connect(m_zoomSlider, SIGNAL(valueChanged(int)), this, SLOT(setZoomLevel(int)));
connect(m_zoomSlider, SIGNAL(sliderMoved(int)), this, SLOT(showZoomSliderToolTip(int)));
connect(m_view, SIGNAL(zoomLevelChanged(int)), m_zoomSlider, SLOT(setValue(int)));
connect(m_zoomOut, SIGNAL(clicked()), this, SLOT(zoomOut()));
connect(m_zoomIn, SIGNAL(clicked()), this, SLOT(zoomIn()));
connect(m_zoomSlider, SIGNAL(valueChanged(int)), this, SLOT(setZoomLevel(int)));
connect(m_zoomSlider, SIGNAL(sliderMoved(int)), this, SLOT(showZoomSliderToolTip(int)));
connect(m_view, SIGNAL(zoomLevelChanged(int)), m_zoomSlider, SLOT(setValue(int)));
connect(m_zoomOut, SIGNAL(clicked()), this, SLOT(zoomOut()));
connect(m_zoomIn, SIGNAL(clicked()), this, SLOT(zoomIn()));