mirror of https://github.com/CGAL/cgal
83 lines
2.0 KiB
C++
83 lines
2.0 KiB
C++
// Copyright (c) 2002-2004 INRIA Sophia-Antipolis (France).
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// All rights reserved.
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//
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// This file is part of CGAL (www.cgal.org); you can redistribute it and/or
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// modify it under the terms of the GNU Lesser General Public License as
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// published by the Free Software Foundation; either version 3 of the License,
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// or (at your option) any later version.
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//
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// Licensees holding a valid commercial license may use this file in
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// accordance with the commercial license agreement provided with the software.
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//
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// This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
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// WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
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//
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// $URL$
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// $Id$
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//
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//
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// Author(s) : Laurent Rineau
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#ifndef CGAL_QT_WIDGET_GET_POINT_H
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#define CGAL_QT_WIDGET_GET_POINT_H
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#include <CGAL/IO/Qt_widget.h>
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#include <CGAL/IO/Qt_widget_layer.h>
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#include <qcursor.h>
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#ifndef CGAL_QT_WIDGET_GET_POINT_BUTTON
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#define CGAL_QT_WIDGET_GET_POINT_BUTTON Qt::LeftButton
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#endif
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namespace CGAL {
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template <class R>
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class Qt_widget_get_point : public Qt_widget_layer
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{
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public:
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typedef typename R::Point_2 Point;
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typedef typename R::FT FT;
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Qt_widget_get_point(const QCursor c=QCursor(Qt::crossCursor),
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QObject* parent = 0, const char* name = 0) :
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Qt_widget_layer(parent, name), cursor(c) {};
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protected:
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bool is_pure(Qt::ButtonState s){
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if((s & Qt::ControlButton) ||
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(s & Qt::ShiftButton) ||
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(s & Qt::AltButton))
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return 0;
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else
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return 1;
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}
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void mousePressEvent(QMouseEvent *e)
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{
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if(e->button() == CGAL_QT_WIDGET_GET_POINT_BUTTON
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&& is_pure(e->state()))
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{
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FT x, y;
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widget->x_real(e->x(), x);
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widget->y_real(e->y(), y);
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widget->new_object(make_object(Point(x, y)));
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}
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};
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void activating()
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{
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oldcursor = widget->cursor();
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widget->setCursor(cursor);
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};
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void deactivating()
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{
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widget->setCursor(oldcursor);
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};
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QCursor cursor;
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QCursor oldcursor;
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};
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} // namespace CGAL
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#endif // CGAL_QT_WIDGET_GET_POINT_H
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