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Starfield: Use TRY() a lot more :^)

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pbrw 2021-11-25 02:57:04 +01:00 committed by Andreas Kling
parent 9e3bc3f930
commit bd61558ed8
Notes: sideshowbarker 2024-07-18 00:40:35 +09:00 
Author: https://github.com/pbrw
Commit: https://github.com/SerenityOS/serenity/commit/bd61558ed8e
Pull-request: https://github.com/SerenityOS/serenity/pull/11052
1 changed files with 13 additions and 12 deletions
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25
Userland/Demos/Starfield/Starfield.cpp
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@ -33,7 +33,7 @@ class Starfield final : public GUI::Widget {
C_OBJECT(Starfield)
public:
virtual ~Starfield() override;
void create_stars(int, int, int);
ErrorOr<void> create_stars(int, int, int);
void set_speed(unsigned speed) { m_speed = speed; }
@ -60,9 +60,9 @@ Starfield::Starfield(int interval)
start_timer(interval);
}
void Starfield::create_stars(int width, int height, int stars)
ErrorOr<void> Starfield::create_stars(int width, int height, int stars)
{
m_bitmap = Gfx::Bitmap::try_create(Gfx::BitmapFormat::BGRx8888, { width, height }).release_value_but_fixme_should_propagate_errors();
m_bitmap = TRY(Gfx::Bitmap::try_create(Gfx::BitmapFormat::BGRx8888, { width, height }));
m_stars.grow_capacity(stars);
for (int i = 0; i < stars; i++) {
@ -71,6 +71,7 @@ void Starfield::create_stars(int width, int height, int stars)
rand() % 1999 + 1 });
}
draw();
return {};
}
Starfield::~Starfield()
@ -162,12 +163,12 @@ ErrorOr<int> serenity_main(Main::Arguments arguments)
args_parser.add_option(speed, "Speed (default = 1)", "speed", 's', "number");
args_parser.parse(arguments);
auto app = GUI::Application::construct(arguments);
auto app = TRY(GUI::Application::try_create(arguments));
TRY(Core::System::pledge("stdio recvfd sendfd rpath", nullptr));
auto app_icon = GUI::Icon::default_icon("app-screensaver");
auto window = GUI::Window::construct();
auto window = TRY(GUI::Window::try_create());
window->set_double_buffering_enabled(true);
window->set_title("Starfield");
@ -177,15 +178,15 @@ ErrorOr<int> serenity_main(Main::Arguments arguments)
window->set_minimizable(false);
window->set_icon(app_icon.bitmap_for_size(16));
auto& starfield_window = window->set_main_widget<Starfield>(refresh_rate);
starfield_window.set_fill_with_background_color(false);
starfield_window.set_override_cursor(Gfx::StandardCursor::Hidden);
starfield_window.update();
auto starfield_window = TRY(window->try_set_main_widget<Starfield>(refresh_rate));
starfield_window->set_fill_with_background_color(false);
starfield_window->set_override_cursor(Gfx::StandardCursor::Hidden);
starfield_window->update();
window->show();
starfield_window.create_stars(window->width(), window->height(), star_count);
starfield_window.set_speed(speed);
starfield_window.update();
TRY(starfield_window->create_stars(window->width(), window->height(), star_count));
starfield_window->set_speed(speed);
starfield_window->update();
window->move_to_front();
window->set_cursor(Gfx::StandardCursor::Hidden);