2 releases
0.1.1 | Apr 21, 2023 |
---|---|
0.1.0 | Apr 21, 2023 |
#183 in #gtk
21 downloads per month
5KB
gtk_widget_macro
A derive macro helps you handle Gtk widgets.
How it works
gtk_widget_macro
exports a derive macro named GtkWidget
.
When GtkWidget
is added to a struct, it defines a Struct::from_builder(>k::Builder) -> Struct
function to that struct.
When this function is called, it collects all the fields of the struct and uses each field's name as a sole parameter passed to gtk::Builder.object(glib::gstring::IntoGStr)
.
The retrieved object will be assigned to the corresponding field.
If the object with the given name is not found, the process panics.
Besides, a new method named exactly the field's name will be added to the struct.
This method will return a reference of that object.
This macro is Gtk-version agnostic. You can use it with whatever Gtk version you like. Report a bug if there are some versions do not work well.
Exmaple
use gtk::{prelude::*, Application, ApplicationWindow, Builder, Button};
// Imports the macro.
use gtk_widget_macro::GtkWidget;
// Adds the macro to the struct.
#[derive(GtkWidget)]
struct Widgets {
button_example: Button,
window: ApplicationWindow,
}
fn build_ui(app: &Application) {
let builder = Builder::from_string(include_str!("main.ui"));
// Calls `from_builder` to construct the struct.
let widgets = Widgets::from_builder(builder);
// Retrieves the gtk::Button with object id `button_example`.
let button_example = widgets.button_example();
button_example.connect_clicked(|_| {
println!("Button clicked.");
});
// Retrieves the gtk::ApplicationWindow with object id `window`.
let window = widgets.window();
window.set_application(Some(app));
window.present(); // Needs to be changed to `show_all` if Gtk3 is used.
}
fn main() {
let app = Application::builder().application_id("org.example.Example").build();
app.connect_activate(build_ui);
app.run();
}
Dependencies
~240–680KB
~16K SLoC