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Thomas Farstrike
72 lines
1.9 KiB
Python
72 lines
1.9 KiB
Python
# lib/mpos/ui/display_metrics.py
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"""
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DisplayMetrics - Android-inspired display metrics singleton.
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Provides a clean, unified API for accessing display properties like width, height, and DPI.
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All methods are class methods, so no instance creation is needed.
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"""
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class DisplayMetrics:
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"""
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Display metrics singleton (Android-inspired).
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Provides static/class methods for accessing display properties.
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Initialized by display.init_rootscreen() which calls set_resolution() and set_dpi().
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"""
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_width = None
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_height = None
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_dpi = None
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@classmethod
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def set_resolution(cls, width, height):
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"""Set the display resolution (called by init_rootscreen)."""
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cls._width = width
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cls._height = height
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@classmethod
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def set_dpi(cls, dpi):
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"""Set the display DPI (called by init_rootscreen)."""
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cls._dpi = dpi
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@classmethod
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def width(cls):
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"""Get display width in pixels."""
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return cls._width
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@classmethod
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def height(cls):
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"""Get display height in pixels."""
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return cls._height
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@classmethod
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def dpi(cls):
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"""Get display DPI (dots per inch)."""
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return cls._dpi
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@classmethod
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def pct_of_width(cls, pct):
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"""Get percentage of display width."""
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if pct == 100:
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return cls._width
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return round(cls._width * pct / 100)
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@classmethod
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def pct_of_height(cls, pct):
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"""Get percentage of display height."""
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if pct == 100:
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return cls._height
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return round(cls._height * pct / 100)
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@classmethod
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def min_dimension(cls):
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"""Get minimum dimension (width or height)."""
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return min(cls._width, cls._height)
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@classmethod
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def max_dimension(cls):
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"""Get maximum dimension (width or height)."""
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return max(cls._width, cls._height)
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