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ViewZoomClick.cpp
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1 /* Copyright (C) 2008 National Institute For Space Research (INPE) - Brazil.
2 
3  This file is part of the TerraLib - a Framework for building GIS enabled applications.
4 
5  TerraLib is free software: you can redistribute it and/or modify
6  it under the terms of the GNU Lesser General Public License as published by
7  the Free Software Foundation, either version 3 of the License,
8  or (at your option) any later version.
9 
10  TerraLib is distributed in the hope that it will be useful,
11  but WITHOUT ANY WARRANTY; without even the implied warranty of
12  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13  GNU Lesser General Public License for more details.
14 
15  You should have received a copy of the GNU Lesser General Public License
16  along with TerraLib. See COPYING. If not, write to
17  TerraLib Team at <terralib-team@terralib.org>.
18  */
19 
20 // TerraLib
21 #include "ViewZoomClick.h"
22 #include "../../../../geometry/Envelope.h"
23 #include "../View.h"
24 #include "../Scene.h"
25 #include "../../../core/pattern/singleton/Context.h"
26 
27 // Qt
28 #include <QtGui/QMouseEvent>
29 
30 te::layout::ViewZoomClick::ViewZoomClick(View* view, const QCursor& cursor, const double& zoomFactor, const ViewZoomType& type, QObject* parent)
31  : ViewZoom(view, zoomFactor, type, parent)
32 {
33  setCursor(cursor);
34 }
35 
37 {
38 }
39 
41 {
42  if(e->button() != Qt::LeftButton)
43  return false;
44 
45  QPointF pt(e->pos());
46  applyZoom(pt);
47 
48  return true;
49 }
virtual void setCursor(const QCursor &cursor)
It sets the tool cursor.
Class representing the view. This view is child of QGraphicsView, part of Graphics View Framework...
Definition: View.h:89
bool mousePressEvent(QMouseEvent *e)
This event handler can be reimplemented in a concrete tool class to receive mouse press events for th...
ViewZoomType
Defines the zoom type.
Definition: ViewZoom.h:50
ViewZoomClick(View *view, const QCursor &cursor, const double &zoomFactor=2.0, const ViewZoomType &type=TypeIn, QObject *parent=0)
It constructs a zoom click tool associated with the given map display.