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/*
* Copyright (c) 2020-2022, the SerenityOS developers.
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <LibCore/System.h>
#include <LibDesktop/Screensaver.h>
#include <LibGUI/Application.h>
#include <LibGUI/Event.h>
#include <LibGUI/Icon.h>
#include <LibGUI/Painter.h>
#include <LibGUI/Window.h>
#include <LibGfx/Bitmap.h>
#include <LibMain/Main.h>
#include <stdio.h>
#include <time.h>
#include <unistd.h>
class Gradient final : public Desktop::Screensaver {
C_OBJECT(Gradient)
public:
virtual ~Gradient() override = default;
private:
Gradient(int width = 64, int height = 48, int interval = 10000);
RefPtr<Gfx::Bitmap> m_bitmap;
void draw();
virtual void paint_event(GUI::PaintEvent&) override;
virtual void timer_event(Core::TimerEvent&) override;
};
Gradient::Gradient(int width, int height, int interval)
{
on_screensaver_exit = []() { GUI::Application::the()->quit(); };
m_bitmap = Gfx::Bitmap::create(Gfx::BitmapFormat::BGRx8888, { width, height }).release_value_but_fixme_should_propagate_errors();
srand(time(nullptr));
stop_timer();
start_timer(interval);
draw();
}
void Gradient::paint_event(GUI::PaintEvent& event)
{
GUI::Painter painter(*this);
painter.add_clip_rect(event.rect());
painter.draw_scaled_bitmap(rect(), *m_bitmap, m_bitmap->rect());
}
void Gradient::timer_event(Core::TimerEvent&)
{
draw();
update();
}
void Gradient::draw()
{
const Color colors[] {
Color::Blue,
Color::Cyan,
Color::Green,
Color::Magenta,
Color::Red,
Color::Yellow,
};
const Orientation orientations[] {
Gfx::Orientation::Horizontal,
Gfx::Orientation::Vertical
};
int start_color_index = 0;
int end_color_index = 0;
while (start_color_index == end_color_index) {
start_color_index = rand() % (sizeof(colors) / sizeof(colors[0]));
end_color_index = rand() % (sizeof(colors) / sizeof(colors[0]));
}
GUI::Painter painter(*m_bitmap);
painter.fill_rect_with_gradient(
orientations[rand() % (sizeof(orientations) / sizeof(orientations[0]))],
m_bitmap->rect(),
colors[start_color_index],
colors[end_color_index]);
}
ErrorOr<int> serenity_main(Main::Arguments arguments)
{
TRY(Core::System::pledge("stdio rpath recvfd sendfd unix"));
auto app = TRY(GUI::Application::create(arguments));
TRY(Core::System::pledge("stdio rpath recvfd sendfd"));
TRY(Core::System::unveil("/res", "r"));
TRY(Core::System::unveil(nullptr, nullptr));
auto window = TRY(Desktop::Screensaver::create_window("Gradient"sv, "app-gradient"sv));
auto gradient_widget = TRY(window->set_main_widget<Gradient>(64, 48, 10000));
gradient_widget->set_fill_with_background_color(false);
gradient_widget->set_override_cursor(Gfx::StandardCursor::Hidden);
gradient_widget->update();
window->show();
window->move_to_front();
window->set_cursor(Gfx::StandardCursor::Hidden);
window->update();
return app->exec();
}
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