96 lines
4.3 KiB
Python
96 lines
4.3 KiB
Python
import PySimpleGUI as sg
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"""
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Demo of using the vertical layout parameters and layout helper functions.
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Three methods of vertical alignment are shown:
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1. Using Column element to align a single element
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2. Using vtop layout helper function to align a single element
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3. Using vtop layout helper function to align an entire row
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There is also a funciton provided that will convert an entire layout into
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a top aligned layout.
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Copyright 2020 PySimpleGUI.org
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"""
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def top_align_layout(layout):
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"""
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Given a layout, return a layout with all rows vertically adjusted to the top
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:param layout: List[List[sg.Element]] The layout to justify
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:return: List[List[sg.Element]] The new layout that is all top justified
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"""
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new_layout = []
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for row in layout:
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new_layout.append(sg.vtop(row))
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return new_layout
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def main():
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# -------------------- Example 1 - No alignment --------------------
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layout = [ [sg.T('This layout uses no vertical alignment. The default is "center"')],
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[sg.Text('On row 1'), sg.Listbox(list(range(10)), size=(5,4)), sg.Text('On row 1')],
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[sg.Button('OK')] ]
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sg.Window('Example 1', layout).read(close=True)
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# -------------------- Example 2 - Top aligned Text element using Column --------------------
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layout = [ [sg.T('This uses a Column Element to align 1 element')],
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[sg.Col([[sg.Text('On row 1')]], vertical_alignment='top', pad=(0,0)), sg.Listbox(list(range(10)), size=(5,4)), sg.Text('On row 1')],
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[sg.Button('OK')] ]
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sg.Window('Example 2', layout).read(close=True)
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# -------------------- Example 3 - Top aligned Text element using Column --------------------
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layout = [ [sg.T('This layout uses the "vtop" layout helper function on 1 element')],
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[sg.vtop(sg.Text('On row 1')), sg.Listbox(list(range(10)), size=(5,4)), sg.Text('On row 1')],
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[sg.Button('OK')] ]
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sg.Window('Example 3', layout).read(close=True)
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# -------------------- Example 4 - Top align an entire row --------------------
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# Note that the vtop function takes a row as input and returns a row. DO NOT place [ ] around vtop
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# because it is a row already.
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layout = [ [sg.T('This layout uses the "vtop" layout helper function on 1 row')],
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sg.vtop([sg.Text('On row 1'), sg.Listbox(list(range(10)), size=(5,4)), sg.Text('On row 1')]),
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[sg.Button('OK')] ]
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sg.Window('Example 4', layout).read(close=True)
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# -------------------- Example 5 - Top align portion of a row --------------------
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# You can combine 2 lists to make a row [a,b] + [c,d] = [a,b,c,d]
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# To combine vtop with a normally specified row, add them vtop(a,b) + [c,d] = [a, b, c, d] (sorta)
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layout = [ [sg.T('This layout uses the "vtop" for first part of row')],
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sg.vtop([sg.Text('On row 1'), sg.Listbox(list(range(10)), size=(5,4)), sg.Text('On row 1')]) + [sg.Text('More elements'), sg.CB('Last')],
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[sg.Button('OK')] ]
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sg.Window('Example 5', layout).read(close=True)
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# -------------------- Example 5B - Top align portion of a row --------------------
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# Same operation as adding the 2 lists, but instead unpacks vtop list directly into a row layout
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try:
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layout = [ [sg.T('This layout uses the "vtop" for first part of row')],
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[*sg.vtop([sg.Text('On row 1'), sg.Listbox(list(range(10)), size=(5,4)), sg.Text('On row 1')]), sg.Text('More elements'), sg.CB('Last')],
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[sg.Button('OK')] ]
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sg.Window('Example 5B', layout).read(close=True)
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except:
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print('Your version of Python likely does not support unpacking inside of a list')
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# -------------------- Example 6 - Use function to align all rows in layout --------------------
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layout = [ [sg.T('This layout has all rows top aligned using function')],
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[sg.Text('On row 1'), sg.Listbox(list(range(10)), size=(5,4)), sg.Text('On row 1')],
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[sg.Text('On row 2'), sg.Listbox(list(range(10)), size=(5,4)), sg.Text('On row 2')],
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[sg.Button('OK')] ]
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layout = top_align_layout(layout) # pass in a layout, get a loyout back
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sg.Window('Example 6', layout).read(close=True)
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if __name__ == '__main__':
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main() |