Source/WebCore/rendering/RenderAttachment.cpp

/*
 * Copyright (C) 2015 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. AND ITS CONTRIBUTORS ``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 ITS 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"
#include "RenderAttachment.h"

#if ENABLE(ATTACHMENT_ELEMENT)

#include "FloatRect.h"
#include "FloatRoundedRect.h"
#include "FrameSelection.h"
#include "HTMLAttachmentElement.h"
#include "RenderChildIterator.h"
#include "RenderTheme.h"
#include <wtf/IsoMallocInlines.h>
#include <wtf/URL.h>

namespace WebCore {

using namespace HTMLNames;

WTF_MAKE_ISO_ALLOCATED_IMPL(RenderAttachment);

RenderAttachment::RenderAttachment(HTMLAttachmentElement& element, RenderStyle&& style)
    : RenderReplaced(element, WTFMove(style), LayoutSize())
{
#if ENABLE(SERVICE_CONTROLS)
    m_hasShadowControls = element.isImageMenuEnabled();
#endif
}

HTMLAttachmentElement& RenderAttachment::attachmentElement() const
{
    return downcast<HTMLAttachmentElement>(nodeForNonAnonymous());
}

void RenderAttachment::layout()
{
    LayoutSize newIntrinsicSize = theme().attachmentIntrinsicSize(*this);

    if (!theme().attachmentShouldAllowWidthToShrink(*this)) {
        m_minimumIntrinsicWidth = std::max(m_minimumIntrinsicWidth, newIntrinsicSize.width());
        newIntrinsicSize.setWidth(m_minimumIntrinsicWidth);
    }

    setIntrinsicSize(newIntrinsicSize);

    RenderReplaced::layout();
    
    if (hasShadowContent())
        layoutShadowContent(newIntrinsicSize);
}

void RenderAttachment::invalidate()
{
    setNeedsLayout();
    repaint();
}

LayoutUnit RenderAttachment::baselinePosition(FontBaseline, bool, LineDirectionMode, LinePositionMode) const
{
    return theme().attachmentBaseline(*this);
}

bool RenderAttachment::shouldDrawBorder() const
{
    if (style().effectiveAppearance() == BorderlessAttachmentPart)
        return false;
    return m_shouldDrawBorder;
}

void RenderAttachment::paintReplaced(PaintInfo& paintInfo, const LayoutPoint& offset)
{
    if (paintInfo.phase != PaintPhase::Selection || !hasVisibleBoxDecorations() || !style().hasEffectiveAppearance())
        return;

    auto paintRect = borderBoxRect();
    paintRect.moveBy(offset);

    ControlStates controlStates;
    theme().paint(*this, controlStates, paintInfo, paintRect);
}

void RenderAttachment::layoutShadowContent(const LayoutSize& size)
{
    for (auto& renderBox : childrenOfType<RenderBox>(*this)) {
        renderBox.mutableStyle().setHeight(Length(size.height(), LengthType::Fixed));
        renderBox.mutableStyle().setWidth(Length(size.width(), LengthType::Fixed));
        renderBox.setNeedsLayout(MarkOnlyThis);
        renderBox.layout();
    }
}

} // namespace WebCore

#endif