New Figlet Demo

DemoPrograms/Demo_pyfiglet.py

@@ -0,0 +1,82 @@
+import PySimpleGUI as sg
+import sys
+import pyfiglet
+
+"""
+    Demo pyfiglet integration
+    
+    Adapted from code originally from this fantastic repository:
+    https://github.com/nycynik/ascii-font-processor
+    Thank you nycynik for a fantastic headstart
+    
+    If you are running PySimpleGUI before verion 4.35.0.11, then you'll get an error
+    message saying there is a problem with:  bound method Multiline.__del__
+    It's because a newer parm is used in this code.  It'll all still work just fine with this error.
+    
+    This demo has an interesting little trick.  If the window is resized, then it
+    will use the new size of the Multiline element to compute the numiber of characters
+    wide the Multiline has to work with.  This number is passed to the figlet renderer.
+    
+    Copyright 2021 PySimpleGUI
+"""
+
+
+def draw_text(font, text, width=80):
+    """Simple wrapper for the main draw function"""
+
+    return pyfiglet.Figlet(font=font, width=width).renderText(text)
+
+def main():
+    selected_font = 'computer'
+    LINE_LENGTH = 100
+    MULTILINE_FONT = ('Courier', 12)
+    fonts = pyfiglet.FigletFont.getFonts()
+    column_left = [[sg.Table(headings=['Font Name'], values=fonts, key='-FONT-LIST-',
+                             col_widths=[40], num_rows=30, enable_events=True), sg.VerticalSeparator(pad=((5, 5), 0))]]
+
+    try:
+        mline_input = sg.Multiline('PySimpleGUI', size=(40,3), key='-TEXT-TO-SHOW-', scrollbar=False, enable_events=True, focus=True)
+    except:
+        mline_input = sg.Multiline('PySimpleGUI', size=(40,3), key='-TEXT-TO-SHOW-', enable_events=True, focus=True)
+
+    column_right = [[sg.Text("Font Name:", size=(10,1)), sg.Input(selected_font, size=(12,1), key='-FONT-NAME-')],
+                    [sg.Text("Text:", size=(10,1)), mline_input, sg.T('Font size for display below'), sg.Combo(list(range(4,20)), 12, enable_events=True,  k='-FONT-SIZE-')],
+                    [sg.Multiline(size=(LINE_LENGTH, 20), key='-OUTPUT-', font=MULTILINE_FONT)],]
+
+    layout = [[sg.Column(column_left),  sg.Column(column_right, expand_x=True, expand_y=True)],
+              [sg.Output(visible=False)],
+              [sg.Button('Exit'), sg.T('PySimpleGUI ver ' + sg.version.split(' ')[0] + ' tkinter ver ' + sg.tclversion_detailed + '  Python ver ' + sys.version, font='Default 8', pad=(0,0))],]
+
+    window = sg.Window('Figlet-Me', layout, resizable=True, finalize=True, right_click_menu=['_', ['Edit Me']])
+
+    window['-OUTPUT-'].expand(True, True, expand_row=True)
+    window['-OUTPUT-'].update(draw_text(selected_font, 'PySimpleGUI').strip())
+
+    while True:  # Event Loop
+        event, values = window.read()
+        print(event,values)
+        if event == sg.WIN_CLOSED or event == 'Exit':
+            break
+        if event == '-FONT-SIZE-':
+            MULTILINE_FONT = (MULTILINE_FONT[0], values['-FONT-SIZE-'])
+            window['-OUTPUT-'].update(font=MULTILINE_FONT)
+            window.refresh()
+        elif event == '-FONT-LIST-':
+            # first one is the selected, no multi-select allowed.
+            selected_font = fonts[values['-FONT-LIST-'][0]]
+            window['-FONT-NAME-'].update(selected_font)
+        elif event == 'Edit Me':
+            sg.execute_editor(__file__)
+        if event in ('Show', '-TEXT-TO-SHOW-', '-FONT-SIZE-', '-FONT-LIST-'):
+            text = values['-TEXT-TO-SHOW-']
+            if text.strip() == '':
+                text = selected_font.strip()
+            # fancy way of detecting the size of the multiline so the window can be resized
+            # line_length = window["-OUTPUT-"].get_size()[0] // sg.Text.char_width_in_pixels(MULTILINE_FONT)
+            line_length = window["-OUTPUT-"].get_size()[0] // sg.tkinter.font.Font(font=MULTILINE_FONT).measure('A')
+            window['-OUTPUT-'].update(draw_text(selected_font, text, line_length).rstrip())
+
+    window.close()
+
+if __name__ == "__main__":
+    main()