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gecko-dev/layout/style/nsCSSValue.cpp

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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
*
* 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 Netscape are
* Copyright (C) 1998 Netscape Communications Corporation. All
* Rights Reserved.
*
* Contributor(s):
*/
#include "nsCSSValue.h"
#include "nsString.h"
#include "nsCSSProps.h"
#include "nsUnitConversion.h"
//#include "nsStyleConsts.h"
nsCSSValue::nsCSSValue(nsCSSUnit aUnit)
: mUnit(aUnit)
{
NS_ASSERTION(aUnit <= eCSSUnit_Normal, "not a valueless unit");
if (aUnit > eCSSUnit_Normal) {
mUnit = eCSSUnit_Null;
}
mValue.mInt = 0;
}
nsCSSValue::nsCSSValue(PRInt32 aValue, nsCSSUnit aUnit)
: mUnit(aUnit)
{
NS_ASSERTION((eCSSUnit_Integer == aUnit) ||
(eCSSUnit_Enumerated == aUnit), "not an int value");
if ((eCSSUnit_Integer == aUnit) ||
(eCSSUnit_Enumerated == aUnit)) {
mValue.mInt = aValue;
}
else {
mUnit = eCSSUnit_Null;
mValue.mInt = 0;
}
}
nsCSSValue::nsCSSValue(float aValue, nsCSSUnit aUnit)
: mUnit(aUnit)
{
NS_ASSERTION(eCSSUnit_Percent <= aUnit, "not a float value");
if (eCSSUnit_Percent <= aUnit) {
mValue.mFloat = aValue;
}
else {
mUnit = eCSSUnit_Null;
mValue.mInt = 0;
}
}
nsCSSValue::nsCSSValue(const nsString& aValue, nsCSSUnit aUnit)
: mUnit(aUnit)
{
NS_ASSERTION((eCSSUnit_String <= aUnit) && (aUnit <= eCSSUnit_Counters), "not a string value");
if ((eCSSUnit_String <= aUnit) && (aUnit <= eCSSUnit_Counters)) {
mValue.mString = aValue.ToNewString();
}
else {
mUnit = eCSSUnit_Null;
mValue.mInt = 0;
}
}
nsCSSValue::nsCSSValue(nscolor aValue)
: mUnit(eCSSUnit_Color)
{
mValue.mColor = aValue;
}
nsCSSValue::nsCSSValue(const nsCSSValue& aCopy)
: mUnit(aCopy.mUnit)
{
if ((eCSSUnit_String <= mUnit) && (mUnit <= eCSSUnit_Counters)) {
if (nsnull != aCopy.mValue.mString) {
mValue.mString = (aCopy.mValue.mString)->ToNewString();
}
else {
mValue.mString = nsnull;
}
}
else if ((eCSSUnit_Integer <= mUnit) && (mUnit <= eCSSUnit_Enumerated)) {
mValue.mInt = aCopy.mValue.mInt;
}
else if (eCSSUnit_Color == mUnit){
mValue.mColor = aCopy.mValue.mColor;
}
else {
mValue.mFloat = aCopy.mValue.mFloat;
}
}
nsCSSValue::~nsCSSValue(void)
{
Reset();
}
nsCSSValue& nsCSSValue::operator=(const nsCSSValue& aCopy)
{
Reset();
mUnit = aCopy.mUnit;
if ((eCSSUnit_String <= mUnit) && (mUnit <= eCSSUnit_Counters)) {
if (nsnull != aCopy.mValue.mString) {
mValue.mString = (aCopy.mValue.mString)->ToNewString();
}
}
else if ((eCSSUnit_Integer <= mUnit) && (mUnit <= eCSSUnit_Enumerated)) {
mValue.mInt = aCopy.mValue.mInt;
}
else if (eCSSUnit_Color == mUnit){
mValue.mColor = aCopy.mValue.mColor;
}
else {
mValue.mFloat = aCopy.mValue.mFloat;
}
return *this;
}
PRBool nsCSSValue::operator==(const nsCSSValue& aOther) const
{
if (mUnit == aOther.mUnit) {
if ((eCSSUnit_String <= mUnit) && (mUnit <= eCSSUnit_Counters)) {
if (nsnull == mValue.mString) {
if (nsnull == aOther.mValue.mString) {
return PR_TRUE;
}
}
else if (nsnull != aOther.mValue.mString) {
return mValue.mString->Equals(*(aOther.mValue.mString));
}
}
else if ((eCSSUnit_Integer <= mUnit) && (mUnit <= eCSSUnit_Enumerated)) {
return PRBool(mValue.mInt == aOther.mValue.mInt);
}
else if (eCSSUnit_Color == mUnit){
return PRBool(mValue.mColor == aOther.mValue.mColor);
}
else {
return PRBool(mValue.mFloat == aOther.mValue.mFloat);
}
}
return PR_FALSE;
}
nscoord nsCSSValue::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 nsCSSValue::Reset(void)
{
if ((eCSSUnit_String <= mUnit) && (mUnit <= eCSSUnit_Counters) &&
(nsnull != mValue.mString)) {
delete mValue.mString;
}
mUnit = eCSSUnit_Null;
mValue.mInt = 0;
};
void nsCSSValue::SetIntValue(PRInt32 aValue, nsCSSUnit aUnit)
{
NS_ASSERTION((eCSSUnit_Integer == aUnit) ||
(eCSSUnit_Enumerated == aUnit), "not an int value");
Reset();
if ((eCSSUnit_Integer == aUnit) ||
(eCSSUnit_Enumerated == aUnit)) {
mUnit = aUnit;
mValue.mInt = aValue;
}
}
void nsCSSValue::SetPercentValue(float aValue)
{
Reset();
mUnit = eCSSUnit_Percent;
mValue.mFloat = aValue;
}
void nsCSSValue::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 nsCSSValue::SetStringValue(const nsString& aValue, nsCSSUnit aUnit)
{
NS_ASSERTION((eCSSUnit_String <= aUnit) && (aUnit <= eCSSUnit_Counters), "not a string unit");
Reset();
if ((eCSSUnit_String <= aUnit) && (aUnit <= eCSSUnit_Counters)) {
mUnit = aUnit;
mValue.mString = aValue.ToNewString();
}
}
void nsCSSValue::SetColorValue(nscolor aValue)
{
Reset();
mUnit = eCSSUnit_Color;
mValue.mColor = aValue;
}
void nsCSSValue::SetAutoValue(void)
{
Reset();
mUnit = eCSSUnit_Auto;
}
void nsCSSValue::SetInheritValue(void)
{
Reset();
mUnit = eCSSUnit_Inherit;
}
void nsCSSValue::SetNoneValue(void)
{
Reset();
mUnit = eCSSUnit_None;
}
void nsCSSValue::SetNormalValue(void)
{
Reset();
mUnit = eCSSUnit_Normal;
}
void nsCSSValue::AppendToString(nsString& aBuffer, nsCSSProperty aPropID) const
{
if (eCSSUnit_Null == mUnit) {
return;
}
if (-1 < aPropID) {
aBuffer.Append(nsCSSProps::GetStringValue(aPropID));
aBuffer.Append(": ");
}
if ((eCSSUnit_String <= mUnit) && (mUnit <= eCSSUnit_Counters)) {
switch (mUnit) {
case eCSSUnit_URL: aBuffer.Append("url("); break;
case eCSSUnit_Attr: aBuffer.Append("attr("); break;
case eCSSUnit_Counter: aBuffer.Append("counter("); break;
case eCSSUnit_Counters: aBuffer.Append("counters("); break;
default: break;
}
if (nsnull != mValue.mString) {
aBuffer.Append('"');
aBuffer.Append(*(mValue.mString));
aBuffer.Append('"');
}
else {
aBuffer.Append("null str");
}
}
else if ((eCSSUnit_Integer <= mUnit) && (mUnit <= eCSSUnit_Enumerated)) {
aBuffer.Append(mValue.mInt, 10);
aBuffer.Append("[0x");
aBuffer.Append(mValue.mInt, 16);
aBuffer.Append(']');
}
else if (eCSSUnit_Color == mUnit){
aBuffer.Append("(0x");
aBuffer.Append(NS_GET_R(mValue.mColor), 16);
aBuffer.Append(" 0x");
aBuffer.Append(NS_GET_G(mValue.mColor), 16);
aBuffer.Append(" 0x");
aBuffer.Append(NS_GET_B(mValue.mColor), 16);
aBuffer.Append(" 0x");
aBuffer.Append(NS_GET_A(mValue.mColor), 16);
aBuffer.Append(')');
}
else if (eCSSUnit_Percent == mUnit) {
aBuffer.Append(mValue.mFloat * 100.0f);
}
else if (eCSSUnit_Percent < mUnit) {
aBuffer.Append(mValue.mFloat);
}
switch (mUnit) {
case eCSSUnit_Null: break;
case eCSSUnit_Auto: aBuffer.Append("auto"); break;
case eCSSUnit_Inherit: aBuffer.Append("inherit"); break;
case eCSSUnit_None: aBuffer.Append("none"); break;
case eCSSUnit_Normal: aBuffer.Append("normal"); break;
case eCSSUnit_String: break;
case eCSSUnit_URL:
case eCSSUnit_Attr:
case eCSSUnit_Counter:
case eCSSUnit_Counters: aBuffer.Append(')'); break;
case eCSSUnit_Integer: aBuffer.Append("int"); break;
case eCSSUnit_Enumerated: aBuffer.Append("enum"); break;
case eCSSUnit_Color: aBuffer.Append("rbga"); break;
case eCSSUnit_Percent: aBuffer.Append("%"); break;
case eCSSUnit_Number: aBuffer.Append("#"); break;
case eCSSUnit_Inch: aBuffer.Append("in"); break;
case eCSSUnit_Foot: aBuffer.Append("ft"); break;
case eCSSUnit_Mile: aBuffer.Append("mi"); break;
case eCSSUnit_Millimeter: aBuffer.Append("mm"); break;
case eCSSUnit_Centimeter: aBuffer.Append("cm"); break;
case eCSSUnit_Meter: aBuffer.Append("m"); break;
case eCSSUnit_Kilometer: aBuffer.Append("km"); break;
case eCSSUnit_Point: aBuffer.Append("pt"); break;
case eCSSUnit_Pica: aBuffer.Append("pc"); break;
case eCSSUnit_Didot: aBuffer.Append("dt"); break;
case eCSSUnit_Cicero: aBuffer.Append("cc"); break;
case eCSSUnit_EM: aBuffer.Append("em"); break;
case eCSSUnit_EN: aBuffer.Append("en"); break;
case eCSSUnit_XHeight: aBuffer.Append("ex"); break;
case eCSSUnit_CapHeight: aBuffer.Append("cap"); break;
case eCSSUnit_Char: aBuffer.Append("ch"); break;
case eCSSUnit_Pixel: aBuffer.Append("px"); break;
case eCSSUnit_Degree: aBuffer.Append("deg"); break;
case eCSSUnit_Grad: aBuffer.Append("grad"); break;
case eCSSUnit_Radian: aBuffer.Append("rad"); break;
case eCSSUnit_Hertz: aBuffer.Append("Hz"); break;
case eCSSUnit_Kilohertz: aBuffer.Append("kHz"); break;
case eCSSUnit_Seconds: aBuffer.Append("s"); break;
case eCSSUnit_Milliseconds: aBuffer.Append("ms"); break;
}
aBuffer.Append(' ');
}
void nsCSSValue::ToString(nsString& aBuffer, nsCSSProperty aPropID) const
{
aBuffer.Truncate();
AppendToString(aBuffer, aPropID);
}
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