✨ Add SVG, HTML, and PPTX renderers#16
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Render canvases to vector and document formats alongside PNG/JPEG/WEBP: - canvas.render() detects .svg/.html/.pptx extensions; new to_svg(), to_html(), and to_pptx() methods - Backgrounds, gradients, outlines, shapes, and text (wrapping, rich parts, letter spacing, effects, rotation) export as native, editable primitives using the same layout math as the raster pipeline - Raster images, image glyph fills, blend modes, and custom layers are embedded as pixel-exact PNG fragments; layers below the last blend/custom layer are flattened so blending sees its backdrop - Optional embed_fonts inlines used fonts as @font-face data URLs - PPTX export maps text to editable text boxes and shapes to autoshapes via the new optional quickthumb[pptx] extra (python-pptx) https://claude.ai/code/session_01XRy5d1z14AgR3caayjjATH
Each snapshot stacks the PIL raster render (top) against the export rasterized back to pixels (bottom) with a magenta divider, so export fidelity can be judged visually like the existing rendering snapshots. - Five SVG comparison scenes: shapes/gradients/outline, text styles and effects, rich text and gradient fills, auto-layout groups, and blend-mode flattening with embedded images - PPTX comparisons rasterize through LibreOffice and skip when it is unavailable; regenerate with --inline-snapshot=create - conftest pins fontconfig to the repo fonts so cairosvg resolves the same font files as the PIL pipeline on any machine https://claude.ai/code/session_01XRy5d1z14AgR3caayjjATH
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Why
quickthumb only rendered raster output (PNG/JPEG/WEBP). The same layer spec is just as useful as a vector graphic, a shareable web page, or an editable slide — without rebuilding the design in another tool.
Changes
canvas.render()now detects.svg,.html, and.pptxextensions, with matching in-memory methods:Hybrid export strategy — layers the target format can express are emitted as native, editable primitives positioned with the same layout math as the raster renderer; everything else is embedded as pixel-exact PNG fragments rendered by the existing PIL pipeline:
<text>per line/runembed_fontsinlines used fonts as@font-facedata URLs; HTML defaults to embedded fonts so files are self-contained.quickthumb[pptx](python-pptx); SVG/HTML need no new dependencies. The CLI picks formats from-o card.svgetc. automatically.PowerPoint lays text out with its own font metrics, so PPTX text placement is a close approximation rather than pixel-identical (documented).
https://claude.ai/code/session_01XRy5d1z14AgR3caayjjATH
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