1 /* 2 * Copyright 2013 Google Inc. 3 * 4 * Use of this source code is governed by a BSD-style license that can be 5 * found in the LICENSE file. 6 */ 7 8 #ifndef SkPDFResourceDict_DEFINED 9 #define SkPDFResourceDict_DEFINED 10 11 #include "SkRefCnt.h" 12 #include "SkTDArray.h" 13 14 class SkPDFDict; 15 class SkPDFObject; 16 17 /** \class SkPDFResourceDict 18 19 A resource dictionary, which maintains the relevant sub-dicts and 20 allows generation of a list of referenced SkPDFObjects inserted with 21 insertResourceAsRef. 22 */ 23 class SkPDFResourceDict { 24 public: 25 enum SkPDFResourceType { 26 kExtGState_ResourceType, 27 kPattern_ResourceType, 28 kXObject_ResourceType, 29 kFont_ResourceType, 30 // These additional types are defined by the spec, but not 31 // currently used by Skia: ColorSpace, Shading, Properties 32 kResourceTypeCount 33 }; 34 35 static char GetResourceTypePrefix(SkPDFResourceDict::SkPDFResourceType type); 36 37 /** Create a PDF resource dictionary. 38 * The full set of ProcSet entries is automatically created for backwards 39 * compatibility, as recommended by the PDF spec. 40 * 41 * Any arguments can be nullptr. 42 */ 43 static sk_sp<SkPDFDict> Make( 44 const SkTDArray<SkPDFObject*>* gStateResources, 45 const SkTDArray<SkPDFObject*>* patternResources, 46 const SkTDArray<SkPDFObject*>* xObjectResources, 47 const SkTDArray<SkPDFObject*>* fontResources); 48 49 /** 50 * Returns the name for the resource that will be generated by the resource 51 * dict. 52 * 53 * @param type The type of resource being entered, like 54 * kPattern_ResourceType or kExtGState_ResourceType. 55 * @param key The resource key, should be unique within its type. 56 */ 57 static SkString getResourceName(SkPDFResourceType type, int key); 58 }; 59 60 #endif 61
