1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
2 /* vim: set ts=8 sts=2 et sw=2 tw=80: */
3 /* This Source Code Form is subject to the terms of the Mozilla Public
4 * License, v. 2.0. If a copy of the MPL was not distributed with this
5 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
7 #include "InlineTranslator.h"
8 #include "RecordedEventImpl.h"
9 #include "DrawEventRecorder.h"
11 #include "gfxContext.h"
12 #include "nsDeviceContext.h"
13 #include "mozilla/gfx/RecordingTypes.h"
14 #include "mozilla/UniquePtr.h"
16 using namespace mozilla::gfx
;
18 namespace mozilla::gfx
{
20 InlineTranslator::InlineTranslator() : mFontContext(nullptr) {}
22 InlineTranslator::InlineTranslator(DrawTarget
* aDT
, void* aFontContext
)
23 : mBaseDT(aDT
), mFontContext(aFontContext
) {}
25 bool InlineTranslator::TranslateRecording(char* aData
, size_t aLen
) {
26 // an istream like class for reading from memory
28 MemReader(char* aData
, size_t aLen
) : mData(aData
), mEnd(aData
+ aLen
) {}
29 void read(char* s
, std::streamsize n
) {
30 if (n
<= (mEnd
- mData
)) {
34 // We've requested more data than is available
35 // set the Reader into an eof state
39 bool eof() { return mData
> mEnd
; }
40 bool good() { return !eof(); }
41 void SetIsBad() { mData
= mEnd
+ 1; }
46 MemReader
reader(aData
, aLen
);
49 ReadElement(reader
, magicInt
);
50 if (magicInt
!= mozilla::gfx::kMagicInt
) {
55 uint16_t majorRevision
;
56 ReadElement(reader
, majorRevision
);
57 if (majorRevision
!= kMajorRevision
) {
62 uint16_t minorRevision
;
63 ReadElement(reader
, minorRevision
);
64 if (minorRevision
> kMinorRevision
) {
70 ReadElement(reader
, eventType
);
71 while (reader
.good()) {
72 bool success
= RecordedEvent::DoWithEvent(
73 reader
, static_cast<RecordedEvent::EventType
>(eventType
),
74 [&](RecordedEvent
* recordedEvent
) -> bool {
75 // Make sure that the whole event was read from the stream
82 if (!recordedEvent
->PlayEvent(this)) {
90 mError
= RecordedEvent::GetEventName(
91 static_cast<RecordedEvent::EventType
>(eventType
)) +
96 ReadElement(reader
, eventType
);
102 already_AddRefed
<DrawTarget
> InlineTranslator::CreateDrawTarget(
103 ReferencePtr aRefPtr
, const gfx::IntSize
& aSize
,
104 gfx::SurfaceFormat aFormat
) {
105 MOZ_ASSERT(mBaseDT
, "mBaseDT has not been initialized.");
107 RefPtr
<DrawTarget
> drawTarget
= mBaseDT
;
108 AddDrawTarget(aRefPtr
, drawTarget
);
109 return drawTarget
.forget();
112 } // namespace mozilla::gfx