PyDMSymbol¶
-
class
pydm.widgets.symbol.PyDMSymbol(parent=None, init_channel=None)[source]¶ PyDMSymbol will render an image (symbol) for each value of a channel.
- Parameters
parent (QWidget) – The parent widget for the Label
init_channel (str, optional) – The channel to be used by the widget.
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aspectRatioMode¶ Which aspect ratio mode to use.
- Returns
- Return type
Qt.AspectRatioMode
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connection_changed(connected)[source]¶ Callback invoked when the connection state of the Channel is changed. This callback acts on the connection state to enable/disable the widget and also trigger the change on alarm severity to ALARM_DISCONNECTED.
- Parameters
connected (int) – When this value is 0 the channel is disconnected, 1 otherwise.
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imageFiles¶ JSON-formatted dictionary keyed on states (integers), with filenames of the image file to display for the state.
- Returns
- Return type
str
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init_for_designer()[source]¶ Method called after the constructor to tweak configurations for when using the widget with the Qt Designer
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minimumSizeHint()[source]¶ This property holds the recommended minimum size for the widget.
- Returns
- Return type
QSize
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paintEvent(event)[source]¶ Paint events are sent to widgets that need to update themselves, for instance when part of a widget is exposed because a covering widget was moved.
At PyDMSymbol this method handles the alarm painting with parameters from the stylesheet and draws the proper image.
- Parameters
event (QPaintEvent) –
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set_current_key(current_key)[source]¶ Change the image being displayed for the one given by current_key.
- Parameters
current_key (object) – The current_key parameter can be of any type as long as it matches the type used as key for the imageFiles dictionary.