1 2 /* 3 * Copyright 2011 Google Inc. 4 * 5 * Use of this source code is governed by a BSD-style license that can be 6 * found in the LICENSE file. 7 */ 8 9 10 #ifndef SkPDFUtils_DEFINED 11 #define SkPDFUtils_DEFINED 12 13 #include "SkPaint.h" 14 #include "SkPath.h" 15 16 class SkMatrix; 17 class SkPath; 18 class SkPDFArray; 19 struct SkRect; 20 class SkWStream; 21 22 #if 0 23 #define PRINT_NOT_IMPL(str) fprintf(stderr, str) 24 #else 25 #define PRINT_NOT_IMPL(str) 26 #endif 27 28 #define NOT_IMPLEMENTED(condition, assert) \ 29 do { \ 30 if ((bool)(condition)) { \ 31 PRINT_NOT_IMPL("NOT_IMPLEMENTED: " #condition "\n"); \ 32 SkDEBUGCODE(SkASSERT(!assert);) \ 33 } \ 34 } while (0) 35 36 class SkPDFUtils { 37 public: 38 static SkPDFArray* RectToArray(const SkRect& rect); 39 static SkPDFArray* MatrixToArray(const SkMatrix& matrix); 40 static void AppendTransform(const SkMatrix& matrix, SkWStream* content); 41 42 static void MoveTo(SkScalar x, SkScalar y, SkWStream* content); 43 static void AppendLine(SkScalar x, SkScalar y, SkWStream* content); 44 static void AppendCubic(SkScalar ctl1X, SkScalar ctl1Y, 45 SkScalar ctl2X, SkScalar ctl2Y, 46 SkScalar dstX, SkScalar dstY, SkWStream* content); 47 static void AppendRectangle(const SkRect& rect, SkWStream* content); 48 static void EmitPath(const SkPath& path, SkPaint::Style paintStyle, 49 bool doConsumeDegerates, SkWStream* content); 50 static void EmitPath(const SkPath& path, SkPaint::Style paintStyle, 51 SkWStream* content) { 52 SkPDFUtils::EmitPath(path, paintStyle, true, content); 53 } 54 static void ClosePath(SkWStream* content); 55 static void PaintPath(SkPaint::Style style, SkPath::FillType fill, 56 SkWStream* content); 57 static void StrokePath(SkWStream* content); 58 static void DrawFormXObject(int objectIndex, SkWStream* content); 59 static void ApplyGraphicState(int objectIndex, SkWStream* content); 60 static void ApplyPattern(int objectIndex, SkWStream* content); 61 62 // 3 = '-', '.', and '\0' characters. 63 // 9 = number of significant digits 64 // abs(FLT_MIN_10_EXP) = number of zeros in FLT_MIN 65 static const size_t kMaximumFloatDecimalLength = 3 + 9 - FLT_MIN_10_EXP; 66 // FloatToDecimal is exposed for unit tests. 67 static size_t FloatToDecimal(float value, 68 char output[kMaximumFloatDecimalLength]); 69 static void AppendScalar(SkScalar value, SkWStream* stream); 70 static SkString FormatString(const char* input, size_t len); 71 }; 72 73 #endif 74
