зеркало из https://github.com/mozilla/gecko-dev.git
257 строки
7.2 KiB
C++
257 строки
7.2 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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*
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* The contents of this file are subject to the Netscape Public
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* License Version 1.1 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.mozilla.org/NPL/
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*
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* Software distributed under the License is distributed on an "AS
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* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
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* implied. See the License for the specific language governing
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* rights and limitations under the License.
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*
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* The Original Code is mozilla.org code.
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*
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* The Initial Developer of the Original Code is Netscape
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* Communications Corporation. Portions created by Netscape are
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* Copyright (C) 1998 Netscape Communications Corporation. All
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* Rights Reserved.
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*
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* Contributor(s):
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*/
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#ifndef nsStyleCoord_h___
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#define nsStyleCoord_h___
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#include "nscore.h"
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#include "nsCoord.h"
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#include "nsCRT.h"
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class nsString;
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enum nsStyleUnit {
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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_Inherit = 3, // (no value) value should be inherited
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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_Coord = 20, // (nscoord) value is twips
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eStyleUnit_Integer = 30, // (int) value is simple integer
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eStyleUnit_Proportional = 31, // (int) value has proportional meaning
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eStyleUnit_Enumerated = 32, // (int) value has enumerated meaning
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eStyleUnit_Chars = 33 // (int) value is number of characters
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};
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typedef union {
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PRInt32 mInt; // nscoord is a PRInt32 for now
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float mFloat;
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} nsStyleUnion;
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class nsStyleCoord {
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public:
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nsStyleCoord(nsStyleUnit aUnit = eStyleUnit_Null);
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nsStyleCoord(nscoord aValue);
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nsStyleCoord(PRInt32 aValue, nsStyleUnit aUnit);
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nsStyleCoord(float aValue, nsStyleUnit aUnit);
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nsStyleCoord(const nsStyleCoord& aCopy);
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nsStyleCoord& operator=(const nsStyleCoord& aCopy);
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PRBool operator==(const nsStyleCoord& aOther) const;
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PRBool operator!=(const nsStyleCoord& aOther) const;
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nsStyleUnit GetUnit(void) const { return mUnit; }
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nscoord GetCoordValue(void) const;
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PRInt32 GetIntValue(void) const;
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float GetPercentValue(void) const;
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float GetFactorValue(void) const;
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void GetUnionValue(nsStyleUnion& aValue) const;
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void Reset(void); // sets to null
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void SetCoordValue(nscoord aValue);
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void SetIntValue(PRInt32 aValue, nsStyleUnit aUnit);
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void SetPercentValue(float aValue);
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void SetFactorValue(float aValue);
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void SetNormalValue(void);
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void SetAutoValue(void);
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void SetInheritValue(void);
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void SetUnionValue(const nsStyleUnion& aValue, nsStyleUnit aUnit);
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void AppendToString(nsString& aBuffer) const;
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void ToString(nsString& aBuffer) const;
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public:
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nsStyleUnit mUnit;
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nsStyleUnion mValue;
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};
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class nsStyleSides {
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public:
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nsStyleSides(void);
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// nsStyleSides& operator=(const nsStyleSides& aCopy); // use compiler's version
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PRBool operator==(const nsStyleSides& aOther) const;
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PRBool operator!=(const nsStyleSides& aOther) const;
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nsStyleUnit GetLeftUnit(void) const;
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nsStyleUnit GetTopUnit(void) const;
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nsStyleUnit GetRightUnit(void) const;
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nsStyleUnit GetBottomUnit(void) const;
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nsStyleCoord& GetLeft(nsStyleCoord& aCoord) const;
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nsStyleCoord& GetTop(nsStyleCoord& aCoord) const;
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nsStyleCoord& GetRight(nsStyleCoord& aCoord) const;
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nsStyleCoord& GetBottom(nsStyleCoord& aCoord) const;
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void Reset(void);
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void SetLeft(const nsStyleCoord& aCoord);
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void SetTop(const nsStyleCoord& aCoord);
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void SetRight(const nsStyleCoord& aCoord);
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void SetBottom(const nsStyleCoord& aCoord);
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void AppendToString(nsString& aBuffer) const;
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void ToString(nsString& aBuffer) const;
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protected:
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PRUint8 mLeftUnit;
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PRUint8 mTopUnit;
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PRUint8 mRightUnit;
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PRUint8 mBottomUnit;
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nsStyleUnion mLeftValue;
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nsStyleUnion mTopValue;
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nsStyleUnion mRightValue;
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nsStyleUnion mBottomValue;
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};
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// -------------------------
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// nsStyleCoord inlines
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//
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inline PRBool nsStyleCoord::operator!=(const nsStyleCoord& aOther) const
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{
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return PRBool(! ((*this) == aOther));
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}
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inline PRInt32 nsStyleCoord::GetCoordValue(void) const
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{
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NS_ASSERTION((mUnit == eStyleUnit_Coord), "not a coord value");
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if (mUnit == eStyleUnit_Coord) {
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return mValue.mInt;
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}
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return 0;
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}
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inline PRInt32 nsStyleCoord::GetIntValue(void) const
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{
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NS_ASSERTION((mUnit == eStyleUnit_Proportional) ||
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(mUnit == eStyleUnit_Enumerated) ||
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(mUnit == eStyleUnit_Chars) ||
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(mUnit == eStyleUnit_Integer), "not an int value");
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if ((mUnit == eStyleUnit_Proportional) ||
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(mUnit == eStyleUnit_Enumerated) ||
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(mUnit == eStyleUnit_Chars) ||
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(mUnit == eStyleUnit_Integer)) {
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return mValue.mInt;
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}
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return 0;
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}
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inline float nsStyleCoord::GetPercentValue(void) const
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{
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NS_ASSERTION(mUnit == eStyleUnit_Percent, "not a percent value");
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if (mUnit == eStyleUnit_Percent) {
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return mValue.mFloat;
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}
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return 0.0f;
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}
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inline float nsStyleCoord::GetFactorValue(void) const
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{
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NS_ASSERTION(mUnit == eStyleUnit_Factor, "not a factor value");
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if (mUnit == eStyleUnit_Factor) {
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return mValue.mFloat;
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}
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return 0.0f;
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}
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inline void nsStyleCoord::GetUnionValue(nsStyleUnion& aValue) const
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{
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nsCRT::memcpy(&aValue, &mValue, sizeof(nsStyleUnion));
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}
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// -------------------------
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// nsStyleSides inlines
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//
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inline PRBool nsStyleSides::operator!=(const nsStyleSides& aOther) const
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{
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return PRBool(! ((*this) == aOther));
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}
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inline nsStyleUnit nsStyleSides::GetLeftUnit(void) const
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{
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return (nsStyleUnit)mLeftUnit;
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}
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inline nsStyleUnit nsStyleSides::GetTopUnit(void) const
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{
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return (nsStyleUnit)mTopUnit;
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}
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inline nsStyleUnit nsStyleSides::GetRightUnit(void) const
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{
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return (nsStyleUnit)mRightUnit;
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}
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inline nsStyleUnit nsStyleSides::GetBottomUnit(void) const
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{
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return (nsStyleUnit)mBottomUnit;
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}
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inline nsStyleCoord& nsStyleSides::GetLeft(nsStyleCoord& aCoord) const
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{
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aCoord.SetUnionValue(mLeftValue, (nsStyleUnit)mLeftUnit);
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return aCoord;
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}
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inline nsStyleCoord& nsStyleSides::GetTop(nsStyleCoord& aCoord) const
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{
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aCoord.SetUnionValue(mTopValue, (nsStyleUnit)mTopUnit);
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return aCoord;
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}
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inline nsStyleCoord& nsStyleSides::GetRight(nsStyleCoord& aCoord) const
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{
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aCoord.SetUnionValue(mRightValue, (nsStyleUnit)mRightUnit);
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return aCoord;
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}
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inline nsStyleCoord& nsStyleSides::GetBottom(nsStyleCoord& aCoord) const
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{
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aCoord.SetUnionValue(mBottomValue, (nsStyleUnit)mBottomUnit);
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return aCoord;
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}
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inline void nsStyleSides::SetLeft(const nsStyleCoord& aCoord)
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{
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mLeftUnit = aCoord.GetUnit();
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aCoord.GetUnionValue(mLeftValue);
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}
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inline void nsStyleSides::SetTop(const nsStyleCoord& aCoord)
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{
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mTopUnit = aCoord.GetUnit();
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aCoord.GetUnionValue(mTopValue);
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}
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inline void nsStyleSides::SetRight(const nsStyleCoord& aCoord)
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{
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mRightUnit = aCoord.GetUnit();
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aCoord.GetUnionValue(mRightValue);
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}
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inline void nsStyleSides::SetBottom(const nsStyleCoord& aCoord)
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{
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mBottomUnit = aCoord.GetUnit();
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aCoord.GetUnionValue(mBottomValue);
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}
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#endif /* nsStyleCoord_h___ */
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