[Python] Events not neutralised after use

As you can see in the demonstration program, when two widgets are superimposed, they both receive the same event and process it one after the other, whereas the desired behaviour would be for the first widget to process it and then delete it.

In the documentation, it says that you only need to return True to neutralise an event but this doesn't seem to work.

I don't know if it's related but in this code I have another problem. If you click on a button without releasing it, exit the main window to release it, this causes an exception to be thrown.

from __future__ import annotations

import pyglet
from pyglet.graphics import Batch
from pyglet.window import Window
from pyglet.gui.widgets import WidgetBase, PushButton
from pyglet.shapes import Rectangle

from PIL import Image, ImageDraw



class TestsEventsKlass() :
def __init__( self, width, height ) :
try :
self.init_display( width, height )
self.setup_ressources()
self.setup_widgets()
self.setup_handlers()

except Exception as Err:
raise



def init_display( self, width, height ) :
try :
self.width = width
self.height = height

self.batch = Batch()
self.display = pyglet.display.get_display()
self.screen = self.display.get_default_screen()

template = pyglet.gl.Config( double_buffer=True, alpha_size = 8, depth_size=0, stencil_size=0 )
try:
self.config = self.screen.get_best_config(template)
except NoSuchConfigException as Err:
print( f"Configuration désirée non supportée...[{Err}]")
raise

context = self.config.create_context(None)

self.main_window = Window( width, height, config=self.config, style=Window.WINDOW_STYLE_OVERLAY )
self.main_window.set_caption("B & Ev")

except Exception as Err:
raise



def setup_ressources( self ) :
try :
self.back_color = (0,0,0,0)

w = round( self.main_window.width * 0.4 )
h = round( self.main_window.height * 0.3 )

# UNPRESSED
temp_image = Image.new( "RGBA", (w,h), self.back_color )
draw = ImageDraw.Draw(temp_image)
draw.rounded_rectangle( xy=(0,0,w,h), radius=27.0, fill=(64,64,64,255), outline=(32,32,32,255), width=7, corners=(True,True,True,True) )
# temp_image.save( "./unpressed.png" )
raw_image = temp_image.tobytes()
self.unpressed_img = pyglet.image.ImageData( temp_image.width, temp_image.height, 'RGBA', raw_image, pitch=-temp_image.width * 4)

# PRESSED
temp_image = Image.new( "RGBA", (w,h), self.back_color )
draw = ImageDraw.Draw(temp_image)
draw.rounded_rectangle( xy=(0,0,w,h), radius=27.0, fill=(32,32,32,255), outline=(64,64,64,255), width=4, corners=(True,True,True,True) )
# temp_image.save( "./pressed.png" )
raw_image = temp_image.tobytes()
self.pressed_img = pyglet.image.ImageData( temp_image.width, temp_image.height, 'RGBA', raw_image, pitch=-temp_image.width * 4)

# HOVER
temp_image = Image.new( "RGBA", (w,h), self.back_color )
draw = ImageDraw.Draw(temp_image)
draw.rounded_rectangle( xy=(0,0,w,h), radius=27.0, fill=(32,64,32,255), outline=(32,64,32,255), width=2, corners=(True,True,True,True) )
# temp_image.save( "./hover.png" )
raw_image = temp_image.tobytes()
self.hover_img = pyglet.image.ImageData( temp_image.width, temp_image.height, 'RGBA', raw_image, pitch=-temp_image.width * 4)

except Exception as Err:
raise



def setup_widgets( self ) :
try :
self.background = Rectangle( 0, 0, self.main_window.width, self.main_window.height,
(0,0,255,32),
batch=self.batch
)

w = self.unpressed_img.width
h = self.unpressed_img.height
x = round( (self.main_window.width-w) / 2 )
y = round( (self.main_window.height-(h*2)) / 3 )
self.button1 = PushButton( x, self.main_window.height - (y*4), self.unpressed_img, self.pressed_img, self.hover_img, self.batch )
self.button2 = PushButton( x, y*2, self.unpressed_img, self.pressed_img, self.hover_img, self.batch )

except Exception as Err:
raise



def setup_handlers( self ) :
try :
self.main_window.on_draw = self.window_on_draw

self.button1_handlers = Button1_Events()
self.button1.push_handlers( self.button1_handlers )

self.button2_handlers = Button2_Events()
self.button2.push_handlers( self.button2_handlers )

self.main_window.push_handlers(self.button2)
self.main_window.push_handlers(self.button1)

except Exception as Err:
raise



def window_on_draw( self ) :
try :
self.main_window.clear()
self.batch.draw()

except Exception as Err:
raise



def run( self ) :
try :
pyglet.app.run()

except Exception as Err:
raise



class Button1_Events() :

def on_press( self, widget: PushButton ) :
try :
print( f"{self.__class__.__name__}.on_press" )
widget._sprite.opacity = 27
return True

except Exception as Err:
raise



def on_release( self, widget: PushButton ) :
try :
print( f"{self.__class__.__name__}.on_release" )
widget._sprite.opacity = 255
return True

except Exception as Err:
raise



class Button2_Events() :

def on_press( self, widget: PushButton ) :
try :
print( f"{self.__class__.__name__}.on_press" )
widget._sprite.opacity = 27
return True

except Exception as Err:
raise



def on_release( self, widget: PushButton ) :
try :
print( f"{self.__class__.__name__}.on_release" )
widget._sprite.opacity = 255
return True

except Exception as Err:
raise





#################################################################
if __name__ != "__main__":
pass
#################################################################
else:
#################################################################
try :

# Test
ww = wh = 500
app = TestsEventsKlass(ww,wh)
app.run()

except Exception as Err:
print(Err)
raise

#################################################################

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