source: sasview/src/sans/perspectives/calculator/load_thread.py @ 8f52edd

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Last change on this file since 8f52edd was a855fec, checked in by Mathieu Doucet <doucetm@…>, 11 years ago

Update perspective imports for latest move
  • Property mode set to 100644
File size: 2.5 KB
RevLine 
[7343319]1"""
2    Thread handler used to load data
3"""
[378d2eb]4import time
[a855fec]5from sans.data_util.calcthread import CalcThread
[6572274]6from sans.dataloader.loader import Loader
[378d2eb]7       
8class DataReader(CalcThread):
9    """
[7343319]10        Load a data given a filename
[378d2eb]11    """
[7dca26e]12    def __init__(self, path, completefn=None,
[378d2eb]13                 updatefn   = None,
14                 yieldtime  = 0.01,
15                 worktime   = 0.01
16                 ):
17        CalcThread.__init__(self, completefn,
18                 updatefn,
19                 yieldtime,
20                 worktime)
21        self.path = path
22        #Instantiate a loader
23        self.loader = Loader()
24        self.starttime = 0 
25       
26    def isquit(self):
27        """
28             @raise KeyboardInterrupt: when the thread is interrupted
29        """
30        try:
31            CalcThread.isquit(self)
32        except KeyboardInterrupt:
33            raise KeyboardInterrupt   
34       
35       
36    def compute(self):
37        """
38            read some data
39        """
40        self.starttime = time.time()
41        try:
42            data =  self.loader.load(self.path)
[7dca26e]43            self.complete(data=data)
[378d2eb]44        except KeyboardInterrupt:
45            # Thread was interrupted, just proceed and re-raise.
46            # Real code should not print, but this is an example...
47            raise
[318b5bbb]48       
49class GenReader(CalcThread):
50    """
51        Load a sld data given a filename
52    """
53    def __init__(self, path, loader, 
54                 completefn=None,
55                 updatefn   = None,
56                 yieldtime  = 0.01,
57                 worktime   = 0.01
58                 ):
59        CalcThread.__init__(self, completefn,
60                 updatefn,
61                 yieldtime,
62                 worktime)
63        self.path = path
64        #Instantiate a loader
65        self.loader = loader
66        self.starttime = 0 
67       
68    def isquit(self):
69        """
70             @raise KeyboardInterrupt: when the thread is interrupted
71        """
72        try:
73            CalcThread.isquit(self)
74        except KeyboardInterrupt:
75            raise KeyboardInterrupt   
76       
77       
78    def compute(self):
79        """
80            read some data
81        """
82        self.starttime = time.time()
83        try:
84            data =  self.loader.read(self.path)
85            self.complete(data=data)
86        except:
87            # Thread was interrupted, just proceed and re-raise.
88            # Real code should not print, but this is an example...
89            raise
90           
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