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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_url_image_value.h"
#include "third_party/blink/renderer/core/css/css_image_value.h"
#include "third_party/blink/renderer/core/execution_context/execution_context.h"
#include "third_party/blink/renderer/core/loader/resource/image_resource_content.h"
#include "third_party/blink/renderer/core/style/style_image.h"
#include "third_party/blink/renderer/platform/bindings/exception_state.h"
#include "third_party/blink/renderer/platform/bindings/script_state.h"
namespace blink {
CSSURLImageValue* CSSURLImageValue::Create(ScriptState* script_state,
const AtomicString& url,
ExceptionState& exception_state) {
const auto* execution_context = ExecutionContext::From(script_state);
DCHECK(execution_context);
KURL parsed_url = execution_context->CompleteURL(url);
if (!parsed_url.IsValid()) {
exception_state.ThrowTypeError("Failed to parse URL from " + url);
return nullptr;
}
// Use absolute URL for CSSImageValue but keep relative URL for
// getter and serialization.
return MakeGarbageCollected<CSSURLImageValue>(
*CSSImageValue::Create(url, parsed_url, Referrer()));
}
CSSURLImageValue* CSSURLImageValue::FromCSSValue(const CSSImageValue& value) {
return MakeGarbageCollected<CSSURLImageValue>(value);
}
const String& CSSURLImageValue::url() const {
return value_->RelativeUrl();
}
base::Optional<IntSize> CSSURLImageValue::IntrinsicSize() const {
if (Status() != ResourceStatus::kCached)
return base::nullopt;
DCHECK(!value_->IsCachePending());
ImageResourceContent* resource_content = value_->CachedImage()->CachedImage();
return resource_content
? resource_content->IntrinsicSize(kDoNotRespectImageOrientation)
: IntSize(0, 0);
}
ResourceStatus CSSURLImageValue::Status() const {
if (value_->IsCachePending())
return ResourceStatus::kNotStarted;
return value_->CachedImage()->CachedImage()->GetContentStatus();
}
scoped_refptr<Image> CSSURLImageValue::GetSourceImageForCanvas(
SourceImageStatus*,
AccelerationHint,
const FloatSize&) {
return GetImage();
}
scoped_refptr<Image> CSSURLImageValue::GetImage() const {
if (value_->IsCachePending())
return nullptr;
// cachedImage can be null if image is StyleInvalidImage
ImageResourceContent* cached_image = value_->CachedImage()->CachedImage();
if (cached_image) {
// getImage() returns the nullImage() if the image is not available yet
return cached_image->GetImage()->ImageForDefaultFrame();
}
return nullptr;
}
bool CSSURLImageValue::IsAccelerated() const {
return GetImage() && GetImage()->IsTextureBacked();
}
const CSSValue* CSSURLImageValue::ToCSSValue() const {
return value_;
}
void CSSURLImageValue::Trace(blink::Visitor* visitor) {
visitor->Trace(value_);
CSSStyleImageValue::Trace(visitor);
}
} // namespace blink
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