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/*
* Copyright 2013 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#ifndef SkPdfUtils_DEFINED
#define SkPdfUtils_DEFINED
#include "SkMatrix.h"
#include "SkRect.h"
#include "SkPdfConfig.h"
#include "SkString.h"
class SkPdfArray;
class SkPdfContext;
class SkCanvas;
class SkPdfNativeObject;
// TODO(edisonn): temporary code, to report how much of the PDF we actually think we rendered.
enum SkPdfResult {
kOK_SkPdfResult,
kPartial_SkPdfResult,
kNYI_SkPdfResult,
kIgnoreError_SkPdfResult,
kError_SkPdfResult,
kUnsupported_SkPdfResult,
kCount_SkPdfResult
};
// In order to operate fast, when we parse the pdf, we try not to allocate many new strings,
// and if possible we refer the string in the pdf stream.
struct NotOwnedString {
const unsigned char* fBuffer;
// TODO(edisonn): clean up, the last two bytes are used to signal if compression is used
size_t fBytes;
static void init(NotOwnedString* str) {
str->fBuffer = NULL;
str->fBytes = 0;
}
static void init(NotOwnedString* str, const char* sz) {
str->fBuffer = (const unsigned char*)sz;
str->fBytes = strlen(sz);
}
bool equals(const char* sz) {
return strncmp((const char*)fBuffer, sz, fBytes) == 0 && fBytes == strlen(sz);
}
};
SkMatrix SkMatrixFromPdfMatrix(double array[6]);
// TODO(edisonn): hack to make code generation simpler. Alternatively we can update the
// generate_code.py not to rely on != operator
bool operator !=(const SkString& first, const char* second);
SkMatrix SkMatrixFromPdfArray(SkPdfArray* pdfArray);
SkPdfResult doType3Char(SkPdfContext* pdfContext, SkCanvas* canvas, const SkPdfNativeObject* skobj,
SkRect bBox, SkMatrix matrix, double textSize);
////////////////////////////////////////////////////////////////////////////////////////////////////
//
// TRACE functions
//
#ifdef PDF_TRACE
void SkTraceMatrix(const SkMatrix& matrix, const char* sz);
void SkTraceRect(const SkRect& rect, const char* sz);
#else
#define SkTraceMatrix(a,b)
#define SkTraceRect(a,b)
#endif
#ifdef PDF_TRACE_TOKENIZER
static void TRACE_COMMENT(char ch) {
printf("%c", ch);
}
static void TRACE_TK(char ch) {
printf("%c", ch);
}
static void TRACE_NAME(const unsigned char* start, const unsigned char* end) {
while (start < end) {
printf("%c", *start);
start++;
}
printf("\n");
}
static void TRACE_STRING(const unsigned char* start, const unsigned char* end) {
while (start < end) {
printf("%c", *start);
start++;
}
printf("\n");
}
static void TRACE_HEXSTRING(const unsigned char* start, const unsigned char* end) {
while (start < end) {
printf("%c", *start);
start++;
}
printf("\n");
}
#else
#define TRACE_COMMENT(ch)
#define TRACE_TK(ch)
#define TRACE_NAME(start,end)
#define TRACE_STRING(start,end)
#define TRACE_HEXSTRING(start,end)
#endif
#endif // SkPdfUtils_DEFINED
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