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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 "third_party/blink/renderer/core/css/cssom/css_rotate.h"
#include "third_party/blink/renderer/core/css/css_function_value.h"
#include "third_party/blink/renderer/core/css/css_primitive_value.h"
#include "third_party/blink/renderer/core/css/cssom/css_unit_value.h"
#include "third_party/blink/renderer/core/geometry/dom_matrix.h"
#include "third_party/blink/renderer/platform/bindings/exception_state.h"
namespace blink {
namespace {
bool IsValidRotateCoord(const CSSNumericValue* value) {
return value && value->Type().MatchesNumber();
}
bool IsValidRotateAngle(const CSSNumericValue* value) {
return value &&
value->Type().MatchesBaseType(CSSNumericValueType::BaseType::kAngle);
}
CSSRotate* FromCSSRotate(const CSSFunctionValue& value) {
DCHECK_EQ(value.length(), 1UL);
CSSNumericValue* angle =
CSSNumericValue::FromCSSValue(ToCSSPrimitiveValue(value.Item(0)));
return CSSRotate::Create(angle);
}
CSSRotate* FromCSSRotate3d(const CSSFunctionValue& value) {
DCHECK_EQ(value.length(), 4UL);
CSSNumericValue* x =
CSSNumericValue::FromCSSValue(ToCSSPrimitiveValue(value.Item(0)));
CSSNumericValue* y =
CSSNumericValue::FromCSSValue(ToCSSPrimitiveValue(value.Item(1)));
CSSNumericValue* z =
CSSNumericValue::FromCSSValue(ToCSSPrimitiveValue(value.Item(2)));
CSSNumericValue* angle =
CSSNumericValue::FromCSSValue(ToCSSPrimitiveValue(value.Item(3)));
return CSSRotate::Create(x, y, z, angle);
}
CSSRotate* FromCSSRotateXYZ(const CSSFunctionValue& value) {
DCHECK_EQ(value.length(), 1UL);
CSSNumericValue* angle =
CSSNumericValue::FromCSSValue(ToCSSPrimitiveValue(value.Item(0)));
switch (value.FunctionType()) {
case CSSValueRotateX:
return CSSRotate::Create(CSSUnitValue::Create(1), CSSUnitValue::Create(0),
CSSUnitValue::Create(0), angle);
case CSSValueRotateY:
return CSSRotate::Create(CSSUnitValue::Create(0), CSSUnitValue::Create(1),
CSSUnitValue::Create(0), angle);
case CSSValueRotateZ:
return CSSRotate::Create(CSSUnitValue::Create(0), CSSUnitValue::Create(0),
CSSUnitValue::Create(1), angle);
default:
NOTREACHED();
return nullptr;
}
}
} // namespace
CSSRotate* CSSRotate::Create(CSSNumericValue* angle,
ExceptionState& exception_state) {
if (!IsValidRotateAngle(angle)) {
exception_state.ThrowTypeError("Must pass an angle to CSSRotate");
return nullptr;
}
return new CSSRotate(CSSUnitValue::Create(0), CSSUnitValue::Create(0),
CSSUnitValue::Create(1), angle, true /* is2D */);
}
CSSRotate* CSSRotate::Create(const CSSNumberish& x,
const CSSNumberish& y,
const CSSNumberish& z,
CSSNumericValue* angle,
ExceptionState& exception_state) {
CSSNumericValue* x_value = CSSNumericValue::FromNumberish(x);
CSSNumericValue* y_value = CSSNumericValue::FromNumberish(y);
CSSNumericValue* z_value = CSSNumericValue::FromNumberish(z);
if (!IsValidRotateCoord(x_value) || !IsValidRotateCoord(y_value) ||
!IsValidRotateCoord(z_value)) {
exception_state.ThrowTypeError("Must specify an number unit");
return nullptr;
}
if (!IsValidRotateAngle(angle)) {
exception_state.ThrowTypeError("Must pass an angle to CSSRotate");
return nullptr;
}
return new CSSRotate(x_value, y_value, z_value, angle, false /* is2D */);
}
CSSRotate* CSSRotate::Create(CSSNumericValue* angle) {
return new CSSRotate(CSSUnitValue::Create(0), CSSUnitValue::Create(0),
CSSUnitValue::Create(1), angle, true /* is2D */);
}
CSSRotate* CSSRotate::Create(CSSNumericValue* x,
CSSNumericValue* y,
CSSNumericValue* z,
CSSNumericValue* angle) {
return new CSSRotate(x, y, z, angle, false /* is2D */);
}
CSSRotate* CSSRotate::FromCSSValue(const CSSFunctionValue& value) {
switch (value.FunctionType()) {
case CSSValueRotate:
return FromCSSRotate(value);
case CSSValueRotate3d:
return FromCSSRotate3d(value);
case CSSValueRotateX:
case CSSValueRotateY:
case CSSValueRotateZ:
return FromCSSRotateXYZ(value);
default:
NOTREACHED();
return nullptr;
}
}
void CSSRotate::setAngle(CSSNumericValue* angle,
ExceptionState& exception_state) {
if (!IsValidRotateAngle(angle)) {
exception_state.ThrowTypeError("Must pass an angle to CSSRotate");
return;
}
angle_ = angle;
}
DOMMatrix* CSSRotate::toMatrix(ExceptionState& exception_state) const {
CSSUnitValue* x = x_->to(CSSPrimitiveValue::UnitType::kNumber);
CSSUnitValue* y = y_->to(CSSPrimitiveValue::UnitType::kNumber);
CSSUnitValue* z = z_->to(CSSPrimitiveValue::UnitType::kNumber);
if (!x || !y || !z) {
exception_state.ThrowTypeError(
"Cannot create matrix if units cannot be converted to CSSUnitValue");
return nullptr;
}
DOMMatrix* matrix = DOMMatrix::Create();
CSSUnitValue* angle = angle_->to(CSSPrimitiveValue::UnitType::kDegrees);
if (is2D()) {
matrix->rotateAxisAngleSelf(0, 0, 1, angle->value());
} else {
matrix->rotateAxisAngleSelf(x->value(), y->value(), z->value(),
angle->value());
}
return matrix;
}
const CSSFunctionValue* CSSRotate::ToCSSValue() const {
DCHECK(x_->to(CSSPrimitiveValue::UnitType::kNumber));
DCHECK(y_->to(CSSPrimitiveValue::UnitType::kNumber));
DCHECK(z_->to(CSSPrimitiveValue::UnitType::kNumber));
DCHECK(angle_->to(CSSPrimitiveValue::UnitType::kRadians));
CSSFunctionValue* result =
CSSFunctionValue::Create(is2D() ? CSSValueRotate : CSSValueRotate3d);
if (!is2D()) {
const CSSValue* x = x_->ToCSSValue();
const CSSValue* y = y_->ToCSSValue();
const CSSValue* z = z_->ToCSSValue();
if (!x || !y || !z)
return nullptr;
result->Append(*x);
result->Append(*y);
result->Append(*z);
}
const CSSValue* angle = angle_->ToCSSValue();
if (!angle)
return nullptr;
result->Append(*angle);
return result;
}
void CSSRotate::setX(const CSSNumberish& x, ExceptionState& exception_state) {
CSSNumericValue* value = CSSNumericValue::FromNumberish(x);
if (!IsValidRotateCoord(value)) {
exception_state.ThrowTypeError("Must specify a number unit");
return;
}
x_ = value;
}
void CSSRotate::setY(const CSSNumberish& y, ExceptionState& exception_state) {
CSSNumericValue* value = CSSNumericValue::FromNumberish(y);
if (!IsValidRotateCoord(value)) {
exception_state.ThrowTypeError("Must specify a number unit");
return;
}
y_ = value;
}
void CSSRotate::setZ(const CSSNumberish& z, ExceptionState& exception_state) {
CSSNumericValue* value = CSSNumericValue::FromNumberish(z);
if (!IsValidRotateCoord(value)) {
exception_state.ThrowTypeError("Must specify a number unit");
return;
}
z_ = value;
}
CSSRotate::CSSRotate(CSSNumericValue* x,
CSSNumericValue* y,
CSSNumericValue* z,
CSSNumericValue* angle,
bool is2D)
: CSSTransformComponent(is2D), angle_(angle), x_(x), y_(y), z_(z) {
DCHECK(IsValidRotateCoord(x));
DCHECK(IsValidRotateCoord(y));
DCHECK(IsValidRotateCoord(z));
DCHECK(IsValidRotateAngle(angle));
}
} // namespace blink
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