1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/gfx/skia/trunk/src/pdf/SkPDFResourceDict.h Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,101 @@
1.4 +/*
1.5 + * Copyright 2013 Google Inc.
1.6 + *
1.7 + * Use of this source code is governed by a BSD-style license that can be
1.8 + * found in the LICENSE file.
1.9 + */
1.10 +
1.11 +#ifndef SkPDFResourceDict_DEFINED
1.12 +#define SkPDFResourceDict_DEFINED
1.13 +
1.14 +#include "SkPDFTypes.h"
1.15 +#include "SkTDArray.h"
1.16 +#include "SkTSet.h"
1.17 +#include "SkTypes.h"
1.18 +
1.19 +/** \class SkPDFResourceDict
1.20 +
1.21 + A resource dictionary, which maintains the relevant sub-dicts and
1.22 + allows generation of a list of referenced SkPDFObjects inserted with
1.23 + insertResourceAsRef.
1.24 +*/
1.25 +class SkPDFResourceDict : public SkPDFDict {
1.26 +public:
1.27 + SK_DECLARE_INST_COUNT(SkPDFResourceDict)
1.28 +
1.29 + enum SkPDFResourceType{
1.30 + kExtGState_ResourceType,
1.31 + kPattern_ResourceType,
1.32 + kXObject_ResourceType,
1.33 + kFont_ResourceType,
1.34 + // These additional types are defined by the spec, but not
1.35 + // currently used by Skia: ColorSpace, Shading, Properties
1.36 + kResourceTypeCount
1.37 + };
1.38 +
1.39 + /** Create a PDF resource dictionary.
1.40 + * The full set of ProcSet entries is automatically created for backwards
1.41 + * compatibility, as recommended by the PDF spec.
1.42 + */
1.43 + SkPDFResourceDict();
1.44 +
1.45 + /** Add the value SkPDFObject as a reference to the resource dictionary
1.46 + * with the give type and key.
1.47 + * The relevant sub-dicts will be automatically generated, and the
1.48 + * resource will be named by concatenating a type-specific prefix and
1.49 + * the input key.
1.50 + * This object will be part of the resource list when requested later.
1.51 + * @param type The type of resource being entered, like
1.52 + * kPattern_ResourceType or kExtGState_ResourceType.
1.53 + * @param key The resource key, should be unique within its type.
1.54 + * @param value The resource itself.
1.55 + * @return The value argument is returned.
1.56 + */
1.57 + SkPDFObject* insertResourceAsReference(SkPDFResourceType type, int key,
1.58 + SkPDFObject* value);
1.59 +
1.60 + /**
1.61 + * Gets resources inserted into this dictionary as a reference.
1.62 + *
1.63 + * @param knownResourceObjects Set containing currently known resources.
1.64 + * Resources in the dict and this set will not be added to the output.
1.65 + * @param newResourceObjects Output set to which non-preexisting resources
1.66 + * will be added.
1.67 + * @param recursive Whether or not to add resources of resources.
1.68 + */
1.69 + void getReferencedResources(
1.70 + const SkTSet<SkPDFObject*>& knownResourceObjects,
1.71 + SkTSet<SkPDFObject*>* newResourceObjects,
1.72 + bool recursive) const;
1.73 +
1.74 + /**
1.75 + * Returns the name for the resource that will be generated by the resource
1.76 + * dict.
1.77 + *
1.78 + * @param type The type of resource being entered, like
1.79 + * kPattern_ResourceType or kExtGState_ResourceType.
1.80 + * @param key The resource key, should be unique within its type.
1.81 + */
1.82 + static SkString getResourceName(SkPDFResourceType type, int key);
1.83 +
1.84 +private:
1.85 + /** Add the value to the dictionary with the given key. Refs value.
1.86 + * The relevant sub-dicts will be automatically generated, and the
1.87 + * resource will be named by concatenating a type-specific prefix and
1.88 + * the input key.
1.89 + * The object will NOT be part of the resource list when requested later.
1.90 + * @param type The type of resource being entered.
1.91 + * @param key The resource key, should be unique within its type.
1.92 + * @param value The resource itself.
1.93 + * @return The value argument is returned.
1.94 + */
1.95 + SkPDFObject* insertResource(SkPDFResourceType type, int key,
1.96 + SkPDFObject* value);
1.97 +
1.98 + SkTSet<SkPDFObject*> fResources;
1.99 +
1.100 + SkTDArray<SkPDFDict*> fTypes;
1.101 + typedef SkPDFDict INHERITED;
1.102 +};
1.103 +
1.104 +#endif
