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/*
* Copyright 2010 The Android Open Source Project
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "SkPDFFormXObject.h"
#include "SkPDFUtils.h"
sk_sp<SkPDFObject> SkPDFMakeFormXObject(std::unique_ptr<SkStreamAsset> content,
sk_sp<SkPDFArray> mediaBox,
sk_sp<SkPDFDict> resourceDict,
const SkMatrix& inverseTransform,
const char* colorSpace) {
auto form = sk_make_sp<SkPDFStream>(std::move(content));
form->dict()->insertName("Type", "XObject");
form->dict()->insertName("Subtype", "Form");
if (!inverseTransform.isIdentity()) {
sk_sp<SkPDFObject> mat(SkPDFUtils::MatrixToArray(inverseTransform));
form->dict()->insertObject("Matrix", std::move(mat));
}
form->dict()->insertObject("Resources", std::move(resourceDict));
form->dict()->insertObject("BBox", std::move(mediaBox));
// Right now FormXObject is only used for saveLayer, which implies
// isolated blending. Do this conditionally if that changes.
// TODO(halcanary): Is this comment obsolete, since we use it for
// alpha masks?
auto group = sk_make_sp<SkPDFDict>("Group");
group->insertName("S", "Transparency");
if (colorSpace != nullptr) {
group->insertName("CS", colorSpace);
}
group->insertBool("I", true); // Isolated.
form->dict()->insertObject("Group", std::move(group));
return form;
}
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