Play/Pause QPushButton

I am attempting to add a "Play/Pause" QPushButton for a tile morphing app. My issue is that this button should have two functions in itself (play/pause).

How would I go about adding the pause functionality? My current code has the play function working:

GLWidget.cpp

Code:

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void GLWidget::s_play()
{
    m_flagScale = 1;
    m_flagCentroid = 1;
    m_flagRotate = 1;
}

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MainWindow.cpp

Code:

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connect(m_load,       SIGNAL(clicked()),              this,  SLOT(s_loadTiles()));
    connect(m_scale,      SIGNAL(stateChanged(int)), m_glwidget, SLOT(s_setScale(int)));
    connect(m_rotate,    SIGNAL(stateChanged(int)), m_glwidget, SLOT(s_setRotate(int)));
    connect(m_centroid, SIGNAL(stateChanged(int)), m_glwidget, SLOT(s_setCentroid(int)));
    connect(m_play,      SIGNAL(clicked()),               m_glwidget, SLOT(s_play()));

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Thank for the help in advance!

What about something like this

Code:

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void GLWidget::switch_play_state()
{
    if (m_isPaused == false )
        this->s_pause(); // sets m_isPaused=true;
    else
        this->s_play(); // sets m_isPaused=false;
}
 
//
 
connect(m_play,      SIGNAL(clicked()),               m_glwidget, SLOT(switch_play_state()));

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