mirror of
https://github.com/LadybirdBrowser/ladybird
synced 2026-04-26 17:55:07 +02:00
3e54291813
Move the visual viewport (pinch-to-zoom) transform from a reserved slot in DisplayList to the AccumulatedVisualContext tree as a root transform node. Fixed position elements now correctly inherit from this context. This requires rebuilding the context tree and display list on each zoom change, but this overhead will be eliminated by future partial context tree rebuilds.
75 lines
2.5 KiB
C++
75 lines
2.5 KiB
C++
/*
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* Copyright (c) 2023, Andreas Kling <andreas@ladybird.org>
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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/Export.h>
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#include <LibWeb/Painting/PaintableWithLines.h>
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#include <LibWeb/Painting/ScrollState.h>
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namespace Web::Painting {
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class WEB_API ViewportPaintable final : public PaintableWithLines {
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GC_CELL(ViewportPaintable, PaintableWithLines);
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GC_DECLARE_ALLOCATOR(ViewportPaintable);
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public:
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static GC::Ref<ViewportPaintable> create(Layout::Viewport const&);
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virtual ~ViewportPaintable() override;
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virtual void reset_for_relayout() override;
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void paint_all_phases(DisplayListRecordingContext&);
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void build_stacking_context_tree_if_needed();
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void assign_scroll_frames();
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void refresh_scroll_state();
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void assign_accumulated_visual_contexts();
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void resolve_paint_only_properties();
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GC::Ptr<Selection::Selection> selection() const;
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void recompute_selection_states(DOM::Range&);
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bool handle_mousewheel(Badge<EventHandler>, CSSPixelPoint, unsigned, unsigned, int wheel_delta_x, int wheel_delta_y) override;
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void set_needs_to_refresh_scroll_state(bool value) { m_needs_to_refresh_scroll_state = value; }
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ScrollState const& scroll_state() const { return m_scroll_state; }
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ScrollStateSnapshot const& scroll_state_snapshot() const { return m_scroll_state_snapshot; }
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void set_paintable_boxes_with_auto_content_visibility(Vector<GC::Ref<PaintableBox>> paintable_boxes) { m_paintable_boxes_with_auto_content_visibility = move(paintable_boxes); }
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ReadonlySpan<GC::Ref<PaintableBox>> paintable_boxes_with_auto_content_visibility() const { return m_paintable_boxes_with_auto_content_visibility; }
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size_t allocate_accumulated_visual_context_id() { return m_next_accumulated_visual_context_id++; }
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private:
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virtual bool is_viewport_paintable() const override { return true; }
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void build_stacking_context_tree();
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explicit ViewportPaintable(Layout::Viewport const&);
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virtual void visit_edges(Visitor&) override;
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ScrollState m_scroll_state;
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ScrollStateSnapshot m_scroll_state_snapshot;
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bool m_needs_to_refresh_scroll_state { true };
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Vector<GC::Ref<PaintableBox>> m_paintable_boxes_with_auto_content_visibility;
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size_t m_next_accumulated_visual_context_id { 1 };
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RefPtr<AccumulatedVisualContext const> m_visual_viewport_context;
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};
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template<>
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inline bool Paintable::fast_is<ViewportPaintable>() const { return is_viewport_paintable(); }
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}
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