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Affichage d'une cubiquer Python/Qt4

n°1546908
jijiz
Posté le 23-04-2007 à 10:52:15  profilanswer
 

Bonjour à tous,
 
J'éssaye d'afficher une cubique dans un QLabel contenu dans l'objet "CubicDragable". La fenêtre se lance mais rien de s'affiche.
 
Auriez vous une idée? :
 

Code :
  1. # Display a cubic
  2. class CubicDragable(QtGui.QLabel):
  3.     def __init__(self, parent=None):
  4.         super (CubicDragable, self).__init__ (parent)
  5.         # Construct the path
  6.         path = QtGui.QPainterPath()
  7.         path.cubicTo(QtCore.QPointF(0,0),QtCore.QPointF(50,50),QtCore.QPointF(0,25))
  9.         path.moveTo(-0.083695, 0.283849)
  10.         path.cubicTo(-0.049581, 0.349613, -0.012720, 0.397969, 0.026886, 0.428917)
  11.         path.cubicTo(0.066493, 0.459865, 0.111593, 0.477595, 0.162186, 0.482108)
  12.         path.lineTo(0.162186, 0.500000)
  13.         path.cubicTo(0.115929, 0.498066, 0.066565, 0.487669, 0.014094, 0.468810)       
  14.         path.cubicTo(-0.038378, 0.449952, -0.088103, 0.423839, -0.135082, 0.390474)
  15.         path.cubicTo(-0.182061, 0.357108, -0.222608, 0.321567, -0.256722, 0.283849)
  16.         path.cubicTo(-0.304712, 0.262250, -0.342874, 0.239362, -0.371206, 0.215184)
  17.         path.cubicTo(-0.411969, 0.179078, -0.443625, 0.134671, -0.466175, 0.081963)
  18.         path.cubicTo(-0.488725, 0.029255, -0.500000, -0.033043, -0.500000, -0.104932)
  19.         path.cubicTo(-0.500000, -0.218407, -0.467042, -0.312621, -0.401127, -0.387573)
  20.         path.cubicTo(-0.335212, -0.462524, -0.255421, -0.500000, -0.161752, -0.500000)
  21.         path.cubicTo(-0.072998, -0.500000, 0.003903, -0.462444, 0.068951, -0.387331)
  22.         path.cubicTo(0.133998, -0.312218, 0.166522, -0.217440, 0.166522, -0.102998)
  23.         path.cubicTo(0.166522, -0.010155, 0.143394, 0.071325, 0.097138, 0.141441)
  24.         path.cubicTo(0.050882, 0.211557, -0.009396, 0.259026, -0.083695, 0.283849)
  25.         path.moveTo(-0.167823, -0.456963)
  26.         path.cubicTo(-0.228823, -0.456963, -0.277826, -0.432624, -0.314831, -0.383946)
  27.         path.cubicTo(-0.361665, -0.323340, -0.385082, -0.230335, -0.385082, -0.104932)
  28.         path.cubicTo(-0.385082, 0.017569, -0.361376, 0.112025, -0.313964, 0.178433)
  29.         path.cubicTo(-0.277248, 0.229368, -0.228534, 0.254836, -0.167823, 0.254836)
  30.         path.cubicTo(-0.105088, 0.254836, -0.054496, 0.229368, -0.016045, 0.178433)
  31.         path.cubicTo(0.029055, 0.117827, 0.051605, 0.028691, 0.051605, -0.088975)
  32.         path.cubicTo(0.051605, -0.179562, 0.039318, -0.255803, 0.014744, -0.317698)
  33.         path.cubicTo(-0.004337, -0.365409, -0.029705, -0.400548, -0.061362, -0.423114)
  34.         path.cubicTo(-0.093018, -0.445680, -0.128505, -0.456963, -0.167823, -0.456963)
  35.         path.moveTo(0.379011, -0.404739)
  36.         path.lineTo(0.379011, -0.236460)
  37.         path.lineTo(0.486123, -0.236460)
  38.         path.lineTo(0.486123, -0.197292)
  39.         path.lineTo(0.379011, -0.197292)
  40.         path.lineTo(0.379011, 0.134913)
  41.         path.cubicTo(0.379011, 0.168117, 0.383276, 0.190442, 0.391804, 0.201886)
  42.         path.cubicTo(0.400332, 0.213330, 0.411246, 0.219052, 0.424545, 0.219052)
  43.         path.cubicTo(0.435531, 0.219052, 0.446227, 0.215264, 0.456635, 0.207689)
  44.         path.cubicTo(0.467042, 0.200113, 0.474993, 0.188910, 0.480486, 0.174081)
  45.         path.lineTo(0.500000, 0.174081)
  46.         path.cubicTo(0.488436, 0.210509, 0.471957, 0.237911, 0.450564, 0.256286)
  47.         path.cubicTo(0.429170, 0.274662, 0.407054, 0.283849, 0.384215, 0.283849)
  48.         path.cubicTo(0.368893, 0.283849, 0.353859, 0.279094, 0.339115, 0.269584)
  49.         path.cubicTo(0.324371, 0.260074, 0.313530, 0.246534, 0.306592, 0.228965)
  50.         path.cubicTo(0.299653, 0.211396, 0.296184, 0.184075, 0.296184, 0.147002)
  51.         path.lineTo(0.296184, -0.197292)
  52.         path.lineTo(0.223330, -0.197292)
  53.         path.lineTo(0.223330, -0.215667)
  54.         path.cubicTo(0.241833, -0.224049, 0.260697, -0.237992, 0.279922, -0.257495)
  55.         path.cubicTo(0.299147, -0.276999, 0.316276, -0.300129, 0.331310, -0.326886)
  56.         path.cubicTo(0.338826, -0.341070, 0.349523, -0.367021, 0.363400, -0.404739)
  57.         path.lineTo(0.379011, -0.404739)
  58.         path.moveTo(-0.535993, 0.275629)
  59.         path.closeSubpath()
  60.        
  61.         # Color 1
  62.         qCol = QtGui.QColor(60, 60, 60, 63)
  63.         # Area where the path will be drawn
  64.         image = QtGui.QImage(200, 200,
  65.                              QtGui.QImage.Format_ARGB32_Premultiplied)
  66.         # Background color of the Area "image"
  67.         image.fill(QtGui.qRgba(0, 0, 0, 0))
  68.        
  69.         # Start the painting device
  70.         painter = QtGui.QPainter()
  71.         painter.begin(image)
  72.         painter.setBrush(qCol);
  73.         painter.setPen(QtGui.QPen(qCol, 10,
  74.                                   QtCore.Qt.SolidLine, QtCore.Qt.RoundCap,
  75.                                   QtCore.Qt.RoundJoin))
  76.         # Dawing the path of our cubic
  77.         painter.drawPath(path)
  78.         # Drawing a rectangle
  79.         painter.drawRoundRect(0,10,30,10,2,2)
  80.         painter.end()
  82. # Frame wich allow to drag and drop objects contained in the frame
  83. class DragWidget(QtGui.QFrame):
  84.    
  85.     def __init__(self, parent=None):
  86.         QtGui.QFrame.__init__(self, parent)
  87.         self.setMinimumSize(200, 200)
  88.         self.setFrameStyle(QtGui.QFrame.Sunken | QtGui.QFrame.StyledPanel)
  89.         self.setAcceptDrops(True)
  90.         self.setWindowTitle(self.tr("Objets Dragables" ))
  92.         cd = CubicDragable()
  93.         cd.move(10,10)
  94.         cd.show()
  95.        
  96.          
  97.     def dragEnterEvent(self, event):
  98.         if (event.mimeData().hasFormat("application/x-dnditemdata" )):
  99.             if (event.source()==self):
  100.                 event.setDropAction(QtCore.Qt.MoveAction)
  101.                 event.accept()
  102.             else:
  103.                 event.acceptProposedAction()
  104.         else:
  105.             event.ignore()
  107.     def dropEvent(self, event):
  108.         # Getting the properties of the object dragable
  109.         # Position
  110.         pos = QtCore.QPoint(event.pos().x(), event.pos().y())
  111.      
  112.         if (event.mimeData().hasFormat("application/x-dnditemdata" )):
  113.             itemData = event.mimeData().data("application/x-dnditemdata" )
  114.             dataStream = QtCore.QDataStream(itemData, QtCore.QIODevice.ReadOnly)
  115.             # pixmap = QtGui.QPixmap(item.data(QtCore.Qt.DecorationRole))
  116.             pixmap = QtGui.QPixmap()
  117.             offset = QtCore.QPoint()
  118.            
  119.             dataStream >> pixmap >> offset
  120.            
  121.             newIcon = QtGui.QLabel(self)
  122.             newIcon.setPixmap(pixmap)
  123.             newIcon.move(event.pos() - offset)
  124.             newIcon.show()
  125.             newIcon.setAttribute(QtCore.Qt.WA_DeleteOnClose)
  128.             if (event.source() == self):
  129.                 event.setDropAction(QtCore.Qt.MoveAction)
  130.                 event.accept()
  131.             else:
  132.                 event.acceptProposedAction()
  133.                
  134.         else:
  135.             event.ignore()   
  136.        
  137.        
  138.     def mousePressEvent(self,event):
  139.         child = self.childAt(event.pos())
  140.         if (not child):
  141.             return
  142.        
  143.         pixmap = child.pixmap()
  144.         itemData = QtCore.QByteArray()   
  145.         dataStream = QtCore.QDataStream(itemData, QtCore.QIODevice.WriteOnly)
  146.         dataStream << pixmap << QtCore.QPoint(event.pos() - child.pos())
  147.        
  148.         mimeData = QtCore.QMimeData()
  149.         mimeData.setData("application/x-dnditemdata", itemData)
  150.        
  151.        
  152.         drag = QtGui.QDrag(self)
  153.         drag.setMimeData(mimeData)
  154.         drag.setPixmap(pixmap)
  155.         drag.setHotSpot(event.pos() - child.pos())
  156.        
  157.         tempPixmap = QtGui.QPixmap(pixmap)
  158.                      
  159.         child.setPixmap(tempPixmap)
  160.        
  161.         if (drag.start(QtCore.Qt.CopyAction | QtCore.Qt.MoveAction) == QtCore.Qt.MoveAction):
  162.             child.close()
  163.         else:
  164.             child.show()
  165.             child.setPixmap(pixmap) 
  166.    
  167. if __name__ == "__main__":
  168.     app = QtGui.QApplication(sys.argv)
  169.     window = DragWidget()
  170.     window.show()
  171.     sys.exit(app.exec_())

mood
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Posté le 23-04-2007 à 10:52:15  profilanswer
 


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