feat: keybinds to change number of columns

src/app/mod.rs

@@ -23,6 +23,8 @@ enum Message {
 struct State {
     images: HashMap<PathBuf, Option<widget::image::Handle>>,
 
+    columns: usize,
+
     error: Option<String>,
 }
 
@@ -36,6 +38,7 @@ impl State {
         builder.select("supportedImages");
 
         Self {
+            columns: 3,
             error: None,
             images: WalkBuilder::new(
                 env::args()
@@ -87,6 +90,13 @@ impl State {
                     };
                 }
 
+                keyboard::Key::Character("=" | "+") => {
+                    self.columns = (self.columns + 1).clamp(1, 10)
+                }
+                keyboard::Key::Character("-" | "_") => {
+                    self.columns = (self.columns - 1).clamp(1, 10)
+                }
+
                 keyboard::Key::Character("q") => {
                     return window::latest().and_then(window::close);
                 }
@@ -98,8 +108,8 @@ impl State {
     }
     fn view(&self) -> Element<'_, Message, Theme, Renderer> {
         widget::column([
-            widget::scrollable(widget::grid(self.images.iter().map(
+            widget::scrollable(
-                |(path, opt_handle)| {
+                widget::grid(self.images.iter().map(|(path, opt_handle)| {
                     widget::button(
                         widget::container(
                             widget::sensor(opt_handle.as_ref().map_or_else(
@@ -114,8 +124,9 @@ impl State {
                     .style(widget::button::subtle)
                     .on_press(Message::OpenImage(path.clone()))
                     .into()
-                },
+                }))
-            )))
+                .columns(self.columns),
+            )
             .height(Length::Fill)
             .into(),
             self.error