Snake demo now pauses when the window loses focus.

Task-number: QTBUG-11592

3 files changed, 13 insertions, 3 deletions

diff --git a/demos/declarative/snake/content/pics/pause.png b/demos/declarative/snake/content/pics/pause.png
new file mode 100644
index 0000000..056d97d
--- /dev/null
+++ b/demos/declarative/snake/content/pics/pause.png
diff --git a/demos/declarative/snake/content/snake.js b/demos/declarative/snake/content/snake.js
index c2e9d3a..5c089de 100644
--- a/demos/declarative/snake/content/snake.js
+++ b/demos/declarative/snake/content/snake.js
@@ -32,7 +32,7 @@ function startNewGame()
     if (state == "starting")
         return;
 
-    if (heartbeat.running) {
+    if (activeGame) {
         endGame();
         startNewGameTimer.running = true;
         state = "";
@@ -87,7 +87,7 @@ function startNewGame()
 
 function endGame()
 {
-    heartbeat.running = false;
+    activeGame = false;
     for(var i in snake)
         snake[i].dying = true;
     if (cookie) {
diff --git a/demos/declarative/snake/snake.qml b/demos/declarative/snake/snake.qml
index 5b69217..6eaa976 100644
--- a/demos/declarative/snake/snake.qml
+++ b/demos/declarative/snake/snake.qml
@@ -47,6 +47,7 @@ Rectangle {
     id: screen;
     SystemPalette { id: activePalette }
     color: activePalette.window
+    property bool activeGame: false
 
     property int gridSize : 34
     property int margin: 4
@@ -75,6 +76,7 @@ Rectangle {
     Timer {
         id: heartbeat;
         interval: heartbeatInterval;
+        running: activeGame && runtime.isActiveWindow
         repeat: true
         onTriggered: { Logic.move() }
     }
@@ -94,9 +96,17 @@ Rectangle {
     Timer {
         id: startHeartbeatTimer;
         interval: 1000 ;
-        onTriggered: { state = "running"; heartbeat.running = true; }
+        onTriggered: { state = "running"; activeGame = true; }
     }
 
+    Image{
+        id: pauseDialog
+        z: 1
+        source: "content/pics/pause.png"
+        anchors.centerIn: parent;
+        //opacity is deliberately not animated
+        opacity: gameActive && !runtime.isActiveWindow
+    }
 
     Image {
         Image {