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/*
* Copyright (c) 2018-2022, Andreas Kling <kling@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <LibWeb/HTML/BrowsingContext.h>
#include <LibWeb/Layout/ImageBox.h>
#include <LibWeb/Painting/ImagePaintable.h>
#include <LibWeb/Platform/FontPlugin.h>
namespace Web::Layout {
ImageBox::ImageBox(DOM::Document& document, DOM::Element& element, NonnullRefPtr<CSS::StyleProperties> style, ImageLoader const& image_loader)
: ReplacedBox(document, element, move(style))
, m_image_loader(image_loader)
{
}
ImageBox::~ImageBox() = default;
int ImageBox::preferred_width() const
{
return dom_node().attribute(HTML::AttributeNames::width).to_int().value_or(m_image_loader.width());
}
int ImageBox::preferred_height() const
{
return dom_node().attribute(HTML::AttributeNames::height).to_int().value_or(m_image_loader.height());
}
void ImageBox::prepare_for_replaced_layout()
{
if (!m_image_loader.has_loaded_or_failed()) {
set_intrinsic_width(0);
set_intrinsic_height(0);
} else {
if (m_image_loader.width()) {
set_intrinsic_width(m_image_loader.width());
}
if (m_image_loader.height()) {
set_intrinsic_height(m_image_loader.height());
}
if (m_image_loader.width() && m_image_loader.height()) {
set_intrinsic_aspect_ratio((float)m_image_loader.width() / (float)m_image_loader.height());
} else {
set_intrinsic_aspect_ratio({});
}
}
if (renders_as_alt_text()) {
auto& image_element = verify_cast<HTML::HTMLImageElement>(dom_node());
auto& font = Platform::FontPlugin::the().default_font();
auto alt = image_element.alt();
CSSPixels alt_text_width = 0;
if (!m_cached_alt_text_width.has_value())
m_cached_alt_text_width = font.width(alt);
alt_text_width = m_cached_alt_text_width.value();
set_intrinsic_width(alt_text_width + 16);
set_intrinsic_height(font.pixel_size() + 16);
}
if (!has_intrinsic_width() && !has_intrinsic_height()) {
// FIXME: Do something.
}
}
void ImageBox::dom_node_did_update_alt_text(Badge<HTML::HTMLImageElement>)
{
m_cached_alt_text_width = {};
}
bool ImageBox::renders_as_alt_text() const
{
if (is<HTML::HTMLImageElement>(dom_node()))
return !m_image_loader.has_image();
return false;
}
JS::GCPtr<Painting::Paintable> ImageBox::create_paintable() const
{
return Painting::ImagePaintable::create(*this);
}
}
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