1

13693261870

2022-11-10 053724c5806dccc7d26e4bd430f06ee144bf3eaa

 QGIS/render.py

@@ -1,7 +1,9 @@
#!/usr/bin/env
# -*- coding: utf-8 -*-
import os
import sys
import math
import argparse
from qgis.core import *
from qgis.gui import *
from qgis.PyQt.QtGui import *
@@ -10,10 +12,26 @@
from qgis.PyQt.QtXml import *


# 获取完整路径
def get_full_path():
    return os.path.split(sys.argv[0])[0]


# 获取参数
def get_args():
    print("argv = ", sys.argv[1:])
    parser = argparse.ArgumentParser(description='ArgUtils')
    parser.add_argument("-src", type=str, default=get_full_path(), required=False)
    parser.add_argument("-qgz", type=str, default="Test.qgz", required=False)
    parser.add_argument("-qpt", type=str, default="Test.qpt", required=False)

    return parser.parse_args()


# 设置图层可用性
def setLayersValid(project, showLayers):
    for layer in project.mapLayers().values():
        flag = layer.name() in showLayers
def set_layers_valid(prj, show_layers):
    for layer in prj.mapLayers().values():
        flag = layer.name() in show_layers
        print(layer.name() + ": " + str(flag))
        # if not flag:
        # project.removeMapLayer(layer)
@@ -21,36 +39,42 @@


# 设置图层可见性
def setItemVisibility(root, showLayers):
    print(root.name() + ': Group')
    for node in root.children():
def set_item_visibility(root_node, show_layers):
    print(root_node.name() + ': Group')
    for node in root_node.children():
        # QgsLayerTreeLayer
        if isinstance(node, QgsLayerTreeGroup):
            setItemVisibility(node, showLayers)
            set_item_visibility(node, show_layers)
        # QgsRasterLayer, QgsVectorLayer
        else:
            name = node.layer().name()
            flag = name in showLayers
            print(name + ": " + str(flag))
            # if not flag:
            # root.removeLayer(node.layer())
            # root_node.removeLayer(node.layer())
            # node.layer().setValid(False)
            node.setItemVisibilityChecked(flag)


QgsApplication.setPrefixPath(r"C:/Program Files/QGIS 3.16/bin", True)
# 初始化
# QgsApplication.setPrefixPath(r"E:/terrait/TianJin/LFServer/QGIS/", True)
qgs = QgsApplication([], True)
qgs.initQgis()

# 加载工程
args = get_args()
project = QgsProject.instance()
project.read(r'E:/terrait/TianJin/LFServer/QGIS/Test.qgz')
# project.read(r'Test.qgz')
project.read(os.path.join(args.src, args.qgz))
print("FileName: " + project.fileName())

# layout = QgsPrintLayout(project)
layout = QgsLayout(project)
# layout.initializeDefaults()

with open(r"E:/terrait/TianJin/LFServer/QGIS/Template.qpt", 'r', encoding='utf-8') as f:
# 加载模板
# with open(r'Test.qpt', 'r', encoding='utf-8') as f:
with open(os.path.join(args.src, args.qpt), 'r', encoding='utf-8') as f:
    template_content = f.read()
doc = QDomDocument()
doc.setContent(template_content)
@@ -58,20 +82,31 @@

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

# 设置图层
# "阀室", "站场", "管道中心线", "矢量注记", "矢量图", "高德影像注记", "高德影像", "影像注记", "影像图"
# showLayers = ["阀室", "管道中心线", "矢量注记", "矢量图"]
showLayers = map.id().split(',')
showLayers = layout.customProperty("layers").split(',')
root = project.layerTreeRoot()
# setLayersValid(project, showLayers)
setItemVisibility(root, showLayers)
# set_layers_valid(project, showLayers)
set_item_visibility(root, showLayers)

layout.refresh()
collection = layout.pageCollection()
page = collection.page(0)
page.refreshItemSize()

# 刷新
map.refresh()
layout.updateBounds()
layout.refresh()

# 导出
exporter = QgsLayoutExporter(layout)
img_path = os.path.join(r"E:/terrait/TianJin/LFServer/QGIS", "render.png")
# img_path = os.path.join(r"E:/terrait/TianJin/LFServer/QGIS", "render.png")
img_path = layout.customProperty("imgPath")
exporter.exportToImage(img_path, QgsLayoutExporter.ImageExportSettings())

# 退出
qgs.exitQgis()