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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 <LibCore/Timer.h>
#include <LibGfx/Bitmap.h>
#include <LibGfx/ImageDecoder.h>
#include <LibWeb/Loader/ImageLoader.h>
#include <LibWeb/Loader/ResourceLoader.h>
namespace Web {
ImageLoader::ImageLoader()
: m_timer(Core::Timer::construct())
{
}
void ImageLoader::load(const URL& url)
{
LoadRequest request;
request.set_url(url);
set_resource(ResourceLoader::the().load_resource(Resource::Type::Image, request));
}
void ImageLoader::set_visible_in_viewport(bool visible_in_viewport) const
{
if (m_visible_in_viewport == visible_in_viewport)
return;
m_visible_in_viewport = visible_in_viewport;
// FIXME: Don't update volatility every time. If we're here, we're probably scanning through
// the whole document, updating "is visible in viewport" flags, and this could lead
// to the same bitmap being marked volatile back and forth unnecessarily.
if (resource())
const_cast<ImageResource*>(resource())->update_volatility();
}
void ImageLoader::resource_did_load()
{
ASSERT(resource());
if (!resource()->mime_type().starts_with("image/")) {
if (on_fail)
on_fail();
return;
}
#ifdef IMAGE_LOADER_DEBUG
if (!resource()->has_encoded_data()) {
dbg() << "ImageLoader: Resource did load, no encoded data. URL: " << resource()->url();
} else {
dbg() << "ImageLoader: Resource did load, has encoded data. URL: " << resource()->url();
}
#endif
if (resource()->should_decode_in_process()) {
auto& decoder = resource()->ensure_decoder();
if (decoder.is_animated() && decoder.frame_count() > 1) {
const auto& first_frame = decoder.frame(0);
m_timer->set_interval(first_frame.duration);
m_timer->on_timeout = [this] { animate(); };
m_timer->start();
}
}
if (on_load)
on_load();
}
void ImageLoader::animate()
{
if (!m_visible_in_viewport)
return;
auto& decoder = resource()->ensure_decoder();
m_current_frame_index = (m_current_frame_index + 1) % decoder.frame_count();
const auto& current_frame = decoder.frame(m_current_frame_index);
if (current_frame.duration != m_timer->interval()) {
m_timer->restart(current_frame.duration);
}
if (m_current_frame_index == decoder.frame_count() - 1) {
++m_loops_completed;
if (m_loops_completed > 0 && m_loops_completed == decoder.loop_count()) {
m_timer->stop();
}
}
if (on_animate)
on_animate();
}
void ImageLoader::resource_did_fail()
{
dbg() << "ImageLoader: Resource did fail. URL: " << resource()->url();
if (on_fail)
on_fail();
}
bool ImageLoader::has_image() const
{
if (!resource())
return false;
if (resource()->should_decode_in_process())
return const_cast<ImageResource*>(resource())->ensure_decoder().bitmap();
return true;
}
unsigned ImageLoader::width() const
{
if (!resource())
return 0;
if (resource()->should_decode_in_process())
return const_cast<ImageResource*>(resource())->ensure_decoder().width();
return bitmap() ? bitmap()->width() : 0;
}
unsigned ImageLoader::height() const
{
if (!resource())
return 0;
if (resource()->should_decode_in_process())
return const_cast<ImageResource*>(resource())->ensure_decoder().height();
return bitmap() ? bitmap()->height() : 0;
}
const Gfx::Bitmap* ImageLoader::bitmap() const
{
if (!resource())
return nullptr;
return resource()->bitmap(m_current_frame_index);
}
}
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