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6452bfb612
This way we don't have to allocate separate vector with both scroll and sticky frame that is used for display list player (scroll and sticky frames share id pool), so player could access offset by frame id. No behavior change.
63 lines
1.7 KiB
C++
63 lines
1.7 KiB
C++
/*
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* Copyright (c) 2024, 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/Painting/ScrollFrame.h>
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namespace Web::Painting {
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class ScrollState {
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public:
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NonnullRefPtr<ScrollFrame> create_scroll_frame_for(PaintableBox const& paintable_box, RefPtr<ScrollFrame const> parent)
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{
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auto scroll_frame = adopt_ref(*new ScrollFrame(paintable_box, m_scroll_frames.size(), false, move(parent)));
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m_scroll_frames.append(scroll_frame);
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return scroll_frame;
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}
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NonnullRefPtr<ScrollFrame> create_sticky_frame_for(PaintableBox const& paintable_box, RefPtr<ScrollFrame const> parent)
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{
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auto scroll_frame = adopt_ref(*new ScrollFrame(paintable_box, m_scroll_frames.size(), true, move(parent)));
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m_scroll_frames.append(scroll_frame);
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return scroll_frame;
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}
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CSSPixelPoint cumulative_offset_for_frame_with_id(size_t id) const
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{
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return m_scroll_frames[id]->cumulative_offset();
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}
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CSSPixelPoint own_offset_for_frame_with_id(size_t id) const
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{
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return m_scroll_frames[id]->own_offset();
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}
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template<typename Callback>
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void for_each_scroll_frame(Callback callback) const
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{
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for (auto const& scroll_frame : m_scroll_frames) {
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if (scroll_frame->is_sticky())
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continue;
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callback(scroll_frame);
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}
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}
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template<typename Callback>
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void for_each_sticky_frame(Callback callback) const
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{
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for (auto const& scroll_frame : m_scroll_frames) {
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if (!scroll_frame->is_sticky())
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continue;
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callback(scroll_frame);
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}
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}
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private:
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Vector<NonnullRefPtr<ScrollFrame>> m_scroll_frames;
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};
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}
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