Publishing/Subscribing from/to Qt GUI to ROS

asked 2014-12-17 16:06:07 -0500

MKI gravatar image

updated 2014-12-17 16:10:25 -0500

Hi,

I am working on qt based GUI tool that I found in ROS wiki. As I understand, this package provides the basic requirement to interface Qt to ROS by means of a QNode class (a Thread). This package template, publishes chatter topic by means of the QNode Thread, using the run method. so my question is, how can one publish/subscribe values from Qt elements like a qSlider, qButton, qLineEdit, qProgressBar... etc to ROS? I am not very familiar with Thread programming, How can I pass these values to the QNode Thread...? PFB is portion of code to get an Idea:

    /*********************
    ** Logging
    **********************/
    ui.view_logging->setModel(qnode.loggingModel());
    QObject::connect(&qnode, SIGNAL(loggingUpdated()), this, SLOT(updateLoggingView()));

/*********************
** Auto Start
**********************/
if ( ui.checkbox_remember_settings->isChecked() ) {
    on_button_connect_clicked(true);
}

/*********************
**

Values That I need to publish

**********************/
ui.linearVelprogressBar->setValue(ui.linearVelhorizontalSlider->value());
ui.angularVelprogressBar->setValue(ui.angularVeldial->value());

connect(ui.linearVelhorizontalSlider,SIGNAL(valueChanged(int)),ui.linearVelprogressBar,SLOT(setValue(int)));
connect(ui.angularVeldial,SIGNAL(valueChanged(int)),ui.angularVelprogressBar,SLOT(setValue(int)));

here is sample GUI...image description

If anyone has worked on this, Please give me an Idea to perform the above... Thanks in advance.

Murali

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Comments

This is what i'm looking for. Did you get the answer?

nouf gravatar imagenouf ( 2015-02-18 06:20:18 -0500 )edit

I was not able to find a solution with qt and C++; so I switched over to GLADE+gtk+python for GUI development, it is relatively simpler to understand and quicker to code. There are some issues with this method too ( ~ similar to the one mentioned above); will post the link shortly.

MKI gravatar imageMKI ( 2015-02-26 08:20:19 -0500 )edit