mirror of
https://github.com/mozilla/gecko-dev.git
synced 2024-11-02 15:15:23 +00:00
0a143da53b
Use the property list in the tables for nsRuleNode::CheckSpecifiedProperties. To reduce heap usage, redesign the storage of properties and values in nsCSSDeclaration to allocate all property-value pairs in a declaration block in a single allocation, and use temporary structures (like the old permanent structures) during parsing and modification. Replace per-property switch statements in nsCSSDeclaration with table-based code to reduce code size. b=125246 r+sr=bzbarsky
308 lines
10 KiB
C++
308 lines
10 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
|
|
/* ***** BEGIN LICENSE BLOCK *****
|
|
* Version: NPL 1.1/GPL 2.0/LGPL 2.1
|
|
*
|
|
* The contents of this file are subject to the Netscape Public License
|
|
* Version 1.1 (the "License"); you may not use this file except in
|
|
* compliance with the License. You may obtain a copy of the License at
|
|
* http://www.mozilla.org/NPL/
|
|
*
|
|
* Software distributed under the License is distributed on an "AS IS" basis,
|
|
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
|
|
* for the specific language governing rights and limitations under the
|
|
* License.
|
|
*
|
|
* The Original Code is mozilla.org code.
|
|
*
|
|
* The Initial Developer of the Original Code is
|
|
* Netscape Communications Corporation.
|
|
* Portions created by the Initial Developer are Copyright (C) 1998
|
|
* the Initial Developer. All Rights Reserved.
|
|
*
|
|
* Contributor(s):
|
|
*
|
|
*
|
|
* Alternatively, the contents of this file may be used under the terms of
|
|
* either the GNU General Public License Version 2 or later (the "GPL"), or
|
|
* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
|
|
* in which case the provisions of the GPL or the LGPL are applicable instead
|
|
* of those above. If you wish to allow use of your version of this file only
|
|
* under the terms of either the GPL or the LGPL, and not to allow others to
|
|
* use your version of this file under the terms of the NPL, indicate your
|
|
* decision by deleting the provisions above and replace them with the notice
|
|
* and other provisions required by the GPL or the LGPL. If you do not delete
|
|
* the provisions above, a recipient may use your version of this file under
|
|
* the terms of any one of the NPL, the GPL or the LGPL.
|
|
*
|
|
* ***** END LICENSE BLOCK ***** */
|
|
#ifndef nsCSSValue_h___
|
|
#define nsCSSValue_h___
|
|
|
|
#include "nsColor.h"
|
|
#include "nsString.h"
|
|
#include "nsCRT.h"
|
|
#include "nsCoord.h"
|
|
#include "nsCSSProperty.h"
|
|
#include "nsUnitConversion.h"
|
|
|
|
|
|
enum nsCSSUnit {
|
|
eCSSUnit_Null = 0, // (n/a) null unit, value is not specified
|
|
eCSSUnit_Auto = 1, // (n/a) value is algorithmic
|
|
eCSSUnit_Inherit = 2, // (n/a) value is inherited
|
|
eCSSUnit_Initial = 3, // (n/a) value is default UA value
|
|
eCSSUnit_None = 4, // (n/a) value is none
|
|
eCSSUnit_Normal = 5, // (n/a) value is normal (algorithmic, different than auto)
|
|
eCSSUnit_String = 10, // (nsString) a string value
|
|
eCSSUnit_URL = 11, // (nsString) a URL value
|
|
eCSSUnit_Attr = 12, // (nsString) a attr(string) value
|
|
eCSSUnit_Counter = 13, // (nsString) a counter(string,[string]) value
|
|
eCSSUnit_Counters = 14, // (nsString) a counters(string,string[,string]) value
|
|
eCSSUnit_Integer = 50, // (int) simple value
|
|
eCSSUnit_Enumerated = 51, // (int) value has enumerated meaning
|
|
eCSSUnit_Color = 80, // (color) an RGBA value
|
|
eCSSUnit_Percent = 90, // (float) 1.0 == 100%) value is percentage of something
|
|
eCSSUnit_Number = 91, // (float) value is numeric (usually multiplier, different behavior that percent)
|
|
|
|
// Length units - fixed
|
|
// US English
|
|
eCSSUnit_Inch = 100, // (float) Standard length
|
|
eCSSUnit_Foot = 101, // (float) 12 inches
|
|
eCSSUnit_Mile = 102, // (float) 5280 feet
|
|
|
|
// Metric
|
|
eCSSUnit_Millimeter = 207, // (float) 1/1000 meter
|
|
eCSSUnit_Centimeter = 208, // (float) 1/100 meter
|
|
eCSSUnit_Meter = 210, // (float) Standard length
|
|
eCSSUnit_Kilometer = 213, // (float) 1000 meters
|
|
|
|
// US Typographic
|
|
eCSSUnit_Point = 300, // (float) 1/72 inch
|
|
eCSSUnit_Pica = 301, // (float) 12 points == 1/6 inch
|
|
|
|
// European Typographic
|
|
eCSSUnit_Didot = 400, // (float) 15 didots == 16 points
|
|
eCSSUnit_Cicero = 401, // (float) 12 didots
|
|
|
|
// Length units - relative
|
|
// Font relative measure
|
|
eCSSUnit_EM = 800, // (float) == current font size
|
|
eCSSUnit_EN = 801, // (float) .5 em
|
|
eCSSUnit_XHeight = 802, // (float) distance from top of lower case x to baseline
|
|
eCSSUnit_CapHeight = 803, // (float) distance from top of uppercase case H to baseline
|
|
eCSSUnit_Char = 804, // (float) number of characters, used for width with monospace font
|
|
|
|
// Screen relative measure
|
|
eCSSUnit_Pixel = 900, // (float)
|
|
|
|
// Proportional Unit (for columns in tables)
|
|
eCSSUnit_Proportional = 950,
|
|
|
|
// Angular units
|
|
eCSSUnit_Degree = 1000, // (float) 360 per circle
|
|
eCSSUnit_Grad = 1001, // (float) 400 per circle
|
|
eCSSUnit_Radian = 1002, // (float) 2pi per circle
|
|
|
|
// Frequency units
|
|
eCSSUnit_Hertz = 2000, // (float)
|
|
eCSSUnit_Kilohertz = 2001, // (float)
|
|
|
|
// Time units
|
|
eCSSUnit_Seconds = 3000, // (float)
|
|
eCSSUnit_Milliseconds = 3001 // (float)
|
|
};
|
|
|
|
class nsCSSValue {
|
|
public:
|
|
// for valueless units only (null, auto, inherit, none, normal)
|
|
nsCSSValue(nsCSSUnit aUnit = eCSSUnit_Null)
|
|
: mUnit(aUnit)
|
|
{
|
|
NS_ASSERTION(aUnit <= eCSSUnit_Normal, "not a valueless unit");
|
|
if (aUnit > eCSSUnit_Normal) {
|
|
mUnit = eCSSUnit_Null;
|
|
}
|
|
mValue.mInt = 0;
|
|
}
|
|
|
|
nsCSSValue(PRInt32 aValue, nsCSSUnit aUnit);
|
|
nsCSSValue(float aValue, nsCSSUnit aUnit);
|
|
nsCSSValue(const nsAString& aValue, nsCSSUnit aUnit);
|
|
nsCSSValue(nscolor aValue);
|
|
nsCSSValue(const nsCSSValue& aCopy);
|
|
~nsCSSValue(void)
|
|
{
|
|
Reset();
|
|
}
|
|
|
|
|
|
nsCSSValue& operator=(const nsCSSValue& aCopy);
|
|
PRBool operator==(const nsCSSValue& aOther) const;
|
|
PRBool operator!=(const nsCSSValue& aOther) const;
|
|
|
|
nsCSSUnit GetUnit(void) const { return mUnit; };
|
|
PRBool IsLengthUnit(void) const
|
|
{ return PRBool((eCSSUnit_Inch <= mUnit) && (mUnit <= eCSSUnit_Proportional)); }
|
|
PRBool IsFixedLengthUnit(void) const
|
|
{ return PRBool((eCSSUnit_Inch <= mUnit) && (mUnit <= eCSSUnit_Cicero)); }
|
|
PRBool IsRelativeLengthUnit(void) const
|
|
{ return PRBool((eCSSUnit_EM <= mUnit) && (mUnit <= eCSSUnit_Proportional)); }
|
|
PRBool IsAngularUnit(void) const
|
|
{ return PRBool((eCSSUnit_Degree <= mUnit) && (mUnit <= eCSSUnit_Radian)); }
|
|
PRBool IsFrequencyUnit(void) const
|
|
{ return PRBool((eCSSUnit_Hertz <= mUnit) && (mUnit <= eCSSUnit_Kilohertz)); }
|
|
PRBool IsTimeUnit(void) const
|
|
{ return PRBool((eCSSUnit_Seconds <= mUnit) && (mUnit <= eCSSUnit_Milliseconds)); }
|
|
|
|
PRInt32 GetIntValue(void) const;
|
|
float GetPercentValue(void) const;
|
|
float GetFloatValue(void) const;
|
|
nsAString& GetStringValue(nsAString& aBuffer) const;
|
|
nscolor GetColorValue(void) const;
|
|
nscoord GetLengthTwips(void) const
|
|
{
|
|
NS_ASSERTION(IsFixedLengthUnit(), "not a fixed length unit");
|
|
|
|
if (IsFixedLengthUnit()) {
|
|
switch (mUnit) {
|
|
case eCSSUnit_Inch:
|
|
return NS_INCHES_TO_TWIPS(mValue.mFloat);
|
|
case eCSSUnit_Foot:
|
|
return NS_FEET_TO_TWIPS(mValue.mFloat);
|
|
case eCSSUnit_Mile:
|
|
return NS_MILES_TO_TWIPS(mValue.mFloat);
|
|
|
|
case eCSSUnit_Millimeter:
|
|
return NS_MILLIMETERS_TO_TWIPS(mValue.mFloat);
|
|
case eCSSUnit_Centimeter:
|
|
return NS_CENTIMETERS_TO_TWIPS(mValue.mFloat);
|
|
case eCSSUnit_Meter:
|
|
return NS_METERS_TO_TWIPS(mValue.mFloat);
|
|
case eCSSUnit_Kilometer:
|
|
return NS_KILOMETERS_TO_TWIPS(mValue.mFloat);
|
|
|
|
case eCSSUnit_Point:
|
|
return NSFloatPointsToTwips(mValue.mFloat);
|
|
case eCSSUnit_Pica:
|
|
return NS_PICAS_TO_TWIPS(mValue.mFloat);
|
|
case eCSSUnit_Didot:
|
|
return NS_DIDOTS_TO_TWIPS(mValue.mFloat);
|
|
case eCSSUnit_Cicero:
|
|
return NS_CICEROS_TO_TWIPS(mValue.mFloat);
|
|
default:
|
|
NS_ERROR("should never get here");
|
|
break;
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
void Reset(void) // sets to null
|
|
{
|
|
if ((eCSSUnit_String <= mUnit) && (mUnit <= eCSSUnit_Counters) &&
|
|
(nsnull != mValue.mString)) {
|
|
nsCRT::free(mValue.mString);
|
|
}
|
|
mUnit = eCSSUnit_Null;
|
|
mValue.mInt = 0;
|
|
}
|
|
|
|
void SetIntValue(PRInt32 aValue, nsCSSUnit aUnit);
|
|
void SetPercentValue(float aValue)
|
|
{
|
|
Reset();
|
|
mUnit = eCSSUnit_Percent;
|
|
mValue.mFloat = aValue;
|
|
}
|
|
|
|
void SetFloatValue(float aValue, nsCSSUnit aUnit)
|
|
{
|
|
NS_ASSERTION(eCSSUnit_Number <= aUnit, "not a float value");
|
|
Reset();
|
|
if (eCSSUnit_Number <= aUnit) {
|
|
mUnit = aUnit;
|
|
mValue.mFloat = aValue;
|
|
}
|
|
}
|
|
|
|
void SetStringValue(const nsAString& aValue, nsCSSUnit aUnit);
|
|
void SetColorValue(nscolor aValue);
|
|
void SetAutoValue(void);
|
|
void SetInheritValue(void);
|
|
void SetInitialValue(void);
|
|
void SetNoneValue(void);
|
|
void SetNormalValue(void);
|
|
|
|
// debugging methods only
|
|
void AppendToString(nsAString& aBuffer, nsCSSProperty aPropID = eCSSProperty_UNKNOWN) const;
|
|
void ToString(nsAString& aBuffer, nsCSSProperty aPropID = eCSSProperty_UNKNOWN) const;
|
|
|
|
protected:
|
|
nsCSSUnit mUnit;
|
|
union {
|
|
PRInt32 mInt;
|
|
float mFloat;
|
|
PRUnichar* mString;
|
|
nscolor mColor;
|
|
} mValue;
|
|
};
|
|
|
|
inline PRInt32 nsCSSValue::GetIntValue(void) const
|
|
{
|
|
NS_ASSERTION((mUnit == eCSSUnit_Integer) ||
|
|
(mUnit == eCSSUnit_Enumerated), "not an int value");
|
|
if ((mUnit == eCSSUnit_Integer) ||
|
|
(mUnit == eCSSUnit_Enumerated)) {
|
|
return mValue.mInt;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
inline float nsCSSValue::GetPercentValue(void) const
|
|
{
|
|
NS_ASSERTION((mUnit == eCSSUnit_Percent), "not a percent value");
|
|
if ((mUnit == eCSSUnit_Percent)) {
|
|
return mValue.mFloat;
|
|
}
|
|
return 0.0f;
|
|
}
|
|
|
|
inline float nsCSSValue::GetFloatValue(void) const
|
|
{
|
|
NS_ASSERTION((eCSSUnit_Number <= mUnit), "not a float value");
|
|
if ((mUnit >= eCSSUnit_Number)) {
|
|
return mValue.mFloat;
|
|
}
|
|
return 0.0f;
|
|
}
|
|
|
|
inline nsAString& nsCSSValue::GetStringValue(nsAString& aBuffer) const
|
|
{
|
|
NS_ASSERTION((eCSSUnit_String <= mUnit) && (mUnit <= eCSSUnit_Counters), "not a string value");
|
|
aBuffer.Truncate();
|
|
if ((eCSSUnit_String <= mUnit) && (mUnit <= eCSSUnit_Counters) &&
|
|
(nsnull != mValue.mString)) {
|
|
aBuffer.Append(mValue.mString);
|
|
}
|
|
return aBuffer;
|
|
}
|
|
|
|
inline nscolor nsCSSValue::GetColorValue(void) const
|
|
{
|
|
NS_ASSERTION((mUnit == eCSSUnit_Color), "not a color value");
|
|
if (mUnit == eCSSUnit_Color) {
|
|
return mValue.mColor;
|
|
}
|
|
return NS_RGB(0,0,0);
|
|
}
|
|
|
|
inline PRBool nsCSSValue::operator!=(const nsCSSValue& aOther) const
|
|
{
|
|
return PRBool(! ((*this) == aOther));
|
|
}
|
|
|
|
|
|
|
|
#endif /* nsCSSValue_h___ */
|
|
|