1 /****************************************************************************
2 **
3 ** This file is part of the LibreCAD project, a 2D CAD program
4 **
5 ** Copyright (C) 2010 R. van Twisk (librecad@rvt.dds.nl)
6 ** Copyright (C) 2001-2003 RibbonSoft. All rights reserved.
7 **
8 **
9 ** This file may be distributed and/or modified under the terms of the
10 ** GNU General Public License version 2 as published by the Free Software
11 ** Foundation and appearing in the file gpl-2.0.txt included in the
12 ** packaging of this file.
13 **
14 ** This program is distributed in the hope that it will be useful,
15 ** but WITHOUT ANY WARRANTY; without even the implied warranty of
16 ** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
17 ** GNU General Public License for more details.
18 **
19 ** You should have received a copy of the GNU General Public License
20 ** along with this program; if not, write to the Free Software
21 ** Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
22 **
23 ** This copyright notice MUST APPEAR in all copies of the script!
24 **
25 **********************************************************************/
26 
27 
28 #ifndef RS_EVENTHANDLER_H
29 #define RS_EVENTHANDLER_H
30 
31 #include <QObject>
32 
33 #include "rs_vector.h"
34 
35 class RS_ActionInterface;
36 class QAction;
37 class QMouseEvent;
38 class QKeyEvent;
39 class RS_CommandEvent;
40 class RS_Vector;
41 
42 struct RS_SnapMode;
43 
44 /**
45  * The event handler owns and manages all actions that are currently
46  * active. All events going from the view to the actions come over
47  * this class.
48  */
49 class RS_EventHandler : public QObject
50 {
51     Q_OBJECT
52 
53 public:
54     RS_EventHandler(QObject* parent = 0);
55     ~RS_EventHandler();
56 
57     void setQAction(QAction* action);
58 
59     void back();
60     void enter();
61 
62     void mousePressEvent(QMouseEvent *e);
63     void mouseReleaseEvent(QMouseEvent *e);
64     void mouseMoveEvent(QMouseEvent *e);
65     void mouseLeaveEvent();
66     void mouseEnterEvent();
67 
68     void keyPressEvent(QKeyEvent* e);
69     void keyReleaseEvent(QKeyEvent* e);
70 
71     void commandEvent(RS_CommandEvent* e);
72     void enableCoordinateInput();
73     void disableCoordinateInput();
74 
75     void setDefaultAction(RS_ActionInterface* action);
76 	RS_ActionInterface* getDefaultAction() const;
77 
78     void setCurrentAction(RS_ActionInterface* action);
79 	RS_ActionInterface* getCurrentAction();
80 	bool isValid(RS_ActionInterface* action) const;
81 
82     void killSelectActions();
83     void killAllActions();
84 
85     bool hasAction();
86     void cleanUp();
87 	void debugActions() const;
88     void setSnapMode(RS_SnapMode sm);
89     void setSnapRestriction(RS2::SnapRestriction sr);
90 
91     //! return true if the current action is for selecting
92     bool inSelectionMode();
93 
94 private:
95 
96 	QAction* q_action{nullptr};
97 	RS_ActionInterface* defaultAction{nullptr};
98 	QList<RS_ActionInterface*> currentActions;
99 	bool coordinateInputEnabled{true};
100     RS_Vector relative_zero;
101 
102 public slots:
103     void setRelativeZero(const RS_Vector&);
104 };
105 
106 #endif
107