New Demo Program - a non-PIL version of the image album demo that uses PIL. Demonstrates what PIL can do for your program.

DemoPrograms/Demo_Graph_Elem_Image_Album_No_PIL.py

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+#!/usr/bin/env python
+import PySimpleGUI as sg
+import os
+
+"""
+    Demo Image Album... NO PIL version.... displays images on Graph Element and has a visual "slide transition"
+
+    Click on right side of image to navigate down through filenames, left side for up.
+
+    Same program as the Demo_Graph_Elem_Image_Album.py, but without using PIL
+
+    Not using PIL has 2 impacts:
+    1. The images are not resized to fit the window
+    2. The images are limited to PNG and GIF files
+
+    Copyright 2021 PySimpleGUI.org
+"""
+
+G_SIZE = (800, 600)  # Size of the Graph in pixels. Using a 1 to 1 mapping of pixels to pixels
+
+sg.theme('black')
+folder = sg.popup_get_folder('Where are your images?')
+if not folder:
+    exit(0)
+
+file_list = os.listdir(folder)
+fnames = [f for f in file_list if os.path.isfile(
+    os.path.join(folder, f)) and f.lower().endswith((".png", ".gif"))]
+num_files = len(fnames)
+
+graph = sg.Graph(canvas_size=G_SIZE, graph_bottom_left=(0, 0), graph_top_right=G_SIZE, enable_events=True, key='-GRAPH-', pad=(0, 0))
+
+layout = [[sg.Text('Click on the right side of the window to navigate forward, the left side to go backwards')],
+          [sg.Text(f'Displaying image: '), sg.Text(k='-FILENAME-')],
+          [graph]]
+
+window = sg.Window('Scrolling Image Viewer', layout, margins=(0, 0), use_default_focus=False, finalize=True)
+
+offset, move_amount, direction = 0, 5, 'left'
+
+while True:
+    file_to_display = os.path.join(folder, fnames[offset])
+    window['-FILENAME-'].update(file_to_display)
+
+    image_id = graph.draw_image(filename=file_to_display, location=(0, G_SIZE[1]))
+
+    event, values = window.read()
+    if event == sg.WIN_CLOSED:
+        break
+
+    # if image is clicked, then move in the left direction if clicked on left half of the image
+    if event == '-GRAPH-':
+        direction = 'left' if values['-GRAPH-'][0] < (G_SIZE[0] // 2) else 'right'
+
+    # Do the animation
+    for i in range(G_SIZE[0] // move_amount):
+        graph.move_figure(image_id, -move_amount if direction == 'left' else move_amount, 0)
+        window.refresh()
+    graph.delete_figure(image_id)
+
+    # Bump the image index
+    if direction == 'left':
+        offset = (offset + (num_files - 1)) % num_files  # Decrement - roll over to MAX from 0
+    else:
+        offset = (offset + 1) % num_files  # Increment to MAX then roll over to 0
+
+window.close()