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2b86f97bbe
Supplying a visibility rect to the display list builder when recording an SVG image blob will allow the display list builder to trim out unnecessary items and make the recordings smaller. This is particularly important when we have an SVG image used as an atlas. This patch also simplifies the call path for the recordings. This allows us to avoid unnecessary clips and transforms and shrink the recording further, as well as make the code more auditable. Differential Revision: https://phabricator.services.mozilla.com/D122125
63 lines
2.2 KiB
C++
63 lines
2.2 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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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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#ifndef mozilla_image_AutoRestoreSVGState_h
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#define mozilla_image_AutoRestoreSVGState_h
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#include "mozilla/Attributes.h"
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#include "mozilla/AutoRestore.h"
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#include "mozilla/SVGContextPaint.h"
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#include "mozilla/dom/SVGSVGElement.h"
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#include "SVGDrawingParameters.h"
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#include "SVGDocumentWrapper.h"
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namespace mozilla {
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namespace image {
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class MOZ_STACK_CLASS AutoRestoreSVGState final {
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public:
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AutoRestoreSVGState(const SVGDrawingParameters& aParams,
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SVGDocumentWrapper* aSVGDocumentWrapper,
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bool aContextPaint)
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: AutoRestoreSVGState(aParams.svgContext, aParams.animationTime,
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aSVGDocumentWrapper, aContextPaint) {}
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AutoRestoreSVGState(const Maybe<SVGImageContext>& aSVGContext,
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float aAnimationTime,
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SVGDocumentWrapper* aSVGDocumentWrapper,
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bool aContextPaint)
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: mIsDrawing(aSVGDocumentWrapper->mIsDrawing)
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// Apply any 'preserveAspectRatio' override (if specified) to the root
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// element:
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,
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mPAR(aSVGContext, aSVGDocumentWrapper->GetRootSVGElem())
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// Set the animation time:
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,
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mTime(aSVGDocumentWrapper->GetRootSVGElem(), aAnimationTime) {
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MOZ_ASSERT(!mIsDrawing.SavedValue());
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MOZ_ASSERT(aSVGDocumentWrapper->GetDocument());
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aSVGDocumentWrapper->mIsDrawing = true;
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// Set context paint (if specified) on the document:
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if (aContextPaint) {
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MOZ_ASSERT(aSVGContext->GetContextPaint());
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mContextPaint.emplace(*aSVGContext->GetContextPaint(),
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*aSVGDocumentWrapper->GetDocument());
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}
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}
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private:
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AutoRestore<bool> mIsDrawing;
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AutoPreserveAspectRatioOverride mPAR;
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AutoSVGTimeSetRestore mTime;
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Maybe<AutoSetRestoreSVGContextPaint> mContextPaint;
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};
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} // namespace image
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} // namespace mozilla
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#endif // mozilla_image_AutoRestoreSVGState_h
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