| 1 | #!/usr/bin/env python3 |
| 2 | """ |
| 3 | PPT Master - Shape Boolean SVG Fragment Tool |
| 4 | |
| 5 | Combine closed SVG shapes or resolvable text outlines and print the resulting |
| 6 | canonical SVG path fragment to stdout. Result geometry is in SVG-root coordinate |
| 7 | space: replace the operands at their original z-order under the final semantic |
| 8 | or structured parent, never under the old transformed ancestor. The source SVG |
| 9 | is read-only; this tool never rewrites the page. |
| 10 | |
| 11 | Usage: |
| 12 | python3 scripts/shape_boolean_svg.py render SVG_FILE \ |
| 13 | --operation OPERATION --source ID --source ID --id OUTPUT_ID |
| 14 | |
| 15 | Examples: |
| 16 | python3 scripts/shape_boolean_svg.py render slide.svg \ |
| 17 | --operation intersect --source circle --source card --id overlap |
| 18 | python3 scripts/shape_boolean_svg.py render slide.svg \ |
| 19 | --operation subtract --source body --source cutout --id result \ |
| 20 | --fill "#2563EB" --stroke none |
| 21 | python3 scripts/shape_boolean_svg.py render cover.svg \ |
| 22 | --operation subtract --source scrim --source chapter-number --id reveal |
| 23 | |
| 24 | Dependencies: |
| 25 | skia-pathops, local PPT Master modules, and uharfbuzz for text operands |
| 26 | """ |
| 27 | |
| 28 | from __future__ import annotations |
| 29 | |
| 30 | import argparse |
| 31 | import math |
| 32 | import sys |
| 33 | from pathlib import Path |
| 34 | from typing import Sequence |
| 35 | |
| 36 | from console_encoding import configure_utf8_stdio |
| 37 | |
| 38 | |
| 39 | configure_utf8_stdio() |
| 40 | |
| 41 | |
| 42 | def build_parser() -> argparse.ArgumentParser: |
| 43 | parser = argparse.ArgumentParser( |
| 44 | description=( |
| 45 | "Print the Boolean result of closed SVG shapes or resolvable text " |
| 46 | "outlines as canonical SVG path fragments in SVG-root coordinate " |
| 47 | "space. Insert the result at the original z-order under the final " |
| 48 | "semantic or structured parent, never under the old transformed " |
| 49 | "ancestor. The source file is never modified." |
| 50 | ), |
| 51 | formatter_class=argparse.RawDescriptionHelpFormatter, |
| 52 | ) |
| 53 | subparsers = parser.add_subparsers(dest="command", required=True) |
| 54 | |
| 55 | render_parser = subparsers.add_parser( |
| 56 | "render", |
| 57 | help="Print SVG-root-coordinate Boolean-result paths to stdout.", |
| 58 | ) |
| 59 | render_parser.add_argument( |
| 60 | "svg_file", |
| 61 | type=Path, |
| 62 | help="Source SVG containing the operand elements.", |
| 63 | ) |
| 64 | render_parser.add_argument( |
| 65 | "--operation", |
| 66 | required=True, |
| 67 | choices=("union", "combine", "fragment", "intersect", "subtract"), |
| 68 | help="PowerPoint-compatible merge-shapes operation.", |
| 69 | ) |
| 70 | render_parser.add_argument( |
| 71 | "--source", |
| 72 | action="append", |
| 73 | required=True, |
| 74 | dest="source_ids", |
| 75 | metavar="ID", |
| 76 | help=( |
| 77 | "Operand element id in merge order; repeat at least twice. " |
| 78 | "The first operand is primary for subtract and style inheritance." |
| 79 | ), |
| 80 | ) |
| 81 | render_parser.add_argument( |
| 82 | "--id", |
| 83 | required=True, |
| 84 | dest="output_id", |
| 85 | help="Stable id for the result, or the base id for fragment results.", |
| 86 | ) |
| 87 | render_parser.add_argument( |
| 88 | "--font-dir", |
| 89 | action="append", |
| 90 | default=[], |
| 91 | dest="font_dirs", |
| 92 | type=Path, |
| 93 | metavar="PATH", |
| 94 | help=( |
| 95 | "Additional font directory for text operands; repeat as needed. " |
| 96 | "Explicit directories are searched before system font directories." |
| 97 | ), |
| 98 | ) |
| 99 | render_parser.add_argument( |
| 100 | "--fill", |
| 101 | help="Override the primary shape's solid SVG fill, or use none.", |
| 102 | ) |
| 103 | render_parser.add_argument( |
| 104 | "--fill-opacity", |
| 105 | type=float, |
| 106 | help="Override fill opacity from 0 to 1.", |
| 107 | ) |
| 108 | render_parser.add_argument( |
| 109 | "--stroke", |
| 110 | help="Override the primary shape's solid SVG stroke, or use none.", |
| 111 | ) |
| 112 | render_parser.add_argument( |
| 113 | "--stroke-width", |
| 114 | type=float, |
| 115 | help="Override stroke width in SVG page units.", |
| 116 | ) |
| 117 | render_parser.add_argument( |
| 118 | "--stroke-opacity", |
| 119 | type=float, |
| 120 | help="Override stroke opacity from 0 to 1.", |
| 121 | ) |
| 122 | return parser |
| 123 | |
| 124 | |
| 125 | def main(argv: Sequence[str] | None = None) -> int: |
| 126 | parser = build_parser() |
| 127 | args = parser.parse_args(argv) |
| 128 | |
| 129 | try: |
| 130 | style = _style_from_args(args) |
| 131 | _validate_render_args(args) |
| 132 | from svg_to_pptx.shape_boolean import ( |
| 133 | render_boolean_svg_fragments, |
| 134 | ) |
| 135 | |
| 136 | fragment = render_boolean_svg_fragments( |
| 137 | args.svg_file, |
| 138 | operation=args.operation, |
| 139 | source_ids=args.source_ids, |
| 140 | output_id=args.output_id, |
| 141 | style=style or None, |
| 142 | font_dirs=args.font_dirs, |
| 143 | ) |
| 144 | except (OSError, RuntimeError, ValueError) as exc: |
| 145 | print(f"Error: {exc}", file=sys.stderr) |
| 146 | return 1 |
| 147 | |
| 148 | print(fragment) |
| 149 | return 0 |
| 150 | |
| 151 | |
| 152 | def _validate_render_args(args: argparse.Namespace) -> None: |
| 153 | if len(args.source_ids) < 2: |
| 154 | raise ValueError("--source must be repeated at least twice") |
| 155 | if len(set(args.source_ids)) != len(args.source_ids): |
| 156 | raise ValueError("--source ids must be unique") |
| 157 | if not args.output_id.strip(): |
| 158 | raise ValueError("--id must not be empty") |
| 159 | for font_dir in args.font_dirs: |
| 160 | if not font_dir.is_dir(): |
| 161 | raise ValueError(f"--font-dir is not a directory: {font_dir}") |
| 162 | |
| 163 | |
| 164 | def _style_from_args(args: argparse.Namespace) -> dict[str, str]: |
| 165 | style: dict[str, str] = {} |
| 166 | if args.fill is not None: |
| 167 | style["fill"] = args.fill |
| 168 | if args.fill_opacity is not None: |
| 169 | _validate_opacity("--fill-opacity", args.fill_opacity) |
| 170 | style["fill-opacity"] = str(args.fill_opacity) |
| 171 | if args.stroke is not None: |
| 172 | style["stroke"] = args.stroke |
| 173 | if args.stroke_width is not None: |
| 174 | if not math.isfinite(args.stroke_width) or args.stroke_width < 0: |
| 175 | raise ValueError("--stroke-width must be greater than or equal to 0") |
| 176 | style["stroke-width"] = str(args.stroke_width) |
| 177 | if args.stroke_opacity is not None: |
| 178 | _validate_opacity("--stroke-opacity", args.stroke_opacity) |
| 179 | style["stroke-opacity"] = str(args.stroke_opacity) |
| 180 | return style |
| 181 | |
| 182 | |
| 183 | def _validate_opacity(option: str, value: float) -> None: |
| 184 | if not math.isfinite(value) or not 0 <= value <= 1: |
| 185 | raise ValueError(f"{option} must be between 0 and 1") |
| 186 | |
| 187 | |
| 188 | if __name__ == "__main__": |
| 189 | raise SystemExit(main()) |
| 190 |