iot-sensortag: Allow reconnect after a failed connection attempt

A disconnected sensor tag can be tried to be reconnected by clicking
on the chart area or starting rescan from the Sensor settings menu.
During a (re)connection process a progress indicator is shown to
the user.

The user has a possibility to disconnect (and reconnect) a
currently connect SensorDataProvider

A new state, 'NotFound' is added in SensorTagDataProvider to
distinguish between states when a Sensor Tag has not been discovered
at all, and when it has already been discovered but is has been
disconnected.

Change-Id: I54eea72d8c92a67a5ccbb3bc192ac8f33ada1c39
Reviewed-by: Maurice Kalinowski <maurice.kalinowski@qt.io>

1 files changed, 37 insertions, 0 deletions

diff --git a/tradeshow/iot-sensortag/resources/base/main.qml b/tradeshow/iot-sensortag/resources/base/main.qml
index c55d8ee..2840433 100644
--- a/tradeshow/iot-sensortag/resources/base/main.qml
+++ b/tradeshow/iot-sensortag/resources/base/main.qml
@@ -58,6 +58,7 @@ Window {
     property alias contentFile: contentLoader.source
     property DataProviderPool dataProviderPool
     property SeriesStorage seriesStorage
+    property real globalBlinkOpacity: 1.0
 
     // Size defaults to the small display
     width: 1920
@@ -76,4 +77,40 @@ Window {
         anchors.fill: parent
         anchors.centerIn: parent
     }
+
+
+
+    function startBlink() {
+        flash.blinkers++;
+    }
+
+    function stopBlink() {
+        flash.blinkers--;
+    }
+
+    // Animation to allow synchronized
+    // blinking of BlinkingIcons
+    SequentialAnimation {
+        id: flash
+
+        property int blinkers: 0
+
+        running: blinkers
+        loops: Animation.Infinite
+        alwaysRunToEnd: true
+
+        PropertyAnimation {
+            target: mainWindow
+            property: "globalBlinkOpacity"
+            to: 0.3
+            duration: 700
+        }
+
+        PropertyAnimation {
+            target: mainWindow
+            property: "globalBlinkOpacity"
+            to: 1
+            duration: 700
+        }
+    }
 }