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Magnifier: Add colorblind preview options

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Add the same preview options as the theme editor so you can test the
accessibility of anything on your desktop. Both tools share the same
shortcuts.
This commit is contained in:
TheGrizzlyDev 2021-12-28 20:42:01 +00:00 committed by Linus Groh
parent 7f61d430e6
commit 2905642550
Notes: sideshowbarker 2024-07-17 22:02:01 +09:00 
Author: https://github.com/TheGrizzlyDev
Commit: https://github.com/SerenityOS/serenity/commit/2905642550c
Pull-request: https://github.com/SerenityOS/serenity/pull/11470
Reviewed-by: https://github.com/linusg ✅
4 changed files with 91 additions and 1 deletions
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2
Userland/Applications/Magnifier/CMakeLists.txt
View File

@ -11,4 +11,4 @@ set(SOURCES
)
serenity_app(Magnifier ICON app-magnifier)
target_link_libraries(Magnifier LibGUI LibMain)
target_link_libraries(Magnifier LibGfx LibGUI LibMain)

24
Userland/Applications/Magnifier/MagnifierWidget.cpp
View File

@ -27,6 +27,12 @@ void MagnifierWidget::set_scale_factor(int scale_factor)
update();
}
void MagnifierWidget::set_color_filter(OwnPtr<Gfx::ColorBlindnessFilter> color_filter)
{
m_color_filter = move(color_filter);
sync();
}
void MagnifierWidget::display_previous_frame()
{
--m_frame_offset_from_head;
@ -64,3 +70,21 @@ void MagnifierWidget::paint_event(GUI::PaintEvent& event)
if (m_grabbed_bitmap)
painter.draw_scaled_bitmap(frame_inner_rect(), *m_grabbed_bitmap, m_grabbed_bitmap->rect());
}
void MagnifierWidget::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);
}

4
Userland/Applications/Magnifier/MagnifierWidget.h
View File

@ -8,6 +8,7 @@
#include <AK/CircularQueue.h>
#include <LibGUI/Frame.h>
#include <LibGfx/Filters/ColorBlindnessFilter.h>
class MagnifierWidget final : public GUI::Frame {
C_OBJECT(MagnifierWidget);
@ -15,6 +16,7 @@ class MagnifierWidget final : public GUI::Frame {
public:
virtual ~MagnifierWidget();
void set_scale_factor(int scale_factor);
void set_color_filter(OwnPtr<Gfx::ColorBlindnessFilter>);
void pause_capture(bool pause)
{
m_pause_capture = pause;
@ -28,10 +30,12 @@ private:
MagnifierWidget();
virtual void paint_event(GUI::PaintEvent&) override;
virtual void second_paint_event(GUI::PaintEvent&) override;
void sync();
int m_scale_factor { 2 };
OwnPtr<Gfx::ColorBlindnessFilter> m_color_filter;
RefPtr<Gfx::Bitmap> m_grabbed_bitmap;
CircularQueue<RefPtr<Gfx::Bitmap>, 512> m_grabbed_bitmaps {};
ssize_t m_frame_offset_from_head { 0 };

62
Userland/Applications/Magnifier/main.cpp
View File

@ -12,6 +12,7 @@
#include <LibGUI/Menu.h>
#include <LibGUI/Menubar.h>
#include <LibGUI/Window.h>
#include <LibGfx/Filters/ColorBlindnessFilter.h>
#include <LibMain/Main.h>
ErrorOr<int> serenity_main(Main::Arguments arguments)
@ -91,6 +92,67 @@ ErrorOr<int> serenity_main(Main::Arguments arguments)
TRY(timeline_menu->try_add_action(previous_frame_action));
TRY(timeline_menu->try_add_action(next_frame_action));
auto accessibility_menu = TRY(window->try_add_menu("&Accessibility"));
auto default_accessibility_action = GUI::Action::create_checkable("Default - non-impaired", { Mod_AltGr, Key_1 }, [&](auto&) {
magnifier->set_color_filter(nullptr);
});
default_accessibility_action->set_checked(true);
auto pratanopia_accessibility_action = GUI::Action::create_checkable("Protanopia", { Mod_AltGr, Key_2 }, [&](auto&) {
magnifier->set_color_filter(Gfx::ColorBlindnessFilter::create_protanopia());
});
auto pratanomaly_accessibility_action = GUI::Action::create_checkable("Protanomaly", { Mod_AltGr, Key_3 }, [&](auto&) {
magnifier->set_color_filter(Gfx::ColorBlindnessFilter::create_protanomaly());
});
auto tritanopia_accessibility_action = GUI::Action::create_checkable("Tritanopia", { Mod_AltGr, Key_4 }, [&](auto&) {
magnifier->set_color_filter(Gfx::ColorBlindnessFilter::create_tritanopia());
});
auto tritanomaly_accessibility_action = GUI::Action::create_checkable("Tritanomaly", { Mod_AltGr, Key_5 }, [&](auto&) {
magnifier->set_color_filter(Gfx::ColorBlindnessFilter::create_tritanomaly());
});
auto deuteranopia_accessibility_action = GUI::Action::create_checkable("Deuteranopia", { Mod_AltGr, Key_6 }, [&](auto&) {
magnifier->set_color_filter(Gfx::ColorBlindnessFilter::create_deuteranopia());
});
auto deuteranomaly_accessibility_action = GUI::Action::create_checkable("Deuteranomaly", { Mod_AltGr, Key_7 }, [&](auto&) {
magnifier->set_color_filter(Gfx::ColorBlindnessFilter::create_deuteranomaly());
});
auto achromatopsia_accessibility_action = GUI::Action::create_checkable("Achromatopsia", { Mod_AltGr, Key_8 }, [&](auto&) {
magnifier->set_color_filter(Gfx::ColorBlindnessFilter::create_achromatopsia());
});
auto achromatomaly_accessibility_action = GUI::Action::create_checkable("Achromatomaly", { Mod_AltGr, Key_9 }, [&](auto&) {
magnifier->set_color_filter(Gfx::ColorBlindnessFilter::create_achromatomaly());
});
auto preview_type_action_group = make<GUI::ActionGroup>();
preview_type_action_group->set_exclusive(true);
preview_type_action_group->add_action(*default_accessibility_action);
preview_type_action_group->add_action(*pratanopia_accessibility_action);
preview_type_action_group->add_action(*pratanomaly_accessibility_action);
preview_type_action_group->add_action(*tritanopia_accessibility_action);
preview_type_action_group->add_action(*tritanomaly_accessibility_action);
preview_type_action_group->add_action(*deuteranopia_accessibility_action);
preview_type_action_group->add_action(*deuteranomaly_accessibility_action);
preview_type_action_group->add_action(*achromatopsia_accessibility_action);
preview_type_action_group->add_action(*achromatomaly_accessibility_action);
TRY(accessibility_menu->try_add_action(default_accessibility_action));
TRY(accessibility_menu->try_add_action(pratanopia_accessibility_action));
TRY(accessibility_menu->try_add_action(pratanomaly_accessibility_action));
TRY(accessibility_menu->try_add_action(tritanopia_accessibility_action));
TRY(accessibility_menu->try_add_action(tritanomaly_accessibility_action));
TRY(accessibility_menu->try_add_action(deuteranopia_accessibility_action));
TRY(accessibility_menu->try_add_action(deuteranomaly_accessibility_action));
TRY(accessibility_menu->try_add_action(achromatopsia_accessibility_action));
TRY(accessibility_menu->try_add_action(achromatomaly_accessibility_action));
auto help_menu = TRY(window->try_add_menu("&Help"));
help_menu->add_action(GUI::CommonActions::make_about_action("Magnifier", app_icon, window));