multicam: show highlight around selected source

app/widget/multicam/multicamwidget.cpp

@@ -1,3 +1,23 @@
+/***
+
+  Olive - Non-Linear Video Editor
+  Copyright (C) 2022 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 "multicamwidget.h"
 #include "widget/nodeparamview/nodeparamviewundo.h"
 
@@ -6,14 +26,21 @@ namespace olive {
 #define super ViewerWidget
 
 MulticamWidget::MulticamWidget(QWidget *parent) :
-  super{parent},
+  super{new MulticamDisplay(), parent},
   node_(nullptr)
 {
   auto_cacher()->SetMulticamMode(true);
+  auto_cacher()->SetIgnoreCacheRequests(true);
 
   connect(display_widget(), &ViewerDisplayWidget::DragStarted, this, &MulticamWidget::DisplayClicked);
 }
 
+void MulticamWidget::SetMulticamNode(MultiCamNode *n)
+{
+  node_ = n;
+  static_cast<MulticamDisplay*>(display_widget())->SetMulticamNode(n);
+}
+
 RenderTicketPtr MulticamWidget::GetSingleFrame(const rational &t, bool dry)
 {
   if (node_) {