[refactor] extract central widget to own file
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104
central_widget.py
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104
central_widget.py
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import os
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from PyQt5.QtWidgets import QFrame, QLabel, QListWidget, QListWidgetItem, QStackedLayout, QVBoxLayout, QWidget, QGridLayout, QSpacerItem, QSizePolicy
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from PyQt5.QtGui import QPixmap
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from PyQt5.QtCore import Qt, QSettings
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from file_handler import FileHandler
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import communicator as comm
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import constants as cnst
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class CentralWidget(QWidget):
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def __init__(self, parent=None) -> None:
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super().__init__(parent=parent)
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self._splash = SplashScreen()
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self._file_view = FileView(self)
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self._stack = QStackedLayout(self)
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self._stack.addWidget(self._splash)
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self._stack.addWidget(self._file_view)
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self.setLayout(self._stack)
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self.setStyleSheet("background-color: white;")
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def show_file_content(self):
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self._stack.setCurrentIndex(1)
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def reset(self):
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self._file_view.reset()
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self._splash.reset()
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self._stack.setCurrentIndex(0)
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class FileView(QWidget):
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def __init__(self, parent=None) -> None:
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super().__init__(parent=parent)
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self.setLayout(QVBoxLayout())
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self.layout().addWidget(QLabel("FileView"))
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self._file_handler = FileHandler()
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def reset(self):
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print("FileView ", self._file_handler.is_valid)
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pass
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class SplashScreen(QWidget):
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def __init__(self, parent=None) -> None:
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super().__init__(parent=parent)
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layout = QGridLayout()
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self.setLayout(layout)
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self.setStyleSheet("background-color: white;")
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label = QLabel()
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label.setPixmap(QPixmap("./icons/nixview256.png"))
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label.setAlignment(Qt.AlignCenter)
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layout.addWidget(label, 1, 1)
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verticalSpacer = QSpacerItem(20, 40, QSizePolicy.Minimum, QSizePolicy.Expanding)
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verticalSpacer2 = QSpacerItem(20, 40, QSizePolicy.Minimum, QSizePolicy.Expanding)
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hSpacer = QSpacerItem(400, 20, QSizePolicy.Maximum, QSizePolicy.Expanding)
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hSpacer2 = QSpacerItem(400, 20, QSizePolicy.Maximum, QSizePolicy.Expanding)
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layout.addItem(verticalSpacer, 0, 1)
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layout.addItem(verticalSpacer2, 2, 1)
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layout.addItem(hSpacer, 1, 0)
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layout.addItem(hSpacer2, 1, 2)
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frame = QFrame()
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l = QVBoxLayout()
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l.addWidget(QLabel("Recently opened files:"))
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self._file_list = QListWidget(self)
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self._file_list.itemClicked.connect(self._on_file_clicked)
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l.addWidget(self._file_list)
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frame.setLayout(l)
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layout.addWidget(frame, 3, 1)
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self._file_map = {}
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self._read_recent_files()
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def _create_short_filename(self, original, index, max_len=40):
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short = original
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parts = original.split(os.sep)
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post = parts[-1]
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if len(post) > max_len - 4:
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post = post[:max_len - 4]
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short = str("%i: " % index) + "... " + post
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else:
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short = str("%i: " % index) + " ... ".join([original[:max_len - len(post) - 4], post])
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return short
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def _read_recent_files(self):
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settings = QSettings(cnst.organization, cnst.application)
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filenames = settings.value(cnst.settings_recent_files_key, [])
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del settings
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for i, f in enumerate(filenames):
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shortname = self._create_short_filename(f, i + 1, max_len=38)
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self._file_map[shortname] = f
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item = QListWidgetItem(shortname)
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item.setToolTip(f)
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self._file_list.addItem(item)
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def reset(self):
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self._file_list.clear()
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self._read_recent_files()
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def _on_file_clicked(self, item):
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comm.communicator.open_recent.emit(self._file_map[item.text()])
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@ -1,6 +1,9 @@
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from PyQt5.QtCore import QObject, pyqtSignal
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class Communicate(QObject):
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open_recent = pyqtSignal(str)
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"""
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Small class for across app communication. Defines signals, to which other classes can connect.
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"""
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open_recent = pyqtSignal(str)
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communicator = Communicate()
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104
main_window.py
104
main_window.py
@ -1,14 +1,13 @@
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import sys
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import os
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from typing import Hashable
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from PyQt5.QtWidgets import QFileDialog, QFrame, QLabel, QListWidget, QListWidgetItem, QMainWindow, QMenuBar, QStackedLayout, QToolBar, QAction, QStatusBar, QVBoxLayout, QWidget, QGridLayout, QSpacerItem, QSizePolicy
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from PyQt5.QtGui import QIcon, QPixmap, QKeySequence
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from PyQt5.QtCore import Qt, QSize, QSettings
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from PyQt5.QtWidgets import QFileDialog, QMainWindow, QMenuBar, QToolBar, QAction, QStatusBar
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from PyQt5.QtGui import QIcon, QKeySequence
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from PyQt5.QtCore import QSize, QSettings
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from numpy import unique
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from file_handler import FileHandler
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import constants as cnst
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import communicator as comm
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from central_widget import CentralWidget
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class NixView(QMainWindow):
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@ -108,98 +107,3 @@ class NixView(QMainWindow):
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sys.exit()
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class CentralWidget(QWidget):
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def __init__(self, parent=None) -> None:
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super().__init__(parent=parent)
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self._splash = SplashScreen()
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self._file_view = FileView(self)
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self._stack = QStackedLayout(self)
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self._stack.addWidget(self._splash)
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self._stack.addWidget(self._file_view)
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self.setLayout(self._stack)
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self.setStyleSheet("background-color: white;")
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def show_file_content(self):
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self._stack.setCurrentIndex(1)
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def reset(self):
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self._file_view.reset()
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self._splash.reset()
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self._stack.setCurrentIndex(0)
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class FileView(QWidget):
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def __init__(self, parent=None) -> None:
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super().__init__(parent=parent)
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self.setLayout(QVBoxLayout())
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self.layout().addWidget(QLabel("FileView"))
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self._file_handler = FileHandler()
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def reset(self):
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print("FileView ", self._file_handler.is_valid)
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pass
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class SplashScreen(QWidget):
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def __init__(self, parent=None) -> None:
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super().__init__(parent=parent)
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layout = QGridLayout()
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self.setLayout(layout)
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self.setStyleSheet("background-color: white;")
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label = QLabel()
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label.setPixmap(QPixmap("./icons/nixview256.png"))
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label.setAlignment(Qt.AlignCenter)
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layout.addWidget(label, 1, 1)
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verticalSpacer = QSpacerItem(20, 40, QSizePolicy.Minimum, QSizePolicy.Expanding)
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verticalSpacer2 = QSpacerItem(20, 40, QSizePolicy.Minimum, QSizePolicy.Expanding)
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hSpacer = QSpacerItem(400, 20, QSizePolicy.Maximum, QSizePolicy.Expanding)
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hSpacer2 = QSpacerItem(400, 20, QSizePolicy.Maximum, QSizePolicy.Expanding)
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layout.addItem(verticalSpacer, 0, 1)
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layout.addItem(verticalSpacer2, 2, 1)
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layout.addItem(hSpacer, 1, 0)
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layout.addItem(hSpacer2, 1, 2)
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frame = QFrame()
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l = QVBoxLayout()
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l.addWidget(QLabel("Recently opened files:"))
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self._file_list = QListWidget(self)
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self._file_list.itemClicked.connect(self._on_file_clicked)
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l.addWidget(self._file_list)
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frame.setLayout(l)
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layout.addWidget(frame, 3, 1)
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self._file_map = {}
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self._read_recent_files()
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def _create_short_filename(self, original, index, max_len=40):
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short = original
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parts = original.split(os.sep)
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post = parts[-1]
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if len(post) > max_len - 4:
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post = post[:max_len - 4]
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short = str("%i: " % index) + "... " + post
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else:
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short = str("%i: " % index) + " ... ".join([original[:max_len - len(post) - 4], post])
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return short
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def _read_recent_files(self):
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settings = QSettings(cnst.organization, cnst.application)
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filenames = settings.value(cnst.settings_recent_files_key, [])
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del settings
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for i, f in enumerate(filenames):
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shortname = self._create_short_filename(f, i + 1, max_len=38)
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self._file_map[shortname] = f
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item = QListWidgetItem(shortname)
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item.setToolTip(f)
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self._file_list.addItem(item)
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def reset(self):
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self._file_list.clear()
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self._read_recent_files()
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def _on_file_clicked(self, item):
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comm.communicator.open_recent.emit(self._file_map[item.text()])
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