String Color::serializedAsCSSComponentValue() const
{
StringBuilder result;
result.reserveCapacity(32);
bool colorHasAlpha = hasAlpha();
if (colorHasAlpha)
result.appendLiteral("rgba(");
else
result.appendLiteral("rgb(");
result.appendNumber(static_cast<unsigned char>(red()));
result.appendLiteral(", ");
result.appendNumber(static_cast<unsigned char>(green()));
result.appendLiteral(", ");
result.appendNumber(static_cast<unsigned char>(blue()));
if (colorHasAlpha) {
result.appendLiteral(", ");
NumberToStringBuffer buffer;
const char* alphaString = numberToFixedPrecisionString(alpha() / 255.0f, 6, buffer, true);
result.append(alphaString, strlen(alphaString));
}
result.append(')');
return result.toString();
}
TEST(DtoaTest, TestNumberToFixedPrecisionString_DontTruncateTrailingZeros)
{
NumberToStringBuffer buffer;
// There should be a trailing decimal and zeros.
numberToFixedPrecisionString(0.0, 6, buffer, false);
EXPECT_STREQ("0.00000", buffer);
}
TEST(DtoaTest, TestNumberToFixedPrecisionString)
{
NumberToStringBuffer buffer;
// There should be no trailing decimal or zeros.
numberToFixedPrecisionString(0.0, 6, buffer, true);
EXPECT_STREQ("0", buffer);
// Up to 6 leading zeros.
numberToFixedPrecisionString(0.00000123123123, 6, buffer, true);
EXPECT_STREQ("0.00000123123", buffer);
numberToFixedPrecisionString(0.000000123123123, 6, buffer, true);
EXPECT_STREQ("1.23123e-7", buffer);
// Up to 6 places before the decimal.
numberToFixedPrecisionString(123123.123, 6, buffer, true);
EXPECT_STREQ("123123", buffer);
numberToFixedPrecisionString(1231231.23, 6, buffer, true);
EXPECT_STREQ("1.23123e+6", buffer);
// Don't strip trailing zeros in exponents.
// http://crbug.com/545711
numberToFixedPrecisionString(0.000000000123123, 6, buffer, true);
EXPECT_STREQ("1.23123e-10", buffer);
// FIXME: Trailing zeros before exponents should be stripped.
numberToFixedPrecisionString(0.0000000001, 6, buffer, true);
EXPECT_STREQ("1.00000e-10", buffer);
}
// toPrecision converts a number to a string, takeing an argument specifying a
// number of significant figures to round the significand to. For positive
// exponent, all values that can be represented using a decimal fraction will
// be, e.g. when rounding to 3 s.f. any value up to 999 will be formated as a
// decimal, whilst 1000 is converted to the exponential representation 1.00e+3.
// For negative exponents values >= 1e-6 are formated as decimal fractions,
// with smaller values converted to exponential representation.
EncodedJSValue JSC_HOST_CALL numberProtoFuncToPrecision(ExecState* exec)
{
double x;
if (!toThisNumber(exec->thisValue(), x))
return throwVMTypeError(exec);
// Get the argument.
int significantFigures;
bool isUndefined;
if (!getIntegerArgumentInRange(exec, 1, 21, significantFigures, isUndefined))
return throwVMError(exec, createRangeError(exec, ASCIILiteral("toPrecision() argument must be between 1 and 21")));
// To precision called with no argument is treated as ToString.
if (isUndefined)
return JSValue::encode(jsString(exec, String::numberToStringECMAScript(x)));
// Handle NaN and Infinity.
if (!std::isfinite(x))
return JSValue::encode(jsNontrivialString(exec, String::numberToStringECMAScript(x)));
NumberToStringBuffer buffer;
return JSValue::encode(jsString(exec, String(numberToFixedPrecisionString(x, significantFigures, buffer))));
}
String String::number(double number, unsigned precision, TrailingZerosTruncatingPolicy trailingZerosTruncatingPolicy)
{
NumberToStringBuffer buffer;
return String(numberToFixedPrecisionString(number, precision, buffer, trailingZerosTruncatingPolicy == TruncateTrailingZeros));
}
ALWAYS_INLINE String CSSPrimitiveValue::formatNumberForcustomCSSText() const
{
switch (m_primitiveUnitType) {
case CSS_UNKNOWN:
return String();
case CSS_NUMBER:
case CSS_PARSER_INTEGER:
return formatNumberValue("");
case CSS_PERCENTAGE:
return formatNumberValue("%");
case CSS_EMS:
return formatNumberValue("em");
case CSS_EXS:
return formatNumberValue("ex");
case CSS_REMS:
return formatNumberValue("rem");
case CSS_CHS:
return formatNumberValue("ch");
case CSS_PX:
return formatNumberValue("px");
case CSS_CM:
return formatNumberValue("cm");
#if ENABLE(CSS_IMAGE_RESOLUTION) || ENABLE(RESOLUTION_MEDIA_QUERY)
case CSS_DPPX:
return formatNumberValue("dppx");
case CSS_DPI:
return formatNumberValue("dpi");
case CSS_DPCM:
return formatNumberValue("dpcm");
#endif
case CSS_MM:
return formatNumberValue("mm");
case CSS_IN:
return formatNumberValue("in");
case CSS_PT:
return formatNumberValue("pt");
case CSS_PC:
return formatNumberValue("pc");
case CSS_DEG:
return formatNumberValue("deg");
case CSS_RAD:
return formatNumberValue("rad");
case CSS_GRAD:
return formatNumberValue("grad");
case CSS_MS:
return formatNumberValue("ms");
case CSS_S:
return formatNumberValue("s");
case CSS_HZ:
return formatNumberValue("hz");
case CSS_KHZ:
return formatNumberValue("khz");
case CSS_TURN:
return formatNumberValue("turn");
case CSS_FR:
return formatNumberValue("fr");
case CSS_DIMENSION:
// FIXME: We currently don't handle CSS_DIMENSION properly as we don't store
// the actual dimension, just the numeric value as a string.
case CSS_STRING:
return quoteCSSStringIfNeeded(m_value.string);
case CSS_URI:
return "url(" + quoteCSSURLIfNeeded(m_value.string) + ')';
case CSS_VALUE_ID:
return valueName(m_value.valueID);
case CSS_PROPERTY_ID:
return propertyName(m_value.propertyID);
case CSS_ATTR: {
StringBuilder result;
result.reserveCapacity(6 + m_value.string->length());
result.appendLiteral("attr(");
result.append(m_value.string);
result.append(')');
return result.toString();
}
case CSS_COUNTER_NAME:
return "counter(" + String(m_value.string) + ')';
case CSS_COUNTER: {
StringBuilder result;
String separator = m_value.counter->separator();
if (separator.isEmpty())
result.appendLiteral("counter(");
else
result.appendLiteral("counters(");
result.append(m_value.counter->identifier());
if (!separator.isEmpty()) {
result.appendLiteral(", ");
result.append(quoteCSSStringIfNeeded(separator));
}
String listStyle = m_value.counter->listStyle();
if (!listStyle.isEmpty()) {
result.appendLiteral(", ");
result.append(listStyle);
}
result.append(')');
return result.toString();
}
case CSS_RECT:
return getRectValue()->cssText();
case CSS_QUAD:
return getQuadValue()->cssText();
case CSS_RGBCOLOR:
case CSS_PARSER_HEXCOLOR: {
RGBA32 rgbColor = m_value.rgbcolor;
if (m_primitiveUnitType == CSS_PARSER_HEXCOLOR)
Color::parseHexColor(m_value.string, rgbColor);
Color color(rgbColor);
Vector<LChar> result;
result.reserveInitialCapacity(32);
bool colorHasAlpha = color.hasAlpha();
if (colorHasAlpha)
result.append("rgba(", 5);
else
result.append("rgb(", 4);
appendNumber(result, static_cast<unsigned char>(color.red()));
result.append(", ", 2);
appendNumber(result, static_cast<unsigned char>(color.green()));
result.append(", ", 2);
appendNumber(result, static_cast<unsigned char>(color.blue()));
if (colorHasAlpha) {
result.append(", ", 2);
NumberToStringBuffer buffer;
const char* alphaString = numberToFixedPrecisionString(color.alpha() / 255.0f, 6, buffer, true);
result.append(alphaString, strlen(alphaString));
}
result.append(')');
return String::adopt(result);
}
case CSS_PAIR:
return getPairValue()->cssText();
#if ENABLE(DASHBOARD_SUPPORT)
case CSS_DASHBOARD_REGION: {
StringBuilder result;
for (DashboardRegion* region = getDashboardRegionValue(); region; region = region->m_next.get()) {
if (!result.isEmpty())
result.append(' ');
result.appendLiteral("dashboard-region(");
result.append(region->m_label);
if (region->m_isCircle)
result.appendLiteral(" circle");
else if (region->m_isRectangle)
result.appendLiteral(" rectangle");
else
break;
if (region->top()->m_primitiveUnitType == CSS_VALUE_ID && region->top()->getValueID() == CSSValueInvalid) {
ASSERT(region->right()->m_primitiveUnitType == CSS_VALUE_ID);
ASSERT(region->bottom()->m_primitiveUnitType == CSS_VALUE_ID);
ASSERT(region->left()->m_primitiveUnitType == CSS_VALUE_ID);
ASSERT(region->right()->getValueID() == CSSValueInvalid);
ASSERT(region->bottom()->getValueID() == CSSValueInvalid);
ASSERT(region->left()->getValueID() == CSSValueInvalid);
} else {
result.append(' ');
result.append(region->top()->cssText());
result.append(' ');
result.append(region->right()->cssText());
result.append(' ');
result.append(region->bottom()->cssText());
result.append(' ');
result.append(region->left()->cssText());
}
result.append(')');
}
return result.toString();
}
#endif
case CSS_PARSER_OPERATOR: {
char c = static_cast<char>(m_value.parserOperator);
return String(&c, 1U);
}
case CSS_PARSER_IDENTIFIER:
return quoteCSSStringIfNeeded(m_value.string);
case CSS_CALC:
return m_value.calc->cssText();
case CSS_SHAPE:
return m_value.shape->cssText();
case CSS_VW:
return formatNumberValue("vw");
case CSS_VH:
return formatNumberValue("vh");
case CSS_VMIN:
return formatNumberValue("vmin");
case CSS_VMAX:
return formatNumberValue("vmax");
}
return String();
}
