mirror of
https://github.com/RGBCube/serenity
synced 2025-10-31 21:02:44 +00:00
111 lines
3 KiB
C++
111 lines
3 KiB
C++
/*
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* Copyright (c) 2020-2022, the SerenityOS developers.
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include <LibCore/System.h>
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#include <LibDesktop/Screensaver.h>
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#include <LibGUI/Application.h>
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#include <LibGUI/Event.h>
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#include <LibGUI/Icon.h>
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#include <LibGUI/Painter.h>
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#include <LibGUI/Window.h>
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#include <LibGfx/Bitmap.h>
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#include <LibMain/Main.h>
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#include <stdio.h>
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#include <time.h>
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#include <unistd.h>
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class Gradient final : public Desktop::Screensaver {
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C_OBJECT(Gradient)
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public:
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virtual ~Gradient() override = default;
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private:
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Gradient(int width = 64, int height = 48, int interval = 10000);
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RefPtr<Gfx::Bitmap> m_bitmap;
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void draw();
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virtual void paint_event(GUI::PaintEvent&) override;
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virtual void timer_event(Core::TimerEvent&) override;
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};
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Gradient::Gradient(int width, int height, int interval)
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{
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on_screensaver_exit = []() { GUI::Application::the()->quit(); };
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m_bitmap = Gfx::Bitmap::create(Gfx::BitmapFormat::BGRx8888, { width, height }).release_value_but_fixme_should_propagate_errors();
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srand(time(nullptr));
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stop_timer();
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start_timer(interval);
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draw();
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}
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void Gradient::paint_event(GUI::PaintEvent& event)
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{
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GUI::Painter painter(*this);
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painter.add_clip_rect(event.rect());
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painter.draw_scaled_bitmap(rect(), *m_bitmap, m_bitmap->rect());
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}
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void Gradient::timer_event(Core::TimerEvent&)
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{
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draw();
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update();
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}
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void Gradient::draw()
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{
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const Color colors[] {
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Color::Blue,
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Color::Cyan,
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Color::Green,
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Color::Magenta,
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Color::Red,
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Color::Yellow,
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};
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const Orientation orientations[] {
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Gfx::Orientation::Horizontal,
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Gfx::Orientation::Vertical
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};
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int start_color_index = 0;
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int end_color_index = 0;
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while (start_color_index == end_color_index) {
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start_color_index = rand() % (sizeof(colors) / sizeof(colors[0]));
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end_color_index = rand() % (sizeof(colors) / sizeof(colors[0]));
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}
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GUI::Painter painter(*m_bitmap);
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painter.fill_rect_with_gradient(
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orientations[rand() % (sizeof(orientations) / sizeof(orientations[0]))],
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m_bitmap->rect(),
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colors[start_color_index],
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colors[end_color_index]);
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}
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ErrorOr<int> serenity_main(Main::Arguments arguments)
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{
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TRY(Core::System::pledge("stdio rpath recvfd sendfd unix"));
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auto app = TRY(GUI::Application::try_create(arguments));
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TRY(Core::System::pledge("stdio rpath recvfd sendfd"));
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TRY(Core::System::unveil("/res", "r"));
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TRY(Core::System::unveil(nullptr, nullptr));
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auto window = TRY(Desktop::Screensaver::create_window("Gradient"sv, "app-gradient"sv));
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auto gradient_widget = TRY(window->set_main_widget<Gradient>(64, 48, 10000));
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gradient_widget->set_fill_with_background_color(false);
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gradient_widget->set_override_cursor(Gfx::StandardCursor::Hidden);
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gradient_widget->update();
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window->show();
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window->move_to_front();
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window->set_cursor(Gfx::StandardCursor::Hidden);
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window->update();
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return app->exec();
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}
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