Source code for qtpyvcp.widgets.hal_widgets.hal_slider


from qtpy.QtWidgets import QSlider

from qtpyvcp import hal
from qtpyvcp.widgets import HALWidget

from qtpyvcp.utilities.logger import getLogger
from qtpyvcp.plugins import getPlugin

LOG = getLogger(__name__)
STATUS = getPlugin('status')

[docs]class HalSlider(QSlider, HALWidget): """HAL Slider Slider for setting `u32` or `float` HAL pin values. .. table:: Generated HAL Pins ========================= ===== ========= HAL Pin Name Type Direction ========================= ===== ========= qtpyvcp.slider.enable bit in qtpyvcp.slider.out-i u32 out qtpyvcp.slider.out-f float out ========================= ===== ========= """ def __init__(self, parent=None): super(HalSlider, self).__init__(parent) self._enable_pin = None self._s32_value_pin = None self._float_value_pin = None self._signed_int = True self.valueChanged.connect(self.onValueChanged)
[docs] def mousePressEvent(self, event): # Test for UI LOCK and consume event but do nothing if LOCK in place if STATUS.isLocked(): LOG.debug('Accept mouse Press Event') event.accept() return super().mousePressEvent(event)
[docs] def mouseReleaseEvent(self, event): if STATUS.isLocked(): LOG.debug('Accept mouse Release Event') event.accept() return super().mouseReleaseEvent(event)
[docs] def keyPressEvent(self, event): # Test for UI LOCK and consume event but do nothing if LOCK in place if STATUS.isLocked(): LOG.debug('Accept keyPressEvent Event') event.accept() return super().keyPressEvent(event)
[docs] def keyReleaseEvent(self, event): # Test for UI LOCK and consume event but do nothing if LOCK in place if STATUS.isLocked(): LOG.debug('Accept keyReleaseEvent Event') event.accept() return super().keyReleaseEvent(event)
def onValueChanged(self, val): if self._s32_value_pin is not None: self._s32_value_pin.value = val self._float_value_pin.value = val / 100.0
[docs] def mouseDoubleClickEvent(self, event): if STATUS.isLocked(): LOG.debug('Skip HAL mouseDoubleClickEvent') return self.setValue(100)
[docs] def initialize(self): comp = hal.getComponent() obj_name = self.getPinBaseName() # add slider.enable HAL pin self._enable_pin = comp.addPin(obj_name + ".enable", "bit", "in") self._enable_pin.value = self.isEnabled() self._enable_pin.valueChanged.connect(self.setEnabled) # add slider.percent HAL pin self._s32_value_pin = comp.addPin(obj_name + ".out-i", "u32", "out") self._s32_value_pin.value = self.value() # add slider.scale HAL pin self._float_value_pin = comp.addPin(obj_name + ".out-f", "float", "out") self._float_value_pin.value = self.value() / 100.0