brush
, the alpha transparency, and deleting
selected elements, and so on. Mouse press, release, move and hover are often
related to brushing and identifying cases. These functions implement these
common processes.
common_key_press(layer, event, data, meta)
common_key_release(layer, event, data, meta)
common_mouse_press(layer, event, data, meta)
common_mouse_move(layer, event, data, meta)
common_mouse_release(layer, event, data, meta)
qdata
NULL
save_brush_history
).'none'
. If
PageUp or PageDown is pressed (or equivalently use square brackets [
and ]), we show the brush history step by step.brush
## see the source code of qbar() or qparallel()
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