forked from mirrors/gecko-dev
5a6212f1ce
Remove a bit of the aStyleDisplay gunk that shouldn't be needed because of two reasons: * Stylo is faster / has the style display one pointer-chase away, as opposed to the old style system. * We now check the MAY_BE_TRANSFORMED bit first now, and we deal with SVG-transformed frames, so for non-transformed frames IsTransformed should just be a bit-check now. Differential Revision: https://phabricator.services.mozilla.com/D109511
563 lines
20 KiB
C++
563 lines
20 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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// Main header first:
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#include "SVGForeignObjectFrame.h"
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// Keep others in (case-insensitive) order:
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#include "ImgDrawResult.h"
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#include "gfxContext.h"
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#include "mozilla/AutoRestore.h"
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#include "mozilla/PresShell.h"
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#include "mozilla/SVGContainerFrame.h"
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#include "mozilla/SVGObserverUtils.h"
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#include "mozilla/SVGOuterSVGFrame.h"
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#include "mozilla/SVGUtils.h"
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#include "mozilla/dom/SVGForeignObjectElement.h"
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#include "nsDisplayList.h"
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#include "nsGkAtoms.h"
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#include "nsNameSpaceManager.h"
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#include "nsLayoutUtils.h"
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#include "nsRegion.h"
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#include "SVGGeometryProperty.h"
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using namespace mozilla::dom;
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using namespace mozilla::image;
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namespace SVGT = SVGGeometryProperty::Tags;
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//----------------------------------------------------------------------
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// Implementation
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nsContainerFrame* NS_NewSVGForeignObjectFrame(mozilla::PresShell* aPresShell,
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mozilla::ComputedStyle* aStyle) {
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return new (aPresShell)
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mozilla::SVGForeignObjectFrame(aStyle, aPresShell->GetPresContext());
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}
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namespace mozilla {
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NS_IMPL_FRAMEARENA_HELPERS(SVGForeignObjectFrame)
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SVGForeignObjectFrame::SVGForeignObjectFrame(ComputedStyle* aStyle,
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nsPresContext* aPresContext)
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: nsContainerFrame(aStyle, aPresContext, kClassID), mInReflow(false) {
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AddStateBits(NS_FRAME_REFLOW_ROOT | NS_FRAME_MAY_BE_TRANSFORMED |
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NS_FRAME_SVG_LAYOUT);
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}
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//----------------------------------------------------------------------
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// nsIFrame methods
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NS_QUERYFRAME_HEAD(SVGForeignObjectFrame)
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NS_QUERYFRAME_ENTRY(ISVGDisplayableFrame)
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NS_QUERYFRAME_TAIL_INHERITING(nsContainerFrame)
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void SVGForeignObjectFrame::Init(nsIContent* aContent,
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nsContainerFrame* aParent,
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nsIFrame* aPrevInFlow) {
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NS_ASSERTION(aContent->IsSVGElement(nsGkAtoms::foreignObject),
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"Content is not an SVG foreignObject!");
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nsContainerFrame::Init(aContent, aParent, aPrevInFlow);
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AddStateBits(aParent->GetStateBits() & NS_STATE_SVG_CLIPPATH_CHILD);
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AddStateBits(NS_FRAME_FONT_INFLATION_CONTAINER |
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NS_FRAME_FONT_INFLATION_FLOW_ROOT);
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AddStateBits(NS_FRAME_MAY_BE_TRANSFORMED);
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if (!(mState & NS_FRAME_IS_NONDISPLAY)) {
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SVGUtils::GetOuterSVGFrame(this)->RegisterForeignObject(this);
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}
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}
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void SVGForeignObjectFrame::DestroyFrom(nsIFrame* aDestructRoot,
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PostDestroyData& aPostDestroyData) {
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// Only unregister if we registered in the first place:
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if (!(mState & NS_FRAME_IS_NONDISPLAY)) {
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SVGUtils::GetOuterSVGFrame(this)->UnregisterForeignObject(this);
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}
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nsContainerFrame::DestroyFrom(aDestructRoot, aPostDestroyData);
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}
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nsresult SVGForeignObjectFrame::AttributeChanged(int32_t aNameSpaceID,
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nsAtom* aAttribute,
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int32_t aModType) {
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if (aNameSpaceID == kNameSpaceID_None) {
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if (aAttribute == nsGkAtoms::transform) {
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// We don't invalidate for transform changes (the layers code does that).
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// Also note that SVGTransformableElement::GetAttributeChangeHint will
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// return nsChangeHint_UpdateOverflow for "transform" attribute changes
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// and cause DoApplyRenderingChangeToTree to make the SchedulePaint call.
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mCanvasTM = nullptr;
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} else if (aAttribute == nsGkAtoms::viewBox ||
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aAttribute == nsGkAtoms::preserveAspectRatio) {
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nsLayoutUtils::PostRestyleEvent(
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mContent->AsElement(), RestyleHint{0},
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nsChangeHint_InvalidateRenderingObservers);
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}
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}
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return NS_OK;
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}
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void SVGForeignObjectFrame::DidSetComputedStyle(
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ComputedStyle* aOldComputedStyle) {
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nsContainerFrame::DidSetComputedStyle(aOldComputedStyle);
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if (aOldComputedStyle) {
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if (StyleSVGReset()->mX != aOldComputedStyle->StyleSVGReset()->mX ||
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StyleSVGReset()->mY != aOldComputedStyle->StyleSVGReset()->mY) {
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// Invalidate cached transform matrix.
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mCanvasTM = nullptr;
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SVGUtils::ScheduleReflowSVG(this);
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}
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}
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}
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void SVGForeignObjectFrame::Reflow(nsPresContext* aPresContext,
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ReflowOutput& aDesiredSize,
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const ReflowInput& aReflowInput,
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nsReflowStatus& aStatus) {
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MOZ_ASSERT(aStatus.IsEmpty(), "Caller should pass a fresh reflow status!");
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MOZ_ASSERT(!HasAnyStateBits(NS_FRAME_IS_NONDISPLAY),
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"Should not have been called");
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// Only InvalidateAndScheduleBoundsUpdate marks us with NS_FRAME_IS_DIRTY,
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// so if that bit is still set we still have a resize pending. If we hit
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// this assertion, then we should get the presShell to skip reflow roots
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// that have a dirty parent since a reflow is going to come via the
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// reflow root's parent anyway.
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NS_ASSERTION(!HasAnyStateBits(NS_FRAME_IS_DIRTY),
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"Reflowing while a resize is pending is wasteful");
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// ReflowSVG makes sure mRect is up to date before we're called.
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NS_ASSERTION(!aReflowInput.mParentReflowInput,
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"should only get reflow from being reflow root");
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NS_ASSERTION(aReflowInput.ComputedWidth() == GetSize().width &&
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aReflowInput.ComputedHeight() == GetSize().height,
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"reflow roots should be reflowed at existing size and "
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"svg.css should ensure we have no padding/border/margin");
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DoReflow();
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WritingMode wm = aReflowInput.GetWritingMode();
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LogicalSize finalSize(wm, aReflowInput.ComputedISize(),
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aReflowInput.ComputedBSize());
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aDesiredSize.SetSize(wm, finalSize);
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aDesiredSize.SetOverflowAreasToDesiredBounds();
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}
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void SVGForeignObjectFrame::BuildDisplayList(nsDisplayListBuilder* aBuilder,
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const nsDisplayListSet& aLists) {
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if (!static_cast<const SVGElement*>(GetContent())->HasValidDimensions()) {
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return;
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}
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nsDisplayList newList;
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nsDisplayListSet set(&newList, &newList, &newList, &newList, &newList,
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&newList);
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DisplayOutline(aBuilder, set);
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BuildDisplayListForNonBlockChildren(aBuilder, set);
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aLists.Content()->AppendNewToTop<nsDisplayForeignObject>(aBuilder, this,
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&newList);
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}
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bool SVGForeignObjectFrame::IsSVGTransformed(
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Matrix* aOwnTransform, Matrix* aFromParentTransform) const {
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bool foundTransform = false;
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// Check if our parent has children-only transforms:
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nsIFrame* parent = GetParent();
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if (parent &&
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parent->IsFrameOfType(nsIFrame::eSVG | nsIFrame::eSVGContainer)) {
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foundTransform =
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static_cast<SVGContainerFrame*>(parent)->HasChildrenOnlyTransform(
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aFromParentTransform);
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}
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SVGElement* content = static_cast<SVGElement*>(GetContent());
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SVGAnimatedTransformList* transformList = content->GetAnimatedTransformList();
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if ((transformList && transformList->HasTransform()) ||
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content->GetAnimateMotionTransform()) {
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if (aOwnTransform) {
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*aOwnTransform = gfx::ToMatrix(
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content->PrependLocalTransformsTo(gfxMatrix(), eUserSpaceToParent));
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}
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foundTransform = true;
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}
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return foundTransform;
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}
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void SVGForeignObjectFrame::PaintSVG(gfxContext& aContext,
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const gfxMatrix& aTransform,
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imgDrawingParams& aImgParams,
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const nsIntRect* aDirtyRect) {
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NS_ASSERTION(
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!NS_SVGDisplayListPaintingEnabled() || (mState & NS_FRAME_IS_NONDISPLAY),
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"If display lists are enabled, only painting of non-display "
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"SVG should take this code path");
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if (IsDisabled()) {
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return;
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}
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nsIFrame* kid = PrincipalChildList().FirstChild();
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if (!kid) {
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return;
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}
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if (aTransform.IsSingular()) {
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NS_WARNING("Can't render foreignObject element!");
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return;
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}
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nsRect kidDirtyRect = kid->InkOverflowRect();
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/* Check if we need to draw anything. */
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if (aDirtyRect) {
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NS_ASSERTION(!NS_SVGDisplayListPaintingEnabled() ||
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(mState & NS_FRAME_IS_NONDISPLAY),
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"Display lists handle dirty rect intersection test");
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// Transform the dirty rect into app units in our userspace.
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gfxMatrix invmatrix = aTransform;
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DebugOnly<bool> ok = invmatrix.Invert();
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NS_ASSERTION(ok, "inverse of non-singular matrix should be non-singular");
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gfxRect transDirtyRect = gfxRect(aDirtyRect->x, aDirtyRect->y,
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aDirtyRect->width, aDirtyRect->height);
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transDirtyRect = invmatrix.TransformBounds(transDirtyRect);
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kidDirtyRect.IntersectRect(kidDirtyRect,
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nsLayoutUtils::RoundGfxRectToAppRect(
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transDirtyRect, AppUnitsPerCSSPixel()));
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// XXX after bug 614732 is fixed, we will compare mRect with aDirtyRect,
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// not with kidDirtyRect. I.e.
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// int32_t appUnitsPerDevPx = PresContext()->AppUnitsPerDevPixel();
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// mRect.ToOutsidePixels(appUnitsPerDevPx).Intersects(*aDirtyRect)
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if (kidDirtyRect.IsEmpty()) {
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return;
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}
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}
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aContext.Save();
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if (StyleDisplay()->IsScrollableOverflow()) {
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float x, y, width, height;
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SVGGeometryProperty::ResolveAll<SVGT::X, SVGT::Y, SVGT::Width,
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SVGT::Height>(
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static_cast<SVGElement*>(GetContent()), &x, &y, &width, &height);
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gfxRect clipRect =
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SVGUtils::GetClipRectForFrame(this, 0.0f, 0.0f, width, height);
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SVGUtils::SetClipRect(&aContext, aTransform, clipRect);
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}
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// SVG paints in CSS px, but normally frames paint in dev pixels. Here we
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// multiply a CSS-px-to-dev-pixel factor onto aTransform so our children
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// paint correctly.
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float cssPxPerDevPx = nsPresContext::AppUnitsToFloatCSSPixels(
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PresContext()->AppUnitsPerDevPixel());
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gfxMatrix canvasTMForChildren = aTransform;
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canvasTMForChildren.PreScale(cssPxPerDevPx, cssPxPerDevPx);
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aContext.Multiply(canvasTMForChildren);
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using PaintFrameFlags = nsLayoutUtils::PaintFrameFlags;
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PaintFrameFlags flags = PaintFrameFlags::InTransform;
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if (SVGAutoRenderState::IsPaintingToWindow(aContext.GetDrawTarget())) {
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flags |= PaintFrameFlags::ToWindow;
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}
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if (aImgParams.imageFlags & imgIContainer::FLAG_SYNC_DECODE) {
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flags |= PaintFrameFlags::SyncDecodeImages;
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}
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if (aImgParams.imageFlags & imgIContainer::FLAG_HIGH_QUALITY_SCALING) {
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flags |= PaintFrameFlags::UseHighQualityScaling;
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}
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Unused << nsLayoutUtils::PaintFrame(
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&aContext, kid, nsRegion(kidDirtyRect), NS_RGBA(0, 0, 0, 0),
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nsDisplayListBuilderMode::Painting, flags);
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aContext.Restore();
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}
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nsIFrame* SVGForeignObjectFrame::GetFrameForPoint(const gfxPoint& aPoint) {
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NS_ASSERTION(!NS_SVGDisplayListHitTestingEnabled() ||
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(mState & NS_FRAME_IS_NONDISPLAY),
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"If display lists are enabled, only hit-testing of a "
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"clipPath's contents should take this code path");
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if (IsDisabled() || HasAnyStateBits(NS_FRAME_IS_NONDISPLAY)) {
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return nullptr;
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}
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nsIFrame* kid = PrincipalChildList().FirstChild();
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if (!kid) {
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return nullptr;
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}
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float x, y, width, height;
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SVGGeometryProperty::ResolveAll<SVGT::X, SVGT::Y, SVGT::Width, SVGT::Height>(
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static_cast<SVGElement*>(GetContent()), &x, &y, &width, &height);
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if (!gfxRect(x, y, width, height).Contains(aPoint) ||
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!SVGUtils::HitTestClip(this, aPoint)) {
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return nullptr;
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}
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// Convert the point to app units relative to the top-left corner of the
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// viewport that's established by the foreignObject element:
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gfxPoint pt = (aPoint + gfxPoint(x, y)) * AppUnitsPerCSSPixel();
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nsPoint point = nsPoint(NSToIntRound(pt.x), NSToIntRound(pt.y));
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return nsLayoutUtils::GetFrameForPoint(RelativeTo{kid}, point);
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}
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void SVGForeignObjectFrame::ReflowSVG() {
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NS_ASSERTION(SVGUtils::OuterSVGIsCallingReflowSVG(this),
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"This call is probably a wasteful mistake");
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MOZ_ASSERT(!HasAnyStateBits(NS_FRAME_IS_NONDISPLAY),
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"ReflowSVG mechanism not designed for this");
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if (!SVGUtils::NeedsReflowSVG(this)) {
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return;
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}
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// We update mRect before the DoReflow call so that DoReflow uses the
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// correct dimensions:
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float x, y, w, h;
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SVGGeometryProperty::ResolveAll<SVGT::X, SVGT::Y, SVGT::Width, SVGT::Height>(
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static_cast<SVGElement*>(GetContent()), &x, &y, &w, &h);
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// If mRect's width or height are negative, reflow blows up! We must clamp!
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if (w < 0.0f) w = 0.0f;
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if (h < 0.0f) h = 0.0f;
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mRect = nsLayoutUtils::RoundGfxRectToAppRect(gfxRect(x, y, w, h),
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AppUnitsPerCSSPixel());
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// Fully mark our kid dirty so that it gets resized if necessary
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// (NS_FRAME_HAS_DIRTY_CHILDREN isn't enough in that case):
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nsIFrame* kid = PrincipalChildList().FirstChild();
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kid->MarkSubtreeDirty();
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// Make sure to not allow interrupts if we're not being reflown as a root:
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nsPresContext::InterruptPreventer noInterrupts(PresContext());
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DoReflow();
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if (mState & NS_FRAME_FIRST_REFLOW) {
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// Make sure we have our filter property (if any) before calling
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// FinishAndStoreOverflow (subsequent filter changes are handled off
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// nsChangeHint_UpdateEffects):
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SVGObserverUtils::UpdateEffects(this);
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}
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// If we have a filter, we need to invalidate ourselves because filter
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// output can change even if none of our descendants need repainting.
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if (StyleEffects()->HasFilters()) {
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InvalidateFrame();
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}
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auto* anonKid = PrincipalChildList().FirstChild();
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nsRect overflow = anonKid->InkOverflowRect();
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OverflowAreas overflowAreas(overflow, overflow);
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FinishAndStoreOverflow(overflowAreas, mRect.Size());
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// Now unset the various reflow bits:
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RemoveStateBits(NS_FRAME_FIRST_REFLOW | NS_FRAME_IS_DIRTY |
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NS_FRAME_HAS_DIRTY_CHILDREN);
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}
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void SVGForeignObjectFrame::NotifySVGChanged(uint32_t aFlags) {
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MOZ_ASSERT(aFlags & (TRANSFORM_CHANGED | COORD_CONTEXT_CHANGED),
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"Invalidation logic may need adjusting");
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bool needNewBounds = false; // i.e. mRect or ink overflow rect
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bool needReflow = false;
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bool needNewCanvasTM = false;
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if (aFlags & COORD_CONTEXT_CHANGED) {
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// Coordinate context changes affect mCanvasTM if we have a
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// percentage 'x' or 'y'
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if (StyleSVGReset()->mX.HasPercent() || StyleSVGReset()->mY.HasPercent()) {
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needNewBounds = true;
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needNewCanvasTM = true;
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}
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// Our coordinate context's width/height has changed. If we have a
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// percentage width/height our dimensions will change so we must reflow.
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if (StylePosition()->mWidth.HasPercent() ||
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StylePosition()->mHeight.HasPercent()) {
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needNewBounds = true;
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needReflow = true;
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}
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}
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if (aFlags & TRANSFORM_CHANGED) {
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if (mCanvasTM && mCanvasTM->IsSingular()) {
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needNewBounds = true; // old bounds are bogus
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}
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needNewCanvasTM = true;
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// In an ideal world we would reflow when our CTM changes. This is because
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// glyph metrics do not necessarily scale uniformly with change in scale
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// and, as a result, CTM changes may require text to break at different
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// points. The problem would be how to keep performance acceptable when
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// e.g. the transform of an ancestor is animated.
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// We also seem to get some sort of infinite loop post bug 421584 if we
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// reflow.
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}
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if (needNewBounds) {
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// Ancestor changes can't affect how we render from the perspective of
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// any rendering observers that we may have, so we don't need to
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// invalidate them. We also don't need to invalidate ourself, since our
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// changed ancestor will have invalidated its entire area, which includes
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// our area.
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SVGUtils::ScheduleReflowSVG(this);
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}
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// If we're called while the PresShell is handling reflow events then we
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// must have been called as a result of the NotifyViewportChange() call in
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// our SVGOuterSVGFrame's Reflow() method. We must not call RequestReflow
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// at this point (i.e. during reflow) because it could confuse the
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// PresShell and prevent it from reflowing us properly in future. Besides
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// that, SVGOuterSVGFrame::DidReflow will take care of reflowing us
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// synchronously, so there's no need.
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if (needReflow && !PresShell()->IsReflowLocked()) {
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RequestReflow(IntrinsicDirty::Resize);
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}
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if (needNewCanvasTM) {
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// Do this after calling InvalidateAndScheduleBoundsUpdate in case we
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// change the code and it needs to use it.
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mCanvasTM = nullptr;
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}
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}
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SVGBBox SVGForeignObjectFrame::GetBBoxContribution(
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const Matrix& aToBBoxUserspace, uint32_t aFlags) {
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SVGForeignObjectElement* content =
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static_cast<SVGForeignObjectElement*>(GetContent());
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float x, y, w, h;
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SVGGeometryProperty::ResolveAll<SVGT::X, SVGT::Y, SVGT::Width, SVGT::Height>(
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content, &x, &y, &w, &h);
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if (w < 0.0f) w = 0.0f;
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if (h < 0.0f) h = 0.0f;
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if (aToBBoxUserspace.IsSingular()) {
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// XXX ReportToConsole
|
|
return SVGBBox();
|
|
}
|
|
return aToBBoxUserspace.TransformBounds(gfx::Rect(0.0, 0.0, w, h));
|
|
}
|
|
|
|
//----------------------------------------------------------------------
|
|
|
|
gfxMatrix SVGForeignObjectFrame::GetCanvasTM() {
|
|
if (!mCanvasTM) {
|
|
NS_ASSERTION(GetParent(), "null parent");
|
|
|
|
auto* parent = static_cast<SVGContainerFrame*>(GetParent());
|
|
auto* content = static_cast<SVGForeignObjectElement*>(GetContent());
|
|
|
|
gfxMatrix tm = content->PrependLocalTransformsTo(parent->GetCanvasTM());
|
|
|
|
mCanvasTM = MakeUnique<gfxMatrix>(tm);
|
|
}
|
|
return *mCanvasTM;
|
|
}
|
|
|
|
//----------------------------------------------------------------------
|
|
// Implementation helpers
|
|
|
|
void SVGForeignObjectFrame::RequestReflow(IntrinsicDirty aType) {
|
|
if (HasAnyStateBits(NS_FRAME_FIRST_REFLOW)) {
|
|
// If we haven't had a ReflowSVG() yet, nothing to do.
|
|
return;
|
|
}
|
|
|
|
nsIFrame* kid = PrincipalChildList().FirstChild();
|
|
if (!kid) {
|
|
return;
|
|
}
|
|
|
|
PresShell()->FrameNeedsReflow(kid, aType, NS_FRAME_IS_DIRTY);
|
|
}
|
|
|
|
void SVGForeignObjectFrame::DoReflow() {
|
|
MarkInReflow();
|
|
// Skip reflow if we're zero-sized, unless this is our first reflow.
|
|
if (IsDisabled() && !HasAnyStateBits(NS_FRAME_FIRST_REFLOW)) {
|
|
return;
|
|
}
|
|
|
|
nsPresContext* presContext = PresContext();
|
|
nsIFrame* kid = PrincipalChildList().FirstChild();
|
|
if (!kid) {
|
|
return;
|
|
}
|
|
|
|
// initiate a synchronous reflow here and now:
|
|
RefPtr<gfxContext> renderingContext =
|
|
presContext->PresShell()->CreateReferenceRenderingContext();
|
|
|
|
mInReflow = true;
|
|
|
|
WritingMode wm = kid->GetWritingMode();
|
|
ReflowInput reflowInput(presContext, kid, renderingContext,
|
|
LogicalSize(wm, ISize(wm), NS_UNCONSTRAINEDSIZE));
|
|
ReflowOutput desiredSize(reflowInput);
|
|
nsReflowStatus status;
|
|
|
|
// We don't use mRect.height above because that tells the child to do
|
|
// page/column breaking at that height.
|
|
NS_ASSERTION(
|
|
reflowInput.ComputedPhysicalBorderPadding() == nsMargin(0, 0, 0, 0) &&
|
|
reflowInput.ComputedPhysicalMargin() == nsMargin(0, 0, 0, 0),
|
|
"style system should ensure that :-moz-svg-foreign-content "
|
|
"does not get styled");
|
|
NS_ASSERTION(reflowInput.ComputedISize() == ISize(wm),
|
|
"reflow input made child wrong size");
|
|
reflowInput.SetComputedBSize(BSize(wm));
|
|
|
|
ReflowChild(kid, presContext, desiredSize, reflowInput, 0, 0,
|
|
ReflowChildFlags::NoMoveFrame, status);
|
|
NS_ASSERTION(mRect.width == desiredSize.Width() &&
|
|
mRect.height == desiredSize.Height(),
|
|
"unexpected size");
|
|
FinishReflowChild(kid, presContext, desiredSize, &reflowInput, 0, 0,
|
|
ReflowChildFlags::NoMoveFrame);
|
|
|
|
mInReflow = false;
|
|
}
|
|
|
|
nsRect SVGForeignObjectFrame::GetInvalidRegion() {
|
|
MOZ_ASSERT(!NS_SVGDisplayListPaintingEnabled(),
|
|
"Only called by nsDisplayOuterSVG code");
|
|
|
|
nsIFrame* kid = PrincipalChildList().FirstChild();
|
|
if (kid->HasInvalidFrameInSubtree()) {
|
|
gfxRect r(mRect.x, mRect.y, mRect.width, mRect.height);
|
|
r.Scale(1.0 / AppUnitsPerCSSPixel());
|
|
nsRect rect = SVGUtils::ToCanvasBounds(r, GetCanvasTM(), PresContext());
|
|
rect = SVGUtils::GetPostFilterInkOverflowRect(this, rect);
|
|
return rect;
|
|
}
|
|
return nsRect();
|
|
}
|
|
|
|
void SVGForeignObjectFrame::AppendDirectlyOwnedAnonBoxes(
|
|
nsTArray<OwnedAnonBox>& aResult) {
|
|
MOZ_ASSERT(PrincipalChildList().FirstChild(), "Must have our anon box");
|
|
aResult.AppendElement(OwnedAnonBox(PrincipalChildList().FirstChild()));
|
|
}
|
|
|
|
} // namespace mozilla
|