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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/. */
/*
* Inline methods that belong in nsStyleStruct.h, except that they
* require more headers.
*/
#ifndef nsStyleStructInlines_h_
#define nsStyleStructInlines_h_
#include "nsIFrame.h"
#include "nsStyleStruct.h"
#include "nsIContent.h" // for GetParent()
#include "nsTextFrame.h" // for nsTextFrame::ShouldSuppressLineBreak
#include "mozilla/SVGUtils.h" // for SVGUtils::IsInSVGTextSubtree
bool nsStyleText::NewlineIsSignificant(const nsTextFrame* aContextFrame) const {
NS_ASSERTION(aContextFrame->StyleText() == this, "unexpected aContextFrame");
return NewlineIsSignificantStyle() &&
!aContextFrame->ShouldSuppressLineBreak() &&
!aContextFrame->Style()->IsTextCombined();
}
bool nsStyleText::WhiteSpaceCanWrap(const nsIFrame* aContextFrame) const {
NS_ASSERTION(aContextFrame->StyleText() == this, "unexpected aContextFrame");
return WhiteSpaceCanWrapStyle() &&
!mozilla::SVGUtils::IsInSVGTextSubtree(aContextFrame) &&
!aContextFrame->Style()->IsTextCombined();
}
bool nsStyleText::WordCanWrap(const nsIFrame* aContextFrame) const {
NS_ASSERTION(aContextFrame->StyleText() == this, "unexpected aContextFrame");
return WordCanWrapStyle() &&
!mozilla::SVGUtils::IsInSVGTextSubtree(aContextFrame);
}
bool nsStyleDisplay::IsBlockOutside(const nsIFrame* aContextFrame) const {
NS_ASSERTION(aContextFrame->StyleDisplay() == this,
"unexpected aContextFrame");
if (mozilla::SVGUtils::IsInSVGTextSubtree(aContextFrame)) {
return aContextFrame->IsBlockFrame();
}
return IsBlockOutsideStyle();
}
bool nsStyleDisplay::IsInlineOutside(const nsIFrame* aContextFrame) const {
NS_ASSERTION(aContextFrame->StyleDisplay() == this,
"unexpected aContextFrame");
if (mozilla::SVGUtils::IsInSVGTextSubtree(aContextFrame)) {
return !aContextFrame->IsBlockFrame();
}
return IsInlineOutsideStyle();
}
mozilla::StyleDisplay nsStyleDisplay::GetDisplay(
const nsIFrame* aContextFrame) const {
NS_ASSERTION(aContextFrame->StyleDisplay() == this,
"unexpected aContextFrame");
if (mozilla::SVGUtils::IsInSVGTextSubtree(aContextFrame) &&
mDisplay != mozilla::StyleDisplay::None) {
return aContextFrame->IsBlockFrame() ? mozilla::StyleDisplay::Block
: mozilla::StyleDisplay::Inline;
}
return mDisplay;
}
bool nsStyleDisplay::IsFloating(const nsIFrame* aContextFrame) const {
NS_ASSERTION(aContextFrame->StyleDisplay() == this,
"unexpected aContextFrame");
return IsFloatingStyle() &&
!mozilla::SVGUtils::IsInSVGTextSubtree(aContextFrame);
}
// If you change this function, also change the corresponding block in
// nsCSSFrameConstructor::ConstructFrameFromItemInternal that references
// this function in comments.
bool nsStyleDisplay::HasTransform(const nsIFrame* aContextFrame) const {
NS_ASSERTION(aContextFrame->StyleDisplay() == this,
"unexpected aContextFrame");
return HasTransformStyle() &&
aContextFrame->IsFrameOfType(nsIFrame::eSupportsCSSTransforms);
}
bool nsStyleDisplay::HasPerspective(const nsIFrame* aContextFrame) const {
MOZ_ASSERT(aContextFrame->StyleDisplay() == this, "unexpected aContextFrame");
return HasPerspectiveStyle() &&
aContextFrame->IsFrameOfType(nsIFrame::eSupportsCSSTransforms);
}
bool nsStyleDisplay::IsFixedPosContainingBlockForNonSVGTextFrames(
const mozilla::ComputedStyle& aStyle) const {
// NOTE: Any CSS properties that influence the output of this function
// should have the FIXPOS_CB flag set on them.
NS_ASSERTION(aStyle.StyleDisplay() == this, "unexpected aStyle");
if (mWillChange.bits & mozilla::StyleWillChangeBits::FIXPOS_CB) {
return true;
}
return aStyle.StyleEffects()->HasFilters() ||
aStyle.StyleEffects()->HasBackdropFilters();
}
bool nsStyleDisplay::
IsFixedPosContainingBlockForContainLayoutAndPaintSupportingFrames() const {
return IsContainPaint() || IsContainLayout();
}
bool nsStyleDisplay::IsFixedPosContainingBlockForTransformSupportingFrames()
const {
// NOTE: Any CSS properties that influence the output of this function
// should have the FIXPOS_CB flag set on them.
return HasTransformStyle() || HasPerspectiveStyle();
}
bool nsStyleDisplay::IsFixedPosContainingBlock(
const nsIFrame* aContextFrame) const {
mozilla::ComputedStyle* style = aContextFrame->Style();
NS_ASSERTION(style->StyleDisplay() == this, "unexpected aContextFrame");
// NOTE: Any CSS properties that influence the output of this function
// should have the FIXPOS_CB flag set on them.
if (!IsFixedPosContainingBlockForNonSVGTextFrames(*style) &&
(!IsFixedPosContainingBlockForContainLayoutAndPaintSupportingFrames() ||
!aContextFrame->IsFrameOfType(
nsIFrame::eSupportsContainLayoutAndPaint)) &&
(!IsFixedPosContainingBlockForTransformSupportingFrames() ||
!aContextFrame->IsFrameOfType(nsIFrame::eSupportsCSSTransforms))) {
return false;
}
if (mozilla::SVGUtils::IsInSVGTextSubtree(aContextFrame)) {
return false;
}
MOZ_ASSERT(IsAbsPosContainingBlock(aContextFrame),
"Any fixed-pos CB should also be an abs-pos CB");
return true;
}
bool nsStyleDisplay::IsAbsPosContainingBlock(
const nsIFrame* aContextFrame) const {
mozilla::ComputedStyle* style = aContextFrame->Style();
NS_ASSERTION(style->StyleDisplay() == this, "unexpected aContextFrame");
if (!IsPositionedStyle() &&
!IsFixedPosContainingBlockForNonSVGTextFrames(*style) &&
(!IsFixedPosContainingBlockForContainLayoutAndPaintSupportingFrames() ||
!aContextFrame->IsFrameOfType(
nsIFrame::eSupportsContainLayoutAndPaint)) &&
(!IsFixedPosContainingBlockForTransformSupportingFrames() ||
!aContextFrame->IsFrameOfType(nsIFrame::eSupportsCSSTransforms))) {
return false;
}
return !mozilla::SVGUtils::IsInSVGTextSubtree(aContextFrame);
}
bool nsStyleDisplay::IsRelativelyPositioned(
const nsIFrame* aContextFrame) const {
NS_ASSERTION(aContextFrame->StyleDisplay() == this,
"unexpected aContextFrame");
return IsRelativelyPositionedStyle() &&
!mozilla::SVGUtils::IsInSVGTextSubtree(aContextFrame);
}
bool nsStyleDisplay::IsStickyPositioned(const nsIFrame* aContextFrame) const {
NS_ASSERTION(aContextFrame->StyleDisplay() == this,
"unexpected aContextFrame");
return IsStickyPositionedStyle() &&
!mozilla::SVGUtils::IsInSVGTextSubtree(aContextFrame);
}
bool nsStyleDisplay::IsAbsolutelyPositioned(
const nsIFrame* aContextFrame) const {
NS_ASSERTION(aContextFrame->StyleDisplay() == this,
"unexpected aContextFrame");
return IsAbsolutelyPositionedStyle() &&
!mozilla::SVGUtils::IsInSVGTextSubtree(aContextFrame);
}
mozilla::StylePointerEvents nsStyleUI::GetEffectivePointerEvents(
nsIFrame* aFrame) const {
if (aFrame->GetContent() && !aFrame->GetContent()->GetParent()) {
// The root frame is not allowed to have pointer-events: none, or else
// no frames could be hit test against and scrolling the viewport would
// not work.
return mozilla::StylePointerEvents::Auto;
}
return mPointerEvents;
}
bool nsStyleBackground::HasLocalBackground() const {
NS_FOR_VISIBLE_IMAGE_LAYERS_BACK_TO_FRONT(i, mImage) {
const nsStyleImageLayers::Layer& layer = mImage.mLayers[i];
if (!layer.mImage.IsNone() &&
layer.mAttachment == mozilla::StyleImageLayerAttachment::Local) {
return true;
}
}
return false;
}
#endif /* !defined(nsStyleStructInlines_h_) */