Add a way to early abort a task from a Job, apply that to the highlight effect to shave unecessary work

libraries/render-utils/src/HighlightEffect.cpp

@@ -455,7 +455,7 @@ void SelectionToHighlight::run(const render::RenderContextPointer& renderContext
     }
 
     if (numLayers == 0) {
-        renderContext->abortTask();
+        renderContext->taskFlow.abortTask();
     }
 }
 

libraries/task/src/task/Task.cpp

@@ -20,15 +20,15 @@ JobContext::JobContext(const QLoggingCategory& category) :
 JobContext::~JobContext() {
 }
 
-void JobContext::resetTaskFlow() {
+void TaskFlow::reset() {
     _doAbortTask = false;
 }
 
-void JobContext::abortTask() {
+void TaskFlow::abortTask() {
     _doAbortTask = true;
 }
 
-bool JobContext::doAbortTask() const {
+bool TaskFlow::doAbortTask() const {
     return _doAbortTask;
 }
 

libraries/task/src/task/Task.h

@@ -27,6 +27,21 @@ template <class JC> class JobT;
 template <class JC> class TaskT;
 class JobNoIO {};
 
+class TaskFlow {
+public:
+    TaskFlow() = default;
+    ~TaskFlow() = default;
+
+    // called after each job 
+    void reset();
+
+    void abortTask();
+    bool doAbortTask() const;
+
+protected:
+    bool _doAbortTask{ false };
+};
+
 class JobContext {
 public:
     JobContext(const QLoggingCategory& category);
@@ -35,15 +50,10 @@ public:
     std::shared_ptr<JobConfig> jobConfig { nullptr };
     const QLoggingCategory& profileCategory;
 
-    // control flow commands
+    // Task flow control
-    void resetTaskFlow();
+    TaskFlow taskFlow{};
-    void abortTask();
-
-    // Check command flow
-    bool doAbortTask() const;
 
 protected:
-    bool _doAbortTask{ false };
 };
 using JobContextPointer = std::shared_ptr<JobContext>;
 
@@ -316,8 +326,8 @@ public:
             if (config->alwaysEnabled || config->enabled) {
                 for (auto job : TaskConcept::_jobs) {
                     job.run(jobContext);
-                    if (jobContext->doAbortTask()) {
+                    if (jobContext->taskFlow.doAbortTask()) {
-                        jobContext->resetTaskFlow();
+                        jobContext->taskFlow.reset();
                         return;
                     }
                 }