feat(integration): Complete feature rewrite with pipeline architecture, effects system, and display improvements
Major changes: - Pipeline architecture with capability-based dependency resolution - Effects plugin system with performance monitoring - Display abstraction with multiple backends (terminal, null, websocket) - Camera system for viewport scrolling - Sensor framework for real-time input - Command-and-control system via ntfy - WebSocket display backend for browser clients - Comprehensive test suite and documentation Issue #48: ADR for preset scripting language included This commit consolidates 110 individual commits into a single feature integration that can be reviewed and tested before further refinement.
This commit is contained in:
50
engine/display/backends/multi.py
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50
engine/display/backends/multi.py
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@@ -0,0 +1,50 @@
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"""
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Multi display backend - forwards to multiple displays.
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"""
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class MultiDisplay:
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"""Display that forwards to multiple displays.
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Supports reuse - passes reuse flag to all child displays.
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"""
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width: int = 80
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height: int = 24
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def __init__(self, displays: list):
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self.displays = displays
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self.width = 80
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self.height = 24
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def init(self, width: int, height: int, reuse: bool = False) -> None:
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"""Initialize all child displays 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: If True, use reuse mode for child displays
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"""
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self.width = width
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self.height = height
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for d in self.displays:
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d.init(width, height, reuse=reuse)
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def show(self, buffer: list[str], border: bool = False) -> None:
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for d in self.displays:
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d.show(buffer, border=border)
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def clear(self) -> None:
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for d in self.displays:
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d.clear()
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def get_dimensions(self) -> tuple[int, int]:
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"""Get dimensions from the first child display that supports it."""
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for d in self.displays:
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if hasattr(d, "get_dimensions"):
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return d.get_dimensions()
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return (self.width, self.height)
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def cleanup(self) -> None:
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for d in self.displays:
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d.cleanup()
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183
engine/display/backends/null.py
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183
engine/display/backends/null.py
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@@ -0,0 +1,183 @@
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"""
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Null/headless display backend.
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"""
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import json
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import time
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from pathlib import Path
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from typing import Any
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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. Supports frame recording for replay
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and file export/import.
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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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self._is_recording = False
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self._recorded_frames: list[dict[str, Any]] = []
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self._frame_count = 0
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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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import sys
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from engine.display import get_monitor, render_border
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fps = 0.0
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frame_time = 0.0
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monitor = get_monitor()
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if monitor:
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stats = monitor.get_stats()
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avg_ms = stats.get("pipeline", {}).get("avg_ms", 0) if stats else 0
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frame_count = stats.get("frame_count", 0) if stats else 0
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if avg_ms and frame_count > 0:
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fps = 1000.0 / avg_ms
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frame_time = avg_ms
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if border:
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buffer = render_border(buffer, self.width, self.height, fps, frame_time)
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self._last_buffer = buffer
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if self._is_recording:
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self._recorded_frames.append(
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{
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"frame_number": self._frame_count,
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"buffer": buffer,
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"width": self.width,
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"height": self.height,
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}
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)
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if self._frame_count <= 5 or self._frame_count % 10 == 0:
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sys.stdout.write("\n" + "=" * 80 + "\n")
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sys.stdout.write(
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f"Frame {self._frame_count} (buffer height: {len(buffer)})\n"
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)
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sys.stdout.write("=" * 80 + "\n")
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for i, line in enumerate(buffer[:30]):
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sys.stdout.write(f"{i:2}: {line}\n")
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if len(buffer) > 30:
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sys.stdout.write(f"... ({len(buffer) - 30} more lines)\n")
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sys.stdout.flush()
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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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self._frame_count += 1
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def start_recording(self) -> None:
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"""Begin recording frames."""
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self._is_recording = True
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self._recorded_frames = []
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def stop_recording(self) -> None:
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"""Stop recording frames."""
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self._is_recording = False
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def get_frames(self) -> list[list[str]]:
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"""Get recorded frames as list of buffers.
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Returns:
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List of buffers, each buffer is a list of strings (lines)
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"""
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return [frame["buffer"] for frame in self._recorded_frames]
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def get_recorded_data(self) -> list[dict[str, Any]]:
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"""Get full recorded data including metadata.
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Returns:
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List of frame dicts with 'frame_number', 'buffer', 'width', 'height'
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"""
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return self._recorded_frames
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def clear_recording(self) -> None:
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"""Clear recorded frames."""
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self._recorded_frames = []
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def save_recording(self, filepath: str | Path) -> None:
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"""Save recorded frames to a JSON file.
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Args:
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filepath: Path to save the recording
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"""
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path = Path(filepath)
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data = {
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"version": 1,
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"display": "null",
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"width": self.width,
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"height": self.height,
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"frame_count": len(self._recorded_frames),
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"frames": self._recorded_frames,
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}
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path.write_text(json.dumps(data, indent=2))
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def load_recording(self, filepath: str | Path) -> list[dict[str, Any]]:
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"""Load recorded frames from a JSON file.
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Args:
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filepath: Path to load the recording from
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Returns:
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List of frame dicts
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"""
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path = Path(filepath)
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data = json.loads(path.read_text())
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self._recorded_frames = data.get("frames", [])
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self.width = data.get("width", 80)
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self.height = data.get("height", 24)
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return self._recorded_frames
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def replay_frames(self) -> list[list[str]]:
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"""Get frames for replay.
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Returns:
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List of buffers for replay
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"""
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return self.get_frames()
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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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369
engine/display/backends/pygame.py
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369
engine/display/backends/pygame.py
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@@ -0,0 +1,369 @@
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"""
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Pygame display backend - renders to a native application window.
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"""
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import time
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from engine.display.renderer import parse_ansi
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class PygameDisplay:
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"""Pygame display backend - renders to native window.
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Supports reuse mode - when reuse=True, skips SDL initialization
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and reuses the existing pygame window from a previous instance.
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"""
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width: int = 80
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window_width: int = 800
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window_height: int = 600
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def __init__(
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self,
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cell_width: int = 10,
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cell_height: int = 18,
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window_width: int = 800,
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window_height: int = 600,
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target_fps: float = 30.0,
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):
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self.width = 80
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self.height = 24
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self.cell_width = cell_width
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self.cell_height = cell_height
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self.window_width = window_width
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self.window_height = window_height
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self.target_fps = target_fps
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self._initialized = False
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self._pygame = None
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self._screen = None
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self._font = None
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self._resized = False
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self._quit_requested = False
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self._last_frame_time = 0.0
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self._frame_period = 1.0 / target_fps if target_fps > 0 else 0
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self._glyph_cache = {}
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def _get_font_path(self) -> str | None:
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"""Get font path for rendering."""
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import os
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import sys
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from pathlib import Path
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env_font = os.environ.get("MAINLINE_PYGAME_FONT")
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if env_font and os.path.exists(env_font):
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return env_font
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def search_dir(base_path: str) -> str | None:
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if not os.path.exists(base_path):
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return None
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if os.path.isfile(base_path):
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return base_path
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for font_file in Path(base_path).rglob("*"):
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if font_file.suffix.lower() in (".ttf", ".otf", ".ttc"):
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name = font_file.stem.lower()
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if "geist" in name and ("nerd" in name or "mono" in name):
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return str(font_file)
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return None
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search_dirs = []
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if sys.platform == "darwin":
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search_dirs.append(os.path.expanduser("~/Library/Fonts/"))
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elif sys.platform == "win32":
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search_dirs.append(
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os.path.expanduser("~\\AppData\\Local\\Microsoft\\Windows\\Fonts\\")
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)
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else:
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search_dirs.extend(
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[
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os.path.expanduser("~/.local/share/fonts/"),
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os.path.expanduser("~/.fonts/"),
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"/usr/share/fonts/",
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]
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)
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for search_dir_path in search_dirs:
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found = search_dir(search_dir_path)
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if found:
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return found
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return 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: If True, attach to existing pygame window instead of creating new
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"""
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self.width = width
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self.height = height
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try:
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import pygame
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except ImportError:
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return
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if reuse and PygameDisplay._pygame_initialized:
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self._pygame = pygame
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self._initialized = True
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return
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pygame.init()
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pygame.display.set_caption("Mainline")
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self._screen = pygame.display.set_mode(
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(self.window_width, self.window_height),
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pygame.RESIZABLE,
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)
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self._pygame = pygame
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PygameDisplay._pygame_initialized = True
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# Calculate character dimensions from actual window size
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self.width = max(1, self.window_width // self.cell_width)
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self.height = max(1, self.window_height // self.cell_height)
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font_path = self._get_font_path()
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if font_path:
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try:
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self._font = pygame.font.Font(font_path, self.cell_height - 2)
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except Exception:
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self._font = pygame.font.SysFont("monospace", self.cell_height - 2)
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else:
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self._font = pygame.font.SysFont("monospace", self.cell_height - 2)
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# Check if font supports box-drawing characters; if not, try to find one
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self._use_fallback_border = False
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if self._font:
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try:
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# Test rendering some key box-drawing characters
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test_chars = ["┌", "─", "┐", "│", "└", "┘"]
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for ch in test_chars:
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surf = self._font.render(ch, True, (255, 255, 255))
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# If surface is empty (width=0 or all black), font lacks glyph
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if surf.get_width() == 0:
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raise ValueError("Missing glyph")
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except Exception:
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# Font doesn't support box-drawing, will use line drawing fallback
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self._use_fallback_border = True
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self._initialized = True
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def show(self, buffer: list[str], border: bool = False) -> None:
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if not self._initialized or not self._pygame:
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return
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t0 = time.perf_counter()
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for event in self._pygame.event.get():
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if event.type == self._pygame.QUIT:
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self._quit_requested = True
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elif event.type == self._pygame.KEYDOWN:
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if event.key in (self._pygame.K_ESCAPE, self._pygame.K_c):
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if event.key == self._pygame.K_c and not (
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event.mod & self._pygame.KMOD_LCTRL
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or event.mod & self._pygame.KMOD_RCTRL
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):
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continue
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self._quit_requested = True
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elif event.type == self._pygame.VIDEORESIZE:
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self.window_width = event.w
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self.window_height = event.h
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self.width = max(1, self.window_width // self.cell_width)
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self.height = max(1, self.window_height // self.cell_height)
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self._resized = True
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# FPS limiting - skip frame if we're going too fast
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if self._frame_period > 0:
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now = time.perf_counter()
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elapsed = now - self._last_frame_time
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if elapsed < self._frame_period:
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return # Skip this frame
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self._last_frame_time = now
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# Get metrics for border display
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fps = 0.0
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frame_time = 0.0
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from engine.display import get_monitor
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monitor = get_monitor()
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if monitor:
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stats = monitor.get_stats()
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avg_ms = stats.get("pipeline", {}).get("avg_ms", 0) if stats else 0
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frame_count = stats.get("frame_count", 0) if stats else 0
|
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if avg_ms and frame_count > 0:
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fps = 1000.0 / avg_ms
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frame_time = avg_ms
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||||
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self._screen.fill((0, 0, 0))
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||||
|
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# If border requested but font lacks box-drawing glyphs, use graphical fallback
|
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if border and self._use_fallback_border:
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self._draw_fallback_border(fps, frame_time)
|
||||
# Adjust content area to fit inside border
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||||
content_offset_x = self.cell_width
|
||||
content_offset_y = self.cell_height
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self.window_width - 2 * self.cell_width
|
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self.window_height - 2 * self.cell_height
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||||
else:
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# Normal rendering (with or without text border)
|
||||
content_offset_x = 0
|
||||
content_offset_y = 0
|
||||
|
||||
if border:
|
||||
from engine.display import render_border
|
||||
|
||||
buffer = render_border(buffer, self.width, self.height, fps, frame_time)
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||||
|
||||
blit_list = []
|
||||
|
||||
for row_idx, line in enumerate(buffer[: self.height]):
|
||||
if row_idx >= self.height:
|
||||
break
|
||||
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||||
tokens = parse_ansi(line)
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||||
x_pos = content_offset_x
|
||||
|
||||
for text, fg, bg, _bold in tokens:
|
||||
if not text:
|
||||
continue
|
||||
|
||||
# Use None as key for no background
|
||||
bg_key = bg if bg != (0, 0, 0) else None
|
||||
cache_key = (text, fg, bg_key)
|
||||
|
||||
if cache_key not in self._glyph_cache:
|
||||
# Render and cache
|
||||
if bg_key is not None:
|
||||
self._glyph_cache[cache_key] = self._font.render(
|
||||
text, True, fg, bg_key
|
||||
)
|
||||
else:
|
||||
self._glyph_cache[cache_key] = self._font.render(text, True, fg)
|
||||
|
||||
surface = self._glyph_cache[cache_key]
|
||||
blit_list.append(
|
||||
(surface, (x_pos, content_offset_y + row_idx * self.cell_height))
|
||||
)
|
||||
x_pos += self._font.size(text)[0]
|
||||
|
||||
self._screen.blits(blit_list)
|
||||
|
||||
# Draw fallback border using graphics if needed
|
||||
if border and self._use_fallback_border:
|
||||
self._draw_fallback_border(fps, frame_time)
|
||||
|
||||
self._pygame.display.flip()
|
||||
|
||||
elapsed_ms = (time.perf_counter() - t0) * 1000
|
||||
|
||||
if monitor:
|
||||
chars_in = sum(len(line) for line in buffer)
|
||||
monitor.record_effect("pygame_display", elapsed_ms, chars_in, chars_in)
|
||||
|
||||
def _draw_fallback_border(self, fps: float, frame_time: float) -> None:
|
||||
"""Draw border using pygame graphics primitives instead of text."""
|
||||
if not self._screen or not self._pygame:
|
||||
return
|
||||
|
||||
# Colors
|
||||
border_color = (0, 255, 0) # Green (like terminal border)
|
||||
text_color = (255, 255, 255)
|
||||
|
||||
# Calculate dimensions
|
||||
x1 = 0
|
||||
y1 = 0
|
||||
x2 = self.window_width - 1
|
||||
y2 = self.window_height - 1
|
||||
|
||||
# Draw outer rectangle
|
||||
self._pygame.draw.rect(
|
||||
self._screen, border_color, (x1, y1, x2 - x1 + 1, y2 - y1 + 1), 1
|
||||
)
|
||||
|
||||
# Draw top border with FPS
|
||||
if fps > 0:
|
||||
fps_text = f" FPS:{fps:.0f}"
|
||||
else:
|
||||
fps_text = ""
|
||||
# We need to render this text with a fallback font that has basic ASCII
|
||||
# Use system font which should have these characters
|
||||
try:
|
||||
font = self._font # May not have box chars but should have alphanumeric
|
||||
text_surf = font.render(fps_text, True, text_color, (0, 0, 0))
|
||||
text_rect = text_surf.get_rect()
|
||||
# Position on top border, right-aligned
|
||||
text_x = x2 - text_rect.width - 5
|
||||
text_y = y1 + 2
|
||||
self._screen.blit(text_surf, (text_x, text_y))
|
||||
except Exception:
|
||||
pass
|
||||
|
||||
# Draw bottom border with frame time
|
||||
if frame_time > 0:
|
||||
ft_text = f" {frame_time:.1f}ms"
|
||||
try:
|
||||
ft_surf = self._font.render(ft_text, True, text_color, (0, 0, 0))
|
||||
ft_rect = ft_surf.get_rect()
|
||||
ft_x = x2 - ft_rect.width - 5
|
||||
ft_y = y2 - ft_rect.height - 2
|
||||
self._screen.blit(ft_surf, (ft_x, ft_y))
|
||||
except Exception:
|
||||
pass
|
||||
|
||||
def clear(self) -> None:
|
||||
if self._screen and self._pygame:
|
||||
self._screen.fill((0, 0, 0))
|
||||
self._pygame.display.flip()
|
||||
|
||||
def get_dimensions(self) -> tuple[int, int]:
|
||||
"""Get current terminal dimensions based on window size.
|
||||
|
||||
Returns:
|
||||
(width, height) in character cells
|
||||
"""
|
||||
# Query actual window size and recalculate character cells
|
||||
if self._screen and self._pygame:
|
||||
try:
|
||||
w, h = self._screen.get_size()
|
||||
if w != self.window_width or h != self.window_height:
|
||||
self.window_width = w
|
||||
self.window_height = h
|
||||
self.width = max(1, w // self.cell_width)
|
||||
self.height = max(1, h // self.cell_height)
|
||||
except Exception:
|
||||
pass
|
||||
return self.width, self.height
|
||||
|
||||
def cleanup(self, quit_pygame: bool = True) -> None:
|
||||
"""Cleanup display resources.
|
||||
|
||||
Args:
|
||||
quit_pygame: If True, quit pygame entirely. Set to False when
|
||||
reusing the display to avoid closing shared window.
|
||||
"""
|
||||
if quit_pygame and self._pygame:
|
||||
self._pygame.quit()
|
||||
PygameDisplay._pygame_initialized = False
|
||||
|
||||
@classmethod
|
||||
def reset_state(cls) -> None:
|
||||
"""Reset pygame state - useful for testing."""
|
||||
cls._pygame_initialized = False
|
||||
|
||||
def is_quit_requested(self) -> bool:
|
||||
"""Check if user requested quit (Ctrl+C, Ctrl+Q, or Escape).
|
||||
|
||||
Returns True if the user pressed Ctrl+C, Ctrl+Q, or Escape.
|
||||
The main loop should check this and raise KeyboardInterrupt.
|
||||
"""
|
||||
return self._quit_requested
|
||||
|
||||
def clear_quit_request(self) -> bool:
|
||||
"""Clear the quit request flag after handling.
|
||||
|
||||
Returns the previous quit request state.
|
||||
"""
|
||||
was_requested = self._quit_requested
|
||||
self._quit_requested = False
|
||||
return was_requested
|
||||
122
engine/display/backends/replay.py
Normal file
122
engine/display/backends/replay.py
Normal file
@@ -0,0 +1,122 @@
|
||||
"""
|
||||
Replay display backend - plays back recorded frames.
|
||||
"""
|
||||
|
||||
from typing import Any
|
||||
|
||||
|
||||
class ReplayDisplay:
|
||||
"""Replay display - plays back recorded frames.
|
||||
|
||||
This display reads frames from a recording (list of frame data)
|
||||
and yields them sequentially, useful for testing and demo purposes.
|
||||
"""
|
||||
|
||||
width: int = 80
|
||||
height: int = 24
|
||||
|
||||
def __init__(self):
|
||||
self._frames: list[dict[str, Any]] = []
|
||||
self._current_frame = 0
|
||||
self._playback_index = 0
|
||||
self._loop = False
|
||||
|
||||
def init(self, width: int, height: int, reuse: bool = False) -> None:
|
||||
"""Initialize display with dimensions.
|
||||
|
||||
Args:
|
||||
width: Terminal width in characters
|
||||
height: Terminal height in rows
|
||||
reuse: Ignored for ReplayDisplay
|
||||
"""
|
||||
self.width = width
|
||||
self.height = height
|
||||
|
||||
def set_frames(self, frames: list[dict[str, Any]]) -> None:
|
||||
"""Set frames to replay.
|
||||
|
||||
Args:
|
||||
frames: List of frame dicts with 'buffer', 'width', 'height'
|
||||
"""
|
||||
self._frames = frames
|
||||
self._current_frame = 0
|
||||
self._playback_index = 0
|
||||
|
||||
def set_loop(self, loop: bool) -> None:
|
||||
"""Set loop playback mode.
|
||||
|
||||
Args:
|
||||
loop: True to loop, False to stop at end
|
||||
"""
|
||||
self._loop = loop
|
||||
|
||||
def show(self, buffer: list[str], border: bool = False) -> None:
|
||||
"""Display a frame (ignored in replay mode).
|
||||
|
||||
Args:
|
||||
buffer: Buffer to display (ignored)
|
||||
border: Border flag (ignored)
|
||||
"""
|
||||
pass
|
||||
|
||||
def get_next_frame(self) -> list[str] | None:
|
||||
"""Get the next frame in the recording.
|
||||
|
||||
Returns:
|
||||
Buffer list of strings, or None if playback is done
|
||||
"""
|
||||
if not self._frames:
|
||||
return None
|
||||
|
||||
if self._playback_index >= len(self._frames):
|
||||
if self._loop:
|
||||
self._playback_index = 0
|
||||
else:
|
||||
return None
|
||||
|
||||
frame = self._frames[self._playback_index]
|
||||
self._playback_index += 1
|
||||
return frame.get("buffer")
|
||||
|
||||
def reset(self) -> None:
|
||||
"""Reset playback to the beginning."""
|
||||
self._playback_index = 0
|
||||
|
||||
def seek(self, index: int) -> None:
|
||||
"""Seek to a specific frame.
|
||||
|
||||
Args:
|
||||
index: Frame index to seek to
|
||||
"""
|
||||
if 0 <= index < len(self._frames):
|
||||
self._playback_index = index
|
||||
|
||||
def is_finished(self) -> bool:
|
||||
"""Check if playback is finished.
|
||||
|
||||
Returns:
|
||||
True if at end of frames and not looping
|
||||
"""
|
||||
return not self._loop and self._playback_index >= len(self._frames)
|
||||
|
||||
def clear(self) -> None:
|
||||
pass
|
||||
|
||||
def cleanup(self) -> None:
|
||||
pass
|
||||
|
||||
def get_dimensions(self) -> tuple[int, int]:
|
||||
"""Get current dimensions.
|
||||
|
||||
Returns:
|
||||
(width, height) in character cells
|
||||
"""
|
||||
return (self.width, self.height)
|
||||
|
||||
def is_quit_requested(self) -> bool:
|
||||
"""Check if quit was requested (optional protocol method)."""
|
||||
return False
|
||||
|
||||
def clear_quit_request(self) -> None:
|
||||
"""Clear quit request (optional protocol method)."""
|
||||
pass
|
||||
133
engine/display/backends/terminal.py
Normal file
133
engine/display/backends/terminal.py
Normal file
@@ -0,0 +1,133 @@
|
||||
"""
|
||||
ANSI terminal display backend.
|
||||
"""
|
||||
|
||||
import os
|
||||
|
||||
|
||||
class TerminalDisplay:
|
||||
"""ANSI terminal display backend.
|
||||
|
||||
Renders buffer to stdout using ANSI escape codes.
|
||||
Supports reuse - when reuse=True, skips re-initializing terminal state.
|
||||
Auto-detects terminal dimensions on init.
|
||||
"""
|
||||
|
||||
width: int = 80
|
||||
height: int = 24
|
||||
_initialized: bool = False
|
||||
|
||||
def __init__(self, target_fps: float = 30.0):
|
||||
self.target_fps = target_fps
|
||||
self._frame_period = 1.0 / target_fps if target_fps > 0 else 0
|
||||
self._last_frame_time = 0.0
|
||||
self._cached_dimensions: tuple[int, int] | None = None
|
||||
|
||||
def init(self, width: int, height: int, reuse: bool = False) -> None:
|
||||
"""Initialize display with dimensions.
|
||||
|
||||
If width/height are not provided (0/None), auto-detects terminal size.
|
||||
Otherwise uses provided dimensions or falls back to terminal size
|
||||
if the provided dimensions exceed terminal capacity.
|
||||
|
||||
Args:
|
||||
width: Desired terminal width (0 = auto-detect)
|
||||
height: Desired terminal height (0 = auto-detect)
|
||||
reuse: If True, skip terminal re-initialization
|
||||
"""
|
||||
from engine.terminal import CURSOR_OFF
|
||||
|
||||
# Auto-detect terminal size (handle case where no terminal)
|
||||
try:
|
||||
term_size = os.get_terminal_size()
|
||||
term_width = term_size.columns
|
||||
term_height = term_size.lines
|
||||
except OSError:
|
||||
# No terminal available (e.g., in tests)
|
||||
term_width = width if width > 0 else 80
|
||||
term_height = height if height > 0 else 24
|
||||
|
||||
# Use provided dimensions if valid, otherwise use terminal size
|
||||
if width > 0 and height > 0:
|
||||
self.width = min(width, term_width)
|
||||
self.height = min(height, term_height)
|
||||
else:
|
||||
self.width = term_width
|
||||
self.height = term_height
|
||||
|
||||
if not reuse or not self._initialized:
|
||||
print(CURSOR_OFF, end="", flush=True)
|
||||
self._initialized = True
|
||||
|
||||
def get_dimensions(self) -> tuple[int, int]:
|
||||
"""Get current terminal dimensions.
|
||||
|
||||
Returns cached dimensions to avoid querying terminal every frame,
|
||||
which can cause inconsistent results. Dimensions are only refreshed
|
||||
when they actually change.
|
||||
|
||||
Returns:
|
||||
(width, height) in character cells
|
||||
"""
|
||||
try:
|
||||
term_size = os.get_terminal_size()
|
||||
new_dims = (term_size.columns, term_size.lines)
|
||||
except OSError:
|
||||
new_dims = (self.width, self.height)
|
||||
|
||||
# Only update cached dimensions if they actually changed
|
||||
if self._cached_dimensions is None or self._cached_dimensions != new_dims:
|
||||
self._cached_dimensions = new_dims
|
||||
self.width = new_dims[0]
|
||||
self.height = new_dims[1]
|
||||
|
||||
return self._cached_dimensions
|
||||
|
||||
def show(self, buffer: list[str], border: bool = False) -> None:
|
||||
import sys
|
||||
|
||||
from engine.display import get_monitor, render_border
|
||||
|
||||
# Note: Frame rate limiting is handled by the caller (e.g., FrameTimer).
|
||||
# This display renders every frame it receives.
|
||||
|
||||
# Get metrics for border display
|
||||
fps = 0.0
|
||||
frame_time = 0.0
|
||||
monitor = get_monitor()
|
||||
if monitor:
|
||||
stats = monitor.get_stats()
|
||||
avg_ms = stats.get("pipeline", {}).get("avg_ms", 0) if stats else 0
|
||||
frame_count = stats.get("frame_count", 0) if stats else 0
|
||||
if avg_ms and frame_count > 0:
|
||||
fps = 1000.0 / avg_ms
|
||||
frame_time = avg_ms
|
||||
|
||||
# Apply border if requested
|
||||
from engine.display import BorderMode
|
||||
|
||||
if border and border != BorderMode.OFF:
|
||||
buffer = render_border(buffer, self.width, self.height, fps, frame_time)
|
||||
|
||||
# Write buffer with cursor home + erase down to avoid flicker
|
||||
output = "\033[H\033[J" + "".join(buffer)
|
||||
sys.stdout.buffer.write(output.encode())
|
||||
sys.stdout.flush()
|
||||
|
||||
def clear(self) -> None:
|
||||
from engine.terminal import CLR
|
||||
|
||||
print(CLR, end="", flush=True)
|
||||
|
||||
def cleanup(self) -> None:
|
||||
from engine.terminal import CURSOR_ON
|
||||
|
||||
print(CURSOR_ON, end="", flush=True)
|
||||
|
||||
def is_quit_requested(self) -> bool:
|
||||
"""Check if quit was requested (optional protocol method)."""
|
||||
return False
|
||||
|
||||
def clear_quit_request(self) -> None:
|
||||
"""Clear quit request (optional protocol method)."""
|
||||
pass
|
||||
464
engine/display/backends/websocket.py
Normal file
464
engine/display/backends/websocket.py
Normal file
@@ -0,0 +1,464 @@
|
||||
"""
|
||||
WebSocket display backend - broadcasts frame buffer to connected web clients.
|
||||
|
||||
Supports streaming protocols:
|
||||
- Full frame (JSON) - default for compatibility
|
||||
- Binary streaming - efficient binary protocol
|
||||
- Diff streaming - only sends changed lines
|
||||
|
||||
TODO: Transform to a true streaming backend with:
|
||||
- Proper WebSocket message streaming (currently sends full buffer each frame)
|
||||
- Connection pooling and backpressure handling
|
||||
- Binary protocol for efficiency (instead of JSON)
|
||||
- Client management with proper async handling
|
||||
- Mark for deprecation if replaced by a new streaming implementation
|
||||
|
||||
Current implementation: Simple broadcast of text frames to all connected clients.
|
||||
"""
|
||||
|
||||
import asyncio
|
||||
import base64
|
||||
import json
|
||||
import threading
|
||||
import time
|
||||
from enum import IntFlag
|
||||
|
||||
from engine.display.streaming import (
|
||||
MessageType,
|
||||
compress_frame,
|
||||
compute_diff,
|
||||
encode_binary_message,
|
||||
encode_diff_message,
|
||||
)
|
||||
|
||||
|
||||
class StreamingMode(IntFlag):
|
||||
"""Streaming modes for WebSocket display."""
|
||||
|
||||
JSON = 0x01 # Full JSON frames (default, compatible)
|
||||
BINARY = 0x02 # Binary compression
|
||||
DIFF = 0x04 # Differential updates
|
||||
|
||||
|
||||
try:
|
||||
import websockets
|
||||
except ImportError:
|
||||
websockets = None
|
||||
|
||||
|
||||
def get_monitor():
|
||||
"""Get the performance monitor."""
|
||||
try:
|
||||
from engine.effects.performance import get_monitor as _get_monitor
|
||||
|
||||
return _get_monitor()
|
||||
except Exception:
|
||||
return None
|
||||
|
||||
|
||||
class WebSocketDisplay:
|
||||
"""WebSocket display backend - broadcasts to HTML Canvas clients."""
|
||||
|
||||
width: int = 80
|
||||
height: int = 24
|
||||
|
||||
def __init__(
|
||||
self,
|
||||
host: str = "0.0.0.0",
|
||||
port: int = 8765,
|
||||
http_port: int = 8766,
|
||||
streaming_mode: StreamingMode = StreamingMode.JSON,
|
||||
):
|
||||
self.host = host
|
||||
self.port = port
|
||||
self.http_port = http_port
|
||||
self.width = 80
|
||||
self.height = 24
|
||||
self._clients: set = set()
|
||||
self._server_running = False
|
||||
self._http_running = False
|
||||
self._server_thread: threading.Thread | None = None
|
||||
self._http_thread: threading.Thread | None = None
|
||||
self._available = True
|
||||
self._max_clients = 10
|
||||
self._client_connected_callback = None
|
||||
self._client_disconnected_callback = None
|
||||
self._command_callback = None
|
||||
self._controller = None # Reference to UI panel or pipeline controller
|
||||
self._frame_delay = 0.0
|
||||
self._httpd = None # HTTP server instance
|
||||
|
||||
# Streaming configuration
|
||||
self._streaming_mode = streaming_mode
|
||||
self._last_buffer: list[str] = []
|
||||
self._client_capabilities: dict = {} # Track client capabilities
|
||||
|
||||
try:
|
||||
import websockets as _ws
|
||||
|
||||
self._available = _ws is not None
|
||||
except ImportError:
|
||||
self._available = False
|
||||
|
||||
def is_available(self) -> bool:
|
||||
"""Check if WebSocket support is available."""
|
||||
return self._available
|
||||
|
||||
def init(self, width: int, height: int, reuse: bool = False) -> None:
|
||||
"""Initialize display with dimensions and start server.
|
||||
|
||||
Args:
|
||||
width: Terminal width in characters
|
||||
height: Terminal height in rows
|
||||
reuse: If True, skip starting servers (assume already running)
|
||||
"""
|
||||
self.width = width
|
||||
self.height = height
|
||||
|
||||
if not reuse or not self._server_running:
|
||||
self.start_server()
|
||||
self.start_http_server()
|
||||
|
||||
def show(self, buffer: list[str], border: bool = False) -> None:
|
||||
"""Broadcast buffer to all connected clients using streaming protocol."""
|
||||
t0 = time.perf_counter()
|
||||
|
||||
# Get metrics for border display
|
||||
fps = 0.0
|
||||
frame_time = 0.0
|
||||
monitor = get_monitor()
|
||||
if monitor:
|
||||
stats = monitor.get_stats()
|
||||
avg_ms = stats.get("pipeline", {}).get("avg_ms", 0) if stats else 0
|
||||
frame_count = stats.get("frame_count", 0) if stats else 0
|
||||
if avg_ms and frame_count > 0:
|
||||
fps = 1000.0 / avg_ms
|
||||
frame_time = avg_ms
|
||||
|
||||
# Apply border if requested
|
||||
if border:
|
||||
from engine.display import render_border
|
||||
|
||||
buffer = render_border(buffer, self.width, self.height, fps, frame_time)
|
||||
|
||||
if not self._clients:
|
||||
self._last_buffer = buffer
|
||||
return
|
||||
|
||||
# Send to each client based on their capabilities
|
||||
disconnected = set()
|
||||
for client in list(self._clients):
|
||||
try:
|
||||
client_id = id(client)
|
||||
client_mode = self._client_capabilities.get(
|
||||
client_id, StreamingMode.JSON
|
||||
)
|
||||
|
||||
if client_mode & StreamingMode.DIFF:
|
||||
self._send_diff_frame(client, buffer)
|
||||
elif client_mode & StreamingMode.BINARY:
|
||||
self._send_binary_frame(client, buffer)
|
||||
else:
|
||||
self._send_json_frame(client, buffer)
|
||||
except Exception:
|
||||
disconnected.add(client)
|
||||
|
||||
for client in disconnected:
|
||||
self._clients.discard(client)
|
||||
if self._client_disconnected_callback:
|
||||
self._client_disconnected_callback(client)
|
||||
|
||||
self._last_buffer = buffer
|
||||
|
||||
elapsed_ms = (time.perf_counter() - t0) * 1000
|
||||
if monitor:
|
||||
chars_in = sum(len(line) for line in buffer)
|
||||
monitor.record_effect("websocket_display", elapsed_ms, chars_in, chars_in)
|
||||
|
||||
def _send_json_frame(self, client, buffer: list[str]) -> None:
|
||||
"""Send frame as JSON."""
|
||||
frame_data = {
|
||||
"type": "frame",
|
||||
"width": self.width,
|
||||
"height": self.height,
|
||||
"lines": buffer,
|
||||
}
|
||||
message = json.dumps(frame_data)
|
||||
asyncio.run(client.send(message))
|
||||
|
||||
def _send_binary_frame(self, client, buffer: list[str]) -> None:
|
||||
"""Send frame as compressed binary."""
|
||||
compressed = compress_frame(buffer)
|
||||
message = encode_binary_message(
|
||||
MessageType.FULL_FRAME, self.width, self.height, compressed
|
||||
)
|
||||
encoded = base64.b64encode(message).decode("utf-8")
|
||||
asyncio.run(client.send(encoded))
|
||||
|
||||
def _send_diff_frame(self, client, buffer: list[str]) -> None:
|
||||
"""Send frame as diff."""
|
||||
diff = compute_diff(self._last_buffer, buffer)
|
||||
|
||||
if not diff.changed_lines:
|
||||
return
|
||||
|
||||
diff_payload = encode_diff_message(diff)
|
||||
message = encode_binary_message(
|
||||
MessageType.DIFF_FRAME, self.width, self.height, diff_payload
|
||||
)
|
||||
encoded = base64.b64encode(message).decode("utf-8")
|
||||
asyncio.run(client.send(encoded))
|
||||
|
||||
def set_streaming_mode(self, mode: StreamingMode) -> None:
|
||||
"""Set the default streaming mode for new clients."""
|
||||
self._streaming_mode = mode
|
||||
|
||||
def get_streaming_mode(self) -> StreamingMode:
|
||||
"""Get the current streaming mode."""
|
||||
return self._streaming_mode
|
||||
|
||||
def clear(self) -> None:
|
||||
"""Broadcast clear command to all clients."""
|
||||
if self._clients:
|
||||
clear_data = {"type": "clear"}
|
||||
message = json.dumps(clear_data)
|
||||
for client in list(self._clients):
|
||||
try:
|
||||
asyncio.run(client.send(message))
|
||||
except Exception:
|
||||
pass
|
||||
|
||||
def cleanup(self) -> None:
|
||||
"""Stop the servers."""
|
||||
self.stop_server()
|
||||
self.stop_http_server()
|
||||
|
||||
async def _websocket_handler(self, websocket):
|
||||
"""Handle WebSocket connections."""
|
||||
if len(self._clients) >= self._max_clients:
|
||||
await websocket.close()
|
||||
return
|
||||
|
||||
self._clients.add(websocket)
|
||||
if self._client_connected_callback:
|
||||
self._client_connected_callback(websocket)
|
||||
|
||||
try:
|
||||
async for message in websocket:
|
||||
try:
|
||||
data = json.loads(message)
|
||||
msg_type = data.get("type")
|
||||
|
||||
if msg_type == "resize":
|
||||
self.width = data.get("width", 80)
|
||||
self.height = data.get("height", 24)
|
||||
elif msg_type == "command" and self._command_callback:
|
||||
# Forward commands to the pipeline controller
|
||||
command = data.get("command", {})
|
||||
self._command_callback(command)
|
||||
elif msg_type == "state_request":
|
||||
# Send current state snapshot
|
||||
state = self._get_state_snapshot()
|
||||
if state:
|
||||
response = {"type": "state", "state": state}
|
||||
await websocket.send(json.dumps(response))
|
||||
except json.JSONDecodeError:
|
||||
pass
|
||||
except Exception:
|
||||
pass
|
||||
finally:
|
||||
self._clients.discard(websocket)
|
||||
if self._client_disconnected_callback:
|
||||
self._client_disconnected_callback(websocket)
|
||||
|
||||
async def _run_websocket_server(self):
|
||||
"""Run the WebSocket server."""
|
||||
if not websockets:
|
||||
return
|
||||
async with websockets.serve(self._websocket_handler, self.host, self.port):
|
||||
while self._server_running:
|
||||
await asyncio.sleep(0.1)
|
||||
|
||||
async def _run_http_server(self):
|
||||
"""Run simple HTTP server for the client."""
|
||||
import os
|
||||
from http.server import HTTPServer, SimpleHTTPRequestHandler
|
||||
|
||||
# Find the project root by locating 'engine' directory in the path
|
||||
websocket_file = os.path.abspath(__file__)
|
||||
parts = websocket_file.split(os.sep)
|
||||
if "engine" in parts:
|
||||
engine_idx = parts.index("engine")
|
||||
project_root = os.sep.join(parts[:engine_idx])
|
||||
client_dir = os.path.join(project_root, "client")
|
||||
else:
|
||||
# Fallback: go up 4 levels from websocket.py
|
||||
# websocket.py: .../engine/display/backends/websocket.py
|
||||
# We need: .../client
|
||||
client_dir = os.path.join(
|
||||
os.path.dirname(
|
||||
os.path.dirname(os.path.dirname(os.path.dirname(__file__)))
|
||||
),
|
||||
"client",
|
||||
)
|
||||
|
||||
class Handler(SimpleHTTPRequestHandler):
|
||||
def __init__(self, *args, **kwargs):
|
||||
super().__init__(*args, directory=client_dir, **kwargs)
|
||||
|
||||
def log_message(self, format, *args):
|
||||
pass
|
||||
|
||||
httpd = HTTPServer((self.host, self.http_port), Handler)
|
||||
# Store reference for shutdown
|
||||
self._httpd = httpd
|
||||
# Serve requests continuously
|
||||
httpd.serve_forever()
|
||||
|
||||
def _run_async(self, coro):
|
||||
"""Run coroutine in background."""
|
||||
try:
|
||||
asyncio.run(coro)
|
||||
except Exception as e:
|
||||
print(f"WebSocket async error: {e}")
|
||||
|
||||
def start_server(self):
|
||||
"""Start the WebSocket server in a background thread."""
|
||||
if not self._available:
|
||||
return
|
||||
if self._server_thread is not None:
|
||||
return
|
||||
|
||||
self._server_running = True
|
||||
self._server_thread = threading.Thread(
|
||||
target=self._run_async, args=(self._run_websocket_server(),), daemon=True
|
||||
)
|
||||
self._server_thread.start()
|
||||
|
||||
def stop_server(self):
|
||||
"""Stop the WebSocket server."""
|
||||
self._server_running = False
|
||||
self._server_thread = None
|
||||
|
||||
def start_http_server(self):
|
||||
"""Start the HTTP server in a background thread."""
|
||||
if not self._available:
|
||||
return
|
||||
if self._http_thread is not None:
|
||||
return
|
||||
|
||||
self._http_running = True
|
||||
|
||||
self._http_running = True
|
||||
self._http_thread = threading.Thread(
|
||||
target=self._run_async, args=(self._run_http_server(),), daemon=True
|
||||
)
|
||||
self._http_thread.start()
|
||||
|
||||
def stop_http_server(self):
|
||||
"""Stop the HTTP server."""
|
||||
self._http_running = False
|
||||
if hasattr(self, "_httpd") and self._httpd:
|
||||
self._httpd.shutdown()
|
||||
self._http_thread = None
|
||||
|
||||
def client_count(self) -> int:
|
||||
"""Return number of connected clients."""
|
||||
return len(self._clients)
|
||||
|
||||
def get_ws_port(self) -> int:
|
||||
"""Return WebSocket port."""
|
||||
return self.port
|
||||
|
||||
def get_http_port(self) -> int:
|
||||
"""Return HTTP port."""
|
||||
return self.http_port
|
||||
|
||||
def set_frame_delay(self, delay: float) -> None:
|
||||
"""Set delay between frames in seconds."""
|
||||
self._frame_delay = delay
|
||||
|
||||
def get_frame_delay(self) -> float:
|
||||
"""Get delay between frames."""
|
||||
return self._frame_delay
|
||||
|
||||
def set_client_connected_callback(self, callback) -> None:
|
||||
"""Set callback for client connections."""
|
||||
self._client_connected_callback = callback
|
||||
|
||||
def set_client_disconnected_callback(self, callback) -> None:
|
||||
"""Set callback for client disconnections."""
|
||||
self._client_disconnected_callback = callback
|
||||
|
||||
def set_command_callback(self, callback) -> None:
|
||||
"""Set callback for incoming command messages from clients."""
|
||||
self._command_callback = callback
|
||||
|
||||
def set_controller(self, controller) -> None:
|
||||
"""Set controller (UI panel or pipeline) for state queries and command execution."""
|
||||
self._controller = controller
|
||||
|
||||
def broadcast_state(self, state: dict) -> None:
|
||||
"""Broadcast state update to all connected clients.
|
||||
|
||||
Args:
|
||||
state: Dictionary containing state data to send to clients
|
||||
"""
|
||||
if not self._clients:
|
||||
return
|
||||
|
||||
message = json.dumps({"type": "state", "state": state})
|
||||
|
||||
disconnected = set()
|
||||
for client in list(self._clients):
|
||||
try:
|
||||
asyncio.run(client.send(message))
|
||||
except Exception:
|
||||
disconnected.add(client)
|
||||
|
||||
for client in disconnected:
|
||||
self._clients.discard(client)
|
||||
if self._client_disconnected_callback:
|
||||
self._client_disconnected_callback(client)
|
||||
|
||||
def _get_state_snapshot(self) -> dict | None:
|
||||
"""Get current state snapshot from controller."""
|
||||
if not self._controller:
|
||||
return None
|
||||
|
||||
try:
|
||||
# Expect controller to have methods we need
|
||||
state = {}
|
||||
|
||||
# Get stages info if UIPanel
|
||||
if hasattr(self._controller, "stages"):
|
||||
state["stages"] = {
|
||||
name: {
|
||||
"enabled": ctrl.enabled,
|
||||
"params": ctrl.params,
|
||||
"selected": ctrl.selected,
|
||||
}
|
||||
for name, ctrl in self._controller.stages.items()
|
||||
}
|
||||
|
||||
# Get current preset
|
||||
if hasattr(self._controller, "_current_preset"):
|
||||
state["preset"] = self._controller._current_preset
|
||||
if hasattr(self._controller, "_presets"):
|
||||
state["presets"] = self._controller._presets
|
||||
|
||||
# Get selected stage
|
||||
if hasattr(self._controller, "selected_stage"):
|
||||
state["selected_stage"] = self._controller.selected_stage
|
||||
|
||||
return state
|
||||
except Exception:
|
||||
return None
|
||||
|
||||
def get_dimensions(self) -> tuple[int, int]:
|
||||
"""Get current dimensions.
|
||||
|
||||
Returns:
|
||||
(width, height) in character cells
|
||||
"""
|
||||
return (self.width, self.height)
|
||||
Reference in New Issue
Block a user