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gerrit-public.fairphone.software / platform / external / skqp / 62454a6603e98e60242ba3f4f64ae0bf7353d1fe / . / experimental / PdfViewer / SkPdfRenderer.cpp
blob: 2d79f13077768ba5c60532455f0d318736d5449d [file] [log] [blame]
/*
* Copyright 2013 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "SkPdfRenderer.h"
#include "SkBitmapDevice.h"
#include "SkCanvas.h"
#include "SkDevice.h"
#include "SkForceLinking.h"
#include "SkGraphics.h"
#include "SkImageDecoder.h"
#include "SkImageEncoder.h"
#include "SkOSFile.h"
#include "SkPicture.h"
#include "SkPdfFont.h"
#include "SkPdfGraphicsState.h"
#include "SkPdfHeaders_autogen.h"
#include "SkPdfMapper_autogen.h"
#include "SkPdfNativeTokenizer.h"
#include "SkPdfRenderer.h"
#include "SkPdfReporter.h"
#include "SkPdfUtils.h"
#include "SkStream.h"
#include "SkTypeface.h"
#include "SkTArray.h"
#include "SkTDict.h"
// TODO(edisonn): #ifdef these ones, as they are used only for debugging.
extern "C" SkPdfContext* gPdfContext;
extern "C" SkBitmap* gDumpBitmap;
extern "C" SkCanvas* gDumpCanvas;
__SK_FORCE_IMAGE_DECODER_LINKING;
// TODO(edisonn): tool, show what objects were read during rendering - will help to identify
// features with incomplete implementation
// TODO(edisonn): security - validate all the user input, all pdf!
// TODO(edisonn): testability -add option to render without text, or only render text
// Helper macros to load variables from stack, and automatically check their type.
#define EXPECT_OPERANDS(name,pdfContext,n) \
bool __failed = pdfContext->fObjectStack.count() < n; \
SkPdfREPORTCODE(const char* __operator_name = name); \
SkPdfREPORTCODE((void)__operator_name); \
SkPdfReportIf(pdfContext->fObjectStack.count() < n, \
kIgnoreError_SkPdfIssueSeverity, \
kStackOverflow_SkPdfIssue, \
"Not enought parameters.", NULL, pdfContext); \
SkDEBUGCODE(int __cnt = n);
#define POP_OBJ(pdfContext,name) \
SkDEBUGCODE(__cnt--); \
SkASSERT(__cnt >= 0); \
SkPdfNativeObject* name = NULL; \
__failed = __failed || pdfContext->fObjectStack.count() == 0; \
if (pdfContext->fObjectStack.count() > 0) { \
name = pdfContext->fObjectStack.top(); \
pdfContext->fObjectStack.pop(); \
}
// TODO(edisonn): make all pop function to use name##_obj
#define POP_NUMBER(pdfContext,name) \
SkDEBUGCODE(__cnt--); \
SkASSERT(__cnt >= 0); \
double name = 0; \
SkPdfNativeObject* name##_obj = NULL; \
__failed = __failed || pdfContext->fObjectStack.count() == 0; \
if (pdfContext->fObjectStack.count() > 0) { \
name##_obj = pdfContext->fObjectStack.top(); \
pdfContext->fObjectStack.pop(); \
if (!name##_obj || !name##_obj->isNumber()) { \
SkPdfReportUnexpectedType(kIgnoreError_SkPdfIssueSeverity, \
__operator_name, \
name##_obj, \
SkPdfNativeObject::_kNumber_PdfObjectType, \
NULL);\
__failed = true;\
} else { \
name = name##_obj->numberValue(); \
} \
}
#define POP_INTEGER(pdfContext,name) \
SkDEBUGCODE(__cnt--); \
SkASSERT(__cnt >= 0); \
int64_t name = 0; \
__failed = __failed || pdfContext->fObjectStack.count() == 0; \
SkPdfNativeObject* name##_obj = NULL; \
if (pdfContext->fObjectStack.count() > 0) { \
name##_obj = pdfContext->fObjectStack.top(); \
pdfContext->fObjectStack.pop(); \
if (!name##_obj || !name##_obj->isInteger()) { \
SkPdfReportUnexpectedType(kIgnoreError_SkPdfIssueSeverity, \
__operator_name, \
name##_obj, \
SkPdfNativeObject::kInteger_PdfObjectType, \
NULL);\
__failed = true;\
} else { \
name = name##_obj->intValue(); \
} \
}
#define POP_NUMBER_INTO(pdfContext,var) \
SkDEBUGCODE(__cnt--); \
SkASSERT(__cnt >= 0); \
__failed = __failed || pdfContext->fObjectStack.count() == 0; \
if (pdfContext->fObjectStack.count() > 0) { \
SkPdfNativeObject* tmp = pdfContext->fObjectStack.top(); \
pdfContext->fObjectStack.pop(); \
if (!tmp || !tmp->isNumber()) { \
SkPdfReportUnexpectedType(kIgnoreError_SkPdfIssueSeverity, \
__operator_name, \
tmp, \
SkPdfNativeObject::kInteger_PdfObjectType | \
SkPdfNativeObject::kReal_PdfObjectType, \
NULL);\
__failed = true;\
} else { \
var = tmp->numberValue(); \
} \
}
#define POP_NAME(pdfContext,name) \
SkDEBUGCODE(__cnt--); \
SkASSERT(__cnt >= 0); \
SkPdfNativeObject* name = NULL; \
__failed = __failed || pdfContext->fObjectStack.count() == 0; \
if (pdfContext->fObjectStack.count() > 0) { \
SkPdfNativeObject* tmp = pdfContext->fObjectStack.top(); \
pdfContext->fObjectStack.pop(); \
if (!tmp || !tmp->isName()) { \
SkPdfReportUnexpectedType(kIgnoreError_SkPdfIssueSeverity, \
__operator_name, \
tmp, \
SkPdfNativeObject::kName_PdfObjectType, \
NULL);\
__failed = true;\
} else { \
name = tmp; \
} \
}
#define POP_STRING(pdfContext,name) \
SkDEBUGCODE(__cnt--); \
SkASSERT(__cnt >= 0); \
SkPdfNativeObject* name = NULL; \
__failed = __failed || pdfContext->fObjectStack.count() == 0; \
if (pdfContext->fObjectStack.count() > 0) { \
SkPdfNativeObject* tmp = pdfContext->fObjectStack.top(); \
pdfContext->fObjectStack.pop(); \
if (!tmp || !tmp->isAnyString()) { \
SkPdfReportUnexpectedType(kIgnoreError_SkPdfIssueSeverity, \
__operator_name, \
tmp, \
SkPdfNativeObject::kString_PdfObjectType | \
SkPdfNativeObject::kHexString_PdfObjectType, \
NULL);\
__failed = true;\
} else { \
name = tmp; \
} \
}
#define POP_ARRAY(pdfContext,name) \
SkDEBUGCODE(__cnt--); \
SkASSERT(__cnt >= 0); \
SkPdfArray* name = NULL; \
__failed = __failed || pdfContext->fObjectStack.count() == 0; \
if (pdfContext->fObjectStack.count() > 0) { \
SkPdfNativeObject* tmp = pdfContext->fObjectStack.top(); \
pdfContext->fObjectStack.pop(); \
if (!tmp || !tmp->isArray()) { \
SkPdfReportUnexpectedType(kIgnoreError_SkPdfIssueSeverity, \
__operator_name, \
tmp, \
SkPdfNativeObject::kArray_PdfObjectType, \
NULL);\
__failed = true;\
} else { \
name = (SkPdfArray*)tmp; \
} \
}
#define CHECK_PARAMETERS() \
SkASSERT(__cnt == 0); \
if (__failed) return kIgnoreError_SkPdfResult;
NotOwnedString strings_DeviceRGB;
NotOwnedString strings_DeviceCMYK;
class StringsInit {
public:
StringsInit() {
NotOwnedString::init(&strings_DeviceRGB, "DeviceRGB");
NotOwnedString::init(&strings_DeviceCMYK, "DeviceCMYK");
}
};
// TODO(edisonn): this will not work in chrome! Find another solution!
StringsInit gStringsInit;
// TODO(edisonn): Document PdfTokenLooper and subclasses.
class PdfTokenLooper {
protected:
PdfTokenLooper* fParent;
SkPdfNativeTokenizer* fTokenizer;
SkPdfContext* fPdfContext;
SkCanvas* fCanvas;
public:
PdfTokenLooper(PdfTokenLooper* parent,
SkPdfNativeTokenizer* tokenizer,
SkPdfContext* pdfContext,
SkCanvas* canvas)
: fParent(parent), fTokenizer(tokenizer), fPdfContext(pdfContext), fCanvas(canvas) {}
virtual ~PdfTokenLooper() {}
virtual SkPdfResult consumeToken(PdfToken& token) = 0;
virtual void loop() = 0;
void setUp(PdfTokenLooper* parent) {
fParent = parent;
fTokenizer = parent->fTokenizer;
fPdfContext = parent->fPdfContext;
fCanvas = parent->fCanvas;
}
SkPdfNativeTokenizer* tokenizer() { return fTokenizer; }
};
class PdfMainLooper : public PdfTokenLooper {
public:
PdfMainLooper(PdfTokenLooper* parent,
SkPdfNativeTokenizer* tokenizer,
SkPdfContext* pdfContext,
SkCanvas* canvas)
: PdfTokenLooper(parent, tokenizer, pdfContext, canvas) {}
virtual SkPdfResult consumeToken(PdfToken& token);
virtual void loop();
};
class PdfInlineImageLooper : public PdfTokenLooper {
public:
PdfInlineImageLooper()
: PdfTokenLooper(NULL, NULL, NULL, NULL) {}
virtual SkPdfResult consumeToken(PdfToken& token);
virtual void loop();
SkPdfResult done();
};
class PdfCompatibilitySectionLooper : public PdfTokenLooper {
public:
PdfCompatibilitySectionLooper()
: PdfTokenLooper(NULL, NULL, NULL, NULL) {}
virtual SkPdfResult consumeToken(PdfToken& token);
virtual void loop();
};
// Utilities
static void setup_bitmap(SkBitmap* bitmap, int width, int height, SkColor color = SK_ColorWHITE) {
bitmap->setConfig(SkBitmap::kARGB_8888_Config, width, height);
bitmap->allocPixels();
bitmap->eraseColor(color);
}
// TODO(edisonn): synonyms? /DeviceRGB and /RGB mean the same thing. Context dependent.
static int GetColorSpaceComponents(NotOwnedString& colorSpace) {
if (colorSpace.equals("DeviceCMYK")) {
return 4;
} else if (colorSpace.equals("DeviceGray") ||
colorSpace.equals("CalGray") ||
colorSpace.equals("Indexed")) {
return 1;
} else if (colorSpace.equals("DeviceRGB") ||
colorSpace.equals("CalRGB") ||
colorSpace.equals("Lab")) {
return 3;
} else {
return 0;
}
}
SkMatrix SkMatrixFromPdfMatrix(double array[6]) {
SkMatrix matrix;
matrix.setAll(SkDoubleToScalar(array[0]),
SkDoubleToScalar(array[2]),
SkDoubleToScalar(array[4]),
SkDoubleToScalar(array[1]),
SkDoubleToScalar(array[3]),
SkDoubleToScalar(array[5]),
SkDoubleToScalar(0),
SkDoubleToScalar(0),
SkDoubleToScalar(1));
return matrix;
}
SkMatrix SkMatrixFromPdfArray(SkPdfArray* pdfArray) {
double array[6];
// TODO(edisonn): security issue, ret if size() != 6
if (pdfArray == NULL) {
SkPdfReport(kIgnoreError_SkPdfIssueSeverity, kNullObject_SkPdfIssue,
"null array passed to build matrix", NULL, NULL);
return SkMatrix::I();
}
if (pdfArray->size() != 6) {
SkPdfReport(kIgnoreError_SkPdfIssueSeverity, kUnexpectedArraySize_SkPdfIssue,
"null array passed to build matrix", pdfArray, NULL);
return SkMatrix::I();
}
for (int i = 0; i < 6; i++) {
const SkPdfNativeObject* elem = pdfArray->operator [](i);
if (elem == NULL || !elem->isNumber()) {
SkPdfReportUnexpectedType(kIgnoreError_SkPdfIssueSeverity, NULL, elem,
SkPdfNativeObject::_kNumber_PdfObjectType, NULL);
return SkMatrix::I();
}
array[i] = elem->numberValue();
}
return SkMatrixFromPdfMatrix(array);
}
// TODO(edisonn): debug code, used to analyze rendering when we find bugs.
extern "C" SkPdfNativeDoc* gDoc;
SkBitmap* gDumpBitmap = NULL;
SkCanvas* gDumpCanvas = NULL;
char gLastKeyword[100] = "";
int gLastOpKeyword = -1;
int gReadOp = 0;
#ifdef PDF_TRACE_DIFF_IN_PNG
char allOpWithVisualEffects[100] = ",S,s,f,F,f*,B,B*,b,b*,n,Tj,TJ,\',\",d0,d1,sh,EI,Do,EX,";
static bool hasVisualEffect(const char* pdfOp) {
return true;
if (*pdfOp == '\0') return false;
char markedPdfOp[100] = ",";
strcat(markedPdfOp, pdfOp);
strcat(markedPdfOp, ",");
return (strstr(allOpWithVisualEffects, markedPdfOp) != NULL);
}
#endif // PDF_TRACE_DIFF_IN_PNG
// TODO(edisonn): Pass SkPdfContext and SkCanvasd only with the define for instrumentation.
static bool readToken(SkPdfNativeTokenizer* fTokenizer, PdfToken* token) {
bool ret = fTokenizer->readToken(token);
gReadOp++;
gLastOpKeyword++;
#ifdef PDF_TRACE_DIFF_IN_PNG
// TODO(edisonn): this code is used to make a step by step history of all the draw operations
// so we could find the step where something is wrong.
if (gLastKeyword[0] && hasVisualEffect(gLastKeyword)) {
gDumpCanvas->flush();
SkBitmap bitmap;
setup_bitmap(&bitmap, gDumpBitmap->width(), gDumpBitmap->height());
memcpy(bitmap.getPixels(), gDumpBitmap->getPixels(), gDumpBitmap->getSize());
SkAutoTUnref<SkBaseDevice> device(SkNEW_ARGS(SkBitmapDevice, (bitmap)));
SkCanvas canvas(device);
// draw context stuff here
SkPaint blueBorder;
blueBorder.setColor(SK_ColorBLUE);
blueBorder.setStyle(SkPaint::kStroke_Style);
blueBorder.setTextSize(SkDoubleToScalar(20));
SkString str;
const SkClipStack* clipStack = gDumpCanvas->getClipStack();
if (clipStack) {
SkClipStack::Iter iter(*clipStack, SkClipStack::Iter::kBottom_IterStart);
const SkClipStack::Element* elem;
double y = 0;
int total = 0;
while ((elem = iter.next()) != NULL) {
total++;
y += 30;
switch (elem->getType()) {
case SkClipStack::Element::kRect_Type:
canvas.drawRect(elem->getRect(), blueBorder);
canvas.drawText("Rect Clip", strlen("Rect Clip"),
SkDoubleToScalar(10), SkDoubleToScalar(y), blueBorder);
break;
case SkClipStack::Element::kPath_Type:
canvas.drawPath(elem->getPath(), blueBorder);
canvas.drawText("Path Clip", strlen("Path Clip"),
SkDoubleToScalar(10), SkDoubleToScalar(y), blueBorder);
break;
case SkClipStack::Element::kEmpty_Type:
canvas.drawText("Empty Clip!!!", strlen("Empty Clip!!!"),
SkDoubleToScalar(10), SkDoubleToScalar(y), blueBorder);
break;
default:
canvas.drawText("Unkown Clip!!!", strlen("Unkown Clip!!!"),
SkDoubleToScalar(10), SkDoubleToScalar(y), blueBorder);
break;
}
}
y += 30;
str.printf("Number of clips in stack: %i", total);
canvas.drawText(str.c_str(), str.size(),
SkDoubleToScalar(10), SkDoubleToScalar(y), blueBorder);
}
const SkRegion& clipRegion = gDumpCanvas->getTotalClip();
SkPath clipPath;
if (clipRegion.getBoundaryPath(&clipPath)) {
SkPaint redBorder;
redBorder.setColor(SK_ColorRED);
redBorder.setStyle(SkPaint::kStroke_Style);
canvas.drawPath(clipPath, redBorder);
}
canvas.flush();
SkString out;
// TODO(edisonn): overlay on top of image inf about the clip , grafic state, the stack
out.appendf("/tmp/log_step_by_step/step-%i-%s.png",
gLastOpKeyword, gLastKeyword);
SkImageEncoder::EncodeFile(out.c_str(), bitmap, SkImageEncoder::kPNG_Type, 100);
}
if (ret && token->fType == kKeyword_TokenType &&
token->fKeyword && token->fKeywordLength > 0 && token->fKeywordLength < 100) {
strncpy(gLastKeyword, token->fKeyword, token->fKeywordLength);
gLastKeyword[token->fKeywordLength] = '\0';
} else {
gLastKeyword[0] = '\0';
}
#endif
return ret;
}
// Signature for all the operations available in pdf.
typedef SkPdfResult (*PdfOperatorRenderer)(SkPdfContext*, SkCanvas*, PdfTokenLooper**);
// Map of string to function pointer for all known draw operations.
SkTDict<PdfOperatorRenderer> gPdfOps(100);
// Temp code to measure what operands fail.
template <typename T> class SkTDictWithDefaultConstructor : public SkTDict<T> {
public:
SkTDictWithDefaultConstructor() : SkTDict<T>(10) {}
};
SkTDictWithDefaultConstructor<int> gRenderStats[kCount_SkPdfResult];
const char* gRenderStatsNames[kCount_SkPdfResult] = {
"Success",
"Partially implemented",
"Not yet implemented",
"Ignore Error",
"Error",
"Unsupported/Unknown"
};
static SkPdfResult DrawText(SkPdfContext* pdfContext,
const SkPdfNativeObject* _str,
SkCanvas* canvas)
{
SkPdfFont* skfont = pdfContext->fGraphicsState.fSkFont;
if (skfont == NULL) {
skfont = SkPdfFont::Default();
}
if (_str == NULL || !_str->isAnyString()) {
SkPdfReportUnexpectedType(kIgnoreError_SkPdfIssueSeverity,
"DrawText",
_str,
SkPdfNativeObject::_kAnyString_PdfObjectType,
pdfContext);
return kIgnoreError_SkPdfResult;
}
const SkPdfString* str = (const SkPdfString*)_str;
SkUnencodedText binary(str);
SkDecodedText decoded;
if (skfont->encoding() == NULL) {
SkPdfReport(kIgnoreError_SkPdfIssueSeverity, kMissingEncoding_SkPdfIssue,
"draw text", _str, pdfContext);
return kNYI_SkPdfResult;
}
skfont->encoding()->decodeText(binary, &decoded);
SkPaint paint;
// TODO(edisonn): does size 0 mean anything special?
if (pdfContext->fGraphicsState.fCurFontSize != 0) {
paint.setTextSize(SkDoubleToScalar(pdfContext->fGraphicsState.fCurFontSize));
}
// TODO(edisonn): implement font scaler
// if (fCurFont && fCurFont->GetFontScale() != 0) {
// paint.setTextScaleX(SkFloatToScalar(fCurFont->GetFontScale() / 100.0));
// }
pdfContext->fGraphicsState.applyGraphicsState(&paint, false);
skfont->drawText(decoded, &paint, pdfContext, canvas);
return kOK_SkPdfResult;
}
// TODO(edisonn): create header files with declarations!
SkPdfResult PdfOp_q(SkPdfContext* pdfContext, SkCanvas* canvas, PdfTokenLooper** looper);
SkPdfResult PdfOp_Q(SkPdfContext* pdfContext, SkCanvas* canvas, PdfTokenLooper** looper);
SkPdfResult PdfOp_Tw(SkPdfContext* pdfContext, SkCanvas* canvas, PdfTokenLooper** looper);
SkPdfResult PdfOp_Tc(SkPdfContext* pdfContext, SkCanvas* canvas, PdfTokenLooper** looper);
// TODO(edisonn): perf!!!
static SkColorTable* getGrayColortable() {
static SkColorTable* grayColortable = NULL;
if (grayColortable == NULL) {
SkPMColor* colors = new SkPMColor[256];
for (int i = 0 ; i < 256; i++) {
colors[i] = SkPreMultiplyARGB(255, i, i, i);
}
grayColortable = new SkColorTable(colors, 256);
}
return grayColortable;
}
static SkBitmap* transferImageStreamToBitmap(const unsigned char* uncompressedStream,
size_t uncompressedStreamLength,
int width, int height, int bytesPerLine,
int bpc, const SkString& colorSpace,
bool transparencyMask) {
SkBitmap* bitmap = new SkBitmap();
//int components = GetColorSpaceComponents(colorSpace);
//#define MAX_COMPONENTS 10
// TODO(edisonn): assume start of lines are aligned at 32 bits?
// Is there a faster way to load the uncompressed stream into a bitmap?
// minimal support for now
if ((colorSpace.equals("DeviceRGB") || colorSpace.equals("RGB")) && bpc == 8) {
SkColor* uncompressedStreamArgb = (SkColor*)malloc(width * height * sizeof(SkColor));
for (int h = 0 ; h < height; h++) {
long i = width * (h);
for (int w = 0 ; w < width; w++) {
uncompressedStreamArgb[i] = SkColorSetRGB(uncompressedStream[3 * w],
uncompressedStream[3 * w + 1],
uncompressedStream[3 * w + 2]);
i++;
}
uncompressedStream += bytesPerLine;
}
bitmap->setConfig(SkBitmap::kARGB_8888_Config, width, height);
bitmap->setPixels(uncompressedStreamArgb);
}
else if ((colorSpace.equals("DeviceGray") || colorSpace.equals("Gray")) && bpc == 8) {
unsigned char* uncompressedStreamA8 = (unsigned char*)malloc(width * height);
for (int h = 0 ; h < height; h++) {
long i = width * (h);
for (int w = 0 ; w < width; w++) {
uncompressedStreamA8[i] = transparencyMask ? 255 - uncompressedStream[w] :
uncompressedStream[w];
i++;
}
uncompressedStream += bytesPerLine;
}
bitmap->setConfig(transparencyMask ? SkBitmap::kA8_Config : SkBitmap::kIndex8_Config,
width, height);
bitmap->setPixels(uncompressedStreamA8, transparencyMask ? NULL : getGrayColortable());
}
// TODO(edisonn): pass color space and context here?
SkPdfReport(kCodeWarning_SkPdfIssueSeverity, kNYI_SkPdfIssue, "Color space NYI", NULL, NULL);
return bitmap;
}
// TODO(edisonn): preserve A1 format that skia knows, + fast convert from 111, 222, 444 to closest
// skia format.
// This functions returns the image, it does not look at the smask.
static SkBitmap* getImageFromObjectCore(SkPdfContext* pdfContext,
SkPdfImageDictionary* image, bool transparencyMask) {
if (image == NULL || !image->hasStream()) {
SkPdfReportUnexpectedType(kIgnoreError_SkPdfIssueSeverity, "Missing stream", image,
SkPdfNativeObject::_kStream_PdfObjectType, pdfContext);
return NULL;
}
int bpc = (int)image->BitsPerComponent(pdfContext->fPdfDoc);
int width = (int)image->Width(pdfContext->fPdfDoc);
int height = (int)image->Height(pdfContext->fPdfDoc);
SkString colorSpace("DeviceRGB");
bool indexed = false;
SkPMColor colors[256];
int cnt = 0;
if (image->isColorSpaceAName(pdfContext->fPdfDoc)) {
colorSpace = image->getColorSpaceAsName(pdfContext->fPdfDoc);
} else if (image->isColorSpaceAArray(pdfContext->fPdfDoc)) {
SkPdfArray* array = image->getColorSpaceAsArray(pdfContext->fPdfDoc);
if (array && array->size() == 4 && array->objAtAIndex(0)->isName("Indexed") &&
(array->objAtAIndex(1)->isName("DeviceRGB") ||
array->objAtAIndex(1)->isName("RGB")) &&
array->objAtAIndex(2)->isInteger() &&
array->objAtAIndex(3)->isHexString()
) {
SkPdfReport(kCodeWarning_SkPdfIssueSeverity, kNYI_SkPdfIssue, "Color space NYI",
image, pdfContext);
indexed = true;
cnt = (int)array->objAtAIndex(2)->intValue() + 1;
if (cnt > 256) {
SkPdfReport(kCodeWarning_SkPdfIssueSeverity, kNYI_SkPdfIssue,
"Color space feature NYI, cnt > 256", image, pdfContext);
return NULL;
}
NotOwnedString data = array->objAtAIndex(3)->strRef();
if (data.fBytes != (unsigned int)cnt * 3) {
SkPdfReport(kIgnoreError_SkPdfIssueSeverity, kIncostistentSizes_SkPdfIssue,
"Image color table mismatch color space specs", array, pdfContext);
return NULL;
}
for (int i = 0 ; i < cnt; i++) {
colors[i] = SkPreMultiplyARGB(0xff,
data.fBuffer[3 * i],
data.fBuffer[3 * i + 1],
data.fBuffer[3 * i + 2]);
}
}
}
// TODO(edisonn): implement image masks.
/* bool imageMask = image->imageMask();
if (imageMask) {
if (bpc != 0 && bpc != 1) {
// TODO(edisonn): report warning to be used in testing.
return SkBitmap();
}
bpc = 1;
}
*/
const unsigned char* uncompressedStream = NULL;
size_t uncompressedStreamLength = 0;
SkPdfStream* stream = (SkPdfStream*)image;
if (!stream || !stream->GetFilteredStreamRef(&uncompressedStream, &uncompressedStreamLength) ||
uncompressedStream == NULL || uncompressedStreamLength == 0) {
SkPdfReportUnexpectedType(kIgnoreError_SkPdfIssueSeverity, "Missing stream", stream,
SkPdfNativeObject::_kStream_PdfObjectType, pdfContext);
return NULL;
}
SkPdfStreamCommonDictionary* streamDict = (SkPdfStreamCommonDictionary*)stream;
if (streamDict->has_Filter() &&
((streamDict->isFilterAName(NULL) &&
streamDict->getFilterAsName(NULL).equals("DCTDecode")) ||
(streamDict->isFilterAArray(NULL) &&
streamDict->getFilterAsArray(NULL)->size() > 0 &&
streamDict->getFilterAsArray(NULL)->objAtAIndex(0)->isName() &&
streamDict->getFilterAsArray(NULL)->objAtAIndex(0)->nameValue2()
.equals("DCTDecode")))) {
SkBitmap* bitmap = new SkBitmap();
SkImageDecoder::DecodeMemory(uncompressedStream, uncompressedStreamLength, bitmap);
return bitmap;
}
// TODO(edisonn): assumes RGB for now, since it is the only one implemented
if (indexed) {
SkBitmap* bitmap = new SkBitmap();
bitmap->setConfig(SkBitmap::kIndex8_Config, width, height);
SkColorTable* colorTable = new SkColorTable(colors, cnt);
bitmap->setPixels((void*)uncompressedStream, colorTable);
return bitmap;
}
int bytesPerLine = (int)(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* getImageFromObject(SkPdfContext* pdfContext, SkPdfImageDictionary* image,
bool transparencyMask) {
if (!transparencyMask) {
if (!image->hasData(SkPdfNativeObject::kBitmap_Data)) {
SkBitmap* bitmap = getImageFromObjectCore(pdfContext, image, transparencyMask);
image->setData(bitmap, SkPdfNativeObject::kBitmap_Data);
}
return (SkBitmap*) image->data(SkPdfNativeObject::kBitmap_Data);
} else {
return getImageFromObjectCore(pdfContext, image, transparencyMask);
}
}
static SkBitmap* getSmaskFromObject(SkPdfContext* 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.
SkPdfReport(kCodeWarning_SkPdfIssueSeverity, kNYI_SkPdfIssue,
"implement GS SMask. Default to empty right now.", obj, pdfContext);
return pdfContext->fGraphicsState.fSMask;
}
static SkPdfResult doXObject_Image(SkPdfContext* pdfContext, SkCanvas* canvas,
SkPdfImageDictionary* skpdfimage) {
if (skpdfimage == NULL) {
return kIgnoreError_SkPdfResult;
}
SkBitmap* image = getImageFromObject(pdfContext, skpdfimage, false);
SkBitmap* sMask = getSmaskFromObject(pdfContext, skpdfimage);
canvas->save();
canvas->setMatrix(pdfContext->fGraphicsState.fCTM);
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.fCTM;
solveImageFlip.preConcat(flip);
canvas->setMatrix(solveImageFlip);
#ifdef PDF_TRACE
SkPoint final[4] = {SkPoint::Make(z, z), SkPoint::Make(one, z),
SkPoint::Make(one, one), SkPoint::Make(z, one)};
solveImageFlip.mapPoints(final, 4);
printf("IMAGE rect = ");
for (int i = 0; i < 4; i++) {
printf("(%f %f) ", SkScalarToDouble(final[i].x()), SkScalarToDouble(final[i].y()));
}
printf("\n");
#endif // PDF_TRACE
SkRect dst = SkRect::MakeXYWH(SkDoubleToScalar(0.0), SkDoubleToScalar(0.0),
SkDoubleToScalar(1.0), SkDoubleToScalar(1.0));
// TODO(edisonn): soft mask type? alpha/luminosity.
SkPdfReport(kCodeWarning_SkPdfIssueSeverity, kNYI_SkPdfIssue,
"implement soft mask type", skpdfimage, pdfContext);
SkPaint paint;
pdfContext->fGraphicsState.applyGraphicsState(&paint, false);
if (!sMask || sMask->empty()) {
canvas->drawBitmapRect(*image, dst, &paint);
} else {
canvas->saveLayer(&dst, &paint);
canvas->drawBitmapRect(*image, dst, NULL);
SkPaint xfer;
xfer.setXfermodeMode(SkXfermode::kSrcOut_Mode);
canvas->drawBitmapRect(*sMask, dst, &xfer);
canvas->restore();
}
canvas->restore();
return kPartial_SkPdfResult;
}
//TODO(edisonn): options for implementing isolation and knockout
// 1) emulate them (current solution)
// PRO: simple
// CON: will need to use readPixels, which means serious perf issues
// 2) Compile a plan for an array of matrixes, compose the result at the end
// PRO: might be faster then 1, no need to readPixels
// CON: multiple drawings (but on smaller areas), pay a price at loading pdf to
// compute a pdf draw plan
// on average, a load with empty draw is 100ms on all the skps we have, for complete sites
// 3) support them natively in SkCanvas
// PRO: simple
// CON: we would still need to use a form of readPixels anyway, so perf might be the same as 1)
// 4) compile a plan using pathops, and render once without any fancy rules with backdrop
// PRO: simple, fast
// CON: pathops must be bug free first + time to compute new paths
// pay a price at loading pdf to compute a pdf draw plan
// on average, a load with empty draw is 100ms on all the skps we have, for complete sites
// 5) for knockout, render the objects in reverse order, and add every object to the clip, and any
// new draw will be cliped
static void doGroup_before(SkPdfContext* pdfContext, SkCanvas* canvas, SkRect bbox,
SkPdfTransparencyGroupDictionary* tgroup, bool page) {
SkRect bboxOrig = bbox;
SkBitmap backdrop;
bool isolatedGroup = tgroup->I(pdfContext->fPdfDoc);
// bool knockoutGroup = tgroup->K(pdfContext->fPdfDoc);
SkPaint paint;
pdfContext->fGraphicsState.applyGraphicsState(&paint, false);
canvas->saveLayer(&bboxOrig, isolatedGroup ? &paint : NULL);
}
// TODO(edisonn): non isolation should probably be implemented in skia
//static void doGroup_after(SkPdfContext* pdfContext, SkCanvas* canvas, SkRect bbox,
// SkPdfTransparencyGroupDictionary* tgroup) {
// if not isolated
// canvas->drawBitmapRect(backdrop, bboxOrig, NULL);
//}
static SkPdfResult doXObject_Form(SkPdfContext* pdfContext, SkCanvas* canvas,
SkPdfType1FormDictionary* skobj) {
if (!skobj || !skobj->hasStream()) {
SkPdfReportUnexpectedType(kIgnoreError_SkPdfIssueSeverity, "Missing stream", skobj,
SkPdfNativeObject::_kStream_PdfObjectType, pdfContext);
return kIgnoreError_SkPdfResult;
}
if (!skobj->has_BBox()) {
SkPdfReport(kIgnoreError_SkPdfIssueSeverity, kMissingRequiredKey_SkPdfIssue, "BBox",
skobj, pdfContext);
return kIgnoreError_SkPdfResult;
}
PdfOp_q(pdfContext, canvas, NULL);
if (skobj->Resources(pdfContext->fPdfDoc)) {
pdfContext->fGraphicsState.fResources = skobj->Resources(pdfContext->fPdfDoc);
}
SkTraceMatrix(pdfContext->fGraphicsState.fCTM, "Current matrix");
if (skobj->has_Matrix()) {
pdfContext->fGraphicsState.fCTM.preConcat(skobj->Matrix(pdfContext->fPdfDoc));
SkMatrix matrix = pdfContext->fGraphicsState.fCTM;
matrix.preScale(SkDoubleToScalar(1), SkDoubleToScalar(-1));
pdfContext->fGraphicsState.fMatrixTm = matrix;
pdfContext->fGraphicsState.fMatrixTlm = matrix;
// TODO(edisonn): text matrixes mosltly NYI
}
SkTraceMatrix(pdfContext->fGraphicsState.fCTM, "Total matrix");
pdfContext->fGraphicsState.fContentStreamMatrix = pdfContext->fGraphicsState.fCTM;
canvas->setMatrix(pdfContext->fGraphicsState.fCTM);
SkRect bbox = skobj->BBox(pdfContext->fPdfDoc);
// TODO(edisonn): constants (AA) from settings.
canvas->clipRect(bbox, SkRegion::kIntersect_Op, false);
// This is a group?
if (skobj->has_Group()) {
SkPdfTransparencyGroupDictionary* tgroup = skobj->Group(pdfContext->fPdfDoc);
doGroup_before(pdfContext, canvas, bbox, tgroup, false);
}
SkPdfStream* stream = (SkPdfStream*)skobj;
SkPdfNativeTokenizer* tokenizer =
pdfContext->fPdfDoc->tokenizerOfStream(stream, pdfContext->fTmpPageAllocator);
if (tokenizer != NULL) {
PdfMainLooper looper(NULL, tokenizer, pdfContext, canvas);
looper.loop();
delete tokenizer;
}
if (skobj->has_Group()) {
canvas->restore();
}
PdfOp_Q(pdfContext, canvas, NULL);
return kPartial_SkPdfResult;
}
static SkPdfResult doXObject_Pattern(SkPdfContext* pdfContext, SkCanvas* canvas,
SkPdfType1PatternDictionary* skobj) {
if (!skobj || !skobj->hasStream()) {
SkPdfReportUnexpectedType(kIgnoreError_SkPdfIssueSeverity, "Missing stream",
skobj, SkPdfNativeObject::_kStream_PdfObjectType, pdfContext);
return kIgnoreError_SkPdfResult;
}
if (!skobj->has_BBox()) {
SkPdfReport(kIgnoreError_SkPdfIssueSeverity, kMissingRequiredKey_SkPdfIssue, "BBox",
skobj, pdfContext);
return kIgnoreError_SkPdfResult;
}
PdfOp_q(pdfContext, canvas, NULL);
if (skobj->Resources(pdfContext->fPdfDoc)) {
pdfContext->fGraphicsState.fResources = skobj->Resources(pdfContext->fPdfDoc);
}
SkTraceMatrix(pdfContext->fGraphicsState.fContentStreamMatrix, "Current Content stream matrix");
if (skobj->has_Matrix()) {
pdfContext->fGraphicsState.fContentStreamMatrix.preConcat(
skobj->Matrix(pdfContext->fPdfDoc));
}
SkTraceMatrix(pdfContext->fGraphicsState.fContentStreamMatrix, "Total Content stream matrix");
canvas->setMatrix(pdfContext->fGraphicsState.fContentStreamMatrix);
pdfContext->fGraphicsState.fCTM = pdfContext->fGraphicsState.fContentStreamMatrix;
SkRect bbox = skobj->BBox(pdfContext->fPdfDoc);
// TODO(edisonn): constants (AA) from settings.
canvas->clipRect(bbox, SkRegion::kIntersect_Op, false);
SkPdfStream* stream = (SkPdfStream*)skobj;
SkPdfNativeTokenizer* tokenizer =
pdfContext->fPdfDoc->tokenizerOfStream(stream, pdfContext->fTmpPageAllocator);
if (tokenizer != NULL) {
PdfMainLooper looper(NULL, tokenizer, pdfContext, canvas);
looper.loop();
delete tokenizer;
}
PdfOp_Q(pdfContext, canvas, NULL);
return kPartial_SkPdfResult;
}
// TODO(edisonn): PS NYI
//static SkPdfResult doXObject_PS(SkPdfContext* pdfContext, SkCanvas* canvas,
// const SkPdfNativeObject* obj) {
// return kNYI_SkPdfResult;
//}
SkPdfResult doType3Char(SkPdfContext* pdfContext, SkCanvas* canvas, const SkPdfNativeObject* skobj,
SkRect bBox, SkMatrix matrix, double textSize) {
if (!skobj || !skobj->hasStream()) {
SkPdfReportUnexpectedType(kIgnoreError_SkPdfIssueSeverity, "Missing stream", skobj,
SkPdfNativeObject::_kStream_PdfObjectType, pdfContext);
return kIgnoreError_SkPdfResult;
}
PdfOp_q(pdfContext, canvas, NULL);
pdfContext->fGraphicsState.fMatrixTm.preConcat(matrix);
pdfContext->fGraphicsState.fMatrixTm.preScale(SkDoubleToScalar(textSize),
SkDoubleToScalar(textSize));
pdfContext->fGraphicsState.fMatrixTlm = pdfContext->fGraphicsState.fMatrixTm;
pdfContext->fGraphicsState.fCTM = pdfContext->fGraphicsState.fMatrixTm;
pdfContext->fGraphicsState.fCTM.preScale(SkDoubleToScalar(1), SkDoubleToScalar(-1));
SkTraceMatrix(pdfContext->fGraphicsState.fCTM, "Total matrix");
canvas->setMatrix(pdfContext->fGraphicsState.fCTM);
SkRect rm = bBox;
pdfContext->fGraphicsState.fCTM.mapRect(&rm);
SkTraceRect(rm, "bbox mapped");
// TODO(edisonn): constants (AA) from settings.
canvas->clipRect(bBox, SkRegion::kIntersect_Op, false);
SkPdfStream* stream = (SkPdfStream*)skobj;
SkPdfNativeTokenizer* tokenizer =
pdfContext->fPdfDoc->tokenizerOfStream(stream, pdfContext->fTmpPageAllocator);
if (tokenizer != NULL) {
PdfMainLooper looper(NULL, tokenizer, pdfContext, canvas);
looper.loop();
delete tokenizer;
}
PdfOp_Q(pdfContext, canvas, NULL);
return kPartial_SkPdfResult;
}
// The PDF could be corrupted so a dict refers recursively to the same dict, if this happens
// we end up with a stack overflow and crash.
class CheckRecursiveRendering {
SkPdfNativeObject* fObj;
public:
CheckRecursiveRendering(SkPdfNativeObject* obj) : fObj(obj) {
SkASSERT(!obj->inRendering());
obj->startRendering();
}
~CheckRecursiveRendering() {
SkASSERT(fObj->inRendering());
fObj->doneRendering();
}
static bool IsInRendering(const SkPdfNativeObject* obj) {
return obj->inRendering();
}
};
static SkPdfResult doXObject(SkPdfContext* pdfContext, SkCanvas* canvas, SkPdfNativeObject* obj) {
if (CheckRecursiveRendering::IsInRendering(obj)) {
SkPdfReport(kIgnoreError_SkPdfIssueSeverity, kRecursiveReferencing_SkPdfIssue,
"Recursive reverencing is invalid in draw objects", obj, pdfContext);
return kIgnoreError_SkPdfResult;
}
CheckRecursiveRendering checkRecursion(obj);
switch (pdfContext->fPdfDoc->mapper()->mapXObjectDictionary(obj))
{
case kImageDictionary_SkPdfNativeObjectType:
return doXObject_Image(pdfContext, canvas, (SkPdfImageDictionary*)obj);
case kType1FormDictionary_SkPdfNativeObjectType:
return doXObject_Form(pdfContext, canvas, (SkPdfType1FormDictionary*)obj);
//case kObjectDictionaryXObjectPS_SkPdfNativeObjectType:
//return doXObject_PS(skxobj.asPS());
default: {
if (pdfContext->fPdfDoc->mapper()->mapType1PatternDictionary(obj) !=
kNone_SkPdfNativeObjectType) {
SkPdfType1PatternDictionary* pattern = (SkPdfType1PatternDictionary*)obj;
return doXObject_Pattern(pdfContext, canvas, pattern);
}
SkPdfReport(kCodeWarning_SkPdfIssueSeverity, kNYI_SkPdfIssue, "doXObject",
obj, pdfContext);
}
}
return kIgnoreError_SkPdfResult;
}
static SkPdfResult doPage(SkPdfContext* pdfContext, SkCanvas* canvas,
SkPdfPageObjectDictionary* skobj) {
if (!skobj || !skobj->isContentsAStream(pdfContext->fPdfDoc)) {
SkPdfReportUnexpectedType(kIgnoreError_SkPdfIssueSeverity, "Missing stream", skobj,
SkPdfNativeObject::_kStream_PdfObjectType, pdfContext);
return kNYI_SkPdfResult;
}
SkPdfStream* stream = skobj->getContentsAsStream(pdfContext->fPdfDoc);
if (!stream) {
SkPdfReportUnexpectedType(kIgnoreError_SkPdfIssueSeverity, "Missing stream",
skobj, SkPdfNativeObject::_kStream_PdfObjectType, pdfContext);
return kIgnoreError_SkPdfResult;
}
pdfContext->fGraphicsState.fResources = skobj->Resources(pdfContext->fPdfDoc);
if (!pdfContext->fGraphicsState.fResources) {
// It might be null because we have not implemented yet inheritance.
return kIgnoreError_SkPdfResult;
}
if (CheckRecursiveRendering::IsInRendering(skobj)) {
SkPdfReport(kIgnoreError_SkPdfIssueSeverity, kRecursiveReferencing_SkPdfIssue,
"Recursive reverencing is invalid in draw objects", skobj, pdfContext);
return kIgnoreError_SkPdfResult;
}
CheckRecursiveRendering checkRecursion(skobj);
PdfOp_q(pdfContext, canvas, NULL);
// TODO(edisonn): MediaBox can be inherited!!!!
SkPdfReport(kCodeWarning_SkPdfIssueSeverity, kNYI_SkPdfIssue, "MediaBox inheritance NYI",
NULL, pdfContext);
SkRect bbox = skobj->MediaBox(pdfContext->fPdfDoc);
if (skobj->has_Group()) {
SkPdfTransparencyGroupDictionary* tgroup = skobj->Group(pdfContext->fPdfDoc);
doGroup_before(pdfContext, canvas, bbox, tgroup, true);
} else {
canvas->save();
}
SkPdfNativeTokenizer* tokenizer =
pdfContext->fPdfDoc->tokenizerOfStream(stream, pdfContext->fTmpPageAllocator);
if (tokenizer != NULL) {
PdfMainLooper looper(NULL, tokenizer, pdfContext, canvas);
looper.loop();
delete tokenizer;
}
canvas->restore();
PdfOp_Q(pdfContext, canvas, NULL);
return kPartial_SkPdfResult;
}
SkPdfResult PdfOp_q(SkPdfContext* pdfContext, SkCanvas* canvas, PdfTokenLooper** looper) {
pdfContext->fStateStack.push(pdfContext->fGraphicsState);
canvas->save();
pdfContext->fObjectStack.nest();
return kOK_SkPdfResult;
}
SkPdfResult PdfOp_Q(SkPdfContext* pdfContext, SkCanvas* canvas, PdfTokenLooper** looper) {
if (pdfContext->fStateStack.count() > 0) {
pdfContext->fGraphicsState = pdfContext->fStateStack.top();
pdfContext->fStateStack.pop();
canvas->restore();
if (pdfContext->fObjectStack.nests() == 0) {
SkPdfReport(kIgnoreError_SkPdfIssueSeverity, kStackNestingOverflow_SkPdfIssue,
"stack nesting overflow (q/Q)", NULL, pdfContext);
return kIgnoreError_SkPdfResult;
} else {
pdfContext->fObjectStack.unnest();
}
} else {
SkPdfReport(kIgnoreError_SkPdfIssueSeverity, kStackOverflow_SkPdfIssue,
"stack overflow (q/Q)", NULL, pdfContext);
return kIgnoreError_SkPdfResult;
}
return kOK_SkPdfResult;
}
static SkPdfResult PdfOp_cm(SkPdfContext* pdfContext, SkCanvas* canvas, PdfTokenLooper** looper) {
EXPECT_OPERANDS("cm", pdfContext, 6);
POP_NUMBER(pdfContext, f);
POP_NUMBER(pdfContext, e);
POP_NUMBER(pdfContext, d);
POP_NUMBER(pdfContext, c);
POP_NUMBER(pdfContext, b);
POP_NUMBER(pdfContext, a);
CHECK_PARAMETERS();
double array[6] = {a, b, c, d, e, f};
// a b
// c d
// e f
// 0 1
// 2 3
// 4 5
// sx ky
// kx sy
// tx ty
SkMatrix matrix = SkMatrixFromPdfMatrix(array);
pdfContext->fGraphicsState.fCTM.preConcat(matrix);
#ifdef PDF_TRACE
printf("cm ");
for (int i = 0 ; i < 6 ; i++) {
printf("%f ", array[i]);
}
printf("\n");
SkTraceMatrix(pdfContext->fGraphicsState.fCTM, "cm");
#endif
return kOK_SkPdfResult;
}
//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 SkPdfResult PdfOp_TL(SkPdfContext* pdfContext, SkCanvas* canvas, PdfTokenLooper** looper) {
EXPECT_OPERANDS("TL", pdfContext, 1);
POP_NUMBER(pdfContext, ty);
CHECK_PARAMETERS();
pdfContext->fGraphicsState.fTextLeading = ty;
return kOK_SkPdfResult;
}
static SkPdfResult PdfOp_Td(SkPdfContext* pdfContext, SkCanvas* canvas, PdfTokenLooper** looper) {
EXPECT_OPERANDS("Td", pdfContext, 2);
POP_NUMBER(pdfContext, ty);
POP_NUMBER(pdfContext, tx);
CHECK_PARAMETERS();
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_SkPdfResult;
}
static SkPdfResult PdfOp_TD(SkPdfContext* pdfContext, SkCanvas* canvas, PdfTokenLooper** looper) {
EXPECT_OPERANDS("TD", pdfContext, 2)
POP_NUMBER(pdfContext, ty);
POP_NUMBER(pdfContext, tx);
CHECK_PARAMETERS();
// 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);
SkPdfResult ret = PdfOp_Td(pdfContext, canvas, looper);
return ret;
}
static SkPdfResult PdfOp_Tm(SkPdfContext* pdfContext, SkCanvas* canvas, PdfTokenLooper** looper) {
EXPECT_OPERANDS("Tm", pdfContext, 6);
POP_NUMBER(pdfContext, f);
POP_NUMBER(pdfContext, e);
POP_NUMBER(pdfContext, d);
POP_NUMBER(pdfContext, c);
POP_NUMBER(pdfContext, b);
POP_NUMBER(pdfContext, a);
CHECK_PARAMETERS();
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.fCTM);
matrix.preScale(SkDoubleToScalar(1), SkDoubleToScalar(-1));
// TODO(edisonn): NYI - Text positioning.
SkPdfReport(kCodeWarning_SkPdfIssueSeverity, kNYI_SkPdfIssue,
"Text positioning not implemented for 2+ chars", NULL, pdfContext);
pdfContext->fGraphicsState.fMatrixTm = matrix;
pdfContext->fGraphicsState.fMatrixTlm = matrix;;
return kPartial_SkPdfResult;
}
//— 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 SkPdfResult PdfOp_T_star(SkPdfContext* 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);
SkPdfResult ret = PdfOp_Td(pdfContext, canvas, looper);
return ret;
}
static SkPdfResult PdfOp_m(SkPdfContext* pdfContext, SkCanvas* canvas, PdfTokenLooper** looper) {
if (pdfContext->fGraphicsState.fPathClosed) {
pdfContext->fGraphicsState.fPath.reset();
pdfContext->fGraphicsState.fPathClosed = false;
}
EXPECT_OPERANDS("m", pdfContext, 2);
POP_NUMBER(pdfContext, y);
POP_NUMBER(pdfContext, x);
CHECK_PARAMETERS();
pdfContext->fGraphicsState.fCurPosY = y;
pdfContext->fGraphicsState.fCurPosX = x;
pdfContext->fGraphicsState.fPath.moveTo(SkDoubleToScalar(pdfContext->fGraphicsState.fCurPosX),
SkDoubleToScalar(pdfContext->fGraphicsState.fCurPosY));
return kOK_SkPdfResult;
}
static SkPdfResult PdfOp_l(SkPdfContext* pdfContext, SkCanvas* canvas, PdfTokenLooper** looper) {
if (pdfContext->fGraphicsState.fPathClosed) {
pdfContext->fGraphicsState.fPath.reset();
pdfContext->fGraphicsState.fPathClosed = false;
}
EXPECT_OPERANDS("l", pdfContext, 2);
POP_NUMBER(pdfContext, y);
POP_NUMBER(pdfContext, x);
CHECK_PARAMETERS();
pdfContext->fGraphicsState.fCurPosY = y;
pdfContext->fGraphicsState.fCurPosX = x;
pdfContext->fGraphicsState.fPath.lineTo(SkDoubleToScalar(pdfContext->fGraphicsState.fCurPosX),
SkDoubleToScalar(pdfContext->fGraphicsState.fCurPosY));
return kOK_SkPdfResult;
}
static SkPdfResult PdfOp_c(SkPdfContext* pdfContext, SkCanvas* canvas, PdfTokenLooper** looper) {
if (pdfContext->fGraphicsState.fPathClosed) {
pdfContext->fGraphicsState.fPath.reset();
pdfContext->fGraphicsState.fPathClosed = false;
}
EXPECT_OPERANDS("c", pdfContext, 6);
POP_NUMBER(pdfContext, y3);
POP_NUMBER(pdfContext, x3);
POP_NUMBER(pdfContext, y2);
POP_NUMBER(pdfContext, x2);
POP_NUMBER(pdfContext, y1);
POP_NUMBER(pdfContext, x1);
CHECK_PARAMETERS();
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_SkPdfResult;
}
static SkPdfResult PdfOp_v(SkPdfContext* pdfContext, SkCanvas* canvas, PdfTokenLooper** looper) {
if (pdfContext->fGraphicsState.fPathClosed) {
pdfContext->fGraphicsState.fPath.reset();
pdfContext->fGraphicsState.fPathClosed = false;
}
EXPECT_OPERANDS("v", pdfContext, 4);
POP_NUMBER(pdfContext, y3);
POP_NUMBER(pdfContext, x3);
POP_NUMBER(pdfContext, y2);
POP_NUMBER(pdfContext, x2);
CHECK_PARAMETERS();
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_SkPdfResult;
}
static SkPdfResult PdfOp_y(SkPdfContext* pdfContext, SkCanvas* canvas, PdfTokenLooper** looper) {
if (pdfContext->fGraphicsState.fPathClosed) {
pdfContext->fGraphicsState.fPath.reset();
pdfContext->fGraphicsState.fPathClosed = false;
}
EXPECT_OPERANDS("y", pdfContext, 4);
POP_NUMBER(pdfContext, y3);
POP_NUMBER(pdfContext, x3);
POP_NUMBER(pdfContext, y1);
POP_NUMBER(pdfContext, x1);
CHECK_PARAMETERS();
double y2 = pdfContext->fGraphicsState.fCurPosY;
double x2 = 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_SkPdfResult;
}
static SkPdfResult PdfOp_re(SkPdfContext* pdfContext, SkCanvas* canvas, PdfTokenLooper** looper) {
if (pdfContext->fGraphicsState.fPathClosed) {
pdfContext->fGraphicsState.fPath.reset();
pdfContext->fGraphicsState.fPathClosed = false;
}
EXPECT_OPERANDS("re", pdfContext, 4);
POP_NUMBER(pdfContext, height);
POP_NUMBER(pdfContext, width);
POP_NUMBER(pdfContext, y);
POP_NUMBER(pdfContext, x);
CHECK_PARAMETERS();
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_SkPdfResult;
}
static SkPdfResult PdfOp_h(SkPdfContext* pdfContext, SkCanvas* canvas, PdfTokenLooper** looper) {
pdfContext->fGraphicsState.fPath.close();
return kOK_SkPdfResult;
}
static SkPdfResult PdfOp_fillAndStroke(SkPdfContext* pdfContext, SkCanvas* canvas,
bool fill, bool stroke, bool close, bool evenOdd) {
SkPath path = pdfContext->fGraphicsState.fPath;
if (close) {
path.close();
}
canvas->setMatrix(pdfContext->fGraphicsState.fCTM);
SkPaint paint;
SkPoint line[2];
if (fill && !stroke && path.isLine(line)) {
paint.setStyle(SkPaint::kStroke_Style);
// TODO(edisonn): implement this with patterns
pdfContext->fGraphicsState.applyGraphicsState(&paint, false);
paint.setStrokeWidth(SkDoubleToScalar(0));
canvas->drawPath(path, paint);
} else {
if (fill) {
if (strncmp((char*)pdfContext->fGraphicsState.fNonStroking.fColorSpace.fBuffer,
"Pattern", strlen("Pattern")) == 0 &&
pdfContext->fGraphicsState.fNonStroking.fPattern != NULL) {
// TODO(edisonn): we can use a shader here, like imageshader to draw fast.
PdfOp_q(pdfContext, canvas, NULL);
if (evenOdd) {
path.setFillType(SkPath::kEvenOdd_FillType);
}
canvas->clipPath(path);
if (pdfContext->fPdfDoc
->mapper()
->mapType1PatternDictionary(pdfContext->fGraphicsState
.fNonStroking
.fPattern)
!= kNone_SkPdfNativeObjectType) {
SkPdfType1PatternDictionary* pattern
= (SkPdfType1PatternDictionary*)pdfContext->fGraphicsState
.fNonStroking
.fPattern;
// TODO(edisonn): make PaintType constants
if (pattern->PaintType(pdfContext->fPdfDoc) == 1) {
// TODO(edisonn): don't use abs, iterate as asked, if the cells intersect
// it will change the result iterating in reverse
// remove then the following bounds.sort();
int xStep = abs((int)pattern->XStep(pdfContext->fPdfDoc));
int yStep = abs((int)pattern->YStep(pdfContext->fPdfDoc));
SkPdfReport(kCodeWarning_SkPdfIssueSeverity, kNYI_SkPdfIssue,
"paterns x/y step is forced to positive number",
pattern, pdfContext);
SkRect bounds = path.getBounds();
bounds.sort();
SkScalar x;
SkScalar y;
y = bounds.top();
int totalx = 0;
int totaly = 0;
while (y < bounds.bottom()) {
x = bounds.left();
totalx = 0;
while (x < bounds.right()) {
doXObject(pdfContext, canvas, pattern);
pdfContext->fGraphicsState.fContentStreamMatrix.preTranslate(
SkIntToScalar(xStep), SkIntToScalar(0));
totalx += xStep;
x += SkIntToScalar(xStep);
}
pdfContext->fGraphicsState.fContentStreamMatrix.preTranslate(
SkIntToScalar(-totalx), SkIntToScalar(0));
pdfContext->fGraphicsState.fContentStreamMatrix.preTranslate(
SkIntToScalar(0), SkIntToScalar(-yStep));
totaly += yStep;
y += SkIntToScalar(yStep);
}
pdfContext->fGraphicsState.fContentStreamMatrix.preTranslate(
SkIntToScalar(0), SkIntToScalar(totaly));
}
}
PdfOp_Q(pdfContext, canvas, NULL);
} else {
paint.setStyle(SkPaint::kFill_Style);
if (evenOdd) {
path.setFillType(SkPath::kEvenOdd_FillType);
}
pdfContext->fGraphicsState.applyGraphicsState(&paint, false);
canvas->drawPath(path, paint);
}
}
if (stroke) {
if (false && strncmp((char*)pdfContext->fGraphicsState.fNonStroking.fColorSpace.fBuffer,
"Pattern", strlen("Pattern")) == 0) {
// TODO(edisonn): implement Pattern for strokes
paint.setStyle(SkPaint::kStroke_Style);
paint.setColor(SK_ColorGREEN);
// reset it, just in case it messes up the stroke
path.setFillType(SkPath::kWinding_FillType);
canvas->drawPath(path, paint);
} else {
paint.setStyle(SkPaint::kStroke_Style);
pdfContext->fGraphicsState.applyGraphicsState(&paint, true);
// reset it, just in case it messes up the stroke
path.setFillType(SkPath::kWinding_FillType);
canvas->drawPath(path, paint);
}
}
}
pdfContext->fGraphicsState.fPath.reset();
// TODO(edisonn): implement scale/zoom
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 kOK_SkPdfResult;
}
static SkPdfResult PdfOp_S(SkPdfContext* pdfContext, SkCanvas* canvas, PdfTokenLooper** looper) {
return PdfOp_fillAndStroke(pdfContext, canvas, false, true, false, false);
}
static SkPdfResult PdfOp_s(SkPdfContext* pdfContext, SkCanvas* canvas, PdfTokenLooper** looper) {
return PdfOp_fillAndStroke(pdfContext, canvas, false, true, true, false);
}
static SkPdfResult PdfOp_F(SkPdfContext* pdfContext, SkCanvas* canvas, PdfTokenLooper** looper) {
return PdfOp_fillAndStroke(pdfContext, canvas, true, false, false, false);
}
static SkPdfResult PdfOp_f(SkPdfContext* pdfContext, SkCanvas* canvas, PdfTokenLooper** looper) {
return PdfOp_fillAndStroke(pdfContext, canvas, true, false, false, false);
}
static SkPdfResult PdfOp_f_star(SkPdfContext* pdfContext, SkCanvas* canvas,
PdfTokenLooper** looper) {
return PdfOp_fillAndStroke(pdfContext, canvas, true, false, false, true);
}
static SkPdfResult PdfOp_B(SkPdfContext* pdfContext, SkCanvas* canvas, PdfTokenLooper** looper) {
return PdfOp_fillAndStroke(pdfContext, canvas, true, true, false, false);
}
static SkPdfResult PdfOp_B_star(SkPdfContext* pdfContext, SkCanvas* canvas,
PdfTokenLooper** looper) {
return PdfOp_fillAndStroke(pdfContext, canvas, true, true, false, true);
}
static SkPdfResult PdfOp_b(SkPdfContext* pdfContext, SkCanvas* canvas, PdfTokenLooper** looper) {
return PdfOp_fillAndStroke(pdfContext, canvas, true, true, true, false);
}
static SkPdfResult PdfOp_b_star(SkPdfContext* pdfContext, SkCanvas* canvas,
PdfTokenLooper** looper) {
return PdfOp_fillAndStroke(pdfContext, canvas, true, true, true, true);
}
static SkPdfResult PdfOp_n(SkPdfContext* pdfContext, SkCanvas* canvas, PdfTokenLooper** looper) {
canvas->setMatrix(pdfContext->fGraphicsState.fCTM);
if (pdfContext->fGraphicsState.fHasClipPathToApply) {
#ifndef PDF_DEBUG_NO_CLIPING
canvas->clipPath(pdfContext->fGraphicsState.fClipPath, SkRegion::kIntersect_Op, true);
#endif
}
pdfContext->fGraphicsState.fHasClipPathToApply = false;
pdfContext->fGraphicsState.fPathClosed = true;
return kOK_SkPdfResult;
}
static SkPdfResult PdfOp_BT(SkPdfContext* pdfContext, SkCanvas* canvas, PdfTokenLooper** looper) {
pdfContext->fGraphicsState.fTextBlock = true;
SkMatrix matrix = pdfContext->fGraphicsState.fCTM;
matrix.preScale(SkDoubleToScalar(1), SkDoubleToScalar(-1));
pdfContext->fGraphicsState.fMatrixTm = matrix;
pdfContext->fGraphicsState.fMatrixTlm = matrix;
return kPartial_SkPdfResult;
}
static SkPdfResult PdfOp_ET(SkPdfContext* pdfContext, SkCanvas* canvas, PdfTokenLooper** looper) {
if (!pdfContext->fGraphicsState.fTextBlock) {
SkPdfReport(kIgnoreError_SkPdfIssueSeverity, kMissingBT_SkPdfIssue, "ET without BT", NULL,
pdfContext);
return kIgnoreError_SkPdfResult;
}
// TODO(edisonn): anything else to be done once we are done with draw text? Like restore stack?
return kOK_SkPdfResult;
}
static SkPdfResult skpdfGraphicsStateApplyFontCore(SkPdfContext* pdfContext,
const SkPdfNativeObject* fontName, double fontSize) {
#ifdef PDF_TRACE
printf("font name: %s\n", fontName->nameValue2().c_str());
#endif
if (!pdfContext->fGraphicsState.fResources->Font(pdfContext->fPdfDoc)) {
// TODO(edisonn): try to recover and draw it any way?
SkPdfReport(kIgnoreError_SkPdfIssueSeverity, kMissingFont_SkPdfIssue,
"No font", fontName, pdfContext);
return kIgnoreError_SkPdfResult;
}
SkPdfNativeObject* objFont
= pdfContext->fGraphicsState.fResources->Font(pdfContext->fPdfDoc)->get(fontName);
objFont = pdfContext->fPdfDoc->resolveReference(objFont);
if (kNone_SkPdfNativeObjectType == pdfContext->fPdfDoc->mapper()->mapFontDictionary(objFont)) {
// TODO(edisonn): try to recover and draw it any way?
SkPdfReport(kIgnoreError_SkPdfIssueSeverity, kInvalidFont_SkPdfIssue,
"Invalid font", objFont, pdfContext);
return kIgnoreError_SkPdfResult;
}
SkPdfFontDictionary* fd = (SkPdfFontDictionary*)objFont;
SkPdfFont* skfont = SkPdfFont::fontFromPdfDictionary(pdfContext->fPdfDoc, fd);
if (skfont) {
pdfContext->fGraphicsState.fSkFont = skfont;
}
pdfContext->fGraphicsState.fCurFontSize = fontSize;
return kOK_SkPdfResult;
}
//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 SkPdfResult PdfOp_Tf(SkPdfContext* pdfContext, SkCanvas* canvas, PdfTokenLooper** looper) {
EXPECT_OPERANDS("Tf", pdfContext, 2);
POP_NUMBER(pdfContext, fontSize);
POP_NAME(pdfContext, fontName);
CHECK_PARAMETERS();
return skpdfGraphicsStateApplyFontCore(pdfContext, fontName, fontSize);
}
static SkPdfResult PdfOp_Tj(SkPdfContext* pdfContext, SkCanvas* canvas, PdfTokenLooper** looper) {
EXPECT_OPERANDS("Tj", pdfContext, 1);
POP_STRING(pdfContext, str);
CHECK_PARAMETERS();
if (!pdfContext->fGraphicsState.fTextBlock) {
// TODO(edisonn): try to recover and draw it any way?
SkPdfReport(kIgnoreError_SkPdfIssueSeverity, kMissingBT_SkPdfIssue, "Tj without BT", NULL,
pdfContext);
return kIgnoreError_SkPdfResult;
}
SkPdfResult ret = DrawText(pdfContext, str, canvas);
return ret;
}
static SkPdfResult PdfOp_quote(SkPdfContext* pdfContext, SkCanvas* canvas,
PdfTokenLooper** looper) {
if (!pdfContext->fGraphicsState.fTextBlock) {
// TODO(edisonn): try to recover and draw it any way?
SkPdfReport(kIgnoreError_SkPdfIssueSeverity, kMissingBT_SkPdfIssue,
"' without BT", NULL, pdfContext);
return kIgnoreError_SkPdfResult;
}
PdfOp_T_star(pdfContext, canvas, looper);
// Do not pop, and push, just transfer the param to Tj
return PdfOp_Tj(pdfContext, canvas, looper);
}
static SkPdfResult PdfOp_doublequote(SkPdfContext* pdfContext, SkCanvas* canvas,
PdfTokenLooper** looper) {
if (!pdfContext->fGraphicsState.fTextBlock) {
// TODO(edisonn): try to recover and draw it any way?
SkPdfReport(kIgnoreError_SkPdfIssueSeverity, kMissingBT_SkPdfIssue,
"\" without BT", NULL, pdfContext);
return kIgnoreError_SkPdfResult;
}
EXPECT_OPERANDS("\"", pdfContext, 3);
POP_OBJ(pdfContext, str);
POP_OBJ(pdfContext, ac);
POP_OBJ(pdfContext, aw);
CHECK_PARAMETERS();
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_SkPdfResult;
}
static SkPdfResult PdfOp_TJ(SkPdfContext* pdfContext, SkCanvas* canvas, PdfTokenLooper** looper) {
EXPECT_OPERANDS("Tf", pdfContext, 1);
POP_ARRAY(pdfContext, array);
CHECK_PARAMETERS();
if (!pdfContext->fGraphicsState.fTextBlock) {
// TODO(edisonn): try to recover and draw it any way?
SkPdfReport(kIgnoreError_SkPdfIssueSeverity, kMissingBT_SkPdfIssue, "TJ without BT", NULL,
pdfContext);
return kIgnoreError_SkPdfResult;
}
if (!array->isArray()) {
SkPdfReportUnexpectedType(kIgnoreError_SkPdfIssueSeverity, NULL, array,
SkPdfNativeObject::kArray_PdfObjectType, pdfContext);
return kIgnoreError_SkPdfResult;
}
for( int i=0; i<static_cast<int>(array->size()); i++ )
{
if (!(*array)[i]) {
SkPdfReportUnexpectedType(kIgnoreError_SkPdfIssueSeverity,
"element [i] is null, no element should be null",
array,
SkPdfNativeObject::_kAnyString_PdfObjectType |
SkPdfNativeObject::_kNumber_PdfObjectType,
pdfContext);
} else if( (*array)[i]->isAnyString()) {
SkPdfNativeObject* 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);
} else {
SkPdfReportUnexpectedType(kIgnoreError_SkPdfIssueSeverity, "wrong type", (*array)[i],
SkPdfNativeObject::kArray_PdfObjectType |
SkPdfNativeObject::_kNumber_PdfObjectType,
pdfContext);
}
}
return kPartial_SkPdfResult; // TODO(edisonn): Implement fully DrawText before returing OK.
}
static SkPdfResult PdfOp_CS_cs(SkPdfContext* pdfContext, SkCanvas* canvas,
SkPdfColorOperator* colorOperator) {
EXPECT_OPERANDS("CS/cs", pdfContext, 1);
POP_NAME(pdfContext, name);
CHECK_PARAMETERS();
//Next, get the ColorSpace Dictionary from the Resource Dictionary:
SkPdfDictionary* colorSpaceResource
= pdfContext->fGraphicsState.fResources->ColorSpace(pdfContext->fPdfDoc);
SkPdfNativeObject* colorSpace
= colorSpaceResource ? pdfContext->fPdfDoc
->resolveReference(colorSpaceResource->get(name)) :
name;
if (colorSpace == NULL) {
colorOperator->fColorSpace = name->strRef();
} else {
#ifdef PDF_TRACE
printf("CS = %s\n", colorSpace->toString(0, 0).c_str());
#endif // PDF_TRACE
if (colorSpace->isName()) {
colorOperator->fColorSpace = colorSpace->strRef();
} else if (colorSpace->isArray()) {
int cnt = colorSpace->size();
if (cnt == 0) {
SkPdfReport(kIgnoreError_SkPdfIssueSeverity, kIncostistentSizes_SkPdfIssue,
"color space has length 0", colorSpace, pdfContext);
return kIgnoreError_SkPdfResult;
}
SkPdfNativeObject* type = colorSpace->objAtAIndex(0);
type = pdfContext->fPdfDoc->resolveReference(type);
if (type->isName("ICCBased")) {
if (cnt != 2) {
SkPdfReport(kIgnoreError_SkPdfIssueSeverity, kIncostistentSizes_SkPdfIssue,
"ICCBased color space must have an array with 2 elements",
colorSpace, pdfContext);
return kIgnoreError_SkPdfResult;
}
SkPdfNativeObject* prop = colorSpace->objAtAIndex(1);
prop = pdfContext->fPdfDoc->resolveReference(prop);
#ifdef PDF_TRACE
printf("ICCBased prop = %s\n", prop->toString(0, 0).c_str());
#endif // PDF_TRACE
// TODO(edisonn): hack
if (prop && prop->isDictionary() && prop->get("N") &&
prop->get("N")->isInteger() && prop->get("N")->intValue() == 3) {
colorOperator->setColorSpace(&strings_DeviceRGB);
return kPartial_SkPdfResult;
}
return kNYI_SkPdfResult;
}
}
}
return kPartial_SkPdfResult;
}
static SkPdfResult PdfOp_CS(SkPdfContext* pdfContext, SkCanvas* canvas, PdfTokenLooper** looper) {
return PdfOp_CS_cs(pdfContext, canvas, &pdfContext->fGraphicsState.fStroking);
}
static SkPdfResult PdfOp_cs(SkPdfContext* pdfContext, SkCanvas* canvas, PdfTokenLooper** looper) {
return PdfOp_CS_cs(pdfContext, canvas, &pdfContext->fGraphicsState.fNonStroking);
}
static SkPdfResult PdfOp_SC_sc(SkPdfContext* pdfContext, SkCanvas* canvas,
SkPdfColorOperator* colorOperator) {
double c[4];
// int64_t v[4];
int n = GetColorSpaceComponents(colorOperator->fColorSpace);
bool doubles = true;
if (colorOperator->fColorSpace.equals("Indexed")) {
doubles = false;
}
#ifdef PDF_TRACE
printf("color space = %s, N = %i\n", colorOperator->fColorSpace.fBuffer, n);
#endif
EXPECT_OPERANDS("SC/sc", pdfContext, n);
for (int i = n - 1; i >= 0 ; i--) {
if (doubles) {
POP_NUMBER_INTO(pdfContext, c[i]);
// } else {
// v[i] = pdfContext->fObjectStack.top()->intValue(); pdfContext->fObjectStack.pop();
}
}
CHECK_PARAMETERS();
// TODO(edisonn): Now, set that color. Only DeviceRGB supported.
// TODO(edisonn): do possible field values to enum at parsing time!
// TODO(edisonn): support also abbreviations /DeviceRGB == /RGB
if (colorOperator->fColorSpace.equals("DeviceRGB") ||
colorOperator->fColorSpace.equals("RGB")) {
colorOperator->setRGBColor(SkColorSetRGB((U8CPU)(255*c[0]),
(U8CPU)(255*c[1]),
(U8CPU)(255*c[2])));
}
return kPartial_SkPdfResult;
}
static SkPdfResult PdfOp_SC(SkPdfContext* pdfContext, SkCanvas* canvas, PdfTokenLooper** looper) {
return PdfOp_SC_sc(pdfContext, canvas, &pdfContext->fGraphicsState.fStroking);
}
static SkPdfResult PdfOp_sc(SkPdfContext* pdfContext, SkCanvas* canvas, PdfTokenLooper** looper) {
return PdfOp_SC_sc(pdfContext, canvas, &pdfContext->fGraphicsState.fNonStroking);
}
static SkPdfResult PdfOp_SCN_scn(SkPdfContext* pdfContext, SkCanvas* canvas,
SkPdfColorOperator* colorOperator) {
if (pdfContext->fObjectStack.count() > 0 && pdfContext->fObjectStack.top()->isName()) {
SkPdfNativeObject* name = pdfContext->fObjectStack.top(); pdfContext->fObjectStack.pop();
SkPdfDictionary* patternResources
= pdfContext->fGraphicsState.fResources->Pattern(pdfContext->fPdfDoc);
if (patternResources == NULL) {
#ifdef PDF_TRACE
printf("ExtGState is NULL!\n");
#endif
return kIgnoreError_SkPdfResult;
}
colorOperator->setPatternColorSpace(
pdfContext->fPdfDoc->resolveReference(patternResources->get(name)));
}
// TODO(edisonn): SCN supports more color spaces than SCN. Read and implement spec.
PdfOp_SC_sc(pdfContext, canvas, colorOperator);
return kPartial_SkPdfResult;
}
static SkPdfResult PdfOp_SCN(SkPdfContext* pdfContext, SkCanvas* canvas, PdfTokenLooper** looper) {
return PdfOp_SCN_scn(pdfContext, canvas, &pdfContext->fGraphicsState.fStroking);
}
static SkPdfResult PdfOp_scn(SkPdfContext* pdfContext, SkCanvas* canvas, PdfTokenLooper** looper) {
return PdfOp_SCN_scn(pdfContext, canvas, &pdfContext->fGraphicsState.fNonStroking);
}
static SkPdfResult PdfOp_G_g(SkPdfContext* pdfContext, SkCanvas* canvas,
SkPdfColorOperator* colorOperator) {
EXPECT_OPERANDS("G/g", pdfContext, 1);
POP_NUMBER(pdfContext, gray);
CHECK_PARAMETERS();
// TODO(edisonn): limit gray in [0, 1]
// TODO(edisonn): HACK - it should be device gray, but not suported right now
colorOperator->fColorSpace = strings_DeviceRGB;
colorOperator->setRGBColor(SkColorSetRGB((U8CPU)(255 * gray),
(U8CPU)(255 * gray),
(U8CPU)(255 * gray)));
return kPartial_SkPdfResult;
}
static SkPdfResult PdfOp_G(SkPdfContext* pdfContext, SkCanvas* canvas, PdfTokenLooper** looper) {
return PdfOp_G_g(pdfContext, canvas, &pdfContext->fGraphicsState.fStroking);
}
static SkPdfResult PdfOp_g(SkPdfContext* pdfContext, SkCanvas* canvas, PdfTokenLooper** looper) {
return PdfOp_G_g(pdfContext, canvas, &pdfContext->fGraphicsState.fNonStroking);
}
static SkPdfResult PdfOp_RG_rg(SkPdfContext* pdfContext, SkCanvas* canvas,
SkPdfColorOperator* colorOperator) {
EXPECT_OPERANDS("RG/rg", pdfContext, 3);
POP_NUMBER(pdfContext, b);
POP_NUMBER(pdfContext, g);
POP_NUMBER(pdfContext, r);
CHECK_PARAMETERS();
colorOperator->fColorSpace = strings_DeviceRGB;
colorOperator->setRGBColor(SkColorSetRGB((U8CPU)(255*r), (U8CPU)(255*g), (U8CPU)(255*b)));
return kOK_SkPdfResult;
}
static SkPdfResult PdfOp_RG(SkPdfContext* pdfContext, SkCanvas* canvas, PdfTokenLooper** looper) {
return PdfOp_RG_rg(pdfContext, canvas, &pdfContext->fGraphicsState.fStroking);
}
static SkPdfResult PdfOp_rg(SkPdfContext* pdfContext, SkCanvas* canvas, PdfTokenLooper** looper) {
return PdfOp_RG_rg(pdfContext, canvas, &pdfContext->fGraphicsState.fNonStroking);
}
static SkPdfResult PdfOp_K_k(SkPdfContext* pdfContext, SkCanvas* canvas,
SkPdfColorOperator* colorOperator) {
// TODO(edisonn): spec has some rules about overprint, implement them.
EXPECT_OPERANDS("K/k", pdfContext, 4);
POP_NUMBER(pdfContext, k);
POP_NUMBER(pdfContext, y);
POP_NUMBER(pdfContext, m);
POP_NUMBER(pdfContext, c);
CHECK_PARAMETERS();
// TODO(edisonn): really silly quick way to remove compiler warning
if (k + y + m + c == 0) {
return kNYI_SkPdfResult;
}
//colorOperator->fColorSpace = strings_DeviceCMYK;
// TODO(edisonn): Set color.
return kNYI_SkPdfResult;
}
static SkPdfResult PdfOp_K(SkPdfContext* pdfContext, SkCanvas* canvas, PdfTokenLooper** looper) {
return PdfOp_K_k(pdfContext, canvas, &pdfContext->fGraphicsState.fStroking);
}
static SkPdfResult PdfOp_k(SkPdfContext* pdfContext, SkCanvas* canvas, PdfTokenLooper** looper) {
return PdfOp_K_k(pdfContext, canvas, &pdfContext->fGraphicsState.fNonStroking);
}
static SkPdfResult PdfOp_W(SkPdfContext* pdfContext, SkCanvas* canvas, PdfTokenLooper** looper) {
pdfContext->fGraphicsState.fClipPath = pdfContext->fGraphicsState.fPath;
pdfContext->fGraphicsState.fHasClipPathToApply = true;
return kOK_SkPdfResult;
}
static SkPdfResult PdfOp_W_star(SkPdfContext* pdfContext, SkCanvas* canvas,
PdfTokenLooper** looper) {
pdfContext->fGraphicsState.fClipPath = pdfContext->fGraphicsState.fPath;
pdfContext->fGraphicsState.fClipPath.setFillType(SkPath::kEvenOdd_FillType);
pdfContext->fGraphicsState.fHasClipPathToApply = true;
return kOK_SkPdfResult;
}
static SkPdfResult PdfOp_BX(SkPdfContext* pdfContext, SkCanvas* canvas, PdfTokenLooper** looper) {
*looper = new PdfCompatibilitySectionLooper();
return kOK_SkPdfResult;
}
static SkPdfResult PdfOp_EX(SkPdfContext* pdfContext, SkCanvas* canvas, PdfTokenLooper** looper) {
SkPdfReport(kIgnoreError_SkPdfIssueSeverity, kNullObject_SkPdfIssue,
"EX operator should not be called, it is handled in a looper, "
"unless the file is corrupted, we should assert",
NULL, pdfContext);
return kIgnoreError_SkPdfResult;
}
static SkPdfResult PdfOp_BI(SkPdfContext* pdfContext, SkCanvas* canvas, PdfTokenLooper** looper) {
*looper = new PdfInlineImageLooper();
return kOK_SkPdfResult;
}
static SkPdfResult PdfOp_ID(SkPdfContext* pdfContext, SkCanvas* canvas, PdfTokenLooper** looper) {
SkPdfReport(kIgnoreError_SkPdfIssueSeverity, kNullObject_SkPdfIssue,
"ID operator should not be called, it is habdled in a looper, "
"unless the file is corrupted, we should assert",
NULL, pdfContext);
return kIgnoreError_SkPdfResult;
}
static SkPdfResult PdfOp_EI(SkPdfContext* pdfContext, SkCanvas* canvas, PdfTokenLooper** looper) {
SkPdfReport(kIgnoreError_SkPdfIssueSeverity, kNullObject_SkPdfIssue,
"EI operator should not be called, it is habdled in a looper, "
"unless the file is corrupted, we should assert",
NULL, pdfContext);
return kIgnoreError_SkPdfResult;
}
static SkPdfResult skpdfGraphicsStateApply_ca(SkPdfContext* pdfContext, double ca) {
pdfContext->fGraphicsState.fNonStroking.fOpacity = ca;
return kOK_SkPdfResult;
}
static SkPdfResult skpdfGraphicsStateApply_CA(SkPdfContext* pdfContext, double CA) {
pdfContext->fGraphicsState.fStroking.fOpacity = CA;
return kOK_SkPdfResult;
}
static SkPdfResult skpdfGraphicsStateApplyLW(SkPdfContext* pdfContext, double lineWidth) {
pdfContext->fGraphicsState.fLineWidth = lineWidth;
return kOK_SkPdfResult;
}
static SkPdfResult skpdfGraphicsStateApplyLC(SkPdfContext* pdfContext, int64_t lineCap) {
pdfContext->fGraphicsState.fLineCap = (int)lineCap;
return kOK_SkPdfResult;
}
static SkPdfResult skpdfGraphicsStateApplyLJ(SkPdfContext* pdfContext, int64_t lineJoin) {
pdfContext->fGraphicsState.fLineJoin = (int)lineJoin;
return kOK_SkPdfResult;
}
static SkPdfResult skpdfGraphicsStateApplyML(SkPdfContext* pdfContext, double miterLimit) {
pdfContext->fGraphicsState.fMiterLimit = miterLimit;
return kOK_SkPdfResult;
}
// TODO(edisonn): test all dashing rules, not sure if they work as in skia.
/*
1) [ ] 0 No dash; solid, unbroken lines
2) [3] 0 3 units on, 3 units off, …
3) [2] 1 1 on, 2 off, 2 on, 2 off, …
4) [2 1] 0 2 on, 1 off, 2 on, 1 off, …
5) [3 5] 6 2 off, 3 on, 5 off, 3 on, 5 off, …
6) [2 3] 11 1 on, 3 off, 2 on, 3 off, 2 on, …
*/
static SkPdfResult skpdfGraphicsStateApplyD(SkPdfContext* pdfContext, SkPdfArray* intervals,
SkPdfNativeObject* phase) {
if (intervals == NULL) {
SkPdfReportUnexpectedType(kIgnoreError_SkPdfIssueSeverity, NULL, intervals,
SkPdfNativeObject::_kNumber_PdfObjectType, pdfContext);
return kIgnoreError_SkPdfResult;
}
if (phase == NULL) {
SkPdfReportUnexpectedType(kIgnoreError_SkPdfIssueSeverity, NULL, phase,
SkPdfNativeObject::_kNumber_PdfObjectType, pdfContext);
return kIgnoreError_SkPdfResult;
}
int cnt = intervals->size();
if (cnt >= 256) {
// TODO(edisonn): alloc memory
SkPdfReport(kCodeWarning_SkPdfIssueSeverity, kNYI_SkPdfIssue,
"dash array size unssuported, cnt > 256", intervals, pdfContext);
return kIgnoreError_SkPdfResult;
}
for (int i = 0; i < cnt; i++) {
if (!intervals->objAtAIndex(i) || !intervals->objAtAIndex(i)->isNumber()) {
SkPdfReportUnexpectedType(kIgnoreError_SkPdfIssueSeverity, NULL,
intervals->objAtAIndex(i),
SkPdfNativeObject::_kNumber_PdfObjectType, NULL);
return kIgnoreError_SkPdfResult;
}
}
double total = 0;
for (int i = 0 ; i < cnt; i++) {
pdfContext->fGraphicsState.fDashArray[i] = intervals->objAtAIndex(i)->scalarValue();
total += pdfContext->fGraphicsState.fDashArray[i];
}
if (cnt & 1) {
if (cnt == 1) {
pdfContext->fGraphicsState.fDashArray[1] = pdfContext->fGraphicsState.fDashArray[0];
cnt++;
} else {
// TODO(edisonn): report error/warning
return kNYI_SkPdfResult;
}
}
pdfContext->fGraphicsState.fDashArrayLength = cnt;
pdfContext->fGraphicsState.fDashPhase = phase->scalarValue();
if (pdfContext->fGraphicsState.fDashPhase == 0) {
// other rules, changes?
pdfContext->fGraphicsState.fDashPhase = SkDoubleToScalar(total);
}
return kOK_SkPdfResult;
}
static SkPdfResult skpdfGraphicsStateApplyD(SkPdfContext* pdfContext, SkPdfArray* dash) {
if (!dash || dash->isArray()) {
SkPdfReportUnexpectedType(kIgnoreError_SkPdfIssueSeverity, NULL, dash,
SkPdfNativeObject::kArray_PdfObjectType, pdfContext);
return kIgnoreError_SkPdfResult;
}
if (dash->size() != 2) {
SkPdfReport(kIgnoreError_SkPdfIssueSeverity, kIncostistentSizes_SkPdfIssue,
"hash array must have 2 elements", dash, pdfContext);
return kIgnoreError_SkPdfResult;
}
if (!dash->objAtAIndex(0) || !dash->objAtAIndex(0)->isArray()) {
SkPdfReportUnexpectedType(kIgnoreError_SkPdfIssueSeverity, NULL, dash->objAtAIndex(0),
SkPdfNativeObject::kArray_PdfObjectType, pdfContext);
return kIgnoreError_SkPdfResult;
}
if (!dash->objAtAIndex(1) || !dash->objAtAIndex(1)->isNumber()) {
SkPdfReportUnexpectedType(kIgnoreError_SkPdfIssueSeverity, NULL, dash->objAtAIndex(1),
SkPdfNativeObject::_kNumber_PdfObjectType, pdfContext);
return kIgnoreError_SkPdfResult;
}
return skpdfGraphicsStateApplyD(pdfContext, (SkPdfArray*)dash->objAtAIndex(0),
dash->objAtAIndex(1));
}
static void skpdfGraphicsStateApplyFont(SkPdfContext* pdfContext, SkPdfArray* fontAndSize) {
if (!fontAndSize || !fontAndSize->isArray()) {
SkPdfReportUnexpectedType(kIgnoreError_SkPdfIssueSeverity, NULL, fontAndSize,
SkPdfNativeObject::kArray_PdfObjectType, pdfContext);
return;
}
if (fontAndSize->size() != 2) {
SkPdfReport(kIgnoreError_SkPdfIssueSeverity, kIncostistentSizes_SkPdfIssue,
"font array must have 2 elements", fontAndSize, pdfContext);
return;
}
if (!fontAndSize->objAtAIndex(0) || !fontAndSize->objAtAIndex(0)->isName()) {
SkPdfReportUnexpectedType(kIgnoreError_SkPdfIssueSeverity, NULL,
fontAndSize->objAtAIndex(0),
SkPdfNativeObject::kName_PdfObjectType, pdfContext);
return;
}
if (!fontAndSize->objAtAIndex(1) || !fontAndSize->objAtAIndex(1)->isNumber()) {
SkPdfReportUnexpectedType(kIgnoreError_SkPdfIssueSeverity, NULL,
fontAndSize->objAtAIndex(0),
SkPdfNativeObject::_kNumber_PdfObjectType, pdfContext);
return;
}
skpdfGraphicsStateApplyFontCore(pdfContext, fontAndSize->objAtAIndex(0),
fontAndSize->objAtAIndex(1)->numberValue());
}
//lineWidth w Set the line width in the graphics state (see “Line Width” on page 152).
static SkPdfResult PdfOp_w(SkPdfContext* pdfContext, SkCanvas* canvas, PdfTokenLooper** looper) {
EXPECT_OPERANDS("w", pdfContext, 1);
POP_NUMBER(pdfContext, lw);
CHECK_PARAMETERS();
return skpdfGraphicsStateApplyLW(pdfContext, lw);
}
//lineCap J Set the line cap style in the graphics state (see “Line Cap Style” on page 153).
static SkPdfResult PdfOp_J(SkPdfContext* pdfContext, SkCanvas* canvas, PdfTokenLooper** looper) {
// TODO(edisonn): round/ceil to int?
EXPECT_OPERANDS("J", pdfContext, 1);
POP_NUMBER(pdfContext, lc);
CHECK_PARAMETERS();
return skpdfGraphicsStateApplyLC(pdfContext, (int)lc);
}
//lineJoin j Set the line join style in the graphics state (see “Line Join Style” on page 153).
static SkPdfResult PdfOp_j(SkPdfContext* pdfContext, SkCanvas* canvas, PdfTokenLooper** looper) {
// TODO(edisonn): round/ceil to int?
EXPECT_OPERANDS("j", pdfContext, 1);
POP_NUMBER(pdfContext, lj);
CHECK_PARAMETERS();
return skpdfGraphicsStateApplyLJ(pdfContext, (int)lj);
}
//miterLimit M Set the miter limit in the graphics state (see “Miter Limit” on page 153).
static SkPdfResult PdfOp_M(SkPdfContext* pdfContext, SkCanvas* canvas, PdfTokenLooper** looper) {
EXPECT_OPERANDS("M", pdfContext, 1);
POP_NUMBER(pdfContext, ml);
CHECK_PARAMETERS();
return skpdfGraphicsStateApplyML(pdfContext, ml);
}
//dashArray dashPhase d Set the line dash pattern in the graphics state (see “Line Dash Pattern” on
//page 155).
static SkPdfResult PdfOp_d(SkPdfContext* pdfContext, SkCanvas* canvas, PdfTokenLooper** looper) {
EXPECT_OPERANDS("d", pdfContext, 2);
POP_OBJ(pdfContext, phase);
POP_ARRAY(pdfContext, array);
CHECK_PARAMETERS();
return skpdfGraphicsStateApplyD(pdfContext, array, phase);
}
//intent ri (PDF 1.1) Set the color rendering intent in the graphics state (see “Rendering Intents”
// on page 197).
static SkPdfResult PdfOp_ri(SkPdfContext* pdfContext, SkCanvas* canvas, PdfTokenLooper** looper) {
pdfContext->fObjectStack.pop();
SkPdfReport(kCodeWarning_SkPdfIssueSeverity, kNYI_SkPdfIssue, "render intent NYI", NULL,
pdfContext);
return kNYI_SkPdfResult;
}
//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 SkPdfResult PdfOp_i(SkPdfContext* pdfContext, SkCanvas* canvas, PdfTokenLooper** looper) {
EXPECT_OPERANDS("i", pdfContext, 1);
POP_NUMBER(pdfContext, flatness);
CHECK_PARAMETERS();
if (flatness < 0 || flatness > 100) {
SkPdfReport(kIgnoreError_SkPdfIssueSeverity, kOutOfRange_SkPdfIssue,
"flatness must be a real in [0, 100] range", flatness_obj, pdfContext);
return kIgnoreError_SkPdfResult;
}
return kNYI_SkPdfResult;
}
SkTDict<SkXfermode::Mode> gPdfBlendModes(20);
class InitBlendModes {
public:
InitBlendModes() {
// TODO(edisonn): use the python code generator?
// TABLE 7.2 Standard separable blend modes
gPdfBlendModes.set("Normal", SkXfermode::kSrc_Mode);
gPdfBlendModes.set("Multiply", SkXfermode::kMultiply_Mode);
gPdfBlendModes.set("Screen", SkXfermode::kScreen_Mode);
gPdfBlendModes.set("Overlay", SkXfermode::kOverlay_Mode);
gPdfBlendModes.set("Darken", SkXfermode::kDarken_Mode);
gPdfBlendModes.set("Lighten", SkXfermode::kLighten_Mode);
gPdfBlendModes.set("ColorDodge", SkXfermode::kColorDodge_Mode);
gPdfBlendModes.set("ColorBurn", SkXfermode::kColorBurn_Mode);
gPdfBlendModes.set("HardLight", SkXfermode::kHardLight_Mode);
gPdfBlendModes.set("SoftLight", SkXfermode::kSoftLight_Mode);
gPdfBlendModes.set("Difference", SkXfermode::kDifference_Mode);
gPdfBlendModes.set("Exclusion", SkXfermode::kExclusion_Mode);
// TABLE 7.3 Standard nonseparable blend modes
gPdfBlendModes.set("Hue", SkXfermode::kHue_Mode);
gPdfBlendModes.set("Saturation", SkXfermode::kSaturation_Mode);
gPdfBlendModes.set("Color", SkXfermode::kColor_Mode);
gPdfBlendModes.set("Luminosity", SkXfermode::kLuminosity_Mode);
}
};
InitBlendModes _gDummyInniter;
static SkXfermode::Mode xferModeFromBlendMode(const char* blendMode, size_t len) {
SkXfermode::Mode mode = (SkXfermode::Mode)(SkXfermode::kLastMode + 1);
if (gPdfBlendModes.find(blendMode, len, &mode)) {
return mode;
}
return (SkXfermode::Mode)(SkXfermode::kLastMode + 1);
}
static void skpdfGraphicsStateApplyBM_name(SkPdfContext* pdfContext, const SkString& blendMode) {
SkXfermode::Mode mode = xferModeFromBlendMode(blendMode.c_str(), blendMode.size());
if (mode <= SkXfermode::kLastMode) {
pdfContext->fGraphicsState.fBlendModesLength = 1;
pdfContext->fGraphicsState.fBlendModes[0] = mode;
} else {
SkPdfReport(kIgnoreError_SkPdfIssueSeverity, kUnknownBlendMode_SkPdfIssue,
blendMode.c_str(), NULL, pdfContext);
}
}
static void skpdfGraphicsStateApplyBM_array(SkPdfContext* pdfContext, SkPdfArray* blendModes) {
if (!blendModes || !blendModes->isArray()) {
SkPdfReportUnexpectedType(kIgnoreError_SkPdfIssueSeverity, NULL, blendModes,
SkPdfNativeObject::kArray_PdfObjectType, pdfContext);
return;
}
if (blendModes->size() == 0 || blendModes->size() > 256) {
SkPdfReport(kIgnoreError_SkPdfIssueSeverity, kIncostistentSizes_SkPdfIssue,
"length of blendmodes, 0, is an erro, 256+, is NYI", blendModes, pdfContext);
return;
}
SkXfermode::Mode modes[256];
int cnt = blendModes->size();
for (int i = 0; i < cnt; i++) {
SkPdfNativeObject* name = blendModes->objAtAIndex(i);
if (!name || !name->isName()) {
SkPdfReportUnexpectedType(kIgnoreError_SkPdfIssueSeverity, NULL, name,
SkPdfNativeObject::kName_PdfObjectType, pdfContext);
return;
}
SkXfermode::Mode mode = xferModeFromBlendMode(name->c_str(), name->lenstr());
if (mode > SkXfermode::kLastMode) {
SkPdfReport(kIgnoreError_SkPdfIssueSeverity, kUnknownBlendMode_SkPdfIssue, NULL, name,
pdfContext);
return;
}
}
pdfContext->fGraphicsState.fBlendModesLength = cnt;
for (int i = 0; i < cnt; i++) {
pdfContext->fGraphicsState.fBlendModes[i] = modes[i];
}
}
static void skpdfGraphicsStateApplySMask_dict(SkPdfContext* pdfContext, SkPdfDictionary* sMask) {
if (!sMask || !sMask->isName()) {
SkPdfReportUnexpectedType(kIgnoreError_SkPdfIssueSeverity, NULL, sMask,
SkPdfNativeObject::kArray_PdfObjectType, pdfContext);
return;
}
if (pdfContext->fPdfDoc->mapper()->mapSoftMaskDictionary(sMask)) {
pdfContext->fGraphicsState.fSoftMaskDictionary = (SkPdfSoftMaskDictionary*)sMask;
} else if (pdfContext->fPdfDoc->mapper()->mapSoftMaskImageDictionary(sMask)) {
SkPdfSoftMaskImageDictionary* smid = (SkPdfSoftMaskImageDictionary*)sMask;
pdfContext->fGraphicsState.fSMask = getImageFromObject(pdfContext, smid, true);
} else {
SkPdfReportUnexpectedType(kIgnoreError_SkPdfIssueSeverity,
"Dictionary must be SoftMask, or SoftMaskImage",
sMask, SkPdfNativeObject::kDictionary_PdfObjectType, pdfContext);
}
}
static void skpdfGraphicsStateApplySMask_name(SkPdfContext* pdfContext, const SkString& sMask) {
if (sMask.equals("None")) {
pdfContext->fGraphicsState.fSoftMaskDictionary = NULL;
pdfContext->fGraphicsState.fSMask = NULL;
return;
}
SkPdfDictionary* extGStateDictionary
= pdfContext->fGraphicsState.fResources->ExtGState(pdfContext->fPdfDoc);
if (extGStateDictionary == NULL) {
SkPdfReport(kIgnoreError_SkPdfIssueSeverity, kMissingExtGState_SkPdfIssue, NULL,
pdfContext->fGraphicsState.fResources, pdfContext);
return;
}
SkPdfNativeObject* obj
= pdfContext->fPdfDoc->resolveReference(extGStateDictionary->get(sMask.c_str()));
if (!obj || !obj->isDictionary()) {
SkPdfReportUnexpectedType(kIgnoreError_SkPdfIssueSeverity, NULL, obj,
SkPdfNativeObject::kDictionary_PdfObjectType, pdfContext);
return;
}
pdfContext->fGraphicsState.fSoftMaskDictionary = NULL;
pdfContext->fGraphicsState.fSMask = NULL;
skpdfGraphicsStateApplySMask_dict(pdfContext, obj->asDictionary());
}
static void skpdfGraphicsStateApplyAIS(SkPdfContext* pdfContext, bool alphaSource) {
pdfContext->fGraphicsState.fAlphaSource = alphaSource;
}
//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 SkPdfResult PdfOp_gs(SkPdfContext* pdfContext, SkCanvas* canvas, PdfTokenLooper** looper) {
EXPECT_OPERANDS("gs", pdfContext, 1);
POP_NAME(pdfContext, name);
CHECK_PARAMETERS();
SkPdfDictionary* extGStateDictionary
= pdfContext->fGraphicsState.fResources->ExtGState(pdfContext->fPdfDoc);
if (extGStateDictionary == NULL) {
SkPdfReport(kIgnoreError_SkPdfIssueSeverity, kMissingExtGState_SkPdfIssue, NULL,
pdfContext->fGraphicsState.fResources, pdfContext);
return kIgnoreError_SkPdfResult;
}
SkPdfNativeObject* value
= pdfContext->fPdfDoc->resolveReference(extGStateDictionary->get(name));
if (kNone_SkPdfNativeObjectType ==
pdfContext->fPdfDoc->mapper()->mapGraphicsStateDictionary(value)) {
return kIgnoreError_SkPdfResult;
}
SkPdfGraphicsStateDictionary* gs = (SkPdfGraphicsStateDictionary*)value;
if (gs == NULL) {
SkPdfReportUnexpectedType(kIgnoreError_SkPdfIssueSeverity, NULL,
gs, SkPdfNativeObject::kDictionary_PdfObjectType, pdfContext);
return kIgnoreError_SkPdfResult;
}
if (gs->has_LW()) {
skpdfGraphicsStateApplyLW(pdfContext, gs->LW(pdfContext->fPdfDoc));
}
if (gs->has_LC()) {
skpdfGraphicsStateApplyLC(pdfContext, gs->LC(pdfContext->fPdfDoc));
}
if (gs->has_LJ()) {
skpdfGraphicsStateApplyLJ(pdfContext, gs->LJ(pdfContext->fPdfDoc));
}
if (gs->has_ML()) {
skpdfGraphicsStateApplyML(pdfContext, gs->ML(pdfContext->fPdfDoc));
}
if (gs->has_D()) {
skpdfGraphicsStateApplyD(pdfContext, gs->D(pdfContext->fPdfDoc));
}
if (gs->has_Font()) {
skpdfGraphicsStateApplyFont(pdfContext, gs->Font(pdfContext->fPdfDoc));
}
if (gs->has_BM()) {
if (gs->isBMAName(pdfContext->fPdfDoc)) {
skpdfGraphicsStateApplyBM_name(pdfContext, gs->getBMAsName(pdfContext->fPdfDoc));
} else if (gs->isBMAArray(pdfContext->fPdfDoc)) {
skpdfGraphicsStateApplyBM_array(pdfContext, gs->getBMAsArray(pdfContext->fPdfDoc));
} else {
SkPdfReportUnexpectedType(kIgnoreError_SkPdfIssueSeverity, "wrong type", gs->get("BM"),
SkPdfNativeObject::kArray_PdfObjectType |
SkPdfNativeObject::kName_PdfObjectType, pdfContext);
}
}
if (gs->has_SMask()) {
if (gs->isSMaskAName(pdfContext->fPdfDoc)) {
skpdfGraphicsStateApplySMask_name(pdfContext, gs->getSMaskAsName(pdfContext->fPdfDoc));
} else if (gs->isSMaskADictionary(pdfContext->fPdfDoc)) {
skpdfGraphicsStateApplySMask_dict(pdfContext,
gs->getSMaskAsDictionary(pdfContext->fPdfDoc));
} else {
SkPdfReportUnexpectedType(kIgnoreError_SkPdfIssueSeverity,
"wrong type",
gs->get("BM"),
SkPdfNativeObject::kDictionary_PdfObjectType |
SkPdfNativeObject::kName_PdfObjectType,
pdfContext);
}
}
if (gs->has_ca()) {
skpdfGraphicsStateApply_ca(pdfContext, gs->ca(pdfContext->fPdfDoc));
}
if (gs->has_CA()) {
skpdfGraphicsStateApply_CA(pdfContext, gs->CA(pdfContext->fPdfDoc));
}
if (gs->has_AIS()) {
skpdfGraphicsStateApplyAIS(pdfContext, gs->AIS(pdfContext->fPdfDoc));
}
// TODO(edisonn): make sure we loaded all those properties in graphic state.
return kOK_SkPdfResult;
}
//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.
SkPdfResult PdfOp_Tc(SkPdfContext* pdfContext, SkCanvas* canvas, PdfTokenLooper** looper) {
EXPECT_OPERANDS("Tc", pdfContext, 1);
POP_NUMBER(pdfContext, charSpace);
CHECK_PARAMETERS();
pdfContext->fGraphicsState.fCharSpace = charSpace;
return kOK_SkPdfResult;
}
//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.
SkPdfResult PdfOp_Tw(SkPdfContext* pdfContext, SkCanvas* canvas, PdfTokenLooper** looper) {
EXPECT_OPERANDS("Tw", pdfContext, 1);
POP_NUMBER(pdfContext, wordSpace);
CHECK_PARAMETERS();
pdfContext->fGraphicsState.fWordSpace = wordSpace;
return kOK_SkPdfResult;
}
//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 SkPdfResult PdfOp_Tz(SkPdfContext* pdfContext, SkCanvas* canvas, PdfTokenLooper** looper) {
EXPECT_OPERANDS("Tz", pdfContext, 1);
POP_NUMBER(pdfContext, scale);
CHECK_PARAMETERS();
if (scale < 0) {
SkPdfReport(kIgnoreError_SkPdfIssueSeverity, kOutOfRange_SkPdfIssue,
"scale must a positive real number", scale_obj, pdfContext);
return kError_SkPdfResult;
}
return kNYI_SkPdfResult;
}
//render Tr Set the text rendering mode, T
//mode, to render, which is an integer. Initial value: 0.
static SkPdfResult PdfOp_Tr(SkPdfContext* pdfContext, SkCanvas* canvas, PdfTokenLooper** looper) {
EXPECT_OPERANDS("Tr", pdfContext, 1);
POP_INTEGER(pdfContext, mode);
CHECK_PARAMETERS();
if (mode < 0) { // TODO(edisonn): function/enums with supported modes
SkPdfReport(kIgnoreError_SkPdfIssueSeverity, kOutOfRange_SkPdfIssue,
"mode must a positive integer or 0", mode_obj, pdfContext);
return kError_SkPdfResult;
}
return kNYI_SkPdfResult;
}
//rise Ts Set the text rise, Trise, to rise, which is a number expressed in unscaled text space
//units. Initial value: 0.
static SkPdfResult PdfOp_Ts(SkPdfContext* pdfContext, SkCanvas* canvas, PdfTokenLooper** looper) {
EXPECT_OPERANDS("Ts", pdfContext, 1);
POP_NUMBER(pdfContext, rise);
CHECK_PARAMETERS();
if (rise < 0) {
SkPdfReport(kIgnoreError_SkPdfIssueSeverity, kOutOfRange_SkPdfIssue,
"rise must a positive real number", rise_obj, pdfContext);
return kNYI_SkPdfResult;
}
return kNYI_SkPdfResult;
}
//wx wy d0
static SkPdfResult PdfOp_d0(SkPdfContext* pdfContext, SkCanvas* canvas, PdfTokenLooper** looper) {
EXPECT_OPERANDS("d0", pdfContext, 2);
POP_NUMBER(pdfContext, wy);
POP_NUMBER(pdfContext, wx);
CHECK_PARAMETERS();
if (wx < 0) {
SkPdfReport(kIgnoreError_SkPdfIssueSeverity, kOutOfRange_SkPdfIssue,
"wx must a positive real number", wx_obj, pdfContext);
return kError_SkPdfResult;
}
if (wy < 0) {
SkPdfReport(kIgnoreError_SkPdfIssueSeverity, kOutOfRange_SkPdfIssue,
"wy must a positive real number", wy_obj, pdfContext);
return kError_SkPdfResult;
}
return kNYI_SkPdfResult;
}
//wx wy llx lly urx ury d1
static SkPdfResult PdfOp_d1(SkPdfContext* pdfContext, SkCanvas* canvas, PdfTokenLooper** looper) {
EXPECT_OPERANDS("d1", pdfContext, 6);
POP_NUMBER(pdfContext, ury);
POP_NUMBER(pdfContext, urx);
POP_NUMBER(pdfContext, lly);
POP_NUMBER(pdfContext, llx);
POP_NUMBER(pdfContext, wy);
POP_NUMBER(pdfContext, wx);
CHECK_PARAMETERS();
// TODO(edisonn): really silly quick way to remove warning
if (wx + wy + llx + lly + urx + ury) {
return kNYI_SkPdfResult;
}
return kNYI_SkPdfResult;
}
//name sh
static SkPdfResult PdfOp_sh(SkPdfContext* pdfContext, SkCanvas* canvas, PdfTokenLooper** looper) {
EXPECT_OPERANDS("sh", pdfContext, 1);
POP_NAME(pdfContext, name);
CHECK_PARAMETERS();
if (name == NULL) {
SkPdfReportUnexpectedType(kIgnoreError_SkPdfIssueSeverity, NULL, name,
SkPdfNativeObject::kName_PdfObjectType, pdfContext);
return kError_SkPdfResult;
}
return kNYI_SkPdfResult;
}
//name Do
static SkPdfResult PdfOp_Do(SkPdfContext* pdfContext, SkCanvas* canvas, PdfTokenLooper** looper) {
EXPECT_OPERANDS("Do", pdfContext, 1);
POP_NAME(pdfContext, name);
CHECK_PARAMETERS();
SkPdfDictionary* xObject = pdfContext->fGraphicsState.fResources->XObject(pdfContext->fPdfDoc);
if (xObject == NULL) {
SkPdfReport(kIgnoreError_SkPdfIssueSeverity, kMissingXObject_SkPdfIssue, NULL,
pdfContext->fGraphicsState.fResources, pdfContext);
return kIgnoreError_SkPdfResult;
}
SkPdfNativeObject* value = xObject->get(name);
value = pdfContext->fPdfDoc->resolveReference(value);
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 SkPdfResult PdfOp_MP(SkPdfContext* pdfContext, SkCanvas* canvas, PdfTokenLooper** looper) {
EXPECT_OPERANDS("MP", pdfContext, 1);
POP_OBJ(pdfContext, tag);
CHECK_PARAMETERS();
if (tag == NULL) {
SkPdfReportUnexpectedType(kIgnoreError_SkPdfIssueSeverity, NULL, tag,
SkPdfNativeObject::_kObject_PdfObjectType, pdfContext);
return kNYI_SkPdfResult;
}
SkPdfReport(kCodeWarning_SkPdfIssueSeverity, kNYI_SkPdfIssue, "MP NYI", NULL, NULL);
return kNYI_SkPdfResult;
}
//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 SkPdfResult PdfOp_DP(SkPdfContext* pdfContext, SkCanvas* canvas, PdfTokenLooper** looper) {
EXPECT_OPERANDS("DP", pdfContext, 2);
POP_OBJ(pdfContext, properties);
POP_OBJ(pdfContext, tag);
CHECK_PARAMETERS();
if (tag == NULL) {
SkPdfReportUnexpectedType(kIgnoreError_SkPdfIssueSeverity, NULL, tag,
SkPdfNativeObject::_kObject_PdfObjectType, pdfContext);
return kNYI_SkPdfResult;
}
if (properties == NULL) {
SkPdfReportUnexpectedType(kIgnoreError_SkPdfIssueSeverity, NULL, properties,
SkPdfNativeObject::_kObject_PdfObjectType, pdfContext);
return kNYI_SkPdfResult;
}
SkPdfReport(kCodeWarning_SkPdfIssueSeverity, kNYI_SkPdfIssue, "DP NYI", NULL, NULL);
return kNYI_SkPdfResult;
}
//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 SkPdfResult PdfOp_BMC(SkPdfContext* pdfContext, SkCanvas* canvas, PdfTokenLooper** looper) {
EXPECT_OPERANDS("BMC", pdfContext, 1);
POP_OBJ(pdfContext, tag);
CHECK_PARAMETERS();
if (tag == NULL) {
SkPdfReportUnexpectedType(kIgnoreError_SkPdfIssueSeverity, NULL, tag,
SkPdfNativeObject::_kObject_PdfObjectType, pdfContext);
return kNYI_SkPdfResult;
}
SkPdfReport(kCodeWarning_SkPdfIssueSeverity, kNYI_SkPdfIssue, "BMC NYI", NULL, NULL);
return kNYI_SkPdfResult;
}
//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 SkPdfResult PdfOp_BDC(SkPdfContext* pdfContext, SkCanvas* canvas, PdfTokenLooper** looper) {
EXPECT_OPERANDS("BDC", pdfContext, 2);
POP_OBJ(pdfContext, properties);
POP_OBJ(pdfContext, tag);
CHECK_PARAMETERS();
if (tag == NULL) {
SkPdfReportUnexpectedType(kIgnoreError_SkPdfIssueSeverity, NULL, tag,
SkPdfNativeObject::_kObject_PdfObjectType, pdfContext);
return kNYI_SkPdfResult;
}
if (properties == NULL) {
SkPdfReportUnexpectedType(kIgnoreError_SkPdfIssueSeverity, NULL, properties,
SkPdfNativeObject::_kObject_PdfObjectType, pdfContext);
return kNYI_SkPdfResult;
}
SkPdfReport(kCodeWarning_SkPdfIssueSeverity, kNYI_SkPdfIssue, "BDC NYI", NULL, NULL);
return kNYI_SkPdfResult;
}
//— EMC End a marked-content sequence begun by a BMC or BDC operator.
static SkPdfResult PdfOp_EMC(SkPdfContext* pdfContext, SkCanvas* canvas, PdfTokenLooper** looper) {
SkPdfReport(kCodeWarning_SkPdfIssueSeverity, kNYI_SkPdfIssue, "EMC NYI", NULL, NULL);
return kNYI_SkPdfResult;
}
static void initPdfOperatorRenderes() {
static bool gInitialized = false;
if (gInitialized) {
return;
}
gPdfOps.set("q", PdfOp_q);
gPdfOps.set("Q", PdfOp_Q);
gPdfOps.set("cm", PdfOp_cm);
gPdfOps.set("TD", PdfOp_TD);
gPdfOps.set("Td", PdfOp_Td);
gPdfOps.set("Tm", PdfOp_Tm);
gPdfOps.set("T*", PdfOp_T_star);
gPdfOps.set("m", PdfOp_m);
gPdfOps.set("l", PdfOp_l);
gPdfOps.set("c", PdfOp_c);
gPdfOps.set("v", PdfOp_v);
gPdfOps.set("y", PdfOp_y);
gPdfOps.set("h", PdfOp_h);
gPdfOps.set("re", PdfOp_re);
gPdfOps.set("S", PdfOp_S);
gPdfOps.set("s", PdfOp_s);
gPdfOps.set("f", PdfOp_f);
gPdfOps.set("F", PdfOp_F);
gPdfOps.set("f*", PdfOp_f_star);
gPdfOps.set("B", PdfOp_B);
gPdfOps.set("B*", PdfOp_B_star);
gPdfOps.set("b", PdfOp_b);
gPdfOps.set("b*", PdfOp_b_star);
gPdfOps.set("n", PdfOp_n);
gPdfOps.set("BT", PdfOp_BT);
gPdfOps.set("ET", PdfOp_ET);
gPdfOps.set("Tj", PdfOp_Tj);
gPdfOps.set("'", PdfOp_quote);
gPdfOps.set("\"", PdfOp_doublequote);
gPdfOps.set("TJ", PdfOp_TJ);
gPdfOps.set("CS", PdfOp_CS);
gPdfOps.set("cs", PdfOp_cs);
gPdfOps.set("SC", PdfOp_SC);
gPdfOps.set("SCN", PdfOp_SCN);
gPdfOps.set("sc", PdfOp_sc);
gPdfOps.set("scn", PdfOp_scn);
gPdfOps.set("G", PdfOp_G);
gPdfOps.set("g", PdfOp_g);
gPdfOps.set("RG", PdfOp_RG);
gPdfOps.set("rg", PdfOp_rg);
gPdfOps.set("K", PdfOp_K);
gPdfOps.set("k", PdfOp_k);
gPdfOps.set("W", PdfOp_W);
gPdfOps.set("W*", PdfOp_W_star);
gPdfOps.set("BX", PdfOp_BX);
gPdfOps.set("EX", PdfOp_EX);
gPdfOps.set("BI", PdfOp_BI);
gPdfOps.set("ID", PdfOp_ID);
gPdfOps.set("EI", PdfOp_EI);
gPdfOps.set("w", PdfOp_w);
gPdfOps.set("J", PdfOp_J);
gPdfOps.set("j", PdfOp_j);
gPdfOps.set("M", PdfOp_M);
gPdfOps.set("d", PdfOp_d);
gPdfOps.set("ri", PdfOp_ri);
gPdfOps.set("i", PdfOp_i);
gPdfOps.set("gs", PdfOp_gs);
gPdfOps.set("Tc", PdfOp_Tc);
gPdfOps.set("Tw", PdfOp_Tw);
gPdfOps.set("Tz", PdfOp_Tz);
gPdfOps.set("TL", PdfOp_TL);
gPdfOps.set("Tf", PdfOp_Tf);
gPdfOps.set("Tr", PdfOp_Tr);
gPdfOps.set("Ts", PdfOp_Ts);
gPdfOps.set("d0", PdfOp_d0);
gPdfOps.set("d1", PdfOp_d1);
gPdfOps.set("sh", PdfOp_sh);
gPdfOps.set("Do", PdfOp_Do);
gPdfOps.set("MP", PdfOp_MP);
gPdfOps.set("DP", PdfOp_DP);
gPdfOps.set("BMC", PdfOp_BMC);
gPdfOps.set("BDC", PdfOp_BDC);
gPdfOps.set("EMC", PdfOp_EMC);
gInitialized = true;
}
class InitPdfOps {
public:
InitPdfOps() {
initPdfOperatorRenderes();
}
};
InitPdfOps gInitPdfOps;
void reportPdfRenderStats() {
for (int i = 0 ; i < kCount_SkPdfResult; i++) {
SkTDict<int>::Iter iter(gRenderStats[i]);
const char* key;
int value = 0;
while ((key = iter.next(&value)) != NULL) {
printf("%s: %s -> count %i\n", gRenderStatsNames[i], key, value);
}
}
}
SkPdfResult PdfMainLooper::consumeToken(PdfToken& token) {
if (token.fType == kKeyword_TokenType && token.fKeywordLength < 256)
{
PdfOperatorRenderer pdfOperatorRenderer = NULL;
if (gPdfOps.find(token.fKeyword, token.fKeywordLength, &pdfOperatorRenderer) &&
pdfOperatorRenderer) {
PdfTokenLooper* childLooper = NULL;
// Main work is done by pdfOperatorRenderer(...)
SkPdfResult result = pdfOperatorRenderer(fPdfContext, fCanvas, &childLooper);
int cnt = 0;
gRenderStats[result].find(token.fKeyword, token.fKeywordLength, &cnt);
gRenderStats[result].set(token.fKeyword, token.fKeywordLength, cnt + 1);
if (childLooper) {
childLooper->setUp(this);
childLooper->loop();
delete childLooper;
}
} else {
int cnt = 0;
gRenderStats[kUnsupported_SkPdfResult].find(token.fKeyword,
token.fKeywordLength,
&cnt);
gRenderStats[kUnsupported_SkPdfResult].set(token.fKeyword,
token.fKeywordLength,
cnt + 1);
}
}
else if (token.fType == kObject_TokenType)
{
fPdfContext->fObjectStack.push( token.fObject );
}
else {
// TODO(edisonn): store the keyword as a object, so we can track the location in file,
// and report where the error was triggered
SkPdfReport(kCodeWarning_SkPdfIssueSeverity, kNYI_SkPdfIssue, token.fKeyword, NULL,
fPdfContext);
return kIgnoreError_SkPdfResult;
}
return kOK_SkPdfResult;
}
void PdfMainLooper::loop() {
PdfToken token;
while (readToken(fTokenizer, &token)) {
consumeToken(token);
}
}
SkPdfResult PdfInlineImageLooper::consumeToken(PdfToken& token) {
SkASSERT(false);
return kIgnoreError_SkPdfResult;
}
void PdfInlineImageLooper::loop() {
doXObject_Image(fPdfContext, fCanvas, fTokenizer->readInlineImage());
}
SkPdfResult PdfInlineImageLooper::done() {
return kNYI_SkPdfResult;
}
SkPdfResult PdfCompatibilitySectionLooper::consumeToken(PdfToken& token) {
return fParent->consumeToken(token);
}
void PdfCompatibilitySectionLooper::loop() {
PdfOp_q(fPdfContext, fCanvas, NULL);
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);
}
}
PdfOp_Q(fPdfContext, fCanvas, NULL);
}
// TODO(edisonn): for debugging - remove or put it in a #ifdef
SkPdfContext* gPdfContext = NULL;
bool SkPdfRenderer::renderPage(int page, SkCanvas* canvas, const SkRect& dst) const {
if (!fPdfDoc) {
return false;
}
if (page < 0 || page >= pages()) {
return false;
}
SkPdfContext pdfContext(fPdfDoc);
pdfContext.fOriginalMatrix = SkMatrix::I();
pdfContext.fGraphicsState.fResources = fPdfDoc->pageResources(page);
gPdfContext = &pdfContext;
SkScalar z = SkIntToScalar(0);
SkScalar w = dst.width();
SkScalar h = dst.height();
if (SkScalarTruncToInt(w) <= 0 || SkScalarTruncToInt(h) <= 0) {
return true;
}
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)};
#ifdef PDF_DEBUG_3X
// Use larger image to make sure we do not draw anything outside of page
// could be used in tests.
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
SkAssertResult(pdfContext.fOriginalMatrix.setPolyToPoly(pdfSpace, skiaSpace, 4));
SkTraceMatrix(pdfContext.fOriginalMatrix, "Original matrix");
pdfContext.fOriginalMatrix.postConcat(canvas->getTotalMatrix());
pdfContext.fGraphicsState.fCTM = pdfContext.fOriginalMatrix;
pdfContext.fGraphicsState.fContentStreamMatrix = pdfContext.fOriginalMatrix;
pdfContext.fGraphicsState.fMatrixTm = pdfContext.fGraphicsState.fCTM;
pdfContext.fGraphicsState.fMatrixTlm = pdfContext.fGraphicsState.fCTM;
#ifndef PDF_DEBUG_NO_PAGE_CLIPING
canvas->clipRect(dst, SkRegion::kIntersect_Op, true);
#endif
canvas->concat(pdfContext.fOriginalMatrix);
doPage(&pdfContext, canvas, fPdfDoc->page(page));
// TODO(edisonn:) erase with white before draw? Right now the caller is responsible.
// SkPaint paint;
// paint.setColor(SK_ColorWHITE);
// canvas->drawRect(rect, paint);
canvas->flush();
return true;
}
bool SkPdfRenderer::load(const SkString inputFileName) {
unload();
fPdfDoc = new SkPdfNativeDoc(inputFileName.c_str());
if (fPdfDoc->pages() == 0) {
delete fPdfDoc;
fPdfDoc = NULL;
}
return fPdfDoc != NULL;
}
bool SkPdfRenderer::load(SkStream* stream) {
unload();
// TODO(edisonn): create static function that could return NULL if there are errors
fPdfDoc = new SkPdfNativeDoc(stream);
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;
}
bool SkPDFNativeRenderToBitmap(SkStream* stream,
SkBitmap* output,
int page,
SkPdfContent content,
double dpi) {
SkASSERT(page >= 0);
SkPdfRenderer renderer;
renderer.load(stream);
if (!renderer.loaded() || page >= renderer.pages() || page < 0) {
return false;
}
SkRect rect = renderer.MediaBox(page < 0 ? 0 :page);
SkScalar width = SkScalarMul(rect.width(), SkDoubleToScalar(sqrt(dpi / 72.0)));
SkScalar height = SkScalarMul(rect.height(), SkDoubleToScalar(sqrt(dpi / 72.0)));
rect = SkRect::MakeWH(width, height);
setup_bitmap(output, (int)SkScalarToDouble(width), (int)SkScalarToDouble(height));
SkAutoTUnref<SkBaseDevice> device(SkNEW_ARGS(SkBitmapDevice, (*output)));
SkCanvas canvas(device);
return renderer.renderPage(page, &canvas, rect);
}