Fix razor timeline cursor broken.

Fixes #706

src/timeline2/view/qml/Clip.qml

@@ -385,6 +385,7 @@ Rectangle {
                 x: -clipRoot.border.width
                 height: parent.height
                 width: root.baseUnit / 2
+                visible: root.activeTool === 0
                 enabled: !isLocked && (pressed || clipRoot.width > 3 * width)
                 hoverEnabled: true
                 drag.target: trimInMouseArea
@@ -473,6 +474,7 @@ Rectangle {
                 height: parent.height
                 width: root.baseUnit / 2
                 hoverEnabled: true
+                visible: root.activeTool === 0
                 enabled: !isLocked && (pressed || clipRoot.width > 3 * width)
                 property bool shiftTrim: false
                 property bool controlTrim: false

src/timeline2/view/qml/Composition.qml

@@ -131,7 +131,8 @@ Item {
         id: mouseArea
         anchors.fill: displayRect
         acceptedButtons: Qt.RightButton
-        hoverEnabled: true
+        enabled: root.activeTool === 0
+        hoverEnabled: root.activeTool === 0
         Keys.onShortcutOverride: event.accepted = compositionRoot.isGrabbed && (event.key === Qt.Key_Left || event.key === Qt.Key_Right || event.key === Qt.Key_Up || event.key === Qt.Key_Down || event.key === Qt.Key_Escape)
         Keys.onLeftPressed: {
             var offset = event.modifiers === Qt.ShiftModifier ? timeline.fps() : 1
@@ -304,6 +305,7 @@ Item {
             drag.target: parent
             drag.axis: Drag.XAxis
             drag.smoothed: false
+            visible: root.activeTool === 0
 
             onPressed: {
                 root.autoScrolling = false
@@ -354,6 +356,7 @@ Item {
             drag.target: parent
             drag.axis: Drag.XAxis
             drag.smoothed: false
+            visible: root.activeTool === 0
 
             onPressed: {
                 root.autoScrolling = false

src/timeline2/view/qml/timeline.qml

@@ -1284,7 +1284,7 @@ Rectangle {
                 color: 'red'
                 width: Math.max(1, 1 * timeline.scaleFactor)
                 opacity: (width > 2) ? 0.5 : 1
-                height: root.height - vertScroll.height - ruler.height
+                height: tracksContainerArea.height
                 x: 0
                 //x: root.consumerPosition * timeline.scaleFactor - scrollView.contentX
                 y: ruler.height