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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.
*/
#include "SkPDFResourceDict.h"
#include "SkPDFTypes.h"
#include "SkPostConfig.h"
// Sanity check that the values of enum SkPDFResourceType correspond to the
// expected values as defined in the arrays below.
// If these are failing, you may need to update the resource_type_prefixes
// and resource_type_names arrays below.
static_assert(SkPDFResourceDict::kExtGState_ResourceType == 0, "resource_type_mismatch");
static_assert(SkPDFResourceDict::kPattern_ResourceType == 1, "resource_type_mismatch");
static_assert(SkPDFResourceDict::kXObject_ResourceType == 2, "resource_type_mismatch");
static_assert(SkPDFResourceDict::kFont_ResourceType == 3, "resource_type_mismatch");
static const char resource_type_prefixes[] = {
'G',
'P',
'X',
'F'
};
static const char* resource_type_names[] = {
"ExtGState",
"Pattern",
"XObject",
"Font"
};
char SkPDFResourceDict::GetResourceTypePrefix(
SkPDFResourceDict::SkPDFResourceType type) {
SkASSERT(type >= 0);
SkASSERT(type < SkPDFResourceDict::kResourceTypeCount);
return resource_type_prefixes[type];
}
static const char* get_resource_type_name(
SkPDFResourceDict::SkPDFResourceType type) {
SkASSERT(type >= 0);
SkASSERT(type < SK_ARRAY_COUNT(resource_type_names));
return resource_type_names[type];
}
SkString SkPDFResourceDict::getResourceName(
SkPDFResourceDict::SkPDFResourceType type, int key) {
return SkStringPrintf("%c%d", SkPDFResourceDict::GetResourceTypePrefix(type), key);
}
static void add_subdict(
const SkTDArray<SkPDFObject*>& resourceList,
SkPDFResourceDict::SkPDFResourceType type,
SkPDFDict* dst) {
if (0 == resourceList.count()) {
return;
}
auto resources = sk_make_sp<SkPDFDict>();
for (int i = 0; i < resourceList.count(); i++) {
resources->insertObjRef(SkPDFResourceDict::getResourceName(type, i),
sk_ref_sp(resourceList[i]));
}
dst->insertObject(get_resource_type_name(type), std::move(resources));
}
sk_sp<SkPDFDict> SkPDFResourceDict::Make(
const SkTDArray<SkPDFObject*>* gStateResources,
const SkTDArray<SkPDFObject*>* patternResources,
const SkTDArray<SkPDFObject*>* xObjectResources,
const SkTDArray<SkPDFObject*>* fontResources) {
auto dict = sk_make_sp<SkPDFDict>();
static const char kProcs[][7] = {
"PDF", "Text", "ImageB", "ImageC", "ImageI"};
auto procSets = sk_make_sp<SkPDFArray>();
procSets->reserve(SK_ARRAY_COUNT(kProcs));
for (size_t i = 0; i < SK_ARRAY_COUNT(kProcs); i++) {
procSets->appendName(kProcs[i]);
}
dict->insertObject("ProcSets", std::move(procSets));
if (gStateResources) {
add_subdict(*gStateResources, kExtGState_ResourceType, dict.get());
}
if (patternResources) {
add_subdict(*patternResources, kPattern_ResourceType, dict.get());
}
if (xObjectResources) {
add_subdict(*xObjectResources, kXObject_ResourceType, dict.get());
}
if (fontResources) {
add_subdict(*fontResources, kFont_ResourceType, dict.get());
}
return dict;
}
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