| /* |
| * (C) 1999-2003 Lars Knoll (knoll@kde.org) |
| * Copyright (C) 2004, 2005, 2006, 2007, 2008 Apple Inc. All rights reserved. |
| * |
| * This library is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU Library General Public |
| * License as published by the Free Software Foundation; either |
| * version 2 of the License, or (at your option) any later version. |
| * |
| * This library is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| * Library General Public License for more details. |
| * |
| * You should have received a copy of the GNU Library General Public License |
| * along with this library; see the file COPYING.LIB. If not, write to |
| * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, |
| * Boston, MA 02110-1301, USA. |
| */ |
| |
| #include "config.h" |
| #include "CSSPrimitiveValue.h" |
| |
| #include "CSSHelper.h" |
| #include "CSSValueKeywords.h" |
| #include "Color.h" |
| #include "Counter.h" |
| #include "DashboardRegion.h" |
| #include "ExceptionCode.h" |
| #include "Pair.h" |
| #include "RenderStyle.h" |
| #include <wtf/ASCIICType.h> |
| |
| using namespace WTF; |
| |
| namespace WebCore { |
| |
| // "ident" from the CSS tokenizer, minus backslash-escape sequences |
| static bool isCSSTokenizerIdentifier(const String& string) |
| { |
| const UChar* p = string.characters(); |
| const UChar* end = p + string.length(); |
| |
| // -? |
| if (p != end && p[0] == '-') |
| ++p; |
| |
| // {nmstart} |
| if (p == end || !(p[0] == '_' || p[0] >= 128 || isASCIIAlpha(p[0]))) |
| return false; |
| ++p; |
| |
| // {nmchar}* |
| for (; p != end; ++p) { |
| if (!(p[0] == '_' || p[0] == '-' || p[0] >= 128 || isASCIIAlphanumeric(p[0]))) |
| return false; |
| } |
| |
| return true; |
| } |
| |
| // "url" from the CSS tokenizer, minus backslash-escape sequences |
| static bool isCSSTokenizerURL(const String& string) |
| { |
| const UChar* p = string.characters(); |
| const UChar* end = p + string.length(); |
| |
| for (; p != end; ++p) { |
| UChar c = p[0]; |
| switch (c) { |
| case '!': |
| case '#': |
| case '$': |
| case '%': |
| case '&': |
| break; |
| default: |
| if (c < '*') |
| return false; |
| if (c <= '~') |
| break; |
| if (c < 128) |
| return false; |
| } |
| } |
| |
| return true; |
| } |
| |
| // We use single quotes for now because markup.cpp uses double quotes. |
| static String quoteString(const String& string) |
| { |
| // FIXME: Also need to escape characters like '\n'. |
| String s = string; |
| s.replace('\\', "\\\\"); |
| s.replace('\'', "\\'"); |
| return "'" + s + "'"; |
| } |
| |
| static String quoteStringIfNeeded(const String& string) |
| { |
| return isCSSTokenizerIdentifier(string) ? string : quoteString(string); |
| } |
| |
| static String quoteURLIfNeeded(const String& string) |
| { |
| return isCSSTokenizerURL(string) ? string : quoteString(string); |
| } |
| |
| CSSPrimitiveValue::CSSPrimitiveValue() |
| : m_type(0) |
| { |
| } |
| |
| CSSPrimitiveValue::CSSPrimitiveValue(int ident) |
| : m_type(CSS_IDENT) |
| { |
| m_value.ident = ident; |
| } |
| |
| CSSPrimitiveValue::CSSPrimitiveValue(double num, UnitTypes type) |
| : m_type(type) |
| { |
| m_value.num = num; |
| } |
| |
| CSSPrimitiveValue::CSSPrimitiveValue(const String& str, UnitTypes type) |
| : m_type(type) |
| { |
| if ((m_value.string = str.impl())) |
| m_value.string->ref(); |
| } |
| |
| CSSPrimitiveValue::CSSPrimitiveValue(RGBA32 color) |
| : m_type(CSS_RGBCOLOR) |
| { |
| m_value.rgbcolor = color; |
| } |
| |
| CSSPrimitiveValue::CSSPrimitiveValue(const Length& length) |
| { |
| switch (length.type()) { |
| case Auto: |
| m_type = CSS_IDENT; |
| m_value.ident = CSS_VAL_AUTO; |
| break; |
| case WebCore::Fixed: |
| m_type = CSS_PX; |
| m_value.num = length.value(); |
| break; |
| case Intrinsic: |
| m_type = CSS_IDENT; |
| m_value.ident = CSS_VAL_INTRINSIC; |
| break; |
| case MinIntrinsic: |
| m_type = CSS_IDENT; |
| m_value.ident = CSS_VAL_MIN_INTRINSIC; |
| break; |
| case Percent: |
| m_type = CSS_PERCENTAGE; |
| m_value.num = length.percent(); |
| break; |
| case Relative: |
| case Static: |
| ASSERT_NOT_REACHED(); |
| break; |
| } |
| } |
| |
| void CSSPrimitiveValue::init(PassRefPtr<Counter> c) |
| { |
| m_type = CSS_COUNTER; |
| m_value.counter = c.releaseRef(); |
| } |
| |
| void CSSPrimitiveValue::init(PassRefPtr<Rect> r) |
| { |
| m_type = CSS_RECT; |
| m_value.rect = r.releaseRef(); |
| } |
| |
| void CSSPrimitiveValue::init(PassRefPtr<DashboardRegion> r) |
| { |
| m_type = CSS_DASHBOARD_REGION; |
| m_value.region = r.releaseRef(); |
| } |
| |
| void CSSPrimitiveValue::init(PassRefPtr<Pair> p) |
| { |
| m_type = CSS_PAIR; |
| m_value.pair = p.releaseRef(); |
| } |
| |
| CSSPrimitiveValue::~CSSPrimitiveValue() |
| { |
| cleanup(); |
| } |
| |
| void CSSPrimitiveValue::cleanup() |
| { |
| switch (m_type) { |
| case CSS_STRING: |
| case CSS_URI: |
| case CSS_ATTR: |
| if (m_value.string) |
| m_value.string->deref(); |
| break; |
| case CSS_COUNTER: |
| m_value.counter->deref(); |
| break; |
| case CSS_RECT: |
| m_value.rect->deref(); |
| break; |
| case CSS_PAIR: |
| m_value.pair->deref(); |
| break; |
| case CSS_DASHBOARD_REGION: |
| if (m_value.region) |
| m_value.region->deref(); |
| break; |
| default: |
| break; |
| } |
| |
| m_type = 0; |
| } |
| |
| int CSSPrimitiveValue::computeLengthInt(RenderStyle* style) |
| { |
| double result = computeLengthDouble(style); |
| |
| // This conversion is imprecise, often resulting in values of, e.g., 44.99998. We |
| // need to go ahead and round if we're really close to the next integer value. |
| result += result < 0 ? -0.01 : +0.01; |
| |
| if (result > INT_MAX || result < INT_MIN) |
| return 0; |
| return static_cast<int>(result); |
| } |
| |
| int CSSPrimitiveValue::computeLengthInt(RenderStyle* style, double multiplier) |
| { |
| double result = multiplier * computeLengthDouble(style); |
| |
| // This conversion is imprecise, often resulting in values of, e.g., 44.99998. We |
| // need to go ahead and round if we're really close to the next integer value. |
| result += result < 0 ? -0.01 : +0.01; |
| |
| if (result > INT_MAX || result < INT_MIN) |
| return 0; |
| return static_cast<int>(result); |
| } |
| |
| const int intMaxForLength = 0x7ffffff; // max value for a 28-bit int |
| const int intMinForLength = (-0x7ffffff - 1); // min value for a 28-bit int |
| |
| // Lengths expect an int that is only 28-bits, so we have to check for a different overflow. |
| int CSSPrimitiveValue::computeLengthIntForLength(RenderStyle* style) |
| { |
| double result = computeLengthDouble(style); |
| |
| // This conversion is imprecise, often resulting in values of, e.g., 44.99998. We |
| // need to go ahead and round if we're really close to the next integer value. |
| result += result < 0 ? -0.01 : +0.01; |
| |
| if (result > intMaxForLength || result < intMinForLength) |
| return 0; |
| return static_cast<int>(result); |
| } |
| |
| // Lengths expect an int that is only 28-bits, so we have to check for a different overflow. |
| int CSSPrimitiveValue::computeLengthIntForLength(RenderStyle* style, double multiplier) |
| { |
| double result = multiplier * computeLengthDouble(style); |
| |
| // This conversion is imprecise, often resulting in values of, e.g., 44.99998. We |
| // need to go ahead and round if we're really close to the next integer value. |
| result += result < 0 ? -0.01 : +0.01; |
| |
| if (result > intMaxForLength || result < intMinForLength) |
| return 0; |
| return static_cast<int>(result); |
| } |
| |
| short CSSPrimitiveValue::computeLengthShort(RenderStyle* style) |
| { |
| double result = computeLengthDouble(style); |
| |
| // This conversion is imprecise, often resulting in values of, e.g., 44.99998. We |
| // need to go ahead and round if we're really close to the next integer value. |
| result += result < 0 ? -0.01 : +0.01; |
| |
| if (result > SHRT_MAX || result < SHRT_MIN) |
| return 0; |
| return static_cast<short>(result); |
| } |
| |
| short CSSPrimitiveValue::computeLengthShort(RenderStyle* style, double multiplier) |
| { |
| double result = multiplier * computeLengthDouble(style); |
| |
| // This conversion is imprecise, often resulting in values of, e.g., 44.99998. We |
| // need to go ahead and round if we're really close to the next integer value. |
| result += result < 0 ? -0.01 : +0.01; |
| |
| if (result > SHRT_MAX || result < SHRT_MIN) |
| return 0; |
| return static_cast<short>(result); |
| } |
| |
| float CSSPrimitiveValue::computeLengthFloat(RenderStyle* style, bool applyZoomFactor) |
| { |
| return static_cast<float>(computeLengthDouble(style, applyZoomFactor)); |
| } |
| |
| double CSSPrimitiveValue::computeLengthDouble(RenderStyle* style, bool applyZoomFactor) |
| { |
| unsigned short type = primitiveType(); |
| |
| double factor = 1.0; |
| switch (type) { |
| case CSS_EMS: |
| factor = applyZoomFactor ? style->fontDescription().computedSize() : style->fontDescription().specifiedSize(); |
| break; |
| case CSS_EXS: |
| // FIXME: We have a bug right now where the zoom will be applied multiple times to EX units. |
| // We really need to compute EX using fontMetrics for the original specifiedSize and not use |
| // our actual constructed rendering font. |
| factor = style->font().xHeight(); |
| break; |
| case CSS_PX: |
| break; |
| case CSS_CM: |
| factor = cssPixelsPerInch / 2.54; // (2.54 cm/in) |
| break; |
| case CSS_MM: |
| factor = cssPixelsPerInch / 25.4; |
| break; |
| case CSS_IN: |
| factor = cssPixelsPerInch; |
| break; |
| case CSS_PT: |
| factor = cssPixelsPerInch / 72.0; |
| break; |
| case CSS_PC: |
| // 1 pc == 12 pt |
| factor = cssPixelsPerInch * 12.0 / 72.0; |
| break; |
| default: |
| return -1.0; |
| } |
| |
| return getDoubleValue() * factor; |
| } |
| |
| void CSSPrimitiveValue::setFloatValue(unsigned short unitType, double floatValue, ExceptionCode& ec) |
| { |
| ec = 0; |
| |
| // FIXME: check if property supports this type |
| if (m_type > CSS_DIMENSION) { |
| ec = SYNTAX_ERR; |
| return; |
| } |
| |
| cleanup(); |
| |
| //if(m_type > CSS_DIMENSION) throw DOMException(INVALID_ACCESS_ERR); |
| m_value.num = floatValue; |
| m_type = unitType; |
| } |
| |
| double scaleFactorForConversion(unsigned short unitType) |
| { |
| double factor = 1.0; |
| switch (unitType) { |
| case CSSPrimitiveValue::CSS_PX: |
| break; |
| case CSSPrimitiveValue::CSS_CM: |
| factor = cssPixelsPerInch / 2.54; // (2.54 cm/in) |
| break; |
| case CSSPrimitiveValue::CSS_MM: |
| factor = cssPixelsPerInch / 25.4; |
| break; |
| case CSSPrimitiveValue::CSS_IN: |
| factor = cssPixelsPerInch; |
| break; |
| case CSSPrimitiveValue::CSS_PT: |
| factor = cssPixelsPerInch / 72.0; |
| break; |
| case CSSPrimitiveValue::CSS_PC: |
| factor = cssPixelsPerInch * 12.0 / 72.0; // 1 pc == 12 pt |
| break; |
| default: |
| break; |
| } |
| |
| return factor; |
| } |
| |
| double CSSPrimitiveValue::getDoubleValue(unsigned short unitType, ExceptionCode& ec) |
| { |
| ec = 0; |
| if (m_type < CSS_NUMBER || m_type > CSS_DIMENSION || unitType < CSS_NUMBER || unitType > CSS_DIMENSION) { |
| ec = INVALID_ACCESS_ERR; |
| return 0.0; |
| } |
| |
| if (unitType == m_type || unitType < CSS_PX || unitType > CSS_PC) |
| return m_value.num; |
| |
| double convertedValue = m_value.num; |
| |
| // First convert the value from m_type into CSSPixels |
| double factor = scaleFactorForConversion(m_type); |
| convertedValue *= factor; |
| |
| // Now convert from CSSPixels to the specified unitType |
| factor = scaleFactorForConversion(unitType); |
| convertedValue /= factor; |
| |
| return convertedValue; |
| } |
| |
| double CSSPrimitiveValue::getDoubleValue(unsigned short unitType) |
| { |
| if (m_type < CSS_NUMBER || m_type > CSS_DIMENSION || unitType < CSS_NUMBER || unitType > CSS_DIMENSION) |
| return 0; |
| |
| if (unitType == m_type || unitType < CSS_PX || unitType > CSS_PC) |
| return m_value.num; |
| |
| double convertedValue = m_value.num; |
| |
| // First convert the value from m_type into CSSPixels |
| double factor = scaleFactorForConversion(m_type); |
| convertedValue *= factor; |
| |
| // Now convert from CSSPixels to the specified unitType |
| factor = scaleFactorForConversion(unitType); |
| convertedValue /= factor; |
| |
| return convertedValue; |
| } |
| |
| |
| void CSSPrimitiveValue::setStringValue(unsigned short stringType, const String& stringValue, ExceptionCode& ec) |
| { |
| ec = 0; |
| |
| //if(m_type < CSS_STRING) throw DOMException(INVALID_ACCESS_ERR); |
| //if(m_type > CSS_ATTR) throw DOMException(INVALID_ACCESS_ERR); |
| if (m_type < CSS_STRING || m_type > CSS_ATTR) { |
| ec = SYNTAX_ERR; |
| return; |
| } |
| |
| cleanup(); |
| |
| if (stringType != CSS_IDENT) { |
| m_value.string = stringValue.impl(); |
| m_value.string->ref(); |
| m_type = stringType; |
| } |
| // FIXME: parse ident |
| } |
| |
| String CSSPrimitiveValue::getStringValue(ExceptionCode& ec) const |
| { |
| ec = 0; |
| switch (m_type) { |
| case CSS_STRING: |
| case CSS_ATTR: |
| case CSS_URI: |
| return m_value.string; |
| case CSS_IDENT: |
| return getValueName(m_value.ident); |
| default: |
| ec = INVALID_ACCESS_ERR; |
| break; |
| } |
| |
| return String(); |
| } |
| |
| String CSSPrimitiveValue::getStringValue() const |
| { |
| switch (m_type) { |
| case CSS_STRING: |
| case CSS_ATTR: |
| case CSS_URI: |
| return m_value.string; |
| case CSS_IDENT: |
| return getValueName(m_value.ident); |
| default: |
| break; |
| } |
| |
| return String(); |
| } |
| |
| Counter* CSSPrimitiveValue::getCounterValue(ExceptionCode& ec) const |
| { |
| ec = 0; |
| if (m_type != CSS_COUNTER) { |
| ec = INVALID_ACCESS_ERR; |
| return 0; |
| } |
| |
| return m_value.counter; |
| } |
| |
| Rect* CSSPrimitiveValue::getRectValue(ExceptionCode& ec) const |
| { |
| ec = 0; |
| if (m_type != CSS_RECT) { |
| ec = INVALID_ACCESS_ERR; |
| return 0; |
| } |
| |
| return m_value.rect; |
| } |
| |
| unsigned CSSPrimitiveValue::getRGBColorValue(ExceptionCode& ec) const |
| { |
| ec = 0; |
| if (m_type != CSS_RGBCOLOR) { |
| ec = INVALID_ACCESS_ERR; |
| return 0; |
| } |
| |
| return m_value.rgbcolor; |
| } |
| |
| Pair* CSSPrimitiveValue::getPairValue(ExceptionCode& ec) const |
| { |
| ec = 0; |
| if (m_type != CSS_PAIR) { |
| ec = INVALID_ACCESS_ERR; |
| return 0; |
| } |
| |
| return m_value.pair; |
| } |
| |
| unsigned short CSSPrimitiveValue::cssValueType() const |
| { |
| return CSS_PRIMITIVE_VALUE; |
| } |
| |
| bool CSSPrimitiveValue::parseString(const String& /*string*/, bool /*strict*/) |
| { |
| // FIXME |
| return false; |
| } |
| |
| int CSSPrimitiveValue::getIdent() |
| { |
| if (m_type != CSS_IDENT) |
| return 0; |
| return m_value.ident; |
| } |
| |
| String CSSPrimitiveValue::cssText() const |
| { |
| // FIXME: return the original value instead of a generated one (e.g. color |
| // name if it was specified) - check what spec says about this |
| String text; |
| switch (m_type) { |
| case CSS_UNKNOWN: |
| // FIXME |
| break; |
| case CSS_NUMBER: |
| text = String::number(m_value.num); |
| break; |
| case CSS_PERCENTAGE: |
| text = String::format("%.6lg%%", m_value.num); |
| break; |
| case CSS_EMS: |
| text = String::format("%.6lgem", m_value.num); |
| break; |
| case CSS_EXS: |
| text = String::format("%.6lgex", m_value.num); |
| break; |
| case CSS_PX: |
| text = String::format("%.6lgpx", m_value.num); |
| break; |
| case CSS_CM: |
| text = String::format("%.6lgcm", m_value.num); |
| break; |
| case CSS_MM: |
| text = String::format("%.6lgmm", m_value.num); |
| break; |
| case CSS_IN: |
| text = String::format("%.6lgin", m_value.num); |
| break; |
| case CSS_PT: |
| text = String::format("%.6lgpt", m_value.num); |
| break; |
| case CSS_PC: |
| text = String::format("%.6lgpc", m_value.num); |
| break; |
| case CSS_DEG: |
| text = String::format("%.6lgdeg", m_value.num); |
| break; |
| case CSS_RAD: |
| text = String::format("%.6lgrad", m_value.num); |
| break; |
| case CSS_GRAD: |
| text = String::format("%.6lggrad", m_value.num); |
| break; |
| case CSS_MS: |
| text = String::format("%.6lgms", m_value.num); |
| break; |
| case CSS_S: |
| text = String::format("%.6lgs", m_value.num); |
| break; |
| case CSS_HZ: |
| text = String::format("%.6lghz", m_value.num); |
| break; |
| case CSS_KHZ: |
| text = String::format("%.6lgkhz", m_value.num); |
| break; |
| case CSS_DIMENSION: |
| // FIXME |
| break; |
| case CSS_STRING: |
| text = quoteStringIfNeeded(m_value.string); |
| break; |
| case CSS_URI: |
| text = "url(" + quoteURLIfNeeded(m_value.string) + ")"; |
| break; |
| case CSS_IDENT: |
| text = getValueName(m_value.ident); |
| break; |
| case CSS_ATTR: |
| // FIXME |
| break; |
| case CSS_COUNTER: |
| text = "counter("; |
| text += String::number(m_value.num); |
| text += ")"; |
| // FIXME: Add list-style and separator |
| break; |
| case CSS_RECT: { |
| Rect* rectVal = getRectValue(); |
| text = "rect("; |
| text += rectVal->top()->cssText() + " "; |
| text += rectVal->right()->cssText() + " "; |
| text += rectVal->bottom()->cssText() + " "; |
| text += rectVal->left()->cssText() + ")"; |
| break; |
| } |
| case CSS_RGBCOLOR: { |
| Color color(m_value.rgbcolor); |
| text = (color.alpha() < 0xFF) ? "rgba(" : "rgb("; |
| text += String::number(color.red()) + ", "; |
| text += String::number(color.green()) + ", "; |
| text += String::number(color.blue()); |
| if (color.alpha() < 0xFF) |
| text += ", " + String::number(static_cast<float>(color.alpha()) / 0xFF); |
| text += ")"; |
| break; |
| } |
| case CSS_PAIR: |
| text = m_value.pair->first()->cssText(); |
| text += " "; |
| text += m_value.pair->second()->cssText(); |
| break; |
| case CSS_DASHBOARD_REGION: |
| for (DashboardRegion* region = getDashboardRegionValue(); region; region = region->m_next.get()) { |
| if (!text.isEmpty()) |
| text.append(' '); |
| text += "dashboard-region("; |
| text += region->m_label; |
| if (region->m_isCircle) |
| text += " circle"; |
| else if (region->m_isRectangle) |
| text += " rectangle"; |
| else |
| break; |
| if (region->top()->m_type == CSS_IDENT && region->top()->getIdent() == CSS_VAL_INVALID) { |
| ASSERT(region->right()->m_type == CSS_IDENT); |
| ASSERT(region->bottom()->m_type == CSS_IDENT); |
| ASSERT(region->left()->m_type == CSS_IDENT); |
| ASSERT(region->right()->getIdent() == CSS_VAL_INVALID); |
| ASSERT(region->bottom()->getIdent() == CSS_VAL_INVALID); |
| ASSERT(region->left()->getIdent() == CSS_VAL_INVALID); |
| } else { |
| text.append(' '); |
| text += region->top()->cssText() + " "; |
| text += region->right()->cssText() + " "; |
| text += region->bottom()->cssText() + " "; |
| text += region->left()->cssText(); |
| } |
| text += ")"; |
| } |
| break; |
| } |
| return text; |
| } |
| |
| } // namespace WebCore |
