1

13693261870

2022-11-07 5daf4c21294132319770e27d9916fb12be0db7fe

 QGIS/render.py

@@ -7,6 +7,25 @@
from qgis.PyQt.QtWidgets import *
from qgis.PyQt.QtXml import *


def setChild(project, root, showLayers):
    print('Group: ' + root.name())
    for node in root.children():
        # QgsLayerTreeLayer
        if isinstance(node, QgsLayerTreeGroup):
            setChild(project, node, showLayers)
        # QgsRasterLayer, QgsVectorLayer
        else:
            name = node.layer().name()
            flag = name in showLayers
            print(str(flag) + ", " + name)

            if not flag:
                root.removeLayer(node.layer())
                # node.layer().setValid(False)
            # lyr.setSubLayerVisibility(name, flag)


QgsApplication.setPrefixPath(r"C:/Program Files/QGIS 3.16/bin", True)
qgs = QgsApplication([], True)
qgs.initQgis()
@@ -14,9 +33,6 @@
project = QgsProject.instance()
project.read(r'E:/terrait/TianJin/LFServer/QGIS/Test.qgz')
print("FileName: " + project.fileName())

# layers = project.mapLayers().values()
# root = project.layerTreeRoot()

# layout = QgsPrintLayout(project)
layout = QgsLayout(project)
@@ -29,7 +45,17 @@
layout.loadFromTemplate(doc, QgsReadWriteContext(), True)

map = layout.itemById(r'地图')
print(math.ceil(map.scale()))
print('1:' + str(math.ceil(map.scale())))

# "阀室", "站场", "管道中心线", "矢量注记", "矢量图", "影像注记", "影像图"
showLayers = ["站场", "管道中心线", "影像注记", "影像图"]
root = project.layerTreeRoot()
setChild(project, root, showLayers)
# for layer in project.mapLayers().values():
#     if isinstance(layer, QgsRasterLayer):
#         print(layer)
#     if isinstance(layer, QgsVectorLayer):
#         print(layer)

exporter = QgsLayoutExporter(layout)
img_path = os.path.join(r"E:/terrait/TianJin/LFServer/QGIS", "render.png")