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
|
"""
@package animation.anim
@brief Animation class controls frame order
Classes:
- anim::Animation
(C) 2013 by the GRASS Development Team
This program is free software under the GNU General Public License
(>=v2). Read the file COPYING that comes with GRASS for details.
@author Anna Petrasova <kratochanna gmail.com>
"""
import wx
from .utils import Orientation, ReplayMode
class Animation(wx.EvtHandler):
"""Animation class specifies which frame to show at which instance."""
def __init__(self):
wx.EvtHandler.__init__(self)
self.currentIndex = 0
self.frames = []
# states
self.orientation = Orientation.FORWARD
self.replayMode = ReplayMode.ONESHOT
self.callbackUpdateFrame = None
self.callbackEndAnimation = None
self.callbackOrientationChanged = None
self.isActive = False
def IsActive(self):
"""Returns if the animation is active or not"""
return self.isActive
def SetActive(self, active):
self.isActive = active
def SetFrames(self, frames):
"""Sets animation frames.
:param frames: list of strings
"""
self.frames = frames
def GetFrame(self, index):
"""Returns animation frame"""
if len(self.frames) <= 1: # special case handling (only 1 map)
return self.frames[0]
return self.frames[index]
def GetCount(self):
"""Get frame count."""
return len(self.frames)
count = property(fget=GetCount)
def GetReplayMode(self):
"""Returns replay mode (loop)."""
return self._replayMode
def SetReplayMode(self, mode):
self._replayMode = mode
replayMode = property(fset=SetReplayMode, fget=GetReplayMode)
def GetOrientation(self):
return self._orientation
def SetOrientation(self, mode):
self._orientation = mode
orientation = property(fset=SetOrientation, fget=GetOrientation)
def SetCallbackUpdateFrame(self, callback):
"""Sets function to be called when updating frame."""
self.callbackUpdateFrame = callback
def SetCallbackEndAnimation(self, callback):
"""Sets function to be called when animation ends."""
self.callbackEndAnimation = callback
def SetCallbackOrientationChanged(self, callback):
"""Sets function to be called when orientation changes."""
self.callbackOrientationChanged = callback
def Start(self):
if not self.IsActive():
return
def Pause(self, paused):
if not self.IsActive():
return
def Stop(self):
if not self.IsActive():
return
self.currentIndex = 0
self.callbackEndAnimation(self.currentIndex, self.GetFrame(self.currentIndex))
def _arrivedToEnd(self):
"""Decides which action to do after animation end (stop, repeat)."""
if not self.IsActive():
return
if self.replayMode == ReplayMode.ONESHOT:
self.Stop()
if self.orientation == Orientation.FORWARD:
if self.replayMode == ReplayMode.REPEAT:
self.currentIndex = 0
elif self.replayMode == ReplayMode.REVERSE:
self.orientation = Orientation.BACKWARD
self.currentIndex = self.count - 2 # -1
self.callbackOrientationChanged(Orientation.BACKWARD)
else:
if self.replayMode == ReplayMode.REPEAT:
self.currentIndex = self.count - 1
elif self.replayMode == ReplayMode.REVERSE:
self.orientation = Orientation.FORWARD
self.currentIndex = 1 # 0
self.callbackOrientationChanged(Orientation.FORWARD)
def Update(self):
"""Updates frame."""
if not self.IsActive():
return
self.callbackUpdateFrame(self.currentIndex, self.GetFrame(self.currentIndex))
if self.orientation == Orientation.FORWARD:
self.currentIndex += 1
if self.currentIndex == self.count:
self._arrivedToEnd()
else:
self.currentIndex -= 1
if self.currentIndex == -1:
self._arrivedToEnd()
def FrameChangedFromOutside(self, index):
"""Let the animation know that frame was changed from outside."""
if not self.IsActive():
return
self.currentIndex = index
self.callbackUpdateFrame(self.currentIndex, self.GetFrame(self.currentIndex))
def PreviousFrameIndex(self):
if not self.IsActive():
return
if self.orientation == Orientation.FORWARD:
self.currentIndex -= 1
if self.currentIndex == -1:
self.currentIndex = 0
else:
self.currentIndex += 1
if self.currentIndex == self.count:
self.currentIndex = self.count - 1
def NextFrameIndex(self):
if not self.IsActive():
return
if self.orientation == Orientation.FORWARD:
self.currentIndex += 1
if self.currentIndex == self.count:
self.currentIndex = self.count - 1
else:
self.currentIndex -= 1
if self.currentIndex == -1:
self.currentIndex = 0
# def test():
# import wx
# app = wx.PySimpleApp()
# a = Animation()
#
#
# frame = wx.Frame(None)
# frame.Show()
#
# a.SetReplayMode(ReplayMode.REVERSE)
# a.Start()
# app.MainLoop()
#
#
# if __name__ == '__main__':
# test()
|
