jcs.org
Serenity Operating System
1/*
2 * Copyright (c) 2018-2022, Andreas Kling <kling@serenityos.org>
3 *
4 * SPDX-License-Identifier: BSD-2-Clause
5 */
6
7#pragma once
8
9#include <AK/OwnPtr.h>
10#include <LibGfx/Rect.h>
11#include <LibJS/Heap/Cell.h>
12#include <LibWeb/Layout/Node.h>
13
14namespace Web::Layout {
15
16struct LineBoxFragmentCoordinate {
17 size_t line_box_index { 0 };
18 size_t fragment_index { 0 };
19};
20
21class Box : public NodeWithStyleAndBoxModelMetrics {
22 JS_CELL(Box, NodeWithStyleAndBoxModelMetrics);
23
24public:
25 Painting::PaintableBox const* paint_box() const;
26
27 virtual void set_needs_display() override;
28
29 bool is_body() const;
30
31 virtual Optional<CSSPixels> intrinsic_width() const { return {}; }
32 virtual Optional<CSSPixels> intrinsic_height() const { return {}; }
33 virtual Optional<float> intrinsic_aspect_ratio() const { return {}; }
34
35 bool has_intrinsic_width() const { return intrinsic_width().has_value(); }
36 bool has_intrinsic_height() const { return intrinsic_height().has_value(); }
37 bool has_intrinsic_aspect_ratio() const { return intrinsic_aspect_ratio().has_value(); }
38
39 virtual ~Box() override;
40
41 virtual void did_set_rect() { }
42
43 virtual JS::GCPtr<Painting::Paintable> create_paintable() const override;
44
45 bool is_scrollable() const;
46 CSSPixelPoint scroll_offset() const { return m_scroll_offset; }
47 void set_scroll_offset(CSSPixelPoint);
48
49protected:
50 Box(DOM::Document&, DOM::Node*, NonnullRefPtr<CSS::StyleProperties>);
51 Box(DOM::Document&, DOM::Node*, CSS::ComputedValues);
52
53private:
54 virtual bool is_box() const final { return true; }
55
56 CSSPixelPoint m_scroll_offset;
57};
58
59template<>
60inline bool Node::fast_is<Box>() const { return is_box(); }
61
62}