75 lines
3.1 KiB
Python
75 lines
3.1 KiB
Python
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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('Window Title', 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('Window Title', 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('Window Title', 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('Window Title', layout).read(close=True)
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# -------------------- Example 5 - 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('Window Title', layout).read(close=True)
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if __name__ == '__main__':
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main()
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