6a9d436260
Review URL: https://codereview.chromium.org/18093008 git-svn-id: http://skia.googlecode.com/svn/trunk@10013 2bbb7eff-a529-9590-31e7-b0007b416f81
2031 lines
72 KiB
C++
2031 lines
72 KiB
C++
/*
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* Copyright 2013 Google Inc.
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*
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*/
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#include "SkCanvas.h"
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#include "SkDevice.h"
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#include "SkForceLinking.h"
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#include "SkGraphics.h"
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#include "SkImageDecoder.h"
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#include "SkImageEncoder.h"
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#include "SkOSFile.h"
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#include "SkPicture.h"
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#include "SkStream.h"
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#include "SkTypeface.h"
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#include "SkTArray.h"
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#include "SkPdfBasics.h"
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#include "SkPdfNativeTokenizer.h"
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#include <iostream>
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#include <cstdio>
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#include <stack>
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#include <set>
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extern "C" PdfContext* gPdfContext;
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extern "C" SkBitmap* gDumpBitmap;
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extern "C" SkCanvas* gDumpCanvas;
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__SK_FORCE_IMAGE_DECODER_LINKING;
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// TODO(edisonn): tool, show what objects were read at least, show the ones not even read
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// keep for each object pos in file
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// plug in for VS? syntax coloring, show selected object ... from the text, or from rendered x,y
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// TODO(edisonn): security - validate all the user input, all pdf!
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// TODO(edisonn): put drawtext in #ifdefs, so comparations will ignore minor changes in text positioning and font
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// this way, we look more at other features and layout in diffs
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// TODO(edisonn): move trace dump in the get functions, and mapper ones too so it ghappens automatically
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/*
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#ifdef PDF_TRACE
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std::string str;
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pdfContext->fGraphicsState.fResources->native()->ToString(str);
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printf("Print Tf Resources: %s\n", str.c_str());
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#endif
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*/
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#include "SkPdfHeaders_autogen.h"
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#include "SkPdfMapper_autogen.h"
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#include "SkPdfRenderer.h"
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#include "SkPdfBasics.h"
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#include "SkPdfUtils.h"
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#include "SkPdfFont.h"
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/*
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* TODO(edisonn):
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* - all font types and all ppdf font features
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* - word spacing
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* - load font for baidu.pdf
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* - load font for youtube.pdf
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* - parser for pdf from the definition already available in pdfspec_autogen.py
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* - all docs from ~/work
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* - encapsulate native in the pdf api so the skpdf does not know anything about native ... in progress
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* - load gs/ especially smask and already known prop (skp) ... in progress
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* - wrapper on classes for customizations? e.g.
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* SkPdfPageObjectVanila - has only the basic loaders/getters
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* SkPdfPageObject : public SkPdfPageObjectVanila, extends, and I can add customizations here
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* need to find a nice object model for all this with constructors and factories
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* - deal with inheritable automatically ?
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* - deal with specific type in spec directly, add all dictionary types to known types
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*/
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using namespace std;
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// TODO(edisonn): Document PdfTokenLooper and subclasses.
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class PdfTokenLooper {
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protected:
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PdfTokenLooper* fParent;
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SkPdfNativeTokenizer* fTokenizer;
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PdfContext* fPdfContext;
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SkCanvas* fCanvas;
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public:
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PdfTokenLooper(PdfTokenLooper* parent,
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SkPdfNativeTokenizer* tokenizer,
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PdfContext* pdfContext,
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SkCanvas* canvas)
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: fParent(parent), fTokenizer(tokenizer), fPdfContext(pdfContext), fCanvas(canvas) {}
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virtual ~PdfTokenLooper() {}
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virtual PdfResult consumeToken(PdfToken& token) = 0;
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virtual void loop() = 0;
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void setUp(PdfTokenLooper* parent) {
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fParent = parent;
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fTokenizer = parent->fTokenizer;
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fPdfContext = parent->fPdfContext;
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fCanvas = parent->fCanvas;
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}
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};
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class PdfMainLooper : public PdfTokenLooper {
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public:
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PdfMainLooper(PdfTokenLooper* parent,
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SkPdfNativeTokenizer* tokenizer,
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PdfContext* pdfContext,
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SkCanvas* canvas)
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: PdfTokenLooper(parent, tokenizer, pdfContext, canvas) {}
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virtual PdfResult consumeToken(PdfToken& token);
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virtual void loop();
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};
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class PdfInlineImageLooper : public PdfTokenLooper {
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public:
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PdfInlineImageLooper()
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: PdfTokenLooper(NULL, NULL, NULL, NULL) {}
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virtual PdfResult consumeToken(PdfToken& token);
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virtual void loop();
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PdfResult done();
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};
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class PdfCompatibilitySectionLooper : public PdfTokenLooper {
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public:
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PdfCompatibilitySectionLooper()
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: PdfTokenLooper(NULL, NULL, NULL, NULL) {}
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virtual PdfResult consumeToken(PdfToken& token);
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virtual void loop();
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};
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// Utilities
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static void setup_bitmap(SkBitmap* bitmap, int width, int height, SkColor color = SK_ColorWHITE) {
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bitmap->setConfig(SkBitmap::kARGB_8888_Config, width, height);
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bitmap->allocPixels();
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bitmap->eraseColor(color);
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}
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// TODO(edisonn): synonyms? DeviceRGB and RGB ...
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static int GetColorSpaceComponents(const std::string& colorSpace) {
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if (colorSpace == "DeviceCMYK") {
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return 4;
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} else if (colorSpace == "DeviceGray" ||
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colorSpace == "CalGray" ||
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colorSpace == "Indexed") {
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return 1;
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} else if (colorSpace == "DeviceRGB" ||
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colorSpace == "CalRGB" ||
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colorSpace == "Lab") {
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return 3;
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} else {
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return 0;
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}
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}
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SkMatrix SkMatrixFromPdfMatrix(double array[6]) {
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SkMatrix matrix;
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matrix.setAll(SkDoubleToScalar(array[0]),
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SkDoubleToScalar(array[2]),
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SkDoubleToScalar(array[4]),
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SkDoubleToScalar(array[1]),
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SkDoubleToScalar(array[3]),
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SkDoubleToScalar(array[5]),
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SkDoubleToScalar(0),
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SkDoubleToScalar(0),
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SkDoubleToScalar(1));
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return matrix;
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}
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SkMatrix SkMatrixFromPdfArray(SkPdfArray* pdfArray) {
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double array[6];
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// TODO(edisonn): security issue, ret if size() != 6
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for (int i = 0; i < 6; i++) {
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const SkPdfObject* elem = pdfArray->operator [](i);
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if (elem == NULL || !elem->isNumber()) {
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return SkMatrix::I(); // TODO(edisonn): report issue
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}
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array[i] = elem->numberValue();
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}
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return SkMatrixFromPdfMatrix(array);
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}
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extern "C" SkNativeParsedPDF* gDoc;
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SkBitmap* gDumpBitmap = NULL;
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SkCanvas* gDumpCanvas = NULL;
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char gLastKeyword[100] = "";
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int gLastOpKeyword = -1;
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char allOpWithVisualEffects[100] = ",S,s,f,F,f*,B,B*,b,b*,n,Tj,TJ,\',\",d0,d1,sh,EI,Do,EX,";
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int gReadOp = 0;
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#ifdef PDF_TRACE_DIFF_IN_PNG
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static bool hasVisualEffect(const char* pdfOp) {
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return true;
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if (*pdfOp == '\0') return false;
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char markedPdfOp[100] = ",";
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strcat(markedPdfOp, pdfOp);
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strcat(markedPdfOp, ",");
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return (strstr(allOpWithVisualEffects, markedPdfOp) != NULL);
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}
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#endif // PDF_TRACE_DIFF_IN_PNG
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// TODO(edisonn): Pass PdfContext and SkCanvasd only with the define for instrumentation.
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static bool readToken(SkPdfNativeTokenizer* fTokenizer, PdfToken* token) {
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bool ret = fTokenizer->readToken(token);
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gReadOp++;
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#ifdef PDF_TRACE_DIFF_IN_PNG
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// TODO(edisonn): compare with old bitmap, and save only new bits are available, and save
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// the numbar and name of last operation, so the file name will reflect op that changed.
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if (hasVisualEffect(gLastKeyword)) { // TODO(edisonn): and has dirty bits.
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gDumpCanvas->flush();
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SkBitmap bitmap;
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setup_bitmap(&bitmap, gDumpBitmap->width(), gDumpBitmap->height());
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memcpy(bitmap.getPixels(), gDumpBitmap->getPixels(), gDumpBitmap->getSize());
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SkAutoTUnref<SkDevice> device(SkNEW_ARGS(SkDevice, (bitmap)));
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SkCanvas canvas(device);
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// draw context stuff here
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SkPaint blueBorder;
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blueBorder.setColor(SK_ColorBLUE);
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blueBorder.setStyle(SkPaint::kStroke_Style);
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blueBorder.setTextSize(SkDoubleToScalar(20));
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SkString str;
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const SkClipStack* clipStack = gDumpCanvas->getClipStack();
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if (clipStack) {
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SkClipStack::Iter iter(*clipStack, SkClipStack::Iter::kBottom_IterStart);
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const SkClipStack::Element* elem;
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double y = 0;
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int total = 0;
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while (elem = iter.next()) {
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total++;
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y += 30;
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switch (elem->getType()) {
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case SkClipStack::Element::kRect_Type:
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canvas.drawRect(elem->getRect(), blueBorder);
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canvas.drawText("Rect Clip", strlen("Rect Clip"), SkDoubleToScalar(10), SkDoubleToScalar(y), blueBorder);
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break;
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case SkClipStack::Element::kPath_Type:
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canvas.drawPath(elem->getPath(), blueBorder);
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canvas.drawText("Path Clip", strlen("Path Clip"), SkDoubleToScalar(10), SkDoubleToScalar(y), blueBorder);
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break;
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case SkClipStack::Element::kEmpty_Type:
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canvas.drawText("Empty Clip!!!", strlen("Empty Clip!!!"), SkDoubleToScalar(10), SkDoubleToScalar(y), blueBorder);
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break;
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default:
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canvas.drawText("Unkown Clip!!!", strlen("Unkown Clip!!!"), SkDoubleToScalar(10), SkDoubleToScalar(y), blueBorder);
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break;
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}
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}
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y += 30;
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str.printf("Number of clips in stack: %i", total);
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canvas.drawText(str.c_str(), str.size(), SkDoubleToScalar(10), SkDoubleToScalar(y), blueBorder);
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}
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const SkRegion& clipRegion = gDumpCanvas->getTotalClip();
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SkPath clipPath;
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if (clipRegion.getBoundaryPath(&clipPath)) {
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SkPaint redBorder;
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redBorder.setColor(SK_ColorRED);
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redBorder.setStyle(SkPaint::kStroke_Style);
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canvas.drawPath(clipPath, redBorder);
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}
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canvas.flush();
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SkString out;
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// TODO(edisonn): get the image, and overlay on top of it, the clip , grafic state, teh stack,
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// ... and other properties, to be able to debug th code easily
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out.appendf("/usr/local/google/home/edisonn/log_view2/step-%i-%s.png", gLastOpKeyword, gLastKeyword);
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SkImageEncoder::EncodeFile(out.c_str(), bitmap, SkImageEncoder::kPNG_Type, 100);
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}
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if (token->fType == kKeyword_TokenType) {
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strcpy(gLastKeyword, token->fKeyword);
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gLastOpKeyword = gReadOp;
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} else {
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strcpy(gLastKeyword, "");
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}
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#endif
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return ret;
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}
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typedef PdfResult (*PdfOperatorRenderer)(PdfContext*, SkCanvas*, PdfTokenLooper**);
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map<std::string, PdfOperatorRenderer> gPdfOps;
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map<std::string, int> gRenderStats[kCount_PdfResult];
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const char* gRenderStatsNames[kCount_PdfResult] = {
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"Success",
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"Partially implemented",
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"Not yet implemented",
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"Ignore Error",
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"Error",
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"Unsupported/Unknown"
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};
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static PdfResult DrawText(PdfContext* pdfContext,
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const SkPdfObject* _str,
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SkCanvas* canvas)
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{
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SkPdfFont* skfont = pdfContext->fGraphicsState.fSkFont;
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if (skfont == NULL) {
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skfont = SkPdfFont::Default();
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}
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if (_str == NULL || !_str->isAnyString()) {
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// TODO(edisonn): report warning
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return kIgnoreError_PdfResult;
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}
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const SkPdfString* str = (const SkPdfString*)_str;
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SkUnencodedText binary(str);
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SkDecodedText decoded;
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if (skfont->encoding() == NULL) {
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// TODO(edisonn): report warning
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return kNYI_PdfResult;
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}
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skfont->encoding()->decodeText(binary, &decoded);
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SkPaint paint;
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// TODO(edisonn): when should fCurFont->GetFontSize() used? When cur is fCurFontSize == 0?
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// Or maybe just not call setTextSize at all?
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if (pdfContext->fGraphicsState.fCurFontSize != 0) {
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paint.setTextSize(SkDoubleToScalar(pdfContext->fGraphicsState.fCurFontSize));
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}
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// if (fCurFont && fCurFont->GetFontScale() != 0) {
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// paint.setTextScaleX(SkFloatToScalar(fCurFont->GetFontScale() / 100.0));
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// }
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pdfContext->fGraphicsState.applyGraphicsState(&paint, false);
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canvas->save();
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#if 1
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SkMatrix matrix = pdfContext->fGraphicsState.fMatrixTm;
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SkPoint point1;
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pdfContext->fGraphicsState.fMatrixTm.mapXY(SkIntToScalar(0), SkIntToScalar(0), &point1);
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SkMatrix mirror;
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mirror.setTranslate(0, -point1.y());
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// TODO(edisonn): fix rotated text, and skewed too
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mirror.postScale(SK_Scalar1, -SK_Scalar1);
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// TODO(edisonn): post rotate, skew
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mirror.postTranslate(0, point1.y());
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matrix.postConcat(mirror);
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canvas->setMatrix(matrix);
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SkTraceMatrix(matrix, "mirrored");
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#endif
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skfont->drawText(decoded, &paint, pdfContext, canvas);
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canvas->restore();
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return kPartial_PdfResult;
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}
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// TODO(edisonn): create header files with declarations!
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PdfResult PdfOp_q(PdfContext* pdfContext, SkCanvas* canvas, PdfTokenLooper** looper);
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PdfResult PdfOp_Q(PdfContext* pdfContext, SkCanvas* canvas, PdfTokenLooper** looper);
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PdfResult PdfOp_Tw(PdfContext* pdfContext, SkCanvas* canvas, PdfTokenLooper** looper);
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PdfResult PdfOp_Tc(PdfContext* pdfContext, SkCanvas* canvas, PdfTokenLooper** looper);
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// TODO(edisonn): perf!!!
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static SkColorTable* getGrayColortable() {
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static SkColorTable* grayColortable = NULL;
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if (grayColortable == NULL) {
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SkPMColor* colors = new SkPMColor[256];
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for (int i = 0 ; i < 256; i++) {
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colors[i] = SkPreMultiplyARGB(255, i, i, i);
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}
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grayColortable = new SkColorTable(colors, 256);
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}
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return grayColortable;
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}
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static SkBitmap transferImageStreamToBitmap(unsigned char* uncompressedStream, size_t uncompressedStreamLength,
|
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int width, int height, int bytesPerLine,
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int bpc, const std::string& colorSpace,
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bool transparencyMask) {
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SkBitmap bitmap;
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//int components = GetColorSpaceComponents(colorSpace);
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//#define MAX_COMPONENTS 10
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// TODO(edisonn): assume start of lines are aligned at 32 bits?
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// Is there a faster way to load the uncompressed stream into a bitmap?
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// minimal support for now
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if ((colorSpace == "DeviceRGB" || colorSpace == "RGB") && bpc == 8) {
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SkColor* uncompressedStreamArgb = (SkColor*)malloc(width * height * sizeof(SkColor));
|
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for (int h = 0 ; h < height; h++) {
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long i = width * (h);
|
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for (int w = 0 ; w < width; w++) {
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uncompressedStreamArgb[i] = SkColorSetRGB(uncompressedStream[3 * w],
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uncompressedStream[3 * w + 1],
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uncompressedStream[3 * w + 2]);
|
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i++;
|
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}
|
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uncompressedStream += bytesPerLine;
|
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}
|
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|
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bitmap.setConfig(SkBitmap::kARGB_8888_Config, width, height);
|
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bitmap.setPixels(uncompressedStreamArgb);
|
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}
|
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else if ((colorSpace == "DeviceGray" || colorSpace == "Gray") && bpc == 8) {
|
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unsigned char* uncompressedStreamA8 = (unsigned char*)malloc(width * height);
|
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|
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for (int h = 0 ; h < height; h++) {
|
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long i = width * (h);
|
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for (int w = 0 ; w < width; w++) {
|
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uncompressedStreamA8[i] = transparencyMask ? 255 - uncompressedStream[w] :
|
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uncompressedStream[w];
|
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i++;
|
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}
|
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uncompressedStream += bytesPerLine;
|
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}
|
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|
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bitmap.setConfig(transparencyMask ? SkBitmap::kA8_Config : SkBitmap::kIndex8_Config,
|
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width, height);
|
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bitmap.setPixels(uncompressedStreamA8, transparencyMask ? NULL : getGrayColortable());
|
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}
|
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// TODO(edisonn): Report Warning, NYI, or error
|
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return bitmap;
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}
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// utils
|
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// TODO(edisonn): add cache, or put the bitmap property directly on the PdfObject
|
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// TODO(edisonn): deal with colorSpaces, we could add them to SkBitmap::Config
|
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// TODO(edisonn): preserve A1 format that skia knows, + fast convert from 111, 222, 444 to closest
|
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// skia format, through a table
|
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|
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// this functions returns the image, it does not look at the smask.
|
||
|
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static SkBitmap getImageFromObject(PdfContext* pdfContext, SkPdfImageDictionary* image, bool transparencyMask) {
|
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if (image == NULL || !image->hasStream()) {
|
||
// TODO(edisonn): report warning to be used in testing.
|
||
return SkBitmap();
|
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}
|
||
|
||
int64_t bpc = image->BitsPerComponent(pdfContext->fPdfDoc);
|
||
int64_t width = image->Width(pdfContext->fPdfDoc);
|
||
int64_t height = image->Height(pdfContext->fPdfDoc);
|
||
std::string colorSpace = "DeviceRGB";
|
||
|
||
// TODO(edisonn): color space can be an array too!
|
||
if (image->isColorSpaceAName(pdfContext->fPdfDoc)) {
|
||
colorSpace = image->getColorSpaceAsName(pdfContext->fPdfDoc);
|
||
}
|
||
|
||
/*
|
||
bool imageMask = image->imageMask();
|
||
|
||
if (imageMask) {
|
||
if (bpc != 0 && bpc != 1) {
|
||
// TODO(edisonn): report warning to be used in testing.
|
||
return SkBitmap();
|
||
}
|
||
bpc = 1;
|
||
}
|
||
*/
|
||
|
||
unsigned char* uncompressedStream = NULL;
|
||
size_t uncompressedStreamLength = 0;
|
||
|
||
SkPdfStream* stream = (SkPdfStream*)image;
|
||
|
||
if (!stream || !stream->GetFilteredStreamRef(&uncompressedStream, &uncompressedStreamLength, pdfContext->fPdfDoc->allocator()) ||
|
||
uncompressedStream == NULL || uncompressedStreamLength == 0) {
|
||
// TODO(edisonn): report warning to be used in testing.
|
||
return SkBitmap();
|
||
}
|
||
|
||
SkPdfStreamCommonDictionary* streamDict = (SkPdfStreamCommonDictionary*)stream;
|
||
|
||
if (streamDict->has_Filter() && ((streamDict->isFilterAName(NULL) &&
|
||
streamDict->getFilterAsName(NULL) == "DCTDecode") ||
|
||
(streamDict->isFilterAArray(NULL) &&
|
||
streamDict->getFilterAsArray(NULL)->size() > 0 &&
|
||
streamDict->getFilterAsArray(NULL)->objAtAIndex(0)->isName() &&
|
||
streamDict->getFilterAsArray(NULL)->objAtAIndex(0)->nameValue2() == "DCTDecode"))) {
|
||
SkBitmap bitmap;
|
||
SkImageDecoder::DecodeMemory(uncompressedStream, uncompressedStreamLength, &bitmap);
|
||
return bitmap;
|
||
}
|
||
|
||
|
||
|
||
// 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()
|
||
// }
|
||
|
||
int bytesPerLine = uncompressedStreamLength / height;
|
||
#ifdef PDF_TRACE
|
||
if (uncompressedStreamLength % height != 0) {
|
||
printf("Warning uncompressedStreamLength modulo height != 0 !!!\n");
|
||
}
|
||
#endif
|
||
|
||
SkBitmap bitmap = transferImageStreamToBitmap(
|
||
(unsigned char*)uncompressedStream, uncompressedStreamLength,
|
||
(int)width, (int)height, bytesPerLine,
|
||
(int)bpc, colorSpace,
|
||
transparencyMask);
|
||
|
||
return bitmap;
|
||
}
|
||
|
||
static SkBitmap getSmaskFromObject(PdfContext* pdfContext, SkPdfImageDictionary* obj) {
|
||
SkPdfImageDictionary* sMask = obj->SMask(pdfContext->fPdfDoc);
|
||
|
||
if (sMask) {
|
||
return getImageFromObject(pdfContext, sMask, true);
|
||
}
|
||
|
||
// TODO(edisonn): implement GS SMask. Default to empty right now.
|
||
return pdfContext->fGraphicsState.fSMask;
|
||
}
|
||
|
||
static PdfResult doXObject_Image(PdfContext* pdfContext, SkCanvas* canvas, 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);
|
||
|
||
#if 1
|
||
SkScalar z = SkIntToScalar(0);
|
||
SkScalar one = SkIntToScalar(1);
|
||
|
||
SkPoint from[4] = {SkPoint::Make(z, z), SkPoint::Make(one, z), SkPoint::Make(one, one), SkPoint::Make(z, one)};
|
||
SkPoint to[4] = {SkPoint::Make(z, one), SkPoint::Make(one, one), SkPoint::Make(one, z), SkPoint::Make(z, z)};
|
||
SkMatrix flip;
|
||
SkAssertResult(flip.setPolyToPoly(from, to, 4));
|
||
SkMatrix solveImageFlip = pdfContext->fGraphicsState.fMatrix;
|
||
solveImageFlip.preConcat(flip);
|
||
canvas->setMatrix(solveImageFlip);
|
||
#endif
|
||
|
||
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;
|
||
}
|
||
|
||
|
||
|
||
|
||
static PdfResult doXObject_Form(PdfContext* pdfContext, SkCanvas* canvas, SkPdfType1FormDictionary* skobj) {
|
||
if (!skobj || !skobj->hasStream()) {
|
||
return kIgnoreError_PdfResult;
|
||
}
|
||
|
||
PdfOp_q(pdfContext, canvas, NULL);
|
||
canvas->save();
|
||
|
||
|
||
if (skobj->Resources(pdfContext->fPdfDoc)) {
|
||
pdfContext->fGraphicsState.fResources = skobj->Resources(pdfContext->fPdfDoc);
|
||
}
|
||
|
||
SkTraceMatrix(pdfContext->fGraphicsState.fMatrix, "Current matrix");
|
||
|
||
if (skobj->has_Matrix()) {
|
||
pdfContext->fGraphicsState.fMatrix.preConcat(skobj->Matrix(pdfContext->fPdfDoc));
|
||
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->has_BBox()) {
|
||
canvas->clipRect(skobj->BBox(pdfContext->fPdfDoc), 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 = (SkPdfStream*)skobj;
|
||
|
||
SkPdfNativeTokenizer* tokenizer = pdfContext->fPdfDoc->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;
|
||
}
|
||
|
||
//static PdfResult doXObject_PS(PdfContext* pdfContext, SkCanvas* canvas, const SkPdfObject* obj) {
|
||
// return kNYI_PdfResult;
|
||
//}
|
||
|
||
PdfResult doType3Char(PdfContext* pdfContext, SkCanvas* canvas, const SkPdfObject* skobj, SkRect bBox, SkMatrix matrix, double textSize) {
|
||
if (!skobj || !skobj->hasStream()) {
|
||
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 = (SkPdfStream*)skobj;
|
||
|
||
SkPdfNativeTokenizer* tokenizer = pdfContext->fPdfDoc->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): make sure the pointer is unique
|
||
std::set<const SkPdfObject*> gInRendering;
|
||
|
||
class CheckRecursiveRendering {
|
||
const SkPdfObject* fUniqueData;
|
||
public:
|
||
CheckRecursiveRendering(const SkPdfObject* obj) : fUniqueData(obj) {
|
||
gInRendering.insert(obj);
|
||
}
|
||
|
||
~CheckRecursiveRendering() {
|
||
//SkASSERT(fObj.fInRendering);
|
||
gInRendering.erase(fUniqueData);
|
||
}
|
||
|
||
static bool IsInRendering(const SkPdfObject* obj) {
|
||
return gInRendering.find(obj) != gInRendering.end();
|
||
}
|
||
};
|
||
|
||
static PdfResult doXObject(PdfContext* pdfContext, SkCanvas* canvas, const SkPdfObject* obj) {
|
||
if (CheckRecursiveRendering::IsInRendering(obj)) {
|
||
// Oops, corrupt PDF!
|
||
return kIgnoreError_PdfResult;
|
||
}
|
||
|
||
CheckRecursiveRendering checkRecursion(obj);
|
||
|
||
switch (pdfContext->fPdfDoc->mapper()->mapXObjectDictionary(obj))
|
||
{
|
||
case kImageDictionary_SkPdfObjectType:
|
||
return doXObject_Image(pdfContext, canvas, (SkPdfImageDictionary*)obj);
|
||
case kType1FormDictionary_SkPdfObjectType:
|
||
return doXObject_Form(pdfContext, canvas, (SkPdfType1FormDictionary*)obj);
|
||
//case kObjectDictionaryXObjectPS_SkPdfObjectType:
|
||
//return doXObject_PS(skxobj.asPS());
|
||
default:
|
||
return kIgnoreError_PdfResult;
|
||
}
|
||
}
|
||
|
||
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;
|
||
}
|
||
|
||
static 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()->numberValue();
|
||
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.
|
||
static PdfResult PdfOp_TL(PdfContext* pdfContext, SkCanvas* canvas, PdfTokenLooper** looper) {
|
||
double ty = pdfContext->fObjectStack.top()->numberValue(); pdfContext->fObjectStack.pop();
|
||
|
||
pdfContext->fGraphicsState.fTextLeading = ty;
|
||
|
||
return kOK_PdfResult;
|
||
}
|
||
|
||
static PdfResult PdfOp_Td(PdfContext* pdfContext, SkCanvas* canvas, PdfTokenLooper** looper) {
|
||
double ty = pdfContext->fObjectStack.top()->numberValue(); pdfContext->fObjectStack.pop();
|
||
double tx = pdfContext->fObjectStack.top()->numberValue(); 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;
|
||
}
|
||
|
||
static PdfResult PdfOp_TD(PdfContext* pdfContext, SkCanvas* canvas, PdfTokenLooper** looper) {
|
||
double ty = pdfContext->fObjectStack.top()->numberValue(); pdfContext->fObjectStack.pop();
|
||
double tx = pdfContext->fObjectStack.top()->numberValue(); pdfContext->fObjectStack.pop();
|
||
|
||
// TODO(edisonn): Create factory methods or constructors so native is hidden
|
||
SkPdfReal* _ty = pdfContext->fPdfDoc->createReal(-ty);
|
||
pdfContext->fObjectStack.push(_ty);
|
||
|
||
PdfOp_TL(pdfContext, canvas, looper);
|
||
|
||
SkPdfReal* vtx = pdfContext->fPdfDoc->createReal(tx);
|
||
pdfContext->fObjectStack.push(vtx);
|
||
|
||
SkPdfReal* vty = pdfContext->fPdfDoc->createReal(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
|
||
|
||
return ret;
|
||
}
|
||
|
||
static PdfResult PdfOp_Tm(PdfContext* pdfContext, SkCanvas* canvas, PdfTokenLooper** looper) {
|
||
double f = pdfContext->fObjectStack.top()->numberValue(); pdfContext->fObjectStack.pop();
|
||
double e = pdfContext->fObjectStack.top()->numberValue(); pdfContext->fObjectStack.pop();
|
||
double d = pdfContext->fObjectStack.top()->numberValue(); pdfContext->fObjectStack.pop();
|
||
double c = pdfContext->fObjectStack.top()->numberValue(); pdfContext->fObjectStack.pop();
|
||
double b = pdfContext->fObjectStack.top()->numberValue(); pdfContext->fObjectStack.pop();
|
||
double a = pdfContext->fObjectStack.top()->numberValue(); 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
|
||
static PdfResult PdfOp_T_star(PdfContext* pdfContext, SkCanvas* canvas, PdfTokenLooper** looper) {
|
||
SkPdfReal* zero = pdfContext->fPdfDoc->createReal(0.0);
|
||
SkPdfReal* tl = pdfContext->fPdfDoc->createReal(pdfContext->fGraphicsState.fTextLeading);
|
||
|
||
pdfContext->fObjectStack.push(zero);
|
||
pdfContext->fObjectStack.push(tl);
|
||
|
||
PdfResult ret = PdfOp_Td(pdfContext, canvas, looper);
|
||
|
||
return ret;
|
||
}
|
||
|
||
static 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()->numberValue(); pdfContext->fObjectStack.pop();
|
||
pdfContext->fGraphicsState.fCurPosX = pdfContext->fObjectStack.top()->numberValue(); pdfContext->fObjectStack.pop();
|
||
|
||
pdfContext->fGraphicsState.fPath.moveTo(SkDoubleToScalar(pdfContext->fGraphicsState.fCurPosX),
|
||
SkDoubleToScalar(pdfContext->fGraphicsState.fCurPosY));
|
||
|
||
return kOK_PdfResult;
|
||
}
|
||
|
||
static 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()->numberValue(); pdfContext->fObjectStack.pop();
|
||
pdfContext->fGraphicsState.fCurPosX = pdfContext->fObjectStack.top()->numberValue(); pdfContext->fObjectStack.pop();
|
||
|
||
pdfContext->fGraphicsState.fPath.lineTo(SkDoubleToScalar(pdfContext->fGraphicsState.fCurPosX),
|
||
SkDoubleToScalar(pdfContext->fGraphicsState.fCurPosY));
|
||
|
||
return kOK_PdfResult;
|
||
}
|
||
|
||
static 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()->numberValue(); pdfContext->fObjectStack.pop();
|
||
double x3 = pdfContext->fObjectStack.top()->numberValue(); pdfContext->fObjectStack.pop();
|
||
double y2 = pdfContext->fObjectStack.top()->numberValue(); pdfContext->fObjectStack.pop();
|
||
double x2 = pdfContext->fObjectStack.top()->numberValue(); pdfContext->fObjectStack.pop();
|
||
double y1 = pdfContext->fObjectStack.top()->numberValue(); pdfContext->fObjectStack.pop();
|
||
double x1 = pdfContext->fObjectStack.top()->numberValue(); 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;
|
||
}
|
||
|
||
static 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()->numberValue(); pdfContext->fObjectStack.pop();
|
||
double x3 = pdfContext->fObjectStack.top()->numberValue(); pdfContext->fObjectStack.pop();
|
||
double y2 = pdfContext->fObjectStack.top()->numberValue(); pdfContext->fObjectStack.pop();
|
||
double x2 = pdfContext->fObjectStack.top()->numberValue(); 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;
|
||
}
|
||
|
||
static 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()->numberValue(); pdfContext->fObjectStack.pop();
|
||
double x3 = pdfContext->fObjectStack.top()->numberValue(); pdfContext->fObjectStack.pop();
|
||
double y2 = pdfContext->fGraphicsState.fCurPosY;
|
||
double x2 = pdfContext->fGraphicsState.fCurPosX;
|
||
double y1 = pdfContext->fObjectStack.top()->numberValue(); pdfContext->fObjectStack.pop();
|
||
double x1 = pdfContext->fObjectStack.top()->numberValue(); 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;
|
||
}
|
||
|
||
static 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()->numberValue(); pdfContext->fObjectStack.pop();
|
||
double width = pdfContext->fObjectStack.top()->numberValue(); pdfContext->fObjectStack.pop();
|
||
double y = pdfContext->fObjectStack.top()->numberValue(); pdfContext->fObjectStack.pop();
|
||
double x = pdfContext->fObjectStack.top()->numberValue(); 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;
|
||
}
|
||
|
||
static PdfResult PdfOp_h(PdfContext* pdfContext, SkCanvas* canvas, PdfTokenLooper** looper) {
|
||
pdfContext->fGraphicsState.fPath.close();
|
||
return kOK_PdfResult;
|
||
}
|
||
|
||
static 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;
|
||
|
||
}
|
||
|
||
static PdfResult PdfOp_S(PdfContext* pdfContext, SkCanvas* canvas, PdfTokenLooper** looper) {
|
||
return PdfOp_fillAndStroke(pdfContext, canvas, false, true, false, false);
|
||
}
|
||
|
||
static PdfResult PdfOp_s(PdfContext* pdfContext, SkCanvas* canvas, PdfTokenLooper** looper) {
|
||
return PdfOp_fillAndStroke(pdfContext, canvas, false, true, true, false);
|
||
}
|
||
|
||
static PdfResult PdfOp_F(PdfContext* pdfContext, SkCanvas* canvas, PdfTokenLooper** looper) {
|
||
return PdfOp_fillAndStroke(pdfContext, canvas, true, false, false, false);
|
||
}
|
||
|
||
static PdfResult PdfOp_f(PdfContext* pdfContext, SkCanvas* canvas, PdfTokenLooper** looper) {
|
||
return PdfOp_fillAndStroke(pdfContext, canvas, true, false, false, false);
|
||
}
|
||
|
||
static PdfResult PdfOp_f_star(PdfContext* pdfContext, SkCanvas* canvas, PdfTokenLooper** looper) {
|
||
return PdfOp_fillAndStroke(pdfContext, canvas, true, false, false, true);
|
||
}
|
||
|
||
static PdfResult PdfOp_B(PdfContext* pdfContext, SkCanvas* canvas, PdfTokenLooper** looper) {
|
||
return PdfOp_fillAndStroke(pdfContext, canvas, true, true, false, false);
|
||
}
|
||
|
||
static PdfResult PdfOp_B_star(PdfContext* pdfContext, SkCanvas* canvas, PdfTokenLooper** looper) {
|
||
return PdfOp_fillAndStroke(pdfContext, canvas, true, true, false, true);
|
||
}
|
||
|
||
static PdfResult PdfOp_b(PdfContext* pdfContext, SkCanvas* canvas, PdfTokenLooper** looper) {
|
||
return PdfOp_fillAndStroke(pdfContext, canvas, true, true, true, false);
|
||
}
|
||
|
||
static PdfResult PdfOp_b_star(PdfContext* pdfContext, SkCanvas* canvas, PdfTokenLooper** looper) {
|
||
return PdfOp_fillAndStroke(pdfContext, canvas, true, true, true, true);
|
||
}
|
||
|
||
static 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;
|
||
}
|
||
|
||
static 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;
|
||
}
|
||
|
||
static 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.
|
||
static PdfResult PdfOp_Tf(PdfContext* pdfContext, SkCanvas* canvas, PdfTokenLooper** looper) {
|
||
pdfContext->fGraphicsState.fCurFontSize = pdfContext->fObjectStack.top()->numberValue(); pdfContext->fObjectStack.pop();
|
||
const char* fontName = pdfContext->fObjectStack.top()->nameValue(); pdfContext->fObjectStack.pop();
|
||
|
||
#ifdef PDF_TRACE
|
||
printf("font name: %s\n", fontName);
|
||
#endif
|
||
|
||
if (pdfContext->fGraphicsState.fResources->Font(pdfContext->fPdfDoc)) {
|
||
SkPdfObject* objFont = pdfContext->fGraphicsState.fResources->Font(pdfContext->fPdfDoc)->get(fontName);
|
||
objFont = pdfContext->fPdfDoc->resolveReference(objFont);
|
||
if (kNone_SkPdfObjectType == pdfContext->fPdfDoc->mapper()->mapFontDictionary(objFont)) {
|
||
// TODO(edisonn): try to recover and draw it any way?
|
||
return kIgnoreError_PdfResult;
|
||
}
|
||
SkPdfFontDictionary* fd = (SkPdfFontDictionary*)objFont;
|
||
|
||
SkPdfFont* skfont = SkPdfFont::fontFromPdfDictionary(pdfContext->fPdfDoc, fd);
|
||
|
||
if (skfont) {
|
||
pdfContext->fGraphicsState.fSkFont = skfont;
|
||
}
|
||
}
|
||
return kIgnoreError_PdfResult;
|
||
}
|
||
|
||
static 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;
|
||
}
|
||
|
||
static 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);
|
||
}
|
||
|
||
static 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;
|
||
}
|
||
|
||
static 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 = (SkPdfArray*)pdfContext->fObjectStack.top();
|
||
pdfContext->fObjectStack.pop();
|
||
|
||
if (!array->isArray()) {
|
||
return kIgnoreError_PdfResult;
|
||
}
|
||
|
||
for( int i=0; i<static_cast<int>(array->size()); i++ )
|
||
{
|
||
if( (*array)[i]->isAnyString()) {
|
||
SkPdfObject* obj = (*array)[i];
|
||
DrawText(pdfContext,
|
||
obj,
|
||
canvas);
|
||
} else if ((*array)[i]->isNumber()) {
|
||
double dx = (*array)[i]->numberValue();
|
||
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.
|
||
}
|
||
|
||
static PdfResult PdfOp_CS_cs(PdfContext* pdfContext, SkCanvas* canvas, SkPdfColorOperator* colorOperator) {
|
||
colorOperator->fColorSpace = pdfContext->fObjectStack.top()->nameValue(); pdfContext->fObjectStack.pop();
|
||
return kOK_PdfResult;
|
||
}
|
||
|
||
static PdfResult PdfOp_CS(PdfContext* pdfContext, SkCanvas* canvas, PdfTokenLooper** looper) {
|
||
return PdfOp_CS_cs(pdfContext, canvas, &pdfContext->fGraphicsState.fStroking);
|
||
}
|
||
|
||
static PdfResult PdfOp_cs(PdfContext* pdfContext, SkCanvas* canvas, PdfTokenLooper** looper) {
|
||
return PdfOp_CS_cs(pdfContext, canvas, &pdfContext->fGraphicsState.fNonStroking);
|
||
}
|
||
|
||
static PdfResult PdfOp_SC_sc(PdfContext* pdfContext, SkCanvas* canvas, SkPdfColorOperator* colorOperator) {
|
||
double c[4];
|
||
// int64_t v[4];
|
||
|
||
int n = GetColorSpaceComponents(colorOperator->fColorSpace);
|
||
|
||
bool doubles = true;
|
||
if (strcmp(colorOperator->fColorSpace, "Indexed") == 0) {
|
||
doubles = false;
|
||
}
|
||
|
||
#ifdef PDF_TRACE
|
||
printf("color space = %s, N = %i\n", colorOperator->fColorSpace, n);
|
||
#endif
|
||
|
||
for (int i = n - 1; i >= 0 ; i--) {
|
||
if (doubles) {
|
||
c[i] = pdfContext->fObjectStack.top()->numberValue(); pdfContext->fObjectStack.pop();
|
||
// } else {
|
||
// v[i] = pdfContext->fObjectStack.top()->intValue(); pdfContext->fObjectStack.pop();
|
||
}
|
||
}
|
||
|
||
// TODO(edisonn): Now, set that color. Only DeviceRGB supported.
|
||
// TODO(edisonn): do possible field values to enum at parsing time!
|
||
// TODO(edisonn): support also abreviations /DeviceRGB == /RGB
|
||
if (strcmp(colorOperator->fColorSpace, "DeviceRGB") == 0 || strcmp(colorOperator->fColorSpace, "RGB") == 0) {
|
||
colorOperator->setRGBColor(SkColorSetRGB(255*c[0], 255*c[1], 255*c[2]));
|
||
}
|
||
return kPartial_PdfResult;
|
||
}
|
||
|
||
static PdfResult PdfOp_SC(PdfContext* pdfContext, SkCanvas* canvas, PdfTokenLooper** looper) {
|
||
return PdfOp_SC_sc(pdfContext, canvas, &pdfContext->fGraphicsState.fStroking);
|
||
}
|
||
|
||
static PdfResult PdfOp_sc(PdfContext* pdfContext, SkCanvas* canvas, PdfTokenLooper** looper) {
|
||
return PdfOp_SC_sc(pdfContext, canvas, &pdfContext->fGraphicsState.fNonStroking);
|
||
}
|
||
|
||
static PdfResult PdfOp_SCN_scn(PdfContext* pdfContext, SkCanvas* canvas, SkPdfColorOperator* colorOperator) {
|
||
//SkPdfString* name;
|
||
if (pdfContext->fObjectStack.top()->isName()) {
|
||
// TODO(edisonn): get name, pass it
|
||
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;
|
||
}
|
||
|
||
static PdfResult PdfOp_SCN(PdfContext* pdfContext, SkCanvas* canvas, PdfTokenLooper** looper) {
|
||
return PdfOp_SCN_scn(pdfContext, canvas, &pdfContext->fGraphicsState.fStroking);
|
||
}
|
||
|
||
static PdfResult PdfOp_scn(PdfContext* pdfContext, SkCanvas* canvas, PdfTokenLooper** looper) {
|
||
return PdfOp_SCN_scn(pdfContext, canvas, &pdfContext->fGraphicsState.fNonStroking);
|
||
}
|
||
|
||
static PdfResult PdfOp_G_g(PdfContext* pdfContext, SkCanvas* canvas, SkPdfColorOperator* colorOperator) {
|
||
/*double gray = */pdfContext->fObjectStack.top()->numberValue(); pdfContext->fObjectStack.pop();
|
||
return kNYI_PdfResult;
|
||
}
|
||
|
||
static PdfResult PdfOp_G(PdfContext* pdfContext, SkCanvas* canvas, PdfTokenLooper** looper) {
|
||
return PdfOp_G_g(pdfContext, canvas, &pdfContext->fGraphicsState.fStroking);
|
||
}
|
||
|
||
static PdfResult PdfOp_g(PdfContext* pdfContext, SkCanvas* canvas, PdfTokenLooper** looper) {
|
||
return PdfOp_G_g(pdfContext, canvas, &pdfContext->fGraphicsState.fNonStroking);
|
||
}
|
||
|
||
static PdfResult PdfOp_RG_rg(PdfContext* pdfContext, SkCanvas* canvas, SkPdfColorOperator* colorOperator) {
|
||
double b = pdfContext->fObjectStack.top()->numberValue(); pdfContext->fObjectStack.pop();
|
||
double g = pdfContext->fObjectStack.top()->numberValue(); pdfContext->fObjectStack.pop();
|
||
double r = pdfContext->fObjectStack.top()->numberValue(); pdfContext->fObjectStack.pop();
|
||
|
||
colorOperator->fColorSpace = "DeviceRGB";
|
||
colorOperator->setRGBColor(SkColorSetRGB(255*r, 255*g, 255*b));
|
||
return kOK_PdfResult;
|
||
}
|
||
|
||
static PdfResult PdfOp_RG(PdfContext* pdfContext, SkCanvas* canvas, PdfTokenLooper** looper) {
|
||
return PdfOp_RG_rg(pdfContext, canvas, &pdfContext->fGraphicsState.fStroking);
|
||
}
|
||
|
||
static PdfResult PdfOp_rg(PdfContext* pdfContext, SkCanvas* canvas, PdfTokenLooper** looper) {
|
||
return PdfOp_RG_rg(pdfContext, canvas, &pdfContext->fGraphicsState.fNonStroking);
|
||
}
|
||
|
||
static 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()->numberValue(); pdfContext->fObjectStack.pop();
|
||
/*double y = */pdfContext->fObjectStack.top()->numberValue(); pdfContext->fObjectStack.pop();
|
||
/*double m = */pdfContext->fObjectStack.top()->numberValue(); pdfContext->fObjectStack.pop();
|
||
/*double c = */pdfContext->fObjectStack.top()->numberValue(); pdfContext->fObjectStack.pop();
|
||
|
||
colorOperator->fColorSpace = "DeviceCMYK";
|
||
// TODO(edisonn): Set color.
|
||
return kNYI_PdfResult;
|
||
}
|
||
|
||
static PdfResult PdfOp_K(PdfContext* pdfContext, SkCanvas* canvas, PdfTokenLooper** looper) {
|
||
return PdfOp_K_k(pdfContext, canvas, &pdfContext->fGraphicsState.fStroking);
|
||
}
|
||
|
||
static PdfResult PdfOp_k(PdfContext* pdfContext, SkCanvas* canvas, PdfTokenLooper** looper) {
|
||
return PdfOp_K_k(pdfContext, canvas, &pdfContext->fGraphicsState.fNonStroking);
|
||
}
|
||
|
||
static PdfResult PdfOp_W(PdfContext* pdfContext, SkCanvas* canvas, PdfTokenLooper** looper) {
|
||
pdfContext->fGraphicsState.fClipPath = pdfContext->fGraphicsState.fPath;
|
||
pdfContext->fGraphicsState.fHasClipPathToApply = true;
|
||
|
||
return kOK_PdfResult;
|
||
}
|
||
|
||
static 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;
|
||
}
|
||
|
||
static PdfResult PdfOp_BX(PdfContext* pdfContext, SkCanvas* canvas, PdfTokenLooper** looper) {
|
||
*looper = new PdfCompatibilitySectionLooper();
|
||
return kOK_PdfResult;
|
||
}
|
||
|
||
static 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;
|
||
}
|
||
|
||
static PdfResult PdfOp_BI(PdfContext* pdfContext, SkCanvas* canvas, PdfTokenLooper** looper) {
|
||
*looper = new PdfInlineImageLooper();
|
||
return kOK_PdfResult;
|
||
}
|
||
|
||
static 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;
|
||
}
|
||
|
||
static 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).
|
||
static PdfResult PdfOp_w(PdfContext* pdfContext, SkCanvas* canvas, PdfTokenLooper** looper) {
|
||
double lineWidth = pdfContext->fObjectStack.top()->numberValue(); 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).
|
||
static PdfResult PdfOp_J(PdfContext* pdfContext, SkCanvas* canvas, PdfTokenLooper** looper) {
|
||
pdfContext->fObjectStack.pop();
|
||
//double lineCap = pdfContext->fObjectStack.top()->numberValue(); pdfContext->fObjectStack.pop();
|
||
|
||
return kNYI_PdfResult;
|
||
}
|
||
|
||
//lineJoin j Set the line join style in the graphics state (see “Line Join Style” on page 153).
|
||
static PdfResult PdfOp_j(PdfContext* pdfContext, SkCanvas* canvas, PdfTokenLooper** looper) {
|
||
pdfContext->fObjectStack.pop();
|
||
//double lineJoin = pdfContext->fObjectStack.top()->numberValue(); pdfContext->fObjectStack.pop();
|
||
|
||
return kNYI_PdfResult;
|
||
}
|
||
|
||
//miterLimit M Set the miter limit in the graphics state (see “Miter Limit” on page 153).
|
||
static PdfResult PdfOp_M(PdfContext* pdfContext, SkCanvas* canvas, PdfTokenLooper** looper) {
|
||
pdfContext->fObjectStack.pop();
|
||
//double miterLimit = pdfContext->fObjectStack.top()->numberValue(); 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).
|
||
static 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).
|
||
static 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.
|
||
static 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).
|
||
static PdfResult PdfOp_gs(PdfContext* pdfContext, SkCanvas* canvas, PdfTokenLooper** looper) {
|
||
const char* name = pdfContext->fObjectStack.top()->nameValue(); pdfContext->fObjectStack.pop();
|
||
|
||
#ifdef PDF_TRACE
|
||
std::string str;
|
||
#endif
|
||
|
||
//Next, get the ExtGState Dictionary from the Resource Dictionary:
|
||
SkPdfDictionary* extGStateDictionary = pdfContext->fGraphicsState.fResources->ExtGState(pdfContext->fPdfDoc);
|
||
|
||
if (extGStateDictionary == NULL) {
|
||
#ifdef PDF_TRACE
|
||
printf("ExtGState is NULL!\n");
|
||
#endif
|
||
return kIgnoreError_PdfResult;
|
||
}
|
||
|
||
SkPdfObject* value = pdfContext->fPdfDoc->resolveReference(extGStateDictionary->get(name));
|
||
|
||
if (kNone_SkPdfObjectType == pdfContext->fPdfDoc->mapper()->mapGraphicsStateDictionary(value)) {
|
||
return kIgnoreError_PdfResult;
|
||
}
|
||
SkPdfGraphicsStateDictionary* gs = (SkPdfGraphicsStateDictionary*)value;
|
||
|
||
// 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(pdfContext->fPdfDoc);
|
||
}
|
||
|
||
if (gs->has_ca()) {
|
||
pdfContext->fGraphicsState.fNonStroking.fOpacity = gs->ca(pdfContext->fPdfDoc);
|
||
}
|
||
|
||
if (gs->has_LW()) {
|
||
pdfContext->fGraphicsState.fLineWidth = gs->LW(pdfContext->fPdfDoc);
|
||
}
|
||
|
||
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()->numberValue(); 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()->numberValue(); 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).
|
||
static PdfResult PdfOp_Tz(PdfContext* pdfContext, SkCanvas* canvas, PdfTokenLooper** looper) {
|
||
/*double scale = */pdfContext->fObjectStack.top()->numberValue(); pdfContext->fObjectStack.pop();
|
||
|
||
return kNYI_PdfResult;
|
||
}
|
||
|
||
//render Tr Set the text rendering mode, T
|
||
//mode, to render, which is an integer. Initial value: 0.
|
||
static PdfResult PdfOp_Tr(PdfContext* pdfContext, SkCanvas* canvas, PdfTokenLooper** looper) {
|
||
/*double render = */pdfContext->fObjectStack.top()->numberValue(); 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.
|
||
static PdfResult PdfOp_Ts(PdfContext* pdfContext, SkCanvas* canvas, PdfTokenLooper** looper) {
|
||
/*double rise = */pdfContext->fObjectStack.top()->numberValue(); pdfContext->fObjectStack.pop();
|
||
|
||
return kNYI_PdfResult;
|
||
}
|
||
|
||
//wx wy d0
|
||
static 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
|
||
static 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
|
||
static PdfResult PdfOp_sh(PdfContext* pdfContext, SkCanvas* canvas, PdfTokenLooper** looper) {
|
||
pdfContext->fObjectStack.pop();
|
||
|
||
return kNYI_PdfResult;
|
||
}
|
||
|
||
//name Do
|
||
static PdfResult PdfOp_Do(PdfContext* pdfContext, SkCanvas* canvas, PdfTokenLooper** looper) {
|
||
const char* name = pdfContext->fObjectStack.top()->nameValue(); pdfContext->fObjectStack.pop();
|
||
|
||
SkPdfDictionary* xObject = pdfContext->fGraphicsState.fResources->XObject(pdfContext->fPdfDoc);
|
||
|
||
if (xObject == NULL) {
|
||
#ifdef PDF_TRACE
|
||
printf("XObject is NULL!\n");
|
||
#endif
|
||
return kIgnoreError_PdfResult;
|
||
}
|
||
|
||
SkPdfObject* value = xObject->get(name);
|
||
value = pdfContext->fPdfDoc->resolveReference(value);
|
||
|
||
#ifdef PDF_TRACE
|
||
// value->ToString(str);
|
||
// printf("Do object value: %s\n", 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.
|
||
static 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”).
|
||
static 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.
|
||
static 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”).
|
||
static 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.
|
||
static PdfResult PdfOp_EMC(PdfContext* pdfContext, SkCanvas* canvas, PdfTokenLooper** looper) {
|
||
return kNYI_PdfResult;
|
||
}
|
||
|
||
static 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<std::string, int>::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) {
|
||
char keyword[256];
|
||
|
||
if (token.fType == kKeyword_TokenType && token.fKeywordLength < 256)
|
||
{
|
||
strncpy(keyword, token.fKeyword, token.fKeywordLength);
|
||
keyword[token.fKeywordLength] = '\0';
|
||
// TODO(edisonn): log trace flag (verbose, error, info, warning, ...)
|
||
PdfOperatorRenderer pdfOperatorRenderer = gPdfOps[keyword];
|
||
if (pdfOperatorRenderer) {
|
||
// caller, main work is done by pdfOperatorRenderer(...)
|
||
PdfTokenLooper* childLooper = NULL;
|
||
gRenderStats[pdfOperatorRenderer(fPdfContext, fCanvas, &childLooper)][keyword]++;
|
||
|
||
if (childLooper) {
|
||
childLooper->setUp(this);
|
||
childLooper->loop();
|
||
delete childLooper;
|
||
}
|
||
} else {
|
||
gRenderStats[kUnsupported_PdfResult][keyword]++;
|
||
}
|
||
}
|
||
else if (token.fType == kObject_TokenType)
|
||
{
|
||
fPdfContext->fObjectStack.push( token.fObject );
|
||
}
|
||
else {
|
||
// TODO(edisonn): deine or use assert not reached
|
||
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.
|
||
|
||
PdfContext* gPdfContext = NULL;
|
||
|
||
bool SkPdfRenderer::renderPage(int page, SkCanvas* canvas, const SkRect& dst) const {
|
||
if (!fPdfDoc) {
|
||
return false;
|
||
}
|
||
|
||
if (page < 0 || page >= pages()) {
|
||
return false;
|
||
}
|
||
|
||
SkPdfNativeTokenizer* tokenizer = fPdfDoc->tokenizerOfPage(page);
|
||
|
||
PdfContext pdfContext(fPdfDoc);
|
||
pdfContext.fOriginalMatrix = SkMatrix::I();
|
||
pdfContext.fGraphicsState.fResources = fPdfDoc->pageResources(page);
|
||
|
||
gPdfContext = &pdfContext;
|
||
|
||
// TODO(edisonn): get matrix stuff right.
|
||
SkScalar z = SkIntToScalar(0);
|
||
SkScalar w = dst.width();
|
||
SkScalar h = dst.height();
|
||
|
||
SkScalar wp = fPdfDoc->MediaBox(page).width();
|
||
SkScalar hp = fPdfDoc->MediaBox(page).height();
|
||
|
||
SkPoint pdfSpace[4] = {SkPoint::Make(z, z), SkPoint::Make(wp, z), SkPoint::Make(wp, hp), SkPoint::Make(z, hp)};
|
||
// SkPoint skiaSpace[4] = {SkPoint::Make(z, h), SkPoint::Make(w, h), SkPoint::Make(w, z), SkPoint::Make(z, z)};
|
||
|
||
// TODO(edisonn): add flag for this app to create sourunding buffer zone
|
||
// TODO(edisonn): add flagg for no clipping.
|
||
// Use larger image to make sure we do not draw anything outside of page
|
||
// could be used in tests.
|
||
|
||
#ifdef PDF_DEBUG_3X
|
||
SkPoint skiaSpace[4] = {SkPoint::Make(w+z, h+h), SkPoint::Make(w+w, h+h), SkPoint::Make(w+w, h+z), SkPoint::Make(w+z, h+z)};
|
||
#else
|
||
SkPoint skiaSpace[4] = {SkPoint::Make(z, h), SkPoint::Make(w, h), SkPoint::Make(w, z), SkPoint::Make(z, z)};
|
||
#endif
|
||
//SkPoint pdfSpace[2] = {SkPoint::Make(z, z), SkPoint::Make(w, h)};
|
||
//SkPoint skiaSpace[2] = {SkPoint::Make(w, z), SkPoint::Make(z, h)};
|
||
|
||
//SkPoint pdfSpace[2] = {SkPoint::Make(z, z), SkPoint::Make(z, h)};
|
||
//SkPoint skiaSpace[2] = {SkPoint::Make(z, h), SkPoint::Make(z, z)};
|
||
|
||
//SkPoint pdfSpace[3] = {SkPoint::Make(z, z), SkPoint::Make(z, h), SkPoint::Make(w, h)};
|
||
//SkPoint skiaSpace[3] = {SkPoint::Make(z, h), SkPoint::Make(z, z), SkPoint::Make(w, 0)};
|
||
|
||
SkAssertResult(pdfContext.fOriginalMatrix.setPolyToPoly(pdfSpace, skiaSpace, 4));
|
||
SkTraceMatrix(pdfContext.fOriginalMatrix, "Original matrix");
|
||
|
||
|
||
pdfContext.fGraphicsState.fMatrix = pdfContext.fOriginalMatrix;
|
||
pdfContext.fGraphicsState.fMatrixTm = pdfContext.fGraphicsState.fMatrix;
|
||
pdfContext.fGraphicsState.fMatrixTlm = pdfContext.fGraphicsState.fMatrix;
|
||
|
||
#ifndef PDF_DEBUG_NO_PAGE_CLIPING
|
||
canvas->clipRect(dst, SkRegion::kIntersect_Op, true);
|
||
#endif
|
||
|
||
canvas->setMatrix(pdfContext.fOriginalMatrix);
|
||
|
||
// erase with red before?
|
||
// SkPaint paint;
|
||
// paint.setColor(SK_ColorRED);
|
||
// canvas->drawRect(rect, paint);
|
||
|
||
PdfMainLooper looper(NULL, tokenizer, &pdfContext, canvas);
|
||
looper.loop();
|
||
|
||
delete tokenizer;
|
||
|
||
canvas->flush();
|
||
return true;
|
||
}
|
||
|
||
bool SkPdfRenderer::load(const SkString inputFileName) {
|
||
unload();
|
||
|
||
// TODO(edisonn): create static function that could return NULL if there are errors
|
||
fPdfDoc = new SkNativeParsedPDF(inputFileName.c_str());
|
||
if (fPdfDoc->pages() == 0) {
|
||
delete fPdfDoc;
|
||
fPdfDoc = NULL;
|
||
}
|
||
|
||
return fPdfDoc != NULL;
|
||
}
|
||
|
||
int SkPdfRenderer::pages() const {
|
||
return fPdfDoc != NULL ? fPdfDoc->pages() : 0;
|
||
}
|
||
|
||
void SkPdfRenderer::unload() {
|
||
delete fPdfDoc;
|
||
fPdfDoc = NULL;
|
||
}
|
||
|
||
SkRect SkPdfRenderer::MediaBox(int page) const {
|
||
SkASSERT(fPdfDoc);
|
||
return fPdfDoc->MediaBox(page);
|
||
}
|
||
|
||
size_t SkPdfRenderer::bytesUsed() const {
|
||
return fPdfDoc ? fPdfDoc->bytesUsed() : 0;
|
||
}
|