why button in float layout not getiing touch

[Degenerate Tech]

This is  an reels video view application like intsagram , i have used scrollview to scroll video widget . problem is when i am pressing buttons in MDFloatLayout buttons not getting always touch .

see codes of in videocard.py

<VideoCard>:
    md_bg_color: [0, 0, 0, 1]
    size_hint_y: None
    video_state: 'stop'
    MDFloatLayout:
        Video:
            source: root.data['source']
            state: root.video_state
            pos_hint: {'center_x':.5, 'top':1}
            id:vid
       
        MDIconButton:
            icon:'play' if vid.state=='stop' else 'pause'
            theme_font_size:'Custom'
            theme_icon_color:'Custom'
            icon_color:'white'
            font_size:'50sp'
            pos_hint:{'center_x':0.5,'center_y':0.5}
            on_release:
                root._callback(vid)
        MDIconButton:
            icon:'magnify'
            pos_hint:{'center_x':0.5,'y':0.3}
            theme_font_size:'Custom'
            theme_icon_color:'Custom'
            icon_color:'white'
            font_size:'100sp'
        Button:
            size_hint:None,None
            size:'50dp','50dp'
            text:'Play'
            pos_hint:{'center_x':0.5,'center_y':0.8}
            on_press:print('Hello')

[ELLIOT GARBUS]

I see two issues.

1. The button is covered by a BoxLayout.  Use the inspector to see it.
2. The button is in a scroll view.  Set a shorter scroll_timeout value for a more responsive button.

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Sent: Thursday, June 27, 2024 7:37 AM
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Subject: [kivy-users] why button in float layout not getiing touch

 

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[Degenerate Tech]

solved .

from kivy.lang.builder import Builder
from kivy.uix.scrollview import ScrollView
from kivy.properties import ObjectProperty
from kivy.metrics import dp
Builder.load_string(
"""
<SnapScroll>:
    scroll_distance: dp(500) # helps prevent kivy detecting multiple scroll in one drag.
    bar_width: 0
    scroll_wheel_distance: 0 # disable mouse scrolling
"""
)

class SnapScroll(ScrollView):
    layout = ObjectProperty() # The adaptive layout inside the scrollview; where widgets are added to

    def on_scroll_start(self, touch, check_children=True):
        touch.ud['pos'] = self.to_local(*touch.pos) # saving the touch pos clicked by the user.
        for widget in self.layout.children: # Looping through all widget to get the clicked widget
            if widget != self:
                if widget.collide_point(*touch.ud['pos']):
                    touch.ud['widget'] = widget # saving the widget that recieved the touch
                    touch.ud['index'] = self.layout.children.index(widget) # and its index

        return super().on_scroll_start(touch, check_children=check_children) # Make sure you return this

    def on_scroll_stop(self, touch, check_children=True):
        self._touch = None # cancel touch
        local_touch = self.to_local(*touch.pos)

        if local_touch[1] > touch.ud['pos'][1]: # Comparing current touch pos with the one we saved.
                                                # to know the direction the user is scrolling.
            if touch.ud['index'] != 0: # If widget is not the first, scroll up
                self.scroll_to(self.layout.children[touch.ud['index']-1], padding=0)
                self.layout.children[touch.ud['index']-1].video_state = 'play' # play next video
                self.layout.children[touch.ud['index']].video_state = 'pause' # pause current video
            touch.ud.pop('pos')
            return True

        elif local_touch[1] < touch.ud['pos'][1]:
            if touch.ud['index'] < len(self.layout.children)-1: # If widget is not the last, scroll down
                self.scroll_to(self.layout.children[touch.ud['index']+1], padding=0)

                self.layout.children[touch.ud['index']+1].video_state = 'play' # play prev video
                self.layout.children[touch.ud['index']].video_state = 'pause' # pause current video
            touch.ud.pop('pos')
            return True

         # we are done with the pos we save so we clear it
        return  super().on_scroll_stop(touch, check_children=check_children)