1 files changed, 70 insertions, 0 deletions
diff --git a/gfx/thebes/PrintTargetSkPDF.h b/gfx/thebes/PrintTargetSkPDF.h
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+++ b/gfx/thebes/PrintTargetSkPDF.h
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+/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 2 -*-
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef MOZILLA_GFX_PRINTTARGETSKPDF_H
+#define MOZILLA_GFX_PRINTTARGETSKPDF_H
+
+#include "mozilla/UniquePtr.h"
+#include "nsCOMPtr.h"
+#include "PrintTarget.h"
+#include "skia/include/core/SkCanvas.h"
+#include "skia/include/docs/SkPDFDocument.h"
+#include "skia/include/core/SkStream.h"
+
+namespace mozilla {
+namespace gfx {
+
+/**
+ * Skia PDF printing target.
+ */
+class PrintTargetSkPDF final : public PrintTarget {
+ public:
+  // The returned PrintTargetSkPDF keeps a raw pointer to the passed SkWStream
+  // but does not own it.  Callers are responsible for ensuring that passed
+  // stream outlives the returned PrintTarget.
+  static already_AddRefed<PrintTargetSkPDF> CreateOrNull(
+      UniquePtr<SkWStream> aStream, const IntSize& aSizeInPoints);
+
+  nsresult BeginPrinting(const nsAString& aTitle,
+                         const nsAString& aPrintToFileName, int32_t aStartPage,
+                         int32_t aEndPage) override;
+  nsresult EndPrinting() override;
+  void Finish() override;
+
+  nsresult BeginPage() override;
+  nsresult EndPage() override;
+
+  already_AddRefed<DrawTarget> MakeDrawTarget(
+      const IntSize& aSize, DrawEventRecorder* aRecorder = nullptr) final;
+
+  already_AddRefed<DrawTarget> GetReferenceDrawTarget() final;
+
+ private:
+  PrintTargetSkPDF(const IntSize& aSize, UniquePtr<SkWStream> aStream);
+  virtual ~PrintTargetSkPDF();
+
+  // Do not hand out references to this object.  It holds a non-owning
+  // reference to mOStreame, so must not outlive mOStream.
+  sk_sp<SkDocument> mPDFDoc;
+
+  // The stream that the SkDocument outputs to.
+  UniquePtr<SkWStream> mOStream;
+
+  // The current page's SkCanvas and its wrapping DrawTarget:
+  // Canvas is owned by mPDFDoc, which handles its deletion.
+  SkCanvas* mPageCanvas;
+  RefPtr<DrawTarget> mPageDT;
+
+  // Members needed to provide a reference DrawTarget:
+  sk_sp<SkDocument> mRefPDFDoc;
+  // Canvas owned by mRefPDFDoc, which handles its deletion.
+  SkCanvas* mRefCanvas;
+  SkDynamicMemoryWStream mRefOStream;
+};
+
+}  // namespace gfx
+}  // namespace mozilla
+
+#endif /* MOZILLA_GFX_PRINTTARGETSKPDF_H */