Developer Documentation

trash.cc
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40 \*===========================================================================*/
41
42
43
44 //== INCLUDES =================================================================
45 #include <QPixmap>
46 #include <QGraphicsItem>
47 #include <QGraphicsSceneMouseEvent>
48
49 #include <OpenFlipper/common/GlobalOptions.hh>
50
51 #include "trash.hh"
52 #include "graphicsScene.hh"
53 #include "sceneElement.hh"
54
55 //== NAMESPACES ===============================================================
56 namespace VSI {
57
58 //=============================================================================
59 //
60 // CLASS VSI::Trash - IMPLEMENTATION
61 //
62 //=============================================================================
63
64
66 Trash::Trash (GraphicsScene *_scene, QGraphicsItem *_parent) :
67 QGraphicsPixmapItem (_parent),
68 scene_ (_scene)
69 {
70 setPixmap (OpenFlipper::Options::iconDirStr()+OpenFlipper::Options::dirSeparator()+"user-trash.png");
71
72 setOpacity (0.4);
73
74 setAcceptHoverEvents (true);
75 }
76
77 //------------------------------------------------------------------------------
78
80 Trash::~Trash ()
81 {
82 }
83
84 //------------------------------------------------------------------------------
85
86 // make the trash opaque if mouse is over and we have selected elements
87 void Trash::hoverEnterEvent (QGraphicsSceneHoverEvent * /*_event*/)
88 {
89 if (!scene_->selectedItems ().isEmpty ())
90 setOpacity (1.0);
91 }
92
93 //------------------------------------------------------------------------------
94
95 // make trash transparent on mouse leave
96 void Trash::hoverLeaveEvent (QGraphicsSceneHoverEvent * /*_event*/)
97 {
98 setOpacity (0.4);
99 }
100
101 //------------------------------------------------------------------------------
102
103 // delete selected elements on mouse press
104 void Trash::mousePressEvent (QGraphicsSceneMouseEvent * /*_event*/)
105 {
106 if (!scene_->selectedItems ().isEmpty ())
107 foreach (QGraphicsItem *e, scene_->selectedItems ())
108 {
109 SceneElement *se = dynamic_cast<SceneElement *> (e);
110 if (se && scene_->removeElement (se))
111 delete se;
112 }
113 }
114
115 //------------------------------------------------------------------------------
116
118 void Trash::activate ()
119 {
120 setOpacity (1.0);
121 }
122
123 //------------------------------------------------------------------------------
124
126 void Trash::deactivate ()
127 {
128 setOpacity (0.4);
129 }
130
131 //------------------------------------------------------------------------------
132
134 void Trash::setGeometry (const QRectF &_rect)
135 {
136 QGraphicsPixmapItem::setPos (_rect.topLeft ());
137 QGraphicsLayoutItem::setGeometry (_rect);
138 }
139
140 //------------------------------------------------------------------------------
141
142 // size information for layouting
143 QSizeF Trash::sizeHint (Qt::SizeHint _which, const QSizeF &/*_constraint*/) const
144 {
145 QSizeF sh;
146 switch (_which) {
147 case Qt::MinimumSize:
148 case Qt::PreferredSize:
149 case Qt::MaximumSize:
150 sh = QSizeF (pixmap ().width (), pixmap ().height ());
151 break;
152 default:
153 break;
154 }
155
156 return sh;
157 }
158
159 //------------------------------------------------------------------------------
160 }
VSI::GraphicsScene
Definition: graphicsScene.hh:80
VSI::Trash::deactivate
void deactivate()
Makes the trash transparent (will be called of an element is moved away from this widget) ...
Definition: trash.cc:126
GlobalOptions.hh
VSI::Trash::activate
void activate()
Makes the trash opaque (will be called of an element is moved above this widget)
Definition: trash.cc:118
VSI::GraphicsScene::removeElement
bool removeElement(SceneElement *_element)
Remove the element from the scene.
Definition: graphicsScene.cc:309
VSI::Trash::setGeometry
virtual void setGeometry(const QRectF &_rect)
Sets the geometry.
Definition: trash.cc:134
VSI::Trash::Trash
Trash(GraphicsScene *_scene, QGraphicsItem *_parent)
Constructor.
Definition: trash.cc:66
VSI
Definition: baseWidget.cc:72
VSI::Trash::~Trash
~Trash()
Destructor.
Definition: trash.cc:80
VSI::SceneElement
Definition: sceneElement.hh:73