Affichage d'une cubiquer Python/Qt4

Marsh Posté le 23-04-2007 à 10:52:15

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 :

# Display a cubic
class CubicDragable(QtGui.QLabel):
def __init__(self, parent=None):
super (CubicDragable, self).__init__ (parent)
# Construct the path
path = QtGui.QPainterPath()
path.cubicTo(QtCore.QPointF(0,0),QtCore.QPointF(50,50),QtCore.QPointF(0,25))
path.moveTo(-0.083695, 0.283849)
path.cubicTo(-0.049581, 0.349613, -0.012720, 0.397969, 0.026886, 0.428917)
path.cubicTo(0.066493, 0.459865, 0.111593, 0.477595, 0.162186, 0.482108)
path.lineTo(0.162186, 0.500000)
path.cubicTo(0.115929, 0.498066, 0.066565, 0.487669, 0.014094, 0.468810)
path.cubicTo(-0.038378, 0.449952, -0.088103, 0.423839, -0.135082, 0.390474)
path.cubicTo(-0.182061, 0.357108, -0.222608, 0.321567, -0.256722, 0.283849)
path.cubicTo(-0.304712, 0.262250, -0.342874, 0.239362, -0.371206, 0.215184)
path.cubicTo(-0.411969, 0.179078, -0.443625, 0.134671, -0.466175, 0.081963)
path.cubicTo(-0.488725, 0.029255, -0.500000, -0.033043, -0.500000, -0.104932)
path.cubicTo(-0.500000, -0.218407, -0.467042, -0.312621, -0.401127, -0.387573)
path.cubicTo(-0.335212, -0.462524, -0.255421, -0.500000, -0.161752, -0.500000)
path.cubicTo(-0.072998, -0.500000, 0.003903, -0.462444, 0.068951, -0.387331)
path.cubicTo(0.133998, -0.312218, 0.166522, -0.217440, 0.166522, -0.102998)
path.cubicTo(0.166522, -0.010155, 0.143394, 0.071325, 0.097138, 0.141441)
path.cubicTo(0.050882, 0.211557, -0.009396, 0.259026, -0.083695, 0.283849)
path.moveTo(-0.167823, -0.456963)
path.cubicTo(-0.228823, -0.456963, -0.277826, -0.432624, -0.314831, -0.383946)
path.cubicTo(-0.361665, -0.323340, -0.385082, -0.230335, -0.385082, -0.104932)
path.cubicTo(-0.385082, 0.017569, -0.361376, 0.112025, -0.313964, 0.178433)
path.cubicTo(-0.277248, 0.229368, -0.228534, 0.254836, -0.167823, 0.254836)
path.cubicTo(-0.105088, 0.254836, -0.054496, 0.229368, -0.016045, 0.178433)
path.cubicTo(0.029055, 0.117827, 0.051605, 0.028691, 0.051605, -0.088975)
path.cubicTo(0.051605, -0.179562, 0.039318, -0.255803, 0.014744, -0.317698)
path.cubicTo(-0.004337, -0.365409, -0.029705, -0.400548, -0.061362, -0.423114)
path.cubicTo(-0.093018, -0.445680, -0.128505, -0.456963, -0.167823, -0.456963)
path.moveTo(0.379011, -0.404739)
path.lineTo(0.379011, -0.236460)
path.lineTo(0.486123, -0.236460)
path.lineTo(0.486123, -0.197292)
path.lineTo(0.379011, -0.197292)
path.lineTo(0.379011, 0.134913)
path.cubicTo(0.379011, 0.168117, 0.383276, 0.190442, 0.391804, 0.201886)
path.cubicTo(0.400332, 0.213330, 0.411246, 0.219052, 0.424545, 0.219052)
path.cubicTo(0.435531, 0.219052, 0.446227, 0.215264, 0.456635, 0.207689)
path.cubicTo(0.467042, 0.200113, 0.474993, 0.188910, 0.480486, 0.174081)
path.lineTo(0.500000, 0.174081)
path.cubicTo(0.488436, 0.210509, 0.471957, 0.237911, 0.450564, 0.256286)
path.cubicTo(0.429170, 0.274662, 0.407054, 0.283849, 0.384215, 0.283849)
path.cubicTo(0.368893, 0.283849, 0.353859, 0.279094, 0.339115, 0.269584)
path.cubicTo(0.324371, 0.260074, 0.313530, 0.246534, 0.306592, 0.228965)
path.cubicTo(0.299653, 0.211396, 0.296184, 0.184075, 0.296184, 0.147002)
path.lineTo(0.296184, -0.197292)
path.lineTo(0.223330, -0.197292)
path.lineTo(0.223330, -0.215667)
path.cubicTo(0.241833, -0.224049, 0.260697, -0.237992, 0.279922, -0.257495)
path.cubicTo(0.299147, -0.276999, 0.316276, -0.300129, 0.331310, -0.326886)
path.cubicTo(0.338826, -0.341070, 0.349523, -0.367021, 0.363400, -0.404739)
path.lineTo(0.379011, -0.404739)
path.moveTo(-0.535993, 0.275629)
path.closeSubpath()
# Color 1
qCol = QtGui.QColor(60, 60, 60, 63)
# Area where the path will be drawn
image = QtGui.QImage(200, 200,
QtGui.QImage.Format_ARGB32_Premultiplied)
# Background color of the Area "image"
image.fill(QtGui.qRgba(0, 0, 0, 0))
# Start the painting device
painter = QtGui.QPainter()
painter.begin(image)
painter.setBrush(qCol);
painter.setPen(QtGui.QPen(qCol, 10,
QtCore.Qt.SolidLine, QtCore.Qt.RoundCap,
QtCore.Qt.RoundJoin))
# Dawing the path of our cubic
painter.drawPath(path)
# Drawing a rectangle
painter.drawRoundRect(0,10,30,10,2,2)
painter.end()
# Frame wich allow to drag and drop objects contained in the frame
class DragWidget(QtGui.QFrame):
def __init__(self, parent=None):
QtGui.QFrame.__init__(self, parent)
self.setMinimumSize(200, 200)
self.setFrameStyle(QtGui.QFrame.Sunken | QtGui.QFrame.StyledPanel)
self.setAcceptDrops(True)
self.setWindowTitle(self.tr("Objets Dragables" ))
cd = CubicDragable()
cd.move(10,10)
cd.show()
def dragEnterEvent(self, event):
if (event.mimeData().hasFormat("application/x-dnditemdata" )):
if (event.source()==self):
event.setDropAction(QtCore.Qt.MoveAction)
event.accept()
else:
event.acceptProposedAction()
else:
event.ignore()
def dropEvent(self, event):
# Getting the properties of the object dragable
# Position
pos = QtCore.QPoint(event.pos().x(), event.pos().y())
if (event.mimeData().hasFormat("application/x-dnditemdata" )):
itemData = event.mimeData().data("application/x-dnditemdata" )
dataStream = QtCore.QDataStream(itemData, QtCore.QIODevice.ReadOnly)
# pixmap = QtGui.QPixmap(item.data(QtCore.Qt.DecorationRole))
pixmap = QtGui.QPixmap()
offset = QtCore.QPoint()
dataStream >> pixmap >> offset
newIcon = QtGui.QLabel(self)
newIcon.setPixmap(pixmap)
newIcon.move(event.pos() - offset)
newIcon.show()
newIcon.setAttribute(QtCore.Qt.WA_DeleteOnClose)
if (event.source() == self):
event.setDropAction(QtCore.Qt.MoveAction)
event.accept()
else:
event.acceptProposedAction()
else:
event.ignore()
def mousePressEvent(self,event):
child = self.childAt(event.pos())
if (not child):
return
pixmap = child.pixmap()
itemData = QtCore.QByteArray()
dataStream = QtCore.QDataStream(itemData, QtCore.QIODevice.WriteOnly)
dataStream << pixmap << QtCore.QPoint(event.pos() - child.pos())
mimeData = QtCore.QMimeData()
mimeData.setData("application/x-dnditemdata", itemData)
drag = QtGui.QDrag(self)
drag.setMimeData(mimeData)
drag.setPixmap(pixmap)
drag.setHotSpot(event.pos() - child.pos())
tempPixmap = QtGui.QPixmap(pixmap)
child.setPixmap(tempPixmap)
if (drag.start(QtCore.Qt.CopyAction | QtCore.Qt.MoveAction) == QtCore.Qt.MoveAction):
child.close()
else:
child.show()
child.setPixmap(pixmap)
if __name__ == "__main__":
app = QtGui.QApplication(sys.argv)
window = DragWidget()
window.show()
sys.exit(app.exec_())

Marsh Posté le 23-04-2007 à 10:52:15

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