application: Shortcuts for non-animated next/prev

Don't animate switching between images for Alt+Arrow.

Closes #45

src/application.rs

@@ -163,6 +163,8 @@ impl LpApplication {
 
         self.set_accels_for_action("win.image-left", &["Left", "Page_Down"]);
         self.set_accels_for_action("win.image-right", &["Right", "Page_Up"]);
+        self.set_accels_for_action("win.image-left-instant", &["<Alt>Left"]);
+        self.set_accels_for_action("win.image-right-instant", &["<Alt>Right"]);
         self.set_accels_for_action("win.first", &["Home"]);
         self.set_accels_for_action("win.last", &["End"]);
 

src/widgets/image_view.rs

@@ -354,7 +354,7 @@ impl LpImageView {
     }
 
     /// Move forward or backwards
-    pub fn navigate(&self, direction: Direction) {
+    pub fn navigate(&self, direction: Direction, animated: bool) {
         if let Some(current_file) = self.current_file() {
             let new_file = match direction {
                 Direction::Forward => self.model().after(&current_file),
@@ -362,7 +362,7 @@ impl LpImageView {
             };
 
             if let Some(new_file) = new_file {
-                self.scroll_sliding_view(&new_file);
+                self.scroll_sliding_view(&new_file, animated);
             }
         }
     }
@@ -452,7 +452,7 @@ impl LpImageView {
         self.notify("is-next-available");
     }
 
-    fn scroll_sliding_view(&self, file: &gio::File) {
+    fn scroll_sliding_view(&self, file: &gio::File, animated: bool) {
         let Some(current_page) = self.sliding_view().pages().swap_remove(&file.uri()) else {
             log::error!(
                 "Current path not available in sliding_view for scrolling: {}",
@@ -461,7 +461,11 @@ impl LpImageView {
             return;
         };
 
-        self.sliding_view().animate_to(&current_page);
+        if animated {
+            self.sliding_view().animate_to(&current_page);
+        } else {
+            self.sliding_view().instant_to(&current_page);
+        }
     }
 
     fn sliding_view(&self) -> LpSlidingView {
@@ -531,7 +535,7 @@ impl LpImageView {
             if self.model().contains(&trash_restore) {
                 self.set_trash_restore(gio::File::NONE);
                 self.update_sliding_view(&trash_restore);
-                self.scroll_sliding_view(&trash_restore);
+                self.scroll_sliding_view(&trash_restore, true);
                 return;
             }
         }

src/widgets/sliding_view.rs

@@ -554,6 +554,16 @@ impl LpSlidingView {
             .cloned()
     }
 
+    /// Move to specified page without animation
+    pub fn instant_to(&self, page: &LpImagePage) {
+        if let Some(index) = self.index_of(page) {
+            self.set_current_page(Some(page));
+            self.set_position(index as f64 - self.position_shift());
+        } else {
+            log::error!("Page not in LpSlidingView {}", page.file().uri());
+        }
+    }
+
     /// Move to specified page with animation
     pub fn animate_to(&self, page: &LpImagePage) {
         if let Some(index) = self.index_of(page) {

src/window.rs

@@ -146,26 +146,42 @@ mod imp {
             });
 
             klass.install_action("win.next", None, move |win, _, _| {
-                win.imp().image_view.navigate(Direction::Forward);
+                win.imp().image_view.navigate(Direction::Forward, true);
             });
 
             klass.install_action("win.previous", None, move |win, _, _| {
-                win.imp().image_view.navigate(Direction::Back);
+                win.imp().image_view.navigate(Direction::Back, true);
             });
 
             klass.install_action("win.image-right", None, move |win, _, _| {
                 if win.direction() == gtk::TextDirection::Rtl {
-                    win.imp().image_view.navigate(Direction::Back);
+                    win.imp().image_view.navigate(Direction::Back, true);
                 } else {
-                    win.imp().image_view.navigate(Direction::Forward);
+                    win.imp().image_view.navigate(Direction::Forward, true);
+                }
+            });
+
+            klass.install_action("win.image-right-instant", None, move |win, _, _| {
+                if win.direction() == gtk::TextDirection::Rtl {
+                    win.imp().image_view.navigate(Direction::Back, false);
+                } else {
+                    win.imp().image_view.navigate(Direction::Forward, false);
                 }
             });
 
             klass.install_action("win.image-left", None, move |win, _, _| {
                 if win.direction() == gtk::TextDirection::Rtl {
-                    win.imp().image_view.navigate(Direction::Forward);
+                    win.imp().image_view.navigate(Direction::Forward, true);
                 } else {
-                    win.imp().image_view.navigate(Direction::Back);
+                    win.imp().image_view.navigate(Direction::Back, true);
+                }
+            });
+
+            klass.install_action("win.image-left-instant", None, move |win, _, _| {
+                if win.direction() == gtk::TextDirection::Rtl {
+                    win.imp().image_view.navigate(Direction::Forward, false);
+                } else {
+                    win.imp().image_view.navigate(Direction::Back, false);
                 }
             });
 
@@ -279,11 +295,11 @@ mod imp {
 
             self.forward_click_gesture
                 .connect_pressed(clone!(@weak obj => move |_,_,_,_| {
-                    obj.image_view().navigate(Direction::Forward);
+                    obj.image_view().navigate(Direction::Forward, true);
                 }));
             self.backward_click_gesture
                 .connect_pressed(clone!(@weak obj => move |_,_,_,_| {
-                    obj.image_view().navigate(Direction::Back);
+                    obj.image_view().navigate(Direction::Back, true);
                 }));
             self.properties_button
                 .connect_toggled(clone!(@weak obj => move |_| {