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/*
* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
* 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 THE COPYRIGHT HOLDERS AND 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 THE COPYRIGHT HOLDER 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 <LibGfx/Bitmap.h>
#include <LibGfx/ImageDecoder.h>
#include <LibHTML/CSS/StyleResolver.h>
#include <LibHTML/DOM/Document.h>
#include <LibHTML/DOM/HTMLImageElement.h>
#include <LibHTML/Layout/LayoutImage.h>
#include <LibHTML/ResourceLoader.h>
namespace Web {
HTMLImageElement::HTMLImageElement(Document& document, const String& tag_name)
: HTMLElement(document, tag_name)
{
}
HTMLImageElement::~HTMLImageElement()
{
}
void HTMLImageElement::parse_attribute(const String& name, const String& value)
{
if (name.equals_ignoring_case("src"))
load_image(value);
}
void HTMLImageElement::load_image(const String& src)
{
URL src_url = document().complete_url(src);
ResourceLoader::the().load(src_url, [this, weak_element = make_weak_ptr()](auto data) {
if (!weak_element) {
dbg() << "HTMLImageElement: Load completed after element destroyed.";
return;
}
if (data.is_null()) {
dbg() << "HTMLImageElement: Failed to load " << this->src();
return;
}
m_encoded_data = data;
m_image_decoder = Gfx::ImageDecoder::create(m_encoded_data.data(), m_encoded_data.size());
document().update_layout();
});
}
int HTMLImageElement::preferred_width() const
{
bool ok = false;
int width = attribute("width").to_int(ok);
if (ok)
return width;
if (m_image_decoder)
return m_image_decoder->width();
return 0;
}
int HTMLImageElement::preferred_height() const
{
bool ok = false;
int height = attribute("height").to_int(ok);
if (ok)
return height;
if (m_image_decoder)
return m_image_decoder->height();
return 0;
}
RefPtr<LayoutNode> HTMLImageElement::create_layout_node(const StyleProperties* parent_style) const
{
auto style = document().style_resolver().resolve_style(*this, parent_style);
auto display = style->string_or_fallback(CSS::PropertyID::Display, "inline");
if (display == "none")
return nullptr;
return adopt(*new LayoutImage(*this, move(style)));
}
const Gfx::Bitmap* HTMLImageElement::bitmap() const
{
if (!m_image_decoder)
return nullptr;
return m_image_decoder->bitmap();
}
void HTMLImageElement::set_volatile(Badge<LayoutDocument>, bool v)
{
if (!m_image_decoder)
return;
if (v) {
m_image_decoder->set_volatile();
return;
}
bool has_image = m_image_decoder->set_nonvolatile();
if (has_image)
return;
m_image_decoder = Gfx::ImageDecoder::create(m_encoded_data.data(), m_encoded_data.size());
}
}
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