Index: Source/core/html/StepRange.cpp |
diff --git a/Source/core/html/StepRange.cpp b/Source/core/html/StepRange.cpp |
deleted file mode 100644 |
index cc3768b56fcd0a094ddd7272900630743739ef92..0000000000000000000000000000000000000000 |
--- a/Source/core/html/StepRange.cpp |
+++ /dev/null |
@@ -1,170 +0,0 @@ |
-/* |
- * Copyright (C) 2006, 2007, 2008, 2009, 2010 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 "core/html/StepRange.h" |
- |
-#include "HTMLNames.h" |
-#include "core/html/parser/HTMLParserIdioms.h" |
-#include "wtf/MathExtras.h" |
-#include "wtf/text/WTFString.h" |
-#include <float.h> |
- |
-using namespace std; |
- |
-namespace WebCore { |
- |
-using namespace HTMLNames; |
- |
-StepRange::StepRange() |
- : m_maximum(100) |
- , m_minimum(0) |
- , m_step(1) |
- , m_stepBase(0) |
- , m_hasStep(false) |
-{ |
-} |
- |
-StepRange::StepRange(const StepRange& stepRange) |
- : m_maximum(stepRange.m_maximum) |
- , m_minimum(stepRange.m_minimum) |
- , m_step(stepRange.m_step) |
- , m_stepBase(stepRange.m_stepBase) |
- , m_stepDescription(stepRange.m_stepDescription) |
- , m_hasStep(stepRange.m_hasStep) |
-{ |
-} |
- |
-StepRange::StepRange(const Decimal& stepBase, const Decimal& minimum, const Decimal& maximum, const Decimal& step, const StepDescription& stepDescription) |
- : m_maximum(maximum) |
- , m_minimum(minimum) |
- , m_step(step.isFinite() ? step : 1) |
- , m_stepBase(stepBase.isFinite() ? stepBase : 1) |
- , m_stepDescription(stepDescription) |
- , m_hasStep(step.isFinite()) |
-{ |
- ASSERT(m_maximum.isFinite()); |
- ASSERT(m_minimum.isFinite()); |
- ASSERT(m_step.isFinite()); |
- ASSERT(m_stepBase.isFinite()); |
-} |
- |
-Decimal StepRange::acceptableError() const |
-{ |
- // FIXME: We should use DBL_MANT_DIG instead of FLT_MANT_DIG regarding to HTML5 specification. |
- DEFINE_STATIC_LOCAL(const Decimal, twoPowerOfFloatMantissaBits, (Decimal::Positive, 0, UINT64_C(1) << FLT_MANT_DIG)); |
- return m_stepDescription.stepValueShouldBe == StepValueShouldBeReal ? m_step / twoPowerOfFloatMantissaBits : Decimal(0); |
-} |
- |
-Decimal StepRange::alignValueForStep(const Decimal& currentValue, const Decimal& newValue) const |
-{ |
- DEFINE_STATIC_LOCAL(const Decimal, tenPowerOf21, (Decimal::Positive, 21, 1)); |
- if (newValue >= tenPowerOf21) |
- return newValue; |
- |
- return stepMismatch(currentValue) ? newValue : roundByStep(newValue, m_stepBase); |
-} |
- |
-Decimal StepRange::clampValue(const Decimal& value) const |
-{ |
- const Decimal inRangeValue = max(m_minimum, min(value, m_maximum)); |
- if (!m_hasStep) |
- return inRangeValue; |
- // Rounds inRangeValue to minimum + N * step. |
- const Decimal roundedValue = roundByStep(inRangeValue, m_minimum); |
- const Decimal clampedValue = roundedValue > m_maximum ? roundedValue - m_step : roundedValue; |
- ASSERT(clampedValue >= m_minimum); |
- ASSERT(clampedValue <= m_maximum); |
- return clampedValue; |
-} |
- |
-Decimal StepRange::parseStep(AnyStepHandling anyStepHandling, const StepDescription& stepDescription, const String& stepString) |
-{ |
- if (stepString.isEmpty()) |
- return stepDescription.defaultValue(); |
- |
- if (equalIgnoringCase(stepString, "any")) { |
- switch (anyStepHandling) { |
- case RejectAny: |
- return Decimal::nan(); |
- case AnyIsDefaultStep: |
- return stepDescription.defaultValue(); |
- default: |
- ASSERT_NOT_REACHED(); |
- } |
- } |
- |
- Decimal step = parseToDecimalForNumberType(stepString); |
- if (!step.isFinite() || step <= 0) |
- return stepDescription.defaultValue(); |
- |
- switch (stepDescription.stepValueShouldBe) { |
- case StepValueShouldBeReal: |
- step *= stepDescription.stepScaleFactor; |
- break; |
- case ParsedStepValueShouldBeInteger: |
- // For date, month, and week, the parsed value should be an integer for some types. |
- step = max(step.round(), Decimal(1)); |
- step *= stepDescription.stepScaleFactor; |
- break; |
- case ScaledStepValueShouldBeInteger: |
- // For datetime, datetime-local, time, the result should be an integer. |
- step *= stepDescription.stepScaleFactor; |
- step = max(step.round(), Decimal(1)); |
- break; |
- default: |
- ASSERT_NOT_REACHED(); |
- } |
- |
- ASSERT(step > 0); |
- return step; |
-} |
- |
-Decimal StepRange::roundByStep(const Decimal& value, const Decimal& base) const |
-{ |
- return base + ((value - base) / m_step).round() * m_step; |
-} |
- |
-bool StepRange::stepMismatch(const Decimal& valueForCheck) const |
-{ |
- if (!m_hasStep) |
- return false; |
- if (!valueForCheck.isFinite()) |
- return false; |
- const Decimal value = (valueForCheck - m_stepBase).abs(); |
- if (!value.isFinite()) |
- return false; |
- // Decimal's fractional part size is DBL_MAN_DIG-bit. If the current value |
- // is greater than step*2^DBL_MANT_DIG, the following computation for |
- // remainder makes no sense. |
- DEFINE_STATIC_LOCAL(const Decimal, twoPowerOfDoubleMantissaBits, (Decimal::Positive, 0, UINT64_C(1) << DBL_MANT_DIG)); |
- if (value / twoPowerOfDoubleMantissaBits > m_step) |
- return false; |
- // The computation follows HTML5 4.10.7.2.10 `The step attribute' : |
- // ... that number subtracted from the step base is not an integral multiple |
- // of the allowed value step, the element is suffering from a step mismatch. |
- const Decimal remainder = (value - m_step * (value / m_step).round()).abs(); |
- // Accepts erros in lower fractional part which IEEE 754 single-precision |
- // can't represent. |
- const Decimal computedAcceptableError = acceptableError(); |
- return computedAcceptableError < remainder && remainder < (m_step - computedAcceptableError); |
-} |
- |
-} // namespace WebCore |