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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 "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.
SK_COMPILE_ASSERT(SkPDFResourceDict::kExtGState_ResourceType == 0,
resource_type_mismatch);
SK_COMPILE_ASSERT(SkPDFResourceDict::kPattern_ResourceType == 1,
resource_type_mismatch);
SK_COMPILE_ASSERT(SkPDFResourceDict::kXObject_ResourceType == 2,
resource_type_mismatch);
SK_COMPILE_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"
};
static char get_resource_type_prefix(
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 < SkPDFResourceDict::kResourceTypeCount);
return resource_type_names[type];
}
SkPDFResourceDict::SkPDFResourceDict() : SkPDFDict() {
const char procs[][7] = {"PDF", "Text", "ImageB", "ImageC", "ImageI"};
SkPDFArray* procSets = SkNEW(SkPDFArray());
procSets->reserve(SK_ARRAY_COUNT(procs));
for (size_t i = 0; i < SK_ARRAY_COUNT(procs); i++) {
procSets->appendName(procs[i]);
}
insert("ProcSets", procSets)->unref();
// Actual sub-dicts will be lazily added later
fTypes.setCount(kResourceTypeCount);
for (int i=0; i < kResourceTypeCount; i++) {
fTypes[i] = NULL;
}
}
SkPDFObject* SkPDFResourceDict::insertResourceAsReference(
SkPDFResourceType type, int key, SkPDFObject* value) {
SkAutoTUnref<SkPDFObjRef> ref(SkNEW_ARGS(SkPDFObjRef, (value)));
insertResource(type, key, ref);
fResources.add(value);
return value;
}
void SkPDFResourceDict::getReferencedResources(
const SkTSet<SkPDFObject*>& knownResourceObjects,
SkTSet<SkPDFObject*>* newResourceObjects,
bool recursive) const {
// TODO: reserve not correct if we need to recursively explore.
newResourceObjects->setReserve(newResourceObjects->count() +
fResources.count());
for (int i = 0; i < fResources.count(); i++) {
if (!knownResourceObjects.contains(fResources[i]) &&
!newResourceObjects->contains(fResources[i])) {
newResourceObjects->add(fResources[i]);
fResources[i]->ref();
if (recursive) {
fResources[i]->getResources(knownResourceObjects,
newResourceObjects);
}
}
}
}
SkString SkPDFResourceDict::getResourceName(
SkPDFResourceType type, int key) {
SkString keyString;
keyString.printf("%c%d", get_resource_type_prefix(type), key);
return keyString;
}
SkPDFObject* SkPDFResourceDict::insertResource(
SkPDFResourceType type, int key, SkPDFObject* value) {
SkPDFDict* typeDict = fTypes[type];
if (NULL == typeDict) {
SkAutoTUnref<SkPDFDict> newDict(SkNEW(SkPDFDict()));
SkAutoTUnref<SkPDFName> typeName(
SkNEW_ARGS(SkPDFName, (get_resource_type_name(type))));
insert(typeName, newDict); // ref counting handled here
fTypes[type] = newDict;
typeDict = newDict.get();
}
SkAutoTUnref<SkPDFName> keyName(
SkNEW_ARGS(SkPDFName, (getResourceName(type, key))));
typeDict->insert(keyName, value);
return value;
}
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