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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=2 sw=2 et tw=78: */
/* 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 nsIFrameInlines_h___
#define nsIFrameInlines_h___
#include "nsContainerFrame.h"
#include "nsStyleStructInlines.h"
#include "nsCSSAnonBoxes.h"
bool
nsIFrame::IsFlexItem() const
{
return GetParent() &&
GetParent()->GetType() == nsGkAtoms::flexContainerFrame &&
!(GetStateBits() & NS_FRAME_OUT_OF_FLOW);
}
bool
nsIFrame::IsFlexOrGridContainer() const
{
nsIAtom* t = GetType();
return t == nsGkAtoms::flexContainerFrame ||
t == nsGkAtoms::gridContainerFrame;
}
bool
nsIFrame::IsFlexOrGridItem() const
{
return !(GetStateBits() & NS_FRAME_OUT_OF_FLOW) &&
GetParent() &&
GetParent()->IsFlexOrGridContainer();
}
bool
nsIFrame::IsTableCaption() const
{
return StyleDisplay()->mDisplay == mozilla::StyleDisplay::TableCaption &&
GetParent()->StyleContext()->GetPseudo() == nsCSSAnonBoxes::tableWrapper;
}
bool
nsIFrame::IsFloating() const
{
return StyleDisplay()->IsFloating(this);
}
bool
nsIFrame::IsAbsPosContainingBlock() const
{
return StyleDisplay()->IsAbsPosContainingBlock(this);
}
bool
nsIFrame::IsFixedPosContainingBlock() const
{
return StyleDisplay()->IsFixedPosContainingBlock(this);
}
bool
nsIFrame::IsRelativelyPositioned() const
{
return StyleDisplay()->IsRelativelyPositioned(this);
}
bool
nsIFrame::IsAbsolutelyPositioned() const
{
return StyleDisplay()->IsAbsolutelyPositioned(this);
}
bool
nsIFrame::IsBlockInside() const
{
return StyleDisplay()->IsBlockInside(this);
}
bool
nsIFrame::IsBlockOutside() const
{
return StyleDisplay()->IsBlockOutside(this);
}
bool
nsIFrame::IsInlineOutside() const
{
return StyleDisplay()->IsInlineOutside(this);
}
mozilla::StyleDisplay
nsIFrame::GetDisplay() const
{
return StyleDisplay()->GetDisplay(this);
}
nscoord
nsIFrame::SynthesizeBaselineBOffsetFromMarginBox(
mozilla::WritingMode aWM,
BaselineSharingGroup aGroup) const
{
MOZ_ASSERT(!aWM.IsOrthogonalTo(GetWritingMode()));
auto margin = GetLogicalUsedMargin(aWM);
if (aGroup == BaselineSharingGroup::eFirst) {
if (aWM.IsAlphabeticalBaseline()) {
// First baseline for inverted-line content is the block-start margin edge,
// as the frame is in effect "flipped" for alignment purposes.
return MOZ_UNLIKELY(aWM.IsLineInverted()) ? -margin.BStart(aWM)
: BSize(aWM) + margin.BEnd(aWM);
}
nscoord marginBoxCenter = (BSize(aWM) + margin.BStartEnd(aWM)) / 2;
return marginBoxCenter - margin.BStart(aWM);
}
MOZ_ASSERT(aGroup == BaselineSharingGroup::eLast);
if (aWM.IsAlphabeticalBaseline()) {
// Last baseline for inverted-line content is the block-start margin edge,
// as the frame is in effect "flipped" for alignment purposes.
return MOZ_UNLIKELY(aWM.IsLineInverted()) ? BSize(aWM) + margin.BStart(aWM)
: -margin.BEnd(aWM);
}
// Round up for central baseline offset, to be consistent with eFirst.
nscoord marginBoxSize = BSize(aWM) + margin.BStartEnd(aWM);
nscoord marginBoxCenter = (marginBoxSize / 2) + (marginBoxSize % 2);
return marginBoxCenter - margin.BEnd(aWM);
}
nscoord
nsIFrame::SynthesizeBaselineBOffsetFromBorderBox(
mozilla::WritingMode aWM,
BaselineSharingGroup aGroup) const
{
MOZ_ASSERT(!aWM.IsOrthogonalTo(GetWritingMode()));
nscoord borderBoxSize = BSize(aWM);
if (aGroup == BaselineSharingGroup::eFirst) {
return MOZ_LIKELY(aWM.IsAlphabeticalBaseline()) ? borderBoxSize
: borderBoxSize / 2;
}
MOZ_ASSERT(aGroup == BaselineSharingGroup::eLast);
// Round up for central baseline offset, to be consistent with eFirst.
auto borderBoxCenter = (borderBoxSize / 2) + (borderBoxSize % 2);
return MOZ_LIKELY(aWM.IsAlphabeticalBaseline()) ? 0 : borderBoxCenter;
}
nscoord
nsIFrame::BaselineBOffset(mozilla::WritingMode aWM,
BaselineSharingGroup aBaselineGroup,
AlignmentContext aAlignmentContext) const
{
MOZ_ASSERT(!aWM.IsOrthogonalTo(GetWritingMode()));
nscoord baseline;
if (GetNaturalBaselineBOffset(aWM, aBaselineGroup, &baseline)) {
return baseline;
}
if (aAlignmentContext == AlignmentContext::eInline) {
return SynthesizeBaselineBOffsetFromMarginBox(aWM, aBaselineGroup);
}
// XXX AlignmentContext::eTable should use content box?
return SynthesizeBaselineBOffsetFromBorderBox(aWM, aBaselineGroup);
}
#endif
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