mirror of
https://github.com/LadybirdBrowser/ladybird.git
synced 2025-01-24 10:12:25 -05:00
f87041bf3a
Resulting in a massive rename across almost everywhere! Alongside the namespace change, we now have the following names: * JS::NonnullGCPtr -> GC::Ref * JS::GCPtr -> GC::Ptr * JS::HeapFunction -> GC::Function * JS::CellImpl -> GC::Cell * JS::Handle -> GC::Root
140 lines
5 KiB
C++
140 lines
5 KiB
C++
/*
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* Copyright (c) 2023, Andreas Kling <andreas@ladybird.org>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include <AK/HashTable.h>
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#include <LibGfx/Bitmap.h>
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#include <LibWeb/Fetch/Fetching/Fetching.h>
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#include <LibWeb/Fetch/Infrastructure/FetchAlgorithms.h>
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#include <LibWeb/Fetch/Infrastructure/FetchController.h>
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#include <LibWeb/Fetch/Infrastructure/HTTP/Responses.h>
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#include <LibWeb/HTML/AnimatedBitmapDecodedImageData.h>
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#include <LibWeb/HTML/DecodedImageData.h>
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#include <LibWeb/HTML/ImageRequest.h>
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#include <LibWeb/HTML/ListOfAvailableImages.h>
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#include <LibWeb/HTML/SharedResourceRequest.h>
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#include <LibWeb/Page/Page.h>
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#include <LibWeb/Platform/ImageCodecPlugin.h>
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#include <LibWeb/SVG/SVGDecodedImageData.h>
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namespace Web::HTML {
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GC_DEFINE_ALLOCATOR(ImageRequest);
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GC::Ref<ImageRequest> ImageRequest::create(JS::Realm& realm, GC::Ref<Page> page)
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{
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return realm.create<ImageRequest>(page);
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}
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ImageRequest::ImageRequest(GC::Ref<Page> page)
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: m_page(page)
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{
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}
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ImageRequest::~ImageRequest()
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{
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}
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void ImageRequest::visit_edges(JS::Cell::Visitor& visitor)
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{
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Base::visit_edges(visitor);
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visitor.visit(m_shared_resource_request);
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visitor.visit(m_page);
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visitor.visit(m_image_data);
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}
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// https://html.spec.whatwg.org/multipage/images.html#img-available
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bool ImageRequest::is_available() const
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{
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// When an image request's state is either partially available or completely available, the image request is said to be available.
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return m_state == State::PartiallyAvailable || m_state == State::CompletelyAvailable;
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}
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bool ImageRequest::is_fetching() const
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{
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return m_shared_resource_request && m_shared_resource_request->is_fetching();
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}
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ImageRequest::State ImageRequest::state() const
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{
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return m_state;
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}
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void ImageRequest::set_state(State state)
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{
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m_state = state;
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}
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URL::URL const& ImageRequest::current_url() const
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{
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return m_current_url;
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}
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void ImageRequest::set_current_url(JS::Realm& realm, URL::URL url)
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{
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m_current_url = move(url);
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if (m_current_url.is_valid())
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m_shared_resource_request = SharedResourceRequest::get_or_create(realm, m_page, m_current_url);
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}
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// https://html.spec.whatwg.org/multipage/images.html#abort-the-image-request
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void abort_the_image_request(JS::Realm&, ImageRequest* image_request)
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{
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// 1. If image request is null, then return.
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if (!image_request)
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return;
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// 2. Forget image request's image data, if any.
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image_request->set_image_data(nullptr);
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// 3. Abort any instance of the fetching algorithm for image request,
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// discarding any pending tasks generated by that algorithm.
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// AD-HOC: We simply don't do this, since our SharedResourceRequest may be used by someone else.
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}
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GC::Ptr<DecodedImageData> ImageRequest::image_data() const
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{
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return m_image_data;
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}
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void ImageRequest::set_image_data(GC::Ptr<DecodedImageData> data)
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{
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m_image_data = data;
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}
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// https://html.spec.whatwg.org/multipage/images.html#prepare-an-image-for-presentation
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void ImageRequest::prepare_for_presentation(HTMLImageElement&)
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{
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// FIXME: 1. Let exifTagMap be the EXIF tags obtained from req's image data, as defined by the relevant codec. [EXIF]
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// FIXME: 2. Let physicalWidth and physicalHeight be the width and height obtained from req's image data, as defined by the relevant codec.
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// FIXME: 3. Let dimX be the value of exifTagMap's tag 0xA002 (PixelXDimension).
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// FIXME: 4. Let dimY be the value of exifTagMap's tag 0xA003 (PixelYDimension).
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// FIXME: 5. Let resX be the value of exifTagMap's tag 0x011A (XResolution).
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// FIXME: 6. Let resY be the value of exifTagMap's tag 0x011B (YResolution).
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// FIXME: 7. Let resUnit be the value of exifTagMap's tag 0x0128 (ResolutionUnit).
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// FIXME: 8. If either dimX or dimY is not a positive integer, then return.
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// FIXME: 9. If either resX or resY is not a positive floating-point number, then return.
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// FIXME: 10. If resUnit is not equal to 2 (Inch), then return.
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// FIXME: 11. Let widthFromDensity be the value of physicalWidth, multiplied by 72 and divided by resX.
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// FIXME: 12. Let heightFromDensity be the value of physicalHeight, multiplied by 72 and divided by resY.
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// FIXME: 13. If widthFromDensity is not equal to dimX or heightFromDensity is not equal to dimY, then return.
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// 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.
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// FIXME: 15. Set req's preferred density-corrected dimensions to a struct with its width set to dimX and its height set to dimY.
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// FIXME: 16. Update req's img element's presentation appropriately.
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}
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void ImageRequest::fetch_image(JS::Realm& realm, GC::Ref<Fetch::Infrastructure::Request> request)
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{
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VERIFY(m_shared_resource_request);
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m_shared_resource_request->fetch_resource(realm, request);
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}
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void ImageRequest::add_callbacks(Function<void()> on_finish, Function<void()> on_fail)
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{
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VERIFY(m_shared_resource_request);
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m_shared_resource_request->add_callbacks(move(on_finish), move(on_fail));
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}
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}
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