100 lines
3 KiB
C++
100 lines
3 KiB
C++
/*
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* Copyright (c) 2020-2022, Andreas Kling <kling@serenityos.org>
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* Copyright (c) 2024, Kenneth Myhra <kennethmyhra@serenityos.org>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include <LibGfx/Bitmap.h>
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#include <LibJS/Runtime/TypedArray.h>
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#include <LibWeb/Bindings/Intrinsics.h>
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#include <LibWeb/HTML/ImageData.h>
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#include <LibWeb/WebIDL/DOMException.h>
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#include <LibWeb/WebIDL/ExceptionOr.h>
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namespace Web::HTML {
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JS_DEFINE_ALLOCATOR(ImageData);
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WebIDL::ExceptionOr<JS::NonnullGCPtr<ImageData>> ImageData::create(JS::Realm& realm, u32 sw, u32 sh, Optional<ImageDataSettings> const&)
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{
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auto& vm = realm.vm();
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// 1. If one or both of sw and sh are zero, then throw an "IndexSizeError" DOMException.
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if (sw == 0 || sh == 0)
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return WebIDL::IndexSizeError::create(realm, "The source width and height must be greater than zero."_fly_string);
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// 2. Initialize this given sw, sh, and settings set to settings.
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// 3. Initialize the image data of this to transparent black.
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auto data = TRY(JS::Uint8ClampedArray::create(realm, sw * sh * 4));
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auto bitmap = TRY_OR_THROW_OOM(vm, Gfx::Bitmap::create_wrapper(Gfx::BitmapFormat::RGBA8888, Gfx::IntSize(sw, sw), 1, sw * sizeof(u32), data->data().data()));
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return realm.heap().allocate<ImageData>(realm, realm, bitmap, data);
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}
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WebIDL::ExceptionOr<JS::NonnullGCPtr<ImageData>> ImageData::construct_impl(JS::Realm& realm, u32 sw, u32 sh, Optional<ImageDataSettings> const& settings)
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{
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return ImageData::create(realm, sw, sh, settings);
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}
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JS::GCPtr<ImageData> ImageData::create_with_size(JS::Realm& realm, int width, int height)
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{
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if (width <= 0 || height <= 0)
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return nullptr;
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if (width > 16384 || height > 16384)
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return nullptr;
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auto data_or_error = JS::Uint8ClampedArray::create(realm, width * height * 4);
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if (data_or_error.is_error())
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return nullptr;
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auto data = JS::NonnullGCPtr<JS::Uint8ClampedArray>(*data_or_error.release_value());
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auto bitmap_or_error = Gfx::Bitmap::create_wrapper(Gfx::BitmapFormat::RGBA8888, Gfx::IntSize(width, height), 1, width * sizeof(u32), data->data().data());
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if (bitmap_or_error.is_error())
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return nullptr;
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return realm.heap().allocate<ImageData>(realm, realm, bitmap_or_error.release_value(), move(data));
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}
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ImageData::ImageData(JS::Realm& realm, NonnullRefPtr<Gfx::Bitmap> bitmap, JS::NonnullGCPtr<JS::Uint8ClampedArray> data)
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: PlatformObject(realm)
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, m_bitmap(move(bitmap))
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, m_data(move(data))
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{
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}
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ImageData::~ImageData() = default;
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void ImageData::initialize(JS::Realm& realm)
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{
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Base::initialize(realm);
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WEB_SET_PROTOTYPE_FOR_INTERFACE(ImageData);
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}
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void ImageData::visit_edges(Cell::Visitor& visitor)
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{
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Base::visit_edges(visitor);
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visitor.visit(m_data);
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}
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unsigned ImageData::width() const
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{
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return m_bitmap->width();
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}
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unsigned ImageData::height() const
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{
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return m_bitmap->height();
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}
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JS::Uint8ClampedArray* ImageData::data()
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{
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return m_data;
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}
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const JS::Uint8ClampedArray* ImageData::data() const
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{
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return m_data;
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}
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}
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