Reformat elapsed time in processing to express time in hours, minutes…

… and seconds (#41573)

When appropriate, express the elapsed time in hours, minutes and seconds in addition to cumulative seconds.

python/plugins/processing/gui/AlgorithmDialog.py

@@ -172,6 +172,28 @@ def runAlgorithm(self):
             self.feedback.pushInfo('')
             start_time = time.time()
 
+            def elapsed_time(start_time, result):
+                delta_t = time.time() - start_time
+                hours = int(delta_t / 3600)
+                minutes = int((delta_t % 3600) / 60)
+                seconds = delta_t - hours * 3600 - minutes * 60
+
+                str_hours = [self.tr("hour"), self.tr("hours")][hours > 1]
+                str_minutes = [self.tr("minute"), self.tr("minutes")][minutes > 1]
+                str_seconds = [self.tr("second"), self.tr("seconds")][seconds != 1]
+
+                if hours > 0:
+                    elapsed = '{0} {1:0.2f} {2} ({3} {4} {5} {6} {7:0.0f} {2})'.format(
+                        result, delta_t, str_seconds, hours, str_hours, minutes, str_minutes, seconds)
+                elif minutes > 0:
+                    elapsed = '{0} {1:0.2f} {2} ({3} {4} {5:0.0f} {2})'.format(
+                        result, delta_t, str_seconds, minutes, str_minutes, seconds)
+                else:
+                    elapsed = '{0} {1:0.2f} {2}'.format(
+                        result, delta_t, str_seconds)
+
+                return(elapsed)
+
             if self.iterateParam:
                 # Make sure the Log tab is visible before executing the algorithm
                 try:
@@ -183,7 +205,7 @@ def runAlgorithm(self):
                 self.cancelButton().setEnabled(self.algorithm().flags() & QgsProcessingAlgorithm.FlagCanCancel)
                 if executeIterating(self.algorithm(), parameters, self.iterateParam, self.context, self.feedback):
                     self.feedback.pushInfo(
-                        self.tr('Execution completed in {0:0.2f} seconds').format(time.time() - start_time))
+                        self.tr(elapsed_time(start_time, 'Execution completed in')))
                     self.cancelButton().setEnabled(False)
                     self.finish(True, parameters, self.context, self.feedback)
                 else:
@@ -199,13 +221,13 @@ def runAlgorithm(self):
                 def on_complete(ok, results):
                     if ok:
                         self.feedback.pushInfo(
-                            self.tr('Execution completed in {0:0.2f} seconds').format(time.time() - start_time))
+                            self.tr(elapsed_time(start_time, 'Execution completed in')))
                         self.feedback.pushInfo(self.tr('Results:'))
                         r = {k: v for k, v in results.items() if k not in ('CHILD_RESULTS', 'CHILD_INPUTS')}
                         self.feedback.pushCommandInfo(pformat(r))
                     else:
                         self.feedback.reportError(
-                            self.tr('Execution failed after {0:0.2f} seconds').format(time.time() - start_time))
+                            self.tr(elapsed_time(start_time, 'Execution failed after')))
                     self.feedback.pushInfo('')
 
                     if self.feedback_dialog is not None: