jcs.org
Serenity Operating System
1/*
2 * Copyright (c) 2020-2022, Andreas Kling <kling@serenityos.org>
3 *
4 * SPDX-License-Identifier: BSD-2-Clause
5 */
6
7#include <LibGfx/Bitmap.h>
8#include <LibJS/Runtime/TypedArray.h>
9#include <LibWeb/Bindings/Intrinsics.h>
10#include <LibWeb/HTML/ImageData.h>
11
12namespace Web::HTML {
13
14JS::GCPtr<ImageData> ImageData::create_with_size(JS::Realm& realm, int width, int height)
15{
16
17 if (width <= 0 || height <= 0)
18 return nullptr;
19
20 if (width > 16384 || height > 16384)
21 return nullptr;
22
23 auto data_or_error = JS::Uint8ClampedArray::create(realm, width * height * 4);
24 if (data_or_error.is_error())
25 return nullptr;
26 auto data = JS::NonnullGCPtr<JS::Uint8ClampedArray>(*data_or_error.release_value());
27
28 auto bitmap_or_error = Gfx::Bitmap::create_wrapper(Gfx::BitmapFormat::RGBA8888, Gfx::IntSize(width, height), 1, width * sizeof(u32), data->data().data());
29 if (bitmap_or_error.is_error())
30 return nullptr;
31 return realm.heap().allocate<ImageData>(realm, realm, bitmap_or_error.release_value(), move(data)).release_allocated_value_but_fixme_should_propagate_errors();
32}
33
34ImageData::ImageData(JS::Realm& realm, NonnullRefPtr<Gfx::Bitmap> bitmap, JS::NonnullGCPtr<JS::Uint8ClampedArray> data)
35 : PlatformObject(realm)
36 , m_bitmap(move(bitmap))
37 , m_data(move(data))
38{
39}
40
41ImageData::~ImageData() = default;
42
43JS::ThrowCompletionOr<void> ImageData::initialize(JS::Realm& realm)
44{
45 MUST_OR_THROW_OOM(Base::initialize(realm));
46 set_prototype(&Bindings::ensure_web_prototype<Bindings::ImageDataPrototype>(realm, "ImageData"));
47
48 return {};
49}
50
51void ImageData::visit_edges(Cell::Visitor& visitor)
52{
53 Base::visit_edges(visitor);
54 visitor.visit(m_data.ptr());
55}
56
57unsigned ImageData::width() const
58{
59 return m_bitmap->width();
60}
61
62unsigned ImageData::height() const
63{
64 return m_bitmap->height();
65}
66
67JS::Uint8ClampedArray* ImageData::data()
68{
69 return m_data;
70}
71
72const JS::Uint8ClampedArray* ImageData::data() const
73{
74 return m_data;
75}
76
77}