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
|
#!/usr/bin/env python
from PyQt4 import QtCore, QtGui
import appchooser_rc
class Pixmap(QtGui.QGraphicsWidget):
clicked = QtCore.pyqtSignal()
def __init__(self, pix, parent=None):
super(Pixmap, self).__init__(parent)
self.orig = QtGui.QPixmap(pix)
self.p = QtGui.QPixmap(pix)
def paint(self, painter, option, widget):
painter.drawPixmap(QtCore.QPointF(), self.p)
def mousePressEvent(self, ev):
self.clicked.emit()
def setGeometry(self, rect):
super(Pixmap, self).setGeometry(rect)
if rect.size().width() > self.orig.size().width():
self.p = self.orig.scaled(rect.size().toSize())
else:
self.p = QtGui.QPixmap(self.orig)
def createStates(objects, selectedRect, parent):
for obj in objects:
state = QtCore.QState(parent)
state.assignProperty(obj, 'geometry', selectedRect)
parent.addTransition(obj.clicked, state)
def createAnimations(objects, machine):
for obj in objects:
animation = QtCore.QPropertyAnimation(obj, 'geometry', obj)
machine.addDefaultAnimation(animation)
if __name__ == '__main__':
import sys
app = QtGui.QApplication(sys.argv)
p1 = Pixmap(QtGui.QPixmap(':/digikam.png'))
p2 = Pixmap(QtGui.QPixmap(':/akregator.png'))
p3 = Pixmap(QtGui.QPixmap(':/accessories-dictionary.png'))
p4 = Pixmap(QtGui.QPixmap(':/k3b.png'))
p1.setGeometry(QtCore.QRectF(0.0, 0.0, 64.0, 64.0))
p2.setGeometry(QtCore.QRectF(236.0, 0.0, 64.0, 64.0))
p3.setGeometry(QtCore.QRectF(236.0, 236.0, 64.0, 64.0))
p4.setGeometry(QtCore.QRectF(0.0, 236.0, 64.0, 64.0))
scene = QtGui.QGraphicsScene(0, 0, 300, 300)
scene.setBackgroundBrush(QtCore.Qt.white)
scene.addItem(p1)
scene.addItem(p2)
scene.addItem(p3)
scene.addItem(p4)
window = QtGui.QGraphicsView(scene)
window.setFrameStyle(0)
window.setAlignment(QtCore.Qt.AlignLeft | QtCore.Qt.AlignTop)
window.setHorizontalScrollBarPolicy(QtCore.Qt.ScrollBarAlwaysOff)
window.setVerticalScrollBarPolicy(QtCore.Qt.ScrollBarAlwaysOff)
machine = QtCore.QStateMachine()
machine.setGlobalRestorePolicy(QtCore.QStateMachine.RestoreProperties)
group = QtCore.QState(machine)
selectedRect = QtCore.QRect(86, 86, 128, 128)
idleState = QtCore.QState(group)
group.setInitialState(idleState)
objects = [p1, p2, p3, p4]
createStates(objects, selectedRect, group)
createAnimations(objects, machine)
machine.setInitialState(group)
machine.start()
window.resize(300, 300)
window.show()
sys.exit(app.exec_())
|
