mirror of
https://github.com/fergalmoran/ladybird.git
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8a7cd8055f
This change is a preparation before introducing Skia painter in an upcoming change. It's needed because Skia does not have an API to implement ClearClipRect command. It only allows to return previous clip rect by popping from its internal state stack. A bit more context: initially we had save and restore commands, but their frequent use led to many reallocations of vector during painting commands recording. To resolve this, we switched to SegmentedVector to store commands list, which allows fast appends. Now, having many save and restore commands no longer causes noticeable performance issue.
111 lines
4.6 KiB
C++
111 lines
4.6 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 <AK/Forward.h>
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#include <AK/NonnullRefPtr.h>
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#include <AK/SegmentedVector.h>
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#include <AK/Utf8View.h>
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#include <AK/Vector.h>
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#include <LibGfx/AntiAliasingPainter.h>
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#include <LibGfx/Color.h>
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#include <LibGfx/Forward.h>
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#include <LibGfx/Gradients.h>
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#include <LibGfx/GrayscaleBitmap.h>
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#include <LibGfx/ImmutableBitmap.h>
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#include <LibGfx/PaintStyle.h>
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#include <LibGfx/Palette.h>
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#include <LibGfx/Point.h>
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#include <LibGfx/Rect.h>
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#include <LibGfx/Size.h>
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#include <LibGfx/TextAlignment.h>
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#include <LibGfx/TextDirection.h>
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#include <LibGfx/TextElision.h>
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#include <LibGfx/TextLayout.h>
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#include <LibGfx/TextWrapping.h>
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#include <LibWeb/CSS/Enums.h>
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#include <LibWeb/Painting/BorderRadiiData.h>
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#include <LibWeb/Painting/BorderRadiusCornerClipper.h>
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#include <LibWeb/Painting/Command.h>
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#include <LibWeb/Painting/GradientData.h>
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#include <LibWeb/Painting/PaintBoxShadowParams.h>
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namespace Web::Painting {
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enum class CommandResult {
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Continue,
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SkipStackingContext,
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ContinueWithNestedExecutor,
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ContinueWithParentExecutor
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};
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class CommandExecutor {
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public:
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virtual ~CommandExecutor() = default;
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virtual CommandResult draw_glyph_run(DrawGlyphRun const&) = 0;
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virtual CommandResult draw_text(DrawText const&) = 0;
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virtual CommandResult fill_rect(FillRect const&) = 0;
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virtual CommandResult draw_scaled_bitmap(DrawScaledBitmap const&) = 0;
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virtual CommandResult draw_scaled_immutable_bitmap(DrawScaledImmutableBitmap const&) = 0;
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virtual CommandResult save(Save const&) = 0;
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virtual CommandResult restore(Restore const&) = 0;
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virtual CommandResult add_clip_rect(AddClipRect const&) = 0;
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virtual CommandResult push_stacking_context(PushStackingContext const&) = 0;
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virtual CommandResult pop_stacking_context(PopStackingContext const&) = 0;
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virtual CommandResult paint_linear_gradient(PaintLinearGradient const&) = 0;
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virtual CommandResult paint_radial_gradient(PaintRadialGradient const&) = 0;
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virtual CommandResult paint_conic_gradient(PaintConicGradient const&) = 0;
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virtual CommandResult paint_outer_box_shadow(PaintOuterBoxShadow const&) = 0;
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virtual CommandResult paint_inner_box_shadow(PaintInnerBoxShadow const&) = 0;
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virtual CommandResult paint_text_shadow(PaintTextShadow const&) = 0;
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virtual CommandResult fill_rect_with_rounded_corners(FillRectWithRoundedCorners const&) = 0;
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virtual CommandResult fill_path_using_color(FillPathUsingColor const&) = 0;
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virtual CommandResult fill_path_using_paint_style(FillPathUsingPaintStyle const&) = 0;
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virtual CommandResult stroke_path_using_color(StrokePathUsingColor const&) = 0;
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virtual CommandResult stroke_path_using_paint_style(StrokePathUsingPaintStyle const&) = 0;
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virtual CommandResult draw_ellipse(DrawEllipse const&) = 0;
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virtual CommandResult fill_ellipse(FillEllipse const&) = 0;
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virtual CommandResult draw_line(DrawLine const&) = 0;
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virtual CommandResult apply_backdrop_filter(ApplyBackdropFilter const&) = 0;
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virtual CommandResult draw_rect(DrawRect const&) = 0;
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virtual CommandResult draw_triangle_wave(DrawTriangleWave const&) = 0;
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virtual CommandResult sample_under_corners(SampleUnderCorners const&) = 0;
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virtual CommandResult blit_corner_clipping(BlitCornerClipping const&) = 0;
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virtual bool would_be_fully_clipped_by_painter(Gfx::IntRect) const = 0;
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virtual bool needs_prepare_glyphs_texture() const { return false; }
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virtual void prepare_glyph_texture(HashMap<Gfx::Font const*, HashTable<u32>> const& unique_glyphs) = 0;
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virtual void prepare_to_execute([[maybe_unused]] size_t corner_clip_max_depth) { }
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virtual bool needs_update_immutable_bitmap_texture_cache() const = 0;
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virtual void update_immutable_bitmap_texture_cache(HashMap<u32, Gfx::ImmutableBitmap const*>&) = 0;
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virtual CommandExecutor& nested_executor() { VERIFY_NOT_REACHED(); }
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};
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class CommandList {
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public:
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void append(Command&& command, Optional<i32> scroll_frame_id);
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void apply_scroll_offsets(Vector<Gfx::IntPoint> const& offsets_by_frame_id);
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void mark_unnecessary_commands();
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void execute(CommandExecutor&);
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size_t corner_clip_max_depth() const { return m_corner_clip_max_depth; }
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void set_corner_clip_max_depth(size_t depth) { m_corner_clip_max_depth = depth; }
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private:
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struct CommandListItem {
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Optional<i32> scroll_frame_id;
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Command command;
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bool skip { false };
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};
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size_t m_corner_clip_max_depth { 0 };
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AK::SegmentedVector<CommandListItem, 512> m_commands;
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};
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}
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