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author | Alan Alpert <alan.alpert@nokia.com> | 2012-04-23 14:39:48 +1000 |
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committer | Qt by Nokia <qt-info@nokia.com> | 2012-04-26 04:53:08 +0200 |
commit | a5336a0577b715edf49bef3794c6b1a8fa225a73 (patch) | |
tree | a7cc3ad59d7af572e1582aa9f8eb9546697a7e6c /examples/quick/threading/threading.qml | |
parent | 5e62f313588dc81c7284c4eb451cb9ebe7f3c994 (diff) |
More example docs
MouseArea, Threading and TouchInteraction
Change-Id: I9ca812d20a6c87d68ef91066ae0a4b9bc8829478
Reviewed-by: Michael Brasser <michael.brasser@nokia.com>
Diffstat (limited to 'examples/quick/threading/threading.qml')
-rw-r--r-- | examples/quick/threading/threading.qml | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/examples/quick/threading/threading.qml b/examples/quick/threading/threading.qml index b96c6975ac..cff4dd83b9 100644 --- a/examples/quick/threading/threading.qml +++ b/examples/quick/threading/threading.qml @@ -48,8 +48,20 @@ import "../../shared" as Examples \image qml-threading-example.png Threaded ListModel contains a ListView and a ListModel. The ListModel is updated asynchronusly in another thread, and the results propagate back to the main thread. + A timer requests updates from the worker thread periodically: + \snippet examples/threading/threadedlistmodel/timedisplay.qml 0 + + Inside the worker thread, the ListModel is synchronized once the data is finished loading: + \snippet examples/threading/threadedlistmodel/dataloader.js 0 WorkerScript contains an example of using a WorkerScript to offload expensive calculations into another thread. This keeps the UI from being blocked. This example calculates numbers in Pascal's Triangle, and not in a very optimal way, so it will often take several seconds to complete the calculation. By doing this in a WorkerScript in another thread, the UI is not blocked during this time. + + When the UI needs another value, a request is sent to the WorkerScript: + \snippet examples/threading/workerscript/workerscript.qml 0 + The workerscript then is free to take a really long time to calculate it: + \snippet examples/threading/workerscript/workerscript.js 0 + When it's done, the result returns to the main scene via the WorkerScript element: + \snippet examples/threading/workerscript/workerscript.qml 1 */ Item { |