gecko-dev/layout/svg/nsSVGImageFrame.h

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