mirror of
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63 lines
1.7 KiB
C++
63 lines
1.7 KiB
C++
/*
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* Copyright (c) 2023, Andreas Kling <andreas@ladybird.org>
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* Copyright (c) 2025, Aliaksandr Kalenik <kalenik.aliaksandr@gmail.com>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#pragma once
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#include <LibWeb/DOM/EventTarget.h>
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#include <LibWeb/PixelUnits.h>
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namespace Web::CSS {
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// https://drafts.csswg.org/cssom-view/#visualviewport
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class VisualViewport final : public DOM::EventTarget {
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WEB_PLATFORM_OBJECT(VisualViewport, DOM::EventTarget);
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GC_DECLARE_ALLOCATOR(VisualViewport);
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public:
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[[nodiscard]] static GC::Ref<VisualViewport> create(DOM::Document&);
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virtual ~VisualViewport() override = default;
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CSSPixelPoint offset() const { return m_offset; }
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[[nodiscard]] double offset_left() const;
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[[nodiscard]] double offset_top() const;
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[[nodiscard]] double page_left() const;
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[[nodiscard]] double page_top() const;
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[[nodiscard]] double width() const;
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[[nodiscard]] double height() const;
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[[nodiscard]] double scale() const;
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void set_onresize(WebIDL::CallbackType*);
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WebIDL::CallbackType* onresize();
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void set_onscroll(WebIDL::CallbackType*);
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WebIDL::CallbackType* onscroll();
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void set_onscrollend(WebIDL::CallbackType*);
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WebIDL::CallbackType* onscrollend();
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void scroll_by(CSSPixelPoint delta) { m_offset += delta; }
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[[nodiscard]] Gfx::AffineTransform transform() const;
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void zoom(CSSPixelPoint position, double scale_delta);
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CSSPixelPoint map_to_layout_viewport(CSSPixelPoint) const;
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void reset();
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private:
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explicit VisualViewport(DOM::Document&);
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virtual void initialize(JS::Realm&) override;
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virtual void visit_edges(Cell::Visitor&) override;
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GC::Ref<DOM::Document> m_document;
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CSSPixelPoint m_offset;
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double m_scale { 1.0 };
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};
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}
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