From 7a740a2f5d97f26575fb449b8c8ebb83f21dc6fb Mon Sep 17 00:00:00 2001
From: Devin Lin <espidev@gmail.com>
Date: Mon, 22 Feb 2021 16:08:43 +0000
Subject: [PATCH] Tweak app drawer behavior

- Only trigger the app drawer open/close animation if the flick goes over an eighth of the screen so that small flicks do not trigger it
- Adjust easing curve to be OutQuad so that fast flicks don't feel slow (have to slow to a stop, and then animation triggers)
- Increase animation duration to account for OutQuad curve
- Animate opacity of application icons as the app drawer comes in and out
---
 .../contents/ui/launcher/AppDrawer.qml        | 27 ++++++++++++++++---
 1 file changed, 23 insertions(+), 4 deletions(-)

diff --git a/containments/homescreen/package/contents/ui/launcher/AppDrawer.qml b/containments/homescreen/package/contents/ui/launcher/AppDrawer.qml
index 6e7e2ee5..ed6508b7 100644
--- a/containments/homescreen/package/contents/ui/launcher/AppDrawer.qml
+++ b/containments/homescreen/package/contents/ui/launcher/AppDrawer.qml
@@ -98,9 +98,17 @@ Item {
         }
 
         if (view.movementDirection === AppDrawer.MovementDirection.Up) {
-            open();
+            if (view.contentY > 7 * -view.height / 8) { // over one eighth of the screen
+                open();
+            } else {
+                close();
+            }
         } else {
-            close();
+            if (view.contentY < -view.height / 8) { // over one eighth of the screen 
+                close();
+            } else {
+                open();
+            }
         }
     }
 
@@ -116,8 +124,9 @@ Item {
         id: scrollAnim
         target: view
         properties: "contentY"
-        duration: units.longDuration
-        easing.type: Easing.InOutQuad
+        duration: units.longDuration * 2
+        easing.type: Easing.OutQuad
+        easing.amplitude: 2.0
     }
 
     PC3.Label {
@@ -170,6 +179,16 @@ Item {
             bottomMargin: root.bottomPadding
         }
 
+        opacity: {
+            if (root.status == AppDrawer.Status.Open) {
+                return 1;
+            } else if (root.status == AppDrawer.Status.Closed) {
+                return 0;
+            } else { // peeking
+                return (1 - view.contentY / -view.height);
+            }
+        }
+        
         visible: root.status !== AppDrawer.Status.Closed
         cellWidth: view.width / Math.floor(view.width / ((root.availableCellHeight - root.reservedSpaceForLabel) + units.smallSpacing*4))
         cellHeight: root.availableCellHeight