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Starting to make a workable GUI app

Getty Ritter 1 year ago
commit
835bae1855
4 changed files with 930 additions and 0 deletions
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  2. 778 0
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  3. 24 0
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  4. 127 0
      src/main.rs

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+ "unicode-xid",
+]
+
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+ "proc-macro2",
+]
+
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+
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+ "heck",
+ "proc-macro2",
+ "quote",
+ "syn",
+]
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+ "proc-macro2",
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+ "proc-macro2",
+ "quote",
+ "syn",
+ "unicode-xid",
+]
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+ "heck",
+ "pkg-config",
+ "strum",
+ "strum_macros",
+ "thiserror",
+ "toml",
+ "version-compare",
+]
+
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+ "thiserror-impl",
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+ "proc-macro2",
+ "quote",
+ "syn",
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+ "serde",
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+
+[[package]]
+name = "version-compare"
+version = "0.0.10"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d63556a25bae6ea31b52e640d7c41d1ab27faba4ccb600013837a3d0b3994ca1"
+
+[[package]]
+name = "version_check"
+version = "0.9.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b5a972e5669d67ba988ce3dc826706fb0a8b01471c088cb0b6110b805cc36aed"

+ 24 - 0
Cargo.toml

@@ -0,0 +1,24 @@
+[package]
+name = "i-am-legend"
+version = "0.1.0"
+authors = ["Getty Ritter <gettylefou@gmail.com>"]
+edition = "2018"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
+failure = "*"
+pango = "*"
+pangocairo = "*"
+
+[dependencies.cairo-rs]
+version = "*"
+features = ["svg"]
+
+[dependencies.gtk]
+version = "0.9.0"
+features = ["v3_16"]
+
+[dependencies.gio]
+version = ""
+features = ["v2_44"]

+ 127 - 0
src/main.rs

@@ -0,0 +1,127 @@
+use gtk::{
+    Application,
+    ApplicationWindow,
+    Button,
+    GtkWindowExt,
+    WidgetExt,
+    ContainerExt,
+    ButtonExt,
+    BoxExt,
+};
+use gio::prelude::{
+    ApplicationExt,
+    ApplicationExtManual,
+};
+use std::rc::Rc;
+use std::cell::RefCell;
+
+
+struct Legend {
+    symbol: char,
+    color: (f64, f64, f64),
+}
+
+impl Legend {
+    fn draw_to_file(&self) {
+        let f = std::fs::File::create("samp.svg").unwrap();
+        let surf = cairo::SvgSurface::for_stream(
+            100.0,
+            100.0,
+            f,
+        ).unwrap();
+        self.render(&cairo::Context::new(&surf));
+        surf.finish_output_stream().unwrap();
+    }
+
+    fn render(&self, ctx: &cairo::Context) -> () {
+        ctx.set_source_rgb(self.color.0, self.color.1, self.color.2);
+        ctx.paint();
+
+        ctx.set_source_rgb(0., 0., 0.);
+
+        ctx.move_to(0.0, -23.0);
+        let layout = pangocairo::functions::create_layout(&ctx).unwrap();
+        layout.set_width(100 * 1024);
+        layout.set_alignment(pango::Alignment::Center);
+        let font = pango::FontDescription::from_string("Fira Sans 92");
+        layout.set_font_description(Some(&font));
+
+        layout.set_text(&self.symbol.to_string());
+        pangocairo::functions::show_layout(&ctx, &layout);
+    }
+}
+
+struct AppData {
+    legend: Legend,
+}
+
+#[derive(Clone)]
+struct App {
+    data: Rc<RefCell<AppData>>,
+}
+
+impl App {
+    fn new() -> App {
+        let legend = Legend {
+            symbol: 'X',
+            color: (0.5, 0.5, 0.5),
+        };
+        let data = Rc::new(RefCell::new(AppData { legend }));
+        App { data }
+    }
+}
+
+fn mk_app(app: &gtk::Application) {
+    let window = ApplicationWindow::new(app);
+
+    let app = App::new();
+
+    window.set_title("I Am Legend");
+    let container = gtk::Box::new(gtk::Orientation::Vertical, 4);
+    container.pack_start(&mk_icon_choice('A', app.clone()), false, true, 0);
+    container.pack_start(&mk_icon_choice('B', app.clone()), false, true, 0);
+    container.pack_start(&mk_icon_choice('C', app.clone()), false, true, 0);
+    container.pack_start(&mk_icon_choice('D', app.clone()), false, true, 0);
+
+    let flow = gtk::Box::new(gtk::Orientation::Horizontal, 2);
+    flow.pack_start(&container, false, true, 0);
+    let button = Button::with_label("Click me!");
+    flow.pack_start(&button, false, true, 0);
+
+    let canvas = gtk::DrawingArea::new();
+    let copy = app.clone();
+    canvas.connect_draw(move |cv, ctx| {
+        copy.data.borrow_mut().legend.render(ctx);
+        gtk::Inhibit(false)
+    });
+    flow.pack_start(&canvas, true, true, 0);
+
+    button.connect_clicked(move |_| {
+        app.data.borrow_mut().legend.draw_to_file();
+    });
+
+    window.add(&flow);
+    window.show_all();
+}
+
+fn mk_icon_choice(choice: char, cell: App) -> gtk::Button {
+    let button = gtk::Button::with_label(&choice.to_string());
+    button.connect_clicked(move |_| {
+        cell.data.borrow_mut().legend.symbol = choice;
+        println!("Choosing '{}'", choice);
+    });
+    button
+}
+
+fn main() {
+    let application = Application::new(
+        Some("com.github.gtk-rs.examples.basic"),
+        Default::default(),
+    ).expect("failed to initialize GTK application");
+
+    application.connect_activate(|app| {
+        mk_app(app);
+    });
+
+    application.run(&[]);
+}