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https://github.com/LadybirdBrowser/ladybird
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2c0f03f5b6
Contrary to LibGfx, where corner clipping was implemented by sampling and blitting pixels under corners into a temporary bitmap, Skia allows us to simply apply a mask. As a result, we no longer need the BlitCornerClipping command, which has become a no-op. - SampleUnderCorners is renamed to AddRoundedRectClip - The optimization that skipped unnecessary blit and sample commands has been removed. However, this should not result in a performance regression because Skia seems to perform mask rasterization lazily.
36 lines
1.1 KiB
C++
36 lines
1.1 KiB
C++
/*
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* Copyright (c) 2022, MacDue <macdue@dueutil.tech>
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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/BorderRadiusCornerClipper.h>
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#include <LibWeb/Painting/PaintContext.h>
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namespace Web::Painting {
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ScopedCornerRadiusClip::ScopedCornerRadiusClip(PaintContext& context, DevicePixelRect const& border_rect, BorderRadiiData const& border_radii, CornerClip corner_clip)
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: m_context(context)
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{
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CornerRadii const corner_radii {
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.top_left = border_radii.top_left.as_corner(context),
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.top_right = border_radii.top_right.as_corner(context),
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.bottom_right = border_radii.bottom_right.as_corner(context),
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.bottom_left = border_radii.bottom_left.as_corner(context)
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};
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m_has_radius = corner_radii.has_any_radius();
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if (!m_has_radius)
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return;
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m_context.display_list_recorder().save();
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m_context.display_list_recorder().add_rounded_rect_clip(corner_radii, border_rect.to_type<int>(), corner_clip);
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}
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ScopedCornerRadiusClip::~ScopedCornerRadiusClip()
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{
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if (!m_has_radius)
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return;
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m_context.display_list_recorder().restore();
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}
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}
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