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/*
* Copyright (c) 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 <AK/Function.h>
#include <LibGfx/Bitmap.h>
#include <LibGfx/ImageDecoder.h>
#include <LibImageDecoderClient/Client.h>
#include <LibWeb/Loader/ImageResource.h>
namespace Web {
ImageResource::ImageResource(const LoadRequest& request)
: Resource(Type::Image, request)
{
}
ImageResource::~ImageResource()
{
}
bool ImageResource::should_decode_in_process() const
{
return mime_type() == "image/gif";
}
Gfx::ImageDecoder& ImageResource::ensure_decoder()
{
if (!m_decoder)
m_decoder = Gfx::ImageDecoder::create(encoded_data());
return *m_decoder;
}
const Gfx::Bitmap* ImageResource::bitmap(size_t frame_index) const
{
if (!has_encoded_data())
return nullptr;
if (should_decode_in_process()) {
if (!m_decoder)
return nullptr;
if (m_decoder->is_animated())
return m_decoder->frame(frame_index).image;
return m_decoder->bitmap();
}
if (!m_decoded_image && !m_has_attempted_decode) {
auto image_decoder_client = ImageDecoderClient::Client::construct();
m_decoded_image = image_decoder_client->decode_image(encoded_data());
m_has_attempted_decode = true;
}
return m_decoded_image;
}
void ImageResource::update_volatility()
{
if (!m_decoder)
return;
bool visible_in_viewport = false;
for_each_client([&](auto& client) {
if (static_cast<const ImageResourceClient&>(client).is_visible_in_viewport())
visible_in_viewport = true;
});
if (!visible_in_viewport) {
m_decoder->set_volatile();
return;
}
bool still_has_decoded_image = m_decoder->set_nonvolatile();
if (still_has_decoded_image)
return;
m_decoder = nullptr;
}
ImageResourceClient::~ImageResourceClient()
{
}
}
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