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// Copyright 2016 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "core/css/cssom/CSSScale.h"
#include "core/css/CSSPrimitiveValue.h"
namespace blink {
namespace {
CSSScale* fromScale(const CSSFunctionValue& value) {
DCHECK(value.length() == 1U || value.length() == 2U);
double x = toCSSPrimitiveValue(value.item(0)).getDoubleValue();
if (value.length() == 1U)
return CSSScale::create(x, 1);
double y = toCSSPrimitiveValue(value.item(1)).getDoubleValue();
return CSSScale::create(x, y);
}
CSSScale* fromScaleXYZ(const CSSFunctionValue& value) {
DCHECK_EQ(value.length(), 1U);
double doubleValue = toCSSPrimitiveValue(value.item(0)).getDoubleValue();
switch (value.functionType()) {
case CSSValueScaleX:
return CSSScale::create(doubleValue, 1);
case CSSValueScaleY:
return CSSScale::create(1, doubleValue);
case CSSValueScaleZ:
return CSSScale::create(1, 1, doubleValue);
default:
NOTREACHED();
return nullptr;
}
}
CSSScale* fromScale3d(const CSSFunctionValue& value) {
DCHECK_EQ(value.length(), 3U);
double x = toCSSPrimitiveValue(value.item(0)).getDoubleValue();
double y = toCSSPrimitiveValue(value.item(1)).getDoubleValue();
double z = toCSSPrimitiveValue(value.item(2)).getDoubleValue();
return CSSScale::create(x, y, z);
}
} // namespace
CSSScale* CSSScale::fromCSSValue(const CSSFunctionValue& value) {
switch (value.functionType()) {
case CSSValueScale:
return fromScale(value);
case CSSValueScaleX:
case CSSValueScaleY:
case CSSValueScaleZ:
return fromScaleXYZ(value);
case CSSValueScale3d:
return fromScale3d(value);
default:
NOTREACHED();
return nullptr;
}
}
CSSFunctionValue* CSSScale::toCSSValue() const {
CSSFunctionValue* result =
CSSFunctionValue::create(m_is2D ? CSSValueScale : CSSValueScale3d);
result->append(
*CSSPrimitiveValue::create(m_x, CSSPrimitiveValue::UnitType::Number));
result->append(
*CSSPrimitiveValue::create(m_y, CSSPrimitiveValue::UnitType::Number));
if (!m_is2D)
result->append(
*CSSPrimitiveValue::create(m_z, CSSPrimitiveValue::UnitType::Number));
return result;
}
} // namespace blink
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