From f4c25b9db3964880386782405fcfd9ba7efb61cc Mon Sep 17 00:00:00 2001
From: thyttan <6uuxstm66@mozmail.com⁩>
Date: Mon, 31 Jul 2023 19:46:44 +0200
Subject: [PATCH] dragboard: Compat w backswipe on newer firmwares

---
 apps/dragboard/ChangeLog     |  3 +++
 apps/dragboard/lib.js        | 50 +++++++++++++++++++++---------------
 apps/dragboard/metadata.json |  2 +-
 3 files changed, 33 insertions(+), 22 deletions(-)

diff --git a/apps/dragboard/ChangeLog b/apps/dragboard/ChangeLog
index faf3d2d33..86b13f288 100644
--- a/apps/dragboard/ChangeLog
+++ b/apps/dragboard/ChangeLog
@@ -5,3 +5,6 @@
 0.05: Now scrolls text when string gets longer than screen width.
 0.06: The code is now more reliable and the input snappier. Widgets will be drawn if present.
 0.07: Settings for display colors
+some characters.
+0.08: Catch and discard swipe events on fw2v19 and up (as well as some cutting
+	edge 2v18 ones), allowing compatability with the Back Swipe app.
diff --git a/apps/dragboard/lib.js b/apps/dragboard/lib.js
index 83aae5f14..66b296ffc 100644
--- a/apps/dragboard/lib.js
+++ b/apps/dragboard/lib.js
@@ -103,26 +103,7 @@ exports.input = function(options) {
   initDraw();
   //setTimeout(initDraw, 0); // So Bangle.appRect reads the correct environment. It would draw off to the side sometimes otherwise.
 
-  function changeCase(abcHL) {
-    if (settings.uppercase) return;
-    g.setColor(BGCOLOR);
-    g.setFontAlign(-1, -1, 0);
-    g.drawString(ABC, ABCPADDING, (R.y+R.h)/2);
-    if (ABC.charAt(abcHL) == ABC.charAt(abcHL).toUpperCase()) ABC = ABC.toLowerCase();
-    else ABC = ABC.toUpperCase();
-    g.setColor(ABCCOLOR);
-    g.drawString(ABC, ABCPADDING, (R.y+R.h)/2);
-  }
-  return new Promise((resolve,reject) => {
-    // Interpret touch input
-    Bangle.setUI({
-      mode: 'custom',
-      back: ()=>{
-        Bangle.setUI();
-        g.clearRect(Bangle.appRect);
-        resolve(text);
-      },
-      drag: function(event) {
+  let dragHandlerDB = function(event) {
         "ram";
         // ABCDEFGHIJKLMNOPQRSTUVWXYZ
         // Choose character by draging along red rectangle at bottom of screen
@@ -243,7 +224,34 @@ exports.input = function(options) {
             }
           }
         }
-      }
+      };
+
+  let catchSwipe = (_,__)=>{
+    E.stopEventPropagation&&E.stopEventPropagation();
+  };
+
+  function changeCase(abcHL) {
+    if (settings.uppercase) return;
+    g.setColor(BGCOLOR);
+    g.setFontAlign(-1, -1, 0);
+    g.drawString(ABC, ABCPADDING, (R.y+R.h)/2);
+    if (ABC.charAt(abcHL) == ABC.charAt(abcHL).toUpperCase()) ABC = ABC.toLowerCase();
+    else ABC = ABC.toUpperCase();
+    g.setColor(ABCCOLOR);
+    g.drawString(ABC, ABCPADDING, (R.y+R.h)/2);
+  }
+  return new Promise((resolve,reject) => {
+    // Interpret touch input
+    Bangle.setUI({
+      mode: 'custom',
+      back: ()=>{
+        Bangle.setUI();
+        Bangle.prependListener&&Bangle.removeListener('swipe', catchSwipe); // Remove swipe lister if it was added with `Bangle.prependListener()` (fw2v19 and up).
+        g.clearRect(Bangle.appRect);
+        resolve(text);
+      },
+      drag: dragHandlerDB,
     });
+    Bangle.prependListener&&Bangle.prependListener('swipe', catchSwipe); // Intercept swipes on fw2v19 and later. Should not break on older firmwares.
   });
 };
diff --git a/apps/dragboard/metadata.json b/apps/dragboard/metadata.json
index 58de5153c..5c52d9389 100644
--- a/apps/dragboard/metadata.json
+++ b/apps/dragboard/metadata.json
@@ -1,6 +1,6 @@
 { "id": "dragboard",
   "name": "Dragboard",
-  "version":"0.07",
+  "version":"0.08",
   "description": "A library for text input via swiping keyboard",
   "icon": "app.png",
   "type":"textinput",