video: add fullscreen feature

Refs #74532

Change-Id: I9b436fb9d91ebb9690dd6798a0dad3b43bb1a53e

callwidget.cpp

@@ -158,8 +158,10 @@ CallWidget::findRingAccount()
 void
 CallWidget::callIncoming(Call *call)
 {
-    if (!call->account()->isAutoAnswer())
+    if (!call->account()->isAutoAnswer()) {
         ui->callInvite->setVisible(true);
+        ui->callInvite->raise();
+    }
     setActualCall(call);
 }
 

videowidget.cpp

@@ -127,3 +127,19 @@ VideoWidget::renderingStopped() {
     disconnect(renderer_, SIGNAL(stopped()),this, SLOT(renderingStopped()));
     renderer_ = nullptr;
 }
+
+void
+VideoWidget::mouseDoubleClickEvent(QMouseEvent *e) {
+    QWidget::mouseDoubleClickEvent(e);
+    if(isFullScreen()) {
+        this->setParent(oldParent_);
+        this->showNormal();
+        this->resize(oldSize_.width(), oldSize_.height());
+    } else {
+        oldSize_ = this->size();
+        oldParent_ = static_cast<QWidget*>(this->parent());
+        this->setParent(0);
+        this->showFullScreen();
+        this->show();
+    }
+}

videowidget.h

@@ -44,6 +44,8 @@ public slots:
     void frameFromDistant();
     void renderingStopped();
 
+protected slots:
+    void mouseDoubleClickEvent(QMouseEvent *e);
 private:
     Video::Renderer* previewRenderer_;
     Video::Renderer* renderer_;
@@ -51,6 +53,8 @@ private:
     QImage *distantFrame_;
     QMutex lock_;
     QPixmap *previewPix_;
+    QWidget *oldParent_;
+    QSize oldSize_;
 };
 
 #endif // VIDEOWIDGET_H