def createScaleBar(self):
try:
scalebar = QgsLayoutItemScaleBar(self.layout)
scalebar.setStyle('Line Ticks Up')
scalebar.setUnits(QgsUnitTypes.DistanceKilometers)
scalebar.setNumberOfSegments(6)
scalebar.setNumberOfSegmentsLeft(0)
scalebar.setUnitsPerSegment(2)
scalebar.setLinkedMap(self.map)
scalebar.setUnitLabel('km')
scalebar.setFont(QFont('Arial', 14))
scalebar.update()
self.layout.addLayoutItem(scalebar)
scalebar.attemptMove(QgsLayoutPoint(180, 190, QgsUnitTypes.LayoutMillimeters))
except:
pass
def print_map(self, tav_num):
self.tav_num = tav_num
p = QgsProject.instance()
crs = QgsCoordinateReferenceSystem()
crs.createFromSrid(self.SRS)
p.setCrs(crs)
l = QgsLayout(p)
l.initializeDefaults()
page = l.pageCollection().page(0)
# map - this item tells the libraries where to put the map itself. Here we create a map and stretch it over the whole paper size:
x, y = 0, 0 # angolo 0, o in alto a sx
if (0 <= self.width <= 297) and (0 <= self.height <= 210):
width, height = 297, 210 # Formato A4 Landscape
elif (0 <= self.height <= 297) and (0 <= self.width <= 210):
width, height = 210, 297 # Formato A4
elif (0 <= self.width <= 420) and (0 <= self.height <= 297):
width, height = 297, 420 # Formato A3 Landscape
elif (0 <= self.height <= 420) and (0 <= self.width <= 297):
width, height = 240, 297 # Formato A4
elif (0 <= self.width <= 1189) and (0 <= self.height <= 841):
width, height = 1189, 841 # Formato A0 Landscape
elif (0 <= self.height <= 1189) and (0 <= self.width <= 841):
width, height = 841, 1189 # Formato A0
else:
width, height = self.width * 1.2, self.height * 1.2 # self.width*10, self.height*10 da un valore alla larghezza e altezza del foglio aumentato di 5 per dare un margine
size = QgsLayoutSize(width, height)
page.setPageSize(size)
map = QgsLayoutItemMap(l)
rect = self.getMapExtentFromMapCanvas(page.pageSize().width(),
page.pageSize().height(), 20.0)
map.attemptSetSceneRect(
QRectF(0, 0,
page.pageSize().width(),
page.pageSize().height()))
map.setExtent(rect)
map.setLayers([self.layerUS])
l.setReferenceMap(map)
l.addLayoutItem(map)
intestazioneLabel = QgsLayoutItemLabel(l)
txt = "Tavola %s - US:%d " % (self.tav_num + 1, self.us)
intestazioneLabel.setText(txt)
intestazioneLabel.adjustSizeToText()
intestazioneLabel.attemptMove(QgsLayoutPoint(1, 0), page=0)
intestazioneLabel.setFrameEnabled(False)
l.addLayoutItem(intestazioneLabel)
scaleLabel = QgsLayoutItemLabel(l)
txt = "Scala: "
scaleLabel.setText(txt)
scaleLabel.adjustSizeToText()
scaleLabel.attemptMove(QgsLayoutPoint(1, 5), page=0)
scaleLabel.setFrameEnabled(False)
l.addLayoutItem(scaleLabel)
# aggiunge la scale bar
scaleBarItem = QgsLayoutItemScaleBar(l)
scaleBarItem.setStyle('Numeric') # optionally modify the style
scaleBarItem.setLinkedMap(map)
scaleBarItem.applyDefaultSize()
scaleBarItem.attemptMove(QgsLayoutPoint(10, 5), page=0)
scaleBarItem.setFrameEnabled(False)
l.addLayoutItem(scaleBarItem)
le = QgsLayoutExporter(l)
settings = QgsLayoutExporter.ImageExportSettings()
settings.dpi = 100
MAPS_path = '{}{}{}'.format(self.HOME, os.sep,
"pyarchinit_MAPS_folder")
tav_name = "Tavola_{}_us_{}.png".format(self.tav_num + 1, self.us)
filename_png = '{}{}{}'.format(MAPS_path, os.sep, tav_name)
le.exportToImage(filename_png, settings)
self.remove_layer()