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81 lines
2.3 KiB
Python
81 lines
2.3 KiB
Python
"""
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Controllers/WindowController
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============================
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.. versionadded:: 1.0.0
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Modules and classes that implement useful methods for getting information
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about the state of the current application window.
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Controlling the resizing direction of the application window
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------------------------------------------------------------
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.. code-block:: python
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# When resizing the application window, the direction of change will be
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# printed - 'left' or 'right'.
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from kivymd.app import MDApp
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from kivymd.uix.controllers import WindowController
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from kivymd.uix.screen import MDScreen
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class MyScreen(MDScreen, WindowController):
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def on_width(self, *args):
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print(self.get_window_width_resizing_direction())
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class Test(MDApp):
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def build(self):
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return MyScreen()
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Test().run()
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"""
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from kivy.core.window import Window
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from kivy.core.window.window_sdl2 import WindowSDL
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from kivy.metrics import dp
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class WindowController:
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def __init__(self):
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self.window_resizing_direction = "unknown"
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self.real_device_type = "unknown"
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self.__width = Window.width
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Window.bind(on_resize=self._on_resize)
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def on_size(self, instance, size: list) -> None:
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"""Called when the application screen size changes."""
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window_width = size[0]
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if window_width < dp(500):
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self.real_device_type = "mobile"
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elif window_width < dp(1100):
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self.real_device_type = "tablet"
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else:
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self.real_device_type = "desktop"
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def get_real_device_type(self) -> str:
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"""Returns the device type - 'mobile', 'tablet' or 'desktop'."""
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return self.real_device_type
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def get_window_width_resizing_direction(self) -> str:
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"""Return window width resizing direction - 'left' or 'right'."""
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return self.window_resizing_direction
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def _set_window_width_resizing_direction(self, width: int) -> None:
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if self.__width > width:
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self.window_resizing_direction = "left"
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elif self.__width < width:
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self.window_resizing_direction = "right"
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def _on_resize(
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self, window_sdl2: WindowSDL, width: int, height: int
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) -> None:
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self._set_window_width_resizing_direction(width)
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self.__width = width
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