1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
|
#!/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 PySide2 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.lighter(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.lighter(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.lighter(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_())
|
