PolygonAcquire.h
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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 /*!
21  \file terralib/qt/widgets/tools/PolygonAcquire.h
22 
23  \brief This class implements a concrete tool to acquire a polygon geometry
24 */
25 
26 #ifndef __TERRALIB_QT_WIDGETS_INTERNAL_POLYGONACQUIRE_H
27 #define __TERRALIB_QT_WIDGETS_INTERNAL_POLYGONACQUIRE_H
28 
29 // TerraLib
30 #include "../../../geometry/Coord2D.h"
31 #include "../../../geometry/Polygon.h"
32 #include "../Config.h"
33 #include "AbstractTool.h"
34 
35 // Qt
36 #include <QPainterPath>
37 #include <QPen>
38 
39 // STL
40 #include <vector>
41 #include <string>
42 
43 namespace te
44 {
45  namespace qt
46  {
47  namespace widgets
48  {
49 // Forward declarations
50  class Canvas;
51  class MapDisplay;
52 
53  /*!
54  \class PolygonAcquire
55 
56  \brief This class implements a concrete tool to acquire a polygon geometry
57  */
59  {
60  Q_OBJECT
61 
62  public:
63 
64  /** @name Initializer Methods
65  * Methods related to instantiation and destruction.
66  */
67  //@{
68 
69  /*!
70  \brief It constructs a PolygonAcquire tool associated with the given map display.
71 
72  \param display The map display associated with the tool.
73  \param parent The tool's parent.
74 
75  \note The tool will NOT take the ownership of the given pointers.
76  */
77  PolygonAcquire(MapDisplay* display, QObject* parent = 0);
78 
79  /*! \brief Destructor. */
80  ~PolygonAcquire();
81 
82  //@}
83 
84  /** @name AbstractTool Methods
85  * Methods related with tool behavior.
86  */
87  //@{
88 
89  bool mousePressEvent(QMouseEvent* e);
90 
91  bool mouseMoveEvent(QMouseEvent* e);
92 
93  bool mouseReleaseEvent(QMouseEvent* e);
94 
95  bool mouseDoubleClickEvent(QMouseEvent* e);
96 
97  //@}
98 
99  private:
100 
101  void drawGeometry();
102 
103  void drawLine(Canvas& canvas);
104 
105  void drawPolygon(Canvas& canvas);
106 
107  void clear();
108 
109  private slots:
110 
111  void onExtentChanged();
112 
113  signals:
114 
115  void polygonAquired(te::gm::Polygon* poly);
116 
117  protected:
118 
119  std::vector<te::gm::Coord2D> m_coords; //!< The coord list managed by the measure tool.
120  te::gm::Coord2D m_lastPos; //!< The last position captured on mouse move event.
121  QPen m_pen; //!< The pen used to draw the path.
122  QBrush m_brush; //!< The brush used to draw the path.
123  bool m_isFinished; //!< A flag that indicates if the operations was finished.
124  };
125 
126  } // end namespace widgets
127  } // end namespace qt
128 } // end namespace te
129 
130 #endif // __TERRALIB_QT_WIDGETS_INTERNAL_POLYGONACQUIRE_H
Abstract tool concept.
QPen m_pen
The pen used to draw the path.
A widget to control the display of a set of layers.
Definition: MapDisplay.h:66
An utility struct for representing 2D coordinates.
Definition: Coord2D.h:40
This class defines an interface for objects that can receive application events and respond to them...
Definition: AbstractTool.h:62
This class implements a concrete tool to acquire a polygon geometry.
URI C++ Library.
QBrush m_brush
The brush used to draw the path.
A canvas built on top of Qt.
Definition: Canvas.h:54
te::gm::Coord2D m_lastPos
The last position captured on mouse move event.
Polygon is a subclass of CurvePolygon whose rings are defined by linear rings.
Definition: Polygon.h:50
bool m_isFinished
A flag that indicates if the operations was finished.
#define TEQTWIDGETSEXPORT
You can use this macro in order to export/import classes and functions from this module.
Definition: Config.h:63
std::vector< te::gm::Coord2D > m_coords
The coord list managed by the measure tool.