c27730d3df
Extend the per-frame-class bit we have to devirtualize IsLeaf to also devirtualize IsFrameOfType. That is, move this data to FrameClasses.py. This was done by going through all the frame classes, trying to preserve behavior. The only quirky thing is that I had to add two more trivial frame classes, `nsAudioFrame` for audio elements, and `nsFloatingFirstLetterFrame`. That's because these frame classes were returning different answers at runtime, but they do this only on conditions that trigger frame reconstruction (floating, and being an audio element, respectively). Differential Revision: https://phabricator.services.mozilla.com/D194703
142 lines
5.3 KiB
C
142 lines
5.3 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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/*
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* Inline methods that belong in nsStyleStruct.h, except that they
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* require more headers.
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*/
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#ifndef nsStyleStructInlines_h_
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#define nsStyleStructInlines_h_
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#include "nsIFrame.h"
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#include "nsStyleStruct.h"
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#include "nsIContent.h" // for GetParent()
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#include "nsTextFrame.h" // for nsTextFrame::ShouldSuppressLineBreak
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bool nsStyleText::NewlineIsSignificant(const nsTextFrame* aContextFrame) const {
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NS_ASSERTION(aContextFrame->StyleText() == this, "unexpected aContextFrame");
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return NewlineIsSignificantStyle() &&
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!aContextFrame->ShouldSuppressLineBreak() &&
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!aContextFrame->Style()->IsTextCombined();
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}
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bool nsStyleText::WhiteSpaceCanWrap(const nsIFrame* aContextFrame) const {
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NS_ASSERTION(aContextFrame->StyleText() == this, "unexpected aContextFrame");
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return WhiteSpaceCanWrapStyle() && !aContextFrame->IsInSVGTextSubtree() &&
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!aContextFrame->Style()->IsTextCombined();
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}
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bool nsStyleText::WordCanWrap(const nsIFrame* aContextFrame) const {
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NS_ASSERTION(aContextFrame->StyleText() == this, "unexpected aContextFrame");
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return WordCanWrapStyle() && !aContextFrame->IsInSVGTextSubtree();
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}
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bool nsStyleDisplay::IsBlockOutside(const nsIFrame* aContextFrame) const {
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NS_ASSERTION(aContextFrame->StyleDisplay() == this,
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"unexpected aContextFrame");
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if (aContextFrame->IsInSVGTextSubtree()) {
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return aContextFrame->IsBlockFrame();
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}
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return IsBlockOutsideStyle();
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}
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bool nsStyleDisplay::IsInlineOutside(const nsIFrame* aContextFrame) const {
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NS_ASSERTION(aContextFrame->StyleDisplay() == this,
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"unexpected aContextFrame");
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if (aContextFrame->IsInSVGTextSubtree()) {
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return !aContextFrame->IsBlockFrame();
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}
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return IsInlineOutsideStyle();
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}
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mozilla::StyleDisplay nsStyleDisplay::GetDisplay(
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const nsIFrame* aContextFrame) const {
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NS_ASSERTION(aContextFrame->StyleDisplay() == this,
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"unexpected aContextFrame");
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if (aContextFrame->IsInSVGTextSubtree() &&
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mDisplay != mozilla::StyleDisplay::None) {
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return aContextFrame->IsBlockFrame() ? mozilla::StyleDisplay::Block
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: mozilla::StyleDisplay::Inline;
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}
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return mDisplay;
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}
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bool nsStyleDisplay::IsFloating(const nsIFrame* aContextFrame) const {
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NS_ASSERTION(aContextFrame->StyleDisplay() == this,
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"unexpected aContextFrame");
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return IsFloatingStyle() && !aContextFrame->IsInSVGTextSubtree();
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}
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// If you change this function, also change the corresponding block in
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// nsCSSFrameConstructor::ConstructFrameFromItemInternal that references
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// this function in comments.
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bool nsStyleDisplay::HasTransform(const nsIFrame* aContextFrame) const {
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NS_ASSERTION(aContextFrame->StyleDisplay() == this,
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"unexpected aContextFrame");
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return HasTransformStyle() && aContextFrame->SupportsCSSTransforms();
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}
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bool nsStyleDisplay::HasPerspective(const nsIFrame* aContextFrame) const {
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MOZ_ASSERT(aContextFrame->StyleDisplay() == this, "unexpected aContextFrame");
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return HasPerspectiveStyle() && aContextFrame->SupportsCSSTransforms();
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}
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bool nsStyleDisplay::
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IsFixedPosContainingBlockForContainLayoutAndPaintSupportingFrames() const {
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return IsContainPaint() || IsContainLayout() ||
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mWillChange.bits & mozilla::StyleWillChangeBits::CONTAIN;
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}
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bool nsStyleDisplay::IsFixedPosContainingBlockForTransformSupportingFrames()
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const {
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// NOTE: Any CSS properties that influence the output of this function
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// should also look at mWillChange as necessary.
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return HasTransformStyle() || HasPerspectiveStyle() ||
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mWillChange.bits & mozilla::StyleWillChangeBits::PERSPECTIVE;
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}
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bool nsStyleDisplay::IsRelativelyOrStickyPositioned(
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const nsIFrame* aContextFrame) const {
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NS_ASSERTION(aContextFrame->StyleDisplay() == this,
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"unexpected aContextFrame");
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return IsRelativelyOrStickyPositionedStyle() &&
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!aContextFrame->IsInSVGTextSubtree();
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}
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bool nsStyleDisplay::IsRelativelyPositioned(
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const nsIFrame* aContextFrame) const {
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NS_ASSERTION(aContextFrame->StyleDisplay() == this,
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"unexpected aContextFrame");
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return IsRelativelyPositionedStyle() && !aContextFrame->IsInSVGTextSubtree();
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}
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bool nsStyleDisplay::IsStickyPositioned(const nsIFrame* aContextFrame) const {
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NS_ASSERTION(aContextFrame->StyleDisplay() == this,
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"unexpected aContextFrame");
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return IsStickyPositionedStyle() && !aContextFrame->IsInSVGTextSubtree();
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}
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bool nsStyleDisplay::IsAbsolutelyPositioned(
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const nsIFrame* aContextFrame) const {
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NS_ASSERTION(aContextFrame->StyleDisplay() == this,
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"unexpected aContextFrame");
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return IsAbsolutelyPositionedStyle() && !aContextFrame->IsInSVGTextSubtree();
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}
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bool nsStyleBackground::HasLocalBackground() const {
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NS_FOR_VISIBLE_IMAGE_LAYERS_BACK_TO_FRONT(i, mImage) {
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const nsStyleImageLayers::Layer& layer = mImage.mLayers[i];
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if (!layer.mImage.IsNone() &&
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layer.mAttachment == mozilla::StyleImageLayerAttachment::Local) {
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return true;
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}
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}
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return false;
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}
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#endif /* !defined(nsStyleStructInlines_h_) */
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