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     {
39         pos = m_TransferFuncMap.GetStartPosition();
40         while (pos) {
41             CPDF_Object* key;
42             CPDF_CountedObject<CPDF_TransferFunc*>* value;
43             m_TransferFuncMap.GetNextAssoc(pos, key, value);
44             if (bRelease || value->m_nCount < 2) {
45                 delete value->m_Obj;
46                 delete value;
47                 m_TransferFuncMap.RemoveKey(key);
48             }
49         }
50     }
51     if (m_pFontCache) {
52         if (bRelease) {
53             delete m_pFontCache;
54             m_pFontCache = NULL;
55         } else {
56             m_pFontCache->FreeCache(FALSE);
57         }
58     }
59 }
Initialize()60 FX_BOOL CPDF_DocRenderData::Initialize()
61 {
62     m_pFontCache = new CFX_FontCache;
63     return TRUE;
64 }
GetCachedType3(CPDF_Type3Font * pFont)65 CPDF_Type3Cache* CPDF_DocRenderData::GetCachedType3(CPDF_Type3Font* pFont)
66 {
67     CPDF_CountedObject<CPDF_Type3Cache*>* pCache;
68     if (!m_Type3FaceMap.Lookup(pFont, pCache)) {
69         CPDF_Type3Cache* pType3 = new CPDF_Type3Cache(pFont);
70         pCache = new CPDF_CountedObject<CPDF_Type3Cache*>;
71         pCache->m_Obj = pType3;
72         pCache->m_nCount = 1;
73         m_Type3FaceMap.SetAt(pFont, pCache);
74     }
75     pCache->m_nCount++;
76     return pCache->m_Obj;
77 }
ReleaseCachedType3(CPDF_Type3Font * pFont)78 void CPDF_DocRenderData::ReleaseCachedType3(CPDF_Type3Font* pFont)
79 {
80     CPDF_CountedObject<CPDF_Type3Cache*>* pCache;
81     if (!m_Type3FaceMap.Lookup(pFont, pCache)) {
82         return;
83     }
84     pCache->m_nCount--;
85 }
86 class CPDF_RenderModule : public CPDF_RenderModuleDef
87 {
88 public:
~CPDF_RenderModule()89     virtual ~CPDF_RenderModule() {}
Installed()90     virtual FX_BOOL	Installed()
91     {
92         return TRUE;
93     }
94     virtual CPDF_DocRenderData*	CreateDocData(CPDF_Document* pDoc);
95     virtual void	DestroyDocData(CPDF_DocRenderData* p);
96     virtual void	ClearDocData(CPDF_DocRenderData* p);
GetRenderData()97     virtual CPDF_DocRenderData* GetRenderData()
98     {
99         return &m_RenderData;
100     }
CreatePageCache(CPDF_Page * pPage)101     virtual CPDF_PageRenderCache*	CreatePageCache(CPDF_Page* pPage)
102     {
103         return new CPDF_PageRenderCache(pPage);
104     }
105     virtual void	DestroyPageCache(CPDF_PageRenderCache* pCache);
GetConfig()106     virtual CPDF_RenderConfig*	GetConfig()
107     {
108         return &m_RenderConfig;
109     }
110 private:
111     CPDF_DocRenderData	m_RenderData;
112     CPDF_RenderConfig	m_RenderConfig;
113 };
CreateDocData(CPDF_Document * pDoc)114 CPDF_DocRenderData*	CPDF_RenderModule::CreateDocData(CPDF_Document* pDoc)
115 {
116     CPDF_DocRenderData* pData = new CPDF_DocRenderData(pDoc);
117     pData->Initialize();
118     return pData;
119 }
DestroyDocData(CPDF_DocRenderData * pDocData)120 void CPDF_RenderModule::DestroyDocData(CPDF_DocRenderData* pDocData)
121 {
122     delete pDocData;
123 }
ClearDocData(CPDF_DocRenderData * p)124 void CPDF_RenderModule::ClearDocData(CPDF_DocRenderData* p)
125 {
126     if (p) {
127         p->Clear(FALSE);
128     }
129 }
DestroyPageCache(CPDF_PageRenderCache * pCache)130 void CPDF_RenderModule::DestroyPageCache(CPDF_PageRenderCache* pCache)
131 {
132     delete pCache;
133 }
InitRenderModule()134 void CPDF_ModuleMgr::InitRenderModule()
135 {
136     delete m_pRenderModule;
137     m_pRenderModule = new CPDF_RenderModule;
138 }
CPDF_RenderOptions()139 CPDF_RenderOptions::CPDF_RenderOptions()
140     : m_ColorMode(RENDER_COLOR_NORMAL)
141     , m_Flags(RENDER_CLEARTYPE)
142     , m_Interpolation(0)
143     , m_AddFlags(0)
144     , m_pOCContext(NULL)
145     , m_dwLimitCacheSize(1024 * 1024 * 100)
146     , m_HalftoneLimit(-1)
147 {
148 }
TranslateColor(FX_ARGB argb) const149 FX_ARGB CPDF_RenderOptions::TranslateColor(FX_ARGB argb) const
150 {
151     if (m_ColorMode == RENDER_COLOR_NORMAL) {
152         return argb;
153     }
154     if (m_ColorMode == RENDER_COLOR_ALPHA) {
155         return argb;
156     }
157     int a, r, g, b;
158     ArgbDecode(argb, a, r, g, b);
159     int gray = FXRGB2GRAY(r, g, b);
160     if (m_ColorMode == RENDER_COLOR_TWOCOLOR) {
161         int color = (r - gray) * (r - gray) + (g - gray) * (g - gray) + (b - gray) * (b - gray);
162         if (gray < 35 && color < 20) {
163             return ArgbEncode(a, m_ForeColor);
164         }
165         if (gray > 221 && color < 20) {
166             return ArgbEncode(a, m_BackColor);
167         }
168         return argb;
169     }
170     int fr = FXSYS_GetRValue(m_ForeColor);
171     int fg = FXSYS_GetGValue(m_ForeColor);
172     int fb = FXSYS_GetBValue(m_ForeColor);
173     int br = FXSYS_GetRValue(m_BackColor);
174     int bg = FXSYS_GetGValue(m_BackColor);
175     int bb = FXSYS_GetBValue(m_BackColor);
176     r = (br - fr) * gray / 255 + fr;
177     g = (bg - fg) * gray / 255 + fg;
178     b = (bb - fb) * gray / 255 + fb;
179     return ArgbEncode(a, r, g, b);
180 }
181 
182 // static
183 int CPDF_RenderStatus::s_CurrentRecursionDepth = 0;
184 
CPDF_RenderStatus()185 CPDF_RenderStatus::CPDF_RenderStatus()
186 {
187     m_pContext = NULL;
188     m_bStopped = FALSE;
189     m_pDevice = NULL;
190     m_pCurObj = NULL;
191     m_pStopObj = NULL;
192     m_HalftoneLimit = 0;
193     m_pObjectRenderer = NULL;
194     m_bPrint = FALSE;
195     m_Transparency = 0;
196     m_DitherBits = 0;
197     m_bDropObjects = FALSE;
198     m_bStdCS = FALSE;
199     m_GroupFamily = 0;
200     m_bLoadMask = FALSE;
201     m_pType3Char = NULL;
202     m_T3FillColor = 0;
203     m_pFormResource = NULL;
204     m_pPageResource = NULL;
205     m_curBlend = FXDIB_BLEND_NORMAL;
206 }
207 
~CPDF_RenderStatus()208 CPDF_RenderStatus::~CPDF_RenderStatus()
209 {
210     if (m_pObjectRenderer) {
211         delete m_pObjectRenderer;
212     }
213 }
214 
Initialize(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)215 FX_BOOL CPDF_RenderStatus::Initialize(CPDF_RenderContext* pContext, CFX_RenderDevice* pDevice,
216                                       const CFX_AffineMatrix* pDeviceMatrix, const CPDF_PageObject* pStopObj,
217                                       const CPDF_RenderStatus* pParentState, const CPDF_GraphicStates* pInitialStates,
218                                       const CPDF_RenderOptions* pOptions, int transparency, FX_BOOL bDropObjects,
219                                       CPDF_Dictionary* pFormResource, FX_BOOL bStdCS, CPDF_Type3Char* pType3Char,
220                                       FX_ARGB fill_color, FX_DWORD GroupFamily,
221                                       FX_BOOL bLoadMask)
222 {
223     m_pContext = pContext;
224     m_pDevice = pDevice;
225     m_DitherBits = pDevice->GetDeviceCaps(FXDC_DITHER_BITS);
226     m_bPrint = m_pDevice->GetDeviceClass() != FXDC_DISPLAY;
227     if (pDeviceMatrix) {
228         m_DeviceMatrix = *pDeviceMatrix;
229     }
230     m_pStopObj = pStopObj;
231     if (pOptions) {
232         m_Options = *pOptions;
233     }
234     m_bDropObjects = bDropObjects;
235     m_bStdCS = bStdCS;
236     m_T3FillColor = fill_color;
237     m_pType3Char = pType3Char;
238     m_GroupFamily = GroupFamily;
239     m_bLoadMask = bLoadMask;
240     m_pFormResource = pFormResource;
241     m_pPageResource = m_pContext->m_pPageResources;
242     if (pInitialStates && !m_pType3Char) {
243         m_InitialStates.CopyStates(*pInitialStates);
244         if (pParentState) {
245             CPDF_ColorStateData* pColorData = (CPDF_ColorStateData*)(const CPDF_ColorStateData*)m_InitialStates.m_ColorState;
246             CPDF_ColorStateData* pParentData = (CPDF_ColorStateData*)(const CPDF_ColorStateData*)pParentState->m_InitialStates.m_ColorState;
247             if (!pColorData || pColorData->m_FillColor.IsNull()) {
248                 CPDF_ColorStateData* pData = m_InitialStates.m_ColorState.GetModify();
249                 pData->m_FillRGB = pParentData->m_FillRGB;
250                 pData->m_FillColor.Copy(&pParentData->m_FillColor);
251             }
252             if (!pColorData || pColorData->m_StrokeColor.IsNull()) {
253                 CPDF_ColorStateData* pData = m_InitialStates.m_ColorState.GetModify();
254                 pData->m_StrokeRGB = pParentData->m_FillRGB;
255                 pData->m_StrokeColor.Copy(&pParentData->m_StrokeColor);
256             }
257         }
258     } else {
259         m_InitialStates.DefaultStates();
260     }
261     m_pObjectRenderer = NULL;
262     m_Transparency = transparency;
263     return TRUE;
264 }
RenderObjectList(const CPDF_PageObjects * pObjs,const CFX_AffineMatrix * pObj2Device)265 void CPDF_RenderStatus::RenderObjectList(const CPDF_PageObjects* pObjs, const CFX_AffineMatrix* pObj2Device)
266 {
267     CFX_FloatRect clip_rect = m_pDevice->GetClipBox();
268     CFX_AffineMatrix device2object;
269     device2object.SetReverse(*pObj2Device);
270     device2object.TransformRect(clip_rect);
271     int index = 0;
272     FX_POSITION pos = pObjs->GetFirstObjectPosition();
273     while(pos) {
274         index ++;
275         CPDF_PageObject* pCurObj = pObjs->GetNextObject(pos);
276         if (pCurObj == m_pStopObj) {
277             m_bStopped = TRUE;
278             return;
279         }
280         if (!pCurObj) {
281             continue;
282         }
283         if(pCurObj == NULL || pCurObj->m_Left > clip_rect.right || pCurObj->m_Right < clip_rect.left ||
284                 pCurObj->m_Bottom > clip_rect.top || pCurObj->m_Top < clip_rect.bottom) {
285             continue;
286         }
287         RenderSingleObject(pCurObj, pObj2Device);
288         if (m_bStopped) {
289             return;
290         }
291     }
292 }
RenderSingleObject(const CPDF_PageObject * pObj,const CFX_AffineMatrix * pObj2Device)293 void CPDF_RenderStatus::RenderSingleObject(const CPDF_PageObject* pObj, const CFX_AffineMatrix* pObj2Device)
294 {
295     CFX_AutoRestorer<int> restorer(&s_CurrentRecursionDepth);
296     if (++s_CurrentRecursionDepth > kRenderMaxRecursionDepth) {
297         return;
298     }
299     m_pCurObj = pObj;
300     if (m_Options.m_pOCContext && pObj->m_ContentMark.NotNull()) {
301         if (!m_Options.m_pOCContext->CheckObjectVisible(pObj)) {
302             return;
303         }
304     }
305     ProcessClipPath(pObj->m_ClipPath, pObj2Device);
306     if (ProcessTransparency(pObj, pObj2Device)) {
307         return;
308     }
309     ProcessObjectNoClip(pObj, pObj2Device);
310 }
ContinueSingleObject(const CPDF_PageObject * pObj,const CFX_AffineMatrix * pObj2Device,IFX_Pause * pPause)311 FX_BOOL CPDF_RenderStatus::ContinueSingleObject(const CPDF_PageObject* pObj, const CFX_AffineMatrix* pObj2Device, IFX_Pause* pPause)
312 {
313     if (m_pObjectRenderer) {
314         if (m_pObjectRenderer->Continue(pPause)) {
315             return TRUE;
316         }
317         if (!m_pObjectRenderer->m_Result) {
318             DrawObjWithBackground(pObj, pObj2Device);
319         }
320         delete m_pObjectRenderer;
321         m_pObjectRenderer = NULL;
322         return FALSE;
323     }
324     m_pCurObj = pObj;
325     if (m_Options.m_pOCContext && pObj->m_ContentMark.NotNull())
326         if (!m_Options.m_pOCContext->CheckObjectVisible(pObj)) {
327             return FALSE;
328         }
329     ProcessClipPath(pObj->m_ClipPath, pObj2Device);
330     if (ProcessTransparency(pObj, pObj2Device)) {
331         return FALSE;
332     }
333     if (pObj->m_Type == PDFPAGE_IMAGE) {
334         m_pObjectRenderer = IPDF_ObjectRenderer::Create(pObj->m_Type);
335         if (!m_pObjectRenderer->Start(this, pObj, pObj2Device, FALSE)) {
336             if (!m_pObjectRenderer->m_Result) {
337                 DrawObjWithBackground(pObj, pObj2Device);
338             }
339             delete m_pObjectRenderer;
340             m_pObjectRenderer = NULL;
341             return FALSE;
342         }
343         return ContinueSingleObject(pObj, pObj2Device, pPause);
344     }
345     ProcessObjectNoClip(pObj, pObj2Device);
346     return FALSE;
347 }
Create(int type)348 IPDF_ObjectRenderer* IPDF_ObjectRenderer::Create(int type)
349 {
350     if (type != PDFPAGE_IMAGE) {
351         return NULL;
352     }
353     return new CPDF_ImageRenderer;
354 }
GetObjectClippedRect(const CPDF_PageObject * pObj,const CFX_AffineMatrix * pObj2Device,FX_BOOL bLogical,FX_RECT & rect) const355 FX_BOOL CPDF_RenderStatus::GetObjectClippedRect(const CPDF_PageObject* pObj, const CFX_AffineMatrix* pObj2Device, FX_BOOL bLogical, FX_RECT &rect) const
356 {
357     rect = pObj->GetBBox(pObj2Device);
358     FX_RECT rtClip = m_pDevice->GetClipBox();
359     if (!bLogical) {
360         CFX_Matrix dCTM = m_pDevice->GetCTM();
361         FX_FLOAT a = FXSYS_fabs(dCTM.a);
362         FX_FLOAT d = FXSYS_fabs(dCTM.d);
363         if (a != 1.0f || d != 1.0f) {
364             rect.right = rect.left + (FX_INT32)FXSYS_ceil((FX_FLOAT)rect.Width() * a);
365             rect.bottom = rect.top + (FX_INT32)FXSYS_ceil((FX_FLOAT)rect.Height() * d);
366             rtClip.right = rtClip.left + (FX_INT32)FXSYS_ceil((FX_FLOAT)rtClip.Width() * a);
367             rtClip.bottom = rtClip.top + (FX_INT32)FXSYS_ceil((FX_FLOAT)rtClip.Height() * d);
368         }
369     }
370     rect.Intersect(rtClip);
371     return rect.IsEmpty();
372 }
DitherObjectArea(const CPDF_PageObject * pObj,const CFX_AffineMatrix * pObj2Device)373 void CPDF_RenderStatus::DitherObjectArea(const CPDF_PageObject* pObj, const CFX_AffineMatrix* pObj2Device)
374 {
375     CFX_DIBitmap* pBitmap = m_pDevice->GetBitmap();
376     if (pBitmap == NULL) {
377         return;
378     }
379     FX_RECT rect;
380     if (GetObjectClippedRect(pObj, pObj2Device, FALSE, rect)) {
381         return;
382     }
383     if (m_DitherBits == 2) {
384         static FX_ARGB pal[4] = {0, 85, 170, 255};
385         pBitmap->DitherFS(pal, 4, &rect);
386     } else if (m_DitherBits == 3) {
387         static FX_ARGB pal[8] = {0, 36, 73, 109, 146, 182, 219, 255};
388         pBitmap->DitherFS(pal, 8, &rect);
389     } else if (m_DitherBits == 4) {
390         static FX_ARGB pal[16] = {0, 17, 34, 51, 68, 85, 102, 119, 136, 153, 170, 187, 204, 221, 238, 255};
391         pBitmap->DitherFS(pal, 16, &rect);
392     }
393 }
ProcessObjectNoClip(const CPDF_PageObject * pObj,const CFX_AffineMatrix * pObj2Device)394 void CPDF_RenderStatus::ProcessObjectNoClip(const CPDF_PageObject* pObj, const CFX_AffineMatrix* pObj2Device)
395 {
396     FX_BOOL bRet = FALSE;
397     switch (pObj->m_Type) {
398         case PDFPAGE_TEXT:
399             bRet = ProcessText((CPDF_TextObject*)pObj, pObj2Device, NULL);
400             break;
401         case PDFPAGE_PATH:
402             bRet = ProcessPath((CPDF_PathObject*)pObj, pObj2Device);
403             break;
404         case PDFPAGE_IMAGE:
405             bRet = ProcessImage((CPDF_ImageObject*)pObj, pObj2Device);
406             break;
407         case PDFPAGE_SHADING:
408             bRet = ProcessShading((CPDF_ShadingObject*)pObj, pObj2Device);
409             break;
410         case PDFPAGE_FORM:
411             bRet = ProcessForm((CPDF_FormObject*)pObj, pObj2Device);
412             break;
413     }
414     if (!bRet) {
415         DrawObjWithBackground(pObj, pObj2Device);
416     }
417 }
DrawObjWithBlend(const CPDF_PageObject * pObj,const CFX_AffineMatrix * pObj2Device)418 FX_BOOL CPDF_RenderStatus::DrawObjWithBlend(const CPDF_PageObject* pObj, const CFX_AffineMatrix* pObj2Device)
419 {
420     FX_BOOL bRet = FALSE;
421     switch (pObj->m_Type) {
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_FORM:
429             bRet = ProcessForm((CPDF_FormObject*)pObj, pObj2Device);
430             break;
431     }
432     return bRet;
433 }
GetScaledMatrix(CFX_Matrix & matrix) const434 void CPDF_RenderStatus::GetScaledMatrix(CFX_Matrix &matrix) const
435 {
436     CFX_Matrix dCTM = m_pDevice->GetCTM();
437     matrix.a *= FXSYS_fabs(dCTM.a);
438     matrix.d *= FXSYS_fabs(dCTM.d);
439 }
DrawObjWithBackground(const CPDF_PageObject * pObj,const CFX_AffineMatrix * pObj2Device)440 void CPDF_RenderStatus::DrawObjWithBackground(const CPDF_PageObject* pObj, const CFX_AffineMatrix* pObj2Device)
441 {
442     FX_RECT rect;
443     if (GetObjectClippedRect(pObj, pObj2Device, FALSE, rect)) {
444         return;
445     }
446     int res = 300;
447     if (pObj->m_Type == PDFPAGE_IMAGE && m_pDevice->GetDeviceCaps(FXDC_DEVICE_CLASS) == FXDC_PRINTER) {
448         res = 0;
449     }
450     CPDF_ScaledRenderBuffer buffer;
451     if (!buffer.Initialize(m_pContext, m_pDevice, &rect, pObj, &m_Options, res)) {
452         return;
453     }
454     CFX_AffineMatrix matrix = *pObj2Device;
455     matrix.Concat(*buffer.GetMatrix());
456     GetScaledMatrix(matrix);
457     CPDF_Dictionary* pFormResource = NULL;
458     if (pObj->m_Type == PDFPAGE_FORM) {
459         CPDF_FormObject* pFormObj = (CPDF_FormObject*)pObj;
460         if (pFormObj->m_pForm && pFormObj->m_pForm->m_pFormDict) {
461             pFormResource = pFormObj->m_pForm->m_pFormDict->GetDict(FX_BSTRC("Resources"));
462         }
463     }
464     CPDF_RenderStatus status;
465     status.Initialize(m_pContext, buffer.GetDevice(), buffer.GetMatrix(), NULL, NULL, NULL, &m_Options, m_Transparency, m_bDropObjects, pFormResource);
466     status.RenderSingleObject(pObj, &matrix);
467     buffer.OutputToDevice();
468 }
ProcessForm(CPDF_FormObject * pFormObj,const CFX_AffineMatrix * pObj2Device)469 FX_BOOL CPDF_RenderStatus::ProcessForm(CPDF_FormObject* pFormObj, const CFX_AffineMatrix* pObj2Device)
470 {
471     CPDF_Dictionary* pOC = pFormObj->m_pForm->m_pFormDict->GetDict(FX_BSTRC("OC"));
472     if (pOC && m_Options.m_pOCContext && !m_Options.m_pOCContext->CheckOCGVisible(pOC)) {
473         return TRUE;
474     }
475     CFX_AffineMatrix matrix = pFormObj->m_FormMatrix;
476     matrix.Concat(*pObj2Device);
477     CPDF_Dictionary* pResources = NULL;
478     if (pFormObj->m_pForm && pFormObj->m_pForm->m_pFormDict) {
479         pResources = pFormObj->m_pForm->m_pFormDict->GetDict(FX_BSTRC("Resources"));
480     }
481     CPDF_RenderStatus status;
482     status.Initialize(m_pContext, m_pDevice, NULL, m_pStopObj,
483                       this, pFormObj, &m_Options, m_Transparency, m_bDropObjects, pResources, FALSE);
484     status.m_curBlend = m_curBlend;
485     m_pDevice->SaveState();
486     status.RenderObjectList(pFormObj->m_pForm, &matrix);
487     m_bStopped = status.m_bStopped;
488     m_pDevice->RestoreState();
489     return TRUE;
490 }
IsAvailableMatrix(const CFX_AffineMatrix & matrix)491 FX_BOOL IsAvailableMatrix(const CFX_AffineMatrix& matrix)
492 {
493     if (matrix.a == 0 || matrix.d == 0) {
494         return matrix.b != 0 && matrix.c != 0;
495     }
496     if (matrix.b == 0 || matrix.c == 0) {
497         return matrix.a != 0 && matrix.d != 0;
498     }
499     return TRUE;
500 }
ProcessPath(CPDF_PathObject * pPathObj,const CFX_AffineMatrix * pObj2Device)501 FX_BOOL CPDF_RenderStatus::ProcessPath(CPDF_PathObject* pPathObj, const CFX_AffineMatrix* pObj2Device)
502 {
503     int FillType = pPathObj->m_FillType;
504     FX_BOOL bStroke = pPathObj->m_bStroke;
505     ProcessPathPattern(pPathObj, pObj2Device, FillType, bStroke);
506     if (FillType == 0 && !bStroke) {
507         return TRUE;
508     }
509     FX_DWORD fill_argb = 0;
510     if (FillType) {
511         fill_argb = GetFillArgb(pPathObj);
512     }
513     FX_DWORD stroke_argb = 0;
514     if (bStroke) {
515         stroke_argb = GetStrokeArgb(pPathObj);
516     }
517     CFX_AffineMatrix path_matrix = pPathObj->m_Matrix;
518     path_matrix.Concat(*pObj2Device);
519     if (!IsAvailableMatrix(path_matrix)) {
520         return TRUE;
521     }
522     if (FillType && (m_Options.m_Flags & RENDER_RECT_AA)) {
523         FillType |= FXFILL_RECT_AA;
524     }
525     if (m_Options.m_Flags & RENDER_FILL_FULLCOVER) {
526         FillType |= FXFILL_FULLCOVER;
527     }
528     if (m_Options.m_Flags & RENDER_NOPATHSMOOTH) {
529         FillType |= FXFILL_NOPATHSMOOTH;
530     }
531     if (bStroke) {
532         FillType |= FX_FILL_STROKE;
533     }
534     const CPDF_GeneralStateData* pGeneralData = ((CPDF_PageObject*)pPathObj)->m_GeneralState;
535     if (pGeneralData && pGeneralData->m_StrokeAdjust) {
536         FillType |= FX_STROKE_ADJUST;
537     }
538     if (m_pType3Char) {
539         FillType |= FX_FILL_TEXT_MODE;
540     }
541     CFX_GraphStateData graphState(*pPathObj->m_GraphState);
542     if (m_Options.m_Flags & RENDER_THINLINE) {
543         graphState.m_LineWidth = 0;
544     }
545     return m_pDevice->DrawPath(pPathObj->m_Path, &path_matrix, &graphState, fill_argb, stroke_argb, FillType, 0, NULL, m_curBlend);
546 }
GetTransferFunc(CPDF_Object * pObj) const547 CPDF_TransferFunc* CPDF_RenderStatus::GetTransferFunc(CPDF_Object* pObj) const
548 {
549     ASSERT(pObj != NULL);
550     CPDF_DocRenderData* pDocCache = m_pContext->m_pDocument->GetRenderData();
551     if (!pDocCache) {
552         return NULL;
553     }
554     return pDocCache->GetTransferFunc(pObj);
555 }
GetFillArgb(const CPDF_PageObject * pObj,FX_BOOL bType3) const556 FX_ARGB CPDF_RenderStatus::GetFillArgb(const CPDF_PageObject* pObj, FX_BOOL bType3) const
557 {
558     CPDF_ColorStateData* pColorData = (CPDF_ColorStateData*)(const CPDF_ColorStateData*)pObj->m_ColorState;
559     if (m_pType3Char && !bType3 && (!m_pType3Char->m_bColored || (m_pType3Char->m_bColored && (!pColorData || pColorData->m_FillColor.IsNull())))) {
560         return m_T3FillColor;
561     } else if (!pColorData || pColorData->m_FillColor.IsNull()) {
562         pColorData = (CPDF_ColorStateData*)(const CPDF_ColorStateData*)m_InitialStates.m_ColorState;
563     }
564     FX_COLORREF rgb = pColorData->m_FillRGB;
565     if (rgb == (FX_DWORD) - 1) {
566         return 0;
567     }
568     const CPDF_GeneralStateData* pGeneralData = pObj->m_GeneralState;
569     int alpha;
570     if (pGeneralData) {
571         alpha = (FX_INT32)(pGeneralData->m_FillAlpha * 255);
572         if (pGeneralData->m_pTR) {
573             if (!pGeneralData->m_pTransferFunc) {
574                 ((CPDF_GeneralStateData*)pGeneralData)->m_pTransferFunc = GetTransferFunc(pGeneralData->m_pTR);
575             }
576             if (pGeneralData->m_pTransferFunc) {
577                 rgb = pGeneralData->m_pTransferFunc->TranslateColor(rgb);
578             }
579         }
580     } else {
581         alpha = 255;
582     }
583     return m_Options.TranslateColor(ArgbEncode(alpha, rgb));
584 }
GetStrokeArgb(const CPDF_PageObject * pObj) const585 FX_ARGB CPDF_RenderStatus::GetStrokeArgb(const CPDF_PageObject* pObj) const
586 {
587     CPDF_ColorStateData* pColorData = (CPDF_ColorStateData*)(const CPDF_ColorStateData*)pObj->m_ColorState;
588     if (m_pType3Char && (!m_pType3Char->m_bColored || (m_pType3Char->m_bColored && (!pColorData || pColorData->m_StrokeColor.IsNull())))) {
589         return m_T3FillColor;
590     } else if (!pColorData || pColorData->m_StrokeColor.IsNull()) {
591         pColorData = (CPDF_ColorStateData*)(const CPDF_ColorStateData*)m_InitialStates.m_ColorState;
592     }
593     FX_COLORREF rgb = pColorData->m_StrokeRGB;
594     if (rgb == (FX_DWORD) - 1) {
595         return 0;
596     }
597     const CPDF_GeneralStateData* pGeneralData = pObj->m_GeneralState;
598     int alpha;
599     if (pGeneralData) {
600         alpha = (FX_INT32)(pGeneralData->m_StrokeAlpha * 255);
601         if (pGeneralData->m_pTR) {
602             if (!pGeneralData->m_pTransferFunc) {
603                 ((CPDF_GeneralStateData*)pGeneralData)->m_pTransferFunc = GetTransferFunc(pGeneralData->m_pTR);
604             }
605             if (pGeneralData->m_pTransferFunc) {
606                 rgb = pGeneralData->m_pTransferFunc->TranslateColor(rgb);
607             }
608         }
609     } else {
610         alpha = 255;
611     }
612     return m_Options.TranslateColor(ArgbEncode(alpha, rgb));
613 }
ProcessClipPath(CPDF_ClipPath ClipPath,const CFX_AffineMatrix * pObj2Device)614 void CPDF_RenderStatus::ProcessClipPath(CPDF_ClipPath ClipPath, const CFX_AffineMatrix* pObj2Device)
615 {
616     if (ClipPath.IsNull()) {
617         if (m_LastClipPath.IsNull()) {
618             return;
619         }
620         m_pDevice->RestoreState(TRUE);
621         m_LastClipPath.SetNull();
622         return;
623     }
624     if (m_LastClipPath == ClipPath) {
625         return;
626     }
627     m_LastClipPath = ClipPath;
628     m_pDevice->RestoreState(TRUE);
629     int nClipPath = ClipPath.GetPathCount();
630     int i;
631     for (i = 0; i < nClipPath; i++) {
632         const CFX_PathData* pPathData = ClipPath.GetPath(i);
633         if (pPathData == NULL) {
634             continue;
635         }
636         if (pPathData->GetPointCount() == 0) {
637             CFX_PathData EmptyPath;
638             EmptyPath.AppendRect(-1, -1, 0, 0);
639             int fill_mode = FXFILL_WINDING;
640             m_pDevice->SetClip_PathFill(&EmptyPath, NULL, fill_mode);
641         } else {
642             int ClipType = ClipPath.GetClipType(i);
643             m_pDevice->SetClip_PathFill(pPathData, pObj2Device, ClipType);
644         }
645     }
646     int textcount = ClipPath.GetTextCount();
647     if (textcount == 0) {
648         return;
649     }
650     if (m_pDevice->GetDeviceClass() == FXDC_DISPLAY && !(m_pDevice->GetDeviceCaps(FXDC_RENDER_CAPS) & FXRC_SOFT_CLIP)) {
651         return;
652     }
653     CFX_PathData* pTextClippingPath = NULL;
654     for (i = 0; i < textcount; i ++) {
655         CPDF_TextObject* pText = ClipPath.GetText(i);
656         if (pText == NULL) {
657             if (pTextClippingPath) {
658                 int fill_mode = FXFILL_WINDING;
659                 if (m_Options.m_Flags & RENDER_NOTEXTSMOOTH) {
660                     fill_mode |= FXFILL_NOPATHSMOOTH;
661                 }
662                 m_pDevice->SetClip_PathFill(pTextClippingPath, NULL, fill_mode);
663                 delete pTextClippingPath;
664                 pTextClippingPath = NULL;
665             }
666         } else {
667             if (pTextClippingPath == NULL) {
668                 pTextClippingPath = new CFX_PathData;
669             }
670             ProcessText(pText, pObj2Device, pTextClippingPath);
671         }
672     }
673     if (pTextClippingPath) {
674         delete pTextClippingPath;
675     }
676 }
DrawClipPath(CPDF_ClipPath ClipPath,const CFX_AffineMatrix * pObj2Device)677 void CPDF_RenderStatus::DrawClipPath(CPDF_ClipPath ClipPath, const CFX_AffineMatrix* pObj2Device)
678 {
679     if (ClipPath.IsNull()) {
680         return;
681     }
682     int fill_mode = 0;
683     if (m_Options.m_Flags & RENDER_NOPATHSMOOTH) {
684         fill_mode |= FXFILL_NOPATHSMOOTH;
685     }
686     int nClipPath = ClipPath.GetPathCount();
687     int i;
688     for (i = 0; i < nClipPath; i++) {
689         const CFX_PathData* pPathData = ClipPath.GetPath(i);
690         if (pPathData == NULL) {
691             continue;
692         }
693         CFX_GraphStateData stroke_state;
694         if (m_Options.m_Flags & RENDER_THINLINE) {
695             stroke_state.m_LineWidth = 0;
696         }
697         m_pDevice->DrawPath(pPathData, pObj2Device, &stroke_state, 0, 0xffff0000, fill_mode);
698     }
699 }
SelectClipPath(CPDF_PathObject * pPathObj,const CFX_AffineMatrix * pObj2Device,FX_BOOL bStroke)700 FX_BOOL CPDF_RenderStatus::SelectClipPath(CPDF_PathObject* pPathObj, const CFX_AffineMatrix* pObj2Device, FX_BOOL bStroke)
701 {
702     CFX_AffineMatrix path_matrix = pPathObj->m_Matrix;
703     path_matrix.Concat(*pObj2Device);
704     if (bStroke) {
705         CFX_GraphStateData graphState(*pPathObj->m_GraphState);
706         if (m_Options.m_Flags & RENDER_THINLINE) {
707             graphState.m_LineWidth = 0;
708         }
709         return m_pDevice->SetClip_PathStroke(pPathObj->m_Path, &path_matrix, &graphState);
710     }
711     int fill_mode = pPathObj->m_FillType;
712     if (m_Options.m_Flags & RENDER_NOPATHSMOOTH) {
713         fill_mode |= FXFILL_NOPATHSMOOTH;
714     }
715     return m_pDevice->SetClip_PathFill(pPathObj->m_Path, &path_matrix, fill_mode);
716 }
ProcessTransparency(const CPDF_PageObject * pPageObj,const CFX_AffineMatrix * pObj2Device)717 FX_BOOL CPDF_RenderStatus::ProcessTransparency(const CPDF_PageObject* pPageObj, const CFX_AffineMatrix* pObj2Device)
718 {
719     const CPDF_GeneralStateData* pGeneralState = pPageObj->m_GeneralState;
720     int blend_type = pGeneralState ? pGeneralState->m_BlendType : FXDIB_BLEND_NORMAL;
721     if (blend_type == FXDIB_BLEND_UNSUPPORTED) {
722         return TRUE;
723     }
724     CPDF_Dictionary* pSMaskDict = pGeneralState ? (CPDF_Dictionary*)pGeneralState->m_pSoftMask : NULL;
725     if (pSMaskDict) {
726         if (pPageObj->m_Type == PDFPAGE_IMAGE &&
727                 ((CPDF_ImageObject*)pPageObj)->m_pImage->GetDict()->KeyExist(FX_BSTRC("SMask"))) {
728             pSMaskDict = NULL;
729         }
730     }
731     CPDF_Dictionary* pFormResource = NULL;
732     FX_FLOAT group_alpha = 1.0f;
733     int Transparency = m_Transparency;
734     FX_BOOL bGroupTransparent = FALSE;
735     if (pPageObj->m_Type == PDFPAGE_FORM) {
736         CPDF_FormObject* pFormObj = (CPDF_FormObject*)pPageObj;
737         const CPDF_GeneralStateData *pStateData = pFormObj->m_GeneralState.GetObject();
738         if (pStateData) {
739             group_alpha = pStateData->m_FillAlpha;
740         }
741         Transparency = pFormObj->m_pForm->m_Transparency;
742         bGroupTransparent = Transparency & PDFTRANS_ISOLATED ? TRUE : FALSE;
743         if (pFormObj->m_pForm->m_pFormDict) {
744             pFormResource = pFormObj->m_pForm->m_pFormDict->GetDict("Resources");
745         }
746     }
747     FX_BOOL bTextClip = FALSE;
748     if (pPageObj->m_ClipPath.NotNull() && pPageObj->m_ClipPath.GetTextCount() &&
749             m_pDevice->GetDeviceClass() == FXDC_DISPLAY && !(m_pDevice->GetDeviceCaps(FXDC_RENDER_CAPS) & FXRC_SOFT_CLIP)) {
750         bTextClip = TRUE;
751     }
752     if ((m_Options.m_Flags & RENDER_OVERPRINT) && pPageObj->m_Type == PDFPAGE_IMAGE && pGeneralState && pGeneralState->m_FillOP && pGeneralState->m_StrokeOP) {
753         CPDF_Document* pDocument = NULL;
754         CPDF_Page* pPage = NULL;
755         if (m_pContext->m_pPageCache) {
756             pPage = m_pContext->m_pPageCache->GetPage();
757             pDocument = pPage->m_pDocument;
758         } else {
759             pDocument = ((CPDF_ImageObject*)pPageObj)->m_pImage->GetDocument();
760         }
761         CPDF_Dictionary* pPageResources = pPage ? pPage->m_pPageResources : NULL;
762         CPDF_Object* pCSObj = ((CPDF_ImageObject*)pPageObj)->m_pImage->GetStream()->GetDict()->GetElementValue(FX_BSTRC("ColorSpace"));
763         CPDF_ColorSpace* pColorSpace = pDocument->LoadColorSpace(pCSObj, pPageResources);
764         if (pColorSpace) {
765             int format = pColorSpace->GetFamily();
766             if (format == PDFCS_DEVICECMYK || format == PDFCS_SEPARATION || format == PDFCS_DEVICEN) {
767                 blend_type = FXDIB_BLEND_DARKEN;
768             }
769             pDocument->GetPageData()->ReleaseColorSpace(pCSObj);
770         }
771     }
772     if (pSMaskDict == NULL && group_alpha == 1.0f && blend_type == FXDIB_BLEND_NORMAL && !bTextClip && !bGroupTransparent) {
773         return FALSE;
774     }
775     FX_BOOL isolated = Transparency & PDFTRANS_ISOLATED;
776     if (m_bPrint) {
777         FX_BOOL bRet = FALSE;
778         int rendCaps = m_pDevice->GetRenderCaps();
779         if (!((Transparency & PDFTRANS_ISOLATED) || pSMaskDict || bTextClip) && (rendCaps & FXRC_BLEND_MODE)) {
780             int oldBlend = m_curBlend;
781             m_curBlend = blend_type;
782             bRet = DrawObjWithBlend(pPageObj, pObj2Device);
783             m_curBlend = oldBlend;
784         }
785         if (!bRet) {
786             DrawObjWithBackground(pPageObj, pObj2Device);
787         }
788         return TRUE;
789     }
790     FX_RECT rect = pPageObj->GetBBox(pObj2Device);
791     rect.Intersect(m_pDevice->GetClipBox());
792     if (rect.IsEmpty()) {
793         return TRUE;
794     }
795     CFX_Matrix deviceCTM = m_pDevice->GetCTM();
796     FX_FLOAT scaleX = FXSYS_fabs(deviceCTM.a);
797     FX_FLOAT scaleY = FXSYS_fabs(deviceCTM.d);
798     int width = FXSYS_round((FX_FLOAT)rect.Width() * scaleX);
799     int height = FXSYS_round((FX_FLOAT)rect.Height() * scaleY);
800     CFX_FxgeDevice bitmap_device;
801     CFX_DIBitmap* oriDevice = NULL;
802     if (!isolated && (m_pDevice->GetRenderCaps() & FXRC_GET_BITS)) {
803         oriDevice = new CFX_DIBitmap;
804         if (!m_pDevice->CreateCompatibleBitmap(oriDevice, width, height)) {
805             return TRUE;
806         }
807         m_pDevice->GetDIBits(oriDevice, rect.left, rect.top);
808     }
809     if (!bitmap_device.Create(width, height, FXDIB_Argb, 0, oriDevice)) {
810         return TRUE;
811     }
812     CFX_DIBitmap* bitmap = bitmap_device.GetBitmap();
813     bitmap->Clear(0);
814     CFX_AffineMatrix new_matrix = *pObj2Device;
815     new_matrix.TranslateI(-rect.left, -rect.top);
816     new_matrix.Scale(scaleX, scaleY);
817     CFX_DIBitmap* pTextMask = NULL;
818     if (bTextClip) {
819         pTextMask = new CFX_DIBitmap;
820         if (!pTextMask->Create(width, height, FXDIB_8bppMask)) {
821             delete pTextMask;
822             return TRUE;
823         }
824         pTextMask->Clear(0);
825         CFX_FxgeDevice text_device;
826         text_device.Attach(pTextMask);
827         for (FX_DWORD i = 0; i < pPageObj->m_ClipPath.GetTextCount(); i ++) {
828             CPDF_TextObject* textobj = pPageObj->m_ClipPath.GetText(i);
829             if (textobj == NULL) {
830                 break;
831             }
832             CFX_AffineMatrix text_matrix;
833             textobj->GetTextMatrix(&text_matrix);
834             CPDF_TextRenderer::DrawTextPath(&text_device, textobj->m_nChars, textobj->m_pCharCodes, textobj->m_pCharPos,
835                                             textobj->m_TextState.GetFont(), textobj->m_TextState.GetFontSize(),
836                                             &text_matrix, &new_matrix, textobj->m_GraphState, (FX_ARGB) - 1, 0, NULL);
837         }
838     }
839     CPDF_RenderStatus bitmap_render;
840     bitmap_render.Initialize(m_pContext, &bitmap_device, NULL,
841                              m_pStopObj, NULL, NULL, &m_Options, 0, m_bDropObjects, pFormResource, TRUE);
842     bitmap_render.ProcessObjectNoClip(pPageObj, &new_matrix);
843     m_bStopped = bitmap_render.m_bStopped;
844     if (pSMaskDict) {
845         CFX_AffineMatrix smask_matrix;
846         FXSYS_memcpy32(&smask_matrix, pGeneralState->m_SMaskMatrix, sizeof smask_matrix);
847         smask_matrix.Concat(*pObj2Device);
848         CFX_DIBSource* pSMaskSource = LoadSMask(pSMaskDict, &rect, &smask_matrix);
849         if (pSMaskSource) {
850             bitmap->MultiplyAlpha(pSMaskSource);
851             delete pSMaskSource;
852         }
853     }
854     if (pTextMask) {
855         bitmap->MultiplyAlpha(pTextMask);
856         delete pTextMask;
857         pTextMask = NULL;
858     }
859     if (Transparency & PDFTRANS_GROUP && group_alpha != 1.0f) {
860         bitmap->MultiplyAlpha((FX_INT32)(group_alpha * 255));
861     }
862     Transparency = m_Transparency;
863     if (pPageObj->m_Type == PDFPAGE_FORM) {
864         Transparency |= PDFTRANS_GROUP;
865     }
866     CompositeDIBitmap(bitmap, rect.left, rect.top, 0, 255, blend_type, Transparency);
867     if (oriDevice) {
868         delete oriDevice;
869     }
870     return TRUE;
871 }
GetBackdrop(const CPDF_PageObject * pObj,const FX_RECT & rect,int & left,int & top,FX_BOOL bBackAlphaRequired)872 CFX_DIBitmap* CPDF_RenderStatus::GetBackdrop(const CPDF_PageObject* pObj, const FX_RECT& rect, int& left, int& top,
873         FX_BOOL bBackAlphaRequired)
874 {
875     FX_RECT bbox = rect;
876     bbox.Intersect(m_pDevice->GetClipBox());
877     left = bbox.left;
878     top = bbox.top;
879     CFX_Matrix deviceCTM = m_pDevice->GetCTM();
880     FX_FLOAT scaleX = FXSYS_fabs(deviceCTM.a);
881     FX_FLOAT scaleY = FXSYS_fabs(deviceCTM.d);
882     int width = FXSYS_round(bbox.Width() * scaleX);
883     int height = FXSYS_round(bbox.Height() * scaleY);
884     CFX_DIBitmap* pBackdrop = new CFX_DIBitmap;
885     if (bBackAlphaRequired && !m_bDropObjects) {
886         pBackdrop->Create(width, height, FXDIB_Argb);
887     } else {
888         m_pDevice->CreateCompatibleBitmap(pBackdrop, width, height);
889     }
890     if (pBackdrop->GetBuffer() == NULL) {
891         delete pBackdrop;
892         return NULL;
893     }
894     FX_BOOL bNeedDraw;
895     if (pBackdrop->HasAlpha()) {
896         bNeedDraw = !(m_pDevice->GetRenderCaps() & FXRC_ALPHA_OUTPUT);
897     } else {
898         bNeedDraw = !(m_pDevice->GetRenderCaps() & FXRC_GET_BITS);
899     }
900     if (!bNeedDraw) {
901         m_pDevice->GetDIBits(pBackdrop, left, top);
902         return pBackdrop;
903     }
904     CFX_AffineMatrix FinalMatrix = m_DeviceMatrix;
905     FinalMatrix.TranslateI(-left, -top);
906     FinalMatrix.Scale(scaleX, scaleY);
907     pBackdrop->Clear(pBackdrop->HasAlpha() ? 0 : 0xffffffff);
908     CFX_FxgeDevice device;
909     device.Attach(pBackdrop);
910     m_pContext->Render(&device, pObj, &m_Options, &FinalMatrix);
911     return pBackdrop;
912 }
GetBackground(CFX_DIBitmap * pBuffer,const CPDF_PageObject * pObj,const CPDF_RenderOptions * pOptions,CFX_AffineMatrix * pFinalMatrix)913 void CPDF_RenderContext::GetBackground(CFX_DIBitmap* pBuffer, const CPDF_PageObject* pObj,
914                                        const CPDF_RenderOptions* pOptions, CFX_AffineMatrix* pFinalMatrix)
915 {
916     CFX_FxgeDevice device;
917     device.Attach(pBuffer);
918 
919     FX_RECT rect(0, 0, device.GetWidth(), device.GetHeight());
920     device.FillRect(&rect, 0xffffffff);
921     Render(&device, pObj, pOptions, pFinalMatrix);
922 }
CloneObjStates(const CPDF_GraphicStates * pSrcStates,FX_BOOL bStroke)923 CPDF_GraphicStates* CPDF_RenderStatus::CloneObjStates(const CPDF_GraphicStates* pSrcStates, FX_BOOL bStroke)
924 {
925     if (!pSrcStates) {
926         return NULL;
927     }
928     CPDF_GraphicStates* pStates = new CPDF_GraphicStates;
929     pStates->CopyStates(*pSrcStates);
930     CPDF_Color* pObjColor = bStroke ? pSrcStates->m_ColorState.GetStrokeColor() :
931                             pSrcStates->m_ColorState.GetFillColor();
932     if (!pObjColor->IsNull()) {
933         CPDF_ColorStateData* pColorData = pStates->m_ColorState.GetModify();
934         pColorData->m_FillRGB = bStroke ? pSrcStates->m_ColorState.GetObject()->m_StrokeRGB :
935                                 pSrcStates->m_ColorState.GetObject()->m_FillRGB;
936         pColorData->m_StrokeRGB = pColorData->m_FillRGB;
937     }
938     return pStates;
939 }
CPDF_RenderContext()940 CPDF_RenderContext::CPDF_RenderContext()
941 {
942 }
Create(CPDF_Document * pDoc,CPDF_PageRenderCache * pPageCache,CPDF_Dictionary * pPageResources,FX_BOOL bFirstLayer)943 void CPDF_RenderContext::Create(CPDF_Document* pDoc, CPDF_PageRenderCache* pPageCache,
944                                 CPDF_Dictionary* pPageResources, FX_BOOL bFirstLayer)
945 {
946     m_pDocument = pDoc;
947     m_pPageResources = pPageResources;
948     m_pPageCache = pPageCache;
949     m_bFirstLayer = bFirstLayer;
950 }
Create(CPDF_Page * pPage,FX_BOOL bFirstLayer)951 void CPDF_RenderContext::Create(CPDF_Page* pPage, FX_BOOL bFirstLayer)
952 {
953     m_pDocument = pPage->m_pDocument;
954     m_pPageResources = pPage->m_pPageResources;
955     m_pPageCache = pPage->GetRenderCache();
956     m_bFirstLayer = bFirstLayer;
957 }
~CPDF_RenderContext()958 CPDF_RenderContext::~CPDF_RenderContext()
959 {
960 }
Clear()961 void CPDF_RenderContext::Clear()
962 {
963     m_pDocument = NULL;
964     m_pPageResources = NULL;
965     m_pPageCache = NULL;
966     m_bFirstLayer = TRUE;
967     m_ContentList.RemoveAll();
968 }
AppendObjectList(CPDF_PageObjects * pObjs,const CFX_AffineMatrix * pObject2Device)969 void CPDF_RenderContext::AppendObjectList(CPDF_PageObjects* pObjs, const CFX_AffineMatrix* pObject2Device)
970 {
971     _PDF_RenderItem* pItem = m_ContentList.AddSpace();
972     pItem->m_pObjectList = pObjs;
973     if (pObject2Device) {
974         pItem->m_Matrix = *pObject2Device;
975     } else {
976         pItem->m_Matrix.SetIdentity();
977     }
978 }
Render(CFX_RenderDevice * pDevice,const CPDF_RenderOptions * pOptions,const CFX_AffineMatrix * pLastMatrix)979 void CPDF_RenderContext::Render(CFX_RenderDevice* pDevice, const CPDF_RenderOptions* pOptions,
980                                 const CFX_AffineMatrix* pLastMatrix)
981 {
982     Render(pDevice, NULL, pOptions, pLastMatrix);
983 }
Render(CFX_RenderDevice * pDevice,const CPDF_PageObject * pStopObj,const CPDF_RenderOptions * pOptions,const CFX_AffineMatrix * pLastMatrix)984 void CPDF_RenderContext::Render(CFX_RenderDevice* pDevice, const CPDF_PageObject* pStopObj,
985                                 const CPDF_RenderOptions* pOptions, const CFX_AffineMatrix* pLastMatrix)
986 {
987     int count = m_ContentList.GetSize();
988     for (int j = 0; j < count; j ++) {
989         pDevice->SaveState();
990         _PDF_RenderItem* pItem = m_ContentList.GetDataPtr(j);
991         if (pLastMatrix) {
992             CFX_AffineMatrix FinalMatrix = pItem->m_Matrix;
993             FinalMatrix.Concat(*pLastMatrix);
994             CPDF_RenderStatus status;
995             status.Initialize(this, pDevice, pLastMatrix, pStopObj, NULL, NULL, pOptions,
996                               pItem->m_pObjectList->m_Transparency, FALSE, NULL);
997             status.RenderObjectList(pItem->m_pObjectList, &FinalMatrix);
998             if (status.m_Options.m_Flags & RENDER_LIMITEDIMAGECACHE) {
999                 m_pPageCache->CacheOptimization(status.m_Options.m_dwLimitCacheSize);
1000             }
1001             if (status.m_bStopped) {
1002                 pDevice->RestoreState();
1003                 break;
1004             }
1005         } else {
1006             CPDF_RenderStatus status;
1007             status.Initialize(this, pDevice, NULL, pStopObj, NULL, NULL, pOptions,
1008                               pItem->m_pObjectList->m_Transparency, FALSE, NULL);
1009             status.RenderObjectList(pItem->m_pObjectList, &pItem->m_Matrix);
1010             if (status.m_Options.m_Flags & RENDER_LIMITEDIMAGECACHE) {
1011                 m_pPageCache->CacheOptimization(status.m_Options.m_dwLimitCacheSize);
1012             }
1013             if (status.m_bStopped) {
1014                 pDevice->RestoreState();
1015                 break;
1016             }
1017         }
1018         pDevice->RestoreState();
1019     }
1020 }
DrawObjectList(CFX_RenderDevice * pDevice,CPDF_PageObjects * pObjs,const CFX_AffineMatrix * pObject2Device,const CPDF_RenderOptions * pOptions)1021 void CPDF_RenderContext::DrawObjectList(CFX_RenderDevice* pDevice, CPDF_PageObjects* pObjs,
1022                                         const CFX_AffineMatrix* pObject2Device, const CPDF_RenderOptions* pOptions)
1023 {
1024     AppendObjectList(pObjs, pObject2Device);
1025     Render(pDevice, pOptions);
1026 }
CPDF_ProgressiveRenderer()1027 CPDF_ProgressiveRenderer::CPDF_ProgressiveRenderer()
1028 {
1029     m_pRenderer = NULL;
1030     m_pContext = NULL;
1031     m_pDevice = NULL;
1032     m_Status = Ready;
1033 }
~CPDF_ProgressiveRenderer()1034 CPDF_ProgressiveRenderer::~CPDF_ProgressiveRenderer()
1035 {
1036     Clear();
1037 }
Clear()1038 void CPDF_ProgressiveRenderer::Clear()
1039 {
1040     if (m_pRenderer) {
1041         delete m_pRenderer;
1042         m_pDevice->RestoreState();
1043         m_pRenderer = NULL;
1044     }
1045     m_Status = Ready;
1046 }
Start(CPDF_RenderContext * pContext,CFX_RenderDevice * pDevice,const CPDF_RenderOptions * pOptions,IFX_Pause * pPause,FX_BOOL bDropObjects)1047 void CPDF_ProgressiveRenderer::Start(CPDF_RenderContext* pContext, CFX_RenderDevice* pDevice,
1048                                      const CPDF_RenderOptions* pOptions, IFX_Pause* pPause, FX_BOOL bDropObjects)
1049 {
1050     if (m_Status != Ready) {
1051         m_Status = Failed;
1052         return;
1053     }
1054     m_pContext = pContext;
1055     m_pDevice = pDevice;
1056     m_pOptions = pOptions;
1057     m_bDropObjects = bDropObjects;
1058     if (pContext == NULL || pDevice == NULL) {
1059         m_Status = Failed;
1060         return;
1061     }
1062     m_Status = ToBeContinued;
1063     m_ObjectPos = NULL;
1064     m_LayerIndex = 0;
1065     m_ObjectIndex = 0;
1066     m_PrevLastPos = NULL;
1067     Continue(pPause);
1068 }
1069 #define RENDER_STEP_LIMIT 100
Continue(IFX_Pause * pPause)1070 void CPDF_ProgressiveRenderer::Continue(IFX_Pause* pPause)
1071 {
1072     if (m_Status != ToBeContinued) {
1073         return;
1074     }
1075     FX_DWORD nLayers = m_pContext->m_ContentList.GetSize();
1076     for (; m_LayerIndex < nLayers; m_LayerIndex ++) {
1077         _PDF_RenderItem* pItem = m_pContext->m_ContentList.GetDataPtr(m_LayerIndex);
1078         FX_POSITION LastPos = pItem->m_pObjectList->GetLastObjectPosition();
1079         if (m_ObjectPos == NULL) {
1080             if (LastPos == m_PrevLastPos) {
1081                 if (!pItem->m_pObjectList->IsParsed()) {
1082                     pItem->m_pObjectList->ContinueParse(pPause);
1083                     if (!pItem->m_pObjectList->IsParsed()) {
1084                         return;
1085                     }
1086                     LastPos = pItem->m_pObjectList->GetLastObjectPosition();
1087                 }
1088             }
1089             if (LastPos == m_PrevLastPos) {
1090                 if (m_pRenderer) {
1091                     delete m_pRenderer;
1092                     m_pRenderer = NULL;
1093                     m_pDevice->RestoreState();
1094                     m_ObjectPos = NULL;
1095                     m_PrevLastPos = NULL;
1096                 }
1097                 continue;
1098             }
1099             if (m_PrevLastPos) {
1100                 m_ObjectPos = m_PrevLastPos;
1101                 pItem->m_pObjectList->GetNextObject(m_ObjectPos);
1102             } else {
1103                 m_ObjectPos = pItem->m_pObjectList->GetFirstObjectPosition();
1104             }
1105             m_PrevLastPos = LastPos;
1106         }
1107         if (m_pRenderer == NULL) {
1108             m_ObjectPos = pItem->m_pObjectList->GetFirstObjectPosition();
1109             m_ObjectIndex = 0;
1110             m_pRenderer = new CPDF_RenderStatus();
1111             m_pRenderer->Initialize(m_pContext, m_pDevice, NULL, NULL, NULL, NULL,
1112                                     m_pOptions, pItem->m_pObjectList->m_Transparency, m_bDropObjects, NULL);
1113             m_pDevice->SaveState();
1114             m_ClipRect = m_pDevice->GetClipBox();
1115             CFX_AffineMatrix device2object;
1116             device2object.SetReverse(pItem->m_Matrix);
1117             device2object.TransformRect(m_ClipRect);
1118         }
1119         int objs_to_go = CPDF_ModuleMgr::Get()->GetRenderModule()->GetConfig()->m_RenderStepLimit;
1120         while (m_ObjectPos) {
1121             CPDF_PageObject* pCurObj = pItem->m_pObjectList->GetObjectAt(m_ObjectPos);
1122             if (pCurObj && pCurObj->m_Left <= m_ClipRect.right && pCurObj->m_Right >= m_ClipRect.left &&
1123                     pCurObj->m_Bottom <= m_ClipRect.top && pCurObj->m_Top >= m_ClipRect.bottom) {
1124                 if (m_pRenderer->ContinueSingleObject(pCurObj, &pItem->m_Matrix, pPause)) {
1125                     return;
1126                 }
1127                 if (pCurObj->m_Type == PDFPAGE_IMAGE && m_pRenderer->m_Options.m_Flags & RENDER_LIMITEDIMAGECACHE) {
1128                     m_pContext->GetPageCache()->CacheOptimization(m_pRenderer->m_Options.m_dwLimitCacheSize);
1129                 }
1130                 if (pCurObj->m_Type == PDFPAGE_FORM || pCurObj->m_Type == PDFPAGE_SHADING) {
1131                     objs_to_go = 0;
1132                 } else {
1133                     objs_to_go --;
1134                 }
1135             }
1136             m_ObjectIndex ++;
1137             pItem->m_pObjectList->GetNextObject(m_ObjectPos);
1138             if (objs_to_go == 0) {
1139                 if (pPause && pPause->NeedToPauseNow()) {
1140                     return;
1141                 }
1142                 objs_to_go = CPDF_ModuleMgr::Get()->GetRenderModule()->GetConfig()->m_RenderStepLimit;
1143             }
1144         }
1145         if (!pItem->m_pObjectList->IsParsed()) {
1146             return;
1147         }
1148         delete m_pRenderer;
1149         m_pRenderer = NULL;
1150         m_pDevice->RestoreState();
1151         m_ObjectPos = NULL;
1152         m_PrevLastPos = NULL;
1153         if (pPause && pPause->NeedToPauseNow()) {
1154             m_LayerIndex++;
1155             return;
1156         }
1157     }
1158     m_Status = Done;
1159 }
EstimateProgress()1160 int CPDF_ProgressiveRenderer::EstimateProgress()
1161 {
1162     if (!m_pContext) {
1163         return 0;
1164     }
1165     FX_DWORD nLayers = m_pContext->m_ContentList.GetSize();
1166     int nTotal = 0, nRendered = 0;
1167     for (FX_DWORD layer = 0; layer < nLayers; layer ++) {
1168         _PDF_RenderItem* pItem = m_pContext->m_ContentList.GetDataPtr(layer);
1169         int nObjs = pItem->m_pObjectList->CountObjects();
1170         if (layer == m_LayerIndex) {
1171             nRendered += m_ObjectIndex;
1172         } else if (layer < m_LayerIndex) {
1173             nRendered += nObjs;
1174         }
1175         nTotal += nObjs;
1176     }
1177     if (nTotal == 0) {
1178         return 0;
1179     }
1180     return 100 * nRendered / nTotal;
1181 }
GetTransferFunc(CPDF_Object * pObj)1182 CPDF_TransferFunc* CPDF_DocRenderData::GetTransferFunc(CPDF_Object* pObj)
1183 {
1184     if (pObj == NULL) {
1185         return NULL;
1186     }
1187     CPDF_CountedObject<CPDF_TransferFunc*>* pTransferCounter;
1188     if (!m_TransferFuncMap.Lookup(pObj, pTransferCounter)) {
1189         CPDF_TransferFunc* pTransfer = NULL;
1190         CPDF_Function* pFuncs[3] = {NULL, NULL, NULL};
1191         FX_BOOL bUniTransfer = TRUE;
1192         int i;
1193         FX_BOOL bIdentity = TRUE;
1194         if (pObj->GetType() == PDFOBJ_ARRAY) {
1195             bUniTransfer = FALSE;
1196             CPDF_Array* pArray = (CPDF_Array*)pObj;
1197             if (pArray->GetCount() < 3) {
1198                 return NULL;
1199             }
1200             for (FX_DWORD i = 0; i < 3; i ++) {
1201                 pFuncs[2 - i] = CPDF_Function::Load(pArray->GetElementValue(i));
1202                 if (pFuncs[2 - i] == NULL) {
1203                     return NULL;
1204                 }
1205             }
1206         } else {
1207             pFuncs[0] = CPDF_Function::Load(pObj);
1208             if (pFuncs[0] == NULL) {
1209                 return NULL;
1210             }
1211         }
1212         pTransfer = new CPDF_TransferFunc;
1213         pTransfer->m_pPDFDoc = m_pPDFDoc;
1214         pTransferCounter = new CPDF_CountedObject<CPDF_TransferFunc*>;
1215         pTransferCounter->m_nCount = 1;
1216         pTransferCounter->m_Obj = pTransfer;
1217         m_TransferFuncMap.SetAt(pObj, pTransferCounter);
1218         static const int kMaxOutputs = 16;
1219         FX_FLOAT output[kMaxOutputs];
1220         FXSYS_memset32(output, 0, sizeof(output));
1221         FX_FLOAT input;
1222         int noutput;
1223         for (int v = 0; v < 256; v ++) {
1224             input = (FX_FLOAT)v / 255.0f;
1225             if (bUniTransfer) {
1226                 if (pFuncs[0] && pFuncs[0]->CountOutputs() <= kMaxOutputs) {
1227                     pFuncs[0]->Call(&input, 1, output, noutput);
1228                 }
1229                 int o = FXSYS_round(output[0] * 255);
1230                 if (o != v) {
1231                     bIdentity = FALSE;
1232                 }
1233                 for (i = 0; i < 3; i ++) {
1234                     pTransfer->m_Samples[i * 256 + v] = o;
1235                 }
1236             } else
1237                 for (i = 0; i < 3; i ++) {
1238                     if (pFuncs[i] && pFuncs[i]->CountOutputs() <= kMaxOutputs) {
1239                         pFuncs[i]->Call(&input, 1, output, noutput);
1240                         int o = FXSYS_round(output[0] * 255);
1241                         if (o != v) {
1242                             bIdentity = FALSE;
1243                         }
1244                         pTransfer->m_Samples[i * 256 + v] = o;
1245                     } else {
1246                         pTransfer->m_Samples[i * 256 + v] = v;
1247                     }
1248                 }
1249         }
1250         for (i = 0; i < 3; i ++)
1251             if (pFuncs[i]) {
1252                 delete pFuncs[i];
1253             }
1254         pTransfer->m_bIdentity = bIdentity;
1255     }
1256     pTransferCounter->m_nCount++;
1257     return pTransferCounter->m_Obj;
1258 }
ReleaseTransferFunc(CPDF_Object * pObj)1259 void CPDF_DocRenderData::ReleaseTransferFunc(CPDF_Object* pObj)
1260 {
1261     CPDF_CountedObject<CPDF_TransferFunc*>* pTransferCounter;
1262     if (!m_TransferFuncMap.Lookup(pObj, pTransferCounter)) {
1263         return;
1264     }
1265     pTransferCounter->m_nCount--;
1266 }
CPDF_RenderConfig()1267 CPDF_RenderConfig::CPDF_RenderConfig()
1268 {
1269     m_HalftoneLimit = 0;
1270     m_RenderStepLimit = 100;
1271 }
~CPDF_RenderConfig()1272 CPDF_RenderConfig::~CPDF_RenderConfig()
1273 {
1274 }
CPDF_DeviceBuffer()1275 CPDF_DeviceBuffer::CPDF_DeviceBuffer()
1276 {
1277     m_pBitmap = NULL;
1278     m_pDevice = NULL;
1279     m_pContext = NULL;
1280     m_pObject = NULL;
1281 }
~CPDF_DeviceBuffer()1282 CPDF_DeviceBuffer::~CPDF_DeviceBuffer()
1283 {
1284     if (m_pBitmap) {
1285         delete m_pBitmap;
1286     }
1287 }
Initialize(CPDF_RenderContext * pContext,CFX_RenderDevice * pDevice,FX_RECT * pRect,const CPDF_PageObject * pObj,int max_dpi)1288 FX_BOOL CPDF_DeviceBuffer::Initialize(CPDF_RenderContext* pContext, CFX_RenderDevice* pDevice, FX_RECT* pRect,
1289                                       const CPDF_PageObject* pObj, int max_dpi)
1290 {
1291     m_pDevice = pDevice;
1292     m_pContext = pContext;
1293     m_Rect = *pRect;
1294     m_pObject = pObj;
1295     m_Matrix.TranslateI(-pRect->left, -pRect->top);
1296 #if _FXM_PLATFORM_ != _FXM_PLATFORM_APPLE_
1297     int horz_size = pDevice->GetDeviceCaps(FXDC_HORZ_SIZE);
1298     int vert_size = pDevice->GetDeviceCaps(FXDC_VERT_SIZE);
1299     if (horz_size && vert_size && max_dpi) {
1300         int dpih = pDevice->GetDeviceCaps(FXDC_PIXEL_WIDTH) * 254 / (horz_size * 10);
1301         int dpiv = pDevice->GetDeviceCaps(FXDC_PIXEL_HEIGHT) * 254 / (vert_size * 10);
1302         if (dpih > max_dpi) {
1303             m_Matrix.Scale((FX_FLOAT)(max_dpi) / dpih, 1.0f);
1304         }
1305         if (dpiv > max_dpi) {
1306             m_Matrix.Scale(1.0f, (FX_FLOAT)(max_dpi) / (FX_FLOAT)dpiv);
1307         }
1308     }
1309 #endif
1310     CFX_Matrix ctm = m_pDevice->GetCTM();
1311     FX_FLOAT fScaleX = FXSYS_fabs(ctm.a);
1312     FX_FLOAT fScaleY = FXSYS_fabs(ctm.d);
1313     m_Matrix.Concat(fScaleX, 0, 0, fScaleY, 0, 0);
1314     CFX_FloatRect rect(*pRect);
1315     m_Matrix.TransformRect(rect);
1316     FX_RECT bitmap_rect = rect.GetOutterRect();
1317     m_pBitmap = new CFX_DIBitmap;
1318     m_pBitmap->Create(bitmap_rect.Width(), bitmap_rect.Height(), FXDIB_Argb);
1319     return TRUE;
1320 }
OutputToDevice()1321 void CPDF_DeviceBuffer::OutputToDevice()
1322 {
1323     if (m_pDevice->GetDeviceCaps(FXDC_RENDER_CAPS) & FXRC_GET_BITS) {
1324         if (m_Matrix.a == 1.0f && m_Matrix.d == 1.0f) {
1325             m_pDevice->SetDIBits(m_pBitmap, m_Rect.left, m_Rect.top);
1326         } else {
1327             m_pDevice->StretchDIBits(m_pBitmap, m_Rect.left, m_Rect.top, m_Rect.Width(), m_Rect.Height());
1328         }
1329     } else {
1330         CFX_DIBitmap buffer;
1331         m_pDevice->CreateCompatibleBitmap(&buffer, m_pBitmap->GetWidth(), m_pBitmap->GetHeight());
1332         m_pContext->GetBackground(&buffer, m_pObject, NULL, &m_Matrix);
1333         buffer.CompositeBitmap(0, 0, buffer.GetWidth(), buffer.GetHeight(), m_pBitmap, 0, 0);
1334         m_pDevice->StretchDIBits(&buffer, m_Rect.left, m_Rect.top, m_Rect.Width(), m_Rect.Height());
1335     }
1336 }
CPDF_ScaledRenderBuffer()1337 CPDF_ScaledRenderBuffer::CPDF_ScaledRenderBuffer()
1338 {
1339     m_pBitmapDevice = NULL;
1340 }
~CPDF_ScaledRenderBuffer()1341 CPDF_ScaledRenderBuffer::~CPDF_ScaledRenderBuffer()
1342 {
1343     if (m_pBitmapDevice) {
1344         delete m_pBitmapDevice;
1345     }
1346 }
1347 #define _FPDFAPI_IMAGESIZE_LIMIT_	(30 * 1024 * 1024)
Initialize(CPDF_RenderContext * pContext,CFX_RenderDevice * pDevice,FX_RECT * pRect,const CPDF_PageObject * pObj,const CPDF_RenderOptions * pOptions,int max_dpi)1348 FX_BOOL CPDF_ScaledRenderBuffer::Initialize(CPDF_RenderContext* pContext, CFX_RenderDevice* pDevice, FX_RECT* pRect,
1349         const CPDF_PageObject* pObj, const CPDF_RenderOptions *pOptions, int max_dpi)
1350 {
1351     FXSYS_assert(pRect != NULL);
1352     m_pDevice = pDevice;
1353     if (m_pDevice->GetDeviceCaps(FXDC_RENDER_CAPS) & FXRC_GET_BITS) {
1354         return TRUE;
1355     }
1356     m_pContext = pContext;
1357     m_Rect = *pRect;
1358     m_pObject = pObj;
1359     m_Matrix.TranslateI(-pRect->left, -pRect->top);
1360     int horz_size = pDevice->GetDeviceCaps(FXDC_HORZ_SIZE);
1361     int vert_size = pDevice->GetDeviceCaps(FXDC_VERT_SIZE);
1362     if (horz_size && vert_size && max_dpi) {
1363         int dpih = pDevice->GetDeviceCaps(FXDC_PIXEL_WIDTH) * 254 / (horz_size * 10);
1364         int dpiv = pDevice->GetDeviceCaps(FXDC_PIXEL_HEIGHT) * 254 / (vert_size * 10);
1365         if (dpih > max_dpi) {
1366             m_Matrix.Scale((FX_FLOAT)(max_dpi) / dpih, 1.0f);
1367         }
1368         if (dpiv > max_dpi) {
1369             m_Matrix.Scale(1.0f, (FX_FLOAT)(max_dpi) / (FX_FLOAT)dpiv);
1370         }
1371     }
1372     m_pBitmapDevice = new CFX_FxgeDevice;
1373     FXDIB_Format dibFormat = FXDIB_Rgb;
1374     FX_INT32 bpp = 24;
1375     if (m_pDevice->GetDeviceCaps(FXDC_RENDER_CAPS) & FXRC_ALPHA_OUTPUT) {
1376         dibFormat = FXDIB_Argb;
1377         bpp = 32;
1378     }
1379     CFX_FloatRect rect;
1380     FX_INT32 iWidth, iHeight, iPitch;
1381     while (1) {
1382         rect = *pRect;
1383         m_Matrix.TransformRect(rect);
1384         FX_RECT bitmap_rect = rect.GetOutterRect();
1385         iWidth = bitmap_rect.Width();
1386         iHeight = bitmap_rect.Height();
1387         iPitch = (iWidth * bpp + 31) / 32 * 4;
1388         if (iWidth * iHeight < 1) {
1389             return FALSE;
1390         }
1391         if (iPitch * iHeight <= _FPDFAPI_IMAGESIZE_LIMIT_ &&
1392                 m_pBitmapDevice->Create(iWidth, iHeight, dibFormat)) {
1393             break;
1394         }
1395         m_Matrix.Scale(0.5f, 0.5f);
1396     }
1397     m_pContext->GetBackground(m_pBitmapDevice->GetBitmap(), m_pObject, pOptions, &m_Matrix);
1398     return TRUE;
1399 }
OutputToDevice()1400 void CPDF_ScaledRenderBuffer::OutputToDevice()
1401 {
1402     if (m_pBitmapDevice) {
1403         m_pDevice->StretchDIBits(m_pBitmapDevice->GetBitmap(), m_Rect.left, m_Rect.top, m_Rect.Width(), m_Rect.Height());
1404     }
1405 }
CheckObjectVisible(const CPDF_PageObject * pObj)1406 FX_BOOL IPDF_OCContext::CheckObjectVisible(const CPDF_PageObject* pObj)
1407 {
1408     const CPDF_ContentMarkData* pData = pObj->m_ContentMark;
1409     int nItems = pData->CountItems();
1410     for (int i = 0; i < nItems; i ++) {
1411         CPDF_ContentMarkItem& item = pData->GetItem(i);
1412         if (item.GetName() == FX_BSTRC("OC") && item.GetParamType() == CPDF_ContentMarkItem::PropertiesDict) {
1413             CPDF_Dictionary* pOCG = (CPDF_Dictionary*)item.GetParam();
1414             if (!CheckOCGVisible(pOCG)) {
1415                 return FALSE;
1416             }
1417         }
1418     }
1419     return TRUE;
1420 }
1421