mirror of
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bb47a90d4f
Differential Revision: https://phabricator.services.mozilla.com/D26915 --HG-- extra : moz-landing-system : lando
801 lines
27 KiB
C++
801 lines
27 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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/* representation of length values in computed style data */
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#ifndef nsStyleCoord_h___
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#define nsStyleCoord_h___
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#include <type_traits>
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#include "mozilla/EnumTypeTraits.h"
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#include "mozilla/gfx/Types.h"
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#include "Units.h"
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#include "nsCoord.h"
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#include "nsISupportsImpl.h"
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#include "nsStyleConsts.h"
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namespace mozilla {
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class WritingMode;
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// Logical axis, edge, side and corner constants for use in various places.
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enum LogicalAxis { eLogicalAxisBlock = 0x0, eLogicalAxisInline = 0x1 };
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enum LogicalEdge { eLogicalEdgeStart = 0x0, eLogicalEdgeEnd = 0x1 };
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enum LogicalSide : uint8_t {
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eLogicalSideBStart = (eLogicalAxisBlock << 1) | eLogicalEdgeStart, // 0x0
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eLogicalSideBEnd = (eLogicalAxisBlock << 1) | eLogicalEdgeEnd, // 0x1
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eLogicalSideIStart = (eLogicalAxisInline << 1) | eLogicalEdgeStart, // 0x2
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eLogicalSideIEnd = (eLogicalAxisInline << 1) | eLogicalEdgeEnd // 0x3
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};
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enum LogicalCorner {
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eLogicalCornerBStartIStart = 0,
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eLogicalCornerBStartIEnd = 1,
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eLogicalCornerBEndIEnd = 2,
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eLogicalCornerBEndIStart = 3
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};
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using LengthPercentage = StyleLengthPercentage;
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using LengthPercentageOrAuto = StyleLengthPercentageOrAuto;
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using NonNegativeLengthPercentage = StyleNonNegativeLengthPercentage;
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using NonNegativeLengthPercentageOrAuto =
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StyleNonNegativeLengthPercentageOrAuto;
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using NonNegativeLengthPercentageOrNormal =
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StyleNonNegativeLengthPercentageOrNormal;
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using Length = StyleLength;
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using LengthOrAuto = StyleLengthOrAuto;
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using NonNegativeLength = StyleNonNegativeLength;
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using NonNegativeLengthOrAuto = StyleNonNegativeLengthOrAuto;
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using BorderRadius = StyleBorderRadius;
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bool StyleCSSPixelLength::IsZero() const { return _0 == 0.0f; }
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nscoord StyleCSSPixelLength::ToAppUnits() const {
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// We want to resolve the length part of the calc() expression rounding 0.5
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// away from zero, instead of the default behavior of
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// NSToCoordRound{,WithClamp} which do floor(x + 0.5).
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//
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// This is what the rust code in the app_units crate does, and not doing this
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// would regress bug 1323735, for example.
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//
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// FIXME(emilio, bug 1528114): Probably we should do something smarter.
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float length = _0 * float(mozilla::AppUnitsPerCSSPixel());
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if (length >= nscoord_MAX) {
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return nscoord_MAX;
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}
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if (length <= nscoord_MIN) {
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return nscoord_MIN;
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}
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return NSToIntRound(length);
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}
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constexpr LengthPercentage LengthPercentage::Zero() {
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return {{0.}, {0.}, StyleAllowedNumericType::All, false, false};
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}
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LengthPercentage LengthPercentage::FromPixels(CSSCoord aCoord) {
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return {{aCoord}, {0.}, StyleAllowedNumericType::All, false, false};
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}
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LengthPercentage LengthPercentage::FromAppUnits(nscoord aCoord) {
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return LengthPercentage::FromPixels(CSSPixel::FromAppUnits(aCoord));
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}
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LengthPercentage LengthPercentage::FromPercentage(float aPercentage) {
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return {{0.}, {aPercentage}, StyleAllowedNumericType::All, true, false};
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}
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CSSCoord LengthPercentage::LengthInCSSPixels() const { return length._0; }
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float LengthPercentage::Percentage() const { return percentage._0; }
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bool LengthPercentage::HasPercent() const { return has_percentage; }
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bool LengthPercentage::ConvertsToLength() const { return !HasPercent(); }
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nscoord LengthPercentage::ToLength() const {
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MOZ_ASSERT(ConvertsToLength());
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return length.ToAppUnits();
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}
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bool LengthPercentage::ConvertsToPercentage() const {
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return has_percentage && length.IsZero();
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}
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float LengthPercentage::ToPercentage() const {
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MOZ_ASSERT(ConvertsToPercentage());
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return Percentage();
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}
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bool LengthPercentage::HasLengthAndPercentage() const {
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return !ConvertsToLength() && !ConvertsToPercentage();
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}
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bool LengthPercentage::IsDefinitelyZero() const {
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return length.IsZero() && Percentage() == 0.0f;
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}
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CSSCoord LengthPercentage::ResolveToCSSPixels(CSSCoord aPercentageBasis) const {
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return LengthInCSSPixels() + Percentage() * aPercentageBasis;
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}
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template <typename T>
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CSSCoord LengthPercentage::ResolveToCSSPixelsWith(T aPercentageGetter) const {
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static_assert(std::is_same<decltype(aPercentageGetter()), CSSCoord>::value,
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"Should return CSS pixels");
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if (ConvertsToLength()) {
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return LengthInCSSPixels();
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}
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return ResolveToCSSPixels(aPercentageGetter());
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}
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template <typename T, typename U>
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nscoord LengthPercentage::Resolve(T aPercentageGetter,
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U aPercentageRounder) const {
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static_assert(std::is_same<decltype(aPercentageGetter()), nscoord>::value,
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"Should return app units");
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static_assert(
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std::is_same<decltype(aPercentageRounder(1.0f)), nscoord>::value,
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"Should return app units");
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if (ConvertsToLength()) {
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return ToLength();
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}
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nscoord basis = aPercentageGetter();
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return length.ToAppUnits() + aPercentageRounder(basis * Percentage());
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}
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nscoord LengthPercentage::Resolve(nscoord aPercentageBasis) const {
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return Resolve([=] { return aPercentageBasis; }, NSToCoordFloorClamped);
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}
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template <typename T>
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nscoord LengthPercentage::Resolve(T aPercentageGetter) const {
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static_assert(std::is_same<decltype(aPercentageGetter()), nscoord>::value,
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"Should return app units");
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return Resolve(aPercentageGetter, NSToCoordFloorClamped);
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}
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template <typename T>
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nscoord LengthPercentage::Resolve(nscoord aPercentageBasis,
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T aPercentageRounder) const {
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return Resolve([=] { return aPercentageBasis; }, aPercentageRounder);
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}
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#define IMPL_LENGTHPERCENTAGE_FORWARDS(ty_) \
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template <> \
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inline bool ty_::HasPercent() const { \
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return IsLengthPercentage() && AsLengthPercentage().HasPercent(); \
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} \
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template <> \
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inline bool ty_::ConvertsToLength() const { \
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return IsLengthPercentage() && AsLengthPercentage().ConvertsToLength(); \
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} \
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template <> \
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inline bool ty_::HasLengthAndPercentage() const { \
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return IsLengthPercentage() && \
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AsLengthPercentage().HasLengthAndPercentage(); \
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} \
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template <> \
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inline nscoord ty_::ToLength() const { \
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MOZ_ASSERT(ConvertsToLength()); \
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return AsLengthPercentage().ToLength(); \
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} \
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template <> \
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inline bool ty_::ConvertsToPercentage() const { \
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return IsLengthPercentage() && \
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AsLengthPercentage().ConvertsToPercentage(); \
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} \
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template <> \
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inline float ty_::ToPercentage() const { \
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MOZ_ASSERT(ConvertsToPercentage()); \
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return AsLengthPercentage().ToPercentage(); \
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}
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IMPL_LENGTHPERCENTAGE_FORWARDS(LengthPercentageOrAuto)
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IMPL_LENGTHPERCENTAGE_FORWARDS(StyleSize)
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IMPL_LENGTHPERCENTAGE_FORWARDS(StyleMaxSize)
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template <>
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inline bool LengthOrAuto::IsLength() const {
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return IsLengthPercentage();
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}
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template <>
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inline const Length& LengthOrAuto::AsLength() const {
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return AsLengthPercentage();
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}
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template <>
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inline bool StyleFlexBasis::IsAuto() const {
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return IsSize() && AsSize().IsAuto();
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}
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template <>
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inline bool StyleSize::BehavesLikeInitialValueOnBlockAxis() const {
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return IsAuto() || IsExtremumLength();
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}
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template <>
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inline bool StyleMaxSize::BehavesLikeInitialValueOnBlockAxis() const {
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return IsNone() || IsExtremumLength();
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}
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template <>
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inline bool StyleBackgroundSize::IsInitialValue() const {
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return IsExplicitSize() && explicit_size.width.IsAuto() &&
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explicit_size.height.IsAuto();
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}
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template <typename T>
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const T& StyleRect<T>::Get(mozilla::Side aSide) const {
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static_assert(sizeof(StyleRect<T>) == sizeof(T) * 4, "");
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static_assert(alignof(StyleRect<T>) == alignof(T), "");
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return reinterpret_cast<const T*>(this)[aSide];
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}
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template <typename T>
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template <typename Predicate>
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bool StyleRect<T>::All(Predicate aPredicate) const {
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return aPredicate(_0) && aPredicate(_1) && aPredicate(_2) && aPredicate(_3);
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}
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template <typename T>
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template <typename Predicate>
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bool StyleRect<T>::Any(Predicate aPredicate) const {
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return aPredicate(_0) || aPredicate(_1) || aPredicate(_2) || aPredicate(_3);
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}
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template <>
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inline const LengthPercentage& BorderRadius::Get(HalfCorner aCorner) const {
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static_assert(sizeof(BorderRadius) == sizeof(LengthPercentage) * 8, "");
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static_assert(alignof(BorderRadius) == alignof(LengthPercentage), "");
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auto* self = reinterpret_cast<const LengthPercentage*>(this);
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return self[aCorner];
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}
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} // namespace mozilla
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enum nsStyleUnit : uint8_t {
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eStyleUnit_Null = 0, // (no value) value is not specified
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eStyleUnit_Normal = 1, // (no value)
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eStyleUnit_Auto = 2, // (no value)
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eStyleUnit_None = 3, // (no value)
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eStyleUnit_Percent = 10, // (float) 1.0 == 100%
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eStyleUnit_Factor = 11, // (float) a multiplier
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eStyleUnit_Degree = 12, // (float) angle in degrees
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eStyleUnit_FlexFraction = 16, // (float) <flex> in fr units
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eStyleUnit_Coord = 20, // (nscoord) value is twips
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eStyleUnit_Integer = 30, // (int) value is simple integer
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eStyleUnit_Enumerated = 32, // (int) value has enumerated meaning
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// The following are reference counted allocated types.
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eStyleUnit_Calc = 40, // (Calc*) calc() toplevel; always present
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// to distinguish 50% from calc(50%), etc.
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eStyleUnit_MAX = 40 // highest valid nsStyleUnit value
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};
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typedef union {
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int32_t mInt; // nscoord is a int32_t for now
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float mFloat;
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// An mPointer is a reference counted pointer. Currently this can only
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// ever be an nsStyleCoord::Calc*.
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void* mPointer;
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} nsStyleUnion;
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/**
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* Class that hold a single size specification used by the style
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* system. The size specification consists of two parts -- a number
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* and a unit. The number is an integer, a floating point value, an
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* nscoord, or undefined, and the unit is an nsStyleUnit. Checking
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* the unit is a must before asking for the value in any particular
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* form.
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*/
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/** <div rustbindgen private accessor="unsafe"></div> */
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class nsStyleCoord {
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public:
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// Non-reference counted calc() value. See nsStyleStruct.h for some uses
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// of this.
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struct CalcValue {
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// Every calc() expression evaluates to a length plus a percentage.
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nscoord mLength;
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float mPercent;
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bool mHasPercent; // whether there was any % syntax, even if 0
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bool operator==(const CalcValue& aOther) const {
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return mLength == aOther.mLength && mPercent == aOther.mPercent &&
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mHasPercent == aOther.mHasPercent;
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}
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bool operator!=(const CalcValue& aOther) const {
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return !(*this == aOther);
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}
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nscoord ToLength() const {
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MOZ_ASSERT(!mHasPercent);
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return mLength;
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}
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// If this returns true the value is definitely zero. It it returns false
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// it might be zero. So it's best used for conservative optimization.
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bool IsDefinitelyZero() const { return mLength == 0 && mPercent == 0; }
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};
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// Reference counted calc() value. This is the type that is used to store
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// the calc() value in nsStyleCoord.
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struct Calc final : public CalcValue {
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NS_INLINE_DECL_THREADSAFE_REFCOUNTING(Calc)
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Calc() {}
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private:
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Calc(const Calc&) = delete;
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~Calc() {}
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Calc& operator=(const Calc&) = delete;
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};
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explicit nsStyleCoord(nsStyleUnit aUnit = eStyleUnit_Null);
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enum CoordConstructorType { CoordConstructor };
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inline nsStyleCoord(nscoord aValue, CoordConstructorType);
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nsStyleCoord(int32_t aValue, nsStyleUnit aUnit);
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nsStyleCoord(float aValue, nsStyleUnit aUnit);
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inline nsStyleCoord(const nsStyleCoord& aCopy);
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inline nsStyleCoord(const nsStyleUnion& aValue, nsStyleUnit aUnit);
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~nsStyleCoord() { Reset(); }
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nsStyleCoord& operator=(const nsStyleCoord& aOther) {
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if (this != &aOther) {
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SetValue(mUnit, mValue, aOther);
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}
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return *this;
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}
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bool operator==(const nsStyleCoord& aOther) const;
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bool operator!=(const nsStyleCoord& aOther) const;
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nsStyleUnit GetUnit() const {
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NS_ASSERTION(mUnit != eStyleUnit_Null, "reading uninitialized value");
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return mUnit;
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}
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// This is especially useful to check if it is the property's initial value
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// or keyword for sizing properties.
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bool IsAutoOrEnum() const {
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// The initial value of width/height and min-width/min-height is `auto`.
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// The initial value of max-width/max-height is `none`.
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return mUnit == eStyleUnit_Auto || mUnit == eStyleUnit_None ||
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mUnit == eStyleUnit_Enumerated;
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}
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bool IsAngleValue() const { return eStyleUnit_Degree == mUnit; }
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static bool IsCalcUnit(nsStyleUnit aUnit) { return aUnit == eStyleUnit_Calc; }
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static bool IsPointerUnit(nsStyleUnit aUnit) { return IsCalcUnit(aUnit); }
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bool IsCalcUnit() const { return IsCalcUnit(mUnit); }
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bool IsPointerValue() const { return IsPointerUnit(mUnit); }
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bool IsCoordPercentCalcUnit() const {
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return mUnit == eStyleUnit_Coord || mUnit == eStyleUnit_Percent ||
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IsCalcUnit();
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}
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// Does this calc() expression have any percentages inside it? Can be
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// called only when IsCalcUnit() is true.
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bool CalcHasPercent() const { return GetCalcValue()->mHasPercent; }
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bool HasPercent() const {
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return mUnit == eStyleUnit_Percent || (IsCalcUnit() && CalcHasPercent());
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}
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static bool ConvertsToPercent(const nsStyleUnit aUnit,
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const nsStyleUnion aValue) {
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if (aUnit == eStyleUnit_Percent) {
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return true;
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}
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if (!IsCalcUnit(aUnit)) {
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return false;
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}
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auto* calc = AsCalcValue(aValue);
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return calc->mLength == 0 && calc->mHasPercent;
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}
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bool ConvertsToPercent() const { return ConvertsToPercent(mUnit, mValue); }
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float ToPercent() const {
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MOZ_ASSERT(ConvertsToPercent());
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if (IsCalcUnit()) {
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MOZ_ASSERT(CalcHasPercent() && GetCalcValue()->mLength == 0);
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return GetCalcValue()->mPercent;
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}
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return mValue.mFloat;
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}
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static bool ConvertsToLength(const nsStyleUnit aUnit,
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const nsStyleUnion aValue) {
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return aUnit == eStyleUnit_Coord ||
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(IsCalcUnit(aUnit) && !AsCalcValue(aValue)->mHasPercent);
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}
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bool ConvertsToLength() const { return ConvertsToLength(mUnit, mValue); }
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static nscoord ToLength(nsStyleUnit aUnit, nsStyleUnion aValue) {
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MOZ_ASSERT(ConvertsToLength(aUnit, aValue));
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if (IsCalcUnit(aUnit)) {
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// Note: ToLength asserts !mHasPercent
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return AsCalcValue(aValue)->ToLength();
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}
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MOZ_ASSERT(aUnit == eStyleUnit_Coord);
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return aValue.mInt;
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}
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nscoord ToLength() const { return ToLength(GetUnit(), mValue); }
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// Callers must verify IsCalcUnit before calling this function.
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static Calc* AsCalcValue(nsStyleUnion aValue) {
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return static_cast<Calc*>(aValue.mPointer);
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}
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// Compute the value that IsCalcUnit().
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// @note the caller is expected to handle percentage of an indefinite size
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// and NOT call this method with aPercentageBasis == NS_UNCONSTRAINEDSIZE.
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// @note the return value may be negative, e.g. for "calc(a - b%)"
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nscoord ComputeComputedCalc(nscoord aPercentageBasis) const;
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// Compute the value that is either a coord, a percent, or a calc expression.
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// @note the caller is expected to handle percentage of an indefinite size
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// and NOT call this method with aPercentageBasis == NS_UNCONSTRAINEDSIZE.
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// @note the return value may be negative, e.g. for "calc(a - b%)"
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nscoord ComputeCoordPercentCalc(nscoord aPercentageBasis) const;
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nscoord GetCoordValue() const;
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int32_t GetIntValue() const;
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float GetPercentValue() const;
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float GetFactorValue() const;
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float GetFactorOrPercentValue() const;
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float GetAngleValue() const;
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double GetAngleValueInDegrees() const;
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double GetAngleValueInRadians() const;
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float GetFlexFractionValue() const;
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Calc* GetCalcValue() const;
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template <typename T,
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typename = typename std::enable_if<std::is_enum<T>::value>::type>
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T GetEnumValue() const {
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MOZ_ASSERT(GetUnit() == eStyleUnit_Enumerated,
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"The unit must be eStyleUnit_Enumerated!");
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return static_cast<T>(GetIntValue());
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}
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// Sets to null and releases any refcounted objects. Only use this if the
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// object is initialized (i.e. don't use it in nsStyleCoord constructors).
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void Reset();
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void SetCoordValue(nscoord aValue);
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void SetIntValue(int32_t aValue, nsStyleUnit aUnit);
|
|
void SetPercentValue(float aValue);
|
|
void SetFactorValue(float aValue);
|
|
void SetFlexFractionValue(float aValue);
|
|
void SetNormalValue();
|
|
void SetAutoValue();
|
|
void SetNoneValue();
|
|
void SetCalcValue(Calc* aValue);
|
|
template <typename T,
|
|
typename = typename std::enable_if<std::is_enum<T>::value>::type>
|
|
void SetEnumValue(T aValue) {
|
|
static_assert(mozilla::EnumTypeFitsWithin<T, int32_t>::value,
|
|
"aValue must be an enum that fits within mValue.mInt!");
|
|
SetIntValue(static_cast<int32_t>(aValue), eStyleUnit_Enumerated);
|
|
}
|
|
|
|
// Resets a coord represented by a unit/value pair.
|
|
static inline void Reset(nsStyleUnit& aUnit, nsStyleUnion& aValue);
|
|
|
|
// Sets a coord represented by a unit/value pair from a second
|
|
// unit/value pair.
|
|
static inline void SetValue(nsStyleUnit& aUnit, nsStyleUnion& aValue,
|
|
nsStyleUnit aOtherUnit,
|
|
const nsStyleUnion& aOtherValue);
|
|
|
|
// Sets a coord represented by a unit/value pair from an nsStyleCoord.
|
|
static inline void SetValue(nsStyleUnit& aUnit, nsStyleUnion& aValue,
|
|
const nsStyleCoord& aOther);
|
|
|
|
// Like the above, but do not reset before setting.
|
|
static inline void InitWithValue(nsStyleUnit& aUnit, nsStyleUnion& aValue,
|
|
nsStyleUnit aOtherUnit,
|
|
const nsStyleUnion& aOtherValue);
|
|
|
|
static inline void InitWithValue(nsStyleUnit& aUnit, nsStyleUnion& aValue,
|
|
const nsStyleCoord& aOther);
|
|
|
|
private:
|
|
nsStyleUnit mUnit;
|
|
nsStyleUnion mValue;
|
|
};
|
|
|
|
/**
|
|
* Class that represents a set of top/right/bottom/left nsStyleCoords.
|
|
* This is commonly used to hold the widths of the borders, margins,
|
|
* or paddings of a box.
|
|
*/
|
|
/** <div rustbindgen private accessor="unsafe"></div> */
|
|
class nsStyleSides {
|
|
public:
|
|
nsStyleSides();
|
|
nsStyleSides(const nsStyleSides&);
|
|
~nsStyleSides();
|
|
|
|
nsStyleSides& operator=(const nsStyleSides& aCopy);
|
|
bool operator==(const nsStyleSides& aOther) const;
|
|
bool operator!=(const nsStyleSides& aOther) const;
|
|
|
|
inline nsStyleUnit GetUnit(mozilla::Side aSide) const;
|
|
inline nsStyleUnit GetLeftUnit() const;
|
|
inline nsStyleUnit GetTopUnit() const;
|
|
inline nsStyleUnit GetRightUnit() const;
|
|
inline nsStyleUnit GetBottomUnit() const;
|
|
|
|
inline nsStyleCoord Get(mozilla::Side aSide) const;
|
|
inline nsStyleCoord GetLeft() const;
|
|
inline nsStyleCoord GetTop() const;
|
|
inline nsStyleCoord GetRight() const;
|
|
inline nsStyleCoord GetBottom() const;
|
|
|
|
// Methods to access the units and values in terms of logical sides
|
|
// for a given writing mode.
|
|
// NOTE: The definitions are in WritingModes.h (after we have the full
|
|
// declaration of WritingMode available).
|
|
inline nsStyleUnit GetUnit(mozilla::WritingMode aWritingMode,
|
|
mozilla::LogicalSide aSide) const;
|
|
inline nsStyleUnit GetIStartUnit(mozilla::WritingMode aWritingMode) const;
|
|
inline nsStyleUnit GetBStartUnit(mozilla::WritingMode aWritingMode) const;
|
|
inline nsStyleUnit GetIEndUnit(mozilla::WritingMode aWritingMode) const;
|
|
inline nsStyleUnit GetBEndUnit(mozilla::WritingMode aWritingMode) const;
|
|
|
|
// Return true if either the start or end side in the axis is 'auto'.
|
|
inline bool HasBlockAxisAuto(mozilla::WritingMode aWritingMode) const;
|
|
inline bool HasInlineAxisAuto(mozilla::WritingMode aWritingMode) const;
|
|
|
|
inline nsStyleCoord Get(mozilla::WritingMode aWritingMode,
|
|
mozilla::LogicalSide aSide) const;
|
|
inline nsStyleCoord GetIStart(mozilla::WritingMode aWritingMode) const;
|
|
inline nsStyleCoord GetBStart(mozilla::WritingMode aWritingMode) const;
|
|
inline nsStyleCoord GetIEnd(mozilla::WritingMode aWritingMode) const;
|
|
inline nsStyleCoord GetBEnd(mozilla::WritingMode aWritingMode) const;
|
|
|
|
// Sets each side to null and releases any refcounted objects. Only use this
|
|
// if the object is initialized (i.e. don't use it in nsStyleSides
|
|
// constructors).
|
|
void Reset();
|
|
|
|
inline void Set(mozilla::Side aSide, const nsStyleCoord& aCoord);
|
|
inline void SetLeft(const nsStyleCoord& aCoord);
|
|
inline void SetTop(const nsStyleCoord& aCoord);
|
|
inline void SetRight(const nsStyleCoord& aCoord);
|
|
inline void SetBottom(const nsStyleCoord& aCoord);
|
|
|
|
nscoord ToLength(mozilla::Side aSide) const {
|
|
return nsStyleCoord::ToLength(mUnits[aSide], mValues[aSide]);
|
|
}
|
|
|
|
bool ConvertsToLength() const {
|
|
NS_FOR_CSS_SIDES(side) {
|
|
if (!nsStyleCoord::ConvertsToLength(mUnits[side], mValues[side])) {
|
|
return false;
|
|
}
|
|
}
|
|
return true;
|
|
}
|
|
|
|
protected:
|
|
nsStyleUnit mUnits[4];
|
|
nsStyleUnion mValues[4];
|
|
};
|
|
|
|
// -------------------------
|
|
// nsStyleCoord inlines
|
|
//
|
|
inline nsStyleCoord::nsStyleCoord(nscoord aValue, CoordConstructorType)
|
|
: mUnit(eStyleUnit_Coord) {
|
|
mValue.mInt = aValue;
|
|
}
|
|
|
|
inline nsStyleCoord::nsStyleCoord(const nsStyleCoord& aCopy)
|
|
: mUnit(eStyleUnit_Null) {
|
|
InitWithValue(mUnit, mValue, aCopy);
|
|
}
|
|
|
|
inline nsStyleCoord::nsStyleCoord(const nsStyleUnion& aValue, nsStyleUnit aUnit)
|
|
: mUnit(eStyleUnit_Null) {
|
|
InitWithValue(mUnit, mValue, aUnit, aValue);
|
|
}
|
|
|
|
inline bool nsStyleCoord::operator!=(const nsStyleCoord& aOther) const {
|
|
return !((*this) == aOther);
|
|
}
|
|
|
|
inline nscoord nsStyleCoord::GetCoordValue() const {
|
|
NS_ASSERTION((mUnit == eStyleUnit_Coord), "not a coord value");
|
|
if (mUnit == eStyleUnit_Coord) {
|
|
return mValue.mInt;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
inline int32_t nsStyleCoord::GetIntValue() const {
|
|
NS_ASSERTION(
|
|
(mUnit == eStyleUnit_Enumerated) || (mUnit == eStyleUnit_Integer),
|
|
"not an int value");
|
|
if ((mUnit == eStyleUnit_Enumerated) || (mUnit == eStyleUnit_Integer)) {
|
|
return mValue.mInt;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
inline float nsStyleCoord::GetPercentValue() const {
|
|
NS_ASSERTION(mUnit == eStyleUnit_Percent, "not a percent value");
|
|
if (mUnit == eStyleUnit_Percent) {
|
|
return mValue.mFloat;
|
|
}
|
|
return 0.0f;
|
|
}
|
|
|
|
inline float nsStyleCoord::GetFactorValue() const {
|
|
NS_ASSERTION(mUnit == eStyleUnit_Factor, "not a factor value");
|
|
if (mUnit == eStyleUnit_Factor) {
|
|
return mValue.mFloat;
|
|
}
|
|
return 0.0f;
|
|
}
|
|
|
|
inline float nsStyleCoord::GetFactorOrPercentValue() const {
|
|
NS_ASSERTION(mUnit == eStyleUnit_Factor || mUnit == eStyleUnit_Percent,
|
|
"not a percent or factor value");
|
|
if (mUnit == eStyleUnit_Factor || mUnit == eStyleUnit_Percent) {
|
|
return mValue.mFloat;
|
|
}
|
|
return 0.0f;
|
|
}
|
|
|
|
inline float nsStyleCoord::GetAngleValue() const {
|
|
MOZ_ASSERT(mUnit == eStyleUnit_Degree);
|
|
return mValue.mFloat;
|
|
}
|
|
|
|
inline float nsStyleCoord::GetFlexFractionValue() const {
|
|
NS_ASSERTION(mUnit == eStyleUnit_FlexFraction, "not a fr value");
|
|
if (mUnit == eStyleUnit_FlexFraction) {
|
|
return mValue.mFloat;
|
|
}
|
|
return 0.0f;
|
|
}
|
|
|
|
inline nsStyleCoord::Calc* nsStyleCoord::GetCalcValue() const {
|
|
NS_ASSERTION(IsCalcUnit(), "not a pointer value");
|
|
if (IsCalcUnit()) {
|
|
return AsCalcValue(mValue);
|
|
}
|
|
return nullptr;
|
|
}
|
|
|
|
/* static */ inline void nsStyleCoord::Reset(nsStyleUnit& aUnit,
|
|
nsStyleUnion& aValue) {
|
|
MOZ_ASSERT(aUnit <= eStyleUnit_MAX,
|
|
"calling Reset on uninitialized nsStyleCoord?");
|
|
|
|
switch (aUnit) {
|
|
case eStyleUnit_Calc:
|
|
static_cast<Calc*>(aValue.mPointer)->Release();
|
|
break;
|
|
default:
|
|
MOZ_ASSERT(!IsPointerUnit(aUnit), "check pointer refcounting logic");
|
|
}
|
|
|
|
aUnit = eStyleUnit_Null;
|
|
aValue.mInt = 0;
|
|
}
|
|
|
|
/* static */ inline void nsStyleCoord::SetValue(
|
|
nsStyleUnit& aUnit, nsStyleUnion& aValue, nsStyleUnit aOtherUnit,
|
|
const nsStyleUnion& aOtherValue) {
|
|
Reset(aUnit, aValue);
|
|
InitWithValue(aUnit, aValue, aOtherUnit, aOtherValue);
|
|
}
|
|
|
|
/* static */ inline void nsStyleCoord::InitWithValue(
|
|
nsStyleUnit& aUnit, nsStyleUnion& aValue, nsStyleUnit aOtherUnit,
|
|
const nsStyleUnion& aOtherValue) {
|
|
aUnit = aOtherUnit;
|
|
aValue = aOtherValue;
|
|
|
|
switch (aUnit) {
|
|
case eStyleUnit_Calc:
|
|
static_cast<Calc*>(aValue.mPointer)->AddRef();
|
|
break;
|
|
default:
|
|
MOZ_ASSERT(!IsPointerUnit(aUnit), "check pointer refcounting logic");
|
|
}
|
|
}
|
|
|
|
/* static */ inline void nsStyleCoord::SetValue(nsStyleUnit& aUnit,
|
|
nsStyleUnion& aValue,
|
|
const nsStyleCoord& aOther) {
|
|
SetValue(aUnit, aValue, aOther.mUnit, aOther.mValue);
|
|
}
|
|
|
|
/* static */ inline void nsStyleCoord::InitWithValue(
|
|
nsStyleUnit& aUnit, nsStyleUnion& aValue, const nsStyleCoord& aOther) {
|
|
InitWithValue(aUnit, aValue, aOther.mUnit, aOther.mValue);
|
|
}
|
|
|
|
// -------------------------
|
|
// nsStyleSides inlines
|
|
//
|
|
inline bool nsStyleSides::operator!=(const nsStyleSides& aOther) const {
|
|
return !((*this) == aOther);
|
|
}
|
|
|
|
inline nsStyleUnit nsStyleSides::GetUnit(mozilla::Side aSide) const {
|
|
return (nsStyleUnit)mUnits[aSide];
|
|
}
|
|
|
|
inline nsStyleUnit nsStyleSides::GetLeftUnit() const {
|
|
return GetUnit(mozilla::eSideLeft);
|
|
}
|
|
|
|
inline nsStyleUnit nsStyleSides::GetTopUnit() const {
|
|
return GetUnit(mozilla::eSideTop);
|
|
}
|
|
|
|
inline nsStyleUnit nsStyleSides::GetRightUnit() const {
|
|
return GetUnit(mozilla::eSideRight);
|
|
}
|
|
|
|
inline nsStyleUnit nsStyleSides::GetBottomUnit() const {
|
|
return GetUnit(mozilla::eSideBottom);
|
|
}
|
|
|
|
inline nsStyleCoord nsStyleSides::Get(mozilla::Side aSide) const {
|
|
return nsStyleCoord(mValues[aSide], nsStyleUnit(mUnits[aSide]));
|
|
}
|
|
|
|
inline nsStyleCoord nsStyleSides::GetLeft() const {
|
|
return Get(mozilla::eSideLeft);
|
|
}
|
|
|
|
inline nsStyleCoord nsStyleSides::GetTop() const {
|
|
return Get(mozilla::eSideTop);
|
|
}
|
|
|
|
inline nsStyleCoord nsStyleSides::GetRight() const {
|
|
return Get(mozilla::eSideRight);
|
|
}
|
|
|
|
inline nsStyleCoord nsStyleSides::GetBottom() const {
|
|
return Get(mozilla::eSideBottom);
|
|
}
|
|
|
|
inline void nsStyleSides::Set(mozilla::Side aSide, const nsStyleCoord& aCoord) {
|
|
nsStyleCoord::SetValue(mUnits[aSide], mValues[aSide], aCoord);
|
|
}
|
|
|
|
inline void nsStyleSides::SetLeft(const nsStyleCoord& aCoord) {
|
|
Set(mozilla::eSideLeft, aCoord);
|
|
}
|
|
|
|
inline void nsStyleSides::SetTop(const nsStyleCoord& aCoord) {
|
|
Set(mozilla::eSideTop, aCoord);
|
|
}
|
|
|
|
inline void nsStyleSides::SetRight(const nsStyleCoord& aCoord) {
|
|
Set(mozilla::eSideRight, aCoord);
|
|
}
|
|
|
|
inline void nsStyleSides::SetBottom(const nsStyleCoord& aCoord) {
|
|
Set(mozilla::eSideBottom, aCoord);
|
|
}
|
|
#endif /* nsStyleCoord_h___ */
|