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//# MWCRTZoomer.cc: MultiWorldCanvas event-based zoomer
//# Copyright (C) 1999,2000,2001,2002,2003
//# Associated Universities, Inc. Washington DC, USA.
//#
//# This library is free software; you can redistribute it and/or modify it
//# under the terms of the GNU Library General Public License as published by
//# the Free Software Foundation; either version 2 of the License, or (at your
//# option) any later version.
//#
//# This library is distributed in the hope that it will be useful, but WITHOUT
//# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
//# FITNESS FOR A PARTICULAR PURPOSE. See the GNU Library General Public
//# License for more details.
//#
//# You should have received a copy of the GNU Library General Public License
//# along with this library; if not, write to the Free Software Foundation,
//# Inc., 675 Massachusetts Ave, Cambridge, MA 02139, USA.
//#
//# Correspondence concerning AIPS++ should be addressed as follows:
//# Internet email: aips2-request@nrao.edu.
//# Postal address: AIPS++ Project Office
//# National Radio Astronomy Observatory
//# 520 Edgemont Road
//# Charlottesville, VA 22903-2475 USA
//#
//# $Id$
using namespace casacore;
namespace casa { //# NAMESPACE CASA - BEGIN
MWCRTZoomer::MWCRTZoomer(Display::KeySym keysym) :
MWCRectTool(keysym) {
}
MWCRTZoomer::~MWCRTZoomer() {
}
void MWCRTZoomer::doubleInside() {
Vector<Double> linBlc, linTrc;
getLinearCoords(linBlc, linTrc);
// for "relaxed" zooming, as needed in HistogramDD, don't bother
// checking that the zoom is > 1.0, and execute the contents of
// this scope always.
if ((fabs(linBlc(0) - linTrc(0)) > (Double)0.0) &&
(fabs(linBlc(1) - linTrc(1)) > (Double)0.0)) {
for ( auto wc : itsWCList ) {
wc->setZoomRectangleLCS(linBlc, linTrc);
wc->refresh(Display::LinearCoordinateChange);
}
zoomed(linBlc, linTrc);
}
}
void MWCRTZoomer::unzoom() {
reset();
Attribute resetAtt("resetCoordinates", true);