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https://github.com/RGBCube/serenity
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ThemeEditor: Implement a way to simulate color blindness in preview
Implement a mechanism that allows us to alter colors so that they mimic those a colorblind person would see. From the color we can then alter the colors for the whole preview so we can simulate everything in the theme including icons/decorations. This filter is also available as a Filter in LibGfx so it can be reused in multiple other places. The color simulation algorithm is based on this one https://github.com/MaPePeR/jsColorblindSimulator publicly available.
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7 changed files with 289 additions and 0 deletions
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@ -13,6 +13,7 @@ set(SOURCES
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DDSLoader.cpp
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DisjointRectSet.cpp
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Emoji.cpp
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Filters/ColorBlindnessFilter.cpp
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Filters/FastBoxBlurFilter.cpp
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FontDatabase.cpp
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GIFLoader.cpp
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84
Userland/Libraries/LibGfx/Filters/ColorBlindnessFilter.cpp
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84
Userland/Libraries/LibGfx/Filters/ColorBlindnessFilter.cpp
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/*
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* Copyright (c) 2021, Antonio Di Stefano <tonio9681@gmail.com>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include "ColorBlindnessFilter.h"
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namespace Gfx {
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NonnullOwnPtr<ColorBlindnessFilter> ColorBlindnessFilter::create_protanopia()
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{
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return make<ColorBlindnessFilter>(
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.56, .44, .0,
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.55, .45, .0,
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.0, .24, .76);
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}
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NonnullOwnPtr<ColorBlindnessFilter> ColorBlindnessFilter::create_protanomaly()
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{
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return make<ColorBlindnessFilter>(
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.82, .18, .0,
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.33, .67, .0,
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.0, .13, .87);
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}
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NonnullOwnPtr<ColorBlindnessFilter> ColorBlindnessFilter::create_deuteranopia()
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{
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return make<ColorBlindnessFilter>(
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.63, .37, .0,
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.7, .3, .0,
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.0, .3, .7);
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}
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NonnullOwnPtr<ColorBlindnessFilter> ColorBlindnessFilter::create_deuteranomaly()
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{
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return make<ColorBlindnessFilter>(
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.8, .2, .0,
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.26, .74, .0,
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.0, .15, .85);
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}
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NonnullOwnPtr<ColorBlindnessFilter> ColorBlindnessFilter::create_tritanopia()
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{
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return make<ColorBlindnessFilter>(
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.95, .05, .0,
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.0, .44, .56,
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.0, .48, .52);
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}
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NonnullOwnPtr<ColorBlindnessFilter> ColorBlindnessFilter::create_tritanomaly()
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{
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return make<ColorBlindnessFilter>(
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.97, .03, .0,
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.0, .73, .27,
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.0, .18, .82);
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}
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NonnullOwnPtr<ColorBlindnessFilter> ColorBlindnessFilter::create_achromatopsia()
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{
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return make<ColorBlindnessFilter>(
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.3, .59, .11,
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.3, .59, .11,
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.3, .59, .11);
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}
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NonnullOwnPtr<ColorBlindnessFilter> ColorBlindnessFilter::create_achromatomaly()
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{
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return make<ColorBlindnessFilter>(
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.62, .32, .06,
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.16, .78, .06,
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.16, .32, .52);
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}
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Color ColorBlindnessFilter::convert_color(Color original)
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{
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return Color(
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(u8)(original.red() * m_red_in_red_band + original.green() * m_green_in_red_band + original.blue() * m_blue_in_red_band),
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(u8)(original.red() * m_red_in_green_band + original.green() * m_green_in_green_band + original.blue() * m_blue_in_green_band),
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(u8)(original.red() * m_red_in_blue_band + original.green() * m_green_in_blue_band + original.blue() * m_blue_in_blue_band),
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original.alpha());
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};
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}
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63
Userland/Libraries/LibGfx/Filters/ColorBlindnessFilter.h
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63
Userland/Libraries/LibGfx/Filters/ColorBlindnessFilter.h
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/*
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* Copyright (c) 2021, Antonio Di Stefano <tonio9681@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 "ColorFilter.h"
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#include <AK/NonnullOwnPtr.h>
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namespace Gfx {
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class ColorBlindnessFilter : public ColorFilter {
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public:
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ColorBlindnessFilter(
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double red_in_red_band,
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double green_in_red_band,
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double blue_in_red_band,
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double red_in_green_band,
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double green_in_green_band,
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double blue_in_green_band,
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double red_in_blue_band,
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double green_in_blue_band,
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double blue_in_blue_band)
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: m_red_in_red_band(red_in_red_band)
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, m_green_in_red_band(green_in_red_band)
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, m_blue_in_red_band(blue_in_red_band)
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, m_red_in_green_band(red_in_green_band)
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, m_green_in_green_band(green_in_green_band)
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, m_blue_in_green_band(blue_in_green_band)
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, m_red_in_blue_band(red_in_blue_band)
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, m_green_in_blue_band(green_in_blue_band)
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, m_blue_in_blue_band(blue_in_blue_band)
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{
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}
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virtual ~ColorBlindnessFilter() = default;
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virtual char const* class_name() const override { return "ColorBlindnessFilter"; }
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static NonnullOwnPtr<ColorBlindnessFilter> create_protanopia();
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static NonnullOwnPtr<ColorBlindnessFilter> create_protanomaly();
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static NonnullOwnPtr<ColorBlindnessFilter> create_deuteranopia();
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static NonnullOwnPtr<ColorBlindnessFilter> create_deuteranomaly();
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static NonnullOwnPtr<ColorBlindnessFilter> create_tritanopia();
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static NonnullOwnPtr<ColorBlindnessFilter> create_tritanomaly();
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static NonnullOwnPtr<ColorBlindnessFilter> create_achromatopsia();
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static NonnullOwnPtr<ColorBlindnessFilter> create_achromatomaly();
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protected:
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Color convert_color(Color original) override;
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private:
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double m_red_in_red_band;
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double m_green_in_red_band;
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double m_blue_in_red_band;
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double m_red_in_green_band;
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double m_green_in_green_band;
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double m_blue_in_green_band;
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double m_red_in_blue_band;
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double m_green_in_blue_band;
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double m_blue_in_blue_band;
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};
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}
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44
Userland/Libraries/LibGfx/Filters/ColorFilter.h
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Userland/Libraries/LibGfx/Filters/ColorFilter.h
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/*
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* Copyright (c) 2021, Antonio Di Stefano <tonio9681@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 "Filter.h"
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namespace Gfx {
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class ColorFilter : public Filter {
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public:
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virtual ~ColorFilter() = default;
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virtual void apply(Bitmap& target_bitmap, IntRect const& target_rect, Bitmap const& source_bitmap, IntRect const& source_rect) override
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{
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VERIFY(source_rect.size() == target_rect.size());
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VERIFY(target_bitmap.rect().contains(target_rect));
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VERIFY(source_bitmap.rect().contains(source_rect));
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for (auto y = 0; y < source_rect.height(); ++y) {
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ssize_t source_y = y + source_rect.y();
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ssize_t target_y = y + target_rect.y();
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for (auto x = 0; x < source_rect.width(); ++x) {
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ssize_t source_x = x + source_rect.x();
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ssize_t target_x = x + target_rect.x();
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auto source_pixel = source_bitmap.get_pixel(source_x, source_y);
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auto target_color = convert_color(source_pixel);
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target_bitmap.set_pixel(target_x, target_y, target_color);
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}
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}
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}
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protected:
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ColorFilter() = default;
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virtual Color convert_color(Color) = 0;
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};
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}
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