Allow the scheduler to have a start time that's after the end time. Closes #980.

src/preferences/options_imp.cpp

@@ -1414,8 +1414,6 @@ bool options_imp::schedTimesOk() {
 
   if (schedule_from->time() == schedule_to->time())
     msg = tr("The start time and the end time can't be the same.");
-  else if (schedule_from->time() > schedule_to->time())
-    msg = tr("The start time can't be after the end time.");
 
   if (!msg.isEmpty()) {
     QMessageBox::critical(this, tr("Time Error"), msg);

src/qtlibtorrent/bandwidthscheduler.h

@@ -32,8 +32,16 @@ public slots:
     int sched_days = pref.getSchedulerDays();
     int day = QDateTime::currentDateTime().toLocalTime().date().dayOfWeek();
     bool new_mode = false;
+    bool reverse = false;
 
-    if (start < end && start <= now && end >= now) {
+    if (start > end) {
+      QTime temp = start;
+      start = end;
+      end = temp;
+      reverse = true;
+    }
+
+    if (start <= now && end >= now) {
       switch(sched_days) {
       case EVERY_DAY:
         new_mode = true;
@@ -53,6 +61,9 @@ public slots:
       }
     }
 
+    if (reverse)
+      new_mode = !new_mode;
+
     if (new_mode != alt_bw_enabled)
       emit switchToAlternativeMode(new_mode);