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c2e21d33eb
The `as_corner()` and `floored_device_pixels()` functions popped up frequently in profiles when selecting text on some Tweakers.net pages. For every corner we're performing multiple device pixel calculations regardless of whether any radius was actually set. Add an early return if no radius is set. On my machine this reduces the time taken in both `as_corner()` and `floored_device_pixels()` by 46% (63% fewer calls).
107 lines
2.8 KiB
C++
107 lines
2.8 KiB
C++
/*
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* Copyright (c) 2020, Andreas Kling <andreas@ladybird.org>
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* Copyright (c) 2021-2023, Sam Atkins <atkinssj@serenityos.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 <LibWeb/CSS/ComputedValues.h>
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namespace Web::Painting {
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struct CornerRadius {
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int horizontal_radius { 0 };
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int vertical_radius { 0 };
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inline operator bool() const
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{
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return horizontal_radius > 0 && vertical_radius > 0;
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}
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};
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struct BorderRadiusData {
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CSSPixels horizontal_radius { 0 };
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CSSPixels vertical_radius { 0 };
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CornerRadius as_corner(PaintContext const& context) const;
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inline operator bool() const
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{
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return horizontal_radius > 0 && vertical_radius > 0;
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}
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inline void shrink(CSSPixels horizontal, CSSPixels vertical)
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{
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if (horizontal_radius != 0)
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horizontal_radius = max(CSSPixels(0), horizontal_radius - horizontal);
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if (vertical_radius != 0)
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vertical_radius = max(CSSPixels(0), vertical_radius - vertical);
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}
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inline void union_max_radii(BorderRadiusData const& other)
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{
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horizontal_radius = max(horizontal_radius, other.horizontal_radius);
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vertical_radius = max(vertical_radius, other.vertical_radius);
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}
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};
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struct CornerRadii {
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CornerRadius top_left;
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CornerRadius top_right;
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CornerRadius bottom_right;
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CornerRadius bottom_left;
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inline bool has_any_radius() const
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{
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return top_left || top_right || bottom_right || bottom_left;
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}
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};
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struct BorderRadiiData {
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BorderRadiusData top_left;
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BorderRadiusData top_right;
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BorderRadiusData bottom_right;
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BorderRadiusData bottom_left;
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inline bool has_any_radius() const
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{
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return top_left || top_right || bottom_right || bottom_left;
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}
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inline void union_max_radii(BorderRadiiData const& other)
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{
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top_left.union_max_radii(other.top_left);
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top_right.union_max_radii(other.top_right);
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bottom_right.union_max_radii(other.bottom_right);
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bottom_left.union_max_radii(other.bottom_left);
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}
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inline void shrink(CSSPixels top, CSSPixels right, CSSPixels bottom, CSSPixels left)
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{
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top_left.shrink(left, top);
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top_right.shrink(right, top);
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bottom_right.shrink(right, bottom);
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bottom_left.shrink(left, bottom);
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}
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inline void inflate(CSSPixels top, CSSPixels right, CSSPixels bottom, CSSPixels left)
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{
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shrink(-top, -right, -bottom, -left);
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}
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inline CornerRadii as_corners(PaintContext const& context) const
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{
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if (!has_any_radius())
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return {};
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return CornerRadii {
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top_left.as_corner(context),
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top_right.as_corner(context),
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bottom_right.as_corner(context),
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bottom_left.as_corner(context)
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};
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}
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};
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}
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