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Diffstat (limited to 'WebCore/platform/Length.h')
| -rw-r--r-- | WebCore/platform/Length.h | 199 |
1 files changed, 0 insertions, 199 deletions
diff --git a/WebCore/platform/Length.h b/WebCore/platform/Length.h deleted file mode 100644 index 7dd875e..0000000 --- a/WebCore/platform/Length.h +++ /dev/null @@ -1,199 +0,0 @@ -/* - Copyright (C) 1999 Lars Knoll (knoll@kde.org) - Copyright (C) 2006, 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. -*/ - -#ifndef Length_h -#define Length_h - -#include <wtf/Assertions.h> -#include <wtf/FastAllocBase.h> -#include <wtf/Forward.h> -#include <wtf/MathExtras.h> - -namespace WebCore { - -const int undefinedLength = -1; -const int percentScaleFactor = 128; -const int intMaxForLength = 0x7ffffff; // max value for a 28-bit int -const int intMinForLength = (-0x7ffffff - 1); // min value for a 28-bit int - -enum LengthType { Auto, Relative, Percent, Fixed, Static, Intrinsic, MinIntrinsic }; - -struct Length : FastAllocBase { - Length() - : m_value(0) - { - } - - Length(LengthType t) - : m_value(t) - { - } - - Length(int v, LengthType t, bool q = false) - : m_value((v * 16) | (q << 3) | t) // FIXME: Doesn't work if the passed-in value is very large! - { - ASSERT(t != Percent); - } - - Length(double v, LengthType t, bool q = false) - : m_value(static_cast<int>(v * percentScaleFactor) * 16 | (q << 3) | t) - { - ASSERT(t == Percent); - } - - bool operator==(const Length& o) const { return m_value == o.m_value; } - bool operator!=(const Length& o) const { return m_value != o.m_value; } - - int value() const { - ASSERT(type() != Percent); - return rawValue(); - } - - int rawValue() const { return (m_value & ~0xF) / 16; } - - double percent() const - { - ASSERT(type() == Percent); - return static_cast<double>(rawValue()) / percentScaleFactor; - } - - LengthType type() const { return static_cast<LengthType>(m_value & 7); } - bool quirk() const { return (m_value >> 3) & 1; } - - void setValue(LengthType t, int value) - { - ASSERT(t != Percent); - setRawValue(t, value); - } - - void setRawValue(LengthType t, int value) { m_value = value * 16 | (m_value & 0x8) | t; } - - void setValue(int value) - { - ASSERT(!value || type() != Percent); - setRawValue(value); - } - - void setRawValue(int value) { m_value = value * 16 | (m_value & 0xF); } - - void setValue(LengthType t, double value) - { - ASSERT(t == Percent); - m_value = static_cast<int>(value * percentScaleFactor) * 16 | (m_value & 0x8) | t; - } - - void setValue(double value) - { - ASSERT(type() == Percent); - m_value = static_cast<int>(value * percentScaleFactor) * 16 | (m_value & 0xF); - } - - // note: works only for certain types, returns undefinedLength otherwise - int calcValue(int maxValue, bool roundPercentages = false) const - { - switch (type()) { - case Fixed: - return value(); - case Percent: - if (roundPercentages) - return static_cast<int>(round(maxValue * percent() / 100.0)); - return maxValue * rawValue() / (100 * percentScaleFactor); - case Auto: - return maxValue; - default: - return undefinedLength; - } - } - - int calcMinValue(int maxValue, bool roundPercentages = false) const - { - switch (type()) { - case Fixed: - return value(); - case Percent: - if (roundPercentages) - return static_cast<int>(round(maxValue * percent() / 100.0)); - return maxValue * rawValue() / (100 * percentScaleFactor); - case Auto: - default: - return 0; - } - } - - float calcFloatValue(int maxValue) const - { - switch (type()) { - case Fixed: - return static_cast<float>(value()); - case Percent: - return static_cast<float>(maxValue * percent() / 100.0); - case Auto: - return static_cast<float>(maxValue); - default: - return static_cast<float>(undefinedLength); - } - } - - bool isUndefined() const { return rawValue() == undefinedLength; } - bool isZero() const { return !(m_value & ~0xF); } - bool isPositive() const { return rawValue() > 0; } - bool isNegative() const { return rawValue() < 0; } - - bool isAuto() const { return type() == Auto; } - bool isRelative() const { return type() == Relative; } - bool isPercent() const { return type() == Percent; } - bool isFixed() const { return type() == Fixed; } - bool isStatic() const { return type() == Static; } - bool isIntrinsicOrAuto() const { return type() == Auto || type() == MinIntrinsic || type() == Intrinsic; } - - Length blend(const Length& from, double progress) const - { - // Blend two lengths to produce a new length that is in between them. Used for animation. - if (!from.isZero() && !isZero() && from.type() != type()) - return *this; - - if (from.isZero() && isZero()) - return *this; - - LengthType resultType = type(); - if (isZero()) - resultType = from.type(); - - if (resultType == Percent) { - double fromPercent = from.isZero() ? 0. : from.percent(); - double toPercent = isZero() ? 0. : percent(); - return Length(fromPercent + (toPercent - fromPercent) * progress, Percent); - } - - int fromValue = from.isZero() ? 0 : from.value(); - int toValue = isZero() ? 0 : value(); - return Length(int(fromValue + (toValue - fromValue) * progress), resultType); - } - -private: - int m_value; -}; - -Length* newCoordsArray(const String&, int& len); -Length* newLengthArray(const String&, int& len); - -} // namespace WebCore - -#endif // Length_h |