[Qgis-user] remove highlights from map canvas

[Reginald]

Hi,

I figured out how to get it working with QgsRubberBand. I don't know what is
exact the difference between QgsHighlight and QgsRubberBand but I wanted to
share this with anyone needing this functionality:

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from qgis.gui import QgsRubberBand
from PyQt5.QtGui import QColor
from PyQt5.QtCore import QTimer


h_dict = {}
layer = iface.activeLayer()
timer = QTimer()


# function that does the work of highlighting selected features
def highlight_features():    
    # create highlight geometries for selected objects
    for i in layer.selectedFeatures(): 
        fid = i.id()
        h_dict[fid] = QgsRubberBand(iface.mapCanvas(),
QgsWkbTypes.PolygonGeometry)
        # set highlight symbol properties
        h_dict[fid].setColor(QColor(255,0,0,255))
        h_dict[fid].setWidth(3)
        h_dict[fid].setFillColor(QColor(255,255,255,0))
        h_dict[fid].addGeometry(i.geometry(), None)
    timer.start(30000)
    
def dim_feature():
    if bool(h_dict):
        for feat in h_dict:
            iface.mapCanvas().scene().removeItem(h_dict[feat])

    
timer.timeout.connect(dim_feature)    
# connect the function to the layer signal
layer.selectionChanged.connect(highlight_features)

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Regards,



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