changeset 924:85879408f665 tonioni

Cancel async layer creation in Tony when selection is changed during it

--- a/transform/ModelTransformerFactory.cpp	Fri Jun 13 17:39:01 2014 +0100
+++ b/transform/ModelTransformerFactory.cpp	Mon Jun 16 09:28:12 2014 +0100
@@ -106,7 +106,6 @@
     } else if (RealTimePluginFactory::instanceFor(id)) {
 
         RealTimePluginFactory *factory = RealTimePluginFactory::instanceFor(id);
-        const RealTimePluginDescriptor *desc = factory->getPluginDescriptor(id);
 
         size_t sampleRate = inputModel->getSampleRate();
         size_t blockSize = 1024;
@@ -234,7 +233,7 @@
         QString trn =
             TransformFactory::getInstance()->getTransformFriendlyName
             (transforms[0].getIdentifier());
-        for (int i = 0; i < models.size(); ++i) {
+        for (int i = 0; i < (int)models.size(); ++i) {
             if (imn != "") {
                 if (trn != "") {
                     models[i]->setObjectName(tr("%1: %2").arg(imn).arg(trn));

--- a/transform/ModelTransformerFactory.h	Fri Jun 13 17:39:01 2014 +0100
+++ b/transform/ModelTransformerFactory.h	Mon Jun 16 09:28:12 2014 +0100
@@ -84,7 +84,8 @@
      * Return the output model resulting from applying the named
      * transform to the given input model.  The transform may still be
      * working in the background when the model is returned; check the
-     * output model's isReady completion status for more details.
+     * output model's isReady completion status for more details. To
+     * cancel a background transform, call abandon() on its model.
      *
      * If the transform is unknown or the input model is not an
      * appropriate type for the given transform, or if some other
@@ -116,7 +117,8 @@
      * (as appropriate). Models will be returned in the same order as
      * the transforms were given. The plugin may still be working in
      * the background when the model is returned; check the output
-     * models' isReady completion statuses for more details.
+     * models' isReady completion statuses for more details. To cancel
+     * a background transform, call abandon() on its model.
      *
      * If a transform is unknown or the transforms are insufficiently
      * closely related or the input model is not an appropriate type
@@ -130,7 +132,10 @@
      * is provided here, its moreModelsAvailable method will be called
      * when those models become available, and ownership of those
      * models will be transferred to the handler. Otherwise (if the
-     * handler is null) any such models will be discarded.
+     * handler is null) any such models will be discarded. Note that
+     * calling abandon() on any one of the models returned by
+     * transformMultiple is sufficient to cancel all background
+     * transform activity associated with these output models.
      *
      * The returned models are owned by the caller and must be deleted
      * when no longer needed.