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
|
from PyQt4 import QtCore, QtGui
from colors import Colors
class SharedImage(object):
def __init__(self):
self.refCount = 0
self.image = None
self.pixmap = None
self.matrix = QtGui.QMatrix()
self.unscaledBoundingRect = QtCore.QRectF()
class DemoItem(QtGui.QGraphicsItem):
sharedImageHash = {}
matrix = QtGui.QMatrix()
def __init__(self, scene=None, parent=None):
super(DemoItem, self).__init__(parent, scene)
self.opacity = 1.0
self.locked = False
self.prepared = False
self.neverVisible = False
self.noSubPixeling = False
self.currentAnimation = None
self.currGuide = None
self.guideFrame = 0.0
self.sharedImage = SharedImage()
self.sharedImage.refCount += 1
self.startFrame = 0.0
self.hashKey = ''
def __del__(self):
self.sharedImage.refCount -= 1
if self.sharedImage.refCount == 0:
if self.hashKey:
del DemoItem.sharedImageHash[self.hashKey]
def animationStarted(self, id=0):
pass
def animationStopped(self, id=0):
pass
def setNeverVisible(self, never=True):
pass
def setRecursiveVisible(self, visible):
if visible and self.neverVisible:
self.setVisible(False)
return
self.setVisible(visible)
for c in self.childItems():
c.setVisible(visible)
def useGuide(self, guide, startFrame=0.0):
self.startFrame = startFrame
self.guideFrame = startFrame
while self.guideFrame > guide.startLength + guide.length():
if guide.nextGuide == guide.firstGuide:
break
guide = guide.nextGuide
self.currGuide = guide
def guideAdvance(self, distance):
self.guideFrame += distance
while self.guideFrame > self.currGuide.startLength + self.currGuide.length():
self.currGuide = self.currGuide.nextGuide
if self.currGuide == self.currGuide.firstGuide:
self.guideFrame -= self.currGuide.lengthAll()
def guideMove(self, moveSpeed):
self.currGuide.guide(self, moveSpeed)
def setPosUsingSheepDog(self, dest, sceneFence):
self.setPos(dest)
if sceneFence.isNull():
return
itemWidth = self.boundingRect().width()
itemHeight = self.boundingRect().height()
fenceRight = sceneFence.x() + sceneFence.width()
fenceBottom = sceneFence.y() + sceneFence.height()
if self.scenePos().x() < sceneFence.x():
self.moveBy(self.mapFromScene(QtCore.QPointF(sceneFence.x(), 0)).x(), 0)
if self.scenePos().x() > fenceRight - itemWidth:
self.moveBy(self.mapFromScene(QtCore.QPointF(fenceRight - itemWidth, 0)).x(), 0)
if self.scenePos().y() < sceneFence.y():
self.moveBy(0, self.mapFromScene(QtCore.QPointF(0, sceneFence.y())).y())
if self.scenePos().y() > fenceBottom - itemHeight:
self.moveBy(0, self.mapFromScene(QtCore.QPointF(0, fenceBottom - itemHeight)).y())
def setGuidedPos(self, pos):
# Make sure we have a copy.
self.guidedPos = QtCore.QPointF(pos)
def getGuidedPos(self):
# Return a copy so that it can be changed.
return QtCore.QPointF(self.guidedPos)
def switchGuide(self, guide):
self.currGuide = guide
self.guideFrame = 0.0
def inTransition(self):
if self.currentAnimation:
return self.currentAnimation.running()
else:
return False
@staticmethod
def setMatrix(matrix):
DemoItem.matrix = matrix
def useSharedImage(self, hashKey):
self.hashKey = hashKey
if hashKey not in DemoItem.sharedImageHash:
DemoItem.sharedImageHash[hashKey] = self.sharedImage
else:
self.sharedImage.refCount -= 1
self.sharedImage = DemoItem.sharedImageHash[hashKey]
self.sharedImage.refCount += 1
def validateImage(self):
if (self.sharedImage.matrix != DemoItem.matrix and not Colors.noRescale) or (self.sharedImage.image is None and self.sharedImage.pixmap is None):
# (Re)create image according to new matrix.
self.sharedImage.image = None
self.sharedImage.pixmap = None
self.sharedImage.matrix = DemoItem.matrix
# Let subclass create and draw a new image according to the new
# matrix.
if Colors.noRescale:
m = QtGui.QMatrix()
else:
m = DemoItem.matrix
image = self.createImage(m)
if image is not None:
if Colors.showBoundingRect:
# Draw red transparent rect.
painter = QtGui.QPainter(image)
painter.fillRect(image.rect(), QtGui.QColor(255, 0, 0, 50))
painter.end()
self.sharedImage.unscaledBoundingRect = self.sharedImage.matrix.inverted()[0].mapRect(QtCore.QRectF(image.rect()))
if Colors.usePixmaps:
if image.isNull():
self.sharedImage.pixmap = QtGui.QPixmap(1, 1)
else:
self.sharedImage.pixmap = QtGui.QPixmap(image.size())
self.sharedImage.pixmap.fill(QtGui.QColor(0, 0, 0, 0))
painter = QtGui.QPainter(self.sharedImage.pixmap)
painter.drawImage(0, 0, image)
else:
self.sharedImage.image = image
return True
else:
return False
return True
def boundingRect(self):
self.validateImage()
return self.sharedImage.unscaledBoundingRect
def paint(self, painter, option=None, widget=None):
if self.validateImage():
wasSmoothPixmapTransform = painter.testRenderHint(QtGui.QPainter.SmoothPixmapTransform)
painter.setRenderHint(QtGui.QPainter.SmoothPixmapTransform)
if Colors.noRescale:
# Let the painter scale the image for us. This may degrade
# both quality and performance.
if self.sharedImage.image is not None:
painter.drawImage(self.pos(), self.sharedImage.image)
else:
painter.drawPixmap(self.pos(), self.sharedImage.pixmap)
else:
m = painter.worldMatrix()
painter.setWorldMatrix(QtGui.QMatrix())
x = m.dx()
y = m.dy()
if self.noSubPixeling:
x = QtCore.qRound(x)
y = QtCore.qRound(y)
if self.sharedImage.image is not None:
painter.drawImage(QtCore.QPointF(x, y),
self.sharedImage.image)
else:
painter.drawPixmap(QtCore.QPointF(x, y),
self.sharedImage.pixmap)
if not wasSmoothPixmapTransform:
painter.setRenderHint(QtGui.QPainter.SmoothPixmapTransform,
False)
def createImage(self, matrix):
return None
def collidesWithItem(self, item, mode):
return False
|
