下拉选择联动 #1 @heroxianf

.settings/org.eclipse.core.resources.prefs

@@ -10,8 +10,8 @@ encoding//PyQtChart\u7EC3\u4E60/test/ToolTip2.py=utf-8
 encoding//QGraphicsView\u7EC3\u4E60/\u4E16\u754C\u5730\u56FE/WorldMap.py=utf-8
 encoding//QGraphicsView\u7EC3\u4E60/\u6DFB\u52A0QWidget.py=utf-8
 encoding//tmp/\u622A\u56FE\u753B\u77E9\u5F62/DrawRectangle.py=utf-8
-encoding//tmp/\u6570\u636E\u8054\u52A8/ComboBox.py=utf-8
 encoding//tmp/\u7B80\u5355\u63D2\u4EF6/Widget.py=utf-8
+encoding//\u4E0B\u62C9\u9009\u62E9\u8054\u52A8/ComboBox.py=utf-8
 encoding//\u5168\u5C40\u70ED\u952E/HotKey.py=utf-8
 encoding//\u56FE\u7247\u52A0\u8F7D/LoadImage.py=utf-8
 encoding//\u56FE\u7247\u52A0\u8F7D/res_rc.py=utf-8

README.md

@@ -19,6 +19,7 @@
  - [1.14 窗口重启](窗口重启/)
  - [1.15 气泡提示](气泡提示/)
  - [1.16 自定义import](自定义import/)
+ - [1.17 下拉选择联动](下拉选择联动/)
 
 ### [2.QGraphicsView练习](QGraphicsView练习/)
  - [2.1 世界地图](QGraphicsView练习/世界地图)

下拉选择联动/ComboBox.py

@@ -0,0 +1,113 @@
+#!/usr/bin/env python
+# -*- coding: utf-8 -*-
+
+'''
+Created on 2018年1月27日
+@author: Irony."[讽刺]
+@site: http://alyl.vip, http://orzorz.vip, https://coding.net/u/892768447, https://github.com/892768447
+@email: 892768447@qq.com
+@file: ComboBox
+@description: 
+'''
+import json
+import sys
+
+from PyQt5.QtCore import Qt, QSortFilterProxyModel, QRegExp
+from PyQt5.QtGui import QStandardItemModel, QStandardItem
+from PyQt5.QtWidgets import QWidget, QApplication, QHBoxLayout, QComboBox,\
+    QLabel, QSpacerItem, QSizePolicy
+import chardet
+
+
+__Author__ = "By: Irony.\"[讽刺]\nQQ: 892768447\nEmail: 892768447@qq.com"
+__Copyright__ = "Copyright (c) 2018 Irony.\"[讽刺]"
+__Version__ = "Version 1.0"
+
+
+class SortFilterProxyModel(QSortFilterProxyModel):
+
+    def __init__(self, *args, **kwargs):
+        super(SortFilterProxyModel, self).__init__(*args, **kwargs)
+        self.setFilterRole(Qt.ToolTipRole)  # 根据Qt.ToolTipRole角色过滤
+        self._model = QStandardItemModel(self)
+        self.setSourceModel(self._model)
+
+    def appendRow(self, item):
+        self._model.appendRow(item)
+
+    def setFilter(self, _):
+        # 过滤
+        # self.sender()#发送者
+        # 获取上一个下拉框中的item_code
+        item_code = self.sender().currentData(Qt.ToolTipRole)
+        if not item_code:
+            return
+        if item_code.endswith("0000"):  # 过滤市
+            self.setFilterRegExp(QRegExp(item_code[:-4] + "\d\d00"))
+        elif item_code.endswith("00"):  # 过滤市以下
+            self.setFilterRegExp(QRegExp(item_code[:-2] + "\d\d"))
+
+
+class Widget(QWidget):
+
+    def __init__(self, *args, **kwargs):
+        super(Widget, self).__init__(*args, **kwargs)
+        layout = QHBoxLayout(self)
+        self.province_box = QComboBox(self, minimumWidth=200)  # 市级以上
+        self.city_box = QComboBox(self, minimumWidth=200)  # 市
+        self.county_box = QComboBox(self, minimumWidth=200)  # 市级以下
+        layout.addWidget(QLabel("省/直辖市/特别行政区", self))
+        layout.addWidget(self.province_box)
+        layout.addItem(QSpacerItem(
+            20, 20, QSizePolicy.Expanding, QSizePolicy.Minimum))
+        layout.addWidget(QLabel("市", self))
+        layout.addWidget(self.city_box)
+        layout.addItem(QSpacerItem(
+            20, 20, QSizePolicy.Expanding, QSizePolicy.Minimum))
+        layout.addWidget(QLabel("区/县", self))
+        layout.addWidget(self.county_box)
+        self.initModel()
+        self.initSignal()
+        self.initData()
+
+    def initSignal(self):
+        # 初始化信号槽
+        self.province_box.currentIndexChanged.connect(
+            self.city_model.setFilter)
+        self.city_box.currentIndexChanged.connect(self.county_model.setFilter)
+
+    def initModel(self):
+        # 初始化模型
+        self.province_model = SortFilterProxyModel(self)
+        self.city_model = SortFilterProxyModel(self)
+        self.county_model = SortFilterProxyModel(self)
+        # 设置模型
+        self.province_box.setModel(self.province_model)
+        self.city_box.setModel(self.city_model)
+        self.county_box.setModel(self.county_model)
+
+    def initData(self):
+        # 初始化数据
+        datas = open("data.json", "rb").read()
+        encoding = chardet.detect(datas) or {}
+        datas = datas.decode(encoding.get("encoding", "utf-8"))
+        datas = json.loads(datas)
+        # 开始解析数据
+        for data in datas:
+            item_code = data.get("item_code")  # 编码
+            item_name = data.get("item_name")  # 名字
+            item = QStandardItem(item_name)
+            item.setData(item_code, Qt.ToolTipRole)
+            if item_code.endswith("0000"):  # 4个0结尾的是市级以上的
+                self.province_model.appendRow(item)
+            elif item_code.endswith("00"):  # 2个0结尾的是市
+                self.city_model.appendRow(item)
+            else:  # 市以下
+                self.county_model.appendRow(item)
+
+
+if __name__ == "__main__":
+    app = QApplication(sys.argv)
+    w = Widget()
+    w.show()
+    sys.exit(app.exec_())

下拉选择联动/README.md

@@ -0,0 +1,12 @@
+# QComboBox下拉数据关联
+
+这里简单的做了一个省市区关联的三级联动，数据源在data.json中
+
+主要用了QComboBox的setModel设置一个QSortFilterProxyModel过滤模型
+
+并根据唯一编码过滤，为了不影响内容显示，唯一编码的角色为ToolTipRole
+
+匆忙中写出来，可能有些不完善，或者该方式效率不是很高
+
+# 截图
+![截图1](ScreenShot/1.gif)