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Find desktop directory more robust; add log console
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,68 @@ | ||
| import sys | ||
| import io | ||
| from PyQt6.QtWidgets import QMainWindow, QPlainTextEdit | ||
| from PyQt6.QtGui import QAction | ||
|
|
||
| """When running a GUI application, it is useful to have a log console | ||
| since the standard output and standard error streams are not visible. | ||
| This module provides a log console that can be opened from the application's | ||
| menu bar. It is a simple text window that displays the output of sys.stdout | ||
| and sys.stderr. The log console is not shown by default, but can be opened | ||
| from the application's menu bar. | ||
| """ | ||
|
|
||
| class ConsoleOutputStream(io.TextIOBase): | ||
| def __init__(self): | ||
| self.log_console = QPlainTextEdit() | ||
| self.log_console.setReadOnly(True) | ||
| self.log_console_window = QMainWindow() | ||
| self.log_console_window.setCentralWidget(self.log_console) | ||
| self.log_console_window.setGeometry(0, 300, 600, 300) | ||
| screen_geometry = self.log_console_window.screen().geometry() | ||
| screen_height = screen_geometry.height() | ||
| window_geometry = self.log_console_window.geometry() | ||
| window_height = window_geometry.height() | ||
| self.log_console_window.setGeometry(0, screen_height - window_height, 600, 300) | ||
| self.log_console_window.setWindowTitle('Log Console') | ||
| # Autoscroll to the bottom | ||
| self.log_console.verticalScrollBar().rangeChanged.connect( | ||
| lambda: self.log_console.verticalScrollBar().setValue( | ||
| self.log_console.verticalScrollBar().maximum())) | ||
| # Should the application ever crash, show the log console | ||
| sys.excepthook = self.open_log_console | ||
|
|
||
| def write(self, s): | ||
| # Ignore whitespace | ||
| if s.isspace(): | ||
| return | ||
| # Remove newline characters; does not seem to work | ||
| s = s.rstrip() | ||
| self.log_console.appendHtml(s) | ||
|
|
||
| def add_menu_items(self, menu, parent): | ||
| menu.addSeparator() | ||
| log_console_action = QAction('Open Log Console', parent) | ||
| log_console_action.triggered.connect(self.open_log_console) | ||
| menu.addAction(log_console_action) | ||
|
|
||
| def open_log_console(self): | ||
| if self.log_console_window.isVisible(): | ||
| return | ||
| self.log_console_window.show() | ||
|
|
||
| class Tee(object): | ||
| def __init__(self, stream1, stream2): | ||
| self.stream1 = stream1 | ||
| self.stream2 = stream2 | ||
|
|
||
| def write(self, data): | ||
| self.stream1.write(data) | ||
| self.stream2.write(data) | ||
|
|
||
| def flush(self): | ||
| self.stream1.flush() | ||
| self.stream2.flush() | ||
|
|
||
| """app.log_console = log_console.ConsoleOutputStream() | ||
| sys.stdout = log_console.Tee(sys.stdout, app.log_console) | ||
| sys.stderr = log_console.Tee(sys.stderr, app.log_console)""" |
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