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/*
* Copyright (c) 2023, Andreas Kling <kling@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <LibGfx/Bitmap.h>
#include <LibWeb/Fetch/Infrastructure/FetchController.h>
#include <LibWeb/HTML/DecodedImageData.h>
#include <LibWeb/HTML/ImageRequest.h>
namespace Web::HTML {
ErrorOr<NonnullRefPtr<ImageRequest>> ImageRequest::create()
{
return adopt_nonnull_ref_or_enomem(new (nothrow) ImageRequest);
}
ImageRequest::ImageRequest() = default;
ImageRequest::~ImageRequest() = default;
// https://html.spec.whatwg.org/multipage/images.html#img-available
bool ImageRequest::is_available() const
{
// When an image request's state is either partially available or completely available, the image request is said to be available.
return m_state == State::PartiallyAvailable || m_state == State::CompletelyAvailable;
}
ImageRequest::State ImageRequest::state() const
{
return m_state;
}
void ImageRequest::set_state(State state)
{
m_state = state;
}
AK::URL const& ImageRequest::current_url() const
{
return m_current_url;
}
void ImageRequest::set_current_url(AK::URL url)
{
m_current_url = move(url);
}
// https://html.spec.whatwg.org/multipage/images.html#abort-the-image-request
void ImageRequest::abort(JS::Realm& realm)
{
// 1. Forget image request's image data, if any.
m_image_data = nullptr;
// 2. Abort any instance of the fetching algorithm for image request,
// discarding any pending tasks generated by that algorithm.
if (m_fetch_controller)
m_fetch_controller->abort(realm, {});
m_fetch_controller = nullptr;
}
RefPtr<DecodedImageData const> ImageRequest::image_data() const
{
return m_image_data;
}
void ImageRequest::set_image_data(RefPtr<DecodedImageData const> data)
{
m_image_data = move(data);
}
// https://html.spec.whatwg.org/multipage/images.html#prepare-an-image-for-presentation
void ImageRequest::prepare_for_presentation(HTMLImageElement&)
{
// FIXME: 1. Let exifTagMap be the EXIF tags obtained from req's image data, as defined by the relevant codec. [EXIF]
// FIXME: 2. Let physicalWidth and physicalHeight be the width and height obtained from req's image data, as defined by the relevant codec.
// FIXME: 3. Let dimX be the value of exifTagMap's tag 0xA002 (PixelXDimension).
// FIXME: 4. Let dimY be the value of exifTagMap's tag 0xA003 (PixelYDimension).
// FIXME: 5. Let resX be the value of exifTagMap's tag 0x011A (XResolution).
// FIXME: 6. Let resY be the value of exifTagMap's tag 0x011B (YResolution).
// FIXME: 7. Let resUnit be the value of exifTagMap's tag 0x0128 (ResolutionUnit).
// FIXME: 8. If either dimX or dimY is not a positive integer, then return.
// FIXME: 9. If either resX or resY is not a positive floating-point number, then return.
// FIXME: 10. If resUnit is not equal to 2 (Inch), then return.
// FIXME: 11. Let widthFromDensity be the value of physicalWidth, multiplied by 72 and divided by resX.
// FIXME: 12. Let heightFromDensity be the value of physicalHeight, multiplied by 72 and divided by resY.
// FIXME: 13. If widthFromDensity is not equal to dimX or heightFromDensity is not equal to dimY, then return.
// FIXME: 14. If req's image data is CORS-cross-origin, then set img's intrinsic dimensions to dimX and dimY, scale img's pixel data accordingly, and return.
// FIXME: 15. Set req's preferred density-corrected dimensions to a struct with its width set to dimX and its height set to dimY.
// FIXME: 16. Update req's img element's presentation appropriately.
}
void ImageRequest::set_fetch_controller(JS::GCPtr<Fetch::Infrastructure::FetchController> fetch_controller)
{
m_fetch_controller = move(fetch_controller);
}
}
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