95 lines
3.6 KiB
Python
95 lines
3.6 KiB
Python
#!/usr/bin/env python
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import PySimpleGUI as sg
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import os
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'''
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Simple Image Browser
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This is an early demo program, so perhaps not quite as sophisticated as later ones.
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Copyright 2021 PySimpleGUI
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'''
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def main():
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# Get the folder containing the images from the user
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folder = sg.popup_get_folder('Image folder to open')
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if folder is None:
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sg.popup_cancel('Cancelling')
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return
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# get list of PNG files in folder
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png_files = [os.path.join(folder, f) for f in os.listdir(folder) if f.lower().endswith('.png')]
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filenames_only = [f for f in os.listdir(folder) if f.lower().endswith('.png')]
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if len(png_files) == 0:
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sg.popup('No PNG images in folder')
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return
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# define menu layout
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menu = [['File', ['Open Folder', 'Exit']], ['Help', ['About', ]]]
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# define layout, show and read the window
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col = [[sg.Text(png_files[0], size=(80, 3), key='-FILENAME-')],
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[sg.Image(filename=png_files[0], key='-IMAGE-', expand_x=True, expand_y=True)],
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[sg.Button('Next', size=(8, 2)), sg.Button('Prev', size=(8, 2)),
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sg.Text('File 1 of {}'.format(len(png_files)), size=(15, 1), key='-FILENUM-')]]
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col_files = [[sg.Listbox(values=filenames_only, size=(60, 30), key='-LISTBOX-', enable_events=True)],
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[sg.Text('Select a file. Use scrollwheel or arrow keys on keyboard to scroll through files one by one.')]]
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layout = [[sg.Menu(menu)], [sg.Col(col_files), sg.Col(col, expand_x=True, expand_y=True)]]
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window = sg.Window('Image Browser', layout, return_keyboard_events=True, use_default_focus=False)
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# loop reading the user input and displaying image, filename
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filenum, filename = 0, png_files[0]
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while True:
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event, values = window.read()
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# --------------------- Button & Keyboard ---------------------
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if event == sg.WIN_CLOSED:
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break
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elif event in ('Next', 'MouseWheel:Down', 'Down:40', 'Next:34') and filenum < len(png_files)-1:
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filenum += 1
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filename = os.path.join(folder, filenames_only[filenum])
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window['-LISTBOX-'].update(set_to_index=filenum, scroll_to_index=filenum)
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elif event in ('Prev', 'MouseWheel:Up', 'Up:38', 'Prior:33') and filenum > 0:
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filenum -= 1
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filename = os.path.join(folder, filenames_only[filenum])
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window['-LISTBOX-'].update(set_to_index=filenum, scroll_to_index=filenum)
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elif event == 'Exit':
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break
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elif event == '-LISTBOX-':
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filename = os.path.join(folder, values['-LISTBOX-'][0])
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filenum = png_files.index(filename)
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# ----------------- Menu choices -----------------
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if event == 'Open Folder':
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newfolder = sg.popup_get_folder('New folder', no_window=True)
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if newfolder is None:
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continue
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folder = newfolder
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png_files = [os.path.join(folder, f) for f in os.listdir(folder) if f.lower().endswith('.png')]
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filenames_only = [f for f in os.listdir(folder) if f.lower().endswith('.png')]
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window['-LISTBOX-'].update(values=filenames_only)
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window.refresh()
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filenum = 0
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elif event == 'About':
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sg.popup('Demo PNG Viewer Program',
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'Please give PySimpleGUI a try!')
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# update window with new image
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window['-IMAGE-'].update(filename=filename)
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# update window with filename
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window['-FILENAME-'].update(filename)
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# update page display
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window['-FILENUM-'].update('File {} of {}'.format(filenum + 1, len(png_files)))
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window.close()
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if __name__ == '__main__':
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main() |