Exit video full-screen

[HW-Developer]

Hello everyone,
I am trying to make a basic media player but, i did have a problem with full screen mode for videos
when i click the fullscreen it shows the video on full screen but when i can't figure out hot to exit the fullscreen mode whene pressing escape key event or double clicked the video.
can anyone help me please!

so this my code:

void lecteur::on_bt_fullscreen_clicked(){
	if(!mVideoWidget->isFullScreen()){
		mVideoWidget->setFullScreen(true);
	}
	qDebug() << "hi there!";
}

Thank you

[mrjj]

Hi
Did you try
mVideoWidget->showNormal() ?
http://doc.qt.io/qt-5/qwidget.html#showNormal

[HW-Developer]

@mrjj Yes i know this method But how can i use it when pressing escape key or double click the video

[mrjj]

@HW-Developer
well for ESC, you would override KeyPressEvent for mVideoWidget
and respond to it. same with click.
What type is mVideoWidget ?
Its it your own child class or just plain Qt one?

[HW-Developer]

@mrjj mVideoWidget is a QVideoWidget
Can you suggest me some examples please, because i'am really a beginner in qt programming
really thank you

[mrjj]

@HW-Developer
Hi
You could subclass the QVideoWidget and use your own class instead
where you react to key and mouse.
Alternatively there is also event filters
http://doc.qt.io/qt-5/eventsandfilters.html
that allow you to do this without subclassing.

Sample of subclassing and reacting to key / mouse

#include <QKeyEvent>
#include <QVideoWidget>

class MyVideoWidget : public QVideoWidget {
 public:
  MyVideoWidget(QWidget* parent = nullptr) : QVideoWidget(parent) { }
 protected:
  virtual void mouseDoubleClickEvent(QMouseEvent* event) override {
    showNormal();
  }
  virtual void keyPressEvent(QKeyEvent* event) override {
    if ( event->key() == Qt::Key_Escape) {
      showNormal();
    }
  }
};

[HW-Developer]

@mrjj Thank you so much it works, the only problem left is that the video detach from the MainWindow.
Do you know why?

[mrjj]

@HW-Developer
Hi
On some platforms ( Windows) the video is actual an overlay and not really inside the window.
Im not sure if that is what you are seeing ?
When you say detach from mainwindow, does it show as its own window or how does it look?
Im asking as if you dont give a QWidget ( including QVideoWidget) a parent, it will become a window on its own.
(if you show the code where u create the QVideoWidget, its easy to spot if that is the issue)
Basically the difference is like
QVideoWidget *vid= new QVideoWidget;
versus
QVideoWidget *vid= new QVideoWidget(this); <<< "this" is the parent

[HW-Developer]

@mrjj this is how it shows :

[mrjj]

@HW-Developer
Super, i really think its just because your are not assigning a parent when you create it.
it then becomes a window.
So instead of replacing the other QVideoWidget you have, it just opens a (new) window.
Thats easy fixed by assigning a parent.
Did you based this off some sample i can look at ?

[HW-Developer]

@mrjj I make you a simple example, it shows the same issue:

#include "MyPlayer.h"

MyPlayer::MyPlayer(QWidget *parent)
	: QMainWindow(parent)
{
	ui.setupUi(this);
	QWidget *zoneCentrale = new QWidget;
	setCentralWidget(zoneCentrale);
	player = new QMediaPlayer(this);
	videoWidget = new MyVideoWidget(this);
	videoWidget->setGeometry(100, 100, 500, 400);
	fullScreen = new QPushButton("full-screen", this);
	layout = new QVBoxLayout();
	
	
	player->setMedia(QUrl::fromLocalFile("C:/Users/ouafa/Downloads/nature.mp4"));
	player->setVideoOutput(videoWidget);
	layout->addWidget(videoWidget);
	layout->addWidget(fullScreen);
	
	zoneCentrale->setLayout(layout);
	player->setVolume(100);
	setCentralWidget(zoneCentrale);
	
	QObject::connect(fullScreen, SIGNAL(clicked()), this, SLOT(on_bt_agrandi_clicked()));

	videoWidget->show();
	player->play();
	qDebug()<< player->isVideoAvailable();
	qDebug() << player->availableMetaData() << player->currentMedia().canonicalUrl();
}
void MyPlayer::on_bt_agrandi_clicked() {
	if (!videoWidget->isFullScreen()) {
		videoWidget->setFullScreen(true);
	}
	
	qDebug() << "hi there!";
}

[mrjj]

Hi
I could not reproduce

However, using you code 100% as is - made app crash. Not sure why.
(just tried again to be sure)

This is the code i used. i rearranged it a bit and gave zoneCentrale directly to the layout.
else its pretty much the same. Can you try this ? ( change the mp4 file ofc)

 QWidget* zoneCentrale = new QWidget;
  setCentralWidget(zoneCentrale);
  auto player = new QMediaPlayer(this);
  auto videoWidget = new QVideoWidget(this);
  player->setVideoOutput(videoWidget);

  auto fullScreen = new QPushButton("full-screen", this);
  auto layout = new QVBoxLayout(zoneCentrale);

  player->setMedia(QUrl::fromLocalFile("F:/Dropbox/_qtprojects/wontdelete/test2.mp4"));

  layout->addWidget(videoWidget);
  layout->addWidget(fullScreen);

  player->setVolume(100);

  QObject::connect(fullScreen, SIGNAL(clicked()), this, SLOT(on_bt_agrandi_clicked()));

  videoWidget->show();
  player->play();

[HW-Developer]

@mrjj It's not working, when i make the changes, i run the app and click fullscreen button, it crash, and it blocks the app

[HW-Developer]

@mrjj It's working after i verify everything, it is the escape key event, it should be setFullScreen(False) instead of showNormal();

I really thank you for your help. It was really nice
Good luck and have a good days

[mrjj]

@HW-Developer
Super.
Happy days to you too

[RakeshChitte]

@mrjj @mrjj I'm also facing same problem in Qt C++ 5.12.2 in Red Hat Enterpeise Linux 7.6.
Please give proper solution if you can...

[mrjj]

@RakeshChitte
Hi
Issue exiting fullscreen or floating window ?

[RakeshChitte]

@mrjj
existing full screen...

[mrjj]

@RakeshChitte
Hi
Welcome back.
So what happens when you call showNormal(); ?