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      1 /*
      2  * Copyright (C) 2011 Google Inc.
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 
     17 #ifndef SkPDFUtils_DEFINED
     18 #define SkPDFUtils_DEFINED
     19 
     20 #include "SkPath.h"
     21 
     22 class SkMatrix;
     23 class SkPath;
     24 class SkPDFArray;
     25 struct SkRect;
     26 
     27 #if 0
     28 #define PRINT_NOT_IMPL(str) fprintf(stderr, str)
     29 #else
     30 #define PRINT_NOT_IMPL(str)
     31 #endif
     32 
     33 #define NOT_IMPLEMENTED(condition, assert)                         \
     34     do {                                                           \
     35         if (condition) {                                           \
     36             PRINT_NOT_IMPL("NOT_IMPLEMENTED: " #condition "\n");   \
     37             SkDEBUGCODE(SkASSERT(!assert);)                        \
     38         }                                                          \
     39     } while(0)
     40 
     41 class SkPDFUtils {
     42 public:
     43     static SkPDFArray* MatrixToArray(const SkMatrix& matrix);
     44     static void AppendTransform(const SkMatrix& matrix, SkWStream* content);
     45 
     46     static void MoveTo(SkScalar x, SkScalar y, SkWStream* content);
     47     static void AppendLine(SkScalar x, SkScalar y, SkWStream* content);
     48     static void AppendCubic(SkScalar ctl1X, SkScalar ctl1Y,
     49                             SkScalar ctl2X, SkScalar ctl2Y,
     50                             SkScalar dstX, SkScalar dstY, SkWStream* content);
     51     static void AppendRectangle(const SkRect& rect, SkWStream* content);
     52     static void EmitPath(const SkPath& path, SkWStream* content);
     53     static void ClosePath(SkWStream* content);
     54     static void PaintPath(SkPaint::Style style, SkPath::FillType fill,
     55                           SkWStream* content);
     56     static void StrokePath(SkWStream* content);
     57     static void DrawFormXObject(int objectIndex, SkWStream* content);
     58     static void ApplyGraphicState(int objectIndex, SkWStream* content);
     59 };
     60 
     61 #endif
     62