Developer Documentation
toolBoxElement.cc
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49 
50 //== INCLUDES =================================================================
51 #include <QVBoxLayout>
52 #include <QLabel>
53 #include <QPainter>
54 #include <QMimeData>
55 #include <QDrag>
56 #include <QMouseEvent>
57 
58 #include "toolBoxElement.hh"
59 #include "parser/element.hh"
60 
61 #define BACKGROUND_RED 0x00
62 #define BACKGROUND_GREEN 0x00
63 #define BACKGROUND_BLUE 0x00
64 #define BACKGROUND_ALPHA 0xff
65 
66 //== NAMESPACES ===============================================================
67 namespace VSI {
68 
69 //=============================================================================
70 //
71 // CLASS ToolBoxElement - IMPLEMENTATION
72 //
73 //=============================================================================
74 
76 ToolBoxElement::ToolBoxElement (Element *_element, QWidget *_parent) :
77  QWidget (_parent),
78  element_ (_element)
79 {
80  QVBoxLayout *layout = new QVBoxLayout ();
81 
82  layout->setContentsMargins (2, 2, 2, 2);
83 
84  QLabel *label = new QLabel (element_->shortDescription (), this);
85 
86  label->setAlignment (Qt::AlignHCenter);
87  label->setWordWrap (true);
88 
89  QPalette p = label->palette ();
90  p.setBrush (QPalette::WindowText, Qt::white);
91  p.setBrush (QPalette::ButtonText, Qt::white);
92  label->setPalette (p);
93 
94  layout->addWidget (label);
95 
96  setToolTip (element_->longDescription ());
97 
98  setLayout (layout);
99 }
100 
101 //------------------------------------------------------------------------------
102 
105 {
106 }
107 
108 //------------------------------------------------------------------------------
109 
110 // Paint a rounded rect as background
111 void ToolBoxElement::paintEvent(QPaintEvent * /*_event*/)
112 {
113  QPainter p (this);
114  p.setRenderHint(QPainter::Antialiasing);
115 
116  p.setBrush(QBrush(QColor(BACKGROUND_RED,
117  BACKGROUND_GREEN,
118  BACKGROUND_BLUE,
119  BACKGROUND_ALPHA)));
120  p.setPen(QColor(BACKGROUND_RED + 0x30,
121  BACKGROUND_GREEN + 0x30,
122  BACKGROUND_BLUE + 0x30,
123  BACKGROUND_ALPHA));
124  p.drawRoundedRect(0, 0, width (), height (), 4, 4);
125 
126 }
127 
128 //------------------------------------------------------------------------------
129 
131 void ToolBoxElement::mousePressEvent(QMouseEvent *_event)
132 {
133  QMimeData *mimeData = new QMimeData;
134 
135  QPoint off = _event->pos() - QPoint (width () / 2, height () / 2);
136 
137  QString data = QString::number (off.x ()) + ";";
138  data += QString::number (off.y ()) + ";" + element_->name ();
139 
140  // internal mimetype
141  mimeData->setData ("application/x-openflipper.vsi",data.toLocal8Bit ());
142 
143  QDrag *drag = new QDrag(this);
144  drag->setMimeData(mimeData);
145 
146  QPixmap pixmap (size ());
147  pixmap.fill(Qt::transparent);
148 
149  render (&pixmap);
150 
151  drag->setPixmap(pixmap);
152  drag->setHotSpot(_event->pos());
153 
154  drag->exec ();
155 }
156 
157 //------------------------------------------------------------------------------
158 }
159 
const QString & shortDescription() const
Short description.
Definition: element.hh:94
void mousePressEvent(QMouseEvent *_event)
Starts drag on mouse press.
~ToolBoxElement()
Destructor.
const QString & longDescription() const
Long description.
Definition: element.hh:97
ToolBoxElement(Element *_element, QWidget *_parent=NULL)
Constructor.
QString name() const
Element name.
Definition: element.hh:88