Scroll behavior component

AUTHORS

@@ -11,3 +11,4 @@ Kaiyin Zhong
 Kaur Kuut
 Leopold Luley
 Andrey Kabylin
+Garrett Risley

CHANGELOG.md

@@ -14,12 +14,14 @@ You can find its changes [documented below](#060---2020-06-01).
 - Re-export `druid_shell::Scalable` under `druid` namespace. ([#1075] by [@ForLoveOfCats])
 - `TextBox` now supports ctrl and shift hotkeys. ([#1076] by [@vkahl])
 - Added selection text color to textbox. ([#1093] by [@sysint64])
+- `scroll_component` for ease of adding consistant, customized, scrolling behavior to a widget. ([#1107] by [@ForLoveOfCats])
 
 ### Changed
 
 - `Scale::from_scale` to `Scale::new`, and `Scale` methods `scale_x` / `scale_y` to `x` / `y`. ([#1042] by [@xStrom])
 - Major rework of keyboard event handling. ([#1049] by [@raphlinus])
 - `Container::rounded` takes `KeyOrValue<f64>` instead of `f64`. ([#1054] by [@binomial0])
+- `List` handles its own scrolling on either the vertical or horizontal axis. ([#1107] by [@ForLoveOfCats])
 
 ### Deprecated
 
@@ -382,6 +384,7 @@ Last release without a changelog :(
 [#1093]: https://github.com/linebender/druid/pull/1093
 [#1100]: https://github.com/linebender/druid/pull/1100
 [#1103]: https://github.com/linebender/druid/pull/1103
+[#1107]: https://github.com/linebender/druid/pull/1107
 [#1119]: https://github.com/linebender/druid/pull/1119
 [#1120]: https://github.com/linebender/druid/pull/1120
 

druid/examples/list.rs

@@ -16,7 +16,7 @@
 
 use druid::im::{vector, Vector};
 use druid::lens::{self, LensExt};
-use druid::widget::{Button, CrossAxisAlignment, Flex, Label, List, Scroll};
+use druid::widget::{Button, CrossAxisAlignment, Flex, Label, List};
 use druid::{
     AppLauncher, Color, Data, Lens, LocalizedString, UnitPoint, Widget, WidgetExt, WindowDesc,
 };
@@ -64,22 +64,21 @@ fn ui_builder() -> impl Widget<AppData> {
 
     // Build a simple list
     lists.add_flex_child(
-        Scroll::new(List::new(|| {
+        List::new(|| {
             Label::new(|item: &u32, _env: &_| format!("List item #{}", item))
                 .align_vertical(UnitPoint::LEFT)
                 .padding(10.0)
                 .expand()
                 .height(50.0)
                 .background(Color::rgb(0.5, 0.5, 0.5))
-        }))
-        .vertical()
+        })
         .lens(AppData::left),
         1.0,
     );
 
     // Build a list with shared data
     lists.add_flex_child(
-        Scroll::new(List::new(|| {
+        List::new(|| {
             Flex::row()
                 .with_child(
                     Label::new(|(_, item): &(Vector<u32>, u32), _env: &_| {
@@ -101,8 +100,7 @@ fn ui_builder() -> impl Widget<AppData> {
                 .padding(10.0)
                 .background(Color::rgb(0.5, 0.0, 0.5))
                 .fix_height(50.0)
-        }))
-        .vertical()
+        })
         .lens(lens::Id.map(
             // Expose shared data with children data
             |d: &AppData| (d.right.clone(), d.right.clone()),

druid/src/lib.rs

@@ -153,6 +153,7 @@ pub mod lens;
 mod localization;
 mod menu;
 mod mouse;
+pub mod scroll_component;
 #[cfg(not(target_arch = "wasm32"))]
 #[cfg(test)]
 mod tests;