зеркало из https://github.com/mozilla/gecko-dev.git
125 строки
3.9 KiB
C++
125 строки
3.9 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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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 __NS_SVGIMAGEFRAME_H__
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#define __NS_SVGIMAGEFRAME_H__
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// Keep in (case-insensitive) order:
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#include "gfxContext.h"
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#include "gfxPlatform.h"
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#include "mozilla/gfx/2D.h"
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#include "imgIContainer.h"
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#include "nsContainerFrame.h"
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#include "nsIImageLoadingContent.h"
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#include "nsLayoutUtils.h"
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#include "imgINotificationObserver.h"
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#include "SVGObserverUtils.h"
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#include "nsSVGUtils.h"
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#include "SVGContentUtils.h"
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#include "SVGGeometryFrame.h"
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#include "SVGImageContext.h"
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#include "mozilla/dom/SVGImageElement.h"
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#include "nsIReflowCallback.h"
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#include "mozilla/Unused.h"
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class nsSVGImageFrame;
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namespace mozilla {
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class PresShell;
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} // namespace mozilla
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class nsSVGImageListener final : public imgINotificationObserver {
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public:
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explicit nsSVGImageListener(nsSVGImageFrame* aFrame);
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NS_DECL_ISUPPORTS
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NS_DECL_IMGINOTIFICATIONOBSERVER
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void SetFrame(nsSVGImageFrame* frame) { mFrame = frame; }
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private:
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~nsSVGImageListener() = default;
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nsSVGImageFrame* mFrame;
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};
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class nsSVGImageFrame final : public mozilla::SVGGeometryFrame,
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public nsIReflowCallback {
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friend nsIFrame* NS_NewSVGImageFrame(mozilla::PresShell* aPresShell,
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ComputedStyle* aStyle);
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protected:
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explicit nsSVGImageFrame(ComputedStyle* aStyle, nsPresContext* aPresContext)
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: SVGGeometryFrame(aStyle, aPresContext, kClassID),
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mReflowCallbackPosted(false),
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mForceSyncDecoding(false) {
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EnableVisibilityTracking();
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}
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virtual ~nsSVGImageFrame();
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public:
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NS_DECL_QUERYFRAME
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NS_DECL_FRAMEARENA_HELPERS(nsSVGImageFrame)
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// nsSVGDisplayableFrame interface:
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virtual void PaintSVG(gfxContext& aContext, const gfxMatrix& aTransform,
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imgDrawingParams& aImgParams,
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const nsIntRect* aDirtyRect = nullptr) override;
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virtual nsIFrame* GetFrameForPoint(const gfxPoint& aPoint) override;
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virtual void ReflowSVG() override;
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// SVGGeometryFrame methods:
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virtual uint16_t GetHitTestFlags() override;
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// nsIFrame interface:
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virtual nsresult AttributeChanged(int32_t aNameSpaceID, nsAtom* aAttribute,
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int32_t aModType) override;
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void OnVisibilityChange(
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Visibility aNewVisibility,
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const Maybe<OnNonvisible>& aNonvisibleAction = Nothing()) override;
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virtual void Init(nsIContent* aContent, nsContainerFrame* aParent,
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nsIFrame* aPrevInFlow) override;
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virtual void DestroyFrom(nsIFrame* aDestructRoot,
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PostDestroyData& aPostDestroyData) override;
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bool GetIntrinsicImageDimensions(mozilla::gfx::Size& aSize,
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mozilla::AspectRatio& aAspectRatio) const;
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#ifdef DEBUG_FRAME_DUMP
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virtual nsresult GetFrameName(nsAString& aResult) const override {
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return MakeFrameName(NS_LITERAL_STRING("SVGImage"), aResult);
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}
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#endif
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// nsIReflowCallback
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virtual bool ReflowFinished() override;
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virtual void ReflowCallbackCanceled() override;
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/// Always sync decode our image when painting if @aForce is true.
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void SetForceSyncDecoding(bool aForce) { mForceSyncDecoding = aForce; }
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private:
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mozilla::gfx::Matrix GetRasterImageTransform(int32_t aNativeWidth,
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int32_t aNativeHeight);
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mozilla::gfx::Matrix GetVectorImageTransform();
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bool TransformContextForPainting(gfxContext* aGfxContext,
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const gfxMatrix& aTransform);
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nsCOMPtr<imgINotificationObserver> mListener;
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nsCOMPtr<imgIContainer> mImageContainer;
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bool mReflowCallbackPosted;
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bool mForceSyncDecoding;
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friend class nsSVGImageListener;
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};
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#endif // __NS_SVGIMAGEFRAME_H__
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