// The types to pass to ParseColorComponent. These correspond to the
// various datatypes that can go within rgb().
internal bool ParseColor(ref nsCSSValue aValue)
{
if (!GetToken(true)) {
{ if (!mSuppressErrors) mReporter.ReportUnexpected("PEColorEOF"); };
return false;
}
nsCSSToken tk = mToken;
var rgba = new nscolor();
switch (tk.mType) {
case nsCSSTokenType.ID:
case nsCSSTokenType.Hash:
// #xxyyzz
if (nscolor.HexToRGB(tk.mIdentStr, ref rgba)) {
aValue.SetColorValue(rgba);
return true;
}
break;
case nsCSSTokenType.Ident:
if (nscolor.ColorNameToRGB(tk.mIdentStr, ref rgba)) {
aValue.SetStringValue(tk.mIdentStr, nsCSSUnit.Ident);
return true;
}
else {
nsCSSKeyword keyword = nsCSSKeywords.LookupKeyword(tk.mIdentStr);
if (nsCSSKeyword.UNKNOWN < keyword) { // known keyword
int32_t value = 0;
if (nsCSSProps.FindKeyword(keyword, nsCSSProps.kColorKTable, ref value)) {
aValue.SetIntValue(value, nsCSSUnit.EnumColor);
return true;
}
}
}
break;
case nsCSSTokenType.Function:
if (mToken.mIdentStr.LowerCaseEqualsLiteral("rgb")) {
// rgb ( component , component , component )
uint8_t r = 0, g = 0, b = 0;
int32_t type = COLOR_TYPE_UNKNOWN;
if (ParseColorComponent(ref r, ref type, ',') &&
ParseColorComponent(ref g, ref type, ',') &&
ParseColorComponent(ref b, ref type, ')')) {
aValue.SetColorValue(nscolor.RGB(r,g,b));
return true;
}
SkipUntil(')');
return false;
}
else if (mToken.mIdentStr.LowerCaseEqualsLiteral("-moz-rgba") ||
mToken.mIdentStr.LowerCaseEqualsLiteral("rgba")) {
// rgba ( component , component , component , opacity )
uint8_t r = 0, g = 0, b = 0, a = 0;
int32_t type = COLOR_TYPE_UNKNOWN;
if (ParseColorComponent(ref r, ref type, ',') &&
ParseColorComponent(ref g, ref type, ',') &&
ParseColorComponent(ref b, ref type, ',') &&
ParseColorOpacity(ref a)) {
aValue.SetColorValue(nscolor.RGBA(r, g, b, a));
return true;
}
SkipUntil(')');
return false;
}
else if (mToken.mIdentStr.LowerCaseEqualsLiteral("hsl")) {
// hsl ( hue , saturation , lightness )
// "hue" is a number, "saturation" and "lightness" are percentages.
if (ParseHSLColor(ref rgba, ')')) {
aValue.SetColorValue(rgba);
return true;
}
SkipUntil(')');
return false;
}
else if (mToken.mIdentStr.LowerCaseEqualsLiteral("-moz-hsla") ||
mToken.mIdentStr.LowerCaseEqualsLiteral("hsla")) {
// hsla ( hue , saturation , lightness , opacity )
// "hue" is a number, "saturation" and "lightness" are percentages,
// "opacity" is a number.
uint8_t a = 0;
if (ParseHSLColor(ref rgba, ',') &&
ParseColorOpacity(ref a)) {
aValue.SetColorValue(nscolor.RGBA(rgba.R, rgba.G,
rgba.B, a));
return true;
}
SkipUntil(')');
return false;
}
break;
default:
break;
}
// try 'xxyyzz' without '#' prefix for compatibility with IE and Nav4x (bug 23236 and 45804)
// TODO support hashless colors
// It's not a color
{ if (!mSuppressErrors) mReporter.ReportUnexpected("PEColorNotColor", mToken); };
UngetToken();
return false;
}
internal bool ParseBackground()
{
using (/*var compound = */new nsAutoParseCompoundProperty(this)) {
// background-color can only be set once, so it's not a list.
var color = new nsCSSValue();
// Check first for inherit/initial.
if (ParseVariant(ref color, VARIANT_INHERIT, null)) {
// must be alone
if (!ExpectEndProperty()) {
return false;
}
AppendValues(nsCSSProps.SubpropertyEntryFor(nsCSSProperty.Background), color);
return true;
}
nsCSSValue image = new nsCSSValue(), repeat = new nsCSSValue(), attachment = new nsCSSValue(), clip = new nsCSSValue(), origin = new nsCSSValue(), position = new nsCSSValue(), size = new nsCSSValue();
var state = new BackgroundParseState(color, image.SetListValue(),
repeat.SetPairListValue(),
attachment.SetListValue(), clip.SetListValue(),
origin.SetListValue(), position.SetListValue(),
size.SetPairListValue());
for (;;) {
if (!ParseBackgroundItem(state)) {
return false;
}
if (CheckEndProperty()) {
break;
}
// If we saw a color, this must be the last item.
if (color.GetUnit() != nsCSSUnit.Null) {
{ if (!mSuppressErrors) mReporter.ReportUnexpected("PEExpectEndValue", mToken); };
return false;
}
// Otherwise, a comma is mandatory.
if (!ExpectSymbol(',', true)) {
return false;
}
// Chain another entry on all the lists.
state.mImage.mNext = new nsCSSValueList();
state.mImage = state.mImage.mNext;
state.mRepeat.mNext = new nsCSSValuePairList();
state.mRepeat = state.mRepeat.mNext;
state.mAttachment.mNext = new nsCSSValueList();
state.mAttachment = state.mAttachment.mNext;
state.mClip.mNext = new nsCSSValueList();
state.mClip = state.mClip.mNext;
state.mOrigin.mNext = new nsCSSValueList();
state.mOrigin = state.mOrigin.mNext;
state.mPosition.mNext = new nsCSSValueList();
state.mPosition = state.mPosition.mNext;
state.mSize.mNext = new nsCSSValuePairList();
state.mSize = state.mSize.mNext;
}
// If we get to this point without seeing a color, provide a default.
if (color.GetUnit() == nsCSSUnit.Null) {
color.SetColorValue(nscolor.RGBA(0,0,0,0));
}
AppendValue(nsCSSProperty.BackgroundImage, image);
AppendValue(nsCSSProperty.BackgroundRepeat, repeat);
AppendValue(nsCSSProperty.BackgroundAttachment, attachment);
AppendValue(nsCSSProperty.BackgroundClip, clip);
AppendValue(nsCSSProperty.BackgroundOrigin, origin);
AppendValue(nsCSSProperty.BackgroundPosition, position);
AppendValue(nsCSSProperty.BackgroundSize, size);
AppendValue(nsCSSProperty.BackgroundColor, color);
return true;
}
}
