712 {
713     if (ClipPath.IsNull()) {
714         return;
715     }
716     int fill_mode = 0;
717     if (m_Options.m_Flags & RENDER_NOPATHSMOOTH) {
718         fill_mode |= FXFILL_NOPATHSMOOTH;
719     }
720     int nClipPath = ClipPath.GetPathCount();
721     int i;
722     for (i = 0; i < nClipPath; i++) {
723         const CFX_PathData* pPathData = ClipPath.GetPath(i);
724         if (pPathData == NULL) {
725             continue;
726         }
727         CFX_GraphStateData stroke_state;
728         if (m_Options.m_Flags & RENDER_THINLINE) {
729             stroke_state.m_LineWidth = 0;
730         }
731         m_pDevice->DrawPath(pPathData, pObj2Device, &stroke_state, 0, 0xffff0000, fill_mode);
732     }
733 }
SelectClipPath(CPDF_PathObject * pPathObj,const CFX_AffineMatrix * pObj2Device,FX_BOOL bStroke)734 FX_BOOL CPDF_RenderStatus::SelectClipPath(CPDF_PathObject* pPathObj, const CFX_AffineMatrix* pObj2Device, FX_BOOL bStroke)
735 {
736     CFX_AffineMatrix path_matrix = pPathObj->m_Matrix;
737     path_matrix.Concat(*pObj2Device);
738     if (bStroke) {
739         CFX_GraphStateData graphState(*pPathObj->m_GraphState);
740         if (m_Options.m_Flags & RENDER_THINLINE) {
741             graphState.m_LineWidth = 0;
742         }
743         return m_pDevice->SetClip_PathStroke(pPathObj->m_Path, &path_matrix, &graphState);
744     }
745     int fill_mode = pPathObj->m_FillType;
746     if (m_Options.m_Flags & RENDER_NOPATHSMOOTH) {
747         fill_mode |= FXFILL_NOPATHSMOOTH;
748     }
749     return m_pDevice->SetClip_PathFill(pPathObj->m_Path, &path_matrix, fill_mode);
750 }
ProcessTransparency(const CPDF_PageObject * pPageObj,const CFX_AffineMatrix * pObj2Device)751 FX_BOOL CPDF_RenderStatus::ProcessTransparency(const CPDF_PageObject* pPageObj, const CFX_AffineMatrix* pObj2Device)
752 {
753     const CPDF_GeneralStateData* pGeneralState = pPageObj->m_GeneralState;
754     int blend_type = pGeneralState ? pGeneralState->m_BlendType : FXDIB_BLEND_NORMAL;
755     if (blend_type == FXDIB_BLEND_UNSUPPORTED) {
756         return TRUE;
757     }
758     CPDF_Dictionary* pSMaskDict = pGeneralState ? (CPDF_Dictionary*)pGeneralState->m_pSoftMask : NULL;
759     if (pSMaskDict) {
760         if (pPageObj->m_Type == PDFPAGE_IMAGE &&
761                 ((CPDF_ImageObject*)pPageObj)->m_pImage->GetDict()->KeyExist(FX_BSTRC("SMask"))) {
762             pSMaskDict = NULL;
763         }
764     }
765     CPDF_Dictionary* pFormResource = NULL;
766     FX_FLOAT group_alpha = 1.0f;
767     int Transparency = m_Transparency;
768     FX_BOOL bGroupTransparent = FALSE;
769     if (pPageObj->m_Type == PDFPAGE_FORM) {
770         CPDF_FormObject* pFormObj = (CPDF_FormObject*)pPageObj;
771         const CPDF_GeneralStateData *pStateData = pFormObj->m_GeneralState.GetObject();
772         if (pStateData) {
773             group_alpha = pStateData->m_FillAlpha;
774         }
775         Transparency = pFormObj->m_pForm->m_Transparency;
776         bGroupTransparent = Transparency & PDFTRANS_ISOLATED ? TRUE : FALSE;
777         if (pFormObj->m_pForm->m_pFormDict) {
778             pFormResource = pFormObj->m_pForm->m_pFormDict->GetDict("Resources");
779         }
780     }
781     FX_BOOL bTextClip = FALSE;
782     if (pPageObj->m_ClipPath.NotNull() && pPageObj->m_ClipPath.GetTextCount() &&
783             m_pDevice->GetDeviceClass() == FXDC_DISPLAY && !(m_pDevice->GetDeviceCaps(FXDC_RENDER_CAPS) & FXRC_SOFT_CLIP)) {
784         bTextClip = TRUE;
785     }
786     if ((m_Options.m_Flags & RENDER_OVERPRINT) && pPageObj->m_Type == PDFPAGE_IMAGE && pGeneralState && pGeneralState->m_FillOP && pGeneralState->m_StrokeOP) {
787         CPDF_Document* pDocument = NULL;
788         CPDF_Page* pPage = NULL;
789         if (m_pContext->m_pPageCache) {
790             pPage = m_pContext->m_pPageCache->GetPage();
791             pDocument = pPage->m_pDocument;
792         } else {
793             pDocument = ((CPDF_ImageObject*)pPageObj)->m_pImage->GetDocument();
794         }
795         CPDF_Dictionary* pPageResources = pPage ? pPage->m_pPageResources : NULL;
796         CPDF_Object* pCSObj = ((CPDF_ImageObject*)pPageObj)->m_pImage->GetStream()->GetDict()->GetElementValue(FX_BSTRC("ColorSpace"));
797         CPDF_ColorSpace* pColorSpace = pDocument->LoadColorSpace(pCSObj, pPageResources);
798         if (pColorSpace) {
799             int format = pColorSpace->GetFamily();
800             if (format == PDFCS_DEVICECMYK || format == PDFCS_SEPARATION || format == PDFCS_DEVICEN) {
801                 blend_type = FXDIB_BLEND_DARKEN;
802             }
803             pDocument->GetPageData()->ReleaseColorSpace(pCSObj);
804         }
805     }
806     if (pSMaskDict == NULL && group_alpha == 1.0f && blend_type == FXDIB_BLEND_NORMAL && !bTextClip && !bGroupTransparent) {
807         return FALSE;
808     }
809     FX_BOOL isolated = Transparency & PDFTRANS_ISOLATED;
810     if (m_bPrint) {
811         FX_BOOL bRet = FALSE;
812         int rendCaps = m_pDevice->GetRenderCaps();
813         if (!((Transparency & PDFTRANS_ISOLATED) || pSMaskDict || bTextClip) && (rendCaps & FXRC_BLEND_MODE)) {
814             int oldBlend = m_curBlend;
815             m_curBlend = blend_type;
816             bRet = DrawObjWithBlend(pPageObj, pObj2Device);
817             m_curBlend = oldBlend;
818         }
819         if (!bRet) {
820             DrawObjWithBackground(pPageObj, pObj2Device);
821         }
822         return TRUE;
823     }
824     FX_RECT rect = pPageObj->GetBBox(pObj2Device);
825     rect.Intersect(m_pDevice->GetClipBox());
826     if (rect.IsEmpty()) {
827         return TRUE;
828     }
829     CFX_Matrix deviceCTM = m_pDevice->GetCTM();
830     FX_FLOAT scaleX = FXSYS_abs(deviceCTM.a);
831     FX_FLOAT scaleY = FXSYS_abs(deviceCTM.d);
832     int width = FXSYS_round((FX_FLOAT)rect.Width() * scaleX);
833     int height = FXSYS_round((FX_FLOAT)rect.Height() * scaleY);
834     CFX_FxgeDevice bitmap_device;
835     CFX_DIBitmap* oriDevice = NULL;
836     if (!isolated && (m_pDevice->GetRenderCaps() & FXRC_GET_BITS)) {
837         oriDevice = FX_NEW CFX_DIBitmap;
838         if (!m_pDevice->CreateCompatibleBitmap(oriDevice, width, height)) {
839             return TRUE;
840         }
841         m_pDevice->GetDIBits(oriDevice, rect.left, rect.top);
842     }
843     if (!bitmap_device.Create(width, height, FXDIB_Argb, 0, oriDevice)) {
844         return TRUE;
845     }
846     CFX_DIBitmap* bitmap = bitmap_device.GetBitmap();
847     bitmap->Clear(0);
848     CFX_AffineMatrix new_matrix = *pObj2Device;
849     new_matrix.TranslateI(-rect.left, -rect.top);
850     new_matrix.Scale(scaleX, scaleY);
851     CFX_DIBitmap* pTextMask = NULL;
852     if (bTextClip) {
853         pTextMask = FX_NEW CFX_DIBitmap;
854         if (!pTextMask->Create(width, height, FXDIB_8bppMask)) {
855             delete pTextMask;
856             return TRUE;
857         }
858         pTextMask->Clear(0);
859         CFX_FxgeDevice text_device;
860         text_device.Attach(pTextMask);
861         for (FX_DWORD i = 0; i < pPageObj->m_ClipPath.GetTextCount(); i ++) {
862             CPDF_TextObject* textobj = pPageObj->m_ClipPath.GetText(i);
863             if (textobj == NULL) {
864                 break;
865             }
866             CFX_AffineMatrix text_matrix;
867             textobj->GetTextMatrix(&text_matrix);
868             CPDF_TextRenderer::DrawTextPath(&text_device, textobj->m_nChars, textobj->m_pCharCodes, textobj->m_pCharPos,
869                                             textobj->m_TextState.GetFont(), textobj->m_TextState.GetFontSize(),
870                                             &text_matrix, &new_matrix, textobj->m_GraphState, (FX_ARGB) - 1, 0, NULL);
871         }
872     }
873     CPDF_RenderStatus bitmap_render;
874     bitmap_render.Initialize(m_Level + 1, m_pContext, &bitmap_device, NULL,
875                              m_pStopObj, NULL, NULL, &m_Options, 0, m_bDropObjects, pFormResource, TRUE);
876     bitmap_render.ProcessObjectNoClip(pPageObj, &new_matrix);
877     m_bStopped = bitmap_render.m_bStopped;
878     if (pSMaskDict) {
879         CFX_AffineMatrix smask_matrix;
880         FXSYS_memcpy32(&smask_matrix, pGeneralState->m_SMaskMatrix, sizeof smask_matrix);
881         smask_matrix.Concat(*pObj2Device);
882         CFX_DIBSource* pSMaskSource = LoadSMask(pSMaskDict, &rect, &smask_matrix);
883         if (pSMaskSource) {
884             bitmap->MultiplyAlpha(pSMaskSource);
885             delete pSMaskSource;
886         }
887     }
888     if (pTextMask) {
889         bitmap->MultiplyAlpha(pTextMask);
890         delete pTextMask;
891         pTextMask = NULL;
892     }
893     if (Transparency & PDFTRANS_GROUP && group_alpha != 1.0f) {
894         bitmap->MultiplyAlpha((FX_INT32)(group_alpha * 255));
895     }
896     Transparency = m_Transparency;
897     if (pPageObj->m_Type == PDFPAGE_FORM) {
898         Transparency |= PDFTRANS_GROUP;
899     }
900     CompositeDIBitmap(bitmap, rect.left, rect.top, 0, 255, blend_type, Transparency);
901     if (oriDevice) {
902         delete oriDevice;
903     }
904     return TRUE;
905 }
GetBackdrop(const CPDF_PageObject * pObj,const FX_RECT & rect,int & left,int & top,FX_BOOL bBackAlphaRequired)906 CFX_DIBitmap* CPDF_RenderStatus::GetBackdrop(const CPDF_PageObject* pObj, const FX_RECT& rect, int& left, int& top,
907         FX_BOOL bBackAlphaRequired)
908 {
909     FX_RECT bbox = rect;
910     bbox.Intersect(m_pDevice->GetClipBox());
911     left = bbox.left;
912     top = bbox.top;
913     CFX_Matrix deviceCTM = m_pDevice->GetCTM();
914     FX_FLOAT scaleX = FXSYS_abs(deviceCTM.a);
915     FX_FLOAT scaleY = FXSYS_abs(deviceCTM.d);
916     int width = FXSYS_round(bbox.Width() * scaleX);
917     int height = FXSYS_round(bbox.Height() * scaleY);
918     CFX_DIBitmap* pBackdrop = FX_NEW CFX_DIBitmap;
919     if (bBackAlphaRequired && !m_bDropObjects) {
920         pBackdrop->Create(width, height, FXDIB_Argb);
921     } else {
922         m_pDevice->CreateCompatibleBitmap(pBackdrop, width, height);
923     }
924     if (pBackdrop->GetBuffer() == NULL) {
925         delete pBackdrop;
926         return NULL;
927     }
928     FX_BOOL bNeedDraw;
929     if (pBackdrop->HasAlpha()) {
930         bNeedDraw = !(m_pDevice->GetRenderCaps() & FXRC_ALPHA_OUTPUT);
931     } else {
932         bNeedDraw = !(m_pDevice->GetRenderCaps() & FXRC_GET_BITS);
933     }
934     if (!bNeedDraw) {
935         m_pDevice->GetDIBits(pBackdrop, left, top);
936         return pBackdrop;
937     }
938     CFX_AffineMatrix FinalMatrix = m_DeviceMatrix;
939     FinalMatrix.TranslateI(-left, -top);
940     FinalMatrix.Scale(scaleX, scaleY);
941     pBackdrop->Clear(pBackdrop->HasAlpha() ? 0 : 0xffffffff);
942     CFX_FxgeDevice device;
943     device.Attach(pBackdrop);
944     m_pContext->Render(&device, pObj, &m_Options, &FinalMatrix);
945     return pBackdrop;
946 }
GetBackground(CFX_DIBitmap * pBuffer,const CPDF_PageObject * pObj,const CPDF_RenderOptions * pOptions,CFX_AffineMatrix * pFinalMatrix)947 void CPDF_RenderContext::GetBackground(CFX_DIBitmap* pBuffer, const CPDF_PageObject* pObj,
948                                        const CPDF_RenderOptions* pOptions, CFX_AffineMatrix* pFinalMatrix)
949 {
950     CFX_FxgeDevice device;
951     device.Attach(pBuffer);
952     if (m_pBackgroundDraw) {
953         m_pBackgroundDraw->OnDrawBackground(&device, pFinalMatrix);
954     } else {
955         FX_RECT rect(0, 0, device.GetWidth(), device.GetHeight());
956         device.FillRect(&rect, 0xffffffff);
957     }
958     Render(&device, pObj, pOptions, pFinalMatrix);
959 }
CloneObjStates(const CPDF_GraphicStates * pSrcStates,FX_BOOL bStroke)960 CPDF_GraphicStates* CPDF_RenderStatus::CloneObjStates(const CPDF_GraphicStates* pSrcStates, FX_BOOL bStroke)
961 {
962     if (!pSrcStates) {
963         return NULL;
964     }
965     CPDF_GraphicStates* pStates = FX_NEW CPDF_GraphicStates;
966     if (!pStates) {
967         return NULL;
968     }
969     pStates->CopyStates(*pSrcStates);
970     CPDF_Color* pObjColor = bStroke ? pSrcStates->m_ColorState.GetStrokeColor() :
971                             pSrcStates->m_ColorState.GetFillColor();
972     if (!pObjColor->IsNull()) {
973         CPDF_ColorStateData* pColorData = pStates->m_ColorState.GetModify();
974         pColorData->m_FillRGB = bStroke ? pSrcStates->m_ColorState.GetObject()->m_StrokeRGB :
975                                 pSrcStates->m_ColorState.GetObject()->m_FillRGB;
976         pColorData->m_StrokeRGB = pColorData->m_FillRGB;
977     }
978     return pStates;
979 }
CPDF_RenderContext()980 CPDF_RenderContext::CPDF_RenderContext()
981 {
982 }
Create(CPDF_Document * pDoc,CPDF_PageRenderCache * pPageCache,CPDF_Dictionary * pPageResources,FX_BOOL bFirstLayer)983 void CPDF_RenderContext::Create(CPDF_Document* pDoc, CPDF_PageRenderCache* pPageCache,
984                                 CPDF_Dictionary* pPageResources, FX_BOOL bFirstLayer)
985 {
986     m_pBackgroundDraw = NULL;
987     m_pDocument = pDoc;
988     m_pPageResources = pPageResources;
989     m_pPageCache = pPageCache;
990     m_bFirstLayer = bFirstLayer;
991 }
Create(CPDF_Page * pPage,FX_BOOL bFirstLayer)992 void CPDF_RenderContext::Create(CPDF_Page* pPage, FX_BOOL bFirstLayer)
993 {
994     m_pBackgroundDraw = NULL;
995     m_pDocument = pPage->m_pDocument;
996     m_pPageResources = pPage->m_pPageResources;
997     m_pPageCache = pPage->GetRenderCache();
998     m_bFirstLayer = bFirstLayer;
999 }
~CPDF_RenderContext()1000 CPDF_RenderContext::~CPDF_RenderContext()
1001 {
1002 }
Clear()1003 void CPDF_RenderContext::Clear()
1004 {
1005     m_pDocument = NULL;
1006     m_pPageResources = NULL;
1007     m_pPageCache = NULL;
1008     m_pBackgroundDraw = NULL;
1009     m_bFirstLayer = TRUE;
1010     m_ContentList.RemoveAll();
1011 }
AppendObjectList(CPDF_PageObjects * pObjs,const CFX_AffineMatrix * pObject2Device)1012 void CPDF_RenderContext::AppendObjectList(CPDF_PageObjects* pObjs, const CFX_AffineMatrix* pObject2Device)
1013 {
1014     _PDF_RenderItem* pItem = m_ContentList.AddSpace();
1015     pItem->m_pObjectList = pObjs;
1016     if (pObject2Device) {
1017         pItem->m_Matrix = *pObject2Device;
1018     } else {
1019         pItem->m_Matrix.SetIdentity();
1020     }
1021 }
Render(CFX_RenderDevice * pDevice,const CPDF_RenderOptions * pOptions,const CFX_AffineMatrix * pLastMatrix)1022 void CPDF_RenderContext::Render(CFX_RenderDevice* pDevice, const CPDF_RenderOptions* pOptions,
1023                                 const CFX_AffineMatrix* pLastMatrix)
1024 {
1025     Render(pDevice, NULL, pOptions, pLastMatrix);
1026 }
Render(CFX_RenderDevice * pDevice,const CPDF_PageObject * pStopObj,const CPDF_RenderOptions * pOptions,const CFX_AffineMatrix * pLastMatrix)1027 void CPDF_RenderContext::Render(CFX_RenderDevice* pDevice, const CPDF_PageObject* pStopObj,
1028                                 const CPDF_RenderOptions* pOptions, const CFX_AffineMatrix* pLastMatrix)
1029 {
1030     int count = m_ContentList.GetSize();
1031     for (int j = 0; j < count; j ++) {
1032         pDevice->SaveState();
1033         _PDF_RenderItem* pItem = m_ContentList.GetDataPtr(j);
1034         if (pLastMatrix) {
1035             CFX_AffineMatrix FinalMatrix = pItem->m_Matrix;
1036             FinalMatrix.Concat(*pLastMatrix);
1037             CPDF_RenderStatus status;
1038             status.Initialize(0, this, pDevice, pLastMatrix, pStopObj, NULL, NULL, pOptions,
1039                               pItem->m_pObjectList->m_Transparency, FALSE, NULL);
1040             status.RenderObjectList(pItem->m_pObjectList, &FinalMatrix);
1041 #if !defined(_FPDFAPI_MINI_)
1042             if (status.m_Options.m_Flags & RENDER_LIMITEDIMAGECACHE) {
1043                 m_pPageCache->CacheOptimization(status.m_Options.m_dwLimitCacheSize);
1044             }
1045 #endif
1046             if (status.m_bStopped) {
1047                 pDevice->RestoreState();
1048                 break;
1049             }
1050         } else {
1051             CPDF_RenderStatus status;
1052             status.Initialize(0, this, pDevice, NULL, pStopObj, NULL, NULL, pOptions,
1053                               pItem->m_pObjectList->m_Transparency, FALSE, NULL);
1054             status.RenderObjectList(pItem->m_pObjectList, &pItem->m_Matrix);
1055 #if !defined(_FPDFAPI_MINI_)
1056             if (status.m_Options.m_Flags & RENDER_LIMITEDIMAGECACHE) {
1057                 m_pPageCache->CacheOptimization(status.m_Options.m_dwLimitCacheSize);
1058             }
1059 #endif
1060             if (status.m_bStopped) {
1061                 pDevice->RestoreState();
1062                 break;
1063             }
1064         }
1065         pDevice->RestoreState();
1066     }
1067 }
DrawObjectList(CFX_RenderDevice * pDevice,CPDF_PageObjects * pObjs,const CFX_AffineMatrix * pObject2Device,const CPDF_RenderOptions * pOptions)1068 void CPDF_RenderContext::DrawObjectList(CFX_RenderDevice* pDevice, CPDF_PageObjects* pObjs,
1069                                         const CFX_AffineMatrix* pObject2Device, const CPDF_RenderOptions* pOptions)
1070 {
1071     AppendObjectList(pObjs, pObject2Device);
1072     Render(pDevice, pOptions);
1073 }
CPDF_ProgressiveRenderer()1074 CPDF_ProgressiveRenderer::CPDF_ProgressiveRenderer()
1075 {
1076     m_pRenderer = NULL;
1077     m_pContext = NULL;
1078     m_pDevice = NULL;
1079     m_Status = Ready;
1080 }
~CPDF_ProgressiveRenderer()1081 CPDF_ProgressiveRenderer::~CPDF_ProgressiveRenderer()
1082 {
1083     Clear();
1084 }
Clear()1085 void CPDF_ProgressiveRenderer::Clear()
1086 {
1087     if (m_pRenderer) {
1088         delete m_pRenderer;
1089         m_pDevice->RestoreState();
1090         m_pRenderer = NULL;
1091     }
1092     m_Status = Ready;
1093 }
Start(CPDF_RenderContext * pContext,CFX_RenderDevice * pDevice,const CPDF_RenderOptions * pOptions,IFX_Pause * pPause,FX_BOOL bDropObjects)1094 void CPDF_ProgressiveRenderer::Start(CPDF_RenderContext* pContext, CFX_RenderDevice* pDevice,
1095                                      const CPDF_RenderOptions* pOptions, IFX_Pause* pPause, FX_BOOL bDropObjects)
1096 {
1097     if (m_Status != Ready) {
1098         m_Status = Failed;
1099         return;
1100     }
1101     m_pContext = pContext;
1102     m_pDevice = pDevice;
1103     m_pOptions = pOptions;
1104     m_bDropObjects = bDropObjects;
1105     if (pContext == NULL || pDevice == NULL) {
1106         m_Status = Failed;
1107         return;
1108     }
1109     m_Status = ToBeContinued;
1110     m_ObjectPos = NULL;
1111     m_LayerIndex = 0;
1112     m_ObjectIndex = 0;
1113     m_PrevLastPos = NULL;
1114     Continue(pPause);
1115 }
1116 #ifdef _FPDFAPI_MINI_
1117 #define RENDER_STEP_LIMIT 20
1118 #else
1119 #define RENDER_STEP_LIMIT 100
1120 #endif
Continue(IFX_Pause * pPause)1121 void CPDF_ProgressiveRenderer::Continue(IFX_Pause* pPause)
1122 {
1123     if (m_Status != ToBeContinued) {
1124         return;
1125     }
1126     FX_DWORD nLayers = m_pContext->m_ContentList.GetSize();
1127     for (; m_LayerIndex < nLayers; m_LayerIndex ++) {
1128         _PDF_RenderItem* pItem = m_pContext->m_ContentList.GetDataPtr(m_LayerIndex);
1129         FX_POSITION LastPos = pItem->m_pObjectList->GetLastObjectPosition();
1130         if (m_ObjectPos == NULL) {
1131             if (LastPos == m_PrevLastPos) {
1132                 if (!pItem->m_pObjectList->IsParsed()) {
1133                     pItem->m_pObjectList->ContinueParse(pPause);
1134                     if (!pItem->m_pObjectList->IsParsed()) {
1135                         return;
1136                     }
1137                     LastPos = pItem->m_pObjectList->GetLastObjectPosition();
1138                 }
1139             }
1140             if (LastPos == m_PrevLastPos) {
1141                 if (m_pRenderer) {
1142                     delete m_pRenderer;
1143                     m_pRenderer = NULL;
1144                     m_pDevice->RestoreState();
1145                     m_ObjectPos = NULL;
1146                     m_PrevLastPos = NULL;
1147                 }
1148                 continue;
1149             }
1150             if (m_PrevLastPos) {
1151                 m_ObjectPos = m_PrevLastPos;
1152                 pItem->m_pObjectList->GetNextObject(m_ObjectPos);
1153             } else {
1154                 m_ObjectPos = pItem->m_pObjectList->GetFirstObjectPosition();
1155             }
1156             m_PrevLastPos = LastPos;
1157         }
1158         if (m_pRenderer == NULL) {
1159             m_ObjectPos = pItem->m_pObjectList->GetFirstObjectPosition();
1160             m_ObjectIndex = 0;
1161             m_pRenderer = FX_NEW CPDF_RenderStatus();
1162             m_pRenderer->Initialize(0, m_pContext, m_pDevice, NULL, NULL, NULL, NULL,
1163                                     m_pOptions, pItem->m_pObjectList->m_Transparency, m_bDropObjects, NULL);
1164             m_pDevice->SaveState();
1165             m_ClipRect = m_pDevice->GetClipBox();
1166             CFX_AffineMatrix device2object;
1167             device2object.SetReverse(pItem->m_Matrix);
1168             device2object.TransformRect(m_ClipRect);
1169         }
1170         int objs_to_go = CPDF_ModuleMgr::Get()->GetRenderModule()->GetConfig()->m_RenderStepLimit;
1171         while (m_ObjectPos) {
1172             CPDF_PageObject* pCurObj = pItem->m_pObjectList->GetObjectAt(m_ObjectPos);
1173             if (pCurObj && pCurObj->m_Left <= m_ClipRect.right && pCurObj->m_Right >= m_ClipRect.left &&
1174                     pCurObj->m_Bottom <= m_ClipRect.top && pCurObj->m_Top >= m_ClipRect.bottom) {
1175                 if (m_pRenderer->ContinueSingleObject(pCurObj, &pItem->m_Matrix, pPause)) {
1176                     return;
1177                 }
1178 #if !defined(_FPDFAPI_MINI_)
1179                 if (pCurObj->m_Type == PDFPAGE_IMAGE && m_pRenderer->m_Options.m_Flags & RENDER_LIMITEDIMAGECACHE) {
1180                     m_pContext->GetPageCache()->CacheOptimization(m_pRenderer->m_Options.m_dwLimitCacheSize);
1181                 }
1182 #endif
1183                 if (pCurObj->m_Type == PDFPAGE_FORM || pCurObj->m_Type == PDFPAGE_SHADING) {
1184                     objs_to_go = 0;
1185                 } else {
1186                     objs_to_go --;
1187                 }
1188             }
1189             m_ObjectIndex ++;
1190             pItem->m_pObjectList->GetNextObject(m_ObjectPos);
1191             if (objs_to_go == 0) {
1192                 if (pPause && pPause->NeedToPauseNow()) {
1193                     return;
1194                 }
1195                 objs_to_go = CPDF_ModuleMgr::Get()->GetRenderModule()->GetConfig()->m_RenderStepLimit;
1196             }
1197         }
1198         if (!pItem->m_pObjectList->IsParsed()) {
1199             return;
1200         }
1201         delete m_pRenderer;
1202         m_pRenderer = NULL;
1203         m_pDevice->RestoreState();
1204         m_ObjectPos = NULL;
1205         m_PrevLastPos = NULL;
1206         if (pPause && pPause->NeedToPauseNow()) {
1207             m_LayerIndex++;
1208             return;
1209         }
1210     }
1211     m_Status = Done;
1212 }
EstimateProgress()1213 int CPDF_ProgressiveRenderer::EstimateProgress()
1214 {
1215     if (!m_pContext) {
1216         return 0;
1217     }
1218     FX_DWORD nLayers = m_pContext->m_ContentList.GetSize();
1219     int nTotal = 0, nRendered = 0;
1220     for (FX_DWORD layer = 0; layer < nLayers; layer ++) {
1221         _PDF_RenderItem* pItem = m_pContext->m_ContentList.GetDataPtr(layer);
1222         int nObjs = pItem->m_pObjectList->CountObjects();
1223         if (layer == m_LayerIndex) {
1224             nRendered += m_ObjectIndex;
1225         } else if (layer < m_LayerIndex) {
1226             nRendered += nObjs;
1227         }
1228         nTotal += nObjs;
1229     }
1230     if (nTotal == 0) {
1231         return 0;
1232     }
1233     return 100 * nRendered / nTotal;
1234 }
GetTransferFunc(CPDF_Object * pObj)1235 CPDF_TransferFunc* CPDF_DocRenderData::GetTransferFunc(CPDF_Object* pObj)
1236 {
1237     if (pObj == NULL) {
1238         return NULL;
1239     }
1240     CPDF_CountedObject<CPDF_TransferFunc*>* pTransferCounter;
1241     if (!m_TransferFuncMap.Lookup(pObj, pTransferCounter)) {
1242         CPDF_TransferFunc* pTransfer = NULL;
1243         CPDF_Function* pFuncs[3] = {NULL, NULL, NULL};
1244         FX_BOOL bUniTransfer = TRUE;
1245         int i;
1246         FX_BOOL bIdentity = TRUE;
1247         if (pObj->GetType() == PDFOBJ_ARRAY) {
1248             bUniTransfer = FALSE;
1249             CPDF_Array* pArray = (CPDF_Array*)pObj;
1250             if (pArray->GetCount() < 3) {
1251                 return NULL;
1252             }
1253             for (FX_DWORD i = 0; i < 3; i ++) {
1254                 pFuncs[2 - i] = CPDF_Function::Load(pArray->GetElementValue(i));
1255                 if (pFuncs[2 - i] == NULL) {
1256                     return NULL;
1257                 }
1258             }
1259         } else {
1260             pFuncs[0] = CPDF_Function::Load(pObj);
1261             if (pFuncs[0] == NULL) {
1262                 return NULL;
1263             }
1264         }
1265         pTransfer = FX_NEW CPDF_TransferFunc;
1266         pTransfer->m_pPDFDoc = m_pPDFDoc;
1267         pTransferCounter = FX_NEW CPDF_CountedObject<CPDF_TransferFunc*>;
1268         pTransferCounter->m_nCount = 1;
1269         pTransferCounter->m_Obj = pTransfer;
1270         m_TransferFuncMap.SetAt(pObj, pTransferCounter);
1271         static const int kMaxOutputs = 16;
1272         FX_FLOAT output[kMaxOutputs];
1273         FXSYS_memset32(output, 0, sizeof(output));
1274         FX_FLOAT input;
1275         int noutput;
1276         for (int v = 0; v < 256; v ++) {
1277             input = (FX_FLOAT)v / 255.0f;
1278             if (bUniTransfer) {
1279                 if (pFuncs[0] && pFuncs[0]->CountOutputs() <= kMaxOutputs) {
1280                     pFuncs[0]->Call(&input, 1, output, noutput);
1281                 }
1282                 int o = FXSYS_round(output[0] * 255);
1283                 if (o != v) {
1284                     bIdentity = FALSE;
1285                 }
1286                 for (i = 0; i < 3; i ++) {
1287                     pTransfer->m_Samples[i * 256 + v] = o;
1288                 }
1289             } else
1290                 for (i = 0; i < 3; i ++) {
1291                     if (pFuncs[i] && pFuncs[i]->CountOutputs() <= kMaxOutputs) {
1292                         pFuncs[i]->Call(&input, 1, output, noutput);
1293                         int o = FXSYS_round(output[0] * 255);
1294                         if (o != v) {
1295                             bIdentity = FALSE;
1296                         }
1297                         pTransfer->m_Samples[i * 256 + v] = o;
1298                     } else {
1299                         pTransfer->m_Samples[i * 256 + v] = v;
1300                     }
1301                 }
1302         }
1303         for (i = 0; i < 3; i ++)
1304             if (pFuncs[i]) {
1305                 delete pFuncs[i];
1306             }
1307         pTransfer->m_bIdentity = bIdentity;
1308     }
1309     pTransferCounter->m_nCount++;
1310     return pTransferCounter->m_Obj;
1311 }
ReleaseTransferFunc(CPDF_Object * pObj)1312 void CPDF_DocRenderData::ReleaseTransferFunc(CPDF_Object* pObj)
1313 {
1314     CPDF_CountedObject<CPDF_TransferFunc*>* pTransferCounter;
1315     if (!m_TransferFuncMap.Lookup(pObj, pTransferCounter)) {
1316         return;
1317     }
1318     pTransferCounter->m_nCount--;
1319 }
CPDF_RenderConfig()1320 CPDF_RenderConfig::CPDF_RenderConfig()
1321 {
1322     m_HalftoneLimit = 0;
1323 #ifdef _FPDFAPI_MINI_
1324     m_RenderStepLimit = 20;
1325 #else
1326     m_RenderStepLimit = 100;
1327 #endif
1328 }
~CPDF_RenderConfig()1329 CPDF_RenderConfig::~CPDF_RenderConfig()
1330 {
1331 }
CPDF_DeviceBuffer()1332 CPDF_DeviceBuffer::CPDF_DeviceBuffer()
1333 {
1334     m_pBitmap = NULL;
1335     m_pDevice = NULL;
1336     m_pContext = NULL;
1337     m_pObject = NULL;
1338 }
~CPDF_DeviceBuffer()1339 CPDF_DeviceBuffer::~CPDF_DeviceBuffer()
1340 {
1341     if (m_pBitmap) {
1342         delete m_pBitmap;
1343     }
1344 }
Initialize(CPDF_RenderContext * pContext,CFX_RenderDevice * pDevice,FX_RECT * pRect,const CPDF_PageObject * pObj,int max_dpi)1345 FX_BOOL CPDF_DeviceBuffer::Initialize(CPDF_RenderContext* pContext, CFX_RenderDevice* pDevice, FX_RECT* pRect,
1346                                       const CPDF_PageObject* pObj, int max_dpi)
1347 {
1348     m_pDevice = pDevice;
1349     m_pContext = pContext;
1350     m_Rect = *pRect;
1351     m_pObject = pObj;
1352     m_Matrix.TranslateI(-pRect->left, -pRect->top);
1353 #if _FXM_PLATFORM_ != _FXM_PLATFORM_APPLE_
1354     int horz_size = pDevice->GetDeviceCaps(FXDC_HORZ_SIZE);
1355     int vert_size = pDevice->GetDeviceCaps(FXDC_VERT_SIZE);
1356     if (horz_size && vert_size && max_dpi) {
1357         int dpih = pDevice->GetDeviceCaps(FXDC_PIXEL_WIDTH) * 254 / (horz_size * 10);
1358         int dpiv = pDevice->GetDeviceCaps(FXDC_PIXEL_HEIGHT) * 254 / (vert_size * 10);
1359         if (dpih > max_dpi) {
1360             m_Matrix.Scale((FX_FLOAT)(max_dpi) / dpih, 1.0f);
1361         }
1362         if (dpiv > max_dpi) {
1363             m_Matrix.Scale(1.0f, (FX_FLOAT)(max_dpi) / (FX_FLOAT)dpiv);
1364         }
1365     }
1366 #ifdef _FPDFAPI_MINI_
1367     m_Matrix.Scale(0.5f, 0.5f);
1368 #endif
1369 #endif
1370     CFX_Matrix ctm = m_pDevice->GetCTM();
1371     FX_FLOAT fScaleX = FXSYS_fabs(ctm.a);
1372     FX_FLOAT fScaleY = FXSYS_fabs(ctm.d);
1373     m_Matrix.Concat(fScaleX, 0, 0, fScaleY, 0, 0);
1374     CFX_FloatRect rect(*pRect);
1375     m_Matrix.TransformRect(rect);
1376     FX_RECT bitmap_rect = rect.GetOutterRect();
1377     m_pBitmap = FX_NEW CFX_DIBitmap;
1378     m_pBitmap->Create(bitmap_rect.Width(), bitmap_rect.Height(), FXDIB_Argb);
1379     return TRUE;
1380 }
OutputToDevice()1381 void CPDF_DeviceBuffer::OutputToDevice()
1382 {
1383     if (m_pDevice->GetDeviceCaps(FXDC_RENDER_CAPS) & FXRC_GET_BITS) {
1384         if (m_Matrix.a == 1.0f && m_Matrix.d == 1.0f) {
1385             m_pDevice->SetDIBits(m_pBitmap, m_Rect.left, m_Rect.top);
1386         } else {
1387             m_pDevice->StretchDIBits(m_pBitmap, m_Rect.left, m_Rect.top, m_Rect.Width(), m_Rect.Height());
1388         }
1389     } else {
1390 #if !defined(_FPDFAPI_MINI_) || defined(_FXCORE_FEATURE_ALL_)
1391         CFX_DIBitmap buffer;
1392         m_pDevice->CreateCompatibleBitmap(&buffer, m_pBitmap->GetWidth(), m_pBitmap->GetHeight());
1393         m_pContext->GetBackground(&buffer, m_pObject, NULL, &m_Matrix);
1394         buffer.CompositeBitmap(0, 0, buffer.GetWidth(), buffer.GetHeight(), m_pBitmap, 0, 0);
1395         m_pDevice->StretchDIBits(&buffer, m_Rect.left, m_Rect.top, m_Rect.Width(), m_Rect.Height());
1396 #endif
1397     }
1398 }
CPDF_ScaledRenderBuffer()1399 CPDF_ScaledRenderBuffer::CPDF_ScaledRenderBuffer()
1400 {
1401     m_pBitmapDevice = NULL;
1402 }
~CPDF_ScaledRenderBuffer()1403 CPDF_ScaledRenderBuffer::~CPDF_ScaledRenderBuffer()
1404 {
1405     if (m_pBitmapDevice) {
1406         delete m_pBitmapDevice;
1407     }
1408 }
1409 #ifndef _FPDFAPI_MINI_
1410 #define _FPDFAPI_IMAGESIZE_LIMIT_	(30 * 1024 * 1024)
1411 #else
1412 #define _FPDFAPI_IMAGESIZE_LIMIT_	(10 * 1024 * 1024)
1413 #endif
Initialize(CPDF_RenderContext * pContext,CFX_RenderDevice * pDevice,FX_RECT * pRect,const CPDF_PageObject * pObj,const CPDF_RenderOptions * pOptions,int max_dpi)1414 FX_BOOL CPDF_ScaledRenderBuffer::Initialize(CPDF_RenderContext* pContext, CFX_RenderDevice* pDevice, FX_RECT* pRect,
1415         const CPDF_PageObject* pObj, const CPDF_RenderOptions *pOptions, int max_dpi)
1416 {
1417     FXSYS_assert(pRect != NULL);
1418     m_pDevice = pDevice;
1419     if (m_pDevice->GetDeviceCaps(FXDC_RENDER_CAPS) & FXRC_GET_BITS) {
1420         return TRUE;
1421     }
1422     m_pContext = pContext;
1423     m_Rect = *pRect;
1424     m_pObject = pObj;
1425     m_Matrix.TranslateI(-pRect->left, -pRect->top);
1426     int horz_size = pDevice->GetDeviceCaps(FXDC_HORZ_SIZE);
1427     int vert_size = pDevice->GetDeviceCaps(FXDC_VERT_SIZE);
1428     if (horz_size && vert_size && max_dpi) {
1429         int dpih = pDevice->GetDeviceCaps(FXDC_PIXEL_WIDTH) * 254 / (horz_size * 10);
1430         int dpiv = pDevice->GetDeviceCaps(FXDC_PIXEL_HEIGHT) * 254 / (vert_size * 10);
1431         if (dpih > max_dpi) {
1432             m_Matrix.Scale((FX_FLOAT)(max_dpi) / dpih, 1.0f);
1433         }
1434         if (dpiv > max_dpi) {
1435             m_Matrix.Scale(1.0f, (FX_FLOAT)(max_dpi) / (FX_FLOAT)dpiv);
1436         }
1437     }
1438     m_pBitmapDevice = FX_NEW CFX_FxgeDevice;
1439     FXDIB_Format dibFormat = FXDIB_Rgb;
1440     FX_INT32 bpp = 24;
1441     if (m_pDevice->GetDeviceCaps(FXDC_RENDER_CAPS) & FXRC_ALPHA_OUTPUT) {
1442         dibFormat = FXDIB_Argb;
1443         bpp = 32;
1444     }
1445     CFX_FloatRect rect;
1446     FX_INT32 iWidth, iHeight, iPitch;
1447     while (1) {
1448         rect = *pRect;
1449         m_Matrix.TransformRect(rect);
1450         FX_RECT bitmap_rect = rect.GetOutterRect();
1451         iWidth = bitmap_rect.Width();
1452         iHeight = bitmap_rect.Height();
1453         iPitch = (iWidth * bpp + 31) / 32 * 4;
1454         if (iWidth * iHeight < 1) {
1455             return FALSE;
1456         }
1457         if (iPitch * iHeight <= _FPDFAPI_IMAGESIZE_LIMIT_ &&
1458                 m_pBitmapDevice->Create(iWidth, iHeight, dibFormat)) {
1459             break;
1460         }
1461         m_Matrix.Scale(0.5f, 0.5f);
1462     }
1463 #if  !defined(_FPDFAPI_MINI_) || defined(_FXCORE_FEATURE_ALL_)
1464     m_pContext->GetBackground(m_pBitmapDevice->GetBitmap(), m_pObject, pOptions, &m_Matrix);
1465 #endif
1466     return TRUE;
1467 }
OutputToDevice()1468 void CPDF_ScaledRenderBuffer::OutputToDevice()
1469 {
1470     if (m_pBitmapDevice) {
1471         m_pDevice->StretchDIBits(m_pBitmapDevice->GetBitmap(), m_Rect.left, m_Rect.top, m_Rect.Width(), m_Rect.Height());
1472     }
1473 }
CheckObjectVisible(const CPDF_PageObject * pObj)1474 FX_BOOL IPDF_OCContext::CheckObjectVisible(const CPDF_PageObject* pObj)
1475 {
1476     const CPDF_ContentMarkData* pData = pObj->m_ContentMark;
1477     int nItems = pData->CountItems();
1478     for (int i = 0; i < nItems; i ++) {
1479         CPDF_ContentMarkItem& item = pData->GetItem(i);
1480         if (item.GetName() == FX_BSTRC("OC") && item.GetParamType() == CPDF_ContentMarkItem::PropertiesDict) {
1481             CPDF_Dictionary* pOCG = (CPDF_Dictionary*)item.GetParam();
1482             if (!CheckOCGVisible(pOCG)) {
1483                 return FALSE;
1484             }
1485         }
1486     }
1487     return TRUE;
1488 }
1489