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77 lines
2.3 KiB
C++
77 lines
2.3 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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#include <LibWeb/Painting/ClippableAndScrollable.h>
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#include <LibWeb/Painting/PaintContext.h>
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namespace Web::Painting {
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Optional<int> ClippableAndScrollable::own_scroll_frame_id() const
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{
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if (m_own_scroll_frame)
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return m_own_scroll_frame->id();
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return {};
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}
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Optional<int> ClippableAndScrollable::scroll_frame_id() const
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{
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if (m_enclosing_scroll_frame)
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return m_enclosing_scroll_frame->id();
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return {};
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}
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CSSPixelPoint ClippableAndScrollable::cumulative_offset_of_enclosing_scroll_frame() const
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{
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if (m_enclosing_scroll_frame)
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return m_enclosing_scroll_frame->cumulative_offset();
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return {};
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}
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Optional<CSSPixelRect> ClippableAndScrollable::clip_rect_for_hit_testing() const
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{
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if (m_enclosing_clip_frame)
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return m_enclosing_clip_frame->clip_rect_for_hit_testing();
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return {};
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}
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void ClippableAndScrollable::apply_clip(PaintContext& context) const
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{
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if (!m_enclosing_clip_frame)
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return;
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auto const& clip_rects = m_enclosing_clip_frame->clip_rects();
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if (clip_rects.is_empty())
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return;
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auto& display_list_recorder = context.display_list_recorder();
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display_list_recorder.save();
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for (auto const& clip_rect : clip_rects) {
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Optional<i32> clip_scroll_frame_id;
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if (clip_rect.enclosing_scroll_frame)
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clip_scroll_frame_id = clip_rect.enclosing_scroll_frame->id();
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display_list_recorder.push_scroll_frame_id(clip_scroll_frame_id);
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auto rect = context.rounded_device_rect(clip_rect.rect).to_type<int>();
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auto corner_radii = clip_rect.corner_radii.as_corners(context);
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if (corner_radii.has_any_radius()) {
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display_list_recorder.add_rounded_rect_clip(corner_radii, rect, CornerClip::Outside);
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} else {
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display_list_recorder.add_clip_rect(rect);
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}
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display_list_recorder.pop_scroll_frame_id();
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}
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}
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void ClippableAndScrollable::restore_clip(PaintContext& context) const
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{
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if (!m_enclosing_clip_frame)
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return;
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auto const& clip_rects = m_enclosing_clip_frame->clip_rects();
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if (clip_rects.is_empty())
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return;
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context.display_list_recorder().restore();
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}
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}
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