Developer Documentation

elementArea.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 //== INCLUDES =================================================================
45 #include <QGraphicsItem>
46 #include <QGraphicsSceneMouseEvent>
47
48 #include "../parser/element.hh"
49 #include "elementArea.hh"
50 #include "graphicsScene.hh"
51 #include "sceneElement.hh"
52
53 //== NAMESPACES ===============================================================
54 namespace VSI {
55
56 //=============================================================================
57 //
58 // CLASS VSI::ElementArea - IMPLEMENTATION
59 //
60 //=============================================================================
61
63 ElementArea::ElementArea (GraphicsScene *_scene) :
64 scene_ (_scene)
65 {
66 }
67
68 //------------------------------------------------------------------------------
69
71 ElementArea::~ElementArea ()
72 {
73 }
74
75 //------------------------------------------------------------------------------
76
78 QRectF ElementArea::boundingRect () const
79 {
80 return elementsBoundingRect_;
81 }
82
83 //------------------------------------------------------------------------------
84
86 void ElementArea::addElement (SceneElement *_element)
87 {
88 foreach (QGraphicsItem *e, elements_)
89 e->setSelected (false);
90
91 elements_.append (_element);
92 _element->setParentItem (this);
93 prepareGeometryChange ();
94 elementsBoundingRect_ = _element->boundingRect () | _element->childrenBoundingRect ();
95
96 _element->setSelected (true);
97 update ();
98 }
99
100 //------------------------------------------------------------------------------
101
103 bool ElementArea::removeElement (SceneElement *_element, bool _force)
104 {
105
106 if (!_force && _element->element ()->flags () & ELEMENT_FLAG_NO_DELETE)
107 return false;
108 if (elements_.contains (_element))
109 {
110 elements_.removeAll (_element);
111 _element->setParentItem (0);
112 prepareGeometryChange();
113 elementsBoundingRect_ = childrenBoundingRect();
114 return true;
115 }
116 else
117 return false;
118 }
119
120 //------------------------------------------------------------------------------
121
123 const QList<SceneElement *>& ElementArea::elements () const
124 {
125 return elements_;
126 }
127
128 //------------------------------------------------------------------------------
129 }
VSI::GraphicsScene
Definition: graphicsScene.hh:80
VSI::Element::flags
unsigned int flags() const
Flags.
Definition: element.hh:109
VSI::ElementArea::addElement
void addElement(SceneElement *_element)
Add a child element.
Definition: elementArea.cc:86
VSI::ElementArea::~ElementArea
~ElementArea()
Destructor.
Definition: elementArea.cc:71
VSI::ElementArea::boundingRect
QRectF boundingRect() const
Bounding rectangle.
Definition: elementArea.cc:78
VSI::ElementArea::ElementArea
ElementArea(GraphicsScene *_scene)
Constructor.
Definition: elementArea.cc:63
VSI::ElementArea::elements
const QList< SceneElement * > & elements() const
All elements.
Definition: elementArea.cc:123
VSI::ElementArea::removeElement
bool removeElement(SceneElement *_element, bool _force=false)
Remove an element, if its removeable or _force is set.
Definition: elementArea.cc:103
VSI
Definition: baseWidget.cc:72
VSI::SceneElement::element
Element * element() const
Context VSI::Element.
Definition: sceneElement.hh:88
VSI::SceneElement
Definition: sceneElement.hh:73