Timeline: scroll faster with mouse wheel

client/qml/Timeline.qml

@@ -262,6 +262,21 @@ Rectangle {
                 contentY = Math.min(originY + contentHeight - height,
                                     contentY + height)
             }
+            function onWheel(wheel) {
+                if (wheel.angleDelta.x == 0) {
+                    var yDelta = wheel.angleDelta.y / 120 * 100
+
+                    if (yDelta > 0) {
+                        contentY = Math.max(originY, contentY - yDelta)
+                    } else {
+                        contentY = Math.min(contentY + (originY + contentHeight) - (contentY + height),
+                                            contentY + Math.abs(yDelta))
+                    }
+                    wheel.accepted = true
+                } else {
+                    wheel.accepted = false
+                }
+            }
             Connections {
                 target: controller
                 onPageUpPressed: chatView.pageUp()

client/qml/TimelineItem.qml

@@ -120,14 +120,18 @@ Item {
 
         Rectangle {
             width: parent.width
-            height: childrenRect.height + 2
+            height: sectionLabel.height + 2
             visible: sectionVisible
             color: defaultPalette.window
             Label {
+                id: sectionLabel
                 font.bold: true
                 renderType: settings.render_type
                 text: section
             }
+            TimelineMouseArea {
+                anchors.fill: parent
+            }
         }
         Loader {
             id: detailsAreaLoader
@@ -138,13 +142,21 @@ Item {
             width: parent.width
 
             sourceComponent: detailsArea
+
+            TimelineMouseArea {
+                anchors.fill: parent
+            }
         }
 
         Item {
             id: message
             width: parent.width
             height: childrenRect.height
 
+            TimelineMouseArea {
+                anchors.fill: parent
+            }
+
             // There are several layout styles (av - author avatar,
             // al - author label, ts - timestamp, c - content
             // default (when "timeline_style" is not "xchat"):

client/qml/TimelineMouseArea.qml

@@ -0,0 +1,5 @@
+import QtQuick 2.2
+
+MouseArea {
+    onWheel: chatView.onWheel(wheel)
+}

client/resources.qrc

@@ -14,5 +14,6 @@
         <file>qml/FileContent.qml</file>
         <file>qml/TimelineItem.qml</file>
         <file>qml/ActiveLabel.qml</file>
+        <file>qml/TimelineMouseArea.qml</file>
     </qresource>
 </RCC>