#!/usr/bin/env python
#############################################################################
##
## Copyright (C) 2013 Riverbank Computing Limited.
## Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
## All rights reserved.
##
## This file is part of the examples of PyQt.
##
## $QT_BEGIN_LICENSE:BSD$
## You may use this file under the terms of the BSD license as follows:
##
## "Redistribution and use in source and binary forms, with or without
## modification, are permitted provided that the following conditions are
## met:
## * Redistributions of source code must retain the above copyright
## notice, this list of conditions and the following disclaimer.
## * Redistributions in binary form must reproduce the above copyright
## notice, this list of conditions and the following disclaimer in
## the documentation and/or other materials provided with the
## distribution.
## * Neither the name of Nokia Corporation and its Subsidiary(-ies) nor
## the names of its contributors may be used to endorse or promote
## products derived from this software without specific prior written
## permission.
##
## THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
## "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
## LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
## A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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## OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
## $QT_END_LICENSE$
##
#############################################################################
from PyQt5.QtCore import (QLineF, QMimeData, QPoint, QPointF, qrand, QRectF,
qsrand, Qt, QTime, QTimeLine)
from PyQt5.QtGui import (QBrush, QColor, QDrag, QImage, QPainter, QPen,
QPixmap, QTransform)
from PyQt5.QtWidgets import (QApplication, QGraphicsItem,
QGraphicsItemAnimation, QGraphicsScene, QGraphicsView)
import dragdroprobot_rc
class ColorItem(QGraphicsItem):
n = 0
def __init__(self):
super(ColorItem, self).__init__()
self.color = QColor(qrand() % 256, qrand() % 256, 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(Qt.OpenHandCursor)
def boundingRect(self):
return QRectF(-15.5, -15.5, 34, 34)
def paint(self, painter, option, widget):
painter.setPen(Qt.NoPen)
painter.setBrush(Qt.darkGray)
painter.drawEllipse(-12, -12, 30, 30)
painter.setPen(QPen(Qt.black, 1))
painter.setBrush(QBrush(self.color))
painter.drawEllipse(-15, -15, 30, 30)
def mousePressEvent(self, event):
if event.button() != Qt.LeftButton:
event.ignore()
return
self.setCursor(Qt.ClosedHandCursor)
def mouseMoveEvent(self, event):
if QLineF(QPointF(event.screenPos()), QPointF(event.buttonDownScreenPos(Qt.LeftButton))).length() < QApplication.startDragDistance():
return
drag = QDrag(event.widget())
mime = QMimeData()
drag.setMimeData(mime)
ColorItem.n += 1
if ColorItem.n > 2 and qrand() % 3 == 0:
image = QImage(':/images/head.png')
mime.setImageData(image)
drag.setPixmap(QPixmap.fromImage(image).scaled(30,40))
drag.setHotSpot(QPoint(15, 30))
else:
mime.setColorData(self.color)
mime.setText("#%02x%02x%02x" % (self.color.red(), self.color.green(), self.color.blue()))
pixmap = QPixmap(34, 34)
pixmap.fill(Qt.white)
painter = QPainter(pixmap)
painter.translate(15, 15)
painter.setRenderHint(QPainter.Antialiasing)
self.paint(painter, None, None)
painter.end()
pixmap.setMask(pixmap.createHeuristicMask())
drag.setPixmap(pixmap)
drag.setHotSpot(QPoint(15, 20))
drag.exec_()
self.setCursor(Qt.OpenHandCursor)
def mouseReleaseEvent(self, event):
self.setCursor(Qt.OpenHandCursor)
class RobotPart(QGraphicsItem):
def __init__(self, parent=None):
super(RobotPart, self).__init__(parent)
self.color = QColor(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 = QColor(event.mimeData().colorData())
elif event.mimeData().hasImage():
self.pixmap = QPixmap(event.mimeData().imageData())
self.update()
class RobotHead(RobotPart):
def boundingRect(self):
return QRectF(-15, -50, 30, 50)
def paint(self, painter, option, widget=None):
if not self.pixmap:
painter.setBrush(self.dragOver and self.color.lighter(130)
or self.color)
painter.drawRoundedRect(-10, -30, 20, 30, 25, 25, Qt.RelativeSize)
painter.setBrush(Qt.white)
painter.drawEllipse(-7, -3 - 20, 7, 7)
painter.drawEllipse(0, -3 - 20, 7, 7)
painter.setBrush(Qt.black)
painter.drawEllipse(-5, -1 - 20, 2, 2)
painter.drawEllipse(2, -1 - 20, 2, 2)
painter.setPen(QPen(Qt.black, 2))
painter.setBrush(Qt.NoBrush)
painter.drawArc(-6, -2 - 20, 12, 15, 190 * 16, 160 * 16)
else:
painter.scale(.2272, .2824)
painter.drawPixmap(QPointF(-15*4.4, -50*3.54), self.pixmap)
class RobotTorso(RobotPart):
def boundingRect(self):
return QRectF(-30, -20, 60, 60)
def paint(self, painter, option, widget=None):
painter.setBrush(self.dragOver and self.color.lighter(130)
or self.color)
painter.drawRoundedRect(-20, -20, 40, 60, 25, 25, 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 QRectF(-5, -5, 40, 10)
def paint(self, painter, option, widget=None):
painter.setBrush(self.dragOver and self.color.lighter(130) or self.color)
painter.drawRoundedRect(self.boundingRect(), 50, 50, 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 = 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 = 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(QTimeLine.SineCurve)
self.timeline.setLoopCount(0)
self.timeline.setDuration(2000)
self.timeline.start()
def boundingRect(self):
return QRectF()
def paint(self, painter, option, widget=None):
pass
if __name__== '__main__':
import sys
import math
app = QApplication(sys.argv)
qsrand(QTime(0, 0, 0).secsTo(QTime.currentTime()))
scene = 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.setTransform(QTransform.fromScale(1.2, 1.2), True)
robot.setPos(0, -20)
scene.addItem(robot)
view = QGraphicsView(scene)
view.setRenderHint(QPainter.Antialiasing)
view.setViewportUpdateMode(QGraphicsView.BoundingRectViewportUpdate)
view.setBackgroundBrush(QColor(230, 200, 167))
view.setWindowTitle("Drag and Drop Robot")
view.show()
sys.exit(app.exec_())
