/* * Copyright 2013 Google Inc. * * Use of this source code is governed by a BSD-style license that can be * found in the LICENSE file. */ #include "SkCanvas.h" #include "SkDevice.h" #include "SkForceLinking.h" #include "SkGraphics.h" #include "SkImageDecoder.h" #include "SkImageEncoder.h" #include "SkOSFile.h" #include "SkPicture.h" #include "SkStream.h" #include "SkTypeface.h" #include "SkTArray.h" #include "picture_utils.h" #include #include #include #include "podofo.h" using namespace PoDoFo; __SK_FORCE_IMAGE_DECODER_LINKING; // TODO(edisonn): tool, show what objects were read at least, show the ones not even read // keep for each object pos in file // plug in for VS? syntax coloring, show selected object ... from the text, or from rendered x,y // TODO(edisonn): security - validate all the user input, all pdf! // TODO(edisonn): put drawtext in #ifdefs, so comparations will ignore minor changes in text positioning and font // this way, we look more at other features and layout in diffs // TODO(edisonn): move trace dump in the get functions, and mapper ones too so it ghappens automatically /* #ifdef PDF_TRACE std::string str; pdfContext->fGraphicsState.fResources->podofo()->ToString(str); printf("Print Tf Resources: %s\n", str.c_str()); #endif */ #include "SkPdfHeaders_autogen.h" #include "SkPdfMapper_autogen.h" #include "SkPdfParser.h" #include "SkPdfBasics.h" #include "SkPdfUtils.h" #include "SkPdfFont.h" /* * TODO(edisonn): * - all font types and all ppdf font features * - word spacing * - load font for baidu.pdf * - load font for youtube.pdf * - parser for pdf from the definition already available in pdfspec_autogen.py * - all docs from ~/work * - encapsulate podofo in the pdf api so the skpdf does not know anything about podofo ... in progress * - load gs/ especially smask and already known prop (skp) ... in progress * - wrapper on classes for customizations? e.g. * SkPdfPageObjectVanila - has only the basic loaders/getters * SkPdfPageObject : public SkPdfPageObjectVanila, extends, and I can add customizations here * need to find a nice object model for all this with constructors and factories * - deal with inheritable automatically ? * - deal with specific type in spec directly, add all dictionary types to known types */ using namespace std; using namespace PoDoFo; // Utilities static void setup_bitmap(SkBitmap* bitmap, int width, int height, SkColor color = SK_ColorWHITE) { bitmap->setConfig(SkBitmap::kARGB_8888_Config, width, height); bitmap->allocPixels(); bitmap->eraseColor(color); } // TODO(edisonn): synonyms? DeviceRGB and RGB ... int GetColorSpaceComponents(const std::string& colorSpace) { if (colorSpace == "DeviceCMYK") { return 4; } else if (colorSpace == "DeviceGray" || colorSpace == "CalGray" || colorSpace == "Indexed") { return 1; } else if (colorSpace == "DeviceRGB" || colorSpace == "CalRGB" || colorSpace == "Lab") { return 3; } else { return 0; } } SkMatrix SkMatrixFromPdfMatrix(double array[6]) { SkMatrix matrix; matrix.setAll(SkDoubleToScalar(array[0]), SkDoubleToScalar(array[2]), SkDoubleToScalar(array[4]), SkDoubleToScalar(array[1]), SkDoubleToScalar(array[3]), SkDoubleToScalar(array[5]), SkDoubleToScalar(0), SkDoubleToScalar(0), SkDoubleToScalar(1)); return matrix; } SkMatrix SkMatrixFromPdfArray(SkPdfArray* pdfArray) { double array[6]; // TODO(edisonn): security issue, ret if size() != 6 for (int i = 0; i < 6; i++) { const SkPdfObject* elem = pdfArray->operator [](i); if (elem == NULL || (!elem->asNumber() && !elem->asInteger())) { return SkMatrix::I(); // TODO(edisonn): report issue } array[i] = elem->asNumber() ? elem->asNumber()->value() : elem->asInteger()->value(); } return SkMatrixFromPdfMatrix(array); } SkBitmap* gDumpBitmap = NULL; SkCanvas* gDumpCanvas = NULL; char gLastKeyword[100] = ""; int gLastOpKeyword = -1; char allOpWithVisualEffects[100] = ",S,s,f,F,f*,B,B*,b,b*,n,Tj,TJ,\',\",d0,d1,sh,EI,Do,EX,"; int gReadOp = 0; bool hasVisualEffect(const char* pdfOp) { return true; if (*pdfOp == '\0') return false; char markedPdfOp[100] = ","; strcat(markedPdfOp, pdfOp); strcat(markedPdfOp, ","); return (strstr(allOpWithVisualEffects, markedPdfOp) != NULL); } // TODO(edisonn): Pass PdfContext and SkCanvasd only with the define for instrumentation. static bool readToken(SkPdfPodofoTokenizer* fTokenizer, PdfToken* token) { bool ret = fTokenizer->readToken(token); gReadOp++; #ifdef PDF_TRACE_DIFF_IN_PNG // TODO(edisonn): compare with old bitmap, and save only new bits are available, and save // the numbar and name of last operation, so the file name will reflect op that changed. if (hasVisualEffect(gLastKeyword)) { // TODO(edisonn): and has dirty bits. gDumpCanvas->flush(); SkBitmap bitmap; setup_bitmap(&bitmap, gDumpBitmap->width(), gDumpBitmap->height()); memcpy(bitmap.getPixels(), gDumpBitmap->getPixels(), gDumpBitmap->getSize()); SkAutoTUnref device(SkNEW_ARGS(SkDevice, (bitmap))); SkCanvas canvas(device); // draw context stuff here SkPaint blueBorder; blueBorder.setColor(SK_ColorBLUE); blueBorder.setStyle(SkPaint::kStroke_Style); blueBorder.setTextSize(SkDoubleToScalar(20)); SkString str; const SkClipStack* clipStack = gDumpCanvas->getClipStack(); if (clipStack) { SkClipStack::Iter iter(*clipStack, SkClipStack::Iter::kBottom_IterStart); const SkClipStack::Element* elem; double y = 0; int total = 0; while (elem = iter.next()) { total++; y += 30; switch (elem->getType()) { case SkClipStack::Element::kRect_Type: canvas.drawRect(elem->getRect(), blueBorder); canvas.drawText("Rect Clip", strlen("Rect Clip"), SkDoubleToScalar(10), SkDoubleToScalar(y), blueBorder); break; case SkClipStack::Element::kPath_Type: canvas.drawPath(elem->getPath(), blueBorder); canvas.drawText("Path Clip", strlen("Path Clip"), SkDoubleToScalar(10), SkDoubleToScalar(y), blueBorder); break; case SkClipStack::Element::kEmpty_Type: canvas.drawText("Empty Clip!!!", strlen("Empty Clip!!!"), SkDoubleToScalar(10), SkDoubleToScalar(y), blueBorder); break; default: canvas.drawText("Unkown Clip!!!", strlen("Unkown Clip!!!"), SkDoubleToScalar(10), SkDoubleToScalar(y), blueBorder); break; } } y += 30; str.printf("Number of clips in stack: %i", total); canvas.drawText(str.c_str(), str.size(), SkDoubleToScalar(10), SkDoubleToScalar(y), blueBorder); } const SkRegion& clipRegion = gDumpCanvas->getTotalClip(); SkPath clipPath; if (clipRegion.getBoundaryPath(&clipPath)) { SkPaint redBorder; redBorder.setColor(SK_ColorRED); redBorder.setStyle(SkPaint::kStroke_Style); canvas.drawPath(clipPath, redBorder); } canvas.flush(); SkString out; // TODO(edisonn): get the image, and overlay on top of it, the clip , grafic state, teh stack, // ... and other properties, to be able to debug th code easily out.appendf("/usr/local/google/home/edisonn/log_view2/step-%i-%s.png", gLastOpKeyword, gLastKeyword); SkImageEncoder::EncodeFile(out.c_str(), bitmap, SkImageEncoder::kPNG_Type, 100); } if (token->fType == kKeyword_TokenType) { strcpy(gLastKeyword, token->fKeyword); gLastOpKeyword = gReadOp; } else { strcpy(gLastKeyword, ""); } #endif return ret; } typedef PdfResult (*PdfOperatorRenderer)(PdfContext*, SkCanvas*, PdfTokenLooper**); map gPdfOps; map gRenderStats[kCount_PdfResult]; char* gRenderStatsNames[kCount_PdfResult] = { "Success", "Partially implemented", "Not yet implemented", "Ignore Error", "Error", "Unsupported/Unknown" }; static SkTypeface* SkTypefaceFromPdfFont(PdfFont* font) { if (font == NULL) { return SkTypeface::CreateFromName("Times New Roman", SkTypeface::kNormal); } PdfObject* fontObject = font->GetObject(); PdfObject* pBaseFont = NULL; // TODO(edisonn): warning, PoDoFo has a bug in PdfFont constructor, does not call InitVars() // for now fixed locally. pBaseFont = fontObject->GetIndirectKey( "BaseFont" ); const char* pszBaseFontName = pBaseFont->GetName().GetName().c_str(); #ifdef PDF_TRACE std::string str; fontObject->ToString(str); printf("Base Font Name: %s\n", pszBaseFontName); printf("Font Object Data: %s\n", str.c_str()); #endif SkTypeface* typeface = SkTypefaceFromPdfStandardFont(pszBaseFontName, font->IsBold(), font->IsItalic()); if (typeface != NULL) { return typeface; } char name[1000]; // HACK strncpy(name, pszBaseFontName, 1000); char* comma = strstr(name, ","); char* dash = strstr(name, "-"); if (comma) *comma = '\0'; if (dash) *dash = '\0'; typeface = SkTypeface::CreateFromName( name, SkTypeface::Style((font->IsBold() ? SkTypeface::kBold : 0) | (font->IsItalic() ? SkTypeface::kItalic : 0))); if (typeface != NULL) { #ifdef PDF_TRACE printf("HACKED FONT found %s\n", name); #endif return typeface; } #ifdef PDF_TRACE printf("FONT_NOT_FOUND %s\n", pszBaseFontName); #endif // TODO(edisonn): Report Warning, NYI return SkTypeface::CreateFromName( "Times New Roman", SkTypeface::Style((font->IsBold() ? SkTypeface::kBold : 0) | (font->IsItalic() ? SkTypeface::kItalic : 0))); } PdfResult DrawText(PdfContext* pdfContext, const SkPdfObject* _str, SkCanvas* canvas) { SkPdfFont* skfont = pdfContext->fGraphicsState.fSkFont; if (skfont == NULL) { skfont = SkPdfFont::Default(); } const SkPdfString* str = _str->asString(); if (str == NULL) { // TODO(edisonn): report warning return kIgnoreError_PdfResult; } SkUnencodedText binary(str); SkDecodedText decoded; if (skfont->encoding() == NULL) { // TODO(edisonn): report warning return kNYI_PdfResult; } skfont->encoding()->decodeText(binary, &decoded); SkPaint paint; // TODO(edisonn): when should fCurFont->GetFontSize() used? When cur is fCurFontSize == 0? // Or maybe just not call setTextSize at all? if (pdfContext->fGraphicsState.fCurFontSize != 0) { paint.setTextSize(SkDoubleToScalar(pdfContext->fGraphicsState.fCurFontSize)); } // if (fCurFont && fCurFont->GetFontScale() != 0) { // paint.setTextScaleX(SkFloatToScalar(fCurFont->GetFontScale() / 100.0)); // } pdfContext->fGraphicsState.applyGraphicsState(&paint, false); canvas->save(); #if 1 SkMatrix matrix = pdfContext->fGraphicsState.fMatrixTm; SkPoint point1; pdfContext->fGraphicsState.fMatrixTm.mapXY(SkIntToScalar(0), SkIntToScalar(0), &point1); SkMatrix mirror; mirror.setTranslate(0, -point1.y()); // TODO(edisonn): fix rotated text, and skewed too mirror.postScale(SK_Scalar1, -SK_Scalar1); // TODO(edisonn): post rotate, skew mirror.postTranslate(0, point1.y()); matrix.postConcat(mirror); canvas->setMatrix(matrix); SkTraceMatrix(matrix, "mirrored"); #endif skfont->drawText(decoded, &paint, pdfContext, canvas); canvas->restore(); return kPartial_PdfResult; } // TODO(edisonn): create header files with declarations! PdfResult PdfOp_q(PdfContext* pdfContext, SkCanvas* canvas, PdfTokenLooper** looper); PdfResult PdfOp_Q(PdfContext* pdfContext, SkCanvas* canvas, PdfTokenLooper** looper); PdfResult PdfOp_Tw(PdfContext* pdfContext, SkCanvas* canvas, PdfTokenLooper** looper); PdfResult PdfOp_Tc(PdfContext* pdfContext, SkCanvas* canvas, PdfTokenLooper** looper); // TODO(edisonn): perf!!! static SkColorTable* getGrayColortable() { static SkColorTable* grayColortable = NULL; if (grayColortable == NULL) { SkPMColor* colors = new SkPMColor[256]; for (int i = 0 ; i < 256; i++) { colors[i] = SkPreMultiplyARGB(255, i, i, i); } grayColortable = new SkColorTable(colors, 256); } return grayColortable; } SkBitmap transferImageStreamToBitmap(unsigned char* uncompressedStream, pdf_long uncompressedStreamLength, int width, int height, int bytesPerLine, int bpc, const std::string& colorSpace, bool transparencyMask) { SkBitmap bitmap; int components = GetColorSpaceComponents(colorSpace); //#define MAX_COMPONENTS 10 int bitsPerLine = width * components * bpc; // TODO(edisonn): assume start of lines are aligned at 32 bits? // Is there a faster way to load the uncompressed stream into a bitmap? // minimal support for now if ((colorSpace == "DeviceRGB" || colorSpace == "RGB") && bpc == 8) { SkColor* uncompressedStreamArgb = (SkColor*)malloc(width * height * sizeof(SkColor)); for (int h = 0 ; h < height; h++) { long i = width * (height - 1 - h); for (int w = 0 ; w < width; w++) { uncompressedStreamArgb[i] = SkColorSetRGB(uncompressedStream[3 * w], uncompressedStream[3 * w + 1], uncompressedStream[3 * w + 2]); i++; } uncompressedStream += bytesPerLine; } bitmap.setConfig(SkBitmap::kARGB_8888_Config, width, height); bitmap.setPixels(uncompressedStreamArgb); } else if ((colorSpace == "DeviceGray" || colorSpace == "Gray") && bpc == 8) { unsigned char* uncompressedStreamA8 = (unsigned char*)malloc(width * height); for (int h = 0 ; h < height; h++) { long i = width * (height - 1 - h); for (int w = 0 ; w < width; w++) { uncompressedStreamA8[i] = transparencyMask ? 255 - uncompressedStream[w] : uncompressedStream[w]; i++; } uncompressedStream += bytesPerLine; } bitmap.setConfig(transparencyMask ? SkBitmap::kA8_Config : SkBitmap::kIndex8_Config, width, height); bitmap.setPixels(uncompressedStreamA8, transparencyMask ? NULL : getGrayColortable()); } // TODO(edisonn): Report Warning, NYI, or error return bitmap; } bool transferImageStreamToARGB(unsigned char* uncompressedStream, pdf_long uncompressedStreamLength, int width, int bytesPerLine, int bpc, const std::string& colorSpace, SkColor** uncompressedStreamArgb, pdf_long* uncompressedStreamLengthInBytesArgb) { int components = GetColorSpaceComponents(colorSpace); //#define MAX_COMPONENTS 10 int bitsPerLine = width * components * bpc; // TODO(edisonn): assume start of lines are aligned at 32 bits? int height = uncompressedStreamLength / bytesPerLine; // minimal support for now if ((colorSpace == "DeviceRGB" || colorSpace == "RGB") && bpc == 8) { *uncompressedStreamLengthInBytesArgb = width * height * 4; *uncompressedStreamArgb = (SkColor*)malloc(*uncompressedStreamLengthInBytesArgb); for (int h = 0 ; h < height; h++) { long i = width * (height - 1 - h); for (int w = 0 ; w < width; w++) { (*uncompressedStreamArgb)[i] = SkColorSetRGB(uncompressedStream[3 * w], uncompressedStream[3 * w + 1], uncompressedStream[3 * w + 2]); i++; } uncompressedStream += bytesPerLine; } return true; } if ((colorSpace == "DeviceGray" || colorSpace == "Gray") && bpc == 8) { *uncompressedStreamLengthInBytesArgb = width * height * 4; *uncompressedStreamArgb = (SkColor*)malloc(*uncompressedStreamLengthInBytesArgb); for (int h = 0 ; h < height; h++) { long i = width * (height - 1 - h); for (int w = 0 ; w < width; w++) { (*uncompressedStreamArgb)[i] = SkColorSetRGB(uncompressedStream[w], uncompressedStream[w], uncompressedStream[w]); i++; } uncompressedStream += bytesPerLine; } return true; } return false; } // utils // TODO(edisonn): add cache, or put the bitmap property directly on the PdfObject // TODO(edisonn): deal with colorSpaces, we could add them to SkBitmap::Config // TODO(edisonn): preserve A1 format that skia knows, + fast convert from 111, 222, 444 to closest // skia format, through a table // this functions returns the image, it does not look at the smask. SkBitmap getImageFromObject(PdfContext* pdfContext, const SkPdfImageDictionary* image, bool transparencyMask) { if (image == NULL) { // TODO(edisonn): report warning to be used in testing. return SkBitmap(); } // TODO (edisonn): Fast Jpeg(DCTDecode) draw, or fast PNG(FlateDecode) draw ... // PdfObject* value = resolveReferenceObject(pdfContext->fPdfDoc, // obj.GetDictionary().GetKey(PdfName("Filter"))); // if (value && value->IsArray() && value->GetArray().GetSize() == 1) { // value = resolveReferenceObject(pdfContext->fPdfDoc, // &value->GetArray()[0]); // } // if (value && value->IsName() && value->GetName().GetName() == "DCTDecode") { // SkStream stream = SkStream:: // SkImageDecoder::Factory() // } long bpc = image->BitsPerComponent(); long width = image->Width(); long height = image->Height(); std::string colorSpace = "DeviceRGB"; // TODO(edisonn): color space can be an array too! if (image->isColorSpaceAName()) { colorSpace = image->getColorSpaceAsName(); } /* bool imageMask = image->imageMask(); if (imageMask) { if (bpc != 0 && bpc != 1) { // TODO(edisonn): report warning to be used in testing. return SkBitmap(); } bpc = 1; } */ char* uncompressedStream = NULL; pdf_long uncompressedStreamLength = 0; PdfResult ret = kPartial_PdfResult; SkPdfStream* stream = NULL; image->doc()->mapper()->mapStream(image, &stream); if (!stream || !stream->GetFilteredCopy(&uncompressedStream, &uncompressedStreamLength) || uncompressedStream == NULL || uncompressedStreamLength == 0) { // TODO(edisonn): report warning to be used in testing. return SkBitmap(); } int bytesPerLine = uncompressedStreamLength / height; #ifdef PDF_TRACE if (uncompressedStreamLength % height != 0) { printf("Warning uncompressedStreamLength % height != 0 !!!\n"); } #endif SkBitmap bitmap = transferImageStreamToBitmap( (unsigned char*)uncompressedStream, uncompressedStreamLength, width, height, bytesPerLine, bpc, colorSpace, transparencyMask); free(uncompressedStream); return bitmap; } SkBitmap getSmaskFromObject(PdfContext* pdfContext, const SkPdfImageDictionary* obj) { const SkPdfImageDictionary* sMask = obj->SMask(); if (sMask) { return getImageFromObject(pdfContext, sMask, true); } // TODO(edisonn): implement GS SMask. Default to empty right now. return pdfContext->fGraphicsState.fSMask; } PdfResult doXObject_Image(PdfContext* pdfContext, SkCanvas* canvas, const SkPdfImageDictionary* skpdfimage) { if (skpdfimage == NULL) { return kIgnoreError_PdfResult; } SkBitmap image = getImageFromObject(pdfContext, skpdfimage, false); SkBitmap sMask = getSmaskFromObject(pdfContext, skpdfimage); canvas->save(); canvas->setMatrix(pdfContext->fGraphicsState.fMatrix); SkRect dst = SkRect::MakeXYWH(SkDoubleToScalar(0.0), SkDoubleToScalar(0.0), SkDoubleToScalar(1.0), SkDoubleToScalar(1.0)); if (sMask.empty()) { canvas->drawBitmapRect(image, dst, NULL); } else { canvas->saveLayer(&dst, NULL); canvas->drawBitmapRect(image, dst, NULL); SkPaint xfer; pdfContext->fGraphicsState.applyGraphicsState(&xfer, false); xfer.setXfermodeMode(SkXfermode::kSrcOut_Mode); // SkXfermode::kSdtOut_Mode canvas->drawBitmapRect(sMask, dst, &xfer); canvas->restore(); } canvas->restore(); return kPartial_PdfResult; } PdfResult doXObject_Form(PdfContext* pdfContext, SkCanvas* canvas, SkPdfType1FormDictionary* skobj) { if (!skobj) { return kIgnoreError_PdfResult; } PdfOp_q(pdfContext, canvas, NULL); canvas->save(); if (skobj->Resources()) { pdfContext->fGraphicsState.fResources = skobj->Resources(); } SkTraceMatrix(pdfContext->fGraphicsState.fMatrix, "Current matrix"); if (skobj->Matrix()) { pdfContext->fGraphicsState.fMatrix.preConcat(*skobj->Matrix()); pdfContext->fGraphicsState.fMatrixTm = pdfContext->fGraphicsState.fMatrix; pdfContext->fGraphicsState.fMatrixTlm = pdfContext->fGraphicsState.fMatrix; // TODO(edisonn) reset matrixTm and matricTlm also? } SkTraceMatrix(pdfContext->fGraphicsState.fMatrix, "Total matrix"); canvas->setMatrix(pdfContext->fGraphicsState.fMatrix); if (skobj->BBox()) { canvas->clipRect(*skobj->BBox(), SkRegion::kIntersect_Op, true); // TODO(edisonn): AA from settings. } // TODO(edisonn): iterate smart on the stream even if it is compressed, tokenize it as we go. // For this PdfContentsTokenizer needs to be extended. SkPdfStream* stream = NULL; skobj->doc()->mapper()->mapStream(skobj, &stream); SkPdfPodofoTokenizer* tokenizer = skobj->doc()->tokenizerOfStream(stream); if (tokenizer != NULL) { PdfMainLooper looper(NULL, tokenizer, pdfContext, canvas); looper.loop(); delete tokenizer; } // TODO(edisonn): should we restore the variable stack at the same state? // There could be operands left, that could be consumed by a parent tokenizer when we pop. canvas->restore(); PdfOp_Q(pdfContext, canvas, NULL); return kPartial_PdfResult; } PdfResult doXObject_PS(PdfContext* pdfContext, SkCanvas* canvas, const PdfObject& obj) { return kNYI_PdfResult; } PdfResult doType3Char(PdfContext* pdfContext, SkCanvas* canvas, SkPdfObject* skobj, SkRect bBox, SkMatrix matrix, double textSize) { if (!skobj) { return kIgnoreError_PdfResult; } PdfOp_q(pdfContext, canvas, NULL); canvas->save(); pdfContext->fGraphicsState.fMatrixTm.preConcat(matrix); pdfContext->fGraphicsState.fMatrixTm.preScale(SkDoubleToScalar(textSize), SkDoubleToScalar(textSize)); pdfContext->fGraphicsState.fMatrix = pdfContext->fGraphicsState.fMatrixTm; pdfContext->fGraphicsState.fMatrixTlm = pdfContext->fGraphicsState.fMatrix; SkTraceMatrix(pdfContext->fGraphicsState.fMatrix, "Total matrix"); canvas->setMatrix(pdfContext->fGraphicsState.fMatrix); SkRect rm = bBox; pdfContext->fGraphicsState.fMatrix.mapRect(&rm); SkTraceRect(rm, "bbox mapped"); canvas->clipRect(bBox, SkRegion::kIntersect_Op, true); // TODO(edisonn): AA from settings. // TODO(edisonn): iterate smart on the stream even if it is compressed, tokenize it as we go. // For this PdfContentsTokenizer needs to be extended. SkPdfStream* stream = NULL; skobj->doc()->mapper()->mapStream(skobj, &stream); SkPdfPodofoTokenizer* tokenizer = skobj->doc()->tokenizerOfStream(stream); if (tokenizer != NULL) { PdfMainLooper looper(NULL, tokenizer, pdfContext, canvas); looper.loop(); delete tokenizer; } // TODO(edisonn): should we restore the variable stack at the same state? // There could be operands left, that could be consumed by a parent tokenizer when we pop. canvas->restore(); PdfOp_Q(pdfContext, canvas, NULL); return kPartial_PdfResult; } // TODO(edisonn): faster, have the property on the SkPdfObject itself? std::set gInRendering; class CheckRecursiveRendering { const void* fUniqueData; public: CheckRecursiveRendering(const SkPdfObject* obj) : fUniqueData(obj->data()) { gInRendering.insert(obj); } ~CheckRecursiveRendering() { //SkASSERT(fObj.fInRendering); gInRendering.erase(fUniqueData); } static bool IsInRendering(const SkPdfObject* obj) { return gInRendering.find(obj->data()) != gInRendering.end(); } }; PdfResult doXObject(PdfContext* pdfContext, SkCanvas* canvas, const SkPdfObject& obj) { if (CheckRecursiveRendering::IsInRendering(&obj)) { // Oops, corrupt PDF! return kIgnoreError_PdfResult; } CheckRecursiveRendering checkRecursion(&obj); // TODO(edisonn): check type SkPdfXObjectDictionary* skobj = NULL; if (!obj.doc()->mapper()->mapXObjectDictionary(&obj, &skobj)) return kIgnoreError_PdfResult; if (!skobj) return kIgnoreError_PdfResult; PdfResult ret = kIgnoreError_PdfResult; switch (skobj->getType()) { case kImageDictionary_SkPdfObjectType: ret = doXObject_Image(pdfContext, canvas, skobj->asImageDictionary()); break; case kType1FormDictionary_SkPdfObjectType: ret = doXObject_Form(pdfContext, canvas, skobj->asType1FormDictionary()); break; //case kObjectDictionaryXObjectPS_SkPdfObjectType: //return doXObject_PS(skxobj.asPS()); } delete skobj; return ret; } PdfResult PdfOp_q(PdfContext* pdfContext, SkCanvas* canvas, PdfTokenLooper** looper) { pdfContext->fStateStack.push(pdfContext->fGraphicsState); canvas->save(); return kOK_PdfResult; } PdfResult PdfOp_Q(PdfContext* pdfContext, SkCanvas* canvas, PdfTokenLooper** looper) { pdfContext->fGraphicsState = pdfContext->fStateStack.top(); pdfContext->fStateStack.pop(); canvas->restore(); return kOK_PdfResult; } PdfResult PdfOp_cm(PdfContext* pdfContext, SkCanvas* canvas, PdfTokenLooper** looper) { double array[6]; for (int i = 0 ; i < 6 ; i++) { array[5 - i] = pdfContext->fObjectStack.top()->asNumber()->value(); pdfContext->fObjectStack.pop(); } // a b // c d // e f // 0 1 // 2 3 // 4 5 // sx ky // kx sy // tx ty SkMatrix matrix = SkMatrixFromPdfMatrix(array); pdfContext->fGraphicsState.fMatrix.preConcat(matrix); #ifdef PDF_TRACE printf("cm "); for (int i = 0 ; i < 6 ; i++) { printf("%f ", array[i]); } printf("\n"); SkTraceMatrix(pdfContext->fGraphicsState.fMatrix, "cm"); #endif return kOK_PdfResult; } //leading TL Set the text leading, Tl //, to leading, which is a number expressed in unscaled text //space units. Text leading is used only by the T*, ', and " operators. Initial value: 0. PdfResult PdfOp_TL(PdfContext* pdfContext, SkCanvas* canvas, PdfTokenLooper** looper) { double ty = pdfContext->fObjectStack.top()->asNumber()->value(); pdfContext->fObjectStack.pop(); pdfContext->fGraphicsState.fTextLeading = ty; return kOK_PdfResult; } PdfResult PdfOp_Td(PdfContext* pdfContext, SkCanvas* canvas, PdfTokenLooper** looper) { double ty = pdfContext->fObjectStack.top()->asNumber()->value(); pdfContext->fObjectStack.pop(); double tx = pdfContext->fObjectStack.top()->asNumber()->value(); pdfContext->fObjectStack.pop(); double array[6] = {1, 0, 0, 1, tx, ty}; SkMatrix matrix = SkMatrixFromPdfMatrix(array); pdfContext->fGraphicsState.fMatrixTm.preConcat(matrix); pdfContext->fGraphicsState.fMatrixTlm.preConcat(matrix); return kPartial_PdfResult; } PdfResult PdfOp_TD(PdfContext* pdfContext, SkCanvas* canvas, PdfTokenLooper** looper) { double ty = pdfContext->fObjectStack.top()->asNumber()->value(); pdfContext->fObjectStack.pop(); double tx = pdfContext->fObjectStack.top()->asNumber()->value(); pdfContext->fObjectStack.pop(); // TODO(edisonn): Create factory methods or constructors so podofo is hidden SkPdfNumber* _ty = pdfContext->fPdfDoc->createNumber(-ty); pdfContext->fObjectStack.push(_ty); PdfOp_TL(pdfContext, canvas, looper); SkPdfNumber* vtx = pdfContext->fPdfDoc->createNumber(tx); pdfContext->fObjectStack.push(vtx); SkPdfNumber* vty = pdfContext->fPdfDoc->createNumber(ty); pdfContext->fObjectStack.push(vty); PdfResult ret = PdfOp_Td(pdfContext, canvas, looper); // TODO(edisonn): delete all the objects after rendering was complete, in this way pdf is rendered faster // and the cleanup can happen while the user looks at the image delete _ty; delete vtx; delete vty; return ret; } PdfResult PdfOp_Tm(PdfContext* pdfContext, SkCanvas* canvas, PdfTokenLooper** looper) { double f = pdfContext->fObjectStack.top()->asNumber()->value(); pdfContext->fObjectStack.pop(); double e = pdfContext->fObjectStack.top()->asNumber()->value(); pdfContext->fObjectStack.pop(); double d = pdfContext->fObjectStack.top()->asNumber()->value(); pdfContext->fObjectStack.pop(); double c = pdfContext->fObjectStack.top()->asNumber()->value(); pdfContext->fObjectStack.pop(); double b = pdfContext->fObjectStack.top()->asNumber()->value(); pdfContext->fObjectStack.pop(); double a = pdfContext->fObjectStack.top()->asNumber()->value(); pdfContext->fObjectStack.pop(); double array[6]; array[0] = a; array[1] = b; array[2] = c; array[3] = d; array[4] = e; array[5] = f; SkMatrix matrix = SkMatrixFromPdfMatrix(array); matrix.postConcat(pdfContext->fGraphicsState.fMatrix); // TODO(edisonn): Text positioning. pdfContext->fGraphicsState.fMatrixTm = matrix; pdfContext->fGraphicsState.fMatrixTlm = matrix;; return kPartial_PdfResult; } //— T* Move to the start of the next line. This operator has the same effect as the code //0 Tl Td //where Tl is the current leading parameter in the text state PdfResult PdfOp_T_star(PdfContext* pdfContext, SkCanvas* canvas, PdfTokenLooper** looper) { SkPdfNumber* zero = pdfContext->fPdfDoc->createNumber(0.0); SkPdfNumber* tl = pdfContext->fPdfDoc->createNumber(pdfContext->fGraphicsState.fTextLeading); pdfContext->fObjectStack.push(zero); pdfContext->fObjectStack.push(tl); PdfResult ret = PdfOp_Td(pdfContext, canvas, looper); delete zero; // TODO(edisonn): do not alocate and delete constants! delete tl; return ret; } PdfResult PdfOp_m(PdfContext* pdfContext, SkCanvas* canvas, PdfTokenLooper** looper) { if (pdfContext->fGraphicsState.fPathClosed) { pdfContext->fGraphicsState.fPath.reset(); pdfContext->fGraphicsState.fPathClosed = false; } pdfContext->fGraphicsState.fCurPosY = pdfContext->fObjectStack.top()->asNumber()->value(); pdfContext->fObjectStack.pop(); pdfContext->fGraphicsState.fCurPosX = pdfContext->fObjectStack.top()->asNumber()->value(); pdfContext->fObjectStack.pop(); pdfContext->fGraphicsState.fPath.moveTo(SkDoubleToScalar(pdfContext->fGraphicsState.fCurPosX), SkDoubleToScalar(pdfContext->fGraphicsState.fCurPosY)); return kOK_PdfResult; } PdfResult PdfOp_l(PdfContext* pdfContext, SkCanvas* canvas, PdfTokenLooper** looper) { if (pdfContext->fGraphicsState.fPathClosed) { pdfContext->fGraphicsState.fPath.reset(); pdfContext->fGraphicsState.fPathClosed = false; } pdfContext->fGraphicsState.fCurPosY = pdfContext->fObjectStack.top()->asNumber()->value(); pdfContext->fObjectStack.pop(); pdfContext->fGraphicsState.fCurPosX = pdfContext->fObjectStack.top()->asNumber()->value(); pdfContext->fObjectStack.pop(); pdfContext->fGraphicsState.fPath.lineTo(SkDoubleToScalar(pdfContext->fGraphicsState.fCurPosX), SkDoubleToScalar(pdfContext->fGraphicsState.fCurPosY)); return kOK_PdfResult; } PdfResult PdfOp_c(PdfContext* pdfContext, SkCanvas* canvas, PdfTokenLooper** looper) { if (pdfContext->fGraphicsState.fPathClosed) { pdfContext->fGraphicsState.fPath.reset(); pdfContext->fGraphicsState.fPathClosed = false; } double y3 = pdfContext->fObjectStack.top()->asNumber()->value(); pdfContext->fObjectStack.pop(); double x3 = pdfContext->fObjectStack.top()->asNumber()->value(); pdfContext->fObjectStack.pop(); double y2 = pdfContext->fObjectStack.top()->asNumber()->value(); pdfContext->fObjectStack.pop(); double x2 = pdfContext->fObjectStack.top()->asNumber()->value(); pdfContext->fObjectStack.pop(); double y1 = pdfContext->fObjectStack.top()->asNumber()->value(); pdfContext->fObjectStack.pop(); double x1 = pdfContext->fObjectStack.top()->asNumber()->value(); pdfContext->fObjectStack.pop(); pdfContext->fGraphicsState.fPath.cubicTo(SkDoubleToScalar(x1), SkDoubleToScalar(y1), SkDoubleToScalar(x2), SkDoubleToScalar(y2), SkDoubleToScalar(x3), SkDoubleToScalar(y3)); pdfContext->fGraphicsState.fCurPosX = x3; pdfContext->fGraphicsState.fCurPosY = y3; return kOK_PdfResult; } PdfResult PdfOp_v(PdfContext* pdfContext, SkCanvas* canvas, PdfTokenLooper** looper) { if (pdfContext->fGraphicsState.fPathClosed) { pdfContext->fGraphicsState.fPath.reset(); pdfContext->fGraphicsState.fPathClosed = false; } double y3 = pdfContext->fObjectStack.top()->asNumber()->value(); pdfContext->fObjectStack.pop(); double x3 = pdfContext->fObjectStack.top()->asNumber()->value(); pdfContext->fObjectStack.pop(); double y2 = pdfContext->fObjectStack.top()->asNumber()->value(); pdfContext->fObjectStack.pop(); double x2 = pdfContext->fObjectStack.top()->asNumber()->value(); pdfContext->fObjectStack.pop(); double y1 = pdfContext->fGraphicsState.fCurPosY; double x1 = pdfContext->fGraphicsState.fCurPosX; pdfContext->fGraphicsState.fPath.cubicTo(SkDoubleToScalar(x1), SkDoubleToScalar(y1), SkDoubleToScalar(x2), SkDoubleToScalar(y2), SkDoubleToScalar(x3), SkDoubleToScalar(y3)); pdfContext->fGraphicsState.fCurPosX = x3; pdfContext->fGraphicsState.fCurPosY = y3; return kOK_PdfResult; } PdfResult PdfOp_y(PdfContext* pdfContext, SkCanvas* canvas, PdfTokenLooper** looper) { if (pdfContext->fGraphicsState.fPathClosed) { pdfContext->fGraphicsState.fPath.reset(); pdfContext->fGraphicsState.fPathClosed = false; } double y3 = pdfContext->fObjectStack.top()->asNumber()->value(); pdfContext->fObjectStack.pop(); double x3 = pdfContext->fObjectStack.top()->asNumber()->value(); pdfContext->fObjectStack.pop(); double y2 = pdfContext->fGraphicsState.fCurPosY; double x2 = pdfContext->fGraphicsState.fCurPosX; double y1 = pdfContext->fObjectStack.top()->asNumber()->value(); pdfContext->fObjectStack.pop(); double x1 = pdfContext->fObjectStack.top()->asNumber()->value(); pdfContext->fObjectStack.pop(); pdfContext->fGraphicsState.fPath.cubicTo(SkDoubleToScalar(x1), SkDoubleToScalar(y1), SkDoubleToScalar(x2), SkDoubleToScalar(y2), SkDoubleToScalar(x3), SkDoubleToScalar(y3)); pdfContext->fGraphicsState.fCurPosX = x3; pdfContext->fGraphicsState.fCurPosY = y3; return kOK_PdfResult; } PdfResult PdfOp_re(PdfContext* pdfContext, SkCanvas* canvas, PdfTokenLooper** looper) { if (pdfContext->fGraphicsState.fPathClosed) { pdfContext->fGraphicsState.fPath.reset(); pdfContext->fGraphicsState.fPathClosed = false; } double height = pdfContext->fObjectStack.top()->asNumber()->value(); pdfContext->fObjectStack.pop(); double width = pdfContext->fObjectStack.top()->asNumber()->value(); pdfContext->fObjectStack.pop(); double y = pdfContext->fObjectStack.top()->asNumber()->value(); pdfContext->fObjectStack.pop(); double x = pdfContext->fObjectStack.top()->asNumber()->value(); pdfContext->fObjectStack.pop(); pdfContext->fGraphicsState.fPath.addRect(SkDoubleToScalar(x), SkDoubleToScalar(y), SkDoubleToScalar(x + width), SkDoubleToScalar(y + height)); pdfContext->fGraphicsState.fCurPosX = x; pdfContext->fGraphicsState.fCurPosY = y + height; return kOK_PdfResult; } PdfResult PdfOp_h(PdfContext* pdfContext, SkCanvas* canvas, PdfTokenLooper** looper) { pdfContext->fGraphicsState.fPath.close(); return kOK_PdfResult; } PdfResult PdfOp_fillAndStroke(PdfContext* pdfContext, SkCanvas* canvas, bool fill, bool stroke, bool close, bool evenOdd) { SkPath path = pdfContext->fGraphicsState.fPath; if (close) { path.close(); } canvas->setMatrix(pdfContext->fGraphicsState.fMatrix); SkPaint paint; SkPoint line[2]; if (fill && !stroke && path.isLine(line)) { paint.setStyle(SkPaint::kStroke_Style); pdfContext->fGraphicsState.applyGraphicsState(&paint, false); paint.setStrokeWidth(SkDoubleToScalar(0)); canvas->drawPath(path, paint); } else { if (fill) { paint.setStyle(SkPaint::kFill_Style); if (evenOdd) { path.setFillType(SkPath::kEvenOdd_FillType); } pdfContext->fGraphicsState.applyGraphicsState(&paint, false); canvas->drawPath(path, paint); } if (stroke) { paint.setStyle(SkPaint::kStroke_Style); pdfContext->fGraphicsState.applyGraphicsState(&paint, true); path.setFillType(SkPath::kWinding_FillType); // reset it, just in case it messes up the stroke canvas->drawPath(path, paint); } } pdfContext->fGraphicsState.fPath.reset(); // todo zoom ... other stuff ? if (pdfContext->fGraphicsState.fHasClipPathToApply) { #ifndef PDF_DEBUG_NO_CLIPING canvas->clipPath(pdfContext->fGraphicsState.fClipPath, SkRegion::kIntersect_Op, true); #endif } //pdfContext->fGraphicsState.fClipPath.reset(); pdfContext->fGraphicsState.fHasClipPathToApply = false; return kPartial_PdfResult; } PdfResult PdfOp_S(PdfContext* pdfContext, SkCanvas* canvas, PdfTokenLooper** looper) { return PdfOp_fillAndStroke(pdfContext, canvas, false, true, false, false); } PdfResult PdfOp_s(PdfContext* pdfContext, SkCanvas* canvas, PdfTokenLooper** looper) { return PdfOp_fillAndStroke(pdfContext, canvas, false, true, true, false); } PdfResult PdfOp_F(PdfContext* pdfContext, SkCanvas* canvas, PdfTokenLooper** looper) { return PdfOp_fillAndStroke(pdfContext, canvas, true, false, false, false); } PdfResult PdfOp_f(PdfContext* pdfContext, SkCanvas* canvas, PdfTokenLooper** looper) { return PdfOp_fillAndStroke(pdfContext, canvas, true, false, false, false); } PdfResult PdfOp_f_star(PdfContext* pdfContext, SkCanvas* canvas, PdfTokenLooper** looper) { return PdfOp_fillAndStroke(pdfContext, canvas, true, false, false, true); } PdfResult PdfOp_B(PdfContext* pdfContext, SkCanvas* canvas, PdfTokenLooper** looper) { return PdfOp_fillAndStroke(pdfContext, canvas, true, true, false, false); } PdfResult PdfOp_B_star(PdfContext* pdfContext, SkCanvas* canvas, PdfTokenLooper** looper) { return PdfOp_fillAndStroke(pdfContext, canvas, true, true, false, true); } PdfResult PdfOp_b(PdfContext* pdfContext, SkCanvas* canvas, PdfTokenLooper** looper) { return PdfOp_fillAndStroke(pdfContext, canvas, true, true, true, false); } PdfResult PdfOp_b_star(PdfContext* pdfContext, SkCanvas* canvas, PdfTokenLooper** looper) { return PdfOp_fillAndStroke(pdfContext, canvas, true, true, true, true); } PdfResult PdfOp_n(PdfContext* pdfContext, SkCanvas* canvas, PdfTokenLooper** looper) { canvas->setMatrix(pdfContext->fGraphicsState.fMatrix); if (pdfContext->fGraphicsState.fHasClipPathToApply) { #ifndef PDF_DEBUG_NO_CLIPING canvas->clipPath(pdfContext->fGraphicsState.fClipPath, SkRegion::kIntersect_Op, true); #endif } //pdfContext->fGraphicsState.fClipPath.reset(); pdfContext->fGraphicsState.fHasClipPathToApply = false; pdfContext->fGraphicsState.fPathClosed = true; return kOK_PdfResult; } PdfResult PdfOp_BT(PdfContext* pdfContext, SkCanvas* canvas, PdfTokenLooper** looper) { pdfContext->fGraphicsState.fTextBlock = true; pdfContext->fGraphicsState.fMatrixTm = pdfContext->fGraphicsState.fMatrix; pdfContext->fGraphicsState.fMatrixTlm = pdfContext->fGraphicsState.fMatrix; return kPartial_PdfResult; } PdfResult PdfOp_ET(PdfContext* pdfContext, SkCanvas* canvas, PdfTokenLooper** looper) { if (!pdfContext->fGraphicsState.fTextBlock) { return kIgnoreError_PdfResult; } // TODO(edisonn): anything else to be done once we are done with draw text? Like restore stack? return kPartial_PdfResult; } //font size Tf Set the text font, Tf //, to font and the text font size, Tfs, to size. font is the name of a //font resource in the Fontsubdictionary of the current resource dictionary; size is //a number representing a scale factor. There is no initial value for either font or //size; they must be specified explicitly using Tf before any text is shown. PdfResult PdfOp_Tf(PdfContext* pdfContext, SkCanvas* canvas, PdfTokenLooper** looper) { pdfContext->fGraphicsState.fCurFontSize = pdfContext->fObjectStack.top()->asNumber()->value(); pdfContext->fObjectStack.pop(); std::string fontName = pdfContext->fObjectStack.top()->asName()->value(); pdfContext->fObjectStack.pop(); #ifdef PDF_TRACE printf("font name: %s\n", fontName.c_str()); #endif SkPdfFontDictionary* fd = NULL; if (pdfContext->fGraphicsState.fResources->Font()) { SkPdfObject* objFont = pdfContext->fGraphicsState.fResources->Font()->get(fontName.c_str()); objFont->doc()->mapper()->mapFontDictionary(objFont, &fd); } SkPdfFont* skfont = SkPdfFont::fontFromPdfDictionary(fd); if (skfont) { pdfContext->fGraphicsState.fSkFont = skfont; } return kPartial_PdfResult; } PdfResult PdfOp_Tj(PdfContext* pdfContext, SkCanvas* canvas, PdfTokenLooper** looper) { if (!pdfContext->fGraphicsState.fTextBlock) { // TODO(edisonn): try to recover and draw it any way? return kIgnoreError_PdfResult; } PdfResult ret = DrawText(pdfContext, pdfContext->fObjectStack.top(), canvas); pdfContext->fObjectStack.pop(); return ret; } PdfResult PdfOp_quote(PdfContext* pdfContext, SkCanvas* canvas, PdfTokenLooper** looper) { if (!pdfContext->fGraphicsState.fTextBlock) { // TODO(edisonn): try to recover and draw it any way? return kIgnoreError_PdfResult; } PdfOp_T_star(pdfContext, canvas, looper); // Do not pop, and push, just transfer the param to Tj return PdfOp_Tj(pdfContext, canvas, looper); } PdfResult PdfOp_doublequote(PdfContext* pdfContext, SkCanvas* canvas, PdfTokenLooper** looper) { if (!pdfContext->fGraphicsState.fTextBlock) { // TODO(edisonn): try to recover and draw it any way? return kIgnoreError_PdfResult; } SkPdfObject* str = pdfContext->fObjectStack.top(); pdfContext->fObjectStack.pop(); SkPdfObject* ac = pdfContext->fObjectStack.top(); pdfContext->fObjectStack.pop(); SkPdfObject* aw = pdfContext->fObjectStack.top(); pdfContext->fObjectStack.pop(); pdfContext->fObjectStack.push(aw); PdfOp_Tw(pdfContext, canvas, looper); pdfContext->fObjectStack.push(ac); PdfOp_Tc(pdfContext, canvas, looper); pdfContext->fObjectStack.push(str); PdfOp_quote(pdfContext, canvas, looper); return kPartial_PdfResult; } PdfResult PdfOp_TJ(PdfContext* pdfContext, SkCanvas* canvas, PdfTokenLooper** looper) { if (!pdfContext->fGraphicsState.fTextBlock) { // TODO(edisonn): try to recover and draw it any way? return kIgnoreError_PdfResult; } SkPdfArray* array = pdfContext->fObjectStack.top()->asArray(); pdfContext->fObjectStack.pop(); for( int i=0; i(array->size()); i++ ) { if( (*array)[i]->asString()) { SkPdfObject* obj = (*array)[i]; DrawText(pdfContext, obj, canvas); } else if ((*array)[i]->asInteger() || (*array)[i]->asNumber()) { double dx = (*array)[i]->asNumber()->value(); SkMatrix matrix; matrix.setAll(SkDoubleToScalar(1), SkDoubleToScalar(0), // TODO(edisonn): use writing mode, vertical/horizontal. SkDoubleToScalar(-dx), // amount is substracted!!! SkDoubleToScalar(0), SkDoubleToScalar(1), SkDoubleToScalar(0), SkDoubleToScalar(0), SkDoubleToScalar(0), SkDoubleToScalar(1)); pdfContext->fGraphicsState.fMatrixTm.preConcat(matrix); } } return kPartial_PdfResult; // TODO(edisonn): Implement fully DrawText before returing OK. } PdfResult PdfOp_CS_cs(PdfContext* pdfContext, SkCanvas* canvas, SkPdfColorOperator* colorOperator) { colorOperator->fColorSpace = pdfContext->fObjectStack.top()->asName()->value(); pdfContext->fObjectStack.pop(); return kOK_PdfResult; } PdfResult PdfOp_CS(PdfContext* pdfContext, SkCanvas* canvas, PdfTokenLooper** looper) { return PdfOp_CS_cs(pdfContext, canvas, &pdfContext->fGraphicsState.fStroking); } PdfResult PdfOp_cs(PdfContext* pdfContext, SkCanvas* canvas, PdfTokenLooper** looper) { return PdfOp_CS_cs(pdfContext, canvas, &pdfContext->fGraphicsState.fNonStroking); } PdfResult PdfOp_SC_sc(PdfContext* pdfContext, SkCanvas* canvas, SkPdfColorOperator* colorOperator) { double c[4]; pdf_int64 v[4]; int n = GetColorSpaceComponents(colorOperator->fColorSpace); bool doubles = true; if (colorOperator->fColorSpace == "Indexed") { doubles = false; } #ifdef PDF_TRACE printf("color space = %s, N = %i\n", colorOperator->fColorSpace.c_str(), n); #endif for (int i = n - 1; i >= 0 ; i--) { if (doubles) { c[i] = pdfContext->fObjectStack.top()->asNumber()->value(); pdfContext->fObjectStack.pop(); } else { v[i] = pdfContext->fObjectStack.top()->asInteger()->value(); pdfContext->fObjectStack.pop(); } } // TODO(edisonn): Now, set that color. Only DeviceRGB supported. if (colorOperator->fColorSpace == "DeviceRGB") { colorOperator->setRGBColor(SkColorSetRGB(255*c[0], 255*c[1], 255*c[2])); } return kPartial_PdfResult; } PdfResult PdfOp_SC(PdfContext* pdfContext, SkCanvas* canvas, PdfTokenLooper** looper) { return PdfOp_SC_sc(pdfContext, canvas, &pdfContext->fGraphicsState.fStroking); } PdfResult PdfOp_sc(PdfContext* pdfContext, SkCanvas* canvas, PdfTokenLooper** looper) { return PdfOp_SC_sc(pdfContext, canvas, &pdfContext->fGraphicsState.fNonStroking); } PdfResult PdfOp_SCN_scn(PdfContext* pdfContext, SkCanvas* canvas, SkPdfColorOperator* colorOperator) { PdfString name; if (pdfContext->fObjectStack.top()->asName()) { pdfContext->fObjectStack.pop(); } // TODO(edisonn): SCN supports more color spaces than SCN. Read and implement spec. PdfOp_SC_sc(pdfContext, canvas, colorOperator); return kPartial_PdfResult; } PdfResult PdfOp_SCN(PdfContext* pdfContext, SkCanvas* canvas, PdfTokenLooper** looper) { return PdfOp_SCN_scn(pdfContext, canvas, &pdfContext->fGraphicsState.fStroking); } PdfResult PdfOp_scn(PdfContext* pdfContext, SkCanvas* canvas, PdfTokenLooper** looper) { return PdfOp_SCN_scn(pdfContext, canvas, &pdfContext->fGraphicsState.fNonStroking); } PdfResult PdfOp_G_g(PdfContext* pdfContext, SkCanvas* canvas, SkPdfColorOperator* colorOperator) { double gray = pdfContext->fObjectStack.top()->asNumber()->value(); pdfContext->fObjectStack.pop(); return kNYI_PdfResult; } PdfResult PdfOp_G(PdfContext* pdfContext, SkCanvas* canvas, PdfTokenLooper** looper) { return PdfOp_G_g(pdfContext, canvas, &pdfContext->fGraphicsState.fStroking); } PdfResult PdfOp_g(PdfContext* pdfContext, SkCanvas* canvas, PdfTokenLooper** looper) { return PdfOp_G_g(pdfContext, canvas, &pdfContext->fGraphicsState.fNonStroking); } PdfResult PdfOp_RG_rg(PdfContext* pdfContext, SkCanvas* canvas, SkPdfColorOperator* colorOperator) { double b = pdfContext->fObjectStack.top()->asNumber()->value(); pdfContext->fObjectStack.pop(); double g = pdfContext->fObjectStack.top()->asNumber()->value(); pdfContext->fObjectStack.pop(); double r = pdfContext->fObjectStack.top()->asNumber()->value(); pdfContext->fObjectStack.pop(); colorOperator->fColorSpace = "DeviceRGB"; colorOperator->setRGBColor(SkColorSetRGB(255*r, 255*g, 255*b)); return kOK_PdfResult; } PdfResult PdfOp_RG(PdfContext* pdfContext, SkCanvas* canvas, PdfTokenLooper** looper) { return PdfOp_RG_rg(pdfContext, canvas, &pdfContext->fGraphicsState.fStroking); } PdfResult PdfOp_rg(PdfContext* pdfContext, SkCanvas* canvas, PdfTokenLooper** looper) { return PdfOp_RG_rg(pdfContext, canvas, &pdfContext->fGraphicsState.fNonStroking); } PdfResult PdfOp_K_k(PdfContext* pdfContext, SkCanvas* canvas, SkPdfColorOperator* colorOperator) { // TODO(edisonn): spec has some rules about overprint, implement them. double k = pdfContext->fObjectStack.top()->asNumber()->value(); pdfContext->fObjectStack.pop(); double y = pdfContext->fObjectStack.top()->asNumber()->value(); pdfContext->fObjectStack.pop(); double m = pdfContext->fObjectStack.top()->asNumber()->value(); pdfContext->fObjectStack.pop(); double c = pdfContext->fObjectStack.top()->asNumber()->value(); pdfContext->fObjectStack.pop(); colorOperator->fColorSpace = "DeviceCMYK"; // TODO(edisonn): Set color. return kNYI_PdfResult; } PdfResult PdfOp_K(PdfContext* pdfContext, SkCanvas* canvas, PdfTokenLooper** looper) { return PdfOp_K_k(pdfContext, canvas, &pdfContext->fGraphicsState.fStroking); } PdfResult PdfOp_k(PdfContext* pdfContext, SkCanvas* canvas, PdfTokenLooper** looper) { return PdfOp_K_k(pdfContext, canvas, &pdfContext->fGraphicsState.fNonStroking); } PdfResult PdfOp_W(PdfContext* pdfContext, SkCanvas* canvas, PdfTokenLooper** looper) { pdfContext->fGraphicsState.fClipPath = pdfContext->fGraphicsState.fPath; pdfContext->fGraphicsState.fHasClipPathToApply = true; return kOK_PdfResult; } PdfResult PdfOp_W_star(PdfContext* pdfContext, SkCanvas* canvas, PdfTokenLooper** looper) { pdfContext->fGraphicsState.fClipPath = pdfContext->fGraphicsState.fPath; #ifdef PDF_TRACE if (pdfContext->fGraphicsState.fClipPath.isRect(NULL)) { printf("CLIP IS RECT\n"); } #endif // TODO(edisonn): there seem to be a bug with clipPath of a rect with even odd. pdfContext->fGraphicsState.fClipPath.setFillType(SkPath::kEvenOdd_FillType); pdfContext->fGraphicsState.fHasClipPathToApply = true; return kPartial_PdfResult; } PdfResult PdfOp_BX(PdfContext* pdfContext, SkCanvas* canvas, PdfTokenLooper** looper) { *looper = new PdfCompatibilitySectionLooper(); return kOK_PdfResult; } PdfResult PdfOp_EX(PdfContext* pdfContext, SkCanvas* canvas, PdfTokenLooper** looper) { #ifdef ASSERT_BAD_PDF_OPS SkASSERT(false); // EX must be consumed by PdfCompatibilitySectionLooper, but let's // have the assert when testing good pdfs. #endif return kIgnoreError_PdfResult; } PdfResult PdfOp_BI(PdfContext* pdfContext, SkCanvas* canvas, PdfTokenLooper** looper) { *looper = new PdfInlineImageLooper(); return kOK_PdfResult; } PdfResult PdfOp_ID(PdfContext* pdfContext, SkCanvas* canvas, PdfTokenLooper** looper) { #ifdef ASSERT_BAD_PDF_OPS SkASSERT(false); // must be processed in inline image looper, but let's // have the assert when testing good pdfs. #endif return kIgnoreError_PdfResult; } PdfResult PdfOp_EI(PdfContext* pdfContext, SkCanvas* canvas, PdfTokenLooper** looper) { #ifdef ASSERT_BAD_PDF_OPS SkASSERT(false); // must be processed in inline image looper, but let's // have the assert when testing good pdfs. #endif return kIgnoreError_PdfResult; } //lineWidth w Set the line width in the graphics state (see “Line Width” on page 152). PdfResult PdfOp_w(PdfContext* pdfContext, SkCanvas* canvas, PdfTokenLooper** looper) { double lineWidth = pdfContext->fObjectStack.top()->asNumber()->value(); pdfContext->fObjectStack.pop(); pdfContext->fGraphicsState.fLineWidth = lineWidth; return kOK_PdfResult; } //lineCap J Set the line cap style in the graphics state (see “Line Cap Style” on page 153). PdfResult PdfOp_J(PdfContext* pdfContext, SkCanvas* canvas, PdfTokenLooper** looper) { pdfContext->fObjectStack.pop(); //double lineCap = pdfContext->fObjectStack.top()->asNumber()->value(); pdfContext->fObjectStack.pop(); return kNYI_PdfResult; } //lineJoin j Set the line join style in the graphics state (see “Line Join Style” on page 153). PdfResult PdfOp_j(PdfContext* pdfContext, SkCanvas* canvas, PdfTokenLooper** looper) { pdfContext->fObjectStack.pop(); //double lineJoin = pdfContext->fObjectStack.top()->asNumber()->value(); pdfContext->fObjectStack.pop(); return kNYI_PdfResult; } //miterLimit M Set the miter limit in the graphics state (see “Miter Limit” on page 153). PdfResult PdfOp_M(PdfContext* pdfContext, SkCanvas* canvas, PdfTokenLooper** looper) { pdfContext->fObjectStack.pop(); //double miterLimit = pdfContext->fObjectStack.top()->asNumber()->value(); pdfContext->fObjectStack.pop(); return kNYI_PdfResult; } //dashArray dashPhase d Set the line dash pattern in the graphics state (see “Line Dash Pattern” on //page 155). PdfResult PdfOp_d(PdfContext* pdfContext, SkCanvas* canvas, PdfTokenLooper** looper) { pdfContext->fObjectStack.pop(); pdfContext->fObjectStack.pop(); return kNYI_PdfResult; } //intent ri (PDF 1.1) Set the color rendering intent in the graphics state (see “Rendering Intents” on page 197). PdfResult PdfOp_ri(PdfContext* pdfContext, SkCanvas* canvas, PdfTokenLooper** looper) { pdfContext->fObjectStack.pop(); return kNYI_PdfResult; } //flatness i Set the flatness tolerance in the graphics state (see Section 6.5.1, “Flatness //Tolerance”). flatness is a number in the range 0 to 100; a value of 0 speci- //fies the output device’s default flatness tolerance. PdfResult PdfOp_i(PdfContext* pdfContext, SkCanvas* canvas, PdfTokenLooper** looper) { pdfContext->fObjectStack.pop(); return kNYI_PdfResult; } //dictName gs (PDF 1.2) Set the specified parameters in the graphics state. dictName is //the name of a graphics state parameter dictionary in the ExtGState subdictionary of the current resource dictionary (see the next section). PdfResult PdfOp_gs(PdfContext* pdfContext, SkCanvas* canvas, PdfTokenLooper** looper) { std::string name = pdfContext->fObjectStack.top()->asName()->value(); pdfContext->fObjectStack.pop(); #ifdef PDF_TRACE std::string str; #endif //Next, get the ExtGState Dictionary from the Resource Dictionary: const SkPdfDictionary* extGStateDictionary = pdfContext->fGraphicsState.fResources->ExtGState(); if (extGStateDictionary == NULL) { #ifdef PDF_TRACE printf("ExtGState is NULL!\n"); #endif return kIgnoreError_PdfResult; } SkPdfObject* value = extGStateDictionary->get(name.c_str()); SkPdfGraphicsStateDictionary* gs = NULL; value->doc()->mapper()->mapGraphicsStateDictionary(value, &gs); // TODO(edisonn): now load all those properties in graphic state. if (gs == NULL) { return kIgnoreError_PdfResult; } if (gs->has_CA()) { pdfContext->fGraphicsState.fStroking.fOpacity = gs->CA(); } if (gs->has_ca()) { pdfContext->fGraphicsState.fNonStroking.fOpacity = gs->ca(); } if (gs->has_LW()) { pdfContext->fGraphicsState.fLineWidth = gs->LW(); } return kNYI_PdfResult; } //charSpace Tc Set the character spacing, Tc //, to charSpace, which is a number expressed in unscaled text space units. Character spacing is used by the Tj, TJ, and ' operators. //Initial value: 0. PdfResult PdfOp_Tc(PdfContext* pdfContext, SkCanvas* canvas, PdfTokenLooper** looper) { double charSpace = pdfContext->fObjectStack.top()->asNumber()->value(); pdfContext->fObjectStack.pop(); pdfContext->fGraphicsState.fCharSpace = charSpace; return kOK_PdfResult; } //wordSpace Tw Set the word spacing, T //w //, to wordSpace, which is a number expressed in unscaled //text space units. Word spacing is used by the Tj, TJ, and ' operators. Initial //value: 0. PdfResult PdfOp_Tw(PdfContext* pdfContext, SkCanvas* canvas, PdfTokenLooper** looper) { double wordSpace = pdfContext->fObjectStack.top()->asNumber()->value(); pdfContext->fObjectStack.pop(); pdfContext->fGraphicsState.fWordSpace = wordSpace; return kOK_PdfResult; } //scale Tz Set the horizontal scaling, Th //, to (scale ˜ 100). scale is a number specifying the //percentage of the normal width. Initial value: 100 (normal width). PdfResult PdfOp_Tz(PdfContext* pdfContext, SkCanvas* canvas, PdfTokenLooper** looper) { double scale = pdfContext->fObjectStack.top()->asNumber()->value(); pdfContext->fObjectStack.pop(); return kNYI_PdfResult; } //render Tr Set the text rendering mode, T //mode, to render, which is an integer. Initial value: 0. PdfResult PdfOp_Tr(PdfContext* pdfContext, SkCanvas* canvas, PdfTokenLooper** looper) { double render = pdfContext->fObjectStack.top()->asNumber()->value(); pdfContext->fObjectStack.pop(); return kNYI_PdfResult; } //rise Ts Set the text rise, Trise, to rise, which is a number expressed in unscaled text space //units. Initial value: 0. PdfResult PdfOp_Ts(PdfContext* pdfContext, SkCanvas* canvas, PdfTokenLooper** looper) { double rise = pdfContext->fObjectStack.top()->asNumber()->value(); pdfContext->fObjectStack.pop(); return kNYI_PdfResult; } //wx wy d0 PdfResult PdfOp_d0(PdfContext* pdfContext, SkCanvas* canvas, PdfTokenLooper** looper) { pdfContext->fObjectStack.pop(); pdfContext->fObjectStack.pop(); return kNYI_PdfResult; } //wx wy llx lly urx ury d1 PdfResult PdfOp_d1(PdfContext* pdfContext, SkCanvas* canvas, PdfTokenLooper** looper) { pdfContext->fObjectStack.pop(); pdfContext->fObjectStack.pop(); pdfContext->fObjectStack.pop(); pdfContext->fObjectStack.pop(); pdfContext->fObjectStack.pop(); pdfContext->fObjectStack.pop(); return kNYI_PdfResult; } //name sh PdfResult PdfOp_sh(PdfContext* pdfContext, SkCanvas* canvas, PdfTokenLooper** looper) { pdfContext->fObjectStack.pop(); return kNYI_PdfResult; } //name Do PdfResult PdfOp_Do(PdfContext* pdfContext, SkCanvas* canvas, PdfTokenLooper** looper) { std::string name = pdfContext->fObjectStack.top()->asName()->value(); pdfContext->fObjectStack.pop(); SkPdfDictionary* xObject = pdfContext->fGraphicsState.fResources->XObject(); if (xObject == NULL) { #ifdef PDF_TRACE printf("XObject is NULL!\n"); #endif return kIgnoreError_PdfResult; } SkPdfObject* value = xObject->get(name.c_str()); #ifdef PDF_TRACE // value->ToString(str); // printf("Do object value: %s\n", str.c_str()); #endif return doXObject(pdfContext, canvas, *value); } //tag MP Designate a marked-content point. tag is a name object indicating the role or //significance of the point. PdfResult PdfOp_MP(PdfContext* pdfContext, SkCanvas* canvas, PdfTokenLooper** looper) { pdfContext->fObjectStack.pop(); return kNYI_PdfResult; } //tag properties DP Designate a marked-content point with an associated property list. tag is a //name object indicating the role or significance of the point; properties is //either an inline dictionary containing the property list or a name object //associated with it in the Properties subdictionary of the current resource //dictionary (see Section 9.5.1, “Property Lists”). PdfResult PdfOp_DP(PdfContext* pdfContext, SkCanvas* canvas, PdfTokenLooper** looper) { pdfContext->fObjectStack.pop(); pdfContext->fObjectStack.pop(); return kNYI_PdfResult; } //tag BMC Begin a marked-content sequence terminated by a balancing EMC operator. //tag is a name object indicating the role or significance of the sequence. PdfResult PdfOp_BMC(PdfContext* pdfContext, SkCanvas* canvas, PdfTokenLooper** looper) { pdfContext->fObjectStack.pop(); return kNYI_PdfResult; } //tag properties BDC Begin a marked-content sequence with an associated property list, terminated //by a balancing EMCoperator. tag is a name object indicating the role or significance of the sequence; propertiesis either an inline dictionary containing the //property list or a name object associated with it in the Properties subdictionary of the current resource dictionary (see Section 9.5.1, “Property Lists”). PdfResult PdfOp_BDC(PdfContext* pdfContext, SkCanvas* canvas, PdfTokenLooper** looper) { pdfContext->fObjectStack.pop(); pdfContext->fObjectStack.pop(); return kNYI_PdfResult; } //— EMC End a marked-content sequence begun by a BMC or BDC operator. PdfResult PdfOp_EMC(PdfContext* pdfContext, SkCanvas* canvas, PdfTokenLooper** looper) { return kNYI_PdfResult; } void initPdfOperatorRenderes() { static bool gInitialized = false; if (gInitialized) { return; } gPdfOps["q"] = PdfOp_q; gPdfOps["Q"] = PdfOp_Q; gPdfOps["cm"] = PdfOp_cm; gPdfOps["TD"] = PdfOp_TD; gPdfOps["Td"] = PdfOp_Td; gPdfOps["Tm"] = PdfOp_Tm; gPdfOps["T*"] = PdfOp_T_star; gPdfOps["m"] = PdfOp_m; gPdfOps["l"] = PdfOp_l; gPdfOps["c"] = PdfOp_c; gPdfOps["v"] = PdfOp_v; gPdfOps["y"] = PdfOp_y; gPdfOps["h"] = PdfOp_h; gPdfOps["re"] = PdfOp_re; gPdfOps["S"] = PdfOp_S; gPdfOps["s"] = PdfOp_s; gPdfOps["f"] = PdfOp_f; gPdfOps["F"] = PdfOp_F; gPdfOps["f*"] = PdfOp_f_star; gPdfOps["B"] = PdfOp_B; gPdfOps["B*"] = PdfOp_B_star; gPdfOps["b"] = PdfOp_b; gPdfOps["b*"] = PdfOp_b_star; gPdfOps["n"] = PdfOp_n; gPdfOps["BT"] = PdfOp_BT; gPdfOps["ET"] = PdfOp_ET; gPdfOps["Tj"] = PdfOp_Tj; gPdfOps["'"] = PdfOp_quote; gPdfOps["\""] = PdfOp_doublequote; gPdfOps["TJ"] = PdfOp_TJ; gPdfOps["CS"] = PdfOp_CS; gPdfOps["cs"] = PdfOp_cs; gPdfOps["SC"] = PdfOp_SC; gPdfOps["SCN"] = PdfOp_SCN; gPdfOps["sc"] = PdfOp_sc; gPdfOps["scn"] = PdfOp_scn; gPdfOps["G"] = PdfOp_G; gPdfOps["g"] = PdfOp_g; gPdfOps["RG"] = PdfOp_RG; gPdfOps["rg"] = PdfOp_rg; gPdfOps["K"] = PdfOp_K; gPdfOps["k"] = PdfOp_k; gPdfOps["W"] = PdfOp_W; gPdfOps["W*"] = PdfOp_W_star; gPdfOps["BX"] = PdfOp_BX; gPdfOps["EX"] = PdfOp_EX; gPdfOps["BI"] = PdfOp_BI; gPdfOps["ID"] = PdfOp_ID; gPdfOps["EI"] = PdfOp_EI; gPdfOps["w"] = PdfOp_w; gPdfOps["J"] = PdfOp_J; gPdfOps["j"] = PdfOp_j; gPdfOps["M"] = PdfOp_M; gPdfOps["d"] = PdfOp_d; gPdfOps["ri"] = PdfOp_ri; gPdfOps["i"] = PdfOp_i; gPdfOps["gs"] = PdfOp_gs; gPdfOps["Tc"] = PdfOp_Tc; gPdfOps["Tw"] = PdfOp_Tw; gPdfOps["Tz"] = PdfOp_Tz; gPdfOps["TL"] = PdfOp_TL; gPdfOps["Tf"] = PdfOp_Tf; gPdfOps["Tr"] = PdfOp_Tr; gPdfOps["Ts"] = PdfOp_Ts; gPdfOps["d0"] = PdfOp_d0; gPdfOps["d1"] = PdfOp_d1; gPdfOps["sh"] = PdfOp_sh; gPdfOps["Do"] = PdfOp_Do; gPdfOps["MP"] = PdfOp_MP; gPdfOps["DP"] = PdfOp_DP; gPdfOps["BMC"] = PdfOp_BMC; gPdfOps["BDC"] = PdfOp_BDC; gPdfOps["EMC"] = PdfOp_EMC; gInitialized = true; } class InitPdfOps { public: InitPdfOps() { initPdfOperatorRenderes(); } }; InitPdfOps gInitPdfOps; void reportPdfRenderStats() { std::map::iterator iter; for (int i = 0 ; i < kCount_PdfResult; i++) { for (iter = gRenderStats[i].begin(); iter != gRenderStats[i].end(); ++iter) { printf("%s: %s -> count %i\n", gRenderStatsNames[i], iter->first.c_str(), iter->second); } } } PdfResult PdfMainLooper::consumeToken(PdfToken& token) { if (token.fType == kKeyword_TokenType) { // TODO(edisonn): log trace flag (verbose, error, info, warning, ...) PdfOperatorRenderer pdfOperatorRenderer = gPdfOps[token.fKeyword]; if (pdfOperatorRenderer) { // caller, main work is done by pdfOperatorRenderer(...) PdfTokenLooper* childLooper = NULL; gRenderStats[pdfOperatorRenderer(fPdfContext, fCanvas, &childLooper)][token.fKeyword]++; if (childLooper) { childLooper->setUp(this); childLooper->loop(); delete childLooper; } } else { gRenderStats[kUnsupported_PdfResult][token.fKeyword]++; } } else if (token.fType == kObject_TokenType) { fPdfContext->fObjectStack.push( token.fObject ); } else if ( token.fType == kImageData_TokenType) { // TODO(edisonn): implement inline image. } else { return kIgnoreError_PdfResult; } return kOK_PdfResult; } void PdfMainLooper::loop() { PdfToken token; while (readToken(fTokenizer, &token)) { consumeToken(token); } } PdfResult PdfInlineImageLooper::consumeToken(PdfToken& token) { //pdfContext.fInlineImage.fKeyValuePairs[key] = value; return kNYI_PdfResult; } void PdfInlineImageLooper::loop() { PdfToken token; while (readToken(fTokenizer, &token)) { if (token.fType == kKeyword_TokenType && strcmp(token.fKeyword, "BX") == 0) { PdfTokenLooper* looper = new PdfCompatibilitySectionLooper(); looper->setUp(this); looper->loop(); } else { if (token.fType == kKeyword_TokenType && strcmp(token.fKeyword, "EI") == 0) { done(); return; } consumeToken(token); } } // TODO(edisonn): report error/warning, EOF without EI. } PdfResult PdfInlineImageLooper::done() { // TODO(edisonn): long to short names // TODO(edisonn): set properties in a map // TODO(edisonn): extract bitmap stream, check if PoDoFo has public utilities to uncompress // the stream. SkBitmap bitmap; setup_bitmap(&bitmap, 50, 50, SK_ColorRED); // TODO(edisonn): matrix use. // Draw dummy red square, to show the prezence of the inline image. fCanvas->drawBitmap(bitmap, SkDoubleToScalar(0), SkDoubleToScalar(0), NULL); return kNYI_PdfResult; } PdfResult PdfCompatibilitySectionLooper::consumeToken(PdfToken& token) { return fParent->consumeToken(token); } void PdfCompatibilitySectionLooper::loop() { // TODO(edisonn): save stacks position, or create a new stack? // TODO(edisonn): what happens if we pop out more variables then when we started? // restore them? fail? We could create a new operands stack for every new BX/EX section, // pop-ing too much will not affect outside the section. PdfToken token; while (readToken(fTokenizer, &token)) { if (token.fType == kKeyword_TokenType && strcmp(token.fKeyword, "BX") == 0) { PdfTokenLooper* looper = new PdfCompatibilitySectionLooper(); looper->setUp(this); looper->loop(); delete looper; } else { if (token.fType == kKeyword_TokenType && strcmp(token.fKeyword, "EX") == 0) break; fParent->consumeToken(token); } } // TODO(edisonn): restore stack. } // TODO(edisonn): fix PoDoFo load ~/crashing/Shading.pdf // TODO(edisonn): Add API for Forms viewing and editing // e.g. SkBitmap getPage(int page); // int formsCount(); // SkForm getForm(int formID); // SkForm(SkRect, .. other data) // TODO (edisonn): Add intend when loading pdf, for example: for viewing, parsing all content, ... // if we load the first page, and we zoom to fit to screen horizontally, then load only those // resources needed, so the preview is fast. // TODO (edisonn): hide parser/tokenizer behind and interface and a query language, and resolve // references automatically. bool SkPdfViewer::load(const SkString inputFileName, SkPicture* out) { std::cout << "Init: " << inputFileName.c_str() << std::endl; SkPodofoParsedPDF* doc = new SkPodofoParsedPDF(inputFileName.c_str()); if (!doc->pages()) { std::cout << "ERROR: Empty Document" << inputFileName.c_str() << std::endl; return false; } else { for (int pn = 0; pn < doc->pages(); ++pn) { // TODO(edisonn): implement inheritance properties as per PDF spec //SkRect rect = page->MediaBox(); SkRect rect = doc->MediaBox(pn); #ifdef PDF_TRACE printf("Page Width: %f, Page Height: %f\n", SkScalarToDouble(rect.width()), SkScalarToDouble(rect.height())); #endif // TODO(edisonn): page->GetCropBox(), page->GetTrimBox() ... how to use? SkBitmap bitmap; #ifdef PDF_DEBUG_3X setup_bitmap(&bitmap, 3 * (int)SkScalarToDouble(rect.width()), 3 * (int)SkScalarToDouble(rect.height())); #else setup_bitmap(&bitmap, (int)SkScalarToDouble(rect.width()), (int)SkScalarToDouble(rect.height())); #endif SkAutoTUnref device(SkNEW_ARGS(SkDevice, (bitmap))); SkCanvas canvas(device); gDumpBitmap = &bitmap; gDumpCanvas = &canvas; doc->drawPage(pn, &canvas); SkString out; if (doc->pages() > 1) { out.appendf("%s-%i.png", inputFileName.c_str(), pn); } else { out = inputFileName; // .pdf -> .png out[out.size() - 2] = 'n'; out[out.size() - 1] = 'g'; } SkImageEncoder::EncodeFile(out.c_str(), bitmap, SkImageEncoder::kPNG_Type, 100); } return true; } return true; }