timeline: implemented system of moving selections and making them undoable

2020-10-03 22:33:10 +10:00
parent dd3d11c7e0
commit 8b4a073f35
7 changed files with 231 additions and 76 deletions
@@ -0,0 +1,59 @@
+/***
+
+  Olive - Non-Linear Video Editor
+  Copyright (C) 2019 Olive Team
+
+  This program is free software: you can redistribute it and/or modify
+  it under the terms of the GNU General Public License as published by
+  the Free Software Foundation, either version 3 of the License, or
+  (at your option) any later version.
+
+  This program is distributed in the hope that it will be useful,
+  but WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+  GNU General Public License for more details.
+
+  You should have received a copy of the GNU General Public License
+  along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+***/
+
+#include "timelinewidgetselections.h"
+
+OLIVE_NAMESPACE_ENTER
+
+void TimelineWidgetSelections::ShiftTime(const rational &diff)
+{
+  for (auto it=this->begin(); it!=this->end(); it++) {
+    for (auto it2=it.value().begin(); it2!=it.value().end(); it2++) {
+      (*it2) += diff;
+    }
+  }
+}
+
+void TimelineWidgetSelections::ShiftTracks(Timeline::TrackType type, int diff)
+{
+  TimelineWidgetSelections cached_selections;
+
+  {
+    // Take all selections of this track type
+    auto it = this->begin();
+    while (it != this->end()) {
+      if (it.key().type() == type) {
+        cached_selections.insert(it.key(), it.value());
+        it = this->erase(it);
+      } else {
+        it++;
+      }
+    }
+  }
+
+  // Then re-insert them with the diff applied
+  for (auto it=cached_selections.cbegin(); it!=cached_selections.cend(); it++) {
+    TrackReference ref(it.key().type(), it.key().index() + diff);
+
+    this->insert(ref, it.value());
+  }
+}
+
+OLIVE_NAMESPACE_EXIT