Source code for spinningdiskanalyzer.main

"""Main module that starts the application"""

from .         import meta
from .         import logger
from .frontend import Window

from PySide6.QtWidgets import QApplication
from PySide6.QtGui     import QIcon
from PySide6.QtGui     import QPalette

from platform import system
from pathlib  import Path
from logging  import getLogger




def start():
    """Starts the application."""

    # Set up debug logger and mark application start.
    logger.setup()
    log = getLogger(__name__)
    log.info(f'{meta.title} {meta.version}')
    log.debug(f'current folder: {Path.cwd()}')

    # Initialize Qt.
    app = QApplication([])
    app.setStyle('Fusion')

    # Check if window theme is dark or light.
    color_foreground = app.palette().color(QPalette.Text).value()
    color_background = app.palette().color(QPalette.Base).value()
    dark_theme = (color_foreground > color_background)

    # Select corresponding icon sets.
    here = Path(__file__).parent
    if dark_theme:
        icons = here/'frontend'/'icons'/'dark'
    else:
        icons = here/'frontend'/'icons'/'light'
    if not icons.is_dir():
        raise RuntimeError(f'Icons folder "{icons}" does not exist')
    QIcon.setFallbackSearchPaths([str(icons)])

    # Use the program logo as the application icon.
    file = here/'logo.ico'
    if not file.exists():
        log.error(f'Application icon "{file}" not found.')
    app.setWindowIcon(QIcon(str(file)))

    # On Windows, register this program so that the icon is also used
    # in the Taskbar. Otherwise it would get the standard Python icon.
    if system() == 'Windows':
        from ctypes import windll
        windll.shell32.SetCurrentProcessExplicitAppUserModelID(meta.title)

    # Create main window.
    window = Window()
    window.show()

    # Run the application's event loop.
    app.exec()

    # Stop event logger after the application exited.
    log.info('Application exited.')



# Fence application entry point against module imports.
if __name__ == '__main__':
    start()