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-rw-r--r--layout/printing/PrintTranslator.cpp102
1 files changed, 102 insertions, 0 deletions
diff --git a/layout/printing/PrintTranslator.cpp b/layout/printing/PrintTranslator.cpp
new file mode 100644
index 000000000..0bda505ba
--- /dev/null
+++ b/layout/printing/PrintTranslator.cpp
@@ -0,0 +1,102 @@
+/* -*- 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(std::istream& 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();
+}
+
+FontType
+PrintTranslator::GetDesiredFontType()
+{
+ switch (mBaseDT->GetBackendType()) {
+ case BackendType::DIRECT2D:
+ return FontType::DWRITE;
+ case BackendType::CAIRO:
+ return FontType::CAIRO;
+ case BackendType::SKIA:
+ return FontType::SKIA;
+ default:
+ return FontType::CAIRO;
+ }
+}
+
+} // namespace layout
+} // namespace mozilla