Drag and Drop objets Label dans un QFrame

Marsh Posté le 14-05-2007 à 10:02:25

Bonjour à tous et à toutes,

Je veux créer Une zone QFrame dans laqulle je rajoute des formes qui doivent supporter le glisser déposer.

Voici comment j'ai procédé :

++Mes objets que je vais pouvoir glisser déplacer dans ma QFrame :
-class ImageDragable(QtGui.QLabel,object)
-class SquareDragable(QtGui.QLabel,object)
-class CubicDragable(QtGui.QLabel,object)
-class SquareBox(QtGui.QLabel,object)

++Ma QFrame :
-class DragWidget(QtGui.QFrame,object)
exemple :

Code :

dp = SquareDragable(4, 3, "Ben la c'est le nom de la boite", self)
dp.move(30, 30)
dp.show()

Lorsque je définis les fonctions dragEnterEvent dropEvent mousePressEvent dans la QFrame tous mes objets sont soummis à ces fonctions et ça marche ! Je souhaiterais définir ces 3 méthodes dans chacun des objets image, cubic, square et suqarebox, seulement ceci ne marche pas...

Voici le code :

Code :

from PyQt4 import QtGui, QtCore
import draggableicons_rc, sys
# Display a cubic
class SquareBox(QtGui.QLabel,object):
def __init__(self, QP1, parent=None):
super (SquareBox, self).__init__ (parent)
self.setAcceptDrops(True)
image = QtGui.QImage(QP1.x(), QP1.y(),
QtGui.QImage.Format_ARGB32_Premultiplied)
self.rect = QtCore.QRectF(QtCore.QPointF(0.,0.), QtCore.QSizeF(QP1.x(),QP1.y()))
# Drawing the main rectangle
painter = QtGui.QPainter()
painter.begin(image)
painter.setRenderHint(QtGui.QPainter.Antialiasing)
painter.setPen(QtCore.Qt.black)
painter.drawLine(QtCore.QPointF(0,0),QtCore.QPointF(QP1.x(),0))
painter.drawLine(QtCore.QPointF(QP1.x(),0),QP1)
painter.drawLine(QtCore.QPointF(0,QP1.y()),QP1)
painter.drawLine(QtCore.QPointF(0,0),QtCore.QPointF(0,QP1.y()))
self.setPixmap(QtGui.QPixmap.fromImage(image))
painter.end()
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):
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)
print "dans la square box"
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)
# Display a cubic
class CubicDragable(QtGui.QLabel,object):
def __init__(self, QP1, QP2, parent=None):
super (CubicDragable, self).__init__ (parent)
self.setAcceptDrops(True)
# Construct the path
path = QtGui.QPainterPath()
path.setFillRule(QtCore.Qt.OddEvenFill)
# Drawing the cubic to gap 2 points
if (QP1.x()<QP2.x()):
# Coordinates of the first control point
QPc1 = QtCore.QPointF((QP2.x()-QP1.x())/2,QP1.y())
# Coodinates of the second control point
QPc2 = QtCore.QPointF((QP2.x()-QP1.x())/2,QP2.y())
else:
# Coordinates of the first control point
QPc1 = QtCore.QPointF((QP1.x()-QP2.x())/2,QP1.y())
# Coodinates of the second control point
QPc2 = QtCore.QPointF((QP1.x()-QP2.x())/2,QP2.y())
path.moveTo(QP1)
path.cubicTo(QPc1,QPc2,QP2)
path.closeSubpath()
# Area where the path will be drawn
image = QtGui.QImage(abs(QP1.x()- QP2.x()), abs(QP1.y()- QP2.y()),
QtGui.QImage.Format_ARGB32_Premultiplied)
# Start the painting device
painter = QtGui.QPainter()
painter.begin(image)
painter.setRenderHint(QtGui.QPainter.Antialiasing)
# Dawing the path of our cubic
painter.drawPath(path)
self.setPixmap(QtGui.QPixmap.fromImage(image))
painter.end()
def dragEnterEvent(self, event):
if (event.mimeData().hasFormat("application/x-dnditemdata" )):
if (event.source()==self):
event.setDropAction(QtCore.Qt.MoveAction)
print "on est dans le dragableWidget"
event.accept()
else:
event.acceptProposedAction()
else:
event.ignore()
def dropEvent(self, event):
if (event.mimeData().hasFormat("application/x-dnditemdata" )):
itemData = event.mimeData().data("application/x-dnditemdata" )
dataStream = QtCore.QDataStream(itemData, QtCore.QIODevice.ReadOnly)
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)
print "entrer dans le cubic dragable"
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)
# Display a square
# Parameters : width, height
class SquareDragable(QtGui.QLabel,object):
def __init__(self, input, output, text, parent=None):
super (SquareDragable, self).__init__ (parent)
#QtGui.QLabel.__init__(self, parent)
self.setAcceptDrops(True)
# parameters of the bloc; depends of the number of input and output
# max between input and output variables
m = max(input,output)
sizeLittleSquare = 10
# size of the bloc in function on the m
width = QtCore.QString(text).size()*7
height = m*30+sizeLittleSquare*input
# QString object from the text parameter
QStringText = QtCore.QString(text)
image = QtGui.QImage(width+2, height+2,
QtGui.QImage.Format_ARGB32_Premultiplied)
# Color of the background
self.rect = QtCore.QRectF(QtCore.QPointF(1,1), QtCore.QSizeF(width,height))
# Drawing the main rectangle
painter = QtGui.QPainter()
painter.begin(image)
painter.setRenderHint(QtGui.QPainter.Antialiasing)
painter.setBrush(QtCore.Qt.white)
painter.drawRoundRect(self.rect,10,10)
# Displaying a text center on the square
painter.drawText(self.rect, QtCore.Qt.AlignCenter, QStringText)
self.setPixmap(QtGui.QPixmap.fromImage(image))
painter.end()
def dragEnterEvent(self, event):
if (event.mimeData().hasFormat("application/x-dnditemdata" )):
if (event.source()==self):
event.setDropAction(QtCore.Qt.MoveAction)
print "on est dans le dragableWidget"
event.accept()
else:
event.acceptProposedAction()
else:
event.ignore()
def dropEvent(self, event):
if (event.mimeData().hasFormat("application/x-dnditemdata" )):
itemData = event.mimeData().data("application/x-dnditemdata" )
dataStream = QtCore.QDataStream(itemData, QtCore.QIODevice.ReadOnly)
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)
print "entrer dans le square dragable"
child.setPixmap(tempPixmap)
if (drag.start(QtCore.Qt.CopyAction | QtCore.Qt.MoveAction) == QtCore.Qt.MoveAction):
child.close()
else:
child.show()
child.setPixmap(pixmap)
# Display a picture
# Parameters : path (path of the picture
class ImageDragable(QtGui.QLabel,object):
def __init__(self, path , parent=None):
super (ImageDragable, self).__init__ (parent)
self.setAcceptDrops(True)
carIcon = QtGui.QImage(path)
self.setPixmap(QtGui.QPixmap.fromImage(carIcon))
def dragEnterEvent(self, event):
if (event.mimeData().hasFormat("application/x-dnditemdata" )):
if (event.source()==self):
event.setDropAction(QtCore.Qt.MoveAction)
print "on est dans le dragableWidget"
event.accept()
else:
event.acceptProposedAction()
else:
event.ignore()
def dropEvent(self, event):
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)
print "entrer image dragable"
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)
# Frame wich allow to drag and drop objects contained in the frame
class DragWidget(QtGui.QFrame,object):
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" ))
# ----------------------------
# Adding of graphicals objects
# ----------------------------
# square
dp = SquareDragable(4, 3, "Ben la c'est le nom de la boite", self)
dp.move(30, 30)
dp.show()
cd = CubicDragable(QtCore.QPointF(0,0),QtCore.QPointF(100,75),self)
cd.move(10,10)
cd.show()
sb = SquareBox(QtCore.QPointF(100,75),self)
sb.show()
# picture
id = ImageDragable(":/images/car.png", self)
id.move(10, 10)
id.show()
if __name__ == "__main__":
app = QtGui.QApplication(sys.argv)
window = DragWidget()
window.show()
sys.exit(app.exec_())

[B]Merci !!!![/B]

---------------
Mon Feedback: http://forum.hardware.fr/hardwaref [...] m#t2928561

Marsh Posté le 14-05-2007 à 10:02:25

Marsh Posté le 14-05-2007 à 14:48:01

sinon je peux toujours travailler en definissant des types mime différents pour les objets et traiter les différents comportement dans l'appli principale qui hérite de QFrame.. mais c'est crade

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