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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 19:33:14 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 19:33:14 +0000 |
commit | 36d22d82aa202bb199967e9512281e9a53db42c9 (patch) | |
tree | 105e8c98ddea1c1e4784a60a5a6410fa416be2de /layout/style/nsCSSValue.cpp | |
parent | Initial commit. (diff) | |
download | firefox-esr-36d22d82aa202bb199967e9512281e9a53db42c9.tar.xz firefox-esr-36d22d82aa202bb199967e9512281e9a53db42c9.zip |
Adding upstream version 115.7.0esr.upstream/115.7.0esr
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'layout/style/nsCSSValue.cpp')
-rw-r--r-- | layout/style/nsCSSValue.cpp | 162 |
1 files changed, 162 insertions, 0 deletions
diff --git a/layout/style/nsCSSValue.cpp b/layout/style/nsCSSValue.cpp new file mode 100644 index 0000000000..97740d098e --- /dev/null +++ b/layout/style/nsCSSValue.cpp @@ -0,0 +1,162 @@ +/* -*- 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/. */ + +/* representation of simple property values within CSS declarations */ + +#include "nsCSSValue.h" + +#include "mozilla/CORSMode.h" +#include "mozilla/FontPropertyTypes.h" +#include "mozilla/ServoBindings.h" +#include "mozilla/ServoStyleSet.h" +#include "mozilla/ServoTypes.h" +#include "mozilla/StyleSheetInlines.h" +#include "mozilla/Likely.h" +#include "mozilla/MemoryReporting.h" +#include "mozilla/css/ImageLoader.h" +#include "gfxFontConstants.h" +#include "imgRequestProxy.h" +#include "mozilla/dom/Document.h" +#include "nsCSSProps.h" +#include "nsNetUtil.h" +#include "nsPresContext.h" +#include "nsStyleUtil.h" +#include "nsDeviceContext.h" +#include "nsContentUtils.h" + +using namespace mozilla; +using namespace mozilla::css; +using namespace mozilla::dom; + +nsCSSValue::nsCSSValue(int32_t aValue, nsCSSUnit aUnit) : mUnit(aUnit) { + MOZ_ASSERT(aUnit == eCSSUnit_Integer || aUnit == eCSSUnit_Enumerated, + "not an int value"); + if (aUnit == eCSSUnit_Integer || aUnit == eCSSUnit_Enumerated) { + mValue.mInt = aValue; + } else { + mUnit = eCSSUnit_Null; + mValue.mInt = 0; + } +} + +nsCSSValue::nsCSSValue(float aValue, nsCSSUnit aUnit) : mUnit(aUnit) { + MOZ_ASSERT(eCSSUnit_Percent <= aUnit, "not a float value"); + if (eCSSUnit_Percent <= aUnit) { + mValue.mFloat = aValue; + MOZ_ASSERT(!std::isnan(mValue.mFloat)); + } else { + mUnit = eCSSUnit_Null; + mValue.mInt = 0; + } +} + +nsCSSValue::nsCSSValue(const nsCSSValue& aCopy) : mUnit(aCopy.mUnit) { + if (eCSSUnit_Percent <= mUnit) { + mValue.mFloat = aCopy.mValue.mFloat; + MOZ_ASSERT(!std::isnan(mValue.mFloat)); + } else if (eCSSUnit_Integer <= mUnit && mUnit <= eCSSUnit_Enumerated) { + mValue.mInt = aCopy.mValue.mInt; + } else { + MOZ_ASSERT_UNREACHABLE("unknown unit"); + } +} + +nsCSSValue& nsCSSValue::operator=(const nsCSSValue& aCopy) { + if (this != &aCopy) { + this->~nsCSSValue(); + new (this) nsCSSValue(aCopy); + } + return *this; +} + +nsCSSValue& nsCSSValue::operator=(nsCSSValue&& aOther) { + MOZ_ASSERT(this != &aOther, "Self assigment with rvalue reference"); + + Reset(); + mUnit = aOther.mUnit; + mValue = aOther.mValue; + aOther.mUnit = eCSSUnit_Null; + + return *this; +} + +bool nsCSSValue::operator==(const nsCSSValue& aOther) const { + if (mUnit != aOther.mUnit) { + return false; + } + if ((eCSSUnit_Integer <= mUnit) && (mUnit <= eCSSUnit_Enumerated)) { + return mValue.mInt == aOther.mValue.mInt; + } + return mValue.mFloat == aOther.mValue.mFloat; +} + +double nsCSSValue::GetAngleValueInDegrees() const { + // Note that this extends the value from float to double. + return GetAngleValue(); +} + +double nsCSSValue::GetAngleValueInRadians() const { + return GetAngleValueInDegrees() * M_PI / 180.0; +} + +nscoord nsCSSValue::GetPixelLength() const { + MOZ_ASSERT(IsPixelLengthUnit(), "not a fixed length unit"); + + double scaleFactor; + switch (mUnit) { + case eCSSUnit_Pixel: + return nsPresContext::CSSPixelsToAppUnits(mValue.mFloat); + case eCSSUnit_Pica: + scaleFactor = 16.0; + break; + case eCSSUnit_Point: + scaleFactor = 4 / 3.0; + break; + case eCSSUnit_Inch: + scaleFactor = 96.0; + break; + case eCSSUnit_Millimeter: + scaleFactor = 96 / 25.4; + break; + case eCSSUnit_Centimeter: + scaleFactor = 96 / 2.54; + break; + case eCSSUnit_Quarter: + scaleFactor = 96 / 101.6; + break; + default: + NS_ERROR("should never get here"); + return 0; + } + return nsPresContext::CSSPixelsToAppUnits(float(mValue.mFloat * scaleFactor)); +} + +void nsCSSValue::SetIntValue(int32_t aValue, nsCSSUnit aUnit) { + MOZ_ASSERT(aUnit == eCSSUnit_Integer || aUnit == eCSSUnit_Enumerated, + "not an int value"); + Reset(); + if (aUnit == eCSSUnit_Integer || aUnit == eCSSUnit_Enumerated) { + mUnit = aUnit; + mValue.mInt = aValue; + } +} + +void nsCSSValue::SetPercentValue(float aValue) { + Reset(); + mUnit = eCSSUnit_Percent; + mValue.mFloat = aValue; + MOZ_ASSERT(!std::isnan(mValue.mFloat)); +} + +void nsCSSValue::SetFloatValue(float aValue, nsCSSUnit aUnit) { + MOZ_ASSERT(IsFloatUnit(aUnit), "not a float value"); + Reset(); + if (IsFloatUnit(aUnit)) { + mUnit = aUnit; + mValue.mFloat = aValue; + MOZ_ASSERT(!std::isnan(mValue.mFloat)); + } +} |