From 8c44c5e2d0360e73a1ee534f9ffa46a24c1bc059 Mon Sep 17 00:00:00 2001
From: Nicolas Werner <nicolas.werner@hotmail.de>
Date: Sun, 8 Dec 2019 00:54:28 +0100
Subject: [PATCH] Change scroll behaviour of timeline

This requires Qt 5.9 (to calculate overshoot).
The default scroll behaviour of list views has far too much inertia.
This should make scrolling feel more like scrolling the other scroll
areas of nheko.
---
 .travis.yml                    |  4 ++--
 README.md                      |  4 ++--
 resources/qml/TimelineView.qml | 25 ++++++++++++++++++++++++-
 3 files changed, 28 insertions(+), 5 deletions(-)

diff --git a/.travis.yml b/.travis.yml
index b6112eb1..4ab6408a 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -43,8 +43,8 @@ matrix:
           env:
               - CXX_COMPILER=g++-8
               - C_COMPILER=gcc-8
-              - QT_VERSION=58
-              - QT_PKG=58
+              - QT_VERSION=592
+              - QT_PKG=59
               - USE_BUNDLED_BOOST=1
               - USE_BUNDLED_CMARK=1
               - USE_BUNDLED_JSON=1
diff --git a/README.md b/README.md
index 0380a90a..1179463d 100644
--- a/README.md
+++ b/README.md
@@ -89,7 +89,7 @@ sudo port install nheko
 
 ### Build Requirements
 
-- Qt5 (5.8 or greater). Qt 5.7 adds support for color font rendering with
+- Qt5 (5.9 or greater). Qt 5.7 adds support for color font rendering with
   Freetype, which is essential to properly support emoji, 5.8 adds some features
   to make interopability with Qml easier.
 - CMake 3.15 or greater. (Lower version may work, but may break boost linking)
@@ -132,7 +132,7 @@ sudo pacman -S qt5-base \
 ##### Gentoo Linux
 
 ```bash
-sudo emerge -a ">=dev-qt/qtgui-5.7.1" media-libs/fontconfig
+sudo emerge -a ">=dev-qt/qtgui-5.9.0" media-libs/fontconfig
 ```
 
 ##### Ubuntu (e.g 14.04)
diff --git a/resources/qml/TimelineView.qml b/resources/qml/TimelineView.qml
index 0defa282..238f21c7 100644
--- a/resources/qml/TimelineView.qml
+++ b/resources/qml/TimelineView.qml
@@ -1,4 +1,4 @@
-import QtQuick 2.6
+import QtQuick 2.9
 import QtQuick.Controls 2.1
 import QtQuick.Layouts 1.2
 import QtGraphicalEffects 1.0
@@ -46,6 +46,29 @@ Item {
 
 			model: timelineManager.timeline
 
+			boundsBehavior: Flickable.StopAtBounds
+
+			onVerticalOvershootChanged: contentY = contentY - verticalOvershoot
+
+			MouseArea {
+				anchors.fill: parent
+				acceptedButtons: Qt.NoButton
+				propagateComposedEvents: true
+				z: -1
+				onWheel: {
+					if (wheel.angleDelta != 0) {
+						chat.contentY = chat.contentY - wheel.angleDelta.y
+						if (wheel.angleDelta.y > 0 && chat.contentY > chat.contentHeight - chat.height)
+							chat.contentY = chat.contentHeight - chat.height
+						else if (wheel.angleDelta < 0 && chat.contentY < 0)
+							chat.contentY = 0
+						wheel.accepted = true
+						chat.forceLayout()
+						chat.updatePosition()
+					}
+				}
+			}
+
 			onModelChanged: {
 				if (model) {
 					currentIndex = model.currentIndex