crates/dtmm/src/ui/widget/controller.rs

@@ -1,5 +1,5 @@
-use druid::widget::{Button, Controller};
+use druid::widget::{Button, Controller, Scroll};
-use druid::{Data, Env, Event, EventCtx, LifeCycle, LifeCycleCtx, UpdateCtx, Widget};
+use druid::{Data, Env, Event, EventCtx, LifeCycle, LifeCycleCtx, Rect, UpdateCtx, Widget};
 
 pub struct DisabledButtonController;
 
@@ -45,3 +45,23 @@ impl<T: Data> Controller<T, Button<T>> for DisabledButtonController {
         child.update(ctx, old_data, data, env)
     }
 }
+
+pub struct AutoScrollController;
+
+impl<T: Data, W: Widget<T>> Controller<T, Scroll<T, W>> for AutoScrollController {
+    fn update(
+        &mut self,
+        child: &mut Scroll<T, W>,
+        ctx: &mut UpdateCtx,
+        old_data: &T,
+        data: &T,
+        env: &Env,
+    ) {
+        if !ctx.is_disabled() {
+            let size = child.child_size();
+            let end_region = Rect::new(size.width - 1., size.height - 1., size.width, size.height);
+            child.scroll_to(ctx, end_region);
+        }
+        child.update(ctx, old_data, data, env)
+    }
+}

crates/dtmm/src/ui/window/main.rs

@@ -14,6 +14,7 @@ use crate::state::{
     ACTION_START_DELETE_SELECTED_MOD, ACTION_START_DEPLOY,
 };
 use crate::ui::theme;
+use crate::ui::widget::controller::AutoScrollController;
 use crate::ui::widget::ExtraWidgetExt;
 
 const TITLE: &str = "Darktide Mod Manager";
@@ -267,7 +268,8 @@ fn build_log_view() -> impl Widget<State> {
         .with_line_break_mode(LineBreaking::WordWrap)
         .lens(State::log)
         .scroll()
-        .vertical();
+        .vertical()
+        .controller(AutoScrollController);
 
     SizedBox::new(label).expand_width().height(128.0)
 }