I would like the background of my label and scale bar items to be white rather than transparent.
I am using Python in QGIS. My code is below. See the # Add Scalebar and # Add Title sections towards the end. Note that this code is within a loop because I will be generating and exporting a series of maps with the same layout. I generate the render colors in code outside the loop but don't include it here because the code is already long.
I tried this based on another post but it didn't work for me.
scalebar = super(QgsLayoutItem, scalebar)
scalebar.setBrush(QColor(255,255,255))
for i in range(0,len(targ)):
# Load Raster File
fn = "/".join([fldr, targ[i]])
fi = QFileInfo(fn)
fname = fi.baseName()
rlayer = iface.addRasterLayer(fn, fname)
renderer = QgsSingleBandPseudoColorRenderer(rlayer.dataProvider(), 1, shader)
rlayer.setRenderer(renderer)
# Create and Export Print Layout
# Identify Layer for Map
layers = QgsProject.instance().mapLayersByName(fname)
layer = layers[0]
project = QgsProject.instance()
manager = project.layoutManager()
layoutName = " ".join(['Temp Pred Maps', str(i)])
layouts_list = manager.printLayouts()
# Remove any duplicate layouts
for i in layouts_list:
if i.name() == layoutName:
manager.removeLayout(i)
# Add add layout to QGIS
layout = QgsPrintLayout(project)
layout.initializeDefaults()
layout.setName(layoutName)
manager.addLayout(layout)
# SET PAGE SIZE HERE
#*** HOW TO SET PAGE SIZE? ***
page = QgsLayoutItemPage(layout)
page_size = QgsLayoutSize(200, 200, QgsUnitTypes.LayoutMillimeters)
#page.QgsPageSize(page_size.size) # Error
page.attemptResize(page_size) # Does Nothing???
#layout.addLayoutItem(page) # Adds second page
#layout.removeLayoutItem(layout)
# Create map item in the layout
map = QgsLayoutItemMap(layout)
map.setRect(20,20,20,20)
# set the map extent
ms = QgsMapSettings()
ms.setLayers([layer]) # set layers to be mapped
rect = QgsRectangle(can_ext)
rect.scale(1)
ms.setExtent(rect)
map.setExtent(rect)
layout.addLayoutItem(map)
map.attemptMove(QgsLayoutPoint(0, 0, QgsUnitTypes.LayoutMillimeters))
map.attemptResize(QgsLayoutSize(200, 200, QgsUnitTypes.LayoutMillimeters))
# Create Legend *** NEED TO GET TEMP VALUES IN LEGENED ***
legend = QgsLayoutItemLegend(layout)
legend.setTitle("")
layer.setName("Temperature (C)") # change layer name for legend
layerTree = QgsLayerTree()
layerTree.addLayer(layer)
legend.model().setRootGroup(layerTree)
legend.setStyleFont(QgsLegendStyle.Subgroup, QFont('Arial', 20))
layout.addLayoutItem(legend)
legend.attemptMove(QgsLayoutPoint(140, 0, QgsUnitTypes.LayoutMillimeters))
# legend.update()
# layout.removeLayoutItem(legend)
# Add Scalebar
scalebar = QgsLayoutItemScaleBar(layout)
scalebar.setStyle('Single Box')
scalebar.setUnits(QgsUnitTypes.DistanceMeters)
scalebar.setNumberOfSegments(2)
scalebar.setNumberOfSegmentsLeft(0)
scalebar.setUnitsPerSegment(100)
scalebar.setLinkedMap(map)
scalebar.setUnitLabel('m')
scalebar.setFont(QFont('Arial', 20))
scalebar.update()
layout.addLayoutItem(scalebar)
scalebar.attemptMove(QgsLayoutPoint(120, 193, QgsUnitTypes.LayoutMillimeters))
scalebar = super(QgsLayoutItem, scalebar)
scalebar.setBrush(QColor(255,255,255)) # This isn't working
# Add Title
# Generate Titles
date_time = re.split("T[1/2/3] ", fname)[1]
date_only = re.split(" ", date_time)[0]
time_only = re.split(" ", date_time)[1]
time_only = re.split("-", time_only)[0]+":"+re.split("-", time_only)[1]
# Date Title
title = QgsLayoutItemLabel(layout)
title.setText(date_only)
title.setFont(QFont('Arial', 30))
title.adjustSizeToText()
title.setBackgroundColor(QColor(255, 255, 255, 255)) # Not working???
layout. addLayoutItem(title)
title.attemptMove(QgsLayoutPoint(3, 3, QgsUnitTypes.LayoutMillimeters))
# title.update()
# layout.removeLayoutItem(title2)
# Time Title
title2 = QgsLayoutItemLabel(layout)
title2.setText(time_only)
title2.setFont(QFont('Arial', 30))
title2.adjustSizeToText()
title2.setBackgroundColor(QColor(255, 255, 255, 255)) # Not working???
layout. addLayoutItem(title2)
title2.attemptMove(QgsLayoutPoint(3, 20, QgsUnitTypes.LayoutMillimeters))
# Export Map Layout
# layout = manager.layoutByName(layoutName)
exporter = QgsLayoutExporter(layout)
fn = export_folder + "/" + fname + ".jpg" # file export directory and filename
exporter.exportToImage(fn, QgsLayoutExporter.ImageExportSettings())
