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| 1 #include "SkPodofoParsedPDF.h" |
| 2 |
| 3 #include "SkPdfPodofoTokenizer.h" |
| 4 #include "SkPdfHeaders_autogen.h" |
| 5 #include "SkPdfMapper_autogen.h" |
| 6 #include "SkPdfBasics.h" |
| 7 #include "SkPdfParser.h" |
| 8 |
| 9 #include "podofo.h" |
| 10 |
| 11 SkPodofoParsedPDF::SkPodofoParsedPDF(const char* path) : fDoc(new PoDoFo::PdfMem
Document(path)) |
| 12 , fMapper(new SkPdfMapper
(this)) {} |
| 13 |
| 14 SkPodofoParsedPDF::~SkPodofoParsedPDF() { |
| 15 delete fDoc; |
| 16 delete fMapper; |
| 17 } |
| 18 |
| 19 int SkPodofoParsedPDF::pages() const { |
| 20 return fDoc->GetPageCount(); |
| 21 } |
| 22 |
| 23 double SkPodofoParsedPDF::width(int page) const { |
| 24 PoDoFo::PdfRect rect = fDoc->GetPage(page)->GetMediaBox(); |
| 25 return rect.GetWidth() + rect.GetLeft(); |
| 26 } |
| 27 |
| 28 double SkPodofoParsedPDF::height(int page) const { |
| 29 PoDoFo::PdfRect rect = fDoc->GetPage(page)->GetMediaBox(); |
| 30 return rect.GetHeight() + rect.GetBottom(); |
| 31 } |
| 32 |
| 33 const SkPdfResourceDictionary* SkPodofoParsedPDF::pageResources(int page) const
{ |
| 34 SkPdfPageObjectDictionary* pg = NULL; |
| 35 SkPdfObject* obj = make(fDoc->GetPage(page)->GetObject()); |
| 36 fMapper->mapPageObjectDictionary(obj, &pg); |
| 37 return pg ? pg->Resources() : NULL; |
| 38 } |
| 39 |
| 40 SkRect SkPodofoParsedPDF::MediaBox(int page) const { |
| 41 PoDoFo::PdfRect rect = fDoc->GetPage(page)->GetMediaBox(); |
| 42 SkRect skrect = SkRect::MakeLTRB(SkDoubleToScalar(rect.GetLeft()), |
| 43 SkDoubleToScalar(rect.GetBottom()), |
| 44 SkDoubleToScalar(rect.GetLeft() + rect.GetW
idth()), |
| 45 SkDoubleToScalar(rect.GetBottom() + rect.Ge
tHeight())); |
| 46 return skrect; |
| 47 } |
| 48 |
| 49 |
| 50 SkPdfPodofoTokenizer* SkPodofoParsedPDF::tokenizerOfPage(int page) const { |
| 51 PoDoFo::PdfContentsTokenizer* t = new PoDoFo::PdfContentsTokenizer(fDoc->Get
Page(page)); |
| 52 return new SkPdfPodofoTokenizer(this, t); |
| 53 } |
| 54 |
| 55 SkPdfPodofoTokenizer* SkPodofoParsedPDF::tokenizerOfStream(const SkPdfStream* st
ream) const { |
| 56 if (stream == NULL) { |
| 57 return NULL; |
| 58 } |
| 59 |
| 60 char* buffer = NULL; |
| 61 long len = 0; |
| 62 stream->GetFilteredCopy(&buffer, &len); |
| 63 return tokenizerOfBuffer(buffer, len); |
| 64 } |
| 65 |
| 66 SkPdfPodofoTokenizer* SkPodofoParsedPDF::tokenizerOfBuffer(char* buffer, size_t
len) const { |
| 67 PoDoFo::PdfContentsTokenizer* t = new PoDoFo::PdfContentsTokenizer(buffer, l
en); |
| 68 return new SkPdfPodofoTokenizer(this, t); |
| 69 } |
| 70 |
| 71 size_t SkPodofoParsedPDF::objects() const { |
| 72 return fDoc->GetObjects().GetSize(); |
| 73 } |
| 74 |
| 75 const SkPdfObject* SkPodofoParsedPDF::object(int i) const { |
| 76 PoDoFo::PdfVecObjects& objects = (PoDoFo::PdfVecObjects&)fDoc->GetObjects(); |
| 77 return make(objects[i]); |
| 78 } |
| 79 |
| 80 SkPdfObject* SkPodofoParsedPDF::make(PoDoFo::PdfObject* obj) const { |
| 81 return new SkPdfObject(this, obj); |
| 82 } |
| 83 |
| 84 const SkPdfObject* SkPodofoParsedPDF::make(const PoDoFo::PdfObject* obj) const { |
| 85 return new SkPdfObject(this, obj); |
| 86 } |
| 87 |
| 88 const SkPdfMapper* SkPodofoParsedPDF::mapper() const { |
| 89 return fMapper; |
| 90 } |
| 91 |
| 92 SkPdfNumber* SkPodofoParsedPDF::createNumber(double number) const { |
| 93 return new SkPdfNumber(this, new PoDoFo::PdfObject(PoDoFo::PdfVariant(number
))); |
| 94 } |
| 95 |
| 96 SkPdfInteger* SkPodofoParsedPDF::createInteger(int value) const { |
| 97 return new SkPdfInteger(this, new PoDoFo::PdfObject(PoDoFo::PdfVariant((PoDo
Fo::pdf_int64)value))); |
| 98 } |
| 99 |
| 100 SkPdfString* SkPodofoParsedPDF::createString(char* sz, size_t len) const { |
| 101 // TODO(edisonn): NYI |
| 102 return NULL; |
| 103 } |
| 104 |
| 105 PdfContext* gPdfContext = NULL; |
| 106 |
| 107 void SkPodofoParsedPDF::drawPage(int page, SkCanvas* canvas) const { |
| 108 SkPdfPodofoTokenizer* tokenizer = tokenizerOfPage(page); |
| 109 |
| 110 PdfContext pdfContext(this); |
| 111 pdfContext.fOriginalMatrix = SkMatrix::I(); |
| 112 pdfContext.fGraphicsState.fResources = pageResources(page); |
| 113 |
| 114 gPdfContext = &pdfContext; |
| 115 |
| 116 // TODO(edisonn): get matrix stuff right. |
| 117 // TODO(edisonn): add DPI/scale/zoom. |
| 118 SkScalar z = SkIntToScalar(0); |
| 119 SkRect rect = MediaBox(page); |
| 120 SkScalar w = rect.width(); |
| 121 SkScalar h = rect.height(); |
| 122 |
| 123 SkPoint pdfSpace[4] = {SkPoint::Make(z, z), SkPoint::Make(w, z), SkPoint::Ma
ke(w, h), SkPoint::Make(z, h)}; |
| 124 // SkPoint skiaSpace[4] = {SkPoint::Make(z, h), SkPoint::Make(w,
h), SkPoint::Make(w, z), SkPoint::Make(z, z)}; |
| 125 |
| 126 // TODO(edisonn): add flag for this app to create sourunding buffer zone |
| 127 // TODO(edisonn): add flagg for no clipping. |
| 128 // Use larger image to make sure we do not draw anything outside of page |
| 129 // could be used in tests. |
| 130 |
| 131 #ifdef PDF_DEBUG_3X |
| 132 SkPoint skiaSpace[4] = {SkPoint::Make(w+z, h+h), SkPoint::Make(w+w, h+h), Sk
Point::Make(w+w, h+z), SkPoint::Make(w+z, h+z)}; |
| 133 #else |
| 134 SkPoint skiaSpace[4] = {SkPoint::Make(z, h), SkPoint::Make(w, h), SkPoint::M
ake(w, z), SkPoint::Make(z, z)}; |
| 135 #endif |
| 136 //SkPoint pdfSpace[2] = {SkPoint::Make(z, z), SkPoint::Make(w, h)}; |
| 137 //SkPoint skiaSpace[2] = {SkPoint::Make(w, z), SkPoint::Make(z, h)}; |
| 138 |
| 139 //SkPoint pdfSpace[2] = {SkPoint::Make(z, z), SkPoint::Make(z, h)}; |
| 140 //SkPoint skiaSpace[2] = {SkPoint::Make(z, h), SkPoint::Make(z, z)}; |
| 141 |
| 142 //SkPoint pdfSpace[3] = {SkPoint::Make(z, z), SkPoint::Make(z, h), SkPoint::
Make(w, h)}; |
| 143 //SkPoint skiaSpace[3] = {SkPoint::Make(z, h), SkPoint::Make(z, z), SkPoint:
:Make(w, 0)}; |
| 144 |
| 145 SkAssertResult(pdfContext.fOriginalMatrix.setPolyToPoly(pdfSpace, skiaSpace,
4)); |
| 146 SkTraceMatrix(pdfContext.fOriginalMatrix, "Original matrix"); |
| 147 |
| 148 |
| 149 pdfContext.fGraphicsState.fMatrix = pdfContext.fOriginalMatrix; |
| 150 pdfContext.fGraphicsState.fMatrixTm = pdfContext.fGraphicsState.fMatrix; |
| 151 pdfContext.fGraphicsState.fMatrixTlm = pdfContext.fGraphicsState.fMatrix; |
| 152 |
| 153 canvas->setMatrix(pdfContext.fOriginalMatrix); |
| 154 |
| 155 #ifndef PDF_DEBUG_NO_PAGE_CLIPING |
| 156 canvas->clipRect(SkRect::MakeXYWH(z, z, w, h), SkRegion::kIntersect_Op, true
); |
| 157 #endif |
| 158 |
| 159 // erase with red before? |
| 160 // SkPaint paint; |
| 161 // paint.setColor(SK_ColorRED); |
| 162 // canvas->drawRect(rect, paint); |
| 163 |
| 164 PdfMainLooper looper(NULL, tokenizer, &pdfContext, canvas); |
| 165 looper.loop(); |
| 166 |
| 167 delete tokenizer; |
| 168 |
| 169 canvas->flush(); |
| 170 } |
| 171 |
| 172 // TODO(edisonn): move in trace util. |
| 173 #include "SkMatrix.h" |
| 174 #include "SkRect.h" |
| 175 |
| 176 #ifdef PDF_TRACE |
| 177 void SkTraceMatrix(const SkMatrix& matrix, const char* sz) { |
| 178 printf("SkMatrix %s ", sz); |
| 179 for (int i = 0 ; i < 9 ; i++) { |
| 180 printf("%f ", SkScalarToDouble(matrix.get(i))); |
| 181 } |
| 182 printf("\n"); |
| 183 } |
| 184 |
| 185 void SkTraceRect(const SkRect& rect, const char* sz) { |
| 186 printf("SkRect %s ", sz); |
| 187 printf("x = %f ", SkScalarToDouble(rect.x())); |
| 188 printf("y = %f ", SkScalarToDouble(rect.y())); |
| 189 printf("w = %f ", SkScalarToDouble(rect.width())); |
| 190 printf("h = %f ", SkScalarToDouble(rect.height())); |
| 191 printf("\n"); |
| 192 } |
| 193 #endif |
| 194 |
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