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/*
* Copyright (C) 2013-2024 Apple Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "config.h"
#if ENABLE(VIDEO)
#include "TextTrackCueGeneric.h"
#include "CSSPropertyNames.h"
#include "CSSStyleDeclaration.h"
#include "CSSValueKeywords.h"
#include "ColorSerialization.h"
#include "HTMLSpanElement.h"
#include "InbandTextTrackPrivateClient.h"
#include "Logging.h"
#include "RenderObject.h"
#include "ScriptExecutionContext.h"
#include "StyleProperties.h"
#include <wtf/MathExtras.h>
#include <wtf/TZoneMallocInlines.h>
namespace WebCore {
WTF_MAKE_TZONE_OR_ISO_ALLOCATED_IMPL(TextTrackCueGeneric);
class TextTrackCueGenericBoxElement final : public VTTCueBox {
WTF_MAKE_TZONE_OR_ISO_ALLOCATED(TextTrackCueGenericBoxElement);
WTF_OVERRIDE_DELETE_FOR_CHECKED_PTR(TextTrackCueGenericBoxElement);
public:
static Ref<TextTrackCueGenericBoxElement> create(Document&, TextTrackCueGeneric&);
void applyCSSProperties() override;
private:
TextTrackCueGenericBoxElement(Document&, VTTCue&);
};
WTF_MAKE_TZONE_OR_ISO_ALLOCATED_IMPL(TextTrackCueGenericBoxElement);
Ref<TextTrackCueGenericBoxElement> TextTrackCueGenericBoxElement::create(Document& document, TextTrackCueGeneric& cue)
{
auto box = adoptRef(*new TextTrackCueGenericBoxElement(document, cue));
box->initialize();
return box;
}
TextTrackCueGenericBoxElement::TextTrackCueGenericBoxElement(Document& document, VTTCue& cue)
: VTTCueBox(document, cue)
{
}
void TextTrackCueGenericBoxElement::applyCSSProperties()
{
VTTCueBox::applyCSSProperties();
RefPtr<TextTrackCueGeneric> cue = static_cast<TextTrackCueGeneric*>(getCue());
if (!cue)
return;
Ref<HTMLSpanElement> cueElement = cue->element();
if (cue->foregroundColor().isValid())
cueElement->setInlineStyleProperty(CSSPropertyColor, serializationForHTML(cue->foregroundColor()));
if (cue->highlightColor().isValid())
cueElement->setInlineStyleProperty(CSSPropertyBackgroundColor, serializationForHTML(cue->highlightColor()));
if (cue->backgroundColor().isValid())
setInlineStyleProperty(CSSPropertyBackgroundColor, serializationForHTML(cue->backgroundColor()));
}
Ref<TextTrackCueGeneric> TextTrackCueGeneric::create(ScriptExecutionContext& context, const MediaTime& start, const MediaTime& end, const String& content)
{
auto cue = adoptRef(*new TextTrackCueGeneric(downcast<Document>(context), start, end, content));
cue->suspendIfNeeded();
return cue;
}
TextTrackCueGeneric::TextTrackCueGeneric(Document& document, const MediaTime& start, const MediaTime& end, const String& content)
: VTTCue(document, start, end, String { content })
{
}
RefPtr<VTTCueBox> TextTrackCueGeneric::createDisplayTree()
{
if (auto* document = this->document())
return TextTrackCueGenericBoxElement::create(*document, *this);
return nullptr;
}
ExceptionOr<void> TextTrackCueGeneric::setPosition(const LineAndPositionSetting& position)
{
auto result = VTTCue::setPosition(position);
if (!result.hasException())
m_useDefaultPosition = false;
return result;
}
void TextTrackCueGeneric::setBaseFontSizeRelativeToVideoHeight(double baseFontSize)
{
if (m_baseFontSizeRelativeToVideoHeight == baseFontSize)
return;
m_baseFontSizeRelativeToVideoHeight = baseFontSize;
setFontSize(m_baseFontSizeRelativeToVideoHeight * m_fontSizeMultiplier, fontSizeIsImportant());
}
void TextTrackCueGeneric::setFontSizeMultiplier(double multiplier)
{
if (m_fontSizeMultiplier == multiplier)
return;
m_fontSizeMultiplier = multiplier;
setFontSize(m_baseFontSizeRelativeToVideoHeight * m_fontSizeMultiplier, fontSizeIsImportant());
}
bool TextTrackCueGeneric::cueContentsMatch(const TextTrackCue& otherTextTrackCue) const
{
auto& other = downcast<TextTrackCueGeneric>(otherTextTrackCue);
return VTTCue::cueContentsMatch(other)
&& m_baseFontSizeRelativeToVideoHeight == other.m_baseFontSizeRelativeToVideoHeight
&& m_fontSizeMultiplier == other.m_fontSizeMultiplier
&& m_fontName == other.m_fontName
&& m_foregroundColor == other.m_foregroundColor
&& m_backgroundColor == other.m_backgroundColor;
}
bool TextTrackCueGeneric::isOrderedBefore(const TextTrackCue* that) const
{
if (VTTCue::isOrderedBefore(that))
return true;
if (auto* thatCue = dynamicDowncast<TextTrackCueGeneric>(*that); thatCue && startTime() == that->startTime() && endTime() == that->endTime()) {
// Further order generic cues by their calculated line value.
auto thisPosition = getPositionCoordinates();
auto thatPosition = thatCue->getPositionCoordinates();
return thisPosition.second > thatPosition.second || (thisPosition.second == thatPosition.second && thisPosition.first < thatPosition.first);
}
return false;
}
bool TextTrackCueGeneric::isPositionedAbove(const TextTrackCue* that) const
{
if (auto* thatCue = dynamicDowncast<TextTrackCueGeneric>(*that)) {
if (startTime() == thatCue->startTime() && endTime() == thatCue->endTime()) {
// Further order generic cues by their calculated line value.
auto thisPosition = getPositionCoordinates();
auto thatPosition = thatCue->getPositionCoordinates();
return thisPosition.second > thatPosition.second || (thisPosition.second == thatPosition.second && thisPosition.first < thatPosition.first);
}
return startTime() > thatCue->startTime();
}
return VTTCue::isOrderedBefore(that);
}
void TextTrackCueGeneric::toJSON(JSON::Object& object) const
{
VTTCue::toJSON(object);
if (m_foregroundColor.isValid())
object.setString("foregroundColor"_s, serializationForHTML(m_foregroundColor));
if (m_backgroundColor.isValid())
object.setString("backgroundColor"_s, serializationForHTML(m_backgroundColor));
if (m_highlightColor.isValid())
object.setString("highlightColor"_s, serializationForHTML(m_highlightColor));
if (m_baseFontSizeRelativeToVideoHeight)
object.setDouble("relativeFontSize"_s, m_baseFontSizeRelativeToVideoHeight);
if (m_fontSizeMultiplier)
object.setDouble("fontSizeMultiplier"_s, m_fontSizeMultiplier);
if (!m_fontName.isEmpty())
object.setString("font"_s, m_fontName);
}
} // namespace WebCore
#endif
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