From dc09da88789d5fa5392d61fb1b925748f46715f4 Mon Sep 17 00:00:00 2001
From: Olivier 'reivilibre <olivier@librepush.net>
Date: Sat, 26 Jun 2021 23:21:13 +0100
Subject: [PATCH] crude toggle touch impl

---
 native/src/widget/toggler.rs | 48 +++++++++++++++++++++++++++++++++---
 1 file changed, 45 insertions(+), 3 deletions(-)

diff --git a/native/src/widget/toggler.rs b/native/src/widget/toggler.rs
index e3fb27fd..022a2ca6 100644
--- a/native/src/widget/toggler.rs
+++ b/native/src/widget/toggler.rs
@@ -1,11 +1,13 @@
 //! Show toggle controls using togglers.
 use std::hash::Hash;
 
+use crate::touch::Finger;
 use crate::{
-    event, layout, mouse, row, text, Align, Clipboard, Element, Event, Hasher,
-    HorizontalAlignment, Layout, Length, Point, Rectangle, Row, Text,
+    event, layout, mouse, row, text, touch, Align, Clipboard, Element, Event,
+    Hasher, HorizontalAlignment, Layout, Length, Point, Rectangle, Row, Text,
     VerticalAlignment, Widget,
 };
+use std::collections::HashSet;
 
 /// A toggler widget
 ///
@@ -34,6 +36,8 @@ pub struct Toggler<Message, Renderer: self::Renderer + text::Renderer> {
     spacing: u16,
     font: Renderer::Font,
     style: Renderer::Style,
+
+    fingers_mid_press: HashSet<Finger>,
 }
 
 impl<Message, Renderer: self::Renderer + text::Renderer>
@@ -66,6 +70,8 @@ impl<Message, Renderer: self::Renderer + text::Renderer>
             spacing: 0,
             font: Renderer::Font::default(),
             style: Renderer::Style::default(),
+
+            fingers_mid_press: HashSet::with_capacity(2),
         }
     }
 
@@ -176,7 +182,43 @@ where
             }
             Event::Touch(x) => {
                 eprintln!("{:?}", x);
-                event::Status::Ignored
+
+                match x {
+                    touch::Event::FingerPressed { id, position } => {
+                        if layout.bounds().contains(position) {
+                            let _ = self.fingers_mid_press.insert(id);
+
+                            event::Status::Captured
+                        } else {
+                            event::Status::Ignored
+                        }
+                    }
+                    touch::Event::FingerMoved { id, position } => {
+                        if !layout.bounds().contains(position) {
+                            let _ = self.fingers_mid_press.remove(&id);
+
+                            event::Status::Captured
+                        } else {
+                            event::Status::Ignored
+                        }
+                    }
+                    touch::Event::FingerLifted { id, position } => {
+                        if self.fingers_mid_press.remove(&id)
+                            && layout.bounds().contains(position)
+                        {
+                            // this should be treated as a click
+                            messages.push((self.on_toggle)(!self.is_active));
+
+                            event::Status::Captured
+                        } else {
+                            event::Status::Ignored
+                        }
+                    }
+                    touch::Event::FingerLost { id, .. } => {
+                        let _ = self.fingers_mid_press.remove(&id);
+                        event::Status::Ignored
+                    }
+                }
             }
             _ => event::Status::Ignored,
         }