/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */

/* vim: set ts=8 sts=2 et sw=2 tw=80: */

/* 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/. */

#include "PrintTranslator.h"

#include "gfxContext.h"

#include "nsDeviceContext.h"

#include "mozilla/gfx/RecordedEvent.h"

#include "mozilla/gfx/RecordingTypes.h"

#include "mozilla/UniquePtr.h"

using namespace mozilla::gfx;

namespace mozilla {

namespace layout {

PrintTranslator::PrintTranslator(nsDeviceContext* aDeviceContext)

  : mDeviceContext(aDeviceContext)

{

  RefPtr<gfxContext> context = mDeviceContext->CreateReferenceRenderingContext();

  mBaseDT = context->GetDrawTarget();

}

bool

PrintTranslator::TranslateRecording(PRFileDescStream& aRecording)

{

  uint32_t magicInt;

  ReadElement(aRecording, magicInt);

  if (magicInt != mozilla::gfx::kMagicInt) {

    return false;

  }

  uint16_t majorRevision;

  ReadElement(aRecording, majorRevision);

  if (majorRevision != kMajorRevision) {

    return false;

  }

  uint16_t minorRevision;

  ReadElement(aRecording, minorRevision);

  if (minorRevision > kMinorRevision) {

    return false;

  }

  int32_t eventType;

  ReadElement(aRecording, eventType);

  while (aRecording.good()) {

    UniquePtr<RecordedEvent> recordedEvent(

      RecordedEvent::LoadEventFromStream(aRecording,

      static_cast<RecordedEvent::EventType>(eventType)));

    // Make sure that the whole event was read from the stream successfully.

    if (!aRecording.good() || !recordedEvent) {

      return false;

    }

    if (!recordedEvent->PlayEvent(this)) {

      return false;

    }

    ReadElement(aRecording, eventType);

  }

  return true;

}

already_AddRefed<DrawTarget>

PrintTranslator::CreateDrawTarget(ReferencePtr aRefPtr,

                                  const gfx::IntSize &aSize,

                                  gfx::SurfaceFormat aFormat)

{

  RefPtr<gfxContext> context = mDeviceContext->CreateRenderingContext();

  if (!context) {

    NS_WARNING("Failed to create rendering context for print.");

    return nullptr;

  }

  RefPtr<DrawTarget> drawTarget = context->GetDrawTarget();

  AddDrawTarget(aRefPtr, drawTarget);

  return drawTarget.forget();

}

} // namespace layout

} // namespace mozilla