Kivy/Python 尝试在网格布局中拖动时激活/停用按钮

Question

我正在尝试创建一种类似于常规按钮的按钮样式，但我也希望能够通过单击触发多个按钮并拖动我尝试禁用的按钮的行/列。

我有一些入门代码，当从左到右或从上到下拖动时，代码的工作方式与预期完全一致，但不是从右到左或从下到上拖动。

我尽量简化代码。任何帮助将不胜感激。

from kivy.app import App
from kivy.graphics import Color
from kivy.uix.button import Button
from kivy.uix.gridlayout import GridLayout
from kivy.uix.widget import Widget
from kivy.core.window import Window


def pointInRect(point, rect):
    x1, y1, w, h = rect
    x2, y2 = x1+w, y1+h
    x, y = point
    if (x >= x1 and x < x2) and (y >= y1 and y < y2):
        return True
    return False

class TouchInput(Widget):
    def __init__(self, cb, *args, **kwargs):
        super(TouchInput, self).__init__(*args, **kwargs)
        self.cb = cb
    def on_touch_down(self, touch):
        self.cb( touch.button, touch.pos )
    def on_touch_up(self, touch):
        self.cb( None, touch.pos )

class CustomButton(Button):
    def __init__(self, name, *args, bg_color=None, **kwargs):
        Window.bind(mouse_pos=self.on_mouse_pos)
        super(CustomButton, self).__init__(*args, **kwargs)
        self.mouse_button = None
        self.mouse_entered_while_down = False
        
        self.enabled = True

        self.text = name

        self.background_normal = ''
        self.background_down = ''
        self.default_color = (0.3, 0.1, 0.1, 1 )
        self.pressed_color = (.66, .66, .66, 1)
        self.disabled_color = (.125, .125, .125, 1)
        
        toucher = TouchInput( self.on_touch )
        toucher.size = self.size
        toucher.pos = self.pos
        self.add_widget ( toucher )
        
        self.colorize()
        
    def colorize(self, bg_color=None, text_color=None):
        if not bg_color:
            bg_color = self.disabled_color if not self.enabled else self.default_color
        
        text_color = (1 - bg_color[0],  1 - bg_color[1], 1 - bg_color[2], bg_color[3])

        self.background_color = bg_color
        self.color = text_color

    def on_touch(self, button, pos):
        self.mouse_button = button
        
        if pointInRect( pos, self.pos + self.size ):
            if self.mouse_button:
                self.mouse_enter()
            else:
                self.mouse_leave()

    def on_mouse_pos(self, *args):
        pos = args[1]
        if self.mouse_button:
            if pointInRect( pos, self.pos + self.size ):
                if not self.mouse_entered_while_down:
                    self.mouse_enter()
            else:
                if self.mouse_entered_while_down:
                    self.mouse_leave()
 
    def mouse_leave(self, *args):
        self.enabled = not self.enabled
        self.colorize()
        self.mouse_entered_while_down = False
 
    def mouse_enter(self, *args):
        self.colorize(bg_color=self.pressed_color)
        self.mouse_entered_while_down = True

class TestApp(App):
    def build(self):
        layout = GridLayout(cols=5, spacing=5, padding=5)
        for i in range(25):
            layout.add_widget( CustomButton(name=str(i)) )
        return layout

if __name__ == '__main__':
    TestApp().run()

Answer 1

对于任何有兴趣的人；我用以下代码解决了我的问题：

def on_touch_up(self, touch):
    self.mouse_button = None
    if pointInRect( touch.pos, self.pos + self.size ):
        self.mouse_leave()
        
def on_touch_down(self, touch):
    self.mouse_button = touch.button
    if pointInRect( touch.pos, self.pos + self.size ):
        self.mouse_enter()

def on_mouse_pos(self, *args):
    pos = args[1]
    if self.mouse_button:
        if pointInRect( pos, self.pos + self.size ):
            if not self.mouse_entered_while_down:
                self.mouse_enter()
        else:
            if self.mouse_entered_while_down:
                self.mouse_leave()