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#!/usr/bin/env python
############################################################################
##
## Copyright (C) 2006-2006 Trolltech ASA. All rights reserved.
##
## This file is part of the example classes of the Qt Toolkit.
##
## Licensees holding a valid Qt License Agreement may use this file in
## accordance with the rights, responsibilities and obligations
## contained therein. Please consult your licensing agreement or
## contact sales@trolltech.com if any conditions of this licensing
## agreement are not clear to you.
##
## Further information about Qt licensing is available at:
## http://www.trolltech.com/products/qt/licensing.html or by
## contacting info@trolltech.com.
##
## This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
## WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
##
############################################################################
from PyQt4 import QtCore, QtGui
import dragdroprobot_rc
class ColorItem(QtGui.QGraphicsItem):
n = 0
def __init__(self):
super(ColorItem, self).__init__()
self.color = QtGui.QColor(QtCore.qrand() % 256, QtCore.qrand() % 256,
QtCore.qrand() % 256)
self.setToolTip(
"QColor(%d, %d, %d)\nClick and drag this color onto the robot!" %
(self.color.red(), self.color.green(), self.color.blue())
)
self.setCursor(QtCore.Qt.OpenHandCursor)
def boundingRect(self):
return QtCore.QRectF(-15.5, -15.5, 34, 34)
def paint(self, painter, option, widget):
painter.setPen(QtCore.Qt.NoPen)
painter.setBrush(QtCore.Qt.darkGray)
painter.drawEllipse(-12, -12, 30, 30)
painter.setPen(QtGui.QPen(QtCore.Qt.black, 1))
painter.setBrush(QtGui.QBrush(self.color))
painter.drawEllipse(-15, -15, 30, 30)
def mousePressEvent(self, event):
if event.button() != QtCore.Qt.LeftButton:
event.ignore()
return
self.setCursor(QtCore.Qt.ClosedHandCursor)
def mouseMoveEvent(self, event):
if QtCore.QLineF(QtCore.QPointF(event.screenPos()), QtCore.QPointF(event.buttonDownScreenPos(QtCore.Qt.LeftButton))).length() < QtGui.QApplication.startDragDistance():
return
drag = QtGui.QDrag(event.widget())
mime = QtCore.QMimeData()
drag.setMimeData(mime)
ColorItem.n += 1
if ColorItem.n > 2 and QtCore.qrand() % 3 == 0:
image = QtGui.QImage(':/images/head.png')
mime.setImageData(image)
drag.setPixmap(QtGui.QPixmap.fromImage(image).scaled(30,40))
drag.setHotSpot(QtCore.QPoint(15, 30))
else:
mime.setColorData(self.color)
mime.setText("#%02x%02x%02x" % (self.color.red(), self.color.green(), self.color.blue()))
pixmap = QtGui.QPixmap(34, 34)
pixmap.fill(QtCore.Qt.white)
painter = QtGui.QPainter(pixmap)
painter.translate(15, 15)
painter.setRenderHint(QtGui.QPainter.Antialiasing)
self.paint(painter, None, None)
painter.end()
pixmap.setMask(pixmap.createHeuristicMask())
drag.setPixmap(pixmap)
drag.setHotSpot(QtCore.QPoint(15, 20))
drag.exec_()
self.setCursor(QtCore.Qt.OpenHandCursor)
def mouseReleaseEvent(self, event):
self.setCursor(QtCore.Qt.OpenHandCursor)
class RobotPart(QtGui.QGraphicsItem):
def __init__(self, parent=None):
super(RobotPart, self).__init__(parent)
self.color = QtGui.QColor(QtCore.Qt.lightGray)
self.pixmap = None
self.dragOver = False
self.setAcceptDrops(True)
def dragEnterEvent(self, event):
if event.mimeData().hasColor() or \
(isinstance(self, RobotHead) and event.mimeData().hasImage()):
event.setAccepted(True)
self.dragOver = True
self.update()
else:
event.setAccepted(False)
def dragLeaveEvent(self, event):
self.dragOver = False
self.update()
def dropEvent(self, event):
self.dragOver = False
if event.mimeData().hasColor():
self.color = QtGui.QColor(event.mimeData().colorData())
elif event.mimeData().hasImage():
self.pixmap = QtGui.QPixmap(event.mimeData().imageData())
self.update()
class RobotHead(RobotPart):
def boundingRect(self):
return QtCore.QRectF(-15, -50, 30, 50)
def paint(self, painter, option, widget=None):
if not self.pixmap:
painter.setBrush(self.dragOver and self.color.light(130)
or self.color)
painter.drawRoundedRect(-10, -30, 20, 30, 25, 25,
QtCore.Qt.RelativeSize)
painter.setBrush(QtCore.Qt.white)
painter.drawEllipse(-7, -3 - 20, 7, 7)
painter.drawEllipse(0, -3 - 20, 7, 7)
painter.setBrush(QtCore.Qt.black)
painter.drawEllipse(-5, -1 - 20, 2, 2)
painter.drawEllipse(2, -1 - 20, 2, 2)
painter.setPen(QtGui.QPen(QtCore.Qt.black, 2))
painter.setBrush(QtCore.Qt.NoBrush)
painter.drawArc(-6, -2 - 20, 12, 15, 190 * 16, 160 * 16)
else:
painter.scale(.2272, .2824)
painter.drawPixmap(QtCore.QPointF(-15*4.4, -50*3.54), self.pixmap)
class RobotTorso(RobotPart):
def boundingRect(self):
return QtCore.QRectF(-30, -20, 60, 60)
def paint(self, painter, option, widget=None):
painter.setBrush(self.dragOver and self.color.light(130)
or self.color)
painter.drawRoundedRect(-20, -20, 40, 60, 25, 25,
QtCore.Qt.RelativeSize)
painter.drawEllipse(-25, -20, 20, 20)
painter.drawEllipse(5, -20, 20, 20)
painter.drawEllipse(-20, 22, 20, 20)
painter.drawEllipse(0, 22, 20, 20)
class RobotLimb(RobotPart):
def boundingRect(self):
return QtCore.QRectF(-5, -5, 40, 10)
def paint(self, painter, option, widget=None):
painter.setBrush(self.dragOver and self.color.light(130) or self.color)
painter.drawRoundedRect(self.boundingRect(), 50, 50,
QtCore.Qt.RelativeSize)
painter.drawEllipse(-5, -5, 10, 10)
class Robot(RobotPart):
def __init__(self):
super(Robot, self).__init__()
self.torsoItem = RobotTorso(self)
self.headItem = RobotHead(self.torsoItem)
self.upperLeftArmItem = RobotLimb(self.torsoItem)
self.lowerLeftArmItem = RobotLimb(self.upperLeftArmItem)
self.upperRightArmItem = RobotLimb(self.torsoItem)
self.lowerRightArmItem = RobotLimb(self.upperRightArmItem)
self.upperRightLegItem = RobotLimb(self.torsoItem)
self.lowerRightLegItem = RobotLimb(self.upperRightLegItem)
self.upperLeftLegItem = RobotLimb(self.torsoItem)
self.lowerLeftLegItem = RobotLimb(self.upperLeftLegItem)
self.timeline = QtCore.QTimeLine()
settings = [
# item position rotation at
# x y time 0 / 1
( self.headItem, 0, -18, 20, -20 ),
( self.upperLeftArmItem, -15, -10, 190, 180 ),
( self.lowerLeftArmItem, 30, 0, 50, 10 ),
( self.upperRightArmItem, 15, -10, 300, 310 ),
( self.lowerRightArmItem, 30, 0, 0, -70 ),
( self.upperRightLegItem, 10, 32, 40, 120 ),
( self.lowerRightLegItem, 30, 0, 10, 50 ),
( self.upperLeftLegItem, -10, 32, 150, 80 ),
( self.lowerLeftLegItem, 30, 0, 70, 10 ),
( self.torsoItem, 0, 0, 5, -20 )
]
self.animations = []
for item, pos_x, pos_y, rotation1, rotation2 in settings:
item.setPos(pos_x,pos_y)
animation = QtGui.QGraphicsItemAnimation()
animation.setItem(item)
animation.setTimeLine(self.timeline)
animation.setRotationAt(0, rotation1)
animation.setRotationAt(1, rotation2)
self.animations.append(animation)
self.animations[0].setScaleAt(1, 1.1, 1.1)
self.timeline.setUpdateInterval(1000 / 25)
self.timeline.setCurveShape(QtCore.QTimeLine.SineCurve)
self.timeline.setLoopCount(0)
self.timeline.setDuration(2000)
self.timeline.start()
def boundingRect(self):
return QtCore.QRectF()
def paint(self, painter, option, widget=None):
pass
if __name__== '__main__':
import sys
import math
app = QtGui.QApplication(sys.argv)
QtCore.qsrand(QtCore.QTime(0, 0, 0).secsTo(QtCore.QTime.currentTime()))
scene = QtGui.QGraphicsScene(-200, -200, 400, 400)
for i in range(10):
item = ColorItem()
angle = i*6.28 / 10.0
item.setPos(math.sin(angle)*150, math.cos(angle)*150)
scene.addItem(item)
robot = Robot()
robot.scale(1.2, 1.2)
robot.setPos(0, -20)
scene.addItem(robot)
view = QtGui.QGraphicsView(scene)
view.setRenderHint(QtGui.QPainter.Antialiasing)
view.setViewportUpdateMode(QtGui.QGraphicsView.BoundingRectViewportUpdate)
view.setBackgroundBrush(QtGui.QColor(230, 200, 167))
view.setWindowTitle("Drag and Drop Robot")
view.show()
sys.exit(app.exec_())
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