Merge branch 'ios-support-wip' into feature/touch-support

1 files changed, 46 insertions, 3 deletions

diff --git a/native/src/widget/scrollable.rs b/native/src/widget/scrollable.rs
index e23ab06a..8c321ee5 100644
--- a/native/src/widget/scrollable.rs
+++ b/native/src/widget/scrollable.rs
@@ -4,6 +4,7 @@ use crate::event::{self, Event};
 use crate::layout;
 use crate::mouse;
 use crate::overlay;
+use crate::touch::{self, Touch};
 use crate::{
     Align, Clipboard, Column, Element, Hasher, Layout, Length, Point,
     Rectangle, Size, Vector, Widget,
@@ -229,6 +230,26 @@ where
 
                     return event::Status::Captured;
                 }
+                Event::Touch(Touch { phase, .. }) => match phase {
+                    touch::Phase::Started => {
+                        self.state.scroll_box_touched_at =
+                            Some(cursor_position);
+                    }
+                    touch::Phase::Moved => {
+                        if let Some(scroll_box_touched_at) =
+                            self.state.scroll_box_touched_at
+                        {
+                            let delta =
+                                cursor_position.y - scroll_box_touched_at.y;
+                            self.state.scroll(delta, bounds, content_bounds);
+                            self.state.scroll_box_touched_at =
+                                Some(cursor_position);
+                        }
+                    }
+                    touch::Phase::Ended | touch::Phase::Canceled => {
+                        self.state.scroll_box_touched_at = None;
+                    }
+                },
                 _ => {}
             }
         }
@@ -237,12 +258,24 @@ where
             match event {
                 Event::Mouse(mouse::Event::ButtonReleased(
                     mouse::Button::Left,
-                )) => {
+                ))
+                | Event::Touch(Touch {
+                    phase: touch::Phase::Ended,
+                    ..
+                })
+                | Event::Touch(Touch {
+                    phase: touch::Phase::Canceled,
+                    ..
+                }) => {
                     self.state.scroller_grabbed_at = None;
 
                     return event::Status::Captured;
                 }
-                Event::Mouse(mouse::Event::CursorMoved { .. }) => {
+                Event::Mouse(mouse::Event::CursorMoved { .. })
+                | Event::Touch(Touch {
+                    phase: touch::Phase::Moved,
+                    ..
+                }) => {
                     if let (Some(scrollbar), Some(scroller_grabbed_at)) =
                         (scrollbar, self.state.scroller_grabbed_at)
                     {
@@ -264,7 +297,11 @@ where
             match event {
                 Event::Mouse(mouse::Event::ButtonPressed(
                     mouse::Button::Left,
-                )) => {
+                ))
+                | Event::Touch(Touch {
+                    phase: touch::Phase::Started,
+                    ..
+                }) => {
                     if let Some(scrollbar) = scrollbar {
                         if let Some(scroller_grabbed_at) =
                             scrollbar.grab_scroller(cursor_position)
@@ -385,6 +422,7 @@ where
 #[derive(Debug, Clone, Copy, Default)]
 pub struct State {
     scroller_grabbed_at: Option<f32>,
+    scroll_box_touched_at: Option<Point>,
     offset: f32,
 }
 
@@ -439,6 +477,11 @@ impl State {
     pub fn is_scroller_grabbed(&self) -> bool {
         self.scroller_grabbed_at.is_some()
     }
+
+    /// Returns whether the scroll box is currently touched or not.
+    pub fn is_scroll_box_touched(&self) -> bool {
+        self.scroll_box_touched_at.is_some()
+    }
 }
 
 /// The scrollbar of a [`Scrollable`].