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/* -*- 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"
#include "InlineTranslator.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()) {
bool success = RecordedEvent::DoWithEventFromStream(
aRecording, static_cast<RecordedEvent::EventType>(eventType),
[&](RecordedEvent* recordedEvent) -> bool {
// Make sure that the whole event was read from the stream.
if (!aRecording.good()) {
return false;
}
return recordedEvent->PlayEvent(this);
});
if (!success) {
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();
}
already_AddRefed<SourceSurface> PrintTranslator::LookupExternalSurface(
uint64_t aKey) {
RefPtr<RecordedDependentSurface> surface = mDependentSurfaces.Get(aKey);
if (!surface) {
return nullptr;
}
RefPtr<DrawTarget> newDT = GetReferenceDrawTarget()->CreateSimilarDrawTarget(
surface->mSize, SurfaceFormat::B8G8R8A8);
InlineTranslator translator(newDT, nullptr);
translator.SetDependentSurfaces(&mDependentSurfaces);
if (!translator.TranslateRecording((char*)surface->mRecording.mData,
surface->mRecording.mLen)) {
return nullptr;
}
RefPtr<SourceSurface> snapshot = newDT->Snapshot();
return snapshot.forget();
}
} // namespace layout
} // namespace mozilla
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