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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_translate.h"
#include "third_party/blink/renderer/core/css/css_primitive_value.h"
#include "third_party/blink/renderer/core/css/cssom/css_numeric_value.h"
#include "third_party/blink/renderer/core/css/cssom/css_style_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 IsValidTranslateXY(const CSSNumericValue* value) {
return value && value->Type().MatchesBaseTypePercentage(
CSSNumericValueType::BaseType::kLength);
}
bool IsValidTranslateZ(const CSSNumericValue* value) {
return value &&
value->Type().MatchesBaseType(CSSNumericValueType::BaseType::kLength);
}
CSSTranslate* FromCSSTranslate(const CSSFunctionValue& value) {
DCHECK_GT(value.length(), 0UL);
CSSNumericValue* x =
CSSNumericValue::FromCSSValue(ToCSSPrimitiveValue(value.Item(0)));
if (value.length() == 1) {
return CSSTranslate::Create(
x, CSSUnitValue::Create(0, CSSPrimitiveValue::UnitType::kPixels));
}
DCHECK_EQ(value.length(), 2UL);
CSSNumericValue* y =
CSSNumericValue::FromCSSValue(ToCSSPrimitiveValue(value.Item(1)));
return CSSTranslate::Create(x, y);
}
CSSTranslate* FromCSSTranslateXYZ(const CSSFunctionValue& value) {
DCHECK_EQ(value.length(), 1UL);
CSSNumericValue* length =
CSSNumericValue::FromCSSValue(ToCSSPrimitiveValue(value.Item(0)));
switch (value.FunctionType()) {
case CSSValueTranslateX:
return CSSTranslate::Create(
length,
CSSUnitValue::Create(0, CSSPrimitiveValue::UnitType::kPixels));
case CSSValueTranslateY:
return CSSTranslate::Create(
CSSUnitValue::Create(0, CSSPrimitiveValue::UnitType::kPixels),
length);
case CSSValueTranslateZ:
return CSSTranslate::Create(
CSSUnitValue::Create(0, CSSPrimitiveValue::UnitType::kPixels),
CSSUnitValue::Create(0, CSSPrimitiveValue::UnitType::kPixels),
length);
default:
NOTREACHED();
return nullptr;
}
}
CSSTranslate* FromCSSTranslate3D(const CSSFunctionValue& value) {
DCHECK_EQ(value.length(), 3UL);
CSSNumericValue* x =
CSSNumericValue::FromCSSValue(ToCSSPrimitiveValue(value.Item(0)));
CSSNumericValue* y =
CSSNumericValue::FromCSSValue(ToCSSPrimitiveValue(value.Item(1)));
CSSNumericValue* z =
CSSNumericValue::FromCSSValue(ToCSSPrimitiveValue(value.Item(2)));
return CSSTranslate::Create(x, y, z);
}
} // namespace
CSSTranslate* CSSTranslate::Create(CSSNumericValue* x,
CSSNumericValue* y,
ExceptionState& exception_state) {
if (!IsValidTranslateXY(x) || !IsValidTranslateXY(y)) {
exception_state.ThrowTypeError(
"Must pass length or percentage to X and Y of CSSTranslate");
return nullptr;
}
return MakeGarbageCollected<CSSTranslate>(
x, y, CSSUnitValue::Create(0, CSSPrimitiveValue::UnitType::kPixels),
true /* is2D */);
}
CSSTranslate* CSSTranslate::Create(CSSNumericValue* x,
CSSNumericValue* y,
CSSNumericValue* z,
ExceptionState& exception_state) {
if (!IsValidTranslateXY(x) || !IsValidTranslateXY(y) ||
!IsValidTranslateZ(z)) {
exception_state.ThrowTypeError(
"Must pass length or percentage to X, Y and Z of CSSTranslate");
return nullptr;
}
return MakeGarbageCollected<CSSTranslate>(x, y, z, false /* is2D */);
}
CSSTranslate* CSSTranslate::Create(CSSNumericValue* x, CSSNumericValue* y) {
return MakeGarbageCollected<CSSTranslate>(
x, y, CSSUnitValue::Create(0, CSSPrimitiveValue::UnitType::kPixels),
true /* is2D */);
}
CSSTranslate* CSSTranslate::Create(CSSNumericValue* x,
CSSNumericValue* y,
CSSNumericValue* z) {
return MakeGarbageCollected<CSSTranslate>(x, y, z, false /* is2D */);
}
CSSTranslate* CSSTranslate::FromCSSValue(const CSSFunctionValue& value) {
switch (value.FunctionType()) {
case CSSValueTranslateX:
case CSSValueTranslateY:
case CSSValueTranslateZ:
return FromCSSTranslateXYZ(value);
case CSSValueTranslate:
return FromCSSTranslate(value);
case CSSValueTranslate3d:
return FromCSSTranslate3D(value);
default:
NOTREACHED();
return nullptr;
}
}
void CSSTranslate::setX(CSSNumericValue* x, ExceptionState& exception_state) {
if (!IsValidTranslateXY(x)) {
exception_state.ThrowTypeError(
"Must pass length or percentage to X of CSSTranslate");
return;
}
x_ = x;
}
void CSSTranslate::setY(CSSNumericValue* y, ExceptionState& exception_state) {
if (!IsValidTranslateXY(y)) {
exception_state.ThrowTypeError(
"Must pass length or percent to Y of CSSTranslate");
return;
}
y_ = y;
}
void CSSTranslate::setZ(CSSNumericValue* z, ExceptionState& exception_state) {
if (!IsValidTranslateZ(z)) {
exception_state.ThrowTypeError("Must pass length to Z of CSSTranslate");
return;
}
z_ = z;
}
DOMMatrix* CSSTranslate::toMatrix(ExceptionState& exception_state) const {
CSSUnitValue* x = x_->to(CSSPrimitiveValue::UnitType::kPixels);
CSSUnitValue* y = y_->to(CSSPrimitiveValue::UnitType::kPixels);
CSSUnitValue* z = z_->to(CSSPrimitiveValue::UnitType::kPixels);
if (!x || !y || !z) {
exception_state.ThrowTypeError(
"Cannot create matrix if units are not compatible with px");
return nullptr;
}
DOMMatrix* matrix = DOMMatrix::Create();
if (is2D())
matrix->translateSelf(x->value(), y->value());
else
matrix->translateSelf(x->value(), y->value(), z->value());
return matrix;
}
const CSSFunctionValue* CSSTranslate::ToCSSValue() const {
const CSSValue* x = x_->ToCSSValue();
const CSSValue* y = y_->ToCSSValue();
CSSFunctionValue* result = CSSFunctionValue::Create(
is2D() ? CSSValueTranslate : CSSValueTranslate3d);
result->Append(*x);
result->Append(*y);
if (!is2D()) {
const CSSValue* z = z_->ToCSSValue();
result->Append(*z);
}
return result;
}
CSSTranslate::CSSTranslate(CSSNumericValue* x,
CSSNumericValue* y,
CSSNumericValue* z,
bool is2D)
: CSSTransformComponent(is2D), x_(x), y_(y), z_(z) {
DCHECK(IsValidTranslateXY(x));
DCHECK(IsValidTranslateXY(y));
DCHECK(IsValidTranslateZ(z));
}
} // namespace blink
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