RGBCube/serenity
1
Fork 0
mirror of https://github.com/RGBCube/serenity synced 2025-07-26 23:27:43 +00:00
Code Issues Activity Actions

ThemeEditor: Implement a way to simulate color blindness in preview

Browse source 
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.
This commit is contained in:
TheGrizzlyDev 2021-12-17 22:59:01 +00:00 • committed by Linus Groh
parent 1c05d39abc
commit ebaf211260
7 changed files with 289 additions and 0 deletions
Download patch file Download diff file Expand all files Collapse all files

26
Userland/Applications/ThemeEditor/PreviewWidget.cpp
View file

@ -1,6 +1,7 @@
/*
* Copyright (c) 2020, Andreas Kling <kling@serenityos.org>
* Copyright (c) 2021, Sam Atkins <atkinssj@serenityos.org>
* Copyright (c) 2021, Antonio Di Stefano <tonio9681@gmail.com>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
@ -20,6 +21,7 @@
#include <LibGUI/TextEditor.h>
#include <LibGfx/Bitmap.h>
#include <LibGfx/WindowTheme.h>
#include <WindowServer/Compositor.h>
namespace ThemeEditor {
@ -152,6 +154,12 @@ void PreviewWidget::set_theme_from_file(String const& path, int fd)
on_theme_load_from_file(path);
}
void PreviewWidget::set_color_filter(OwnPtr<Gfx::ColorBlindnessFilter> color_filter)
{
m_color_filter = move(color_filter);
repaint();
}
void PreviewWidget::paint_event(GUI::PaintEvent& event)
{
GUI::Frame::paint_event(event);
@ -219,6 +227,24 @@ void PreviewWidget::paint_event(GUI::PaintEvent& event)
paint_window("Active window", active_rect, Gfx::WindowTheme::WindowState::Active, *m_inactive_window_icon);
}
void PreviewWidget::second_paint_event(GUI::PaintEvent&)
{
if (!m_color_filter)
return;
GUI::Painter painter(*this);
auto target = painter.target();
auto bitmap_clone_or_error = target->clone();
if (bitmap_clone_or_error.is_error())
return;
auto clone = bitmap_clone_or_error.release_value();
auto rect = target->rect();
m_color_filter->apply(*target, rect, *clone, rect);
}
void PreviewWidget::resize_event(GUI::ResizeEvent&)
{
m_gallery->set_relative_rect(Gfx::IntRect(0, 0, 320, 240).centered_within(rect()).translated(0, 20));