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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-19 00:47:55 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-19 00:47:55 +0000
commit26a029d407be480d791972afb5975cf62c9360a6 (patch)
treef435a8308119effd964b339f76abb83a57c29483 /layout/style/nsCSSValue.h
parentInitial commit. (diff)
downloadfirefox-26a029d407be480d791972afb5975cf62c9360a6.tar.xz
firefox-26a029d407be480d791972afb5975cf62c9360a6.zip
Adding upstream version 124.0.1.upstream/124.0.1
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'layout/style/nsCSSValue.h')
-rw-r--r--layout/style/nsCSSValue.h148
1 files changed, 148 insertions, 0 deletions
diff --git a/layout/style/nsCSSValue.h b/layout/style/nsCSSValue.h
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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/. */
+
+/* representation of simple property values within CSS declarations */
+
+#ifndef nsCSSValue_h___
+#define nsCSSValue_h___
+
+#include "mozilla/Attributes.h"
+#include "mozilla/CORSMode.h"
+#include "mozilla/EnumTypeTraits.h"
+#include "mozilla/MemoryReporting.h"
+#include "mozilla/ServoBindingTypes.h"
+#include "mozilla/URLExtraData.h"
+#include "mozilla/UniquePtr.h"
+
+#include "nsCoord.h"
+#include "nsTArray.h"
+
+#include <type_traits>
+
+// XXX Avoid including this here by moving function bodies to the cpp file
+#include "mozilla/FloatingPoint.h"
+
+class imgRequestProxy;
+class nsAtom;
+class nsIContent;
+
+class nsIPrincipal;
+class nsIURI;
+class nsPresContext;
+template <class T>
+class nsPtrHashKey;
+struct RawServoCssUrlData;
+
+namespace mozilla {
+class CSSStyleSheet;
+} // namespace mozilla
+
+// Forward declaration copied here since ServoBindings.h #includes nsCSSValue.h.
+extern "C" {
+mozilla::URLExtraData* Servo_CssUrlData_GetExtraData(const RawServoCssUrlData*);
+bool Servo_CssUrlData_IsLocalRef(const RawServoCssUrlData* url);
+}
+
+enum nsCSSUnit : uint32_t {
+ eCSSUnit_Null = 0, // (n/a) null unit, value is not specified
+
+ eCSSUnit_Percent = 100, // (1.0 == 100%) value is percentage of
+ // something
+ eCSSUnit_Number = 101, // value is numeric (usually multiplier,
+ // different behavior than percent)
+
+ // Font relative measure
+ eCSSUnit_EM = 800, // == current font size
+ eCSSUnit_XHeight = 801, // distance from top of lower case x to
+ // baseline
+ eCSSUnit_Char = 802, // number of characters, used for width with
+ // monospace font
+ eCSSUnit_RootEM = 803, // == root element font size
+ eCSSUnit_Ideographic = 804, // == CJK water ideograph width
+ eCSSUnit_CapHeight = 805, // == Capital letter height
+
+ // Screen relative measure
+ eCSSUnit_Point = 900, // 4/3 of a CSS pixel
+ eCSSUnit_Inch = 901, // 96 CSS pixels
+ eCSSUnit_Millimeter = 902, // 96/25.4 CSS pixels
+ eCSSUnit_Centimeter = 903, // 96/2.54 CSS pixels
+ eCSSUnit_Pica = 904, // 12 points == 16 CSS pixls
+ eCSSUnit_Quarter = 905, // 96/101.6 CSS pixels
+ eCSSUnit_Pixel = 906, // CSS pixel unit
+
+ // Viewport percentage lengths
+ eCSSUnit_VW = 950,
+ eCSSUnit_VH = 951,
+ eCSSUnit_VMin = 952,
+ eCSSUnit_VMax = 953,
+};
+
+struct nsCSSValuePair;
+struct nsCSSValuePair_heap;
+struct nsCSSValueList;
+struct nsCSSValueList_heap;
+struct nsCSSValueSharedList;
+struct nsCSSValuePairList;
+struct nsCSSValuePairList_heap;
+
+class nsCSSValue {
+ public:
+ explicit nsCSSValue() : mUnit(eCSSUnit_Null) {}
+
+ nsCSSValue(float aValue, nsCSSUnit aUnit);
+ nsCSSValue(const nsCSSValue& aCopy);
+ nsCSSValue(nsCSSValue&& aOther) : mUnit(aOther.mUnit), mValue(aOther.mValue) {
+ aOther.mUnit = eCSSUnit_Null;
+ }
+
+ nsCSSValue& operator=(const nsCSSValue& aCopy);
+ nsCSSValue& operator=(nsCSSValue&& aCopy);
+ bool operator==(const nsCSSValue& aOther) const;
+
+ bool operator!=(const nsCSSValue& aOther) const { return !(*this == aOther); }
+
+ nsCSSUnit GetUnit() const { return mUnit; }
+ bool IsLengthUnit() const {
+ return eCSSUnit_EM <= mUnit && mUnit <= eCSSUnit_Pixel;
+ }
+ /**
+ * A "pixel" length unit is a some multiple of CSS pixels.
+ */
+ static bool IsPixelLengthUnit(nsCSSUnit aUnit) {
+ return eCSSUnit_Point <= aUnit && aUnit <= eCSSUnit_Pixel;
+ }
+ bool IsPixelLengthUnit() const { return IsPixelLengthUnit(mUnit); }
+ static bool IsPercentLengthUnit(nsCSSUnit aUnit) {
+ return aUnit == eCSSUnit_Percent;
+ }
+ static bool IsFloatUnit(nsCSSUnit aUnit) { return eCSSUnit_Number <= aUnit; }
+
+ float GetPercentValue() const {
+ MOZ_ASSERT(mUnit == eCSSUnit_Percent, "not a percent value");
+ return mValue;
+ }
+
+ float GetFloatValue() const {
+ MOZ_ASSERT(eCSSUnit_Number <= mUnit, "not a float value");
+ MOZ_ASSERT(!std::isnan(mValue));
+ return mValue;
+ }
+
+ nscoord GetPixelLength() const;
+
+ void Reset() { mUnit = eCSSUnit_Null; }
+ ~nsCSSValue() { Reset(); }
+
+ public:
+ void SetPercentValue(float aValue);
+ void SetFloatValue(float aValue, nsCSSUnit aUnit);
+
+ protected:
+ nsCSSUnit mUnit;
+ float mValue;
+};
+
+#endif /* nsCSSValue_h___ */