forked from Floorp-Projects/Floorp
-
Notifications
You must be signed in to change notification settings - Fork 0
/
Copy pathVectorImage.cpp
1532 lines (1261 loc) · 50.9 KB
/
VectorImage.cpp
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* 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 "VectorImage.h"
#include "gfx2DGlue.h"
#include "gfxContext.h"
#include "gfxDrawable.h"
#include "gfxPlatform.h"
#include "gfxUtils.h"
#include "imgFrame.h"
#include "mozilla/AutoRestore.h"
#include "mozilla/MemoryReporting.h"
#include "mozilla/dom/Event.h"
#include "mozilla/dom/SVGSVGElement.h"
#include "mozilla/dom/SVGDocument.h"
#include "mozilla/gfx/2D.h"
#include "mozilla/gfx/gfxVars.h"
#include "mozilla/PendingAnimationTracker.h"
#include "mozilla/PresShell.h"
#include "mozilla/RefPtr.h"
#include "mozilla/Tuple.h"
#include "nsIStreamListener.h"
#include "nsMimeTypes.h"
#include "nsPresContext.h"
#include "nsRect.h"
#include "nsString.h"
#include "nsStubDocumentObserver.h"
#include "SVGObserverUtils.h" // for SVGRenderingObserver
#include "nsWindowSizes.h"
#include "ImageRegion.h"
#include "ISurfaceProvider.h"
#include "LookupResult.h"
#include "Orientation.h"
#include "SVGDocumentWrapper.h"
#include "SVGDrawingParameters.h"
#include "nsIDOMEventListener.h"
#include "SurfaceCache.h"
#include "mozilla/dom/Document.h"
namespace mozilla {
using namespace dom;
using namespace dom::SVGPreserveAspectRatio_Binding;
using namespace gfx;
using namespace layers;
namespace image {
// Helper-class: SVGRootRenderingObserver
class SVGRootRenderingObserver final : public SVGRenderingObserver {
public:
NS_DECL_ISUPPORTS
SVGRootRenderingObserver(SVGDocumentWrapper* aDocWrapper,
VectorImage* aVectorImage)
: SVGRenderingObserver(),
mDocWrapper(aDocWrapper),
mVectorImage(aVectorImage),
mHonoringInvalidations(true) {
MOZ_ASSERT(mDocWrapper, "Need a non-null SVG document wrapper");
MOZ_ASSERT(mVectorImage, "Need a non-null VectorImage");
StartObserving();
Element* elem = GetReferencedElementWithoutObserving();
MOZ_ASSERT(elem, "no root SVG node for us to observe");
SVGObserverUtils::AddRenderingObserver(elem, this);
mInObserverList = true;
}
void ResumeHonoringInvalidations() { mHonoringInvalidations = true; }
protected:
virtual ~SVGRootRenderingObserver() {
// This needs to call our GetReferencedElementWithoutObserving override,
// so must be called here rather than in our base class's dtor.
StopObserving();
}
Element* GetReferencedElementWithoutObserving() final {
return mDocWrapper->GetRootSVGElem();
}
virtual void OnRenderingChange() override {
Element* elem = GetReferencedElementWithoutObserving();
MOZ_ASSERT(elem, "missing root SVG node");
if (mHonoringInvalidations && !mDocWrapper->ShouldIgnoreInvalidation()) {
nsIFrame* frame = elem->GetPrimaryFrame();
if (!frame || frame->PresShell()->IsDestroying()) {
// We're being destroyed. Bail out.
return;
}
// Ignore further invalidations until we draw.
mHonoringInvalidations = false;
mVectorImage->InvalidateObserversOnNextRefreshDriverTick();
}
// Our caller might've removed us from rendering-observer list.
// Add ourselves back!
if (!mInObserverList) {
SVGObserverUtils::AddRenderingObserver(elem, this);
mInObserverList = true;
}
}
// Private data
const RefPtr<SVGDocumentWrapper> mDocWrapper;
VectorImage* const mVectorImage; // Raw pointer because it owns me.
bool mHonoringInvalidations;
};
NS_IMPL_ISUPPORTS(SVGRootRenderingObserver, nsIMutationObserver)
class SVGParseCompleteListener final : public nsStubDocumentObserver {
public:
NS_DECL_ISUPPORTS
SVGParseCompleteListener(SVGDocument* aDocument, VectorImage* aImage)
: mDocument(aDocument), mImage(aImage) {
MOZ_ASSERT(mDocument, "Need an SVG document");
MOZ_ASSERT(mImage, "Need an image");
mDocument->AddObserver(this);
}
private:
~SVGParseCompleteListener() {
if (mDocument) {
// The document must have been destroyed before we got our event.
// Otherwise this can't happen, since documents hold strong references to
// their observers.
Cancel();
}
}
public:
void EndLoad(Document* aDocument) override {
MOZ_ASSERT(aDocument == mDocument, "Got EndLoad for wrong document?");
// OnSVGDocumentParsed will release our owner's reference to us, so ensure
// we stick around long enough to complete our work.
RefPtr<SVGParseCompleteListener> kungFuDeathGrip(this);
mImage->OnSVGDocumentParsed();
}
void Cancel() {
MOZ_ASSERT(mDocument, "Duplicate call to Cancel");
if (mDocument) {
mDocument->RemoveObserver(this);
mDocument = nullptr;
}
}
private:
RefPtr<SVGDocument> mDocument;
VectorImage* const mImage; // Raw pointer to owner.
};
NS_IMPL_ISUPPORTS(SVGParseCompleteListener, nsIDocumentObserver)
class SVGLoadEventListener final : public nsIDOMEventListener {
public:
NS_DECL_ISUPPORTS
SVGLoadEventListener(Document* aDocument, VectorImage* aImage)
: mDocument(aDocument), mImage(aImage) {
MOZ_ASSERT(mDocument, "Need an SVG document");
MOZ_ASSERT(mImage, "Need an image");
mDocument->AddEventListener(NS_LITERAL_STRING("MozSVGAsImageDocumentLoad"),
this, true, false);
mDocument->AddEventListener(NS_LITERAL_STRING("SVGAbort"), this, true,
false);
mDocument->AddEventListener(NS_LITERAL_STRING("SVGError"), this, true,
false);
}
private:
~SVGLoadEventListener() {
if (mDocument) {
// The document must have been destroyed before we got our event.
// Otherwise this can't happen, since documents hold strong references to
// their observers.
Cancel();
}
}
public:
NS_IMETHOD HandleEvent(Event* aEvent) override {
MOZ_ASSERT(mDocument, "Need an SVG document. Received multiple events?");
// OnSVGDocumentLoaded/OnSVGDocumentError will release our owner's reference
// to us, so ensure we stick around long enough to complete our work.
RefPtr<SVGLoadEventListener> kungFuDeathGrip(this);
nsAutoString eventType;
aEvent->GetType(eventType);
MOZ_ASSERT(eventType.EqualsLiteral("MozSVGAsImageDocumentLoad") ||
eventType.EqualsLiteral("SVGAbort") ||
eventType.EqualsLiteral("SVGError"),
"Received unexpected event");
if (eventType.EqualsLiteral("MozSVGAsImageDocumentLoad")) {
mImage->OnSVGDocumentLoaded();
} else {
mImage->OnSVGDocumentError();
}
return NS_OK;
}
void Cancel() {
MOZ_ASSERT(mDocument, "Duplicate call to Cancel");
if (mDocument) {
mDocument->RemoveEventListener(
NS_LITERAL_STRING("MozSVGAsImageDocumentLoad"), this, true);
mDocument->RemoveEventListener(NS_LITERAL_STRING("SVGAbort"), this, true);
mDocument->RemoveEventListener(NS_LITERAL_STRING("SVGError"), this, true);
mDocument = nullptr;
}
}
private:
nsCOMPtr<Document> mDocument;
VectorImage* const mImage; // Raw pointer to owner.
};
NS_IMPL_ISUPPORTS(SVGLoadEventListener, nsIDOMEventListener)
// Helper-class: SVGDrawingCallback
class SVGDrawingCallback : public gfxDrawingCallback {
public:
SVGDrawingCallback(SVGDocumentWrapper* aSVGDocumentWrapper,
const IntSize& aViewportSize, const IntSize& aSize,
uint32_t aImageFlags)
: mSVGDocumentWrapper(aSVGDocumentWrapper),
mViewportSize(aViewportSize),
mSize(aSize),
mImageFlags(aImageFlags) {}
virtual bool operator()(gfxContext* aContext, const gfxRect& aFillRect,
const SamplingFilter aSamplingFilter,
const gfxMatrix& aTransform) override;
private:
RefPtr<SVGDocumentWrapper> mSVGDocumentWrapper;
const IntSize mViewportSize;
const IntSize mSize;
uint32_t mImageFlags;
};
// Based loosely on nsSVGIntegrationUtils' PaintFrameCallback::operator()
bool SVGDrawingCallback::operator()(gfxContext* aContext,
const gfxRect& aFillRect,
const SamplingFilter aSamplingFilter,
const gfxMatrix& aTransform) {
MOZ_ASSERT(mSVGDocumentWrapper, "need an SVGDocumentWrapper");
// Get (& sanity-check) the helper-doc's presShell
RefPtr<PresShell> presShell = mSVGDocumentWrapper->GetPresShell();
MOZ_ASSERT(presShell, "GetPresShell returned null for an SVG image?");
#ifdef MOZ_GECKO_PROFILER
Document* doc = presShell->GetDocument();
nsIURI* uri = doc ? doc->GetDocumentURI() : nullptr;
AUTO_PROFILER_LABEL_DYNAMIC_NSCSTRING(
"SVG Image drawing", GRAPHICS,
nsPrintfCString("%dx%d %s", mSize.width, mSize.height,
uri ? uri->GetSpecOrDefault().get() : "N/A"));
#endif
gfxContextAutoSaveRestore contextRestorer(aContext);
// Clip to aFillRect so that we don't paint outside.
aContext->NewPath();
aContext->Rectangle(aFillRect);
aContext->Clip();
gfxMatrix matrix = aTransform;
if (!matrix.Invert()) {
return false;
}
aContext->SetMatrixDouble(
aContext->CurrentMatrixDouble().PreMultiply(matrix).PreScale(
double(mSize.width) / mViewportSize.width,
double(mSize.height) / mViewportSize.height));
nsPresContext* presContext = presShell->GetPresContext();
MOZ_ASSERT(presContext, "pres shell w/out pres context");
nsRect svgRect(0, 0, presContext->DevPixelsToAppUnits(mViewportSize.width),
presContext->DevPixelsToAppUnits(mViewportSize.height));
RenderDocumentFlags renderDocFlags =
RenderDocumentFlags::IgnoreViewportScrolling;
if (!(mImageFlags & imgIContainer::FLAG_SYNC_DECODE)) {
renderDocFlags |= RenderDocumentFlags::AsyncDecodeImages;
}
presShell->RenderDocument(svgRect, renderDocFlags,
NS_RGBA(0, 0, 0, 0), // transparent
aContext);
return true;
}
class MOZ_STACK_CLASS AutoRestoreSVGState final {
public:
AutoRestoreSVGState(const SVGDrawingParameters& aParams,
SVGDocumentWrapper* aSVGDocumentWrapper, bool& aIsDrawing,
bool aContextPaint)
: mIsDrawing(aIsDrawing)
// Apply any 'preserveAspectRatio' override (if specified) to the root
// element:
,
mPAR(aParams.svgContext, aSVGDocumentWrapper->GetRootSVGElem())
// Set the animation time:
,
mTime(aSVGDocumentWrapper->GetRootSVGElem(), aParams.animationTime) {
MOZ_ASSERT(!aIsDrawing);
MOZ_ASSERT(aSVGDocumentWrapper->GetDocument());
aIsDrawing = true;
// Set context paint (if specified) on the document:
if (aContextPaint) {
MOZ_ASSERT(aParams.svgContext->GetContextPaint());
mContextPaint.emplace(*aParams.svgContext->GetContextPaint(),
*aSVGDocumentWrapper->GetDocument());
}
}
private:
AutoRestore<bool> mIsDrawing;
AutoPreserveAspectRatioOverride mPAR;
AutoSVGTimeSetRestore mTime;
Maybe<AutoSetRestoreSVGContextPaint> mContextPaint;
};
// Implement VectorImage's nsISupports-inherited methods
NS_IMPL_ISUPPORTS(VectorImage, imgIContainer, nsIStreamListener,
nsIRequestObserver)
//------------------------------------------------------------------------------
// Constructor / Destructor
VectorImage::VectorImage(nsIURI* aURI /* = nullptr */)
: ImageResource(aURI), // invoke superclass's constructor
mLockCount(0),
mIsInitialized(false),
mDiscardable(false),
mIsFullyLoaded(false),
mIsDrawing(false),
mHaveAnimations(false),
mHasPendingInvalidation(false) {}
VectorImage::~VectorImage() {
CancelAllListeners();
SurfaceCache::RemoveImage(ImageKey(this));
}
//------------------------------------------------------------------------------
// Methods inherited from Image.h
nsresult VectorImage::Init(const char* aMimeType, uint32_t aFlags) {
// We don't support re-initialization
if (mIsInitialized) {
return NS_ERROR_ILLEGAL_VALUE;
}
MOZ_ASSERT(!mIsFullyLoaded && !mHaveAnimations && !mError,
"Flags unexpectedly set before initialization");
MOZ_ASSERT(!strcmp(aMimeType, IMAGE_SVG_XML), "Unexpected mimetype");
mDiscardable = !!(aFlags & INIT_FLAG_DISCARDABLE);
// Lock this image's surfaces in the SurfaceCache if we're not discardable.
if (!mDiscardable) {
mLockCount++;
SurfaceCache::LockImage(ImageKey(this));
}
mIsInitialized = true;
return NS_OK;
}
size_t VectorImage::SizeOfSourceWithComputedFallback(
SizeOfState& aState) const {
if (!mSVGDocumentWrapper) {
return 0; // No document, so no memory used for the document.
}
SVGDocument* doc = mSVGDocumentWrapper->GetDocument();
if (!doc) {
return 0; // No document, so no memory used for the document.
}
nsWindowSizes windowSizes(aState);
doc->DocAddSizeOfIncludingThis(windowSizes);
if (windowSizes.getTotalSize() == 0) {
// MallocSizeOf fails on this platform. Because we also use this method for
// determining the size of cache entries, we need to return something
// reasonable here. Unfortunately, there's no way to estimate the document's
// size accurately, so we just use a constant value of 100KB, which will
// generally underestimate the true size.
return 100 * 1024;
}
return windowSizes.getTotalSize();
}
void VectorImage::CollectSizeOfSurfaces(
nsTArray<SurfaceMemoryCounter>& aCounters,
MallocSizeOf aMallocSizeOf) const {
SurfaceCache::CollectSizeOfSurfaces(ImageKey(this), aCounters, aMallocSizeOf);
}
nsresult VectorImage::OnImageDataComplete(nsIRequest* aRequest,
nsISupports* aContext,
nsresult aStatus, bool aLastPart) {
// Call our internal OnStopRequest method, which only talks to our embedded
// SVG document. This won't have any effect on our ProgressTracker.
nsresult finalStatus = OnStopRequest(aRequest, aStatus);
// Give precedence to Necko failure codes.
if (NS_FAILED(aStatus)) {
finalStatus = aStatus;
}
Progress loadProgress = LoadCompleteProgress(aLastPart, mError, finalStatus);
if (mIsFullyLoaded || mError) {
// Our document is loaded, so we're ready to notify now.
mProgressTracker->SyncNotifyProgress(loadProgress);
} else {
// Record our progress so far; we'll actually send the notifications in
// OnSVGDocumentLoaded or OnSVGDocumentError.
mLoadProgress = Some(loadProgress);
}
return finalStatus;
}
nsresult VectorImage::OnImageDataAvailable(nsIRequest* aRequest,
nsISupports* aContext,
nsIInputStream* aInStr,
uint64_t aSourceOffset,
uint32_t aCount) {
return OnDataAvailable(aRequest, aInStr, aSourceOffset, aCount);
}
nsresult VectorImage::StartAnimation() {
if (mError) {
return NS_ERROR_FAILURE;
}
MOZ_ASSERT(ShouldAnimate(), "Should not animate!");
mSVGDocumentWrapper->StartAnimation();
return NS_OK;
}
nsresult VectorImage::StopAnimation() {
nsresult rv = NS_OK;
if (mError) {
rv = NS_ERROR_FAILURE;
} else {
MOZ_ASSERT(mIsFullyLoaded && mHaveAnimations,
"Should not have been animating!");
mSVGDocumentWrapper->StopAnimation();
}
mAnimating = false;
return rv;
}
bool VectorImage::ShouldAnimate() {
return ImageResource::ShouldAnimate() && mIsFullyLoaded && mHaveAnimations;
}
NS_IMETHODIMP_(void)
VectorImage::SetAnimationStartTime(const TimeStamp& aTime) {
// We don't care about animation start time.
}
//------------------------------------------------------------------------------
// imgIContainer methods
//******************************************************************************
NS_IMETHODIMP
VectorImage::GetWidth(int32_t* aWidth) {
if (mError || !mIsFullyLoaded) {
// XXXdholbert Technically we should leave outparam untouched when we
// fail. But since many callers don't check for failure, we set it to 0 on
// failure, for sane/predictable results.
*aWidth = 0;
return NS_ERROR_FAILURE;
}
SVGSVGElement* rootElem = mSVGDocumentWrapper->GetRootSVGElem();
MOZ_ASSERT(rootElem,
"Should have a root SVG elem, since we finished "
"loading without errors");
int32_t rootElemWidth = rootElem->GetIntrinsicWidth();
if (rootElemWidth < 0) {
*aWidth = 0;
return NS_ERROR_FAILURE;
}
*aWidth = rootElemWidth;
return NS_OK;
}
//******************************************************************************
nsresult VectorImage::GetNativeSizes(nsTArray<IntSize>& aNativeSizes) const {
return NS_ERROR_NOT_IMPLEMENTED;
}
//******************************************************************************
size_t VectorImage::GetNativeSizesLength() const { return 0; }
//******************************************************************************
NS_IMETHODIMP_(void)
VectorImage::RequestRefresh(const TimeStamp& aTime) {
if (HadRecentRefresh(aTime)) {
return;
}
PendingAnimationTracker* tracker =
mSVGDocumentWrapper->GetDocument()->GetPendingAnimationTracker();
if (tracker && ShouldAnimate()) {
tracker->TriggerPendingAnimationsOnNextTick(aTime);
}
EvaluateAnimation();
mSVGDocumentWrapper->TickRefreshDriver();
if (mHasPendingInvalidation) {
SendInvalidationNotifications();
}
}
void VectorImage::SendInvalidationNotifications() {
// Animated images don't send out invalidation notifications as soon as
// they're generated. Instead, InvalidateObserversOnNextRefreshDriverTick
// records that there are pending invalidations and then returns immediately.
// The notifications are actually sent from RequestRefresh(). We send these
// notifications there to ensure that there is actually a document observing
// us. Otherwise, the notifications are just wasted effort.
//
// Non-animated images post an event to call this method from
// InvalidateObserversOnNextRefreshDriverTick, because RequestRefresh is never
// called for them. Ordinarily this isn't needed, since we send out
// invalidation notifications in OnSVGDocumentLoaded, but in rare cases the
// SVG document may not be 100% ready to render at that time. In those cases
// we would miss the subsequent invalidations if we didn't send out the
// notifications indirectly in |InvalidateObservers...|.
MOZ_ASSERT(mHasPendingInvalidation);
mHasPendingInvalidation = false;
SurfaceCache::RemoveImage(ImageKey(this));
if (UpdateImageContainer(Nothing())) {
// If we have image containers, that means we probably won't get a Draw call
// from the owner since they are using the container. We must assume all
// invalidations need to be handled.
MOZ_ASSERT(mRenderingObserver, "Should have a rendering observer by now");
mRenderingObserver->ResumeHonoringInvalidations();
}
if (mProgressTracker) {
mProgressTracker->SyncNotifyProgress(FLAG_FRAME_COMPLETE,
GetMaxSizedIntRect());
}
}
NS_IMETHODIMP_(IntRect)
VectorImage::GetImageSpaceInvalidationRect(const IntRect& aRect) {
return aRect;
}
//******************************************************************************
NS_IMETHODIMP
VectorImage::GetHeight(int32_t* aHeight) {
if (mError || !mIsFullyLoaded) {
// XXXdholbert Technically we should leave outparam untouched when we
// fail. But since many callers don't check for failure, we set it to 0 on
// failure, for sane/predictable results.
*aHeight = 0;
return NS_ERROR_FAILURE;
}
SVGSVGElement* rootElem = mSVGDocumentWrapper->GetRootSVGElem();
MOZ_ASSERT(rootElem,
"Should have a root SVG elem, since we finished "
"loading without errors");
int32_t rootElemHeight = rootElem->GetIntrinsicHeight();
if (rootElemHeight < 0) {
*aHeight = 0;
return NS_ERROR_FAILURE;
}
*aHeight = rootElemHeight;
return NS_OK;
}
//******************************************************************************
NS_IMETHODIMP
VectorImage::GetIntrinsicSize(nsSize* aSize) {
if (mError || !mIsFullyLoaded) {
return NS_ERROR_FAILURE;
}
nsIFrame* rootFrame = mSVGDocumentWrapper->GetRootLayoutFrame();
if (!rootFrame) {
return NS_ERROR_FAILURE;
}
*aSize = nsSize(-1, -1);
IntrinsicSize rfSize = rootFrame->GetIntrinsicSize();
if (rfSize.width) {
aSize->width = *rfSize.width;
}
if (rfSize.height) {
aSize->height = *rfSize.height;
}
return NS_OK;
}
//******************************************************************************
NS_IMETHODIMP
VectorImage::GetIntrinsicRatio(nsSize* aRatio) {
if (mError || !mIsFullyLoaded) {
return NS_ERROR_FAILURE;
}
nsIFrame* rootFrame = mSVGDocumentWrapper->GetRootLayoutFrame();
if (!rootFrame) {
return NS_ERROR_FAILURE;
}
*aRatio = rootFrame->GetIntrinsicRatio();
return NS_OK;
}
NS_IMETHODIMP_(Orientation)
VectorImage::GetOrientation() { return Orientation(); }
//******************************************************************************
NS_IMETHODIMP
VectorImage::GetType(uint16_t* aType) {
NS_ENSURE_ARG_POINTER(aType);
*aType = imgIContainer::TYPE_VECTOR;
return NS_OK;
}
//******************************************************************************
NS_IMETHODIMP
VectorImage::GetProducerId(uint32_t* aId) {
NS_ENSURE_ARG_POINTER(aId);
*aId = ImageResource::GetImageProducerId();
return NS_OK;
}
//******************************************************************************
NS_IMETHODIMP
VectorImage::GetAnimated(bool* aAnimated) {
if (mError || !mIsFullyLoaded) {
return NS_ERROR_FAILURE;
}
*aAnimated = mSVGDocumentWrapper->IsAnimated();
return NS_OK;
}
//******************************************************************************
int32_t VectorImage::GetFirstFrameDelay() {
if (mError) {
return -1;
}
if (!mSVGDocumentWrapper->IsAnimated()) {
return -1;
}
// We don't really have a frame delay, so just pretend that we constantly
// need updates.
return 0;
}
NS_IMETHODIMP_(bool)
VectorImage::WillDrawOpaqueNow() {
return false; // In general, SVG content is not opaque.
}
//******************************************************************************
NS_IMETHODIMP_(already_AddRefed<SourceSurface>)
VectorImage::GetFrame(uint32_t aWhichFrame, uint32_t aFlags) {
if (mError) {
return nullptr;
}
// Look up height & width
// ----------------------
SVGSVGElement* svgElem = mSVGDocumentWrapper->GetRootSVGElem();
MOZ_ASSERT(svgElem,
"Should have a root SVG elem, since we finished "
"loading without errors");
nsIntSize imageIntSize(svgElem->GetIntrinsicWidth(),
svgElem->GetIntrinsicHeight());
if (imageIntSize.IsEmpty()) {
// We'll get here if our SVG doc has a percent-valued or negative width or
// height.
return nullptr;
}
return GetFrameAtSize(imageIntSize, aWhichFrame, aFlags);
}
NS_IMETHODIMP_(already_AddRefed<SourceSurface>)
VectorImage::GetFrameAtSize(const IntSize& aSize, uint32_t aWhichFrame,
uint32_t aFlags) {
#ifdef DEBUG
NotifyDrawingObservers();
#endif
auto result = GetFrameInternal(aSize, Nothing(), aWhichFrame, aFlags);
return Get<2>(result).forget();
}
Tuple<ImgDrawResult, IntSize, RefPtr<SourceSurface>>
VectorImage::GetFrameInternal(const IntSize& aSize,
const Maybe<SVGImageContext>& aSVGContext,
uint32_t aWhichFrame, uint32_t aFlags) {
MOZ_ASSERT(aWhichFrame <= FRAME_MAX_VALUE);
if (aSize.IsEmpty() || aWhichFrame > FRAME_MAX_VALUE) {
return MakeTuple(ImgDrawResult::BAD_ARGS, aSize, RefPtr<SourceSurface>());
}
if (mError) {
return MakeTuple(ImgDrawResult::BAD_IMAGE, aSize, RefPtr<SourceSurface>());
}
if (!mIsFullyLoaded) {
return MakeTuple(ImgDrawResult::NOT_READY, aSize, RefPtr<SourceSurface>());
}
RefPtr<SourceSurface> sourceSurface;
IntSize decodeSize;
Tie(sourceSurface, decodeSize) =
LookupCachedSurface(aSize, aSVGContext, aFlags);
if (sourceSurface) {
return MakeTuple(ImgDrawResult::SUCCESS, decodeSize,
std::move(sourceSurface));
}
if (mIsDrawing) {
NS_WARNING("Refusing to make re-entrant call to VectorImage::Draw");
return MakeTuple(ImgDrawResult::TEMPORARY_ERROR, decodeSize,
RefPtr<SourceSurface>());
}
// By using a null gfxContext, we ensure that we will always attempt to
// create a surface, even if we aren't capable of caching it (e.g. due to our
// flags, having an animation, etc). Otherwise CreateSurface will assume that
// the caller is capable of drawing directly to its own draw target if we
// cannot cache.
SVGDrawingParameters params(
nullptr, decodeSize, aSize, ImageRegion::Create(decodeSize),
SamplingFilter::POINT, aSVGContext,
mSVGDocumentWrapper->GetCurrentTimeAsFloat(), aFlags, 1.0);
bool didCache; // Was the surface put into the cache?
bool contextPaint = aSVGContext && aSVGContext->GetContextPaint();
AutoRestoreSVGState autoRestore(params, mSVGDocumentWrapper, mIsDrawing,
contextPaint);
RefPtr<gfxDrawable> svgDrawable = CreateSVGDrawable(params);
RefPtr<SourceSurface> surface = CreateSurface(params, svgDrawable, didCache);
if (!surface) {
MOZ_ASSERT(!didCache);
return MakeTuple(ImgDrawResult::TEMPORARY_ERROR, decodeSize,
RefPtr<SourceSurface>());
}
SendFrameComplete(didCache, params.flags);
return MakeTuple(ImgDrawResult::SUCCESS, decodeSize, std::move(surface));
}
//******************************************************************************
Tuple<ImgDrawResult, IntSize> VectorImage::GetImageContainerSize(
LayerManager* aManager, const IntSize& aSize, uint32_t aFlags) {
if (mError) {
return MakeTuple(ImgDrawResult::BAD_IMAGE, IntSize(0, 0));
}
if (!mIsFullyLoaded) {
return MakeTuple(ImgDrawResult::NOT_READY, IntSize(0, 0));
}
if (mHaveAnimations ||
aManager->GetBackendType() != LayersBackend::LAYERS_WR) {
return MakeTuple(ImgDrawResult::NOT_SUPPORTED, IntSize(0, 0));
}
// We don't need to check if the size is too big since we only support
// WebRender backends.
if (aSize.IsEmpty()) {
return MakeTuple(ImgDrawResult::BAD_ARGS, IntSize(0, 0));
}
return MakeTuple(ImgDrawResult::SUCCESS, aSize);
}
NS_IMETHODIMP_(bool)
VectorImage::IsImageContainerAvailable(LayerManager* aManager,
uint32_t aFlags) {
if (mError || !mIsFullyLoaded || mHaveAnimations ||
aManager->GetBackendType() != LayersBackend::LAYERS_WR) {
return false;
}
return true;
}
//******************************************************************************
NS_IMETHODIMP_(already_AddRefed<ImageContainer>)
VectorImage::GetImageContainer(LayerManager* aManager, uint32_t aFlags) {
MOZ_ASSERT(aManager->GetBackendType() != LayersBackend::LAYERS_WR,
"WebRender should always use GetImageContainerAvailableAtSize!");
return nullptr;
}
//******************************************************************************
NS_IMETHODIMP_(bool)
VectorImage::IsImageContainerAvailableAtSize(LayerManager* aManager,
const IntSize& aSize,
uint32_t aFlags) {
// Since we only support image containers with WebRender, and it can handle
// textures larger than the hw max texture size, we don't need to check aSize.
return !aSize.IsEmpty() && IsImageContainerAvailable(aManager, aFlags);
}
//******************************************************************************
NS_IMETHODIMP_(ImgDrawResult)
VectorImage::GetImageContainerAtSize(layers::LayerManager* aManager,
const gfx::IntSize& aSize,
const Maybe<SVGImageContext>& aSVGContext,
uint32_t aFlags,
layers::ImageContainer** aOutContainer) {
Maybe<SVGImageContext> newSVGContext;
MaybeRestrictSVGContext(newSVGContext, aSVGContext, aFlags);
// The aspect ratio flag was already handled as part of the SVG context
// restriction above.
uint32_t flags = aFlags & ~(FLAG_FORCE_PRESERVEASPECTRATIO_NONE);
return GetImageContainerImpl(aManager, aSize,
newSVGContext ? newSVGContext : aSVGContext,
flags, aOutContainer);
}
bool VectorImage::MaybeRestrictSVGContext(
Maybe<SVGImageContext>& aNewSVGContext,
const Maybe<SVGImageContext>& aSVGContext, uint32_t aFlags) {
bool overridePAR =
(aFlags & FLAG_FORCE_PRESERVEASPECTRATIO_NONE) && aSVGContext;
bool haveContextPaint = aSVGContext && aSVGContext->GetContextPaint();
bool blockContextPaint = false;
if (haveContextPaint) {
blockContextPaint = !SVGContextPaint::IsAllowedForImageFromURI(mURI);
}
if (overridePAR || blockContextPaint) {
// The key that we create for the image surface cache must match the way
// that the image will be painted, so we need to initialize a new matching
// SVGImageContext here in order to generate the correct key.
aNewSVGContext = aSVGContext; // copy
if (overridePAR) {
// The SVGImageContext must take account of the preserveAspectRatio
// overide:
MOZ_ASSERT(!aSVGContext->GetPreserveAspectRatio(),
"FLAG_FORCE_PRESERVEASPECTRATIO_NONE is not expected if a "
"preserveAspectRatio override is supplied");
Maybe<SVGPreserveAspectRatio> aspectRatio = Some(SVGPreserveAspectRatio(
SVG_PRESERVEASPECTRATIO_NONE, SVG_MEETORSLICE_UNKNOWN));
aNewSVGContext->SetPreserveAspectRatio(aspectRatio);
}
if (blockContextPaint) {
// The SVGImageContext must not include context paint if the image is
// not allowed to use it:
aNewSVGContext->ClearContextPaint();
}
}
return haveContextPaint && !blockContextPaint;
}
//******************************************************************************
NS_IMETHODIMP_(ImgDrawResult)
VectorImage::Draw(gfxContext* aContext, const nsIntSize& aSize,
const ImageRegion& aRegion, uint32_t aWhichFrame,
SamplingFilter aSamplingFilter,
const Maybe<SVGImageContext>& aSVGContext, uint32_t aFlags,
float aOpacity) {
if (aWhichFrame > FRAME_MAX_VALUE) {
return ImgDrawResult::BAD_ARGS;
}
if (!aContext) {
return ImgDrawResult::BAD_ARGS;
}
if (mError) {
return ImgDrawResult::BAD_IMAGE;
}
if (!mIsFullyLoaded) {
return ImgDrawResult::NOT_READY;
}
if (mAnimationConsumers == 0) {
SendOnUnlockedDraw(aFlags);
}
// We should bypass the cache when:
// - We are using a DrawTargetRecording because we prefer the drawing commands
// in general to the rasterized surface. This allows blob images to avoid
// rasterized SVGs with WebRender.
// - The size exceeds what we are willing to cache as a rasterized surface.
// We don't do this for WebRender because the performance of the fallback
// path is quite bad and upscaling the SVG from the clamped size is better
// than bringing the browser to a crawl.
if (aContext->GetDrawTarget()->GetBackendType() == BackendType::RECORDING ||
(!gfxVars::UseWebRender() &&
aSize != SurfaceCache::ClampVectorSize(aSize))) {
aFlags |= FLAG_BYPASS_SURFACE_CACHE;
}
MOZ_ASSERT(!(aFlags & FLAG_FORCE_PRESERVEASPECTRATIO_NONE) ||
(aSVGContext && aSVGContext->GetViewportSize()),
"Viewport size is required when using "
"FLAG_FORCE_PRESERVEASPECTRATIO_NONE");
float animTime = (aWhichFrame == FRAME_FIRST)
? 0.0f
: mSVGDocumentWrapper->GetCurrentTimeAsFloat();
Maybe<SVGImageContext> newSVGContext;
bool contextPaint =
MaybeRestrictSVGContext(newSVGContext, aSVGContext, aFlags);
SVGDrawingParameters params(aContext, aSize, aSize, aRegion, aSamplingFilter,
newSVGContext ? newSVGContext : aSVGContext,
animTime, aFlags, aOpacity);
// If we have an prerasterized version of this image that matches the
// drawing parameters, use that.
RefPtr<SourceSurface> sourceSurface;
Tie(sourceSurface, params.size) =
LookupCachedSurface(aSize, params.svgContext, aFlags);
if (sourceSurface) {
RefPtr<gfxDrawable> drawable =
new gfxSurfaceDrawable(sourceSurface, params.size);
Show(drawable, params);
return ImgDrawResult::SUCCESS;
}
// else, we need to paint the image:
if (mIsDrawing) {
NS_WARNING("Refusing to make re-entrant call to VectorImage::Draw");
return ImgDrawResult::TEMPORARY_ERROR;
}
AutoRestoreSVGState autoRestore(params, mSVGDocumentWrapper, mIsDrawing,
contextPaint);
bool didCache; // Was the surface put into the cache?
RefPtr<gfxDrawable> svgDrawable = CreateSVGDrawable(params);
sourceSurface = CreateSurface(params, svgDrawable, didCache);
if (!sourceSurface) {
MOZ_ASSERT(!didCache);
Show(svgDrawable, params);
return ImgDrawResult::SUCCESS;