mirror of
https://github.com/LadybirdBrowser/ladybird
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9d2ebe90ed
Replace per-node heap-allocated AtomicRefCounted AccumulatedVisualContext objects with a single contiguous Vector inside AccumulatedVisualContextTree. All nodes for a frame are now stored in one allocation, using type-safe VisualContextIndex instead of RefPtr pointers. This reduces allocation churn, improves cache locality, and opens the door for future snapshotting of visual context state — similar to how scroll offsets are snapshotted today.
104 lines
4.1 KiB
C++
104 lines
4.1 KiB
C++
/*
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* Copyright (c) 2024-2026, Aliaksandr Kalenik <kalenik.aliaksandr@gmail.com>
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* Copyright (c) 2025, Jelle Raaijmakers <jelle@ladybird.org>
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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 <AK/Forward.h>
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#include <AK/NonnullRefPtr.h>
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#include <AK/SegmentedVector.h>
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#include <LibGfx/Color.h>
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#include <LibGfx/Forward.h>
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#include <LibGfx/PaintStyle.h>
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#include <LibWeb/Forward.h>
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#include <LibWeb/Painting/AccumulatedVisualContext.h>
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#include <LibWeb/Painting/DisplayListCommand.h>
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#include <LibWeb/Painting/ScrollState.h>
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namespace Web::Painting {
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class DisplayListPlayer {
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public:
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virtual ~DisplayListPlayer() = default;
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void execute(DisplayList&, ScrollStateSnapshotByDisplayList&&, RefPtr<Gfx::PaintingSurface>);
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protected:
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Gfx::PaintingSurface& surface() const { return *m_surface; }
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void execute_impl(DisplayList&, ScrollStateSnapshot const& scroll_state);
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void execute_display_list_into_surface(DisplayList&, Gfx::PaintingSurface&);
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ScrollStateSnapshotByDisplayList m_scroll_state_snapshots_by_display_list;
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private:
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virtual void flush() = 0;
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virtual void draw_glyph_run(DrawGlyphRun const&) = 0;
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virtual void fill_rect(FillRect const&) = 0;
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virtual void draw_scaled_immutable_bitmap(DrawScaledImmutableBitmap const&) = 0;
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virtual void draw_repeated_immutable_bitmap(DrawRepeatedImmutableBitmap const&) = 0;
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virtual void draw_external_content(DrawExternalContent const&) = 0;
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virtual void save(Save const&) = 0;
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virtual void save_layer(SaveLayer const&) = 0;
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virtual void restore(Restore const&) = 0;
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virtual void translate(Translate const&) = 0;
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virtual void add_clip_rect(AddClipRect const&) = 0;
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virtual void paint_linear_gradient(PaintLinearGradient const&) = 0;
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virtual void paint_radial_gradient(PaintRadialGradient const&) = 0;
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virtual void paint_conic_gradient(PaintConicGradient const&) = 0;
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virtual void paint_outer_box_shadow(PaintOuterBoxShadow const&) = 0;
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virtual void paint_inner_box_shadow(PaintInnerBoxShadow const&) = 0;
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virtual void paint_text_shadow(PaintTextShadow const&) = 0;
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virtual void fill_rect_with_rounded_corners(FillRectWithRoundedCorners const&) = 0;
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virtual void fill_path(FillPath const&) = 0;
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virtual void stroke_path(StrokePath const&) = 0;
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virtual void draw_ellipse(DrawEllipse const&) = 0;
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virtual void fill_ellipse(FillEllipse const&) = 0;
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virtual void draw_line(DrawLine const&) = 0;
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virtual void apply_backdrop_filter(ApplyBackdropFilter const&) = 0;
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virtual void draw_rect(DrawRect const&) = 0;
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virtual void add_rounded_rect_clip(AddRoundedRectClip const&) = 0;
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virtual void paint_nested_display_list(PaintNestedDisplayList const&) = 0;
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virtual void paint_scrollbar(PaintScrollBar const&) = 0;
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virtual void apply_effects(ApplyEffects const&) = 0;
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virtual void apply_transform(Gfx::FloatPoint origin, Gfx::FloatMatrix4x4 const&) = 0;
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virtual bool would_be_fully_clipped_by_painter(Gfx::IntRect) const = 0;
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virtual void add_clip_path(Gfx::Path const&) = 0;
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RefPtr<Gfx::PaintingSurface> m_surface;
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};
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class DisplayList : public AtomicRefCounted<DisplayList> {
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public:
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static NonnullRefPtr<DisplayList> create(NonnullRefPtr<AccumulatedVisualContextTree const> visual_context_tree)
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{
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return adopt_ref(*new DisplayList(move(visual_context_tree)));
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}
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bool append(DisplayListCommand&& command, VisualContextIndex context_index);
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struct CommandListItem {
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VisualContextIndex context_index {};
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DisplayListCommand command;
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};
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AccumulatedVisualContextTree const& visual_context_tree() const { return *m_visual_context_tree; }
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auto& commands(Badge<DisplayListRecorder>) { return m_commands; }
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auto const& commands() const { return m_commands; }
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private:
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explicit DisplayList(NonnullRefPtr<AccumulatedVisualContextTree const> visual_context_tree)
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: m_visual_context_tree(move(visual_context_tree))
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{
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}
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NonnullRefPtr<AccumulatedVisualContextTree const> const m_visual_context_tree;
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AK::SegmentedVector<CommandListItem, 512> m_commands;
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};
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}
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