change video overlay buttons if fullscreen

the buttons back and config were shown on the overlay
in full screen. However due the the preemption of the full screen
mode, they seem to have no effect for the user, but changes the page
in background.
Thus when in full screen, these buttons are hidden.

Change-Id: Iba0bd7f5630523a7f56a932bc96cf0eb583c4266
Reviewed-by: Guillaume Roguez <guillaume.roguez@savoirfairelinux.com>

videooverlay.cpp

@@ -19,12 +19,16 @@
 #include "videooverlay.h"
 #include "ui_videooverlay.h"
 
+// Client
 #include "contactpicker.h"
 
+// LRC
 #include "callmodel.h"
 #include "contactmethod.h"
 #include "person.h"
 
+
+
 VideoOverlay::VideoOverlay(QWidget* parent) :
     QWidget(parent),
     ui(new Ui::VideoOverlay),
@@ -101,6 +105,9 @@ VideoOverlay::VideoOverlay(QWidget* parent) :
     connect(qualityDialog_, &QualityDialog::isVisible, [this] (bool visible) {
         dialogVisible_ = visible;
     });
+
+    // temporary hide
+    ui->addPersonButton->hide();
 }
 
 VideoOverlay::~VideoOverlay()
@@ -122,6 +129,17 @@ VideoOverlay::setTime(const QString& time)
     ui->timerLabel->setText(time);
 }
 
+void VideoOverlay::toggleContextButtons(bool visible)
+{
+    if (! visible) {
+        ui->videoCfgBtn->hide();
+        ui->videoBackBtn->hide();
+    } else {
+        ui->videoCfgBtn->show();
+        ui->videoBackBtn->show();
+    }
+}
+
 void
 VideoOverlay::on_hangupButton_clicked()
 {

videooverlay.h

@@ -42,6 +42,7 @@ public:
     void setName(const QString& name);
     void setTime(const QString& time);
     inline bool isDialogVisible(){ return dialogVisible_; };
+    void toggleContextButtons(bool visible);
 
 //UI SLOTS
 private slots:

videoview.cpp

@@ -185,6 +185,7 @@ VideoView::dropEvent(QDropEvent* event)
 void
 VideoView::toggleFullScreen()
 {
+    overlay_->toggleContextButtons(isFullScreen());
     if(isFullScreen()) {
         dynamic_cast<QSplitter*>(oldParent_)->insertWidget(0,this);
         this->resize(oldSize_.width(), oldSize_.height());