i18n: mark some files as translatable

po/POTFILES.in

@@ -5,3 +5,6 @@ data/resources/ui/about_dialog.ui.in
 data/resources/ui/menu.ui
 data/resources/ui/shortcuts.ui
 data/resources/ui/window.ui.in
+src/contrast_level.rs
+src/contrast_preview.rs
+src/window.rs

src/application.rs

@@ -88,7 +88,6 @@ impl Application {
             about_dialog.show();
         });
         self.app.add_action(&simple_action);
-        self.app.set_accels_for_action("app.about", &["<primary>comma"]);
     }
 
     pub fn setup_signals(&self) {

src/colour_entry.rs

@@ -27,6 +27,7 @@ impl ColourEntry {
         self.widget.set_valign(gtk::Align::Center);
         self.widget.get_style_context().add_class("linked");
         self.widget.set_hexpand(true);
+        self.widget.set_tooltip_text(Some(&label));
 
         self.entry.set_placeholder_text(Some(label.as_str()));
         self.entry.set_halign(gtk::Align::Center);

src/contrast_level.rs

 use crate::glib::Cast;
 use crate::gtk::{BoxExt, ContainerExt, LabelExt, OverlayExt, StyleContextExt, WidgetExt};
+use gettextrs::gettext;
 use libhandy::{Column, ColumnExt};
 use std::{cell::RefCell, rc::Rc};
 
@@ -96,7 +97,7 @@ impl ChartBarWidget {
         column.show();
 
         let weak_instance = Rc::downgrade(&s).clone();
-        container.connect_size_allocate(move |_, allocation| {
+        container.connect_size_allocate(move |_, _| {
             if let Some(instance) = weak_instance.upgrade() {
                 instance.borrow().reallocate();
             }
@@ -184,7 +185,7 @@ impl ContrastLevelBar {
 
     pub fn set_contrast_level(&mut self, contrast_level: f64) {
         self.chartbar.borrow_mut().set_value(contrast_level);
-        let level_label = format!("{:.1} out of 21", contrast_level);
+        let level_label = gettext(format!("{:.1} out of 21", contrast_level));
         self.level_label.set_text(&level_label);
     }
 }

src/contrast_preview.rs

 use crate::gtk::{BoxExt, LabelExt, StyleContextExt, WidgetExt};
+use gettextrs::gettext;
 
 pub struct ContrastPreview {
     pub widget: gtk::Box,
@@ -41,17 +42,17 @@ impl ContrastPreview {
 
     pub fn set_contrast_level(&self, contrast_level: f64) {
         if 0.0 <= contrast_level && contrast_level < 3.0 {
-            self.head_label.set_text("Nope");
-            self.comment_label.set_text("This color combination doesn't have enough contrast to be legible.");
+            self.head_label.set_text(&gettext("Nope"));
+            self.comment_label.set_text(&gettext("This color combination doesn't have enough contrast to be legible."));
         } else if 3.0 <= contrast_level && contrast_level < 4.5 {
-            self.head_label.set_text("Not bad");
-            self.comment_label.set_text("This color combination can work, but only at large text sizes.");
+            self.head_label.set_text(&gettext("Not bad"));
+            self.comment_label.set_text(&gettext("This color combination can work, but only at large text sizes."));
         } else if 4.5 <= contrast_level && contrast_level < 7.0 {
-            self.head_label.set_text("Pretty good");
-            self.comment_label.set_text("This color combination should work ok in most cases.");
+            self.head_label.set_text(&gettext("Pretty good"));
+            self.comment_label.set_text(&gettext("This color combination should work ok in most cases."));
         } else if 7.0 <= contrast_level && contrast_level <= 21.0 {
-            self.head_label.set_text("Awesome");
-            self.comment_label.set_text("This color combination has great contrast.");
+            self.head_label.set_text(&gettext("Awesome"));
+            self.comment_label.set_text(&gettext("This color combination has great contrast."));
         }
     }
 }

src/window.rs

@@ -4,8 +4,8 @@ use crate::config::{APP_ID, PROFILE};
 use crate::contrast_level::ContrastLevelBar;
 use crate::contrast_preview::ContrastPreview;
 use crate::libhandy::HeaderBarExt;
-
 use crate::window_state::WindowState;
+use gettextrs::gettext;
 use glib::ObjectExt;
 use gtk::prelude::{BoxExt, BuilderExtManual, ButtonExt, ContainerExt, EditableSignals, MenuButtonExt, StyleContextExt, WidgetExt};
 use gtk::Inhibit;
@@ -33,8 +33,8 @@ impl Window {
         let headerbar: libhandy::HeaderBar = builder.get_object("headerbar").unwrap();
         let appmenu_button: gtk::MenuButton = builder.get_object("appmenu_button").unwrap();
 
-        let bg_entry = ColourEntry::new("Background Colour".to_string());
-        let fg_entry = ColourEntry::new("Foreground Colour".to_string());
+        let bg_entry = ColourEntry::new(gettext("Background Colour"));
+        let fg_entry = ColourEntry::new(gettext("Foreground Colour"));
 
         let reverse_btn = gtk::Button::new();