[PyQt5] QListWidget demo

# !-*- coding:utf-8 -*-
import os
import sys

from PyQt5 import uic
from PyQt5.QtCore import Qt
from PyQt5.QtWidgets import QDialog, QApplication, QListWidgetItem

# ui 파일명과 소스 파일명 동일하게 저장(_name, _ext) = os.path.splitext(os.path.basename(__file__))
_ui_path = os.path.join('./', _name + '.ui')

FORM_CLASS, _ = uic.loadUiType(_ui_path)


class DemoListWidget(QDialog, FORM_CLASS):
   """   https://doc.qt.io/qt-5/qlistwidget.html   https://doc.qt.io/qt-5/qlistwidgetitem.html   """   def __init__(self):
      super().__init__()
      self.setupUi(self)
      # ListWidget 에 데이터 추가.      self._init_data()

      self.listWidget.currentItemChanged.connect(self.cb_currentItemChanged)
      self.listWidget.currentRowChanged.connect(self.cb_currentRowChanged)
      self.listWidget.currentTextChanged.connect(self.cb_currentTextChanged)
      self.listWidget.itemActivated.connect(self.cb_itemActivated)
      self.listWidget.itemChanged.connect(self.cb_itemChanged)
      self.listWidget.itemClicked.connect(self.cb_itemClicked)

   def _init_data(self):
      _item = QListWidgetItem()
      _item.setData(Qt.DisplayRole, 'hello')
      _item.setData(Qt.UserRole, 'world')
      # checkbox 플래그 설정.      _item.setFlags(_item.flags() | Qt.ItemIsUserCheckable)
      # checkbox 초기값 설정 Qt.Unchecked : 0, Qt.PartiallyChecked : 1, Qt.Checked : 2      _item.setCheckState(Qt.Unchecked)
      # 위젯에 아이템 추가.      self.listWidget.addItem(_item)

   def cb_currentItemChanged(self, _current, _previous):
      print('cb_currentItemChanged')

   def cb_currentRowChanged(self, _currentRow):
      print('cb_currentRowChanged')

   def cb_currentTextChanged(self, _currentText):
      print('cb_currentTextChanged')

   def cb_itemActivated(self, _item):
      print('cb_itemActivated')

   def cb_itemChanged(self, _item):
      """      체크박스를 체크, 해제 했을 때 호출됨.      :param _item:      :return:      """      # hello 출력      print(_item.text())
      # hello 출력      print(_item.data(Qt.DisplayRole))
      # world 출력      print(_item.data(Qt.UserRole))
      # 체크 해제 : 0, 체크 : 1      print(_item.checkState())
      # 아이템의 row num      _row = self.listWidget.row(_item)
      print(_row)
      # 아이템 수      print(self.listWidget.count())
      # 아이템 제거.      _taken_item = self.listWidget.takeItem(_row)
      # 아이템 수      print(self.listWidget.count())

   def cb_itemClicked(self, _item):
      print('cb_itemClicked')


def main():
   app = QApplication(sys.argv)
   dialog = DemoListWidget()
   dialog.show()
   app.exec_()


if __name__ == '__main__':
   main()

Ubunut 에 qt5-designer 설치

sudo apt install qttools5-dev-tools

[QGIS3] 컨텍스트 메뉴 비활성화

iface.layerTreeView().setContextMenuPolicy(0)
iface.mainWindow().setContextMenuPolicy(0)

[QGIS3] SHP -> PostgreSQL

 l = iface.activeLayer()
type(l)
<class 'qgis._core.QgsVectorLayer'>

for _f in l.fields():
    type(l)

for _cnt, i in enumerate(l.getFeatures()):
    print(_cnt, i, i.gemetry())

g = QgsGeometry()
g.asWkb()

[PyQt5] QToolButton example

#!/usr/bin/env python# -*- coding:utf-8 -*-import sys

from PyQt5 import uic
from PyQt5.QtWidgets import QMainWindow, QApplication, QWidgetAction, QAction, QToolButton

FORM_CLASS, _ = uic.loadUiType('./ui/main.ui')


class MainForm(QMainWindow, FORM_CLASS):
    def __init__(self, parent=None):
        super().__init__(parent)
        self.setupUi(self)
        self.toolbar = self.addToolBar(u'툴바')

        self._ac1 = QAction(u'액숀1', self)
        self._ac1.triggered.connect(self._action_01)

        self._ac2 = QAction(u'액숀2', self)
        self._ac2.triggered.connect(self._action_02)

        self._tb1 = QToolButton(self)

        self._tb1.addAction(self._ac1)
        self._tb1.addAction(self._ac2)

        self._tb1.setPopupMode(QToolButton.InstantPopup)
        self._tb1.setDefaultAction(self._ac1)

        self.toolbar.addWidget(self._tb1)

    def _action_01(self):
        self._tb1.setDefaultAction(self._ac1)

    def _action_02(self):
        self._tb1.setDefaultAction(self._ac2)


if __name__ == '__main__':
    app = QApplication(sys.argv)
    w = MainForm()
    w.show()
    sys.exit(app.exec())

[QGIS3] geom to geometry

g = QgsGeometry()
wkb = bytes.fromhex("010100000000000000000045400000000000001440")
g.fromWkb(wkb)
g.get().x()
42.0
g.get().y()
5.0

[QGIS3] 모든 레이어 조회

for _temp in QgsProject.instance().layerTreeRoot().children():
    _layer = _temp.layer()