improvements for task progress

--unload task progress properly
--improbe the shadow appearance
--repaint progress only when it is needed

plasmoid/contents/ui/CircleText.qml

@@ -22,7 +22,9 @@ import QtQuick 2.2
 import QtGraphicalEffects 1.0
 
 Item {
-    property double proportion
+    property double proportion: 0
+
+    property double previousProportion: 0
 
     property string valueLabel
     property string numberValue
@@ -41,7 +43,12 @@ Item {
     property double pi2: Math.PI * 2
 
     onProportionChanged: {
-        repaint()
+        console.log(previousProportion + " - "+proportion);
+        if ((proportion - 0.03 >= previousProportion) || (proportion===1)) {
+            console.log("request repaint...");
+            previousProportion = proportion;
+            repaint();
+        }
     }
 
     function repaint() {
@@ -61,7 +68,6 @@ Item {
 
         width: parent.width
         height: parent.height
-        antialiasing: true
         opacity: 1.0
 
         onPaint: {
@@ -84,12 +90,15 @@ Item {
 
     DropShadow {
         anchors.fill: canvas
-        radius: 4
+        radius: 2
         samples: 8
         spread: 0.5
         fast: true
+        opacity: 0.65
         color: theme.backgroundColor
         source: canvas
+
+        enabled: root.enableShadows
     }
 
     Text {
@@ -103,13 +112,16 @@ Item {
 
     DropShadow {
         anchors.fill: valueText
-        radius: 3
+        radius: 2
         samples: 8
         spread: 0.6
         fast: true
+        opacity: 0.65
         color: theme.backgroundColor
         source: valueText
         visible: showNumber
+
+        enabled: root.enableShadows
     }
 
     Text {

plasmoid/contents/ui/TaskIconItem.qml

@@ -81,6 +81,21 @@ Item{
         updateImages();
     }
 
+    onSmartLauncherEnabledChanged: {
+        if (smartLauncherEnabled && !smartLauncherItem) {
+            var smartLauncher = Qt.createQmlObject(
+                        " import org.kde.plasma.private.taskmanager 0.1 as TaskManagerApplet; TaskManagerApplet.SmartLauncherItem { }",
+                        centralItem);
+
+            smartLauncher.launcherUrl = Qt.binding(function() { return model.LauncherUrlWithoutIcon; });
+
+            smartLauncherItem = smartLauncher;
+        } else if (!smartLauncherEnabled && smartLauncherItem) {
+            smartLauncherItem.destroy();
+            smartLauncherItem = null;
+        }
+    }
+
     Rectangle{
         id: draggedRectangle
         width: iconImageBuffer.width+1
@@ -385,15 +400,6 @@ Item{
 
 
     Component.onCompleted: {
-        if (smartLauncherEnabled && !smartLauncherItem) {
-            var smartLauncher = Qt.createQmlObject(
-                        " import org.kde.plasma.private.taskmanager 0.1 as TaskManagerApplet; TaskManagerApplet.SmartLauncherItem { }",
-                        centralItem);
-
-            smartLauncher.launcherUrl = Qt.binding(function() { return model.LauncherUrlWithoutIcon; });
-
-            smartLauncherItem = smartLauncher;
-        }
     }
 
     Component.onDestruction: {

plasmoid/contents/ui/TaskProgressOverlay.qml

@@ -33,7 +33,7 @@ Item {
         numberValue: centralItem.smartLauncherItem.count
         fullCircle: true
         showNumber: true
-        proportion: centralItem.smartLauncherItem.progress / 100
+        proportion: centralItem.smartLauncherItem ? centralItem.smartLauncherItem.progress / 100 : 0
 
         states: [
             State {