theming documentation

Cargo.toml

@@ -12,6 +12,4 @@ gtk = "0.8.1"
 lightdm = { git = "https://raatty.club:3000/raatty/lightdm-rs.git"}
 
 [profile.release]
-codegen-units = 1
 panic = "abort"
-opt-level = "z"

Makefile

@@ -3,7 +3,9 @@ BINDIR ?= $(PREFIX)/bin
 DATADIR ?= $(PREFIX)/share
 CONFDIR = /etc
 
-install:
-	RUSTFLAGS="-C link-arg=-s" cargo build --release
+target/release/lightdm-mobile-greeter: src/main.rs
+	cargo build --release
+build: target/release/lightdm-mobile-greeter
+install: build
 	install -Dm755 target/release/lightdm-mobile-greeter -t $(DESTDIR)$(BINDIR)
 	install -Dm644 lightdm-mobile-greeter.desktop -t $(DESTDIR)$(DATADIR)/xgreeters

README.md

@@ -14,3 +14,6 @@ lightdm.conf
 greeter-session=lightdm-mobile-greeter
 user-session=<THE CHOSEN DE TO LAUNCH AFTER SUCCESSFUL LOGIN>
 ```
+
+## Theming
+If you have a file at `/etc/lightdm/lightdm_mobile_greeter.css` styling will be read from it falling back to the backed in styling, checkout style.css to get ideas on what to change

interface.ui

@@ -77,7 +77,10 @@
                 <child>
                   <object class="GtkLabel" id="message_label">
                       <property name="visible">True</property>
-                      <property name="label"></property>
+		      <property name="label"></property>
+		      <style>
+	                <class name="msg"/>
+		      </style>
                   </object>
                 </child>
               </object>

src/main.rs

@@ -5,7 +5,10 @@ use libhandy;
 use lightdm;
 use lightdm::{GreeterExt, SessionExt, UserExt, UserListExt};
 use std::cell::RefCell;
+use std::io::prelude::*;
+use std::path::*;
 use std::rc::Rc;
+use std::{fs, io};
 
 fn main() {
     if gtk::init().is_err() {
@@ -22,6 +25,22 @@ fn main() {
         handler_borrowed.setup_greeter(handler.clone());
         handler_borrowed.setup_de_select(handler.clone());
     }
+    {
+        let handler_borrowed = handler.borrow();
+        if let Ok(os_str) = pretty_name() {
+            handler_borrowed
+                .msg_label
+                .as_ref()
+                .expect("no msg label")
+                .set_text(&os_str);
+        }
+    }
+    {
+        let handler_borrowed = handler.borrow();
+        let greeter = handler_borrowed.greeter.as_ref().expect("no greeter");
+        let user = handler_borrowed.user.as_ref().expect("no user");
+        greeter.authenticate(Some(&user)).ok();
+    }
     let handler_builder_clone = handler.clone();
     builder.connect_signals(move |_, name| {
         let h_login_cb_clone = handler_builder_clone.clone();
@@ -80,14 +99,27 @@ fn main() {
             (screen_size.height as f32 * 0.8) as i32,
         );
         let style = gtk::CssProvider::new();
+        let screen = gdk::Screen::get_default().expect("cant get screen");
         style
             .load_from_data(include_bytes!("../style.css"))
             .expect("failed to load style");
         gtk::StyleContext::add_provider_for_screen(
-            &gdk::Screen::get_default().expect("cant get screen"),
+            &screen,
             &style,
             gtk::STYLE_PROVIDER_PRIORITY_APPLICATION,
         );
+        let custom_conf = Path::new("/etc/lightdm/lightdm_mobile_greeter.css");
+        if custom_conf.exists() {
+            let style2 = gtk::CssProvider::new();
+            if let Some(path) = custom_conf.to_str() {
+                style2.load_from_path(path).expect("failed to load style2");
+            }
+            gtk::StyleContext::add_provider_for_screen(
+                &screen,
+                &style2,
+                gtk::STYLE_PROVIDER_PRIORITY_USER,
+            )
+        }
     }
     window.show();
     gtk::main();
@@ -142,7 +174,7 @@ impl Handler {
         let handler_msg_clone = handler.clone();
         greeter.connect_show_message(move |_, msg, _| {
             handler_msg_clone
-                .borrow_mut()
+                .borrow()
                 .msg_label
                 .as_ref()
                 .expect("no msg label")
@@ -151,29 +183,26 @@ impl Handler {
         let handler_prmpt_clone = handler.clone();
         greeter.connect_show_prompt(move |_, msg, _| {
             handler_prmpt_clone
-                .borrow_mut()
+                .borrow()
                 .pmpt_label
                 .as_ref()
                 .expect("no msg label")
                 .set_text(msg);
         });
         greeter.connect_to_daemon_sync().ok();
-        greeter.authenticate(Some(&self.user.clone().unwrap())).ok();
         self.greeter = Some(greeter);
     }
 
-    fn setup_de_select(&self, handler: Rc<RefCell<Self>>) {
+    fn setup_de_select(&mut self, handler: Rc<RefCell<Self>>) {
         {
-            let mut handler_borrowed = handler.borrow_mut();
-            let session = handler_borrowed
+            let session = self
                 .greeter
                 .as_ref()
                 .expect("wheres the greeter at")
                 .get_default_session_hint()
                 .expect("no default session");
-            handler_borrowed.session = Some(String::from(session));
+            self.session = Some(String::from(session));
         }
-        let first_handler = handler.clone();
         let vbox = gtk::BoxBuilder::new()
             .orientation(gtk::Orientation::Vertical)
             .visible(true)
@@ -187,23 +216,47 @@ impl Handler {
         });
         let (name, key) = sessions.next().expect("no session");
         let first = gtk::RadioButtonBuilder::new().label(&name).build();
-        first.connect_toggled(move |_| {
-            first_handler.borrow_mut().session = Some(key.clone());
-        });
+        let mut keys = Vec::new();
+        let mut rbs = Vec::new();
+        keys.push(key);
+        rbs.push(first.clone());
         vbox.add(&first);
         for (name, key) in sessions {
-            let handler_clone = handler.clone();
             let key_clone = key.clone();
             let rb = gtk::RadioButton::new_with_label_from_widget(&first, &name);
-            rb.connect_toggled(move |_| {
-                handler_clone.borrow_mut().session = Some(key.clone());
-            });
+            keys.push(key);
+            rbs.push(rb.clone());
             vbox.add(&rb);
             if self.session.clone().expect("session not found") == key_clone {
                 rb.set_active(true);
             }
         }
+        let keys_iter = keys.iter();
+        for (rb, key) in rbs.iter().zip(keys_iter) {
+            let handler_clone = handler.clone();
+            let key_clone = key.clone();
+            rb.connect_toggled(move |_| {
+                handler_clone.borrow_mut().session = Some(key_clone.clone());
+            });
+        }
         self.de_select.as_ref().expect("no de select").add(&vbox);
         vbox.show_all()
     }
 }
+
+fn pretty_name() -> Result<String, io::Error> {
+    let file = fs::File::open("/etc/os-release")?;
+    let contents = io::BufReader::new(file);
+    for line_opt in contents.lines() {
+        let line = line_opt?;
+        if line.starts_with("PRETTY_NAME=") {
+            if let Some(name) = line.split("=").skip(1).next() {
+                return Ok(name.trim_matches('"').to_string());
+            };
+        }
+    }
+    Err(io::Error::new(
+        io::ErrorKind::NotFound,
+        "I tried my best :)",
+    ))
+}

style.css

@@ -51,3 +51,8 @@ popover {
 popover radiobutton {
     padding: 1em;
 }
+
+.msg {
+    font-size: 1.5em;
+    padding: 1em;
+}