def __init__(self, parent=None):
super(GLWidgetBuffered, self).__init__(parent)
self.nav = NavigationBuffered()
self.navInterface = NavigationInterface(self.nav)
self.nav.sxmin = 1. #/self.maxviewportsize
class GLWidgetBuffered(GLWidget):
channels = 1
duration = 1
def __init__(self, parent=None):
super(GLWidgetBuffered, self).__init__(parent)
self.nav = NavigationBuffered()
self.navInterface = NavigationInterface(self.nav)
self.nav.sxmin = 1. #/self.maxviewportsize
def load_data(self, data, freq=None):
self.data = data
if type(data) is h5py.Dataset:
self.channels = data.attrs["channels"]
self.duration = data.attrs["duration"]
self.freq = data.attrs["freq"]
self.dataproxy = H5DataProxy(data)
else:
self.channels = data.shape[1]
self.duration = (data.shape[0] - 1) / float(freq)
self.freq = freq
self.dataproxy = DataProxy(data, freq)
self.dynamicviewport = DynamicViewport(self.duration)
# max translation, used for the slider
self.nav.xmin = self.dynamicviewport.xmin
self.nav.xmax = self.dynamicviewport.xmax
self.nav.txmax = self.duration - self.dynamicviewport.viewportsize
# get the first view port and data buffer to load the data at first
viewport = self.dynamicviewport.get_viewport(0)
data = self.update_data(self.dynamicviewport.get_databuffer(viewport),\
viewport)
# reload if already initialized
if self.isInitialized:
self.dataDisplay.bind_data_buffer()
self.updateGL()
def paintGL(self):
# retrieve the transformation, from the user interface functions
tx, ty = self.nav.get_translation()
sx, sy = self.nav.get_scale()
# get the current viewport index
x0, y0 = self.nav.get_data_coordinates()
viewportindex = self.dynamicviewport.get_viewport_index(x0)
# get the viewport
viewport = self.dynamicviewport.get_viewport(viewportindex)
# get the data buffer x coordinates (x0, x1)
changed = self.dynamicviewport.update_viewport(viewport)
# databuffer = self.dynamicviewport.get_databuffer(viewport)
self.nav.set_offsetx(self.dynamicviewport.databuffer[0])
# translate the data, using the compensation of the translation with offsetx
self.dataDisplay.transform(tx + self.nav.offsetx, ty, sx, sy)
# update the viewport and the data buffer if needed
# if self.dynamicviewport.update_viewport(viewportindex):
if changed: #self.dynamicviewport.update_viewport(viewport):
print "Load (%.1fs, %.1fs)" % (self.dynamicviewport.databuffer)
self.update_data(self.dynamicviewport.databuffer, renormalize=False)
self.dataDisplay.bind_data_buffer()
self.updateGL()
self.dataDisplay.paint()
def update_data(self, databuffer=None, renormalize=True):
if databuffer is None:
databuffer = self.dynamicviewport.databuffer
data = self.dataproxy.get(databuffer, offsetx=self.nav.offsetx)
n = data.shape[0] / self.channels
databounds = [i * n for i in xrange(self.channels + 1)]
# TODO: allow options
options = [get_options(None, 1.0) for _ in xrange(self.channels)]
self.dataDisplay.load(data, databounds, options=options, renormalize=renormalize)
return data