forked from mirrors/gecko-dev
a43cae175a
This patch adds the struct as a parameter to various functions. The struct is cached in ReflowInput so that we don't need to pass it down to the internal method where nsIFrame::ComputeSize() is called. In the subsequent patches, we'll use it to revise the implementation of flex container's flex base size resolution, and size overrides. Differential Revision: https://phabricator.services.mozilla.com/D101793
495 lines
16 KiB
C++
495 lines
16 KiB
C++
/* -*- 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/. */
|
|
|
|
/* rendering object for replaced elements with image data */
|
|
|
|
#ifndef nsImageFrame_h___
|
|
#define nsImageFrame_h___
|
|
|
|
#include "nsAtomicContainerFrame.h"
|
|
#include "nsIObserver.h"
|
|
|
|
#include "imgINotificationObserver.h"
|
|
|
|
#include "nsDisplayList.h"
|
|
#include "imgIContainer.h"
|
|
#include "mozilla/Attributes.h"
|
|
#include "mozilla/DebugOnly.h"
|
|
#include "mozilla/StaticPtr.h"
|
|
#include "nsIReflowCallback.h"
|
|
#include "nsTObserverArray.h"
|
|
|
|
class nsFontMetrics;
|
|
class nsImageMap;
|
|
class nsIURI;
|
|
class nsILoadGroup;
|
|
class nsDisplayImage;
|
|
class nsPresContext;
|
|
class nsImageFrame;
|
|
class nsTransform2D;
|
|
class nsImageLoadingContent;
|
|
|
|
namespace mozilla {
|
|
class PresShell;
|
|
namespace layers {
|
|
class ImageContainer;
|
|
class ImageLayer;
|
|
class LayerManager;
|
|
} // namespace layers
|
|
} // namespace mozilla
|
|
|
|
class nsImageListener final : public imgINotificationObserver {
|
|
protected:
|
|
virtual ~nsImageListener();
|
|
|
|
public:
|
|
explicit nsImageListener(nsImageFrame* aFrame);
|
|
|
|
NS_DECL_ISUPPORTS
|
|
NS_DECL_IMGINOTIFICATIONOBSERVER
|
|
|
|
void SetFrame(nsImageFrame* frame) { mFrame = frame; }
|
|
|
|
private:
|
|
nsImageFrame* mFrame;
|
|
};
|
|
|
|
class nsImageFrame : public nsAtomicContainerFrame, public nsIReflowCallback {
|
|
public:
|
|
template <typename T>
|
|
using Maybe = mozilla::Maybe<T>;
|
|
using Nothing = mozilla::Nothing;
|
|
using Visibility = mozilla::Visibility;
|
|
|
|
typedef mozilla::image::ImgDrawResult ImgDrawResult;
|
|
typedef mozilla::layers::ImageContainer ImageContainer;
|
|
typedef mozilla::layers::ImageLayer ImageLayer;
|
|
typedef mozilla::layers::LayerManager LayerManager;
|
|
|
|
NS_DECL_FRAMEARENA_HELPERS(nsImageFrame)
|
|
NS_DECL_QUERYFRAME
|
|
|
|
void DestroyFrom(nsIFrame* aDestructRoot, PostDestroyData&) override;
|
|
void DidSetComputedStyle(ComputedStyle* aOldStyle) final;
|
|
|
|
void Init(nsIContent* aContent, nsContainerFrame* aParent,
|
|
nsIFrame* aPrevInFlow) override;
|
|
void BuildDisplayList(nsDisplayListBuilder*, const nsDisplayListSet&) final;
|
|
nscoord GetMinISize(gfxContext* aRenderingContext) final;
|
|
nscoord GetPrefISize(gfxContext* aRenderingContext) final;
|
|
mozilla::IntrinsicSize GetIntrinsicSize() final { return mIntrinsicSize; }
|
|
mozilla::AspectRatio GetIntrinsicRatio() const final {
|
|
return mIntrinsicRatio;
|
|
}
|
|
void Reflow(nsPresContext*, ReflowOutput&, const ReflowInput&,
|
|
nsReflowStatus&) override;
|
|
|
|
nsresult GetContentForEvent(mozilla::WidgetEvent*,
|
|
nsIContent** aContent) final;
|
|
nsresult HandleEvent(nsPresContext*, mozilla::WidgetGUIEvent*,
|
|
nsEventStatus*) override;
|
|
mozilla::Maybe<Cursor> GetCursor(const nsPoint&) override;
|
|
nsresult AttributeChanged(int32_t aNameSpaceID, nsAtom* aAttribute,
|
|
int32_t aModType) final;
|
|
|
|
void OnVisibilityChange(
|
|
Visibility aNewVisibility,
|
|
const Maybe<OnNonvisible>& aNonvisibleAction = Nothing()) final;
|
|
|
|
void ResponsiveContentDensityChanged();
|
|
void SetupForContentURLRequest();
|
|
bool ShouldShowBrokenImageIcon() const;
|
|
|
|
#ifdef ACCESSIBILITY
|
|
mozilla::a11y::AccType AccessibleType() override;
|
|
#endif
|
|
|
|
bool IsFrameOfType(uint32_t aFlags) const final {
|
|
return nsAtomicContainerFrame::IsFrameOfType(
|
|
aFlags & ~(nsIFrame::eReplaced | nsIFrame::eReplacedSizing));
|
|
}
|
|
|
|
#ifdef DEBUG_FRAME_DUMP
|
|
nsresult GetFrameName(nsAString& aResult) const override;
|
|
void List(FILE* out = stderr, const char* aPrefix = "",
|
|
ListFlags aFlags = ListFlags()) const final;
|
|
#endif
|
|
|
|
LogicalSides GetLogicalSkipSides() const final;
|
|
|
|
static void ReleaseGlobals() {
|
|
if (gIconLoad) {
|
|
gIconLoad->Shutdown();
|
|
gIconLoad = nullptr;
|
|
}
|
|
}
|
|
|
|
nsresult RestartAnimation();
|
|
nsresult StopAnimation();
|
|
|
|
already_AddRefed<imgIRequest> GetCurrentRequest() const;
|
|
void Notify(imgIRequest*, int32_t aType, const nsIntRect* aData);
|
|
|
|
/**
|
|
* Function to test whether given an element and its style, that element
|
|
* should get an image frame. Note that this method is only used by the
|
|
* frame constructor; it's only here because it uses gIconLoad for now.
|
|
*/
|
|
static bool ShouldCreateImageFrameFor(const mozilla::dom::Element&,
|
|
ComputedStyle&);
|
|
|
|
ImgDrawResult DisplayAltFeedback(gfxContext& aRenderingContext,
|
|
const nsRect& aDirtyRect, nsPoint aPt,
|
|
uint32_t aFlags);
|
|
|
|
ImgDrawResult DisplayAltFeedbackWithoutLayer(
|
|
nsDisplayItem*, mozilla::wr::DisplayListBuilder&,
|
|
mozilla::wr::IpcResourceUpdateQueue&,
|
|
const mozilla::layers::StackingContextHelper&,
|
|
mozilla::layers::RenderRootStateManager*, nsDisplayListBuilder*,
|
|
nsPoint aPt, uint32_t aFlags);
|
|
|
|
nsRect GetInnerArea() const;
|
|
|
|
/**
|
|
* Return a map element associated with this image.
|
|
*/
|
|
mozilla::dom::Element* GetMapElement() const;
|
|
|
|
/**
|
|
* Return true if the image has associated image map.
|
|
*/
|
|
bool HasImageMap() const { return mImageMap || GetMapElement(); }
|
|
|
|
nsImageMap* GetImageMap();
|
|
nsImageMap* GetExistingImageMap() const { return mImageMap; }
|
|
|
|
void AddInlineMinISize(gfxContext* aRenderingContext,
|
|
InlineMinISizeData* aData) final;
|
|
|
|
void DisconnectMap();
|
|
|
|
// nsIReflowCallback
|
|
bool ReflowFinished() final;
|
|
void ReflowCallbackCanceled() final;
|
|
|
|
// The kind of image frame we are.
|
|
enum class Kind : uint8_t {
|
|
// For an nsImageLoadingContent.
|
|
ImageElement,
|
|
// For css 'content: url(..)' on non-generated content.
|
|
ContentProperty,
|
|
// For a child of a ::before / ::after pseudo-element that had an url() item
|
|
// for the content property.
|
|
ContentPropertyAtIndex,
|
|
};
|
|
|
|
// Creates a suitable continuing frame for this frame.
|
|
nsImageFrame* CreateContinuingFrame(mozilla::PresShell*,
|
|
ComputedStyle*) const;
|
|
|
|
private:
|
|
friend nsIFrame* NS_NewImageFrame(mozilla::PresShell*, ComputedStyle*);
|
|
friend nsIFrame* NS_NewImageFrameForContentProperty(mozilla::PresShell*,
|
|
ComputedStyle*);
|
|
friend nsIFrame* NS_NewImageFrameForGeneratedContentIndex(mozilla::PresShell*,
|
|
ComputedStyle*);
|
|
|
|
nsImageFrame(ComputedStyle* aStyle, nsPresContext* aPresContext, Kind aKind)
|
|
: nsImageFrame(aStyle, aPresContext, kClassID, aKind) {}
|
|
|
|
nsImageFrame(ComputedStyle*, nsPresContext* aPresContext, ClassID, Kind);
|
|
|
|
protected:
|
|
nsImageFrame(ComputedStyle* aStyle, nsPresContext* aPresContext, ClassID aID)
|
|
: nsImageFrame(aStyle, aPresContext, aID, Kind::ImageElement) {}
|
|
|
|
~nsImageFrame() override;
|
|
|
|
void EnsureIntrinsicSizeAndRatio();
|
|
|
|
bool GotInitialReflow() const {
|
|
return !HasAnyStateBits(NS_FRAME_FIRST_REFLOW);
|
|
}
|
|
|
|
SizeComputationResult ComputeSize(
|
|
gfxContext* aRenderingContext, mozilla::WritingMode aWM,
|
|
const mozilla::LogicalSize& aCBSize, nscoord aAvailableISize,
|
|
const mozilla::LogicalSize& aMargin,
|
|
const mozilla::LogicalSize& aBorderPadding,
|
|
const mozilla::StyleSizeOverrides& aSizeOverrides,
|
|
mozilla::ComputeSizeFlags aFlags) final;
|
|
|
|
bool IsServerImageMap();
|
|
|
|
void TranslateEventCoords(const nsPoint& aPoint, nsIntPoint& aResult);
|
|
|
|
bool GetAnchorHREFTargetAndNode(nsIURI** aHref, nsString& aTarget,
|
|
nsIContent** aNode);
|
|
/**
|
|
* Computes the width of the string that fits into the available space
|
|
*
|
|
* @param in aLength total length of the string in PRUnichars
|
|
* @param in aMaxWidth width not to be exceeded
|
|
* @param out aMaxFit length of the string that fits within aMaxWidth
|
|
* in PRUnichars
|
|
* @return width of the string that fits within aMaxWidth
|
|
*/
|
|
nscoord MeasureString(const char16_t* aString, int32_t aLength,
|
|
nscoord aMaxWidth, uint32_t& aMaxFit,
|
|
gfxContext& aContext, nsFontMetrics& aFontMetrics);
|
|
|
|
void DisplayAltText(nsPresContext* aPresContext,
|
|
gfxContext& aRenderingContext, const nsString& aAltText,
|
|
const nsRect& aRect);
|
|
|
|
ImgDrawResult PaintImage(gfxContext& aRenderingContext, nsPoint aPt,
|
|
const nsRect& aDirtyRect, imgIContainer* aImage,
|
|
uint32_t aFlags);
|
|
|
|
/**
|
|
* If we're ready to decode - that is, if our current request's image is
|
|
* available and our decoding heuristics are satisfied - then trigger a decode
|
|
* for our image at the size we predict it will be drawn next time it's
|
|
* painted.
|
|
*/
|
|
void MaybeDecodeForPredictedSize();
|
|
|
|
protected:
|
|
friend class nsImageListener;
|
|
friend class nsImageLoadingContent;
|
|
friend class mozilla::PresShell;
|
|
|
|
void OnSizeAvailable(imgIRequest* aRequest, imgIContainer* aImage);
|
|
void OnFrameUpdate(imgIRequest* aRequest, const nsIntRect* aRect);
|
|
void OnLoadComplete(imgIRequest* aRequest, nsresult aStatus);
|
|
|
|
/**
|
|
* Notification that aRequest will now be the current request.
|
|
*/
|
|
void NotifyNewCurrentRequest(imgIRequest* aRequest, nsresult aStatus);
|
|
|
|
/// Always sync decode our image when painting if @aForce is true.
|
|
void SetForceSyncDecoding(bool aForce) { mForceSyncDecoding = aForce; }
|
|
|
|
/**
|
|
* Computes the predicted dest rect that we'll draw into, in app units, based
|
|
* upon the provided frame content box. (The content box is what
|
|
* nsDisplayImage::GetBounds() returns.)
|
|
* The result is not necessarily contained in the frame content box.
|
|
*/
|
|
nsRect PredictedDestRect(const nsRect& aFrameContentBox);
|
|
|
|
private:
|
|
void MaybeRecordContentUrlOnImageTelemetry();
|
|
|
|
// random helpers
|
|
inline void SpecToURI(const nsAString& aSpec, nsIURI** aURI);
|
|
|
|
inline void GetLoadGroup(nsPresContext* aPresContext,
|
|
nsILoadGroup** aLoadGroup);
|
|
nscoord GetContinuationOffset() const;
|
|
void GetDocumentCharacterSet(nsACString& aCharset) const;
|
|
bool ShouldDisplaySelection();
|
|
|
|
// Whether the image frame should use the mapped aspect ratio from width=""
|
|
// and height="".
|
|
bool ShouldUseMappedAspectRatio() const;
|
|
|
|
// Recalculate mIntrinsicSize from the image.
|
|
bool UpdateIntrinsicSize();
|
|
|
|
// Recalculate mIntrinsicRatio from the image.
|
|
bool UpdateIntrinsicRatio();
|
|
|
|
/**
|
|
* This function calculates the transform for converting between
|
|
* source space & destination space. May fail if our image has a
|
|
* percent-valued or zero-valued height or width.
|
|
*
|
|
* @param aTransform The transform object to populate.
|
|
*
|
|
* @return whether we succeeded in creating the transform.
|
|
*/
|
|
bool GetSourceToDestTransform(nsTransform2D& aTransform);
|
|
|
|
/**
|
|
* Helper function to check whether the request corresponds to a load we don't
|
|
* care about. Most of the decoder observer methods will bail early if this
|
|
* returns true.
|
|
*/
|
|
bool IsPendingLoad(imgIRequest*) const;
|
|
|
|
/**
|
|
* Updates mImage based on the current image request (cannot be null), and the
|
|
* image passed in (can be null), and invalidate layout and paint as needed.
|
|
*/
|
|
void UpdateImage(imgIRequest*, imgIContainer*);
|
|
|
|
/**
|
|
* Function to convert a dirty rect in the source image to a dirty
|
|
* rect for the image frame.
|
|
*/
|
|
nsRect SourceRectToDest(const nsIntRect& aRect);
|
|
|
|
/**
|
|
* Triggers invalidation for both our image display item and, if appropriate,
|
|
* our alt-feedback display item.
|
|
*
|
|
* @param aLayerInvalidRect The area to invalidate in layer space. If null,
|
|
* the entire layer will be invalidated.
|
|
* @param aFrameInvalidRect The area to invalidate in frame space. If null,
|
|
* the entire frame will be invalidated.
|
|
*/
|
|
void InvalidateSelf(const nsIntRect* aLayerInvalidRect,
|
|
const nsRect* aFrameInvalidRect);
|
|
|
|
RefPtr<nsImageMap> mImageMap;
|
|
|
|
RefPtr<nsImageListener> mListener;
|
|
|
|
// An image request created for content: url(..).
|
|
RefPtr<imgRequestProxy> mContentURLRequest;
|
|
|
|
nsCOMPtr<imgIContainer> mImage;
|
|
nsCOMPtr<imgIContainer> mPrevImage;
|
|
nsSize mComputedSize;
|
|
mozilla::IntrinsicSize mIntrinsicSize;
|
|
|
|
// Stores mImage's intrinsic ratio, or a default AspectRatio if there's no
|
|
// intrinsic ratio.
|
|
mozilla::AspectRatio mIntrinsicRatio;
|
|
|
|
const Kind mKind;
|
|
bool mContentURLRequestRegistered;
|
|
bool mDisplayingIcon;
|
|
bool mFirstFrameComplete;
|
|
bool mReflowCallbackPosted;
|
|
bool mForceSyncDecoding;
|
|
|
|
/* loading / broken image icon support */
|
|
|
|
// XXXbz this should be handled by the prescontext, I think; that
|
|
// way we would have a single iconload per mozilla session instead
|
|
// of one per document...
|
|
|
|
// LoadIcons: initiate the loading of the static icons used to show
|
|
// loading / broken images
|
|
nsresult LoadIcons(nsPresContext* aPresContext);
|
|
nsresult LoadIcon(const nsAString& aSpec, nsPresContext* aPresContext,
|
|
imgRequestProxy** aRequest);
|
|
|
|
class IconLoad final : public nsIObserver, public imgINotificationObserver {
|
|
// private class that wraps the data and logic needed for
|
|
// broken image and loading image icons
|
|
public:
|
|
IconLoad();
|
|
|
|
void Shutdown();
|
|
|
|
NS_DECL_ISUPPORTS
|
|
NS_DECL_NSIOBSERVER
|
|
NS_DECL_IMGINOTIFICATIONOBSERVER
|
|
|
|
void AddIconObserver(nsImageFrame* frame) {
|
|
MOZ_ASSERT(!mIconObservers.Contains(frame),
|
|
"Observer shouldn't aleady be in array");
|
|
mIconObservers.AppendElement(frame);
|
|
}
|
|
|
|
void RemoveIconObserver(nsImageFrame* frame) {
|
|
mozilla::DebugOnly<bool> didRemove = mIconObservers.RemoveElement(frame);
|
|
MOZ_ASSERT(didRemove, "Observer not in array");
|
|
}
|
|
|
|
private:
|
|
~IconLoad() = default;
|
|
|
|
void GetPrefs();
|
|
nsTObserverArray<nsImageFrame*> mIconObservers;
|
|
|
|
public:
|
|
RefPtr<imgRequestProxy> mLoadingImage;
|
|
RefPtr<imgRequestProxy> mBrokenImage;
|
|
bool mPrefForceInlineAltText;
|
|
bool mPrefShowPlaceholders;
|
|
bool mPrefShowLoadingPlaceholder;
|
|
};
|
|
|
|
public:
|
|
// singleton pattern: one LoadIcons instance is used
|
|
static mozilla::StaticRefPtr<IconLoad> gIconLoad;
|
|
|
|
friend class nsDisplayImage;
|
|
};
|
|
|
|
/**
|
|
* Note that nsDisplayImage does not receive events. However, an image element
|
|
* is replaced content so its background will be z-adjacent to the
|
|
* image itself, and hence receive events just as if the image itself
|
|
* received events.
|
|
*/
|
|
class nsDisplayImage final : public nsDisplayImageContainer {
|
|
public:
|
|
typedef mozilla::layers::LayerManager LayerManager;
|
|
|
|
nsDisplayImage(nsDisplayListBuilder* aBuilder, nsImageFrame* aFrame,
|
|
imgIContainer* aImage, imgIContainer* aPrevImage)
|
|
: nsDisplayImageContainer(aBuilder, aFrame),
|
|
mImage(aImage),
|
|
mPrevImage(aPrevImage) {
|
|
MOZ_COUNT_CTOR(nsDisplayImage);
|
|
}
|
|
~nsDisplayImage() final { MOZ_COUNT_DTOR(nsDisplayImage); }
|
|
|
|
nsDisplayItemGeometry* AllocateGeometry(nsDisplayListBuilder*) final;
|
|
void ComputeInvalidationRegion(nsDisplayListBuilder*,
|
|
const nsDisplayItemGeometry*,
|
|
nsRegion* aInvalidRegion) const final;
|
|
void Paint(nsDisplayListBuilder*, gfxContext* aCtx) final;
|
|
|
|
already_AddRefed<imgIContainer> GetImage() final;
|
|
|
|
/**
|
|
* @return The dest rect we'll use when drawing this image, in app units.
|
|
* Not necessarily contained in this item's bounds.
|
|
*/
|
|
nsRect GetDestRect() const final;
|
|
|
|
void UpdateDrawResult(mozilla::image::ImgDrawResult aResult) final {
|
|
nsDisplayItemGenericImageGeometry::UpdateDrawResult(this, aResult);
|
|
}
|
|
|
|
LayerState GetLayerState(nsDisplayListBuilder*, LayerManager*,
|
|
const ContainerLayerParameters&) final;
|
|
nsRect GetBounds(bool* aSnap) const {
|
|
*aSnap = true;
|
|
|
|
nsImageFrame* imageFrame = static_cast<nsImageFrame*>(mFrame);
|
|
return imageFrame->GetInnerArea() + ToReferenceFrame();
|
|
}
|
|
|
|
nsRect GetBounds(nsDisplayListBuilder*, bool* aSnap) const final {
|
|
return GetBounds(aSnap);
|
|
}
|
|
|
|
nsRegion GetOpaqueRegion(nsDisplayListBuilder*, bool* aSnap) const final;
|
|
|
|
already_AddRefed<Layer> BuildLayer(nsDisplayListBuilder*, LayerManager*,
|
|
const ContainerLayerParameters&) final;
|
|
bool CreateWebRenderCommands(mozilla::wr::DisplayListBuilder&,
|
|
mozilla::wr::IpcResourceUpdateQueue&,
|
|
const StackingContextHelper&,
|
|
mozilla::layers::RenderRootStateManager*,
|
|
nsDisplayListBuilder*) final;
|
|
|
|
NS_DISPLAY_DECL_NAME("Image", TYPE_IMAGE)
|
|
private:
|
|
nsCOMPtr<imgIContainer> mImage;
|
|
nsCOMPtr<imgIContainer> mPrevImage;
|
|
};
|
|
|
|
#endif /* nsImageFrame_h___ */
|