feat(ui/views/App/Settings/SettingsVideo): hide preview when at least on call exists

linphone-desktop/src/components/camera/CameraPreview.cpp

@@ -51,11 +51,11 @@ CameraPreviewRenderer::CameraPreviewRenderer () {
 CameraPreviewRenderer::~CameraPreviewRenderer () {
   qInfo() << QStringLiteral("Delete context info:") << mContextInfo;
 
-  CoreManager *core = CoreManager::getInstance();
+  CoreManager *coreManager = CoreManager::getInstance();
 
-  core->lockVideoRender();
-  CoreManager::getInstance()->getCore()->setNativePreviewWindowId(nullptr);
-  core->unlockVideoRender();
+  coreManager->lockVideoRender();
+  coreManager->getCore()->setNativePreviewWindowId(nullptr);
+  coreManager->unlockVideoRender();
 
   delete mContextInfo;
 }
@@ -66,10 +66,10 @@ QOpenGLFramebufferObject *CameraPreviewRenderer::createFramebufferObject (const
   format.setInternalTextureFormat(GL_RGBA8);
   format.setSamples(4);
 
-  CoreManager *core = CoreManager::getInstance();
+  CoreManager *coreManager = CoreManager::getInstance();
 
   // It's not the same thread as render.
-  core->lockVideoRender();
+  coreManager->lockVideoRender();
 
   mContextInfo->width = size.width();
   mContextInfo->height = size.height();
@@ -78,7 +78,7 @@ QOpenGLFramebufferObject *CameraPreviewRenderer::createFramebufferObject (const
 
   updateWindowId();
 
-  core->unlockVideoRender();
+  coreManager->unlockVideoRender();
 
   return new QOpenGLFramebufferObject(size, format);
 }
@@ -88,7 +88,7 @@ void CameraPreviewRenderer::render () {
   {
     QOpenGLFunctions *f = QOpenGLContext::currentContext()->functions();
 
-    f->glClearColor(0.f, 0.f, 0.f, 0.f);
+    f->glClearColor(0.f, 0.f, 0.f, 1.f);
     f->glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
 
     CoreManager *coreManager = CoreManager::getInstance();

linphone-desktop/ui/views/App/Settings/SettingsVideo.js

@@ -2,6 +2,20 @@
 // `SettingsVideo.qml` Logic.
 // =============================================================================
 
+.import Linphone 1.0 as Linphone
+
+// =============================================================================
+
 function showVideoPreview (account) {
   window.attachVirtualWindow(Qt.resolvedUrl('SettingsVideoPreview.qml'))
 }
+
+function updateVideoPreview () {
+  var count = Linphone.CallsListModel.rowCount()
+  if (count === 0) {
+    showCameraPreview.enabled = true
+  } else if (count === 1) {
+    showCameraPreview.enabled = false
+    window.detachVirtualWindow()
+  }
+}

linphone-desktop/ui/views/App/Settings/SettingsVideo.qml

@@ -108,10 +108,21 @@ TabContainer {
     }
 
     TextButtonB {
+      id: showCameraPreview
+
       anchors.right: parent.right
+      enabled: CallsListModel.rowCount() === 0
+
       text: qsTr('showCameraPreview')
 
       onClicked: Logic.showVideoPreview()
+
+      Connections {
+        target: CallsListModel
+
+        onRowsInserted: Logic.updateVideoPreview()
+        onRowsRemoved: Logic.updateVideoPreview()
+      }
     }
 
     // -------------------------------------------------------------------------