def get_legend_from_graphics_view(legend_widget: pg.GraphicsView):
""" Configures and returns a legend widget given a GraphicsView
:param legend_widget: instance of GraphicsView object
:return: pg.LegendItem
"""
legend = pg.LegendItem()
view_box = pg.ViewBox()
legend_widget.setCentralWidget(view_box)
legend.setParentItem(view_box)
legend.anchor((0, 0), (0, 0))
return legend
class DataWidget(QWidget):
def __init__(self, parent, shared_data):
super(DataWidget, self).__init__(parent)
self.__shared_data = shared_data
self.__shared_data.update_sync.emit()
# Add the file selection controls
self.__dir_picker_button = QPushButton()
self.__dir_picker_button.setEnabled(True)
self.__dir_picker_button.setText("Load data")
self.__dir_picker_button.setIcon(self.style().standardIcon(QStyle.SP_DirIcon))
self.__dir_picker_button.setToolTip('Select the directory using the file explorer')
self.__dir_picker_button.clicked.connect(self.__open_dir_picker)
# Add the sync controls
self.__sync_time_label = QLabel()
self.__sync_time_label.setText('Enter the timecode (HH:mm:ss:zzz) : ')
self.__sync_time_edit = QTimeEdit()
self.__sync_time_edit.setDisplayFormat('HH:mm:ss:zzz')
self.__sync_time_edit.setEnabled(False)
self.__sync_time_button = QPushButton()
self.__sync_time_button.setText('Sync data')
self.__sync_time_button.setEnabled(False)
self.__sync_time_button.clicked.connect(self.__sync_data)
# Create the layout for the file controls
dir_layout = QHBoxLayout()
dir_layout.setContentsMargins(0, 0, 0, 0)
dir_layout.addWidget(self.__dir_picker_button)
dir_layout.addStretch(1)
dir_layout.addWidget(self.__sync_time_label)
dir_layout.addWidget(self.__sync_time_edit)
dir_layout.addWidget(self.__sync_time_button)
# Create the axis and their viewbox
self.__x_axis_item = AxisItem('left')
self.__y_axis_item = AxisItem('left')
self.__z_axis_item = AxisItem('left')
self.__x_axis_viewbox = ViewBox()
self.__y_axis_viewbox = ViewBox()
self.__z_axis_viewbox = ViewBox()
# Create the widget which will display the data
self.__graphic_view = GraphicsView(background="#ecf0f1")
self.__graphic_layout = GraphicsLayout()
self.__graphic_view.setCentralWidget(self.__graphic_layout)
# Add the axis to the widget
self.__graphic_layout.addItem(self.__x_axis_item, row=2, col=3, rowspan=1, colspan=1)
self.__graphic_layout.addItem(self.__y_axis_item, row=2, col=2, rowspan=1, colspan=1)
self.__graphic_layout.addItem(self.__z_axis_item, row=2, col=1, rowspan=1, colspan=1)
self.__plot_item = PlotItem()
self.__plot_item_viewbox = self.__plot_item.vb
self.__graphic_layout.addItem(self.__plot_item, row=2, col=4, rowspan=1, colspan=1)
self.__graphic_layout.scene().addItem(self.__x_axis_viewbox)
self.__graphic_layout.scene().addItem(self.__y_axis_viewbox)
self.__graphic_layout.scene().addItem(self.__z_axis_viewbox)
self.__x_axis_item.linkToView(self.__x_axis_viewbox)
self.__y_axis_item.linkToView(self.__y_axis_viewbox)
self.__z_axis_item.linkToView(self.__z_axis_viewbox)
self.__x_axis_viewbox.setXLink(self.__plot_item_viewbox)
self.__y_axis_viewbox.setXLink(self.__plot_item_viewbox)
self.__z_axis_viewbox.setXLink(self.__plot_item_viewbox)
self.__plot_item_viewbox.sigResized.connect(self.__update_views)
self.__x_axis_viewbox.enableAutoRange(axis=ViewBox.XAxis, enable=True)
self.__y_axis_viewbox.enableAutoRange(axis=ViewBox.XAxis, enable=True)
self.__z_axis_viewbox.enableAutoRange(axis=ViewBox.XAxis, enable=True)
# Create the final layout
self.__v_box = QVBoxLayout()
self.__v_box.addLayout(dir_layout)
self.__v_box.addWidget(self.__graphic_view)
self.setLayout(self.__v_box)
self.__restore_state()
def __open_dir_picker(self):
self.__shared_data.data_file_path = QFileDialog.getOpenFileUrl(self, 'Open the Hexoskin data directory',
QDir.homePath())[0]
if self.__shared_data.data_file_path is not None:
try:
self.__load_data()
self.__add_selector_acc_gyr()
self.__show_data('ACC_X', 'ACC_Y', 'ACC_Z')
except FileNotFoundError:
pass
except UnicodeDecodeError:
pass
def __load_data(self):
if self.__shared_data.data_file_path is not None:
self.__shared_data.import_parameter()
def __show_data(self, field1, field2, field3):
if self.__shared_data.parameter is not None:
# Generate the timecodes if needed
if len(self.__shared_data.parameter['TIMECODE']) == 0:
if self.__shared_data.sampling_rate is None:
result = False
while not result and result == 0:
result = self.__show_sampling_rate_picker()
self.__shared_data.add_timecode()
self.__x_axis_viewbox.clear()
self.__y_axis_viewbox.clear()
self.__z_axis_viewbox.clear()
# Show the 3 selected fields
self.__x_axis_viewbox.addItem(PlotCurveItem(list(map(int, self.__shared_data.parameter.get(field1))),
pen='#34495e'))
self.__y_axis_viewbox.addItem(PlotCurveItem(list(map(int, self.__shared_data.parameter.get(field2))),
pen='#9b59b6'))
self.__z_axis_viewbox.addItem(PlotCurveItem(list(map(int, self.__shared_data.parameter.get(field3))),
pen='#3498db'))
self.__x_axis_item.setLabel(field1, color="#34495e")
self.__y_axis_item.setLabel(field2, color="#9b59b6")
self.__z_axis_item.setLabel(field3, color="#3498db")
# Add the middle line and the bottom timecodes
timecodes = self.__shared_data.parameter['TIMECODE']
middle = [0] * len(timecodes)
self.__plot_item_viewbox.addItem(PlotCurveItem(middle, pen='#000000'))
self.__plot_item.getAxis('bottom').setTicks(
self.__generate_time_ticks(timecodes, self.__shared_data.sampling_rate))
# Enable the controls
self.__sync_time_edit.setEnabled(True)
self.__sync_time_button.setEnabled(True)
self.__dir_picker_button.setEnabled(False)
self.__update_views()
def __update_views(self):
self.__x_axis_viewbox.setGeometry(self.__plot_item_viewbox.sceneBoundingRect())
self.__y_axis_viewbox.setGeometry(self.__plot_item_viewbox.sceneBoundingRect())
self.__z_axis_viewbox.setGeometry(self.__plot_item_viewbox.sceneBoundingRect())
def __generate_time_ticks(self, timecodes, rate):
ticks = list()
steps = [rate * 30, rate * 15, rate * 5, rate]
for step in steps:
temp = list()
i = step
while i in range(len(timecodes)):
temp.append((i, timecodes[i].strftime('%H:%M:%S:') + str(int(timecodes[i].microsecond / 1000))))
i += step
ticks.append(temp)
return ticks
def __sync_data(self):
self.__shared_data.data_sync = self.__sync_time_edit.text()
self.__shared_data.update_sync.emit()
def __show_sampling_rate_picker(self) -> bool:
self.__shared_data.sampling_rate, result = QInputDialog.getInt(self, 'Set sampling rate value', 'Sampling rate')
return result
def __add_selector_acc_gyr(self):
if 'GYR_X' in self.__shared_data.parameter.keys() or 'GYR_Y' in self.__shared_data.parameter.keys() \
or 'GYR_Z' in self.__shared_data.parameter.keys():
show_acc = QPushButton()
show_acc.setText('Show Accelerometer Axis')
show_acc.clicked.connect(self.__show_acc)
show_gyr = QPushButton()
show_gyr.setText('Show Gyroscope Axis')
show_gyr.clicked.connect(self.__show_gyr)
layout = QHBoxLayout()
layout.addWidget(show_acc)
layout.addWidget(show_gyr)
layout.addStretch(1)
self.__v_box.addLayout(layout)
def __show_acc(self):
self.__show_data('ACC_X', 'ACC_Y', 'ACC_Z')
def __show_gyr(self):
self.__show_data('GYR_X', 'GYR_Y', 'GYR_Z')
def __restore_state(self):
if self.__shared_data.parameter is not None:
self.__add_selector_acc_gyr()
self.__show_data('ACC_X', 'ACC_Y', 'ACC_Z')
print('trigger reimport')
if self.__shared_data.data_sync is not None:
text_time = self.__shared_data.data_sync.split(':')
time = QTime()
time.setHMS(int(text_time[0]), int(text_time[1]), int(text_time[2]), int(text_time[3]))
self.__sync_time_edit.setTime(time)
