cargo: Use gtk-rs master

Needed to take advantage of template callbacks
and new APIs.

src/application.rs

@@ -173,7 +173,7 @@ impl LpApplication {
         // Builders are a pattern that allow you to create
         // an object and set all relevant properties very
         // easily in a way that's idiomatic to Rust.
-        let dialog = gtk::AboutDialogBuilder::new()
+        let dialog = gtk::AboutDialog::builder()
             .authors(vec![String::from(
                 "Christopher Davis <christopherdavis@gnome.org>",
             )])

src/util.rs

@@ -17,7 +17,7 @@ pub fn get_file_display_name(file: &gio::File) -> Option<String> {
         .query_info(
             *gio::FILE_ATTRIBUTE_STANDARD_DISPLAY_NAME,
             gio::FileQueryInfoFlags::empty(),
-            gio::NONE_CANCELLABLE,
+            gio::Cancellable::NONE,
         )
         .ok()?;
 

src/widgets/image.rs

@@ -55,7 +55,7 @@ mod imp {
     impl ObjectImpl for LpImage {
         fn properties() -> &'static [glib::ParamSpec] {
             static PROPERTIES: Lazy<Vec<glib::ParamSpec>> = Lazy::new(|| {
-                vec![glib::ParamSpec::new_object(
+                vec![glib::ParamSpecObject::new(
                     "file",
                     "File",
                     "The current file",

src/widgets/image_view.rs

@@ -91,14 +91,14 @@ mod imp {
         fn properties() -> &'static [glib::ParamSpec] {
             static PROPERTIES: Lazy<Vec<glib::ParamSpec>> = Lazy::new(|| {
                 vec![
-                    glib::ParamSpec::new_string(
+                    glib::ParamSpecString::new(
                         "filename",
                         "Filename",
                         "The filename of the current file",
                         None,
                         glib::ParamFlags::READABLE,
                     ),
-                    glib::ParamSpec::new_object(
+                    glib::ParamSpecObject::new(
                         "controls",
                         "Controls",
                         "The controls for the image view",
@@ -188,7 +188,7 @@ impl LpImageView {
                             *gio::FILE_ATTRIBUTE_STANDARD_CONTENT_TYPE
                         ),
                         gio::FileQueryInfoFlags::NONE,
-                        gio::NONE_CANCELLABLE,
+                        gio::Cancellable::NONE,
                     )
                     .unwrap();
 
@@ -332,12 +332,7 @@ impl LpImageView {
     pub fn show_popover_at(&self, x: f64, y: f64) {
         let imp = imp::LpImageView::from_instance(&self);
 
-        let rect = gdk::Rectangle {
-            x: x as i32,
-            y: y as i32,
-            width: 0,
-            height: 0,
-        };
+        let rect = gdk::Rectangle::new(x as i32, y as i32, 0, 0);
 
         imp.popover.set_pointing_to(&rect);
         imp.popover.popup();

src/window.rs

@@ -201,9 +201,7 @@ impl LpWindow {
         chooser.set_transient_for(Some(self));
 
         let filter = gtk::FileFilter::new();
-        filter
-            .set_property("name", &String::from("Supported image files"))
-            .unwrap();
+        filter.set_property("name", &String::from("Supported image files"));
         filter.add_mime_type("image/*");
         chooser.add_filter(&filter);
 
@@ -290,8 +288,8 @@ impl LpWindow {
             .unwrap();
         let monitor_geometry = monitor.geometry();
 
-        let monitor_width = monitor_geometry.width;
-        let monitor_height = monitor_geometry.height;
+        let monitor_width = monitor_geometry.width();
+        let monitor_height = monitor_geometry.height();
 
         if img_width > monitor_width || img_height + header_height > monitor_height {
             let width_factor = (monitor_width as f32 * 0.85) / img_width as f32;