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[gecko.git] / image / AutoRestoreSVGState.h
blobc01c2f612b2719255d69460f7d005e26c28f0347
1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
2 /* This Source Code Form is subject to the terms of the Mozilla Public
3 * License, v. 2.0. If a copy of the MPL was not distributed with this
4 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
6 #ifndef mozilla_image_AutoRestoreSVGState_h
7 #define mozilla_image_AutoRestoreSVGState_h
9 #include "mozilla/Attributes.h"
10 #include "mozilla/AutoRestore.h"
11 #include "mozilla/SVGContextPaint.h"
12 #include "mozilla/dom/SVGSVGElement.h"
13 #include "nsPresContext.h"
14 #include "SVGDrawingParameters.h"
15 #include "SVGDocumentWrapper.h"
16 #include "mozilla/dom/DocumentInlines.h"
17 #include "mozilla/dom/SVGDocument.h"
18 #include "mozilla/dom/BrowsingContextBinding.h"
20 namespace mozilla::image {
22 class MOZ_STACK_CLASS AutoRestoreSVGState final {
23 public:
24 AutoRestoreSVGState(const SVGDrawingParameters& aParams,
25 SVGDocumentWrapper* aSVGDocumentWrapper,
26 bool aContextPaint)
27 : AutoRestoreSVGState(aParams.svgContext, aParams.animationTime,
28 aSVGDocumentWrapper, aContextPaint) {}
30 AutoRestoreSVGState(const SVGImageContext& aSVGContext, float aAnimationTime,
31 SVGDocumentWrapper* aSVGDocumentWrapper,
32 bool aContextPaint)
33 : mIsDrawing(aSVGDocumentWrapper->mIsDrawing),
34 // Apply any 'preserveAspectRatio' override (if specified) to the root
35 // element:
36 mPAR(aSVGContext, aSVGDocumentWrapper->GetRootSVGElem()),
37 // Set the animation time:
38 mTime(aSVGDocumentWrapper->GetRootSVGElem(), aAnimationTime) {
39 MOZ_ASSERT(!mIsDrawing.SavedValue());
40 MOZ_ASSERT(aSVGDocumentWrapper->GetDocument());
42 if (auto* pc = aSVGDocumentWrapper->GetDocument()->GetPresContext()) {
43 pc->SetColorSchemeOverride([&] {
44 if (auto scheme = aSVGContext.GetColorScheme()) {
45 return *scheme == ColorScheme::Light
46 ? dom::PrefersColorSchemeOverride::Light
47 : dom::PrefersColorSchemeOverride::Dark;
49 return dom::PrefersColorSchemeOverride::None;
50 }());
53 aSVGDocumentWrapper->mIsDrawing = true;
55 // Set context paint (if specified) on the document:
56 if (aContextPaint) {
57 MOZ_ASSERT(aSVGContext.GetContextPaint());
58 mContextPaint.emplace(aSVGContext.GetContextPaint(),
59 aSVGDocumentWrapper->GetDocument());
63 private:
64 AutoRestore<bool> mIsDrawing;
65 AutoPreserveAspectRatioOverride mPAR;
66 AutoSVGTimeSetRestore mTime;
67 Maybe<AutoSetRestoreSVGContextPaint> mContextPaint;
70 } // namespace mozilla::image
72 #endif // mozilla_image_AutoRestoreSVGState_h