forked from mirrors/gecko-dev
ed62b1d4a1
This changes the serialization format a little bit. We now have an index at the end of the blob. This is currently used to store a list of the used font keys. In the future we'll add rects and can use it for invalidation.
111 lines
2.9 KiB
C++
111 lines
2.9 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "InlineTranslator.h"
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#include "RecordedEventImpl.h"
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#include "DrawEventRecorder.h"
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#include "gfxContext.h"
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#include "nsDeviceContext.h"
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#include "mozilla/gfx/RecordingTypes.h"
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#include "mozilla/UniquePtr.h"
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using namespace mozilla::gfx;
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namespace mozilla {
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namespace gfx {
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InlineTranslator::InlineTranslator(DrawTarget* aDT, void* aFontContext)
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: mBaseDT(aDT)
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, mFontContext(aFontContext)
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{
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}
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bool
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InlineTranslator::TranslateRecording(char *aData, size_t aLen)
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{
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// an istream like class for reading from memory
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struct MemReader {
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MemReader(char *aData, size_t aLen) : mData(aData), mEnd(aData + aLen) {}
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void read(char* s, std::streamsize n) {
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if (n <= (mEnd - mData)) {
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memcpy(s, mData, n);
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mData += n;
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} else {
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// We've requested more data than is available
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// set the Reader into an eof state
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mData = mEnd + 1;
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}
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}
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bool eof() {
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return mData > mEnd;
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}
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bool good() {
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return !eof();
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}
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char *mData;
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char *mEnd;
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};
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MemReader reader(aData, aLen);
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uint32_t magicInt;
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ReadElement(reader, magicInt);
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if (magicInt != mozilla::gfx::kMagicInt) {
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return false;
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}
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uint16_t majorRevision;
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ReadElement(reader, majorRevision);
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if (majorRevision != kMajorRevision) {
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return false;
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}
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uint16_t minorRevision;
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ReadElement(reader, minorRevision);
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if (minorRevision > kMinorRevision) {
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return false;
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}
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int32_t eventType;
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ReadElement(reader, eventType);
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while (reader.good()) {
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bool success = RecordedEvent::DoWithEvent(reader, static_cast<RecordedEvent::EventType>(eventType),
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[&] (RecordedEvent *recordedEvent) {
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// Make sure that the whole event was read from the stream successfully.
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if (!reader.good()) {
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return false;
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}
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if (!recordedEvent->PlayEvent(this)) {
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return false;
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}
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return true;
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});
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if (!success) {
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return false;
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}
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ReadElement(reader, eventType);
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}
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return true;
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}
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already_AddRefed<DrawTarget>
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InlineTranslator::CreateDrawTarget(ReferencePtr aRefPtr,
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const gfx::IntSize &aSize,
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gfx::SurfaceFormat aFormat)
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{
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RefPtr<DrawTarget> drawTarget = mBaseDT;
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AddDrawTarget(aRefPtr, drawTarget);
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return drawTarget.forget();
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}
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} // namespace gfx
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} // namespace mozilla
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