David Gwilliam
b926b346ad
- Fix TerminalDisplay: add screen clear each frame (cursor home + erase down) - Fix CameraStage: use set_canvas_size instead of read-only viewport properties - Fix Glitch effect: preserve visible line lengths, remove cursor positioning - Fix Fade effect: return original line when fade=0 instead of empty string - Fix Noise effect: use input line length instead of terminal_width - Remove HUD effect from all presets (redundant with border FPS display) - Add regression tests for effect dimension stability - Add docs/ARCHITECTURE.md with Mermaid diagrams - Add mise tasks: diagram-ascii, diagram-validate, diagram-check - Move markdown docs to docs/ (ARCHITECTURE, Refactor, hardware specs) - Remove redundant requirements files (use pyproject.toml) - Add *.dot and *.png to .gitignore Closes #25
67 lines
1.8 KiB
Python
67 lines
1.8 KiB
Python
"""
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Null/headless display backend.
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"""
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import time
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class NullDisplay:
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"""Headless/null display - discards all output.
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This display does nothing - useful for headless benchmarking
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or when no display output is needed. Captures last buffer
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for testing purposes.
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"""
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width: int = 80
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height: int = 24
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_last_buffer: list[str] | None = None
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def __init__(self):
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self._last_buffer = None
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def init(self, width: int, height: int, reuse: bool = False) -> None:
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"""Initialize display with dimensions.
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Args:
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width: Terminal width in characters
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height: Terminal height in rows
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reuse: Ignored for NullDisplay (no resources to reuse)
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"""
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self.width = width
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self.height = height
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self._last_buffer = None
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def show(self, buffer: list[str], border: bool = False) -> None:
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from engine.display import get_monitor
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self._last_buffer = buffer
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monitor = get_monitor()
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if monitor:
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t0 = time.perf_counter()
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chars_in = sum(len(line) for line in buffer)
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elapsed_ms = (time.perf_counter() - t0) * 1000
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monitor.record_effect("null_display", elapsed_ms, chars_in, chars_in)
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def clear(self) -> None:
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pass
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def cleanup(self) -> None:
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pass
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def get_dimensions(self) -> tuple[int, int]:
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"""Get current dimensions.
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Returns:
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(width, height) in character cells
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"""
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return (self.width, self.height)
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def is_quit_requested(self) -> bool:
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"""Check if quit was requested (optional protocol method)."""
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return False
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def clear_quit_request(self) -> None:
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"""Clear quit request (optional protocol method)."""
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pass
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