Developer Documentation

QtBaseViewerDragDrop.cc
1 /*===========================================================================*\
2 * *
3 * OpenFlipper *
4 * Copyright (c) 2001-2015, RWTH-Aachen University *
5 * Department of Computer Graphics and Multimedia *
6 * All rights reserved. *
7 * www.openflipper.org *
8 * *
9 *---------------------------------------------------------------------------*
10 * This file is part of OpenFlipper. *
11 *---------------------------------------------------------------------------*
12 * *
13 * Redistribution and use in source and binary forms, with or without *
14 * modification, are permitted provided that the following conditions *
15 * are met: *
16 * *
17 * 1. Redistributions of source code must retain the above copyright notice, *
18 * this list of conditions and the following disclaimer. *
19 * *
20 * 2. Redistributions in binary form must reproduce the above copyright *
21 * notice, this list of conditions and the following disclaimer in the *
22 * documentation and/or other materials provided with the distribution. *
23 * *
24 * 3. Neither the name of the copyright holder nor the names of its *
25 * contributors may be used to endorse or promote products derived from *
26 * this software without specific prior written permission. *
27 * *
28 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS *
29 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED *
30 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A *
31 * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER *
32 * OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, *
33 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, *
34 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR *
35 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF *
36 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING *
37 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS *
38 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. *
39 * *
40 \*===========================================================================*/
41
42
43
44
45
46 //=============================================================================
47 //
48 // CLASS QtBaseViewer - IMPLEMENTATION
49 //
50 //=============================================================================
51
52
53 //== INCLUDES =================================================================
54
55 #include "QtBaseViewer.hh"
56 #include <QDrag>
57 #include <QMimeData>
58
59 //== NAMESPACES ===============================================================
60
61 namespace ACG {
62 namespace QtWidgets {
63
64
65 //== IMPLEMENTATION ==========================================================
66
67 void QtBaseViewer::startDrag()
68 {
69 QString view;
70 encodeView(view);
71
72 QDrag * drag = new QDrag( this );
73 QMimeData * mime_data = new QMimeData();
74
75 mime_data->setText( view );
76 drag->setMimeData( mime_data );
77 drag->start();
78 }
79
80
81 void QtBaseViewer::glDragEnterEvent(QDragEnterEvent* _event)
82 {
83 if ( externalDrag_ ) {
84 emit dragEnterEvent(_event);
85 } else {
86 if ( _event->mimeData()->hasFormat("text/plain") )
87 _event->acceptProposedAction();
88 }
89 }
90
91
92 void QtBaseViewer::glDropEvent(QDropEvent* _event)
93 {
94 if ( externalDrag_ ) {
95 emit dropEvent( _event );
96 } else {
97 if ( _event->source() != this )
98 {
99 QString view( _event->mimeData()->text() );
100 decodeView(view);
101 _event->acceptProposedAction();
102 }
103 }
104 }
105
106 //=============================================================================
107 } // namespace QtWidgets
108 } // namespace ACG
109 //=============================================================================
ACG::QtWidgets::QtBaseViewer::dropEvent
void dropEvent(QDropEvent *_event)
ACG
Namespace providing different geometric functions concerning angles.
Definition: BaseObjectData.hh:68
ACG::QtWidgets::QtBaseViewer::dragEnterEvent
void dragEnterEvent(QDragEnterEvent *_event)
ACG::QtWidgets::QtBaseViewer::startDrag
virtual void startDrag()
drag & drop for modelview copying
Definition: QtBaseViewerDragDrop.cc:67
ACG::QtWidgets::QtBaseViewer::encodeView
void encodeView(QString &_view)
convert current view to text representation
Definition: QtBaseViewer.cc:1323
ACG::QtWidgets::QtBaseViewer::externalDrag_
bool externalDrag_
Definition: QtBaseViewer.hh:1061
ACG::QtWidgets::QtBaseViewer::glDropEvent
virtual void glDropEvent(QDropEvent *_event)
drag & drop for modelview copying
Definition: QtBaseViewerDragDrop.cc:92
ACG::QtWidgets::QtBaseViewer::decodeView
bool decodeView(const QString &_view)
Definition: QtBaseViewer.cc:1350
ACG::QtWidgets::QtBaseViewer::glDragEnterEvent
virtual void glDragEnterEvent(QDragEnterEvent *_event)
drag & drop for modelview copying
Definition: QtBaseViewerDragDrop.cc:81