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/* -*- 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/. */
#ifndef mozilla_image_AutoRestoreSVGState_h
#define mozilla_image_AutoRestoreSVGState_h
#include "mozilla/Attributes.h"
#include "mozilla/AutoRestore.h"
#include "mozilla/SVGContextPaint.h"
#include "mozilla/dom/SVGSVGElement.h"
#include "nsPresContext.h"
#include "SVGDrawingParameters.h"
#include "SVGDocumentWrapper.h"
#include "mozilla/dom/DocumentInlines.h"
#include "mozilla/dom/SVGDocument.h"
#include "mozilla/dom/BrowsingContextBinding.h"
namespace mozilla::image {
class MOZ_STACK_CLASS AutoRestoreSVGState final {
public:
AutoRestoreSVGState(const SVGDrawingParameters& aParams,
SVGDocumentWrapper* aSVGDocumentWrapper,
bool aContextPaint)
: AutoRestoreSVGState(aParams.svgContext, aParams.animationTime,
aSVGDocumentWrapper, aContextPaint) {}
AutoRestoreSVGState(const SVGImageContext& aSVGContext, float aAnimationTime,
SVGDocumentWrapper* aSVGDocumentWrapper,
bool aContextPaint)
: mIsDrawing(aSVGDocumentWrapper->mIsDrawing),
// Apply any 'preserveAspectRatio' override (if specified) to the root
// element:
mPAR(aSVGContext, aSVGDocumentWrapper->GetRootSVGElem()),
// Set the animation time:
mTime(aSVGDocumentWrapper->GetRootSVGElem(), aAnimationTime) {
MOZ_ASSERT(!mIsDrawing.SavedValue());
MOZ_ASSERT(aSVGDocumentWrapper->GetDocument());
if (auto* pc = aSVGDocumentWrapper->GetDocument()->GetPresContext()) {
pc->SetColorSchemeOverride([&] {
if (auto scheme = aSVGContext.GetColorScheme()) {
return *scheme == ColorScheme::Light
? dom::PrefersColorSchemeOverride::Light
: dom::PrefersColorSchemeOverride::Dark;
}
return dom::PrefersColorSchemeOverride::None;
}());
}
aSVGDocumentWrapper->mIsDrawing = true;
// Set context paint (if specified) on the document:
if (aContextPaint) {
MOZ_ASSERT(aSVGContext.GetContextPaint());
mContextPaint.emplace(aSVGContext.GetContextPaint(),
aSVGDocumentWrapper->GetDocument());
}
}
private:
AutoRestore<bool> mIsDrawing;
AutoPreserveAspectRatioOverride mPAR;
AutoSVGTimeSetRestore mTime;
Maybe<AutoSetRestoreSVGContextPaint> mContextPaint;
};
} // namespace mozilla::image
#endif // mozilla_image_AutoRestoreSVGState_h
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